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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-06 03:07:32 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-06 03:07:32 +0200 |
| commit | 2e032852245b3dcfe5461d7353e34eb6da095ccf (patch) | |
| tree | 69f9fdf03b54d76bb539096e0ec96e91ea8216b1 /arch/arm | |
| parent | net: stmmac: fix bad merge conflict resolution (diff) | |
| parent | Merge branches 'debug-choice', 'devel-stable' and 'misc' into for-linus (diff) | |
| download | linux-2e032852245b3dcfe5461d7353e34eb6da095ccf.tar.xz linux-2e032852245b3dcfe5461d7353e34eb6da095ccf.zip | |
Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
"This set includes adding support for Neon acceleration of RAID6 XOR
code from Ard Biesheuvel, cache flushing and barrier updates from Will
Deacon, and a cleanup to the ARM debug code which reduces the amount
of code by about 500 lines.
A few other cleanups, such as constifying the machine descriptors
which already shouldn't be written to, cleaning up the printing of the
L2 cache size"
* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (55 commits)
ARM: 7826/1: debug: support debug ll on hisilicon soc
ARM: 7830/1: delay: don't bother reporting bogomips in /proc/cpuinfo
ARM: 7829/1: Add ".text.unlikely" and ".text.hot" to arm unwind tables
ARM: 7828/1: ARMv7-M: implement restart routine common to all v7-M machines
ARM: 7827/1: highbank: fix debug uart virtual address for LPAE
ARM: 7823/1: errata: workaround Cortex-A15 erratum 773022
ARM: 7806/1: allow DEBUG_UNCOMPRESS for Tegra
ARM: 7793/1: debug: use generic option for ep93xx PL10x debug port
ARM: debug: move SPEAr debug to generic PL01x code
ARM: debug: move davinci debug to generic 8250 code
ARM: debug: move keystone debug to generic 8250 code
ARM: debug: remove DEBUG_ROCKCHIP_UART
ARM: debug: provide generic option choices for 8250 and PL01x ports
ARM: debug: move PL01X debug include into arch/arm/include/debug/
ARM: debug: provide PL01x debug uart phys/virt address configuration options
ARM: debug: add support for word accesses to debug/8250.S
ARM: debug: move 8250 debug include into arch/arm/include/debug/
ARM: debug: provide 8250 debug uart phys/virt address configuration options
ARM: debug: provide 8250 debug uart register shift configuration option
ARM: debug: provide 8250 debug uart flow control configuration option
...
Diffstat (limited to 'arch/arm')
93 files changed, 1219 insertions, 1331 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index cd5c1c97b043..5d1f5704a284 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -52,6 +52,7 @@ config ARM select HAVE_REGS_AND_STACK_ACCESS_API select HAVE_SYSCALL_TRACEPOINTS select HAVE_UID16 + select IRQ_FORCED_THREADING select KTIME_SCALAR select PERF_USE_VMALLOC select RTC_LIB @@ -1372,6 +1373,15 @@ config ARM_ERRATA_798181 which sends an IPI to the CPUs that are running the same ASID as the one being invalidated. +config ARM_ERRATA_773022 + bool "ARM errata: incorrect instructions may be executed from loop buffer" + depends on CPU_V7 + help + This option enables the workaround for the 773022 Cortex-A15 + (up to r0p4) erratum. In certain rare sequences of code, the + loop buffer may deliver incorrect instructions. This + workaround disables the loop buffer to avoid the erratum. + endmenu source "arch/arm/common/Kconfig" @@ -1613,13 +1623,49 @@ config ARCH_NR_GPIO source kernel/Kconfig.preempt -config HZ +config HZ_FIXED int default 200 if ARCH_EBSA110 || ARCH_S3C24XX || ARCH_S5P64X0 || \ ARCH_S5PV210 || ARCH_EXYNOS4 default AT91_TIMER_HZ if ARCH_AT91 default SHMOBILE_TIMER_HZ if ARCH_SHMOBILE - default 100 + +choice + depends on !HZ_FIXED + prompt "Timer frequency" + +config HZ_100 + bool "100 Hz" + +config HZ_200 + bool "200 Hz" + +config HZ_250 + bool "250 Hz" + +config HZ_300 + bool "300 Hz" + +config HZ_500 + bool "500 Hz" + +config HZ_1000 + bool "1000 Hz" + +endchoice + +config HZ + int + default HZ_FIXED if HZ_FIXED + default 100 if HZ_100 + default 200 if HZ_200 + default 250 if HZ_250 + default 300 if HZ_300 + default 500 if HZ_500 + default 1000 + +config SCHED_HRTICK + def_bool HIGH_RES_TIMERS config SCHED_HRTICK def_bool HIGH_RES_TIMERS @@ -1756,6 +1802,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE def_bool y depends on ARM_LPAE +config ARCH_WANT_GENERAL_HUGETLB + def_bool y + source "mm/Kconfig" config FORCE_MAX_ZONEORDER @@ -2174,6 +2223,13 @@ config NEON Say Y to include support code for NEON, the ARMv7 Advanced SIMD Extension. +config KERNEL_MODE_NEON + bool "Support for NEON in kernel mode" + default n + depends on NEON + help + Say Y to include support for NEON in kernel mode. + endmenu menu "Userspace binary formats" @@ -2198,7 +2254,7 @@ source "kernel/power/Kconfig" config ARCH_SUSPEND_POSSIBLE depends on !ARCH_S5PC100 - depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \ + depends on CPU_ARM920T || CPU_ARM926T || CPU_FEROCEON || CPU_SA1100 || \ CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK def_bool y diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 583f4a00ec32..4137529850cb 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -92,6 +92,7 @@ choice config DEBUG_BCM2835 bool "Kernel low-level debugging on BCM2835 PL011 UART" depends on ARCH_BCM2835 + select DEBUG_UART_PL01X config DEBUG_CLPS711X_UART1 bool "Kernel low-level debugging messages via UART1" @@ -110,6 +111,7 @@ choice config DEBUG_CNS3XXX bool "Kernel Kernel low-level debugging on Cavium Networks CNS3xxx" depends on ARCH_CNS3XXX + select DEBUG_UART_PL01X help Say Y here if you want the debug print routines to direct their output to the CNS3xxx UART0. @@ -117,6 +119,7 @@ choice config DEBUG_DAVINCI_DA8XX_UART1 bool "Kernel low-level debugging on DaVinci DA8XX using UART1" depends on ARCH_DAVINCI_DA8XX + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART1 serial port on DaVinci DA8XX devices. @@ -124,6 +127,7 @@ choice config DEBUG_DAVINCI_DA8XX_UART2 bool "Kernel low-level debugging on DaVinci DA8XX using UART2" depends on ARCH_DAVINCI_DA8XX + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART2 serial port on DaVinci DA8XX devices. @@ -131,6 +135,7 @@ choice config DEBUG_DAVINCI_DMx_UART0 bool "Kernel low-level debugging on DaVinci DMx using UART0" depends on ARCH_DAVINCI_DMx + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART0 serial port on DaVinci DMx devices. @@ -138,6 +143,7 @@ choice config DEBUG_DAVINCI_TNETV107X_UART1 bool "Kernel low-level debugging on DaVinci TNETV107x using UART1" depends on ARCH_DAVINCI_TNETV107X + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART1 serial port on DaVinci TNETV107X @@ -174,9 +180,26 @@ choice Say Y here if you want the debug print routines to direct their output to the 8250 at PCI COM1. + config DEBUG_HI3620_UART + bool "Hisilicon HI3620 Debug UART" + depends on ARCH_HI3xxx + select DEBUG_UART_PL01X + help + Say Y here if you want kernel low-level debugging support + on HI3620 UART. + + config DEBUG_HI3716_UART + bool "Hisilicon Hi3716 Debug UART" + depends on ARCH_HI3xxx + select DEBUG_UART_PL01X + help + Say Y here if you want kernel low-level debugging support + on HI3716 UART. + config DEBUG_HIGHBANK_UART bool "Kernel low-level debugging messages via Highbank UART" depends on ARCH_HIGHBANK + select DEBUG_UART_PL01X help Say Y here if you want the debug print routines to direct their output to the UART on Highbank based devices. @@ -191,6 +214,7 @@ choice config DEBUG_IMX23_UART bool "i.MX23 Debug UART" depends on SOC_IMX23 + select DEBUG_UART_PL01X help Say Y here if you want kernel low-level debugging support on i.MX23. @@ -212,6 +236,7 @@ choice config DEBUG_IMX28_UART bool "i.MX28 Debug UART" depends on SOC_IMX28 + select DEBUG_UART_PL01X help Say Y here if you want kernel low-level debugging support on i.MX28. @@ -261,6 +286,7 @@ choice config DEBUG_KEYSTONE_UART0 bool "Kernel low-level debugging on KEYSTONE2 using UART0" depends on ARCH_KEYSTONE + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART0 serial port on KEYSTONE2 devices. @@ -268,6 +294,7 @@ choice config DEBUG_KEYSTONE_UART1 bool "Kernel low-level debugging on KEYSTONE2 using UART1" depends on ARCH_KEYSTONE + select DEBUG_UART_8250 help Say Y here if you want the debug print routines to direct their output to UART1 serial port on KEYSTONE2 devices. @@ -275,6 +302,7 @@ choice config DEBUG_MMP_UART2 bool "Kernel low-level debugging message via MMP UART2" depends on ARCH_MMP + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on MMP UART2. @@ -282,6 +310,7 @@ choice config DEBUG_MMP_UART3 bool "Kernel low-level debugging message via MMP UART3" depends on ARCH_MMP + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on MMP UART3. @@ -326,6 +355,7 @@ choice config DEBUG_MVEBU_UART bool "Kernel low-level debugging messages via MVEBU UART (old bootloaders)" depends on ARCH_MVEBU + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on MVEBU based platforms. @@ -344,6 +374,7 @@ choice config DEBUG_MVEBU_UART_ALTERNATE bool "Kernel low-level debugging messages via MVEBU UART (new bootloaders)" depends on ARCH_MVEBU + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on MVEBU based platforms. @@ -358,6 +389,7 @@ choice config DEBUG_NOMADIK_UART bool "Kernel low-level debugging messages via NOMADIK UART" depends on ARCH_NOMADIK + select DEBUG_UART_PL01X help Say Y here if you want kernel low-level debugging support on NOMADIK based platforms. @@ -365,6 +397,7 @@ choice config DEBUG_NSPIRE_CLASSIC_UART bool "Kernel low-level debugging via TI-NSPIRE 8250 UART" depends on ARCH_NSPIRE + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on TI-NSPIRE classic models. @@ -372,20 +405,82 @@ choice config DEBUG_NSPIRE_CX_UART bool "Kernel low-level debugging via TI-NSPIRE PL011 UART" depends on ARCH_NSPIRE + select DEBUG_UART_PL01X help Say Y here if you want kernel low-level debugging support on TI-NSPIRE CX models. - config DEBUG_OMAP2PLUS_UART - bool "Kernel low-level debugging messages via OMAP2PLUS UART" + config DEBUG_OMAP2UART1 + bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART help - Say Y here if you want kernel low-level debugging support - on OMAP2PLUS based platforms. + This covers at least h4, 2430sdp, 3430sdp, 3630sdp, + omap3 torpedo and 3530 lv som. + + config DEBUG_OMAP2UART2 + bool "Kernel low-level debugging messages via OMAP2/3/4 UART2" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_OMAP2UART3 + bool "Kernel low-level debugging messages via OMAP2 UART3 (n8x0)" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_OMAP3UART3 + bool "Kernel low-level debugging messages via OMAP3 UART3 (most omap3 boards)" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + help + This covers at least cm_t3x, beagle, crane, devkit8000, + igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, + and 3517evm. + + config DEBUG_OMAP4UART3 + bool "Kernel low-level debugging messages via OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_OMAP3UART4 + bool "Kernel low-level debugging messages via OMAP36XX UART4" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_OMAP4UART4 + bool "Kernel low-level debugging messages via OMAP4/5 UART4" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_TI81XXUART1 + bool "Kernel low-level debugging messages via TI81XX UART1 (ti8148evm)" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_TI81XXUART2 + bool "Kernel low-level debugging messages via TI81XX UART2" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_TI81XXUART3 + bool "Kernel low-level debugging messages via TI81XX UART3 (ti8168evm)" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_AM33XXUART1 + bool "Kernel low-level debugging messages via AM33XX UART1" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART + + config DEBUG_ZOOM_UART + bool "Kernel low-level debugging messages via Zoom2/3 UART" + depends on ARCH_OMAP2PLUS + select DEBUG_OMAP2PLUS_UART config DEBUG_PICOXCELL_UART depends on ARCH_PICOXCELL bool "Use PicoXcell UART for low-level debug" + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on PicoXcell based platforms. @@ -393,6 +488,7 @@ choice config DEBUG_PXA_UART1 depends on ARCH_PXA bool "Use PXA UART1 for low-level debug" + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on PXA UART1. @@ -400,6 +496,7 @@ choice config DEBUG_REALVIEW_STD_PORT bool "RealView Default UART" depends on ARCH_REALVIEW + select DEBUG_UART_PL01X help Say Y here if you want the debug print routines to direct their output to the serial port on RealView EB, PB11MP, PBA8 @@ -408,14 +505,64 @@ choice config DEBUG_REALVIEW_PB1176_PORT bool "RealView PB1176 UART" depends on MACH_REALVIEW_PB1176 + select DEBUG_UART_PL01X help Say Y here if you want the debug print routines to direct their output to the standard serial port on the RealView PB1176 platform. - config DEBUG_ROCKCHIP_UART - bool "Kernel low-level debugging messages via Rockchip UART" + config DEBUG_RK29_UART0 + bool "Kernel low-level debugging messages via Rockchip RK29 UART0" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK29_UART1 + bool "Kernel low-level debugging messages via Rockchip RK29 UART1" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK29_UART2 + bool "Kernel low-level debugging messages via Rockchip RK29 UART2" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK3X_UART0 + bool "Kernel low-level debugging messages via Rockchip RK3X UART0" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK3X_UART1 + bool "Kernel low-level debugging messages via Rockchip RK3X UART1" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK3X_UART2 + bool "Kernel low-level debugging messages via Rockchip RK3X UART2" + depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 + help + Say Y here if you want kernel low-level debugging support + on Rockchip based platforms. + + config DEBUG_RK3X_UART3 + bool "Kernel low-level debugging messages via Rockchip RK3X UART3" depends on ARCH_ROCKCHIP + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on Rockchip based platforms. @@ -471,6 +618,7 @@ choice config DEBUG_SOCFPGA_UART depends on ARCH_SOCFPGA bool "Use SOCFPGA UART for low-level debug" + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on SOCFPGA