From 881ea7d3f55bf7b8834c81d86c4dcb3d5f786f15 Mon Sep 17 00:00:00 2001 From: chenhui zhao Date: Thu, 23 Jul 2015 11:55:45 +0800 Subject: powerpc/corenet: use the mixed mode of MPIC when enabling CPU hotplug Core reset may cause issue if using the proxy mode of MPIC. Use the mixed mode of MPIC if enabling CPU hotplug. Signed-off-by: Chenhui Zhao Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/corenet_generic.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c index b39557120cbb..99412b32586d 100644 --- a/arch/powerpc/platforms/85xx/corenet_generic.c +++ b/arch/powerpc/platforms/85xx/corenet_generic.c @@ -214,7 +214,15 @@ define_machine(corenet_generic) { .pcibios_fixup_bus = fsl_pcibios_fixup_bus, .pcibios_fixup_phb = fsl_pcibios_fixup_phb, #endif +/* + * Core reset may cause issue if using the proxy mode of MPIC. + * So, use the mixed mode of MPIC if enabling CPU hotplug. + */ +#ifdef CONFIG_HOTPLUG_CPU + .get_irq = mpic_get_irq, +#else .get_irq = mpic_get_coreint_irq, +#endif .restart = fsl_rstcr_restart, .calibrate_decr = generic_calibrate_decr, .progress = udbg_progress, -- cgit v1.2.3 From c383ee84e1d575b09d167185d15df24bde25eb15 Mon Sep 17 00:00:00 2001 From: Andy Fleming Date: Wed, 2 Sep 2015 13:07:58 -0500 Subject: powerpc/85xx: Add support for Varisys Cyrus board This board uses a P5020 chip, and boots just fine using the corenet_generic code. The device tree is very similar to the P5020DS, except that there is no Flash memory. The environment is, instead, stored on an MMC card on the motherboard. Signed-off-by: Andy Fleming [scottwood: fixed trailing whitespace] Signed-off-by: Scott Wood --- arch/powerpc/boot/dts/cyrus_p5020.dts | 155 ++++++++++++++++++++++++++ arch/powerpc/platforms/85xx/corenet_generic.c | 1 + 2 files changed, 156 insertions(+) create mode 100644 arch/powerpc/boot/dts/cyrus_p5020.dts (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/boot/dts/cyrus_p5020.dts b/arch/powerpc/boot/dts/cyrus_p5020.dts new file mode 100644 index 000000000000..76e1fdf9d3b8 --- /dev/null +++ b/arch/powerpc/boot/dts/cyrus_p5020.dts @@ -0,0 +1,155 @@ +/* + * Cyrus 5020 Device Tree Source, based on p5020ds.dts + * + * Copyright 2015 Andy Fleming + * + * p5020ds.dts copyright: + * Copyright 2010 - 2014 Freescale Semiconductor Inc. + * + * 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/ "fsl/p5020si-pre.dtsi" + +/ { + model = "varisys,CYRUS"; + compatible = "varisys,CYRUS"; + #address-cells = <2>; + #size-cells = <2>; + interrupt-parent = <&mpic>; + + memory { + device_type = "memory"; + }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + bman_fbpr: bman-fbpr { + size = <0 0x1000000>; + alignment = <0 0x1000000>; + }; + qman_fqd: qman-fqd { + size = <0 0x400000>; + alignment = <0 0x400000>; + }; + qman_pfdr: qman-pfdr { + size = <0 0x2000000>; + alignment = <0 0x2000000>; + }; + }; + + dcsr: dcsr@f00000000 { + ranges = <0x00000000 0xf 0x00000000 0x01008000>; + }; + + bportals: bman-portals@ff4000000 { + ranges = <0x0 0xf 0xf4000000 0x200000>; + }; + + qportals: qman-portals@ff4200000 { + ranges = <0x0 0xf 0xf4200000 0x200000>; + }; + + soc: soc@ffe000000 { + ranges = <0x00000000 0xf 0xfe000000 0x1000000>; + reg = <0xf 0xfe000000 0 0x00001000>; + spi@110000 { + }; + + i2c@118100 { + }; + + i2c@119100 { + rtc@6f { + compatible = "microchip,mcp7941x"; + reg = <0x6f>; + }; + }; + }; + + rio: rapidio@ffe0c0000 { + reg = <0xf 0xfe0c0000 0 0x11000>; + + port1 { + ranges = <0 0 0xc 0x20000000 0 0x10000000>; + }; + port2 { + ranges = <0 0 0xc 0x30000000 0 0x10000000>; + }; + }; + + lbc: localbus@ffe124000 { + reg = <0xf 0xfe124000 0 0x1000>; + ranges = <0 0 0xf 0xe8000000 0x08000000 + 2 0 0xf 0xffa00000 0x00040000 + 3 0 0xf 0xffdf0000 0x00008000>; + }; + + pci0: pcie@ffe200000 { + reg = <0xf 0xfe200000 0 0x1000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x00000000 0x0 0x20000000 + 0x01000000 0 0x00000000 0xf 0xf8000000 0x0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x20000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci1: pcie@ffe201000 { + reg = <0xf 0xfe201000 0 0x1000>; + ranges = <0x02000000 0x0 0xe0000000 0xc 0x20000000 0x0 0x20000000 + 0x01000000 0x0 0x00000000 0xf 0xf8010000 0x0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x20000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci2: pcie@ffe202000 { + reg = <0xf 0xfe202000 0 0x1000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x40000000 0 0x20000000 + 0x01000000 0 0x00000000 0xf 0xf8020000 0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x20000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; + + pci3: pcie@ffe203000 { + reg = <0xf 0xfe203000 0 0x1000>; + ranges = <0x02000000 0 0xe0000000 0xc 0x60000000 0 0x20000000 + 0x01000000 0 0x00000000 0xf 0xf8030000 0 0x00010000>; + pcie@0 { + ranges = <0x02000000 0 0xe0000000 + 0x02000000 0 0xe0000000 + 0 0x20000000 + + 0x01000000 0 0x00000000 + 0x01000000 0 0x00000000 + 0 0x00010000>; + }; + }; +}; + +/include/ "fsl/p5020si-post.dtsi" diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c index 99412b32586d..3a8be47c0e3a 100644 --- a/arch/powerpc/platforms/85xx/corenet_generic.c +++ b/arch/powerpc/platforms/85xx/corenet_generic.c @@ -161,6 +161,7 @@ static const char * const boards[] __initconst = { "fsl,T1042RDB", "fsl,T1042RDB_PI", "keymile,kmcoge4", + "varisys,CYRUS", NULL }; -- cgit v1.2.3 From 01c593d749f4764a87abd8efa397976f2adb8f49 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 6 Oct 2015 22:48:05 -0500 Subject: powerpc/fsl-booke-64: Allow booting from the secondary thread This allows SMP kernels to work as kdump crash kernels. While crash kernels don't really need to be SMP, this prevents things from breaking if a user does it anyway (which is not something you want to only find out once the main kernel has crashed in the field, especially if whether it works or not depends on which cpu crashed). Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/smp.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index b8b821697910..c2ded034ef53 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -173,15 +173,22 @@ static inline u32 read_spin_table_addr_l(void *spin_table) static void wake_hw_thread(void *info) { void fsl_secondary_thread_init(void); - unsigned long imsr1, inia1; + unsigned long imsr, inia; int nr = *(const int *)info; - imsr1 = MSR_KERNEL; - inia1 = *(unsigned long *)fsl_secondary_thread_init; - - mttmr(TMRN_IMSR1, imsr1); - mttmr(TMRN_INIA1, inia1); - mtspr(SPRN_TENS, TEN_THREAD(1)); + imsr = MSR_KERNEL; + inia = *(unsigned long *)fsl_secondary_thread_init; + + if (cpu_thread_in_core(nr) == 0) { + /* For when we boot on a secondary thread with kdump */ + mttmr(TMRN_IMSR0, imsr); + mttmr(TMRN_INIA0, inia); + mtspr(SPRN_TENS, TEN_THREAD(0)); + } else { + mttmr(TMRN_IMSR1, imsr); + mttmr(TMRN_INIA1, inia); + mtspr(SPRN_TENS, TEN_THREAD(1)); + } smp_generic_kick_cpu(nr); } @@ -224,6 +231,12 @@ static int smp_85xx_kick_cpu(int nr) smp_call_function_single(primary, wake_hw_thread, &nr, 0); return 0; + } else if (cpu_thread_in_core(boot_cpuid) != 0 && + cpu_first_thread_sibling(boot_cpuid) == nr) { + if (WARN_ON_ONCE(!cpu_has_feature(CPU_FTR_SMT))) + return -ENOENT; + + smp_call_function_single(boot_cpuid, wake_hw_thread, &nr, 0); } #endif -- cgit v1.2.3 From 9f640bf5321dff6af69016d8fe753efa6b2f3e72 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 6 Oct 2015 22:48:06 -0500 Subject: powerpc/fsl-corenet: Disable coreint if kexec is enabled Problems have been observed in coreint (EPR) mode if interrupts are left pending (due to the lack of device quiescence with kdump) after having tried to deliver to a CPU but unable to deliver due to MSR[EE] -- interrupts no longer get reliably delivered in the new kernel. I tried various ways of fixing it up inside the crash kernel itself, and none worked (including resetting the entire mpic). Masking all interrupts and issuing EOIs in the crashing kernel did help a lot of the time, but the behavior was not consistent. Thus, stick to standard IACK mode when kdump is a possibility. Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/corenet_generic.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/corenet_generic.c b/arch/powerpc/platforms/85xx/corenet_generic.c index 3a8be47c0e3a..46d05c94add6 100644 --- a/arch/powerpc/platforms/85xx/corenet_generic.c +++ b/arch/powerpc/platforms/85xx/corenet_generic.c @@ -216,10 +216,12 @@ define_machine(corenet_generic) { .pcibios_fixup_phb = fsl_pcibios_fixup_phb, #endif /* - * Core reset may cause issue if using the proxy mode of MPIC. + * Core reset may cause issues if using the proxy mode of MPIC. * So, use the mixed mode of MPIC if enabling CPU hotplug. + * + * Likewise, problems have been seen with kexec when coreint is enabled. */ -#ifdef CONFIG_HOTPLUG_CPU +#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_KEXEC) .get_irq = mpic_get_irq, #else .get_irq = mpic_get_coreint_irq, -- cgit v1.2.3 From 1112450a18dfcc26dd18000e20bf06bda27f2bad Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 6 Oct 2015 22:48:07 -0500 Subject: powerpc/85xx: Don't use generic timebase sync on 64-bit 85xx currently uses the generic timebase sync mechanism when CONFIG_KEXEC is enabled, because 32-bit 85xx kexec support does a hard reset of each core. 64-bit 85xx kexec does not do this, so we neither need nor want this (nor is the generic timebase sync code built on ppc64). FWIW, I don't like the fact that the hard reset is done on 32-bit kexec, and I especially don't like the timebase sync being triggered only on the presence of CONFIG_KEXEC rather than actually booting in that environment, but that's beyond the scope of this patch... Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index c2ded034ef53..a0763be7259e 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -344,7 +344,7 @@ struct smp_ops_t smp_85xx_ops = { .cpu_disable = generic_cpu_disable, .cpu_die = generic_cpu_die, #endif -#ifdef CONFIG_KEXEC +#if defined(CONFIG_KEXEC) && !defined(CONFIG_PPC64) .give_timebase = smp_generic_give_timebase, .take_timebase = smp_generic_take_timebase, #endif -- cgit v1.2.3 From 948486544713492f00ac8a9572909101ea892cb0 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Sat, 19 Sep 2015 23:29:53 -0500 Subject: powerpc/fsl: Move fsl_guts.h out of arch/powerpc Freescale's Layerscape ARM chips use the same structure. Signed-off-by: Scott Wood --- arch/powerpc/include/asm/fsl_guts.h | 192 ----------------------------- arch/powerpc/platforms/85xx/mpc85xx_mds.c | 2 +- arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 2 +- arch/powerpc/platforms/85xx/p1022_ds.c | 2 +- arch/powerpc/platforms/85xx/p1022_rdk.c | 2 +- arch/powerpc/platforms/85xx/smp.c | 2 +- arch/powerpc/platforms/85xx/twr_p102x.c | 2 +- arch/powerpc/platforms/86xx/mpc8610_hpcd.c | 2 +- drivers/iommu/fsl_pamu.c | 2 +- include/linux/fsl/guts.h | 192 +++++++++++++++++++++++++++++ sound/soc/fsl/mpc8610_hpcd.c | 2 +- sound/soc/fsl/p1022_ds.c | 2 +- sound/soc/fsl/p1022_rdk.c | 2 +- 13 files changed, 203 insertions(+), 203 deletions(-) delete mode 100644 arch/powerpc/include/asm/fsl_guts.h create mode 100644 include/linux/fsl/guts.h (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/include/asm/fsl_guts.h b/arch/powerpc/include/asm/fsl_guts.h deleted file mode 100644 index 43b6bb1a4a9c..000000000000 --- a/arch/powerpc/include/asm/fsl_guts.h +++ /dev/null @@ -1,192 +0,0 @@ -/** - * Freecale 85xx and 86xx Global Utilties register set - * - * Authors: Jeff Brown - * Timur Tabi - * - * Copyright 2004,2007,2012 Freescale Semiconductor, Inc - * - * 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. - */ - -#ifndef __ASM_POWERPC_FSL_GUTS_H__ -#define __ASM_POWERPC_FSL_GUTS_H__ -#ifdef __KERNEL__ - -/** - * Global Utility Registers. - * - * Not all registers defined in this structure are available on all chips, so - * you are expected to know whether a given register actually exists on your - * chip before you access it. - * - * Also, some registers are similar on different chips but have slightly - * different names. In these cases, one name is chosen to avoid extraneous - * #ifdefs. - */ -struct ccsr_guts { - __be32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */ - __be32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */ - __be32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and Control Register */ - __be32 pordevsr; /* 0x.000c - POR I/O Device Status Register */ - __be32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */ - __be32 pordevsr2; /* 0x.0014 - POR device status register 2 */ - u8 res018[0x20 - 0x18]; - __be32 porcir; /* 0x.0020 - POR Configuration Information Register */ - u8 res024[0x30 - 0x24]; - __be32 gpiocr; /* 0x.0030 - GPIO Control Register */ - u8 res034[0x40 - 0x34]; - __be32 gpoutdr; /* 0x.0040 - General-Purpose Output Data Register */ - u8 res044[0x50 - 0x44]; - __be32 gpindr; /* 0x.0050 - General-Purpose Input Data Register */ - u8 res054[0x60 - 0x54]; - __be32 pmuxcr; /* 0x.0060 - Alternate Function Signal Multiplex Control */ - __be32 pmuxcr2; /* 0x.0064 - Alternate function signal multiplex control 2 */ - __be32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */ - u8 res06c[0x70 - 0x6c]; - __be32 devdisr; /* 0x.0070 - Device Disable Control */ -#define CCSR_GUTS_DEVDISR_TB1 0x00001000 -#define CCSR_GUTS_DEVDISR_TB0 0x00004000 - __be32 devdisr2; /* 0x.0074 - Device Disable Control 2 */ - u8 res078[0x7c - 0x78]; - __be32 pmjcr; /* 0x.007c - 4 Power Management Jog Control Register */ - __be32 powmgtcsr; /* 0x.0080 - Power Management Status and Control Register */ - __be32 pmrccr; /* 0x.0084 - Power Management Reset Counter Configuration Register */ - __be32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter Configuration Register */ - __be32 pmcdr; /* 0x.008c - 4Power management clock disable register */ - __be32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */ - __be32 rstrscr; /* 0x.0094 - Reset Request Status and Control Register */ - __be32 ectrstcr; /* 0x.0098 - Exception reset control register */ - __be32 autorstsr; /* 0x.009c - Automatic reset status register */ - __be32 pvr; /* 0x.00a0 - Processor Version Register */ - __be32 svr; /* 0x.00a4 - System Version Register */ - u8 res0a8[0xb0 - 0xa8]; - __be32 rstcr; /* 0x.00b0 - Reset Control Register */ - u8 res0b4[0xc0 - 0xb4]; - __be32 