based platforms. @@ -478,6 +626,7 @@ choice config DEBUG_SUNXI_UART0 bool "Kernel low-level debugging messages via sunXi UART0" depends on ARCH_SUNXI + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on Allwinner A1X based platforms on the UART0. @@ -485,13 +634,59 @@ choice config DEBUG_SUNXI_UART1 bool "Kernel low-level debugging messages via sunXi UART1" depends on ARCH_SUNXI + select DEBUG_UART_8250 help Say Y here if you want kernel low-level debugging support on Allwinner A1X based platforms on the UART1. - config DEBUG_TEGRA_UART + config TEGRA_DEBUG_UART_AUTO_ODMDATA + bool "Kernel low-level debugging messages via Tegra UART via ODMDATA" + depends on ARCH_TEGRA + select DEBUG_TEGRA_UART + help + Automatically determines which UART to use for low-level + debug based on the ODMDATA value. This value is part of + the BCT, and is written to the boot memory device using + nvflash, or other flashing tool. When bits 19:18 are 3, + then bits 17:15 indicate which UART to use; 0/1/2/3/4 + are UART A/B/C/D/E. + + config TEGRA_DEBUG_UARTA + bool "Kernel low-level debugging messages via Tegra UART A" + depends on ARCH_TEGRA + select DEBUG_TEGRA_UART + help + Say Y here if you want kernel low-level debugging support + on Tegra based platforms. + + config TEGRA_DEBUG_UARTB + bool "Kernel low-level debugging messages via Tegra UART B" + depends on ARCH_TEGRA + select DEBUG_TEGRA_UART + help + Say Y here if you want kernel low-level debugging support + on Tegra based platforms. + + config TEGRA_DEBUG_UARTC + bool "Kernel low-level debugging messages via Tegra UART C" + depends on ARCH_TEGRA + select DEBUG_TEGRA_UART + help + Say Y here if you want kernel low-level debugging support + on Tegra based platforms. + + config TEGRA_DEBUG_UARTD + bool "Kernel low-level debugging messages via Tegra UART D" + depends on ARCH_TEGRA + select DEBUG_TEGRA_UART + help + Say Y here if you want kernel low-level debugging support + on Tegra based platforms. + + config TEGRA_DEBUG_UARTE + bool "Kernel low-level debugging messages via Tegra UART E" depends on ARCH_TEGRA - bool "Use Tegra UART for low-level debug" + select DEBUG_TEGRA_UART help Say Y here if you want kernel low-level debugging support on Tegra based platforms. @@ -510,19 +705,32 @@ choice Say Y here if you want the debug print routines to direct their output to the uart1 port on SiRFmarco devices. - config DEBUG_STI_UART + config STIH41X_DEBUG_ASC2 + bool "Use StiH415/416 ASC2 UART for low-level debug" + depends on ARCH_STI + select DEBUG_STI_UART + help + Say Y here if you want kernel low-level debugging support + on STiH415/416 based platforms like b2000, which has + default UART wired up to ASC2. + + If unsure, say N. + + config STIH41X_DEBUG_SBC_ASC1 + bool "Use StiH415/416 SBC ASC1 UART for low-level debug" depends on ARCH_STI - bool "Use StiH415/416 ASC for low-level debug" + select DEBUG_STI_UART help Say Y here if you want kernel low-level debugging support - on StiH415/416 based platforms like B2000, B2020. - It support UART2 and SBC_UART1. + on STiH415/416 based platforms like b2020. which has + default UART wired up to SBC ASC1. If unsure, say N. config DEBUG_U300_UART bool "Kernel low-level debugging messages via U300 UART0" depends on ARCH_U300 + select DEBUG_UART_PL01X help Say Y here if you want the debug print routines to direct their output to the uart port on U300 devices. @@ -548,6 +756,7 @@ choice config DEBUG_VEXPRESS_UART0_CA9 bool "Use PL011 UART0 at 0x10009000 (V2P-CA9 core tile)" depends on ARCH_VEXPRESS + select DEBUG_UART_PL01X help This option selects UART0 at 0x10009000. Except for custom models, this applies only to the V2P-CA9 tile. @@ -555,6 +764,7 @@ choice config DEBUG_VEXPRESS_UART0_RS1 bool "Use PL011 UART0 at 0x1c090000 (RS1 complaint tiles)" depends on ARCH_VEXPRESS + select DEBUG_UART_PL01X help This option selects UART0 at 0x1c090000. This applies to most of the tiles using the RS1 memory map, including all new A-class @@ -563,6 +773,7 @@ choice config DEBUG_VEXPRESS_UART0_CRX bool "Use PL011 UART0 at 0xb0090000 (Cortex-R compliant tiles)" depends on ARCH_VEXPRESS && !MMU + select DEBUG_UART_PL01X help This option selects UART0 at 0xb0090000. This is appropriate for Cortex-R series tiles and SMMs, such as Cortex-R5 and Cortex-R7 @@ -579,7 +790,7 @@ choice depends on !ARCH_MULTIPLATFORM help Say Y here if your platform doesn't provide a UART option - below. This relies on your platform choosing the right UART + above. This relies on your platform choosing the right UART definition internally in order for low-level debugging to work. @@ -610,11 +821,41 @@ choice For more details about semihosting, please see chapter 8 of DUI0203I_rvct_developer_guide.pdf from ARM Ltd. + config DEBUG_LL_UART_8250 + bool "Kernel low-level debugging via 8250 UART" + help + Say Y here if you wish the debug print routes to direct + their output to an 8250 UART. You can use this option + to provide the parameters for the 8250 UART rather than + selecting one of the platform specific options above if + you know the parameters for the port. + + This option is preferred over the platform specific + options; the platform specific options are deprecated + and will be soon removed. + + config DEBUG_LL_UART_PL01X + bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART" + help + Say Y here if you wish the debug print routes to direct + their output to a PL01x Primecell UART. You can use + this option to provide the parameters for the UART + rather than selecting one of the platform specific + options above if you know the parameters for the port. + + This option is preferred over the platform specific + options; the platform specific options are deprecated + and will be soon removed. + endchoice config DEBUG_EXYNOS_UART bool +config DEBUG_OMAP2PLUS_UART + bool + depends on ARCH_OMAP2PLUS + config DEBUG_IMX_UART_PORT int "i.MX Debug UART Port Selection" if DEBUG_IMX1_UART || \ DEBUG_IMX25_UART || \ @@ -631,140 +872,19 @@ config DEBUG_IMX_UART_PORT Choose UART port on which kernel low-level debug messages should be output. -choice - prompt "Low-level debug console UART" - depends on DEBUG_OMAP2PLUS_UART - - config DEBUG_OMAP2UART1 - bool "OMAP2/3/4 UART1 (omap2/3 sdp boards and some omap3 boards)" - help - This covers at least h4, 2430sdp, 3430sdp, 3630sdp, - omap3 torpedo and 3530 lv som. - - config DEBUG_OMAP2UART2 - bool "OMAP2/3/4 UART2" - - config DEBUG_OMAP2UART3 - bool "OMAP2 UART3 (n8x0)" - - config DEBUG_OMAP3UART3 - bool "OMAP3 UART3 (most omap3 boards)" - help - This covers at least cm_t3x, beagle, crane, devkit8000, - igep00x0, ldp, n900, n9(50), pandora, overo, touchbook, - and 3517evm. - - config DEBUG_OMAP4UART3 - bool "OMAP4/5 UART3 (omap4 blaze, panda, omap5 sevm)" - - config DEBUG_OMAP3UART4 - bool "OMAP36XX UART4" - - config DEBUG_OMAP4UART4 - bool "OMAP4/5 UART4" - - config DEBUG_TI81XXUART1 - bool "TI81XX UART1 (ti8148evm)" - - config DEBUG_TI81XXUART2 - bool "TI81XX UART2" - - config DEBUG_TI81XXUART3 - bool "TI81XX UART3 (ti8168evm)" - - config DEBUG_AM33XXUART1 - bool "AM33XX UART1" - - config DEBUG_ZOOM_UART - bool "Zoom2/3 UART" -endchoice - -choice - prompt "Low-level debug console UART" - depends on DEBUG_ROCKCHIP_UART - - config DEBUG_RK29_UART0 - bool "RK29 UART0" - - config DEBUG_RK29_UART1 - bool "RK29 UART1" - - config DEBUG_RK29_UART2 - bool "RK29 UART2" - - config DEBUG_RK3X_UART0 - bool "RK3X UART0" - - config DEBUG_RK3X_UART1 - bool "RK3X UART1" - - config DEBUG_RK3X_UART2 - bool "RK3X UART2" - - config DEBUG_RK3X_UART3 - bool "RK3X UART3" -endchoice - -choice - prompt "Low-level debug console UART" - depends on DEBUG_LL && DEBUG_TEGRA_UART - - config TEGRA_DEBUG_UART_AUTO_ODMDATA - bool "Via ODMDATA" - help - Automatically determines which UART to use for low-level debug based - on the ODMDATA value. This value is part of the BCT, and is written - to the boot memory device using nvflash, or other flashing tool. - When bits 19:18 are 3, then bits 17:15 indicate which UART to use; - 0/1/2/3/4 are UART A/B/C/D/E. - - config TEGRA_DEBUG_UARTA - bool "UART A" - - config TEGRA_DEBUG_UARTB - bool "UART B" - - config TEGRA_DEBUG_UARTC - bool "UART C" - - config TEGRA_DEBUG_UARTD - bool "UART D" - - config TEGRA_DEBUG_UARTE - bool "UART E" - -endchoice - -choice - prompt "Low-level debug console UART" - depends on DEBUG_LL && DEBUG_STI_UART - - config STIH41X_DEBUG_ASC2 - bool "ASC2 UART" - help - Say Y here if you want kernel low-level debugging support - on STiH415/416 based platforms like b2000, which has - default UART wired up to ASC2. - - If unsure, say N. - - config STIH41X_DEBUG_SBC_ASC1 - bool "SBC ASC1 UART" - help - Say Y here if you want kernel low-level debugging support - on STiH415/416 based platforms like b2020. which has - default UART wired up to SBC ASC1. - - If unsure, say N. +config DEBUG_TEGRA_UART + bool + depends on ARCH_TEGRA -endchoice +config DEBUG_STI_UART + bool + depends on ARCH_STI config DEBUG_LL_INCLUDE string - default "debug/bcm2835.S" if DEBUG_BCM2835 - default "debug/cns3xxx.S" if DEBUG_CNS3XXX + default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250 + default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X default "debug/exynos.S" if DEBUG_EXYNOS_UART - default "debug/highbank.S" if DEBUG_HIGHBANK_UART default "debug/icedcc.S" if DEBUG_ICEDCC default "debug/imx.S" if DEBUG_IMX1_UART || \ DEBUG_IMX25_UART || \ @@ -775,38 +895,170 @@ config DEBUG_LL_INCLUDE DEBUG_IMX53_UART ||\ DEBUG_IMX6Q_UART || \ DEBUG_IMX6SL_UART - default "debug/keystone.S" if DEBUG_KEYSTONE_UART0 || \ - DEBUG_KEYSTONE_UART1 - default "debug/mvebu.S" if DEBUG_MVEBU_UART || \ - DEBUG_MVEBU_UART_ALTERNATE - default "debug/mxs.S" if DEBUG_IMX23_UART || DEBUG_IMX28_UART - default "debug/nomadik.S" if DEBUG_NOMADIK_UART - default "debug/nspire.S" if DEBUG_NSPIRE_CX_UART || \ - DEBUG_NSPIRE_CLASSIC_UART default "debug/omap2plus.S" if DEBUG_OMAP2PLUS_UART - default "debug/picoxcell.S" if DEBUG_PICOXCELL_UART - default "debug/pxa.S" if DEBUG_PXA_UART1 || DEBUG_MMP_UART2 || \ - DEBUG_MMP_UART3 - default "debug/rockchip.S" if DEBUG_ROCKCHIP_UART default "debug/sirf.S" if DEBUG_SIRFPRIMA2_UART1 || DEBUG_SIRFMARCO_UART1 - default "debug/socfpga.S" if DEBUG_SOCFPGA_UART default "debug/sti.S" if DEBUG_STI_UART - default "debug/sunxi.S" if DEBUG_SUNXI_UART0 || DEBUG_SUNXI_UART1 default "debug/tegra.S" if DEBUG_TEGRA_UART - default "debug/u300.S" if DEBUG_U300_UART default "debug/ux500.S" if DEBUG_UX500_UART - default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT || \ - DEBUG_VEXPRESS_UART0_CA9 || DEBUG_VEXPRESS_UART0_RS1 || \ - DEBUG_VEXPRESS_UART0_CRX + default "debug/vexpress.S" if DEBUG_VEXPRESS_UART0_DETECT default "debug/vt8500.S" if DEBUG_VT8500_UART0 default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1 default "mach/debug-macro.S" +# Compatibility options for PL01x +config DEBUG_UART_PL01X + def_bool ARCH_EP93XX || \ + ARCH_INTEGRATOR || \ + ARCH_SPEAR3XX || \ + ARCH_SPEAR6XX || \ + ARCH_SPEAR13XX || \ + ARCH_VERSATILE + +# Compatibility options for 8250 +config DEBUG_UART_8250 + def_bool ARCH_DOVE || ARCH_EBSA110 || \ + (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \ + ARCH_GEMINI || ARCH_IOP13XX || ARCH_IOP32X || \ + ARCH_IOP33X || ARCH_IXP4XX || ARCH_KIRKWOOD || \ + ARCH_LPC32XX || ARCH_MV78XX0 || ARCH_ORION5X || ARCH_RPC + +config DEBUG_UART_PHYS + hex "Physical base address of debug UART" + default 0x01c20000 if DEBUG_DAVINCI_DMx_UART0 + default 0x01c28000 if DEBUG_SUNXI_UART0 + default 0x01c28400 if DEBUG_SUNXI_UART1 + default 0x01d0c000 if DEBUG_DAVINCI_DA8XX_UART1 + default 0x01d0d000 if DEBUG_DAVINCI_DA8XX_UART2 + default 0x02530c00 if DEBUG_KEYSTONE_UART0 + default 0x02531000 if DEBUG_KEYSTONE_UART1 + default 0x03010fe0 if ARCH_RPC + default 0x08108300 if DEBUG_DAVINCI_TNETV107X_UART1 + default 0x10009000 if DEBUG_REALVIEW_STD_PORT || DEBUG_CNS3XXX || \ + DEBUG_VEXPRESS_UART0_CA9 + default 0x1010c000 if DEBUG_REALVIEW_PB1176_PORT + default 0x10124000 if DEBUG_RK3X_UART0 + default 0x10126000 if DEBUG_RK3X_UART1 + default 0x101f1000 if ARCH_VERSATILE + default 0x101fb000 if DEBUG_NOMADIK_UART + default 0x16000000 if ARCH_INTEGRATOR + default 0x1c090000 if DEBUG_VEXPRESS_UART0_RS1 + default 0x20060000 if DEBUG_RK29_UART0 + default 0x20064000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 + default 0x20068000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 + default 0x20201000 if DEBUG_BCM2835 + default 0x40090000 if ARCH_LPC32XX + default 0x40100000 if DEBUG_PXA_UART1 + default 0x42000000 if ARCH_GEMINI + default 0x7c0003f8 if FOOTBRIDGE + default 0x80230000 if DEBUG_PICOXCELL_UART + default 0x80070000 if DEBUG_IMX23_UART + default 0x80074000 if DEBUG_IMX28_UART + default 0x808c0000 if ARCH_EP93XX + default 0x90020000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART + default 0xb0090000 if DEBUG_VEXPRESS_UART0_CRX + default 0xc0013000 if DEBUG_U300_UART + default 0xc8000000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN + default 0xc8000003 if ARCH_IXP4XX && CPU_BIG_ENDIAN + default 0xd0000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX + default 0xd0012000 if DEBUG_MVEBU_UART + default 0xd4017000 if DEBUG_MMP_UART2 + default 0xd4018000 if DEBUG_MMP_UART3 + default 0xe0000000 if ARCH_SPEAR13XX + default 0xf0000be0 if ARCH_EBSA110 + default 0xf1012000 if DEBUG_MVEBU_UART_ALTERNATE + default 0xf1012000 if ARCH_DOVE || ARCH_KIRKWOOD || ARCH_MV78XX0 || \ + ARCH_ORION5X + default 0xf8b00000 if DEBUG_HI3716_UART + default 0xfcb00000 if DEBUG_HI3620_UART + default 0xfe800000 if ARCH_IOP32X + default 0xffc02000 if DEBUG_SOCFPGA_UART + default 0xffd82340 if ARCH_IOP13XX + default 0xfff36000 if DEBUG_HIGHBANK_UART + default 0xfffff700 if ARCH_IOP33X + depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ + DEBUG_UART_8250 || DEBUG_UART_PL01X + +config DEBUG_UART_VIRT + hex "Virtual base address of debug UART" + default 0xe0010fe0 if ARCH_RPC + default 0xf0000be0 if ARCH_EBSA110 + default 0xf0009000 if DEBUG_CNS3XXX + default 0xf01fb000 if DEBUG_NOMADIK_UART + default 0xf0201000 if DEBUG_BCM2835 + default 0xf11f1000 if ARCH_VERSATILE + default 0xf1600000 if ARCH_INTEGRATOR + default 0xf1c28000 if DEBUG_SUNXI_UART0 + default 0xf1c28400 if DEBUG_SUNXI_UART1 + default 0xf2100000 if DEBUG_PXA_UART1 + default 0xf4090000 if ARCH_LPC32XX + default 0xf4200000 if ARCH_GEMINI + default 0xf8009000 if DEBUG_VEXPRESS_UART0_CA9 + default 0xf8090000 if DEBUG_VEXPRESS_UART0_RS1 + default 0xfb009000 if DEBUG_REALVIEW_STD_PORT + default 0xfb10c000 if DEBUG_REALVIEW_PB1176_PORT + default 0xfd000000 if ARCH_SPEAR3XX || ARCH_SPEAR6XX + default 0xfd000000 if ARCH_SPEAR13XX + default 0xfd012000 if ARCH_MV78XX0 + default 0xfde12000 if ARCH_DOVE + default 0xfe012000 if ARCH_ORION5X + default 0xfe017000 if DEBUG_MMP_UART2 + default 0xfe018000 if DEBUG_MMP_UART3 + default 0xfe100000 if DEBUG_IMX23_UART || DEBUG_IMX28_UART + default 0xfe230000 if DEBUG_PICOXCELL_UART + default 0xfe800000 if ARCH_IOP32X + default 0xfeb00000 if DEBUG_HI3620_UART || DEBUG_HI3716_UART + default 0xfeb24000 if DEBUG_RK3X_UART0 + default 0xfeb26000 if DEBUG_RK3X_UART1 + default 0xfeb30c00 if DEBUG_KEYSTONE_UART0 + default 0xfeb31000 if DEBUG_KEYSTONE_UART1 + default 0xfec12000 if DEBUG_MVEBU_UART || DEBUG_MVEBU_UART_ALTERNATE + default 0xfed60000 if DEBUG_RK29_UART0 + default 0xfed64000 if DEBUG_RK29_UART1 || DEBUG_RK3X_UART2 + default 0xfed68000 if DEBUG_RK29_UART2 || DEBUG_RK3X_UART3 + default 0xfec02000 if DEBUG_SOCFPGA_UART + default 0xfec20000 if DEBUG_DAVINCI_DMx_UART0 + default 0xfed0c000 if DEBUG_DAVINCI_DA8XX_UART1 + default 0xfed0d000 if DEBUG_DAVINCI_DA8XX_UART2 + default 0xfed12000 if ARCH_KIRKWOOD + default 0xfedc0000 if ARCH_EP93XX + default 0xfee003f8 if FOOTBRIDGE + default 0xfee08300 if DEBUG_DAVINCI_TNETV107X_UART1 + default 0xfee20000 if DEBUG_NSPIRE_CLASSIC_UART || DEBUG_NSPIRE_CX_UART + default 0xfef36000 if DEBUG_HIGHBANK_UART + default 0xfee82340 if ARCH_IOP13XX + default 0xfef00000 if ARCH_IXP4XX && !CPU_BIG_ENDIAN + default 0xfef00003 if ARCH_IXP4XX && CPU_BIG_ENDIAN + default 0xfefff700 if ARCH_IOP33X + default 0xff003000 if DEBUG_U300_UART + default DEBUG_UART_PHYS if !MMU + depends on DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \ + DEBUG_UART_8250 || DEBUG_UART_PL01X + +config DEBUG_UART_8250_SHIFT + int "Register offset shift for the 8250 debug UART" + depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 + default 0 if FOOTBRIDGE || ARCH_IOP32X + default 2 + +config DEBUG_UART_8250_WORD + bool "Use 32-bit accesses for 8250 UART" + depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 + depends on DEBUG_UART_8250_SHIFT >= 2 + default y if DEBUG_PICOXCELL_UART || DEBUG_SOCFPGA_UART || \ + ARCH_KEYSTONE || \ + DEBUG_DAVINCI_DMx_UART0 || DEBUG_DAVINCI_DA8XX_UART1 || \ + DEBUG_DAVINCI_DA8XX_UART2 || DEBUG_DAVINCI_TNETV107X_UART1 + +config DEBUG_UART_8250_FLOW_CONTROL + bool "Enable flow control for 8250 UART" + depends on DEBUG_LL_UART_8250 || DEBUG_UART_8250 + default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC + config DEBUG_UNCOMPRESS bool depends on ARCH_MULTIPLATFORM default y if DEBUG_LL && !DEBUG_OMAP2PLUS_UART && \ - !DEBUG_TEGRA_UART + (!DEBUG_TEGRA_UART || !ZBOOT_ROM) help This option influences the normal decompressor output for multiplatform kernels. Normally, multiplatform kernels disable diff --git a/arch/arm/common/mcpm_head.S b/arch/arm/common/mcpm_head.S index 80f033614a1f..39c96df3477a 100644 --- a/arch/arm/common/mcpm_head.S +++ b/arch/arm/common/mcpm_head.S @@ -151,7 +151,7 @@ mcpm_setup_leave: mov r0, #INBOUND_NOT_COMING_UP strb r0, [r8, #MCPM_SYNC_CLUSTER_INBOUND] - dsb + dsb st sev mov r0, r11 diff --git a/arch/arm/common/vlock.S b/arch/arm/common/vlock.S index ff198583f683..8b7df283fedf 100644 --- a/arch/arm/common/vlock.S +++ b/arch/arm/common/vlock.S @@ -42,7 +42,7 @@ dmb mov \rscratch, #0 strb \rscratch, [\rbase, \rcpu] - dsb + dsb st sev .endm @@ -102,7 +102,7 @@ ENTRY(vlock_unlock) dmb mov r1, #VLOCK_OWNER_NONE strb r1, [r0, #VLOCK_OWNER_OFFSET] - dsb + dsb st sev bx lr ENDPROC(vlock_unlock) diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h index a5fef710af32..fcc1b5bf6979 100644 --- a/arch/arm/include/asm/assembler.h +++ b/arch/arm/include/asm/assembler.h @@ -220,9 +220,9 @@ #ifdef CONFIG_SMP #if __LINUX_ARM_ARCH__ >= 7 .ifeqs "\mode","arm" - ALT_SMP(dmb) + ALT_SMP(dmb ish) .else - ALT_SMP(W(dmb)) + ALT_SMP(W(dmb) ish) .endif #elif __LINUX_ARM_ARCH__ == 6 ALT_SMP(mcr p15, 0, r0, c7, c10, 5) @ dmb diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h index 8dcd9c702d90..60f15e274e6d 100644 --- a/arch/arm/include/asm/barrier.h +++ b/arch/arm/include/asm/barrier.h @@ -14,27 +14,27 @@ #endif #if __LINUX_ARM_ARCH__ >= 7 -#define isb() __asm__ __volatile__ ("isb" : : : "memory") -#define dsb() __asm__ __volatile__ ("dsb" : : : "memory") -#define dmb() __asm__ __volatile__ ("dmb" : : : "memory") +#define isb(option) __asm__ __volatile__ ("isb " #option : : : "memory") +#define dsb(option) __asm__ __volatile__ ("dsb " #option : : : "memory") +#define dmb(option) __asm__ __volatile__ ("dmb " #option : : : "memory") #elif defined(CONFIG_CPU_XSC3) || __LINUX_ARM_ARCH__ == 6 -#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ +#define isb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ : : "r" (0) : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ +#define dsb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ +#define dmb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" \ : : "r" (0) : "memory") #elif defined(CONFIG_CPU_FA526) -#define isb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ +#define isb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c5, 4" \ : : "r" (0) : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ +#define dsb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") +#define dmb(x) __asm__ __volatile__ ("" : : : "memory") #else -#define isb() __asm__ __volatile__ ("" : : : "memory") -#define dsb() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ +#define isb(x) __asm__ __volatile__ ("" : : : "memory") +#define dsb(x) __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 4" \ : : "r" (0) : "memory") -#define dmb() __asm__ __volatile__ ("" : : : "memory") +#define dmb(x) __asm__ __volatile__ ("" : : : "memory") #endif #ifdef CONFIG_ARCH_HAS_BARRIERS @@ -42,7 +42,7 @@ #elif defined(CONFIG_ARM_DMA_MEM_BUFFERABLE) || defined(CONFIG_SMP) #define mb() do { dsb(); outer_sync(); } while (0) #define rmb() dsb() -#define wmb() mb() +#define wmb() do { dsb(st); outer_sync(); } while (0) #else #define mb() barrier() #define rmb() barrier() @@ -54,9 +54,9 @@ #define smp_rmb() barrier() #define smp_wmb() barrier() #else -#define smp_mb() dmb() -#define smp_rmb() dmb() -#define smp_wmb() dmb() +#define smp_mb() dmb(ish) +#define smp_rmb() smp_mb() +#define smp_wmb() dmb(ishst) #endif #define read_barrier_depends() do { } while(0) diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h index 17d0ae8672fa..15f2d5bf8875 100644 --- a/arch/arm/include/asm/cacheflush.h +++ b/arch/arm/include/asm/cacheflush.h @@ -268,8 +268,7 @@ extern void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr * Harvard caches are synchronised for the user space address range. * This is used for the ARM private sys_cacheflush system call. */ -#define flush_cache_user_range(start,end) \ - __cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end)) +#define flush_cache_user_range(s,e) __cpuc_coherent_user_range(s,e) /* * Perform necessary cache operations to ensure that data previously @@ -352,7 +351,7 @@ static inline void flush_cache_vmap(unsigned long start, unsigned long end) * set_pte_at() called from vmap_pte_range() does not * have a DSB after cleaning the cache line. */ - dsb(); + dsb(ishst); } static inline void flush_cache_vunmap(unsigned long start, unsigned long end) diff --git a/arch/arm/include/asm/hardware/debug-8250.S b/arch/arm/include/asm/hardware/debug-8250.S deleted file mode 100644 index 22c689255e6e..000000000000 --- a/arch/arm/include/asm/hardware/debug-8250.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/arm/include/asm/hardware/debug-8250.S - * - * Copyright (C) 1994-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <linux/serial_reg.h> - - .macro senduart,rd,rx - strb \rd, [\rx, #UART_TX << UART_SHIFT] - .endm - - .macro busyuart,rd,rx -1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT] - and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE - teq \rd, #UART_LSR_TEMT | UART_LSR_THRE - bne 1002b - .endm - - .macro waituart,rd,rx -#ifdef FLOW_CONTROL -1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT] - tst \rd, #UART_MSR_CTS - beq 1001b -#endif - .endm diff --git a/arch/arm/include/asm/mach/arch.h b/arch/arm/include/asm/mach/arch.h index 441efc491b50..69b879ac0289 100644 --- a/arch/arm/include/asm/mach/arch.h +++ b/arch/arm/include/asm/mach/arch.h @@ -65,12 +65,12 @@ struct machine_desc { /* * Current machine - only accessible during boot. */ -extern struct machine_desc *machine_desc; +extern const struct machine_desc *machine_desc; /* * Machine type table - also only accessible during boot */ -extern struct machine_desc __arch_info_begin[], __arch_info_end[]; +extern const struct machine_desc __arch_info_begin[], __arch_info_end[]; #define for_each_machine_desc(p) \ for (p = __arch_info_begin; p < __arch_info_end; p++) diff --git a/arch/arm/include/asm/memblock.h b/arch/arm/include/asm/memblock.h index 00ca5f92648e..c2f5102ae659 100644 --- a/arch/arm/include/asm/memblock.h +++ b/arch/arm/include/asm/memblock.h @@ -4,8 +4,7 @@ struct meminfo; struct machine_desc; -extern void arm_memblock_init(struct meminfo *, struct machine_desc *); - +void arm_memblock_init(struct meminfo *, const struct machine_desc *); phys_addr_t arm_memblock_steal(phys_addr_t size, phys_addr_t align); #endif diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h index 0d3a28dbc8e5..ed690c49ef93 100644 --- a/arch/arm/include/asm/module.h +++ b/arch/arm/include/asm/module.h @@ -12,6 +12,8 @@ enum { ARM_SEC_CORE, ARM_SEC_EXIT, ARM_SEC_DEVEXIT, + ARM_SEC_HOT, + ARM_SEC_UNLIKELY, ARM_SEC_MAX, }; diff --git a/arch/arm/include/asm/neon.h b/arch/arm/include/asm/neon.h new file mode 100644 index 000000000000..8f730fe70093 --- /dev/null +++ b/arch/arm/include/asm/neon.h @@ -0,0 +1,36 @@ +/* + * linux/arch/arm/include/asm/neon.h + * + * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <asm/hwcap.h> + +#define cpu_has_neon() (!!(elf_hwcap & HWCAP_NEON)) + +#ifdef __ARM_NEON__ + +/* + * If you are affected by the BUILD_BUG below, it probably means that you are + * using NEON code /and/ calling the kernel_neon_begin() function from the same + * compilation unit. To prevent issues that may arise from GCC reordering or + * generating(1) NEON instructions outside of these begin/end functions, the + * only supported way of using NEON code in the kernel is by isolating it in a + * separate compilation unit, and calling it from another unit from inside a + * kernel_neon_begin/kernel_neon_end pair. + * + * (1) Current GCC (4.7) might generate NEON instructions at O3 level if + * -mpfu=neon is set. + */ + +#define kernel_neon_begin() \ + BUILD_BUG_ON_MSG(1, "kernel_neon_begin() called from NEON code") + +#else +void kernel_neon_begin(void); +#endif +void kernel_neon_end(void); diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h index 04aeb02d2e11..be956dbf6bae 100644 --- a/arch/arm/include/asm/pgtable.h +++ b/arch/arm/include/asm/pgtable.h @@ -100,7 +100,7 @@ extern pgprot_t pgprot_s2_device; #define PAGE_HYP _MOD_PROT(pgprot_kernel, L_PTE_HYP) #define PAGE_HYP_DEVICE _MOD_PROT(pgprot_hyp_device, L_PTE_HYP) #define PAGE_S2 _MOD_PROT(pgprot_s2, L_PTE_S2_RDONLY) -#define PAGE_S2_DEVICE _MOD_PROT(pgprot_s2_device, L_PTE_USER | L_PTE_S2_RDONLY) +#define PAGE_S2_DEVICE _MOD_PROT(pgprot_s2_device, L_PTE_S2_RDWR) #define __PAGE_NONE __pgprot(_L_PTE_DEFAULT | L_PTE_RDONLY | L_PTE_XN | L_PTE_NONE) #define __PAGE_SHARED __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_XN) diff --git a/arch/arm/include/asm/prom.h b/arch/arm/include/asm/prom.h index a219227c3e43..4a2985e21969 100644 --- a/arch/arm/include/asm/prom.h +++ b/arch/arm/include/asm/prom.h @@ -15,13 +15,13 @@ #ifdef CONFIG_OF -extern struct machine_desc *setup_machine_fdt(unsigned int dt_phys); +extern const struct machine_desc *setup_machine_fdt(unsigned int dt_phys); extern void arm_dt_memblock_reserve(void); extern void __init arm_dt_init_cpu_maps(void); #else /* CONFIG_OF */ -static inline struct machine_desc *setup_machine_fdt(unsigned int dt_phys) +static inline const struct machine_desc *setup_machine_fdt(unsigned int dt_phys) { return NULL; } diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h index b07c09e5a0ac..4f2c28060c9a 100644 --- a/arch/arm/include/asm/spinlock.h +++ b/arch/arm/include/asm/spinlock.h @@ -46,7 +46,7 @@ static inline void dsb_sev(void) { #if __LINUX_ARM_ARCH__ >= 7 __asm__ __volatile__ ( - "dsb\n" + "dsb ishst\n" SEV ); #else diff --git a/arch/arm/include/asm/switch_to.h b/arch/arm/include/asm/switch_to.h index fa09e6b49bf1..c99e259469f7 100644 --- a/arch/arm/include/asm/switch_to.h +++ b/arch/arm/include/asm/switch_to.h @@ -4,6 +4,16 @@ #include <linux/thread_info.h> /* + * For v7 SMP cores running a preemptible kernel we may be pre-empted + * during a TLB maintenance operation, so execute an inner-shareable dsb + * to ensure that the maintenance completes in case we migrate to another + * CPU. + */ +#if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP) && defined(CONFIG_CPU_V7) +#define finish_arch_switch(prev) dsb(ish) +#endif + +/* * switch_to(prev, next) should switch from task `prev' to `next' * `prev' will never be the same as `next'. schedule() itself * contains the memory barrier to tell GCC not to cache `current'. diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 2b8114fcba09..df5e13d64f2c 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -43,6 +43,16 @@ struct cpu_context_save { __u32 extra[2]; /* Xscale 'acc' register, etc */ }; +struct arm_restart_block { + union { + /* For user cache flushing */ + struct { + unsigned long start; + unsigned long end; + } cache; + }; +}; + /* * low level task data that entry.S needs immediate access to. * __switch_to() assumes cpu_context follows immediately after cpu_domain. @@ -68,6 +78,7 @@ struct thread_info { unsigned long thumbee_state; /* ThumbEE Handler Base register */ #endif struct restart_block restart_block; + struct arm_restart_block arm_restart_block; }; #define INIT_THREAD_INFO(tsk) \ diff --git a/arch/arm/include/asm/tlbflush.h b/arch/arm/include/asm/tlbflush.h index f467e9b3f8d5..38960264040c 100644 --- a/arch/arm/include/asm/tlbflush.h +++ b/arch/arm/include/asm/tlbflush.h @@ -319,67 +319,110 @@ extern struct cpu_tlb_fns cpu_tlb; #define tlb_op(f, regs, arg) __tlb_op(f, "p15, 0, %0, " regs, arg) #define tlb_l2_op(f, regs, arg) __tlb_op(f, "p15, 1, %0, " regs, arg) -static inline void local_flush_tlb_all(void) +static inline void __local_flush_tlb_all(void) { const int zero = 0; const unsigned int __tlb_flag = __cpu_tlb_flags; - if (tlb_flag(TLB_WB)) - dsb(); - tlb_op(TLB_V4_U_FULL | TLB_V6_U_FULL, "c8, c7, 0", zero); tlb_op(TLB_V4_D_FULL | TLB_V6_D_FULL, "c8, c6, 0", zero); tlb_op(TLB_V4_I_FULL | TLB_V6_I_FULL, "c8, c5, 0", zero); - tlb_op(TLB_V7_UIS_FULL, "c8, c3, 0", zero); +} + +static inline void local_flush_tlb_all(void) +{ + const int zero = 0; + const unsigned int __tlb_flag = __cpu_tlb_flags; + + if (tlb_flag(TLB_WB)) + dsb(nshst); + + __local_flush_tlb_all(); + tlb_op(TLB_V7_UIS_FULL, "c8, c7, 0", zero); if (tlb_flag(TLB_BARRIER)) { - dsb(); + dsb(nsh); isb(); } } -static inline void local_flush_tlb_mm(struct mm_struct *mm) +static inline void __flush_tlb_all(void) { const int zero = 0; - const int asid = ASID(mm); const unsigned int __tlb_flag = __cpu_tlb_flags; if (tlb_flag(TLB_WB)) - dsb(); + dsb(ishst); + + __local_flush_tlb_all(); + tlb_op(TLB_V7_UIS_FULL, "c8, c3, 0", zero); + + if (tlb_flag(TLB_BARRIER)) { + dsb(ish); + isb(); + } +} + +static inline void __local_flush_tlb_mm(struct mm_struct *mm) +{ + const int zero = 0; + const int asid = ASID(mm); + const unsigned int __tlb_flag = __cpu_tlb_flags; if (possible_tlb_flags & (TLB_V4_U_FULL|TLB_V4_D_FULL|TLB_V4_I_FULL)) { - if (cpumask_test_cpu(get_cpu(), mm_cpumask(mm))) { + if (cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm))) { tlb_op(TLB_V4_U_FULL, "c8, c7, 0", zero); tlb_op(TLB_V4_D_FULL, "c8, c6, 0", zero); tlb_op(TLB_V4_I_FULL, "c8, c5, 0", zero); } - put_cpu(); } tlb_op(TLB_V6_U_ASID, "c8, c7, 2", asid); tlb_op(TLB_V6_D_ASID, "c8, c6, 2", asid); tlb_op(TLB_V6_I_ASID, "c8, c5, 2", asid); +} + +static inline void local_flush_tlb_mm(struct mm_struct *mm) +{ + const int asid = ASID(mm); + const unsigned int __tlb_flag = __cpu_tlb_flags; + + if (tlb_flag(TLB_WB)) + dsb(nshst); + + __local_flush_tlb_mm(mm); + tlb_op(TLB_V7_UIS_ASID, "c8, c7, 2", asid); + + if (tlb_flag(TLB_BARRIER)) + dsb(nsh); +} + +static inline void __flush_tlb_mm(struct mm_struct *mm) +{ + const unsigned int __tlb_flag = __cpu_tlb_flags; + + if (tlb_flag(TLB_WB)) + dsb(ishst); + + __local_flush_tlb_mm(mm); #ifdef CONFIG_ARM_ERRATA_720789 - tlb_op(TLB_V7_UIS_ASID, "c8, c3, 0", zero); + tlb_op(TLB_V7_UIS_ASID, "c8, c3, 0", 0); #else - tlb_op(TLB_V7_UIS_ASID, "c8, c3, 2", asid); + tlb_op(TLB_V7_UIS_ASID, "c8, c3, 2", ASID(mm)); #endif if (tlb_flag(TLB_BARRIER)) - dsb(); + dsb(ish); } static inline void -local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) +__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) { const int zero = 0; const unsigned int __tlb_flag = __cpu_tlb_flags; uaddr = (uaddr & PAGE_MASK) | ASID(vma->vm_mm); - if (tlb_flag(TLB_WB)) - dsb(); - if (possible_tlb_flags & (TLB_V4_U_PAGE|TLB_V4_D_PAGE|TLB_V4_I_PAGE|TLB_V4_I_FULL) && cpumask_test_cpu(smp_processor_id(), mm_cpumask(vma->vm_mm))) { tlb_op(TLB_V4_U_PAGE, "c8, c7, 1", uaddr); @@ -392,6 +435,36 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) tlb_op(TLB_V6_U_PAGE, "c8, c7, 1", uaddr); tlb_op(TLB_V6_D_PAGE, "c8, c6, 1", uaddr); tlb_op(TLB_V6_I_PAGE, "c8, c5, 1", uaddr); +} + +static inline void +local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) +{ + const unsigned int __tlb_flag = __cpu_tlb_flags; + + uaddr = (uaddr & PAGE_MASK) | ASID(vma->vm_mm); + + if (tlb_flag(TLB_WB)) + dsb(nshst); + + __local_flush_tlb_page(vma, uaddr); + tlb_op(TLB_V7_UIS_PAGE, "c8, c7, 1", uaddr); + + if (tlb_flag(TLB_BARRIER)) + dsb(nsh); +} + +static inline void +__flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) +{ + const unsigned int __tlb_flag = __cpu_tlb_flags; + + uaddr = (uaddr & PAGE_MASK) | ASID(vma->vm_mm); + + if (tlb_flag(TLB_WB)) + dsb(ishst); + + __local_flush_tlb_page(vma, uaddr); #ifdef CONFIG_ARM_ERRATA_720789 tlb_op(TLB_V7_UIS_PAGE, "c8, c3, 3", uaddr & PAGE_MASK); #else @@ -399,19 +472,14 @@ local_flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) #endif if (tlb_flag(TLB_BARRIER)) - dsb(); + dsb(ish); } -static inline void local_flush_tlb_kernel_page(unsigned long kaddr) +static inline void __local_flush_tlb_kernel_page(unsigned long kaddr) { const int zero = 0; const unsigned int __tlb_flag = __cpu_tlb_flags; - kaddr &= PAGE_MASK; - - if (tlb_flag(TLB_WB)) - dsb(); - tlb_op(TLB_V4_U_PAGE, "c8, c7, 1", kaddr); tlb_op(TLB_V4_D_PAGE, "c8, c6, 1", kaddr); tlb_op(TLB_V4_I_PAGE, "c8, c5, 1", kaddr); @@ -421,26 +489,75 @@ static inline void local_flush_tlb_kernel_page(unsigned long kaddr) tlb_op(TLB_V6_U_PAGE, "c8, c7, 1", kaddr); tlb_op(TLB_V6_D_PAGE, "c8, c6, 1", kaddr); tlb_op(TLB_V6_I_PAGE, "c8, c5, 1", kaddr); +} + +static inline void local_flush_tlb_kernel_page(unsigned long kaddr) +{ + const unsigned int __tlb_flag = __cpu_tlb_flags; + + kaddr &= PAGE_MASK; + + if (tlb_flag(TLB_WB)) + dsb(nshst); + + __local_flush_tlb_kernel_page(kaddr); + tlb_op(TLB_V7_UIS_PAGE, "c8, c7, 1", kaddr); + + if (tlb_flag(TLB_BARRIER)) { + dsb(nsh); + isb(); + } +} + +static inline void __flush_tlb_kernel_page(unsigned long kaddr) +{ + const unsigned int __tlb_flag = __cpu_tlb_flags; + + kaddr &= PAGE_MASK; + + if (tlb_flag(TLB_WB)) + dsb(ishst); + + __local_flush_tlb_kernel_page(kaddr); tlb_op(TLB_V7_UIS_PAGE, "c8, c3, 1", kaddr); if (tlb_flag(TLB_BARRIER)) { - dsb(); + dsb(ish); isb(); } } +/* + * Branch predictor maintenance is paired with full TLB invalidation, so + * there is no need for any barriers here. + */ +static inline void __local_flush_bp_all(void) +{ + const int zero = 0; + const unsigned int __tlb_flag = __cpu_tlb_flags; + + if (tlb_flag(TLB_V6_BP)) + asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero)); +} + static inline void local_flush_bp_all(void) { const int zero = 0; const unsigned int __tlb_flag = __cpu_tlb_flags; + __local_flush_bp_all(); if (tlb_flag(TLB_V7_UIS_BP)) - asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero)); - else if (tlb_flag(TLB_V6_BP)) asm("mcr p15, 0, %0, c7, c5, 6" : : "r" (zero)); +} - if (tlb_flag(TLB_BARRIER)) - isb(); +static inline void __flush_bp_all(void) +{ + const int zero = 0; + const unsigned int __tlb_flag = __cpu_tlb_flags; + + __local_flush_bp_all(); + if (tlb_flag(TLB_V7_UIS_BP)) + asm("mcr p15, 0, %0, c7, c1, 6" : : "r" (zero)); } #include <asm/cputype.h> @@ -461,7 +578,7 @@ static inline void dummy_flush_tlb_a15_erratum(void) * Dummy TLBIMVAIS. Using the unmapped address 0 and ASID 0. */ asm("mcr p15, 0, %0, c8, c3, 1" : : "r" (0)); - dsb(); + dsb(ish); } #else static inline int erratum_a15_798181(void) @@ -495,7 +612,7 @@ static inline void flush_pmd_entry(void *pmd) tlb_l2_op(TLB_L2CLEAN_FR, "c15, c9, 1 @ L2 flush_pmd", pmd); if (tlb_flag(TLB_WB)) - dsb(); + dsb(ishst); } static inline void clean_pmd_entry(void *pmd) diff --git a/arch/arm/include/asm/types.h b/arch/arm/include/asm/types.h new file mode 100644 index 000000000000..a53cdb8f068c --- /dev/null +++ b/arch/arm/include/asm/types.h @@ -0,0 +1,40 @@ +#ifndef _ASM_TYPES_H +#define _ASM_TYPES_H + +#include <asm-generic/int-ll64.h> + +/* + * The C99 types uintXX_t that are usually defined in 'stdint.h' are not as + * unambiguous on ARM as you would expect. For the types below, there is a + * difference on ARM between GCC built for bare metal ARM, GCC built for glibc + * and the kernel itself, which results in build errors if you try to build with + * -ffreestanding and include 'stdint.h' (such as when you include 'arm_neon.h' + * in order to use NEON intrinsics) + * + * As the typedefs for these types in 'stdint.h' are based on builtin defines + * supplied by GCC, we can tweak these to align with the kernel's idea of those + * types, so 'linux/types.h' and 'stdint.h' can be safely included from the same + * source file (provided that -ffreestanding is used). + * + * int32_t uint32_t uintptr_t + * bare metal GCC long unsigned long unsigned int + * glibc GCC int unsigned int unsigned int + * kernel int unsigned int unsigned long + */ + +#ifdef __INT32_TYPE__ +#undef __INT32_TYPE__ +#define __INT32_TYPE__ int +#endif + +#ifdef __UINT32_TYPE__ +#undef __UINT32_TYPE__ +#define __UINT32_TYPE__ unsigned int +#endif + +#ifdef __UINTPTR_TYPE__ +#undef __UINTPTR_TYPE__ +#define __UINTPTR_TYPE__ unsigned long +#endif + +#endif /* _ASM_TYPES_H */ diff --git a/arch/arm/include/asm/v7m.h b/arch/arm/include/asm/v7m.h index fa88d09fa3d9..615781c61627 100644 --- a/arch/arm/include/asm/v7m.h +++ b/arch/arm/include/asm/v7m.h @@ -15,6 +15,10 @@ #define V7M_SCB_VTOR 0x08 +#define V7M_SCB_AIRCR 0x0c +#define V7M_SCB_AIRCR_VECTKEY (0x05fa << 16) +#define V7M_SCB_AIRCR_SYSRESETREQ (1 << 2) + #define V7M_SCB_SCR 0x10 #define V7M_SCB_SCR_SLEEPDEEP (1 << 2) @@ -42,3 +46,11 @@ */ #define EXC_RET_STACK_MASK 0x00000004 #define EXC_RET_THREADMODE_PROCESSSTACK 0xfffffffd + +#ifndef __ASSEMBLY__ + +enum reboot_mode; + +void armv7m_restart(enum reboot_mode mode, const char *cmd); + +#endif /* __ASSEMBLY__ */ diff --git a/arch/arm/include/asm/xor.h b/arch/arm/include/asm/xor.h index 7604673dc427..4ffb26d4cad8 100644 --- a/arch/arm/include/asm/xor.h +++ b/arch/arm/include/asm/xor.h @@ -7,7 +7,10 @@ * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ +#include <linux/hardirq.h> #include <asm-generic/xor.h> +#include <asm/hwcap.h> +#include <asm/neon.h> #define __XOR(a1, a2) a1 ^= a2 @@ -138,4 +141,74 @@ static struct xor_block_template xor_block_arm4regs = { xor_speed(&xor_block_arm4regs); \ xor_speed(&xor_block_8regs); \ xor_speed(&xor_block_32regs); \ + NEON_TEMPLATES; \ } while (0) + +#ifdef CONFIG_KERNEL_MODE_NEON + +extern struct xor_block_template const xor_block_neon_inner; + +static void +xor_neon_2(unsigned long bytes, unsigned long *p1, unsigned long *p2) +{ + if (in_interrupt()) { + xor_arm4regs_2(bytes, p1, p2); + } else { + kernel_neon_begin(); + xor_block_neon_inner.do_2(bytes, p1, p2); + kernel_neon_end(); + } +} + +static void +xor_neon_3(unsigned long bytes, unsigned long *p1, unsigned long *p2, + unsigned long *p3) +{ + if (in_interrupt()) { + xor_arm4regs_3(bytes, p1, p2, p3); + } else { + kernel_neon_begin(); + xor_block_neon_inner.do_3(bytes, p1, p2, p3); + kernel_neon_end(); + } +} + +static void +xor_neon_4(unsigned long bytes, unsigned long *p1, unsigned long *p2, + unsigned long *p3, unsigned long *p4) +{ + if (in_interrupt()) { + xor_arm4regs_4(bytes, p1, p2, p3, p4); + } else { + kernel_neon_begin(); + xor_block_neon_inner.do_4(bytes, p1, p2, p3, p4); + kernel_neon_end(); + } +} + +static void +xor_neon_5(unsigned long bytes, unsigned long *p1, unsigned long *p2, + unsigned long *p3, unsigned long *p4, unsigned long *p5) +{ + if (in_interrupt()) { + xor_arm4regs_5(bytes, p1, p2, p3, p4, p5); + } else { + kernel_neon_begin(); + xor_block_neon_inner.do_5(bytes, p1, p2, p3, p4, p5); + kernel_neon_end(); + } +} + +static struct xor_block_template xor_block_neon = { + .name = "neon", + .do_2 = xor_neon_2, + .do_3 = xor_neon_3, + .do_4 = xor_neon_4, + .do_5 = xor_neon_5 +}; + +#define NEON_TEMPLATES \ + do { if (cpu_has_neon()) xor_speed(&xor_block_neon); } while (0) +#else +#define NEON_TEMPLATES +#endif diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S new file mode 100644 index 000000000000..7a2baf913aa0 --- /dev/null +++ b/arch/arm/include/debug/8250.S @@ -0,0 +1,54 @@ +/* + * arch/arm/include/debug/8250.S + * + * Copyright (C) 1994-2013 Russell King + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#include <linux/serial_reg.h> + + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm + +#ifdef CONFIG_DEBUG_UART_8250_WORD + .macro store, rd, rx:vararg + str \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldr \rd, \rx + .endm +#else + .macro store, rd, rx:vararg + strb \rd, \rx + .endm + + .macro load, rd, rx:vararg + ldrb \rd, \rx + .endm +#endif + +#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT + + .macro senduart,rd,rx + store \rd, [\rx, #UART_TX << UART_SHIFT] + .endm + + .macro busyuart,rd,rx +1002: load \rd, [\rx, #UART_LSR << UART_SHIFT] + and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE + teq \rd, #UART_LSR_TEMT | UART_LSR_THRE + bne 1002b + .endm + + .macro waituart,rd,rx +#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL +1001: load \rd, [\rx, #UART_MSR << UART_SHIFT] + tst \rd, #UART_MSR_CTS + beq 1001b +#endif + .endm diff --git a/arch/arm/include/debug/8250_32.S b/arch/arm/include/debug/8250_32.S deleted file mode 100644 index 8db01eeabbb4..000000000000 --- a/arch/arm/include/debug/8250_32.S +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Derived from arch/arm/mach-davinci/include/mach/debug-macro.S to use 32-bit - * accesses to the 8250. - */ - -#include <linux/serial_reg.h> - - .macro senduart,rd,rx - str \rd, [\rx, #UART_TX << UART_SHIFT] - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] - and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE - teq \rd, #UART_LSR_TEMT | UART_LSR_THRE - bne 1002b - .endm - - /* The UART's don't have any flow control IO's wired up. */ - .macro waituart,rd,rx - .endm diff --git a/arch/arm/include/debug/bcm2835.S b/arch/arm/include/debug/bcm2835.S deleted file mode 100644 index aed9199bd847..000000000000 --- a/arch/arm/include/debug/bcm2835.S +++ /dev/null @@ -1,22 +0,0 @@ -/* - * Debugging macro include header - * - * Copyright (C) 2010 Broadcom - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#define BCM2835_DEBUG_PHYS 0x20201000 -#define BCM2835_DEBUG_VIRT 0xf0201000 - - .macro addruart, rp, rv, tmp - ldr \rp, =BCM2835_DEBUG_PHYS - ldr \rv, =BCM2835_DEBUG_VIRT - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/cns3xxx.S b/arch/arm/include/debug/cns3xxx.S deleted file mode 100644 index d04c150baa1c..000000000000 --- a/arch/arm/include/debug/cns3xxx.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Debugging macro include header - * - * Copyright 1994-1999 Russell King - * Copyright 2008 Cavium Networks - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This file is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, Version 2, as - * published by the Free Software Foundation. - */ - - .macro addruart,rp,rv,tmp - mov \rp, #0x00009000 - orr \rv, \rp, #0xf0000000 @ virtual base - orr \rp, \rp, #0x10000000 - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/highbank.S b/arch/arm/include/debug/highbank.S deleted file mode 100644 index 8cad4322a5a2..000000000000 --- a/arch/arm/include/debug/highbank.S +++ /dev/null @@ -1,17 +0,0 @@ -/* - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - .macro addruart,rp,rv,tmp - ldr \rv, =0xfee36000 - ldr \rp, =0xfff36000 - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/keystone.S b/arch/arm/include/debug/keystone.S deleted file mode 100644 index 9aef9ba3f4f0..000000000000 --- a/arch/arm/include/debug/keystone.S +++ /dev/null @@ -1,43 +0,0 @@ -/* - * Early serial debug output macro for Keystone SOCs - * - * Copyright 2013 Texas Instruments, Inc. - * Santosh Shilimkar <santosh.shilimkar@ti.com> - * - * Based on RMKs low level debug code. - * Copyright (C) 1994-1999 Russell King - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/serial_reg.h> - -#define UART_SHIFT 2 -#if defined(CONFIG_DEBUG_KEYSTONE_UART0) -#define UART_PHYS 0x02530c00 -#define UART_VIRT 0xfeb30c00 -#elif defined(CONFIG_DEBUG_KEYSTONE_UART1) -#define UART_PHYS 0x02531000 -#define UART_VIRT 0xfeb31000 -#endif - - .macro addruart, rp, rv, tmp - ldr \rv, =UART_VIRT @ physical base address - ldr \rp, =UART_PHYS @ virtual base address - .endm - - .macro senduart,rd,rx - str \rd, [\rx, #UART_TX << UART_SHIFT] - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] - and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE - teq \rd, #UART_LSR_TEMT | UART_LSR_THRE - bne 1002b - .endm - - .macro waituart,rd,rx - .endm diff --git a/arch/arm/include/debug/mvebu.S b/arch/arm/include/debug/mvebu.S deleted file mode 100644 index 6517311a1c91..000000000000 --- a/arch/arm/include/debug/mvebu.S +++ /dev/null @@ -1,30 +0,0 @@ -/* - * Early serial output macro for Marvell SoC - * - * Copyright (C) 2012 Marvell - * - * Lior Amsalem <alior@marvell.com> - * Gregory Clement <gregory.clement@free-electrons.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#ifdef CONFIG_DEBUG_MVEBU_UART_ALTERNATE -#define ARMADA_370_XP_REGS_PHYS_BASE 0xf1000000 -#else -#define ARMADA_370_XP_REGS_PHYS_BASE 0xd0000000 -#endif - -#define ARMADA_370_XP_REGS_VIRT_BASE 0xfec00000 - - .macro addruart, rp, rv, tmp - ldr \rp, =ARMADA_370_XP_REGS_PHYS_BASE - ldr \rv, =ARMADA_370_XP_REGS_VIRT_BASE - orr \rp, \rp, #0x00012000 - orr \rv, \rv, #0x00012000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/include/debug/mxs.S b/arch/arm/include/debug/mxs.S deleted file mode 100644 index d86951551ca1..000000000000 --- a/arch/arm/include/debug/mxs.S +++ /dev/null @@ -1,27 +0,0 @@ -/* arch/arm/mach-mxs/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#ifdef CONFIG_DEBUG_IMX23_UART -#define UART_PADDR 0x80070000 -#elif defined (CONFIG_DEBUG_IMX28_UART) -#define UART_PADDR 0x80074000 -#endif - -#define UART_VADDR 0xfe100000 - - .macro addruart, rp, rv, tmp - ldr \rp, =UART_PADDR @ physical - ldr \rv, =UART_VADDR @ virtual - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/nomadik.S b/arch/arm/include/debug/nomadik.S deleted file mode 100644 index 735417922ce2..000000000000 --- a/arch/arm/include/debug/nomadik.S +++ /dev/null @@ -1,20 +0,0 @@ -/* - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -*/ - - .macro addruart, rp, rv, tmp - mov \rp, #0x00100000 - add \rp, \rp, #0x000fb000 - add \rv, \rp, #0xf0000000 @ virtual base - add \rp, \rp, #0x10000000 @ physical base address - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/nspire.S b/arch/arm/include/debug/nspire.S deleted file mode 100644 index 886fd276fcbc..000000000000 --- a/arch/arm/include/debug/nspire.S +++ /dev/null @@ -1,28 +0,0 @@ -/* - * linux/arch/arm/include/debug/nspire.S - * - * Copyright (C) 2013 Daniel Tang <tangrs@tangrs.id.au> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2, as - * published by the Free Software Foundation. - * - */ - -#define NSPIRE_EARLY_UART_PHYS_BASE 0x90020000 -#define NSPIRE_EARLY_UART_VIRT_BASE 0xfee20000 - -.macro addruart, rp, rv, tmp - ldr \rp, =(NSPIRE_EARLY_UART_PHYS_BASE) @ physical base address - ldr \rv, =(NSPIRE_EARLY_UART_VIRT_BASE) @ virtual base address -.endm - - -#ifdef CONFIG_DEBUG_NSPIRE_CX_UART -#include <asm/hardware/debug-pl01x.S> -#endif - -#ifdef CONFIG_DEBUG_NSPIRE_CLASSIC_UART -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> -#endif diff --git a/arch/arm/include/debug/picoxcell.S b/arch/arm/include/debug/picoxcell.S deleted file mode 100644 index bc1f07c49cd4..000000000000 --- a/arch/arm/include/debug/picoxcell.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * Copyright (c) 2011 Picochip Ltd., Jamie Iles - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#define UART_SHIFT 2 -#define PICOXCELL_UART1_BASE 0x80230000 -#define PHYS_TO_IO(x) (((x) & 0x00ffffff) | 0xfe000000) - - .macro addruart, rp, rv, tmp - ldr \rv, =PHYS_TO_IO(PICOXCELL_UART1_BASE) - ldr \rp, =PICOXCELL_UART1_BASE - .endm - -#include "8250_32.S" diff --git a/arch/arm/include/asm/hardware/debug-pl01x.S b/arch/arm/include/debug/pl01x.S index f9fd083eff63..37c6895b87e6 100644 --- a/arch/arm/include/asm/hardware/debug-pl01x.S +++ b/arch/arm/include/debug/pl01x.S @@ -1,4 +1,4 @@ -/* arch/arm/include/asm/hardware/debug-pl01x.S +/* arch/arm/include/debug/pl01x.S * * Debugging macro include header * @@ -12,6 +12,13 @@ */ #include <linux/amba/serial.h> +#ifdef CONFIG_DEBUG_UART_PHYS + .macro addruart, rp, rv, tmp + ldr \rp, =CONFIG_DEBUG_UART_PHYS + ldr \rv, =CONFIG_DEBUG_UART_VIRT + .endm +#endif + .macro senduart,rd,rx strb \rd, [\rx, #UART01x_DR] .endm diff --git a/arch/arm/include/debug/pxa.S b/arch/arm/include/debug/pxa.S deleted file mode 100644 index e1e795aa3d7f..000000000000 --- a/arch/arm/include/debug/pxa.S +++ /dev/null @@ -1,33 +0,0 @@ -/* - * Early serial output macro for Marvell PXA/MMP SoC - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * Copyright (C) 2013 Haojian Zhuang - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#if defined(CONFIG_DEBUG_PXA_UART1) -#define PXA_UART_REG_PHYS_BASE 0x40100000 -#define PXA_UART_REG_VIRT_BASE 0xf2100000 -#elif defined(CONFIG_DEBUG_MMP_UART2) -#define PXA_UART_REG_PHYS_BASE 0xd4017000 -#define PXA_UART_REG_VIRT_BASE 0xfe017000 -#elif defined(CONFIG_DEBUG_MMP_UART3) -#define PXA_UART_REG_PHYS_BASE 0xd4018000 -#define PXA_UART_REG_VIRT_BASE 0xfe018000 -#else -#error "Select uart for DEBUG_LL" -#endif - - .macro addruart, rp, rv, tmp - ldr \rp, =PXA_UART_REG_PHYS_BASE - ldr \rv, =PXA_UART_REG_VIRT_BASE - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/include/debug/rockchip.S b/arch/arm/include/debug/rockchip.S deleted file mode 100644 index cfd883e69588..000000000000 --- a/arch/arm/include/debug/rockchip.S +++ /dev/null @@ -1,42 +0,0 @@ -/* - * Early serial output macro for Rockchip SoCs - * - * Copyright (C) 2012 Maxime Ripard - * - * Maxime Ripard <maxime.ripard@free-electrons.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#if defined(CONFIG_DEBUG_RK29_UART0) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20060000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed60000 -#elif defined(CONFIG_DEBUG_RK29_UART1) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20064000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed64000 -#elif defined(CONFIG_DEBUG_RK29_UART2) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20068000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed68000 -#elif defined(CONFIG_DEBUG_RK3X_UART0) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x10124000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfeb24000 -#elif defined(CONFIG_DEBUG_RK3X_UART1) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x10126000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfeb26000 -#elif defined(CONFIG_DEBUG_RK3X_UART2) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20064000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed64000 -#elif defined(CONFIG_DEBUG_RK3X_UART3) -#define ROCKCHIP_UART_DEBUG_PHYS_BASE 0x20068000 -#define ROCKCHIP_UART_DEBUG_VIRT_BASE 0xfed68000 -#endif - - .macro addruart, rp, rv, tmp - ldr \rp, =ROCKCHIP_UART_DEBUG_PHYS_BASE - ldr \rv, =ROCKCHIP_UART_DEBUG_VIRT_BASE - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/include/debug/socfpga.S b/arch/arm/include/debug/socfpga.S deleted file mode 100644 index 966b2f994946..000000000000 --- a/arch/arm/include/debug/socfpga.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#define UART_SHIFT 2 -#define DEBUG_LL_UART_OFFSET 0x00002000 - - .macro addruart, rp, rv, tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rp, \rp, #0x00c00000 - orr \rv, \rp, #0xfe000000 @ virtual base - orr \rp, \rp, #0xff000000 @ physical base - .endm - -#include "8250_32.S" - diff --git a/arch/arm/include/debug/sunxi.S b/arch/arm/include/debug/sunxi.S deleted file mode 100644 index 04eb56d5db2c..000000000000 --- a/arch/arm/include/debug/sunxi.S +++ /dev/null @@ -1,27 +0,0 @@ -/* - * Early serial output macro for Allwinner A1X SoCs - * - * Copyright (C) 2012 Maxime Ripard - * - * Maxime Ripard <maxime.ripard@free-electrons.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#if defined(CONFIG_DEBUG_SUNXI_UART0) -#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28000 -#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28000 -#elif defined(CONFIG_DEBUG_SUNXI_UART1) -#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28400 -#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28400 -#endif - - .macro addruart, rp, rv, tmp - ldr \rp, =SUNXI_UART_DEBUG_PHYS_BASE - ldr \rv, =SUNXI_UART_DEBUG_VIRT_BASE - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/include/debug/tegra.S b/arch/arm/include/debug/tegra.S index 883d7c22fd9d..be6a720dd183 100644 --- a/arch/arm/include/debug/tegra.S +++ b/arch/arm/include/debug/tegra.S @@ -221,3 +221,32 @@ 1002: #endif .endm + +/* + * Storage for the state maintained by the macros above. + * + * In the kernel proper, this data is located in arch/arm/mach-tegra/common.c. + * That's because this header is included from multiple files, and we only + * want a single copy of the data. In particular, the UART probing code above + * assumes it's running using physical addresses. This is true when this file + * is included from head.o, but not when included from debug.o. So we need + * to share the probe results between the two copies, rather than having + * to re-run the probing again later. + * + * In the decompressor, we put the symbol/storage right here, since common.c + * isn't included in the decompressor build. This symbol gets put in .text + * even though it's really data, since .data is discarded from the + * decompressor. Luckily, .text is writeable in the decompressor, unless + * CONFIG_ZBOOT_ROM. That dependency is handled in arch/arm/Kconfig.debug. + */ +#if defined(ZIMAGE) +tegra_uart_config: + /* Debug UART initialization required */ + .word 1 + /* Debug UART physical address */ + .word 0 + /* Debug UART virtual address */ + .word 0 + /* Scratch space for debug macro */ + .word 0 +#endif diff --git a/arch/arm/include/debug/u300.S b/arch/arm/include/debug/u300.S deleted file mode 100644 index 6f04f08a203c..000000000000 --- a/arch/arm/include/debug/u300.S +++ /dev/null @@ -1,18 +0,0 @@ -/* - * Copyright (C) 2006-2013 ST-Ericsson AB - * License terms: GNU General Public License (GPL) version 2 - * Debugging macro include header. - * Author: Linus Walleij <linus.walleij@stericsson.com> - */ -#define U300_SLOW_PER_PHYS_BASE 0xc0010000 -#define U300_SLOW_PER_VIRT_BASE 0xff000000 - - .macro addruart, rp, rv, tmp - /* If we move the address using MMU, use this. */ - ldr \rp, = U300_SLOW_PER_PHYS_BASE @ MMU off, physical address - ldr \rv, = U300_SLOW_PER_VIRT_BASE @ MMU on, virtual address - orr \rp, \rp, #0x00003000 - orr \rv, \rv, #0x00003000 - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/include/debug/ux500.S b/arch/arm/include/debug/ux500.S index fbd24beeb1fa..aa7f63a8b5e0 100644 --- a/arch/arm/include/debug/ux500.S +++ b/arch/arm/include/debug/ux500.S @@ -45,4 +45,4 @@ ldr \rv, =UART_VIRT_BASE @ yes, virtual address .endm -#include <asm/hardware/debug-pl01x.S> +#include <debug/pl01x.S> diff --git a/arch/arm/include/debug/vexpress.S b/arch/arm/include/debug/vexpress.S index acafb229e2b6..524acd5a223e 100644 --- a/arch/arm/include/debug/vexpress.S +++ b/arch/arm/include/debug/vexpress.S @@ -47,51 +47,5 @@ .endm -#include <asm/hardware/debug-pl01x.S> - -#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CA9) - - .macro addruart,rp,rv,tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rv, \rp, #DEBUG_LL_VIRT_BASE - orr \rp, \rp, #DEBUG_LL_PHYS_BASE - .endm - -#include <asm/hardware/debug-pl01x.S> - -#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_RS1) - - .macro addruart,rp,rv,tmp - mov \rp, #DEBUG_LL_UART_OFFSET_RS1 - orr \rv, \rp, #DEBUG_LL_VIRT_BASE - orr \rp, \rp, #DEBUG_LL_PHYS_BASE_RS1 - .endm - -#include <asm/hardware/debug-pl01x.S> - -#elif defined(CONFIG_DEBUG_VEXPRESS_UART0_CRX) - - .macro addruart,rp,tmp,tmp2 - ldr \rp, =DEBUG_LL_UART_PHYS_CRX - .endm - -#include <asm/hardware/debug-pl01x.S> - -#else /* CONFIG_DEBUG_LL_UART_NONE */ - - .macro addruart, rp, rv, tmp - /* Safe dummy values */ - mov \rp, #0 - mov \rv, #DEBUG_LL_VIRT_BASE - .endm - - .macro senduart,rd,rx - .endm - - .macro waituart,rd,rx - .endm - - .macro busyuart,rd,rx - .endm - +#include <debug/pl01x.S> #endif diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 86d10dd47dc4..5140df5f23aa 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -24,7 +24,7 @@ obj-$(CONFIG_ATAGS_PROC) += atags_proc.o obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += atags_compat.o