iovselsr; /* 0x.00c0 - I/O voltage select status register - Called 'elbcvselcr' on 86xx SOCs */ - u8 res0c4[0x100 - 0xc4]; - __be32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers - There are 16 registers */ - u8 res140[0x224 - 0x140]; - __be32 iodelay1; /* 0x.0224 - IO delay control register 1 */ - __be32 iodelay2; /* 0x.0228 - IO delay control register 2 */ - u8 res22c[0x604 - 0x22c]; - __be32 pamubypenr; /* 0x.604 - PAMU bypass enable register */ - u8 res608[0x800 - 0x608]; - __be32 clkdvdr; /* 0x.0800 - Clock Divide Register */ - u8 res804[0x900 - 0x804]; - __be32 ircr; /* 0x.0900 - Infrared Control Register */ - u8 res904[0x908 - 0x904]; - __be32 dmacr; /* 0x.0908 - DMA Control Register */ - u8 res90c[0x914 - 0x90c]; - __be32 elbccr; /* 0x.0914 - eLBC Control Register */ - u8 res918[0xb20 - 0x918]; - __be32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */ - __be32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */ - __be32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */ - u8 resb2c[0xe00 - 0xb2c]; - __be32 clkocr; /* 0x.0e00 - Clock Out Select Register */ - u8 rese04[0xe10 - 0xe04]; - __be32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */ - u8 rese14[0xe20 - 0xe14]; - __be32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */ - __be32 cpfor; /* 0x.0e24 - L2 charge pump fuse override register */ - u8 rese28[0xf04 - 0xe28]; - __be32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */ - __be32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */ - u8 resf0c[0xf2c - 0xf0c]; - __be32 itcr; /* 0x.0f2c - Internal transaction control register */ - u8 resf30[0xf40 - 0xf30]; - __be32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */ - __be32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */ -} __attribute__ ((packed)); - - -/* Alternate function signal multiplex control */ -#define MPC85xx_PMUXCR_QE(x) (0x8000 >> (x)) - -#ifdef CONFIG_PPC_86xx - -#define CCSR_GUTS_DMACR_DEV_SSI 0 /* DMA controller/channel set to SSI */ -#define CCSR_GUTS_DMACR_DEV_IR 1 /* DMA controller/channel set to IR */ - -/* - * Set the DMACR register in the GUTS - * - * The DMACR register determines the source of initiated transfers for each - * channel on each DMA controller. Rather than have a bunch of repetitive - * macros for the bit patterns, we just have a function that calculates - * them. - * - * guts: Pointer to GUTS structure - * co: The DMA controller (0 or 1) - * ch: The channel on the DMA controller (0, 1, 2, or 3) - * device: The device to set as the source (CCSR_GUTS_DMACR_DEV_xx) - */ -static inline void guts_set_dmacr(struct ccsr_guts __iomem *guts, - unsigned int co, unsigned int ch, unsigned int device) -{ - unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch)); - - clrsetbits_be32(&guts->dmacr, 3 << shift, device << shift); -} - -#define CCSR_GUTS_PMUXCR_LDPSEL 0x00010000 -#define CCSR_GUTS_PMUXCR_SSI1_MASK 0x0000C000 /* Bitmask for SSI1 */ -#define CCSR_GUTS_PMUXCR_SSI1_LA 0x00000000 /* Latched address */ -#define CCSR_GUTS_PMUXCR_SSI1_HI 0x00004000 /* High impedance */ -#define CCSR_GUTS_PMUXCR_SSI1_SSI 0x00008000 /* Used for SSI1 */ -#define CCSR_GUTS_PMUXCR_SSI2_MASK 0x00003000 /* Bitmask for SSI2 */ -#define CCSR_GUTS_PMUXCR_SSI2_LA 0x00000000 /* Latched address */ -#define CCSR_GUTS_PMUXCR_SSI2_HI 0x00001000 /* High impedance */ -#define CCSR_GUTS_PMUXCR_SSI2_SSI 0x00002000 /* Used for SSI2 */ -#define CCSR_GUTS_PMUXCR_LA_22_25_LA 0x00000000 /* Latched Address */ -#define CCSR_GUTS_PMUXCR_LA_22_25_HI 0x00000400 /* High impedance */ -#define CCSR_GUTS_PMUXCR_DBGDRV