ifeq ($(CONFIG_CPU_V7M),y) -obj-y += entry-v7m.o +obj-y += entry-v7m.o v7m.o else obj-y += entry-armv.o endif diff --git a/arch/arm/kernel/atags.h b/arch/arm/kernel/atags.h index 9edc9692332d..ec4164da6e30 100644 --- a/arch/arm/kernel/atags.h +++ b/arch/arm/kernel/atags.h @@ -7,9 +7,10 @@ static inline void save_atags(struct tag *tags) { } void convert_to_tag_list(struct tag *tags); #ifdef CONFIG_ATAGS -struct machine_desc *setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr); +const struct machine_desc *setup_machine_tags(phys_addr_t __atags_pointer, + unsigned int machine_nr); #else -static inline struct machine_desc * +static inline const struct machine_desc * setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr) { early_print("no ATAGS support: can't continue\n"); diff --git a/arch/arm/kernel/atags_parse.c b/arch/arm/kernel/atags_parse.c index 14512e6931d8..8c14de8180c0 100644 --- a/arch/arm/kernel/atags_parse.c +++ b/arch/arm/kernel/atags_parse.c @@ -178,11 +178,11 @@ static void __init squash_mem_tags(struct tag *tag) tag->hdr.tag = ATAG_NONE; } -struct machine_desc * __init setup_machine_tags(phys_addr_t __atags_pointer, - unsigned int machine_nr) +const struct machine_desc * __init +setup_machine_tags(phys_addr_t __atags_pointer, unsigned int machine_nr) { struct tag *tags = (struct tag *)&default_tags; - struct machine_desc *mdesc = NULL, *p; + const struct machine_desc *mdesc = NULL, *p; char *from = default_command_line; default_tags.mem.start = PHYS_OFFSET; diff --git a/arch/arm/kernel/devtree.c b/arch/arm/kernel/devtree.c index 2ee8a17d2b01..f35906b3d8c9 100644 --- a/arch/arm/kernel/devtree.c +++ b/arch/arm/kernel/devtree.c @@ -181,10 +181,10 @@ bool arch_match_cpu_phys_id(int cpu, u64 phys_id) * If a dtb was passed to the kernel in r2, then use it to choose the * correct machine_desc and to setup the system. */ -struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) +const struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) { struct boot_param_header *devtree; - struct machine_desc *mdesc, *mdesc_best = NULL; + const struct machine_desc *mdesc, *mdesc_best = NULL; unsigned int score, mdesc_score = ~1; unsigned long dt_root; const char *model; @@ -193,7 +193,7 @@ struct machine_desc * __init setup_machine_fdt(unsigned int dt_phys) DT_MACHINE_START(GENERIC_DT, "Generic DT based system") MACHINE_END - mdesc_best = (struct machine_desc *)&__mach_desc_GENERIC_DT; + mdesc_best = &__mach_desc_GENERIC_DT; #endif if (!dt_phys) diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S index 94104bf69719..74ad15d1a065 100644 --- a/arch/arm/kernel/entry-common.S +++ b/arch/arm/kernel/entry-common.S @@ -442,10 +442,10 @@ local_restart: ldrcc pc, [tbl, scno, lsl #2] @ call sys_* routine add r1, sp, #S_OFF -2: mov why, #0 @ no longer a real syscall cmp scno, #(__ARM_NR_BASE - __NR_SYSCALL_BASE) eor r0, scno, #__NR_SYSCALL_BASE @ put OS number back - bcs arm_syscall + bcs arm_syscall +2: mov why, #0 @ no longer a real syscall b sys_ni_syscall @ not private func #if defined(CONFIG_OABI_COMPAT) || !defined(CONFIG_AEABI) diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c index 85c3fb6c93c2..084dc8896986 100644 --- a/arch/arm/kernel/module.c +++ b/arch/arm/kernel/module.c @@ -292,12 +292,20 @@ int module_finalize(const Elf32_Ehdr *hdr, const Elf_Shdr *sechdrs, maps[ARM_SEC_CORE].unw_sec = s; else if (strcmp(".ARM.exidx.exit.text", secname) == 0) maps[ARM_SEC_EXIT].unw_sec = s; + else if (strcmp(".ARM.exidx.text.unlikely", secname) == 0) + maps[ARM_SEC_UNLIKELY].unw_sec = s; + else if (strcmp(".ARM.exidx.text.hot", secname) == 0) + maps[ARM_SEC_HOT].unw_sec = s; else if (strcmp(".init.text", secname) == 0) maps[ARM_SEC_INIT].txt_sec = s; else if (strcmp(".text", secname) == 0) maps[ARM_SEC_CORE].txt_sec = s; else if (strcmp(".exit.text", secname) == 0) maps[ARM_SEC_EXIT].txt_sec = s; + else if (strcmp(".text.unlikely", secname) == 0) + maps[ARM_SEC_UNLIKELY].txt_sec = s; + else if (strcmp(".text.hot", secname) == 0) + maps[ARM_SEC_HOT].txt_sec = s; } for (i = 0; i < ARM_SEC_MAX; i++) diff --git a/arch/arm/kernel/perf_event_cpu.c b/arch/arm/kernel/perf_event_cpu.c index aebe0e99c153..8d6147b2001f 100644 --- a/arch/arm/kernel/perf_event_cpu.c +++ b/arch/arm/kernel/perf_event_cpu.c @@ -118,7 +118,8 @@ static int cpu_pmu_request_irq(struct arm_pmu *cpu_pmu, irq_handler_t handler) continue; } - err = request_irq(irq, handler, IRQF_NOBALANCING, "arm-pmu", + err = request_irq(irq, handler, + IRQF_NOBALANCING | IRQF_NO_THREAD, "arm-pmu", cpu_pmu); if (err) { pr_err("unable to request IRQ%d for ARM PMU counters\n", diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c index afc2489ee13b..0e1e2b3afa45 100644 --- a/arch/arm/kernel/setup.c +++ b/arch/arm/kernel/setup.c @@ -72,10 +72,10 @@ static int __init fpe_setup(char *line) __setup("fpe=", fpe_setup); #endif -extern void paging_init(struct machine_desc *desc); +extern void paging_init(const struct machine_desc *desc); extern void sanity_check_meminfo(void); extern enum reboot_mode reboot_mode; -extern void setup_dma_zone(struct machine_desc *desc); +extern void setup_dma_zone(const struct machine_desc *desc); unsigned int processor_id; EXPORT_SYMBOL(processor_id); @@ -139,7 +139,7 @@ EXPORT_SYMBOL(elf_platform); static const char *cpu_name; static const char *machine_name; static char __initdata cmd_line[COMMAND_LINE_SIZE]; -struct machine_desc *machine_desc __initdata; +const struct machine_desc *machine_desc __initdata; static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } }; #define ENDIANNESS ((char)endian_test.l) @@ -607,7 +607,7 @@ static void __init setup_processor(void) void __init dump_machine_table(void) { - struct machine_desc *p; + const struct machine_desc *p; early_print("Available machine support:\n\nID (hex)\tNAME\n"); for_each_machine_desc(p) @@ -694,7 +694,7 @@ static int __init early_mem(char *p) } early_param("mem", early_mem); -static void __init request_standard_resources(struct machine_desc *mdesc) +static void __init request_standard_resources(const struct machine_desc *mdesc) { struct memblock_region *region; struct resource *res; @@ -852,7 +852,7 @@ void __init hyp_mode_check(void) void __init setup_arch(char **cmdline_p) { - struct machine_desc *mdesc; + const struct machine_desc *mdesc; setup_processor(); mdesc = setup_machine_fdt(__atags_pointer); @@ -994,15 +994,6 @@ static int c_show(struct seq_file *m, void *v) seq_printf(m, "model name\t: %s rev %d (%s)\n", cpu_name, cpuid & 15, elf_platform); -#if defined(CONFIG_SMP) - seq_printf(m, "BogoMIPS\t: %lu.%02lu\n", - per_cpu(cpu_data, i).loops_per_jiffy / (500000UL/HZ), - (per_cpu(cpu_data, i).loops_per_jiffy / (5000UL/HZ)) % 100); -#else - seq_printf(m, "BogoMIPS\t: %lu.%02lu\n", - loops_per_jiffy / (500000/HZ), - (loops_per_jiffy / (5000/HZ)) % 100); -#endif /* dump out the processor features */ seq_puts(m, "Features\t: "); diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 2dc19349eb19..92d10e503746 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -398,17 +398,8 @@ asmlinkage void secondary_start_kernel(void) void __init smp_cpus_done(unsigned int max_cpus) { - int cpu; - unsigned long bogosum = 0; - - for_each_online_cpu(cpu) - bogosum += per_cpu(cpu_data, cpu).loops_per_jiffy; - - printk(KERN_INFO "SMP: Total of %d processors activated " - "(%lu.%02lu BogoMIPS).\n", - num_online_cpus(), - bogosum / (500000/HZ), - (bogosum / (5000/HZ)) % 100); + printk(KERN_INFO "SMP: Total of %d processors activated.\n", + num_online_cpus()); hyp_mode_check(); } diff --git a/arch/arm/kernel/smp_tlb.c b/arch/arm/kernel/smp_tlb.c index c2edfff573c2..83ccca303df8 100644 --- a/arch/arm/kernel/smp_tlb.c +++ b/arch/arm/kernel/smp_tlb.c @@ -104,7 +104,7 @@ void flush_tlb_all(void) if (tlb_ops_need_broadcast()) on_each_cpu(ipi_flush_tlb_all, NULL, 1); else - local_flush_tlb_all(); + __flush_tlb_all(); broadcast_tlb_a15_erratum(); } @@ -113,7 +113,7 @@ void flush_tlb_mm(struct mm_struct *mm) if (tlb_ops_need_broadcast()) on_each_cpu_mask(mm_cpumask(mm), ipi_flush_tlb_mm, mm, 1); else - local_flush_tlb_mm(mm); + __flush_tlb_mm(mm); broadcast_tlb_mm_a15_erratum(mm); } @@ -126,7 +126,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long uaddr) on_each_cpu_mask(mm_cpumask(vma->vm_mm), ipi_flush_tlb_page, &ta, 1); } else - local_flush_tlb_page(vma, uaddr); + __flush_tlb_page(vma, uaddr); broadcast_tlb_mm_a15_erratum(vma->vm_mm); } @@ -137,7 +137,7 @@ void flush_tlb_kernel_page(unsigned long kaddr) ta.ta_start = kaddr; on_each_cpu(ipi_flush_tlb_kernel_page, &ta, 1); } else - local_flush_tlb_kernel_page(kaddr); + __flush_tlb_kernel_page(kaddr); broadcast_tlb_a15_erratum(); } @@ -173,5 +173,5 @@ void flush_bp_all(void) if (tlb_ops_need_broadcast()) on_each_cpu(ipi_flush_bp_all, NULL, 1); else - local_flush_bp_all(); + __flush_bp_all(); } diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c index ab517fcce21b..8fcda140358d 100644 --- a/arch/arm/kernel/traps.c +++ b/arch/arm/kernel/traps.c @@ -497,28 +497,64 @@ static int bad_syscall(int n, struct pt_regs *regs) return regs->ARM_r0; } +static long do_cache_op_restart(struct restart_block *); + static inline int -do_cache_op(unsigned long start, unsigned long end, int flags) +__do_cache_op(unsigned long start, unsigned long end) { - struct mm_struct *mm = current->active_mm; - struct vm_area_struct *vma; + int ret; + unsigned long chunk = PAGE_SIZE; + + do { + if (signal_pending(current)) { + struct thread_info *ti = current_thread_info(); + + ti->restart_block = (struct restart_block) { + .fn = do_cache_op_restart, + }; + + ti->arm_restart_block = (struct arm_restart_block) { + { + .cache = { + .start = start, + .end = end, + }, + }, + }; + + return -ERESTART_RESTARTBLOCK; + } + + ret = flush_cache_user_range(start, start + chunk); + if (ret) + return ret; + cond_resched(); + start += chunk; + } while (start < end); + + return 0; +} + +static long do_cache_op_restart(struct restart_block *unused) +{ + struct arm_restart_block *restart_block; + + restart_block = ¤t_thread_info()->arm_restart_block; + return __do_cache_op(restart_block->cache.start, + restart_block->cache.end); +} + +static inline int +do_cache_op(unsigned long start, unsigned long end, int flags) +{ if (end < start || flags) return -EINVAL; - down_read(&mm->mmap_sem); - vma = find_vma(mm, start); - if (vma && vma->vm_start < end) { - if (start < vma->vm_start) - start = vma->vm_start; - if (end > vma->vm_end) - end = vma->vm_end; + if (!access_ok(VERIFY_READ, start, end - start)) + return -EFAULT; - up_read(&mm->mmap_sem); - return flush_cache_user_range(start, end); - } - up_read(&mm->mmap_sem); - return -EINVAL; + return __do_cache_op(start, end); } /* diff --git a/arch/arm/kernel/v7m.c b/arch/arm/kernel/v7m.c new file mode 100644 index 000000000000..4d2cba94f5cc --- /dev/null +++ b/arch/arm/kernel/v7m.c @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2013 Uwe Kleine-Koenig for Pengutronix + * + * This program is free software; you can redistribute it and/or modify it under + * the terms of the GNU General Public License version 2 as published by the + * Free Software Foundation. + */ +#include <linux/io.h> +#include <linux/reboot.h> +#include <asm/barrier.h> +#include <asm/v7m.h> + +void armv7m_restart(enum reboot_mode mode, const char *cmd) +{ + dsb(); + __raw_writel(V7M_SCB_AIRCR_VECTKEY | V7M_SCB_AIRCR_SYSRESETREQ, + BASEADDR_V7M_SCB + V7M_SCB_AIRCR); + dsb(); +} diff --git a/arch/arm/kvm/init.S b/arch/arm/kvm/init.S index f048338135f7..1b9844d369cc 100644 --- a/arch/arm/kvm/init.S +++ b/arch/arm/kvm/init.S @@ -142,7 +142,7 @@ target: @ We're now in the trampoline code, switch page tables @ Invalidate the old TLBs mcr p15, 4, r0, c8, c7, 0 @ TLBIALLH - dsb + dsb ish eret diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S index 85dd84b10687..ddc15539bad2 100644 --- a/arch/arm/kvm/interrupts.S +++ b/arch/arm/kvm/interrupts.S @@ -55,7 +55,7 @@ ENTRY(__kvm_tlb_flush_vmid_ipa) mcrr p15, 6, r2, r3, c2 @ Write VTTBR isb mcr p15, 0, r0, c8, c3, 0 @ TLBIALLIS (rt ignored) - dsb + dsb ish isb mov r2, #0 mov r3, #0 @@ -79,7 +79,7 @@ ENTRY(__kvm_flush_vm_context) mcr p15, 4, r0, c8, c3, 4 /* Invalidate instruction caches Inner Shareable (ICIALLUIS) */ mcr p15, 0, r0, c7, c1, 0 - dsb + dsb ish isb @ Not necessary if followed by eret bx lr diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 0988d9e04dd4..b0de86b56c13 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -489,7 +489,6 @@ int kvm_phys_addr_ioremap(struct kvm *kvm, phys_addr_t guest_ipa, for (addr = guest_ipa; addr < end; addr += PAGE_SIZE) { pte_t pte = pfn_pte(pfn, PAGE_S2_DEVICE); - kvm_set_s2pte_writable(&pte); ret = mmu_topup_memory_cache(&cache, 2, 2); if (ret) diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile index af72969820b4..aaf3a8731136 100644 --- a/arch/arm/lib/Makefile +++ b/arch/arm/lib/Makefile @@ -45,3 +45,9 @@ lib-$(CONFIG_ARCH_SHARK) += io-shark.o $(obj)/csumpartialcopy.o: $(obj)/csumpartialcopygeneric.S $(obj)/csumpartialcopyuser.o: $(obj)/csumpartialcopygeneric.S + +ifeq ($(CONFIG_KERNEL_MODE_NEON),y) + NEON_FLAGS := -mfloat-abi=softfp -mfpu=neon + CFLAGS_xor-neon.o += $(NEON_FLAGS) + lib-$(CONFIG_XOR_BLOCKS) += xor-neon.o +endif diff --git a/arch/arm/lib/xor-neon.c b/arch/arm/lib/xor-neon.c new file mode 100644 index 000000000000..f485e5a2af4b --- /dev/null +++ b/arch/arm/lib/xor-neon.c @@ -0,0 +1,42 @@ +/* + * linux/arch/arm/lib/xor-neon.c + * + * Copyright (C) 2013 Linaro Ltd <ard.biesheuvel@linaro.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/raid/xor.h> + +#ifndef __ARM_NEON__ +#error You should compile this file with '-mfloat-abi=softfp -mfpu=neon' +#endif + +/* + * Pull in the reference implementations while instructing GCC (through + * -ftree-vectorize) to attempt to exploit implicit parallelism and emit + * NEON instructions. + */ +#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6) +#pragma GCC optimize "tree-vectorize" +#else +/* + * While older versions of GCC do not generate incorrect code, they fail to + * recognize the parallel nature of these functions, and emit plain ARM code, + * which is known to be slower than the optimized ARM code in asm-arm/xor.h. + */ +#warning This code requires at least version 4.6 of GCC +#endif + +#pragma GCC diagnostic ignored "-Wunused-variable" +#include <asm-generic/xor.h> + +struct xor_block_template const xor_block_neon_inner = { + .name = "__inner_neon__", + .do_2 = xor_8regs_2, + .do_3 = xor_8regs_3, + .do_4 = xor_8regs_4, + .do_5 = xor_8regs_5, +}; diff --git a/arch/arm/mach-davinci/include/mach/debug-macro.S b/arch/arm/mach-davinci/include/mach/debug-macro.S deleted file mode 100644 index b18b8ebc6508..000000000000 --- a/arch/arm/mach-davinci/include/mach/debug-macro.S +++ /dev/null @@ -1,65 +0,0 @@ -/* - * Debugging macro for DaVinci - * - * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> - * - * 2007 (c) MontaVista Software, Inc. This file is licensed under - * the terms of the GNU General Public License version 2. This program - * is licensed "as is" without any warranty of any kind, whether express - * or implied. - */ - -/* Modifications - * Jan 2009 Chaithrika U S Added senduart, busyuart, waituart - * macros, based on debug-8250.S file - * but using 32-bit accesses required for - * some davinci devices. - */ - -#include <linux/serial_reg.h> - -#include <mach/serial.h> - -#define UART_SHIFT 2 - -#if defined(CONFIG_DEBUG_DAVINCI_DMx_UART0) -#define UART_BASE DAVINCI_UART0_BASE -#elif defined(CONFIG_DEBUG_DAVINCI_DA8XX_UART1) -#define UART_BASE DA8XX_UART1_BASE -#elif defined(CONFIG_DEBUG_DAVINCI_DA8XX_UART2) -#define UART_BASE DA8XX_UART2_BASE -#elif defined(CONFIG_DEBUG_DAVINCI_TNETV107X_UART1) -#define UART_BASE TNETV107X_UART2_BASE -#define UART_VIRTBASE TNETV107X_UART2_VIRT -#else -#error "Select a specifc port for DEBUG_LL" -#endif - -#ifndef UART_VIRTBASE -#define UART_VIRTBASE IO_ADDRESS(UART_BASE) -#endif - - .macro addruart, rp, rv, tmp - ldr \rp, =UART_BASE - ldr \rv, =UART_VIRTBASE - .endm - - .macro senduart,rd,rx - str \rd, [\rx, #UART_TX << UART_SHIFT] - .endm - - .macro busyuart,rd,rx -1002: ldr \rd, [\rx, #UART_LSR << UART_SHIFT] - and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE - teq \rd, #UART_LSR_TEMT | UART_LSR_THRE - bne 1002b - .endm - - .macro waituart,rd,rx -#ifdef FLOW_CONTROL -1001: ldr \rd, [\rx, #UART_MSR << UART_SHIFT] - tst \rd, #UART_MSR_CTS - beq 1001b -#endif - .endm - diff --git a/arch/arm/mach-dove/include/mach/debug-macro.S b/arch/arm/mach-dove/include/mach/debug-macro.S deleted file mode 100644 index 5929cbc59161..000000000000 --- a/arch/arm/mach-dove/include/mach/debug-macro.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * arch/arm/mach-dove/include/mach/debug-macro.S - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <mach/bridge-regs.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =DOVE_SB_REGS_PHYS_BASE - ldr \rv, =DOVE_SB_REGS_VIRT_BASE - orr \rp, \rp, #0x00012000 - orr \rv, \rv, #0x00012000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-ebsa110/include/mach/debug-macro.S b/arch/arm/mach-ebsa110/include/mach/debug-macro.S deleted file mode 100644 index bb02c05e6812..000000000000 --- a/arch/arm/mach-ebsa110/include/mach/debug-macro.S +++ /dev/null @@ -1,22 +0,0 @@ -/* arch/arm/mach-ebsa110/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -**/ - - .macro addruart, rp, rv, tmp - mov \rp, #0xf0000000 - orr \rp, \rp, #0x00000be0 - mov \rp, \rv - .endm - -#define UART_SHIFT 2 -#define FLOW_CONTROL -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-ep93xx/Kconfig b/arch/arm/mach-ep93xx/Kconfig index fe3c1fa5462b..93e54fd4e3d5 100644 --- a/arch/arm/mach-ep93xx/Kconfig +++ b/arch/arm/mach-ep93xx/Kconfig @@ -194,20 +194,6 @@ config MACH_VISION_EP9307 Say 'Y' here if you want your kernel to support the Vision Engraving Systems EP9307 SoM. -choice - prompt "Select a UART for early kernel messages" - -config EP93XX_EARLY_UART1 - bool "UART1" - -config EP93XX_EARLY_UART2 - bool "UART2" - -config EP93XX_EARLY_UART3 - bool "UART3" - -endchoice - endmenu endif diff --git a/arch/arm/mach-ep93xx/include/mach/debug-macro.S b/arch/arm/mach-ep93xx/include/mach/debug-macro.S deleted file mode 100644 index af54e43132cf..000000000000 --- a/arch/arm/mach-ep93xx/include/mach/debug-macro.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * arch/arm/mach-ep93xx/include/mach/debug-macro.S - * Debugging macro include header - * - * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - */ -#include <mach/ep93xx-regs.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =EP93XX_APB_PHYS_BASE @ Physical base - ldr \rv, =EP93XX_APB_VIRT_BASE @ virtual base - orr \rp, \rp, #0x000c0000 - orr \rv, \rv, #0x000c0000 - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-ep93xx/include/mach/uncompress.h b/arch/arm/mach-ep93xx/include/mach/uncompress.h index b5cc77d2380b..03c42e5400d2 100644 --- a/arch/arm/mach-ep93xx/include/mach/uncompress.h +++ b/arch/arm/mach-ep93xx/include/mach/uncompress.h @@ -31,18 +31,8 @@ static void __raw_writel(unsigned int value, unsigned int ptr) *((volatile unsigned int *)ptr) = value; } -#if defined(CONFIG_EP93XX_EARLY_UART1) -#define UART_BASE EP93XX_UART1_PHYS_BASE -#elif defined(CONFIG_EP93XX_EARLY_UART2) -#define UART_BASE EP93XX_UART2_PHYS_BASE -#elif defined(CONFIG_EP93XX_EARLY_UART3) -#define UART_BASE EP93XX_UART3_PHYS_BASE -#else -#define UART_BASE EP93XX_UART1_PHYS_BASE -#endif - -#define PHYS_UART_DATA (UART_BASE + 0x00) -#define PHYS_UART_FLAG (UART_BASE + 0x18) +#define PHYS_UART_DATA (CONFIG_DEBUG_UART_PHYS + 0x00) +#define PHYS_UART_FLAG (CONFIG_DEBUG_UART_PHYS + 0x18) #define UART_FLAG_TXFF 0x20 static inline void putc(int c) diff --git a/arch/arm/mach-footbridge/include/mach/debug-macro.S b/arch/arm/mach-footbridge/include/mach/debug-macro.S index c169f0c99b2a..02247f313e94 100644 --- a/arch/arm/mach-footbridge/include/mach/debug-macro.S +++ b/arch/arm/mach-footbridge/include/mach/debug-macro.S @@ -13,20 +13,6 @@ #include <asm/hardware/dec21285.h> -#ifndef CONFIG_DEBUG_DC21285_PORT - /* For NetWinder debugging */ - .macro addruart, rp, rv, tmp - mov \rp, #0x000003f8 - orr \rv, \rp, #0xfe000000 @ virtual - orr \rv, \rv, #0x00e00000 @ virtual - orr \rp, \rp, #0x7c000000 @ physical - .endm - -#define UART_SHIFT 0 -#define FLOW_CONTROL -#include <asm/hardware/debug-8250.S> - -#else #include <mach/hardware.h> /* For EBSA285 debugging */ .equ dc21285_high, ARMCSR_BASE & 0xff000000 @@ -54,4 +40,3 @@ .macro waituart,rd,rx .endm -#endif diff --git a/arch/arm/mach-gemini/include/mach/debug-macro.S b/arch/arm/mach-gemini/include/mach/debug-macro.S deleted file mode 100644 index 837670763b85..000000000000 --- a/arch/arm/mach-gemini/include/mach/debug-macro.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Copyright (C) 2001-2006 Storlink, Corp. - * Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ -#include <mach/hardware.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =GEMINI_UART_BASE @ physical - ldr \rv, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual - .endm - -#define UART_SHIFT 2 -#define FLOW_CONTROL -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-integrator/include/mach/debug-macro.S b/arch/arm/mach-integrator/include/mach/debug-macro.S deleted file mode 100644 index 411b116077e4..000000000000 --- a/arch/arm/mach-integrator/include/mach/debug-macro.S +++ /dev/null @@ -1,20 +0,0 @@ -/* arch/arm/mach-integrator/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -*/ - - .macro addruart, rp, rv, tmp - mov \rp, #0x16000000 @ physical base address - mov \rv, #0xf0000000 @ virtual base - add \rv, \rv, #0x16000000 >> 4 - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-iop13xx/include/mach/debug-macro.S b/arch/arm/mach-iop13xx/include/mach/debug-macro.S deleted file mode 100644 index d869a6f67e5c..000000000000 --- a/arch/arm/mach-iop13xx/include/mach/debug-macro.S +++ /dev/null @@ -1,24 +0,0 @@ -/* - * arch/arm/mach-iop13xx/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - .macro addruart, rp, rv, tmp - mov \rp, #0x00002300 - orr \rp, \rp, #0x00000040 - orr \rv, \rp, #0xfe000000 @ virtual - orr \rv, \rv, #0x00e80000 - orr \rp, \rp, #0xff000000 @ physical - orr \rp, \rp, #0x00d80000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-iop32x/include/mach/debug-macro.S b/arch/arm/mach-iop32x/include/mach/debug-macro.S deleted file mode 100644 index 363bdf90b34d..000000000000 --- a/arch/arm/mach-iop32x/include/mach/debug-macro.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * arch/arm/mach-iop32x/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - .macro addruart, rp, rv, tmp - mov \rp, #0xfe000000 @ physical as well as virtual - orr \rp, \rp, #0x00800000 @ location of the UART - mov \rv, \rp - .endm - -#define UART_SHIFT 0 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-iop33x/include/mach/debug-macro.S b/arch/arm/mach-iop33x/include/mach/debug-macro.S deleted file mode 100644 index 361be1f6026e..000000000000 --- a/arch/arm/mach-iop33x/include/mach/debug-macro.S +++ /dev/null @@ -1,22 +0,0 @@ -/* - * arch/arm/mach-iop33x/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - - .macro addruart, rp, rv, tmp - mov \rp, #0x00ff0000 - orr \rp, \rp, #0x0000f700 - orr \rv, #0xfe000000 @ virtual - orr \rp, #0xff000000 @ physical - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-ixp4xx/include/mach/debug-macro.S b/arch/arm/mach-ixp4xx/include/mach/debug-macro.S deleted file mode 100644 index ff686cbc5df4..000000000000 --- a/arch/arm/mach-ixp4xx/include/mach/debug-macro.S +++ /dev/null @@ -1,26 +0,0 @@ -/* arch/arm/mach-ixp4xx/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - - .macro addruart, rp, rv, tmp -#ifdef __ARMEB__ - mov \rp, #3 @ Uart regs are at off set of 3 if - @ byte writes used - Big Endian. -#else - mov \rp, #0 -#endif - orr \rv, \rp, #0xfe000000 @ virtual - orr \rv, \rv, #0x00f00000 - orr \rp, \rp, #0xc8000000 @ physical - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-kirkwood/include/mach/debug-macro.S b/arch/arm/mach-kirkwood/include/mach/debug-macro.S deleted file mode 100644 index f785d401a607..000000000000 --- a/arch/arm/mach-kirkwood/include/mach/debug-macro.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * arch/arm/mach-kirkwood/include/mach/debug-macro.S - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <mach/bridge-regs.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =KIRKWOOD_REGS_PHYS_BASE - ldr \rv, =KIRKWOOD_REGS_VIRT_BASE - orr \rp, \rp, #0x00012000 - orr \rv, \rv, #0x00012000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-lpc32xx/include/mach/debug-macro.S b/arch/arm/mach-lpc32xx/include/mach/debug-macro.S deleted file mode 100644 index 351bd6c84909..000000000000 --- a/arch/arm/mach-lpc32xx/include/mach/debug-macro.S +++ /dev/null @@ -1,29 +0,0 @@ -/* - * arch/arm/mach-lpc32xx/include/mach/debug-macro.S - * - * Author: Kevin Wells <kevin.wells@nxp.com> - * - * Copyright (C) 2010 NXP Semiconductors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ - -/* - * Debug output is hardcoded to standard UART 5 -*/ - - .macro addruart, rp, rv, tmp - ldreq \rp, =0x40090000 - ldrne \rv, =0xF4090000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-mv78xx0/include/mach/debug-macro.S b/arch/arm/mach-mv78xx0/include/mach/debug-macro.S deleted file mode 100644 index a7df02b049b7..000000000000 --- a/arch/arm/mach-mv78xx0/include/mach/debug-macro.S +++ /dev/null @@ -1,19 +0,0 @@ -/* - * arch/arm/mach-mv78xx0/include/mach/debug-macro.S - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <mach/mv78xx0.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =MV78XX0_REGS_PHYS_BASE - ldr \rv, =MV78XX0_REGS_VIRT_BASE - orr \rp, \rp, #0x00012000 - orr \rv, \rv, #0x00012000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-orion5x/include/mach/debug-macro.S b/arch/arm/mach-orion5x/include/mach/debug-macro.S deleted file mode 100644 index f340ed8f8dd0..000000000000 --- a/arch/arm/mach-orion5x/include/mach/debug-macro.S +++ /dev/null @@ -1,21 +0,0 @@ -/* - * arch/arm/mach-orion5x/include/mach/debug-macro.S - * - * Debugging macro include header - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. -*/ - -#include <mach/orion5x.h> - - .macro addruart, rp, rv, tmp - ldr \rp, =ORION5X_REGS_PHYS_BASE - ldr \rv, =ORION5X_REGS_VIRT_BASE - orr \rp, \rp, #0x00012000 - orr \rv, \rv, #0x00012000 - .endm - -#define UART_SHIFT 2 -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-realview/include/mach/debug-macro.S b/arch/arm/mach-realview/include/mach/debug-macro.S deleted file mode 100644 index 8cc372dc66a8..000000000000 --- a/arch/arm/mach-realview/include/mach/debug-macro.S +++ /dev/null @@ -1,29 +0,0 @@ -/* arch/arm/mach-realview/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#ifdef CONFIG_DEBUG_REALVIEW_STD_PORT -#define DEBUG_LL_UART_OFFSET 0x00009000 -#elif defined(CONFIG_DEBUG_REALVIEW_PB1176_PORT) -#define DEBUG_LL_UART_OFFSET 0x0010c000 -#endif - -#ifndef DEBUG_LL_UART_OFFSET -#error "Unknown RealView platform" -#endif - - .macro addruart, rp, rv, tmp - mov \rp, #DEBUG_LL_UART_OFFSET - orr \rv, \rp, #0xfb000000 @ virtual base - orr \rp, \rp, #0x10000000 @ physical base - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mach-rpc/include/mach/debug-macro.S b/arch/arm/mach-rpc/include/mach/debug-macro.S deleted file mode 100644 index 6d28cc99b124..000000000000 --- a/arch/arm/mach-rpc/include/mach/debug-macro.S +++ /dev/null @@ -1,23 +0,0 @@ -/* arch/arm/mach-rpc/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -*/ - - .macro addruart, rp, rv, tmp - mov \rp, #0x00010000 - orr \rp, \rp, #0x00000fe0 - orr \rv, \rp, #0xe0000000 @ virtual - orr \rp, \rp, #0x03000000 @ physical - .endm - -#define UART_SHIFT 2 -#define FLOW_CONTROL -#include <asm/hardware/debug-8250.S> diff --git a/arch/arm/mach-spear/include/mach/debug-macro.S b/arch/arm/mach-spear/include/mach/debug-macro.S deleted file mode 100644 index 75b05ad0fbad..000000000000 --- a/arch/arm/mach-spear/include/mach/debug-macro.S +++ /dev/null @@ -1,36 +0,0 @@ -/* - * arch/arm/plat-spear/include/plat/debug-macro.S - * - * Debugging macro include header for spear platform - * - * Copyright (C) 2009 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include <linux/amba/serial.h> -#include <mach/spear.h> - - .macro addruart, rp, rv, tmp - mov \rp, #SPEAR_DBG_UART_BASE @ Physical base - mov \rv, #VA_SPEAR_DBG_UART_BASE @ Virtual base - .endm - - .macro senduart, rd, rx - strb \rd, [\rx, #UART01x_DR] @ ASC_TX_BUFFER - .endm - - .macro waituart, rd, rx -1001: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER - tst \rd, #UART01x_FR_TXFF @ TX_FULL - bne 1001b - .endm - - .macro busyuart, rd, rx -1002: ldr \rd, [\rx, #UART01x_FR] @ FLAG REGISTER - tst \rd, #UART011_FR_TXFE @ TX_EMPTY - beq 1002b - .endm diff --git a/arch/arm/mach-spear/include/mach/spear.h b/arch/arm/mach-spear/include/mach/spear.h index cf3a5369eeca..5cdc53d9b653 100644 --- a/arch/arm/mach-spear/include/mach/spear.h +++ b/arch/arm/mach-spear/include/mach/spear.h @@ -39,7 +39,6 @@ /* Debug uart for linux, will be used for debug and uncompress messages */ #define SPEAR_DBG_UART_BASE SPEAR_ICM1_UART_BASE -#define VA_SPEAR_DBG_UART_BASE VA_SPEAR_ICM1_UART_BASE /* Sysctl base for spear platform */ #define SPEAR_SYS_CTRL_BASE SPEAR_ICM3_SYS_CTRL_BASE @@ -86,7 +85,6 @@ /* Debug uart for linux, will be used for debug and uncompress messages */ #define SPEAR_DBG_UART_BASE UART_BASE -#define VA_SPEAR_DBG_UART_BASE VA_UART_BASE #endif /* SPEAR13XX */ diff --git a/arch/arm/mach-versatile/include/mach/debug-macro.S b/arch/arm/mach-versatile/include/mach/debug-macro.S deleted file mode 100644 index d0fbd7f1cb00..000000000000 --- a/arch/arm/mach-versatile/include/mach/debug-macro.S +++ /dev/null @@ -1,21 +0,0 @@ -/* arch/arm/mach-versatile/include/mach/debug-macro.S - * - * Debugging macro include header - * - * Copyright (C) 1994-1999 Russell King - * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * -*/ - - .macro addruart, rp, rv, tmp - mov \rp, #0x001F0000 - orr \rp, \rp, #0x00001000 - orr \rv, \rp, #0xf1000000 @ virtual base - orr \rp, \rp, #0x10000000 @ physical base - .endm - -#include <asm/hardware/debug-pl01x.S> diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c index d70e0aba0c9d..447da6ffadd5 100644 --- a/arch/arm/mm/cache-l2x0.c +++ b/arch/arm/mm/cache-l2x0.c @@ -290,7 +290,7 @@ static void l2x0_disable(void) raw_spin_lock_irqsave(&l2x0_lock, flags); __l2x0_flush_all(); writel_relaxed(0, l2x0_base + L2X0_CTRL); - dsb(); + dsb(st); raw_spin_unlock_irqrestore(&l2x0_lock, flags); } @@ -417,9 +417,9 @@ void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask) outer_cache.disable = l2x0_disable; } - printk(KERN_INFO "%s cache controller enabled\n", type); - printk(KERN_INFO "l2x0: %d ways, CACHE_ID 0x%08x, AUX_CTRL 0x%08x, Cache size: %d B\n", - ways, cache_id, aux, l2x0_size); + pr_info("%s cache controller enabled\n", type); + pr_info("l2x0: %d ways, CACHE_ID 0x%08x, AUX_CTRL 0x%08x, Cache size: %d kB\n", + ways, cache_id, aux, l2x0_size >> 10); } #ifdef CONFIG_OF @@ -929,7 +929,9 @@ static const struct of_device_id l2x0_ids[] __initconst = { .data = (void *)&aurora_no_outer_data}, { .compatible = "marvell,aurora-outer-cache", .data = (void *)&aurora_with_outer_data}, - { .compatible = "bcm,bcm11351-a2-pl310-cache", + { .compatible = "brcm,bcm11351-a2-pl310-cache", + .data = (void *)&bcm_l2x0_data}, + { .compatible = "bcm,bcm11351-a2-pl310-cache", /* deprecated name */ .data = (void *)&bcm_l2x0_data}, {} }; diff --git a/arch/arm/mm/cache-v7.S b/arch/arm/mm/cache-v7.S index 515b00064da8..b5c467a65c27 100644 --- a/arch/arm/mm/cache-v7.S +++ b/arch/arm/mm/cache-v7.S @@ -282,7 +282,7 @@ ENTRY(v7_coherent_user_range) add r12, r12, r2 cmp r12, r1 blo 1b - dsb + dsb ishst icache_line_size r2, r3 sub r3, r2, #1 bic r12, r0, r3 @@ -294,7 +294,7 @@ ENTRY(v7_coherent_user_range) mov r0, #0 ALT_SMP(mcr p15, 0, r0, c7, c1, 6) @ invalidate BTB Inner Shareable ALT_UP(mcr p15, 0, r0, c7, c5, 6) @ invalidate BTB - dsb + dsb ishst isb mov pc, lr diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c index 4a0544492f10..84e6f772e204 100644 --- a/arch/arm/mm/context.c +++ b/arch/arm/mm/context.c @@ -162,10 +162,7 @@ static void flush_context(unsigned int cpu) } /* Queue a TLB invalidate and flush the I-cache if necessary. */ - if (!tlb_ops_need_broadcast()) - cpumask_set_cpu(cpu, &tlb_flush_pending); - else - cpumask_setall(&tlb_flush_pending); + cpumask_setall(&tlb_flush_pending); if (icache_is_vivt_asid_tagged()) __flush_icache_all(); @@ -245,8 +242,6 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk) if (cpumask_test_and_clear_cpu(cpu, &tlb_flush_pending)) { local_flush_bp_all(); local_flush_tlb_all(); - if (erratum_a15_798181()) - dummy_flush_tlb_a15_erratum(); } atomic64_set(&per_cpu(active_asids, cpu), asid); diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index dbddc07a3bbd..f5e1a8471714 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -455,7 +455,6 @@ static void __dma_remap(struct page *page, size_t size, pgprot_t prot) unsigned end = start + size; apply_to_page_range(&init_mm, start, size, __dma_update_pte, &prot); - dsb(); flush_tlb_kernel_range(start, end); } diff --git a/arch/arm/mm/hugetlbpage.c b/arch/arm/mm/hugetlbpage.c index 3d1e4a205b0b..66781bf34077 100644 --- a/arch/arm/mm/hugetlbpage.c +++ b/arch/arm/mm/hugetlbpage.c @@ -36,22 +36,6 @@ * of type casting from pmd_t * to pte_t *. */ -pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr) -{ - pgd_t *pgd; - pud_t *pud; - pmd_t *pmd = NULL; - - pgd = pgd_offset(mm, addr); - if (pgd_present(*pgd)) { - pud = pud_offset(pgd, addr); - if (pud_present(*pud)) - pmd = pmd_offset(pud, addr); - } - - return (pte_t *)pmd; -} - struct page *follow_huge_addr(struct mm_struct *mm, unsigned long address, int write) { @@ -68,33 +52,6 @@ int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep) return 0; } -pte_t *huge_pte_alloc(struct mm_struct *mm, - unsigned long addr, unsigned long sz) -{ - pgd_t *pgd; - pud_t *pud; - pte_t *pte = NULL; - - pgd = pgd_offset(mm, addr); - pud = pud_alloc(mm, pgd, addr); - if (pud) - pte = (pte_t *)pmd_alloc(mm, pud, addr); - - return pte; -} - -struct page * -follow_huge_pmd(struct mm_struct *mm, unsigned long address, - pmd_t *pmd, int write) -{ - struct page *page; - - page = pte_page(*(pte_t *)pmd); - if (page) - page += ((address & ~PMD_MASK) >> PAGE_SHIFT); - return page; -} - int pmd_huge(pmd_t pmd) { return pmd_val(pmd) && !(pmd_val(pmd) & PMD_TABLE_BIT); diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 15225d829d71..2958e74fc42c 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -231,7 +231,7 @@ static void __init arm_adjust_dma_zone(unsigned long *size, unsigned long *hole, } #endif -void __init setup_dma_zone(struct machine_desc *mdesc) +void __init setup_dma_zone(const struct machine_desc *mdesc) { #ifdef CONFIG_ZONE_DMA if (mdesc->dma_zone_size) { @@ -335,7 +335,8 @@ phys_addr_t __init arm_memblock_steal(phys_addr_t size, phys_addr_t align) return phys; } -void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc) +void __init arm_memblock_init(struct meminfo *mi, + const struct machine_desc *mdesc) { int i; diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 53cdbd39ec8e..b1d17eeb59b8 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -1186,7 +1186,7 @@ void __init arm_mm_memblock_reserve(void) * called function. This means you can't use any function or debugging * method which may touch any device, otherwise the kernel _will_ crash. */ -static void __init devicemaps_init(struct machine_desc *mdesc) +static void __init devicemaps_init(const struct machine_desc *mdesc) { struct map_desc map; unsigned long addr; @@ -1319,7 +1319,7 @@ static void __init map_lowmem(void) * paging_init() sets up the page tables, initialises the zone memory * maps, and sets up the zero page, bad page and bad page tables. */ -void __init paging_init(struct machine_desc *mdesc) +void __init paging_init(const struct machine_desc *mdesc) { void *zero_page; diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c index 1fa50100ab6a..34d4ab217bab 100644 --- a/arch/arm/mm/nommu.c +++ b/arch/arm/mm/nommu.c @@ -299,7 +299,7 @@ void __init sanity_check_meminfo(void) * paging_init() sets up the page tables, initialises the zone memory * maps, and sets up the zero page, bad page and bad page tables. */ -void __init paging_init(struct machine_desc *mdesc) +void __init paging_init(const struct machine_desc *mdesc) { early_trap_init((void *)CONFIG_VECTORS_BASE); mpu_setup(); diff --git a/arch/arm/mm/proc-feroceon.S b/arch/arm/mm/proc-feroceon.S index d5146b98c8d1..db79b62c92fb 100644 --- a/arch/arm/mm/proc-feroceon.S +++ b/arch/arm/mm/proc-feroceon.S @@ -514,6 +514,32 @@ ENTRY(cpu_feroceon_set_pte_ext) #endif mov pc, lr +/* Suspend/resume support: taken from arch/arm/mm/proc-arm926.S */ +.globl cpu_feroceon_suspend_size +.equ cpu_feroceon_suspend_size, 4 * 3 +#ifdef CONFIG_ARM_CPU_SUSPEND +ENTRY(cpu_feroceon_do_suspend) + stmfd sp!, {r4 - r6, lr} + mrc p15, 0, r4, c13, c0, 0 @ PID + mrc p15, 0, r5, c3, c0, 0 @ Domain ID + mrc p15, 0, r6, c1, c0, 0 @ Control register + stmia r0, {r4 - r6} + ldmfd sp!, {r4 - r6, pc} +ENDPROC(cpu_feroceon_do_suspend) + +ENTRY(cpu_feroceon_do_resume) + mov ip, #0 + mcr p15, 0, ip, c8, c7, 0 @ invalidate I+D TLBs + mcr p15, 0, ip, c7, c7, 0 @ invalidate I+D caches + ldmia r0, {r4 - r6} + mcr p15, 0, r4, c13, c0, 0 @ PID + mcr p15, 0, r5, c3, c0, 0 @ Domain ID + mcr p15, 0, r1, c2, c0, 0 @ TTB address + mov r0, r6 @ control register + b cpu_resume_mmu +ENDPROC(cpu_feroceon_do_resume) +#endif + .type __feroceon_setup, #function __feroceon_setup: mov r0, #0 diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S index 73398bcf9bd8..c63d9bdee51e 100644 --- a/arch/arm/mm/proc-v7.S +++ b/arch/arm/mm/proc-v7.S @@ -83,7 +83,7 @@ ENTRY(cpu_v7_dcache_clean_area) add r0, r0, r2 subs r1, r1, r2 bhi 2b - dsb + dsb ishst mov pc, lr ENDPROC(cpu_v7_dcache_clean_area) @@ -330,7 +330,19 @@ __v7_setup: 1: #endif -3: mov r10, #0 + /* Cortex-A15 Errata */ +3: ldr r10, =0x00000c0f @ Cortex-A15 primary part number + teq r0, r10 + bne 4f + +#ifdef CONFIG_ARM_ERRATA_773022 + cmp r6, #0x4 @ only present up to r0p4 + mrcle p15, 0, r10, c1, c0, 1 @ read aux control register + orrle r10, r10, #1 << 1 @ disable loop buffer + mcrle p15, 0, r10, c1, c0, 1 @ write aux control register +#endif + +4: mov r10, #0 mcr p15, 0, r10, c7, c5, 0 @ I+BTB cache invalidate dsb #ifdef CONFIG_MMU diff --git a/arch/arm/mm/tlb-v7.S b/arch/arm/mm/tlb-v7.S index ea94765acf9a..355308767bae 100644 --- a/arch/arm/mm/tlb-v7.S +++ b/arch/arm/mm/tlb-v7.S @@ -35,7 +35,7 @@ ENTRY(v7wbi_flush_user_tlb_range) vma_vm_mm r3, r2 @ get vma->vm_mm mmid r3, r3 @ get vm_mm->context.id - dsb + dsb ish mov r0, r0, lsr #PAGE_SHIFT @ align address mov r1, r1, lsr #PAGE_SHIFT asid r3, r3 @ mask ASID @@ -56,7 +56,7 @@ ENTRY(v7wbi_flush_user_tlb_range) add r0, r0, #PAGE_SZ cmp r0, r1 blo 1b - dsb + dsb ish mov pc, lr ENDPROC(v7wbi_flush_user_tlb_range) @@ -69,7 +69,7 @@ ENDPROC(v7wbi_flush_user_tlb_range) * - end - end address (exclusive, may not be aligned) */ ENTRY(v7wbi_flush_kern_tlb_range) - dsb + dsb ish mov r0, r0, lsr #PAGE_SHIFT @ align address mov r1, r1, lsr #PAGE_SHIFT mov r0, r0, lsl #PAGE_SHIFT @@ -84,7 +84,7 @@ ENTRY(v7wbi_flush_kern_tlb_range) add r0, r0, #PAGE_SZ cmp r0, r1 blo 1b - dsb + dsb ish isb mov pc, lr ENDPROC(v7wbi_flush_kern_tlb_range) diff --git a/arch/arm/vfp/vfphw.S b/arch/arm/vfp/vfphw.S index 8d10dc8a1e17..3e5d3115a2a6 100644 --- a/arch/arm/vfp/vfphw.S +++ b/arch/arm/vfp/vfphw.S @@ -78,6 +78,11 @@ ENTRY(vfp_support_entry) DBGSTR3 "instr %08x pc %08x state %p", r0, r2, r10 + ldr r3, [sp, #S_PSR] @ Neither lazy restore nor FP exceptions + and r3, r3, #MODE_MASK @ are supported in kernel mode + teq r3, #USR_MODE + bne vfp_kmode_exception @ Returns through lr + VFPFMRX r1, FPEXC @ Is the VFP enabled? DBGSTR1 "fpexc %08x", r1 tst r1, #FPEXC_EN diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c index 5dfbb0b8e7f4..52b8f40b1c73 100644 --- a/arch/arm/vfp/vfpmodule.c +++ b/arch/arm/vfp/vfpmodule.c @@ -20,6 +20,7 @@ #include <linux/init.h> #include <linux/uaccess.h> #include <linux/user.h> +#include <linux/export.h> #include <asm/cp15.h> #include <asm/cputype.h> @@ -648,6 +649,72 @@ static int vfp_hotplug(struct notifier_block *b, unsigned long action, return NOTIFY_OK; } +void vfp_kmode_exception(void) +{ + /* + * If we reach this point, a floating point exception has been raised + * while running in kernel mode. If the NEON/VFP unit was enabled at the + * time, it means a VFP instruction has been issued that requires + * software assistance to complete, something which is not currently + * supported in kernel mode. + * If the NEON/VFP unit was disabled, and the location pointed to below + * is properly preceded by a call to kernel_neon_begin(), something has + * caused the task to be scheduled out and back in again. In this case, + * rebuilding and running with CONFIG_DEBUG_ATOMIC_SLEEP enabled should + * be helpful in localizing the problem. + */ + if (fmrx(FPEXC) & FPEXC_EN) + pr_crit("BUG: unsupported FP instruction in kernel mode\n"); + else + pr_crit("BUG: FP instruction issued in kernel mode with FP unit disabled\n"); +} + +#ifdef CONFIG_KERNEL_MODE_NEON + +/* + * Kernel-side NEON support functions + */ +void kernel_neon_begin(void) +{ + struct thread_info *thread = current_thread_info(); + unsigned int cpu; + u32 fpexc; + + /* + * Kernel mode NEON is only allowed outside of interrupt context + * with preemption disabled. This will make sure that the kernel + * mode NEON register contents never need to be preserved. + */ + BUG_ON(in_interrupt()); + cpu = get_cpu(); + + fpexc = fmrx(FPEXC) | FPEXC_EN; + fmxr(FPEXC, fpexc); + + /* + * Save the userland NEON/VFP state. Under UP, + * the owner could be a task other than 'current' + */ + if (vfp_state_in_hw(cpu, thread)) + vfp_save_state(&thread->vfpstate, fpexc); +#ifndef CONFIG_SMP + else if (vfp_current_hw_state[cpu] != NULL) + vfp_save_state(vfp_current_hw_state[cpu], fpexc); +#endif + vfp_current_hw_state[cpu] = NULL; +} +EXPORT_SYMBOL(kernel_neon_begin); + +void kernel_neon_end(void) +{ + /* Disable the NEON/VFP unit. */ + fmxr(FPEXC, fmrx(FPEXC) & ~FPEXC_EN); + put_cpu(); +} +EXPORT_SYMBOL(kernel_neon_end); + +#endif /* CONFIG_KERNEL_MODE_NEON */ + /* * VFP support code initialisation. */ @@ -731,4 +798,4 @@ static int __init vfp_init(void) return 0; } -late_initcall(vfp_init); +core_initcall(vfp_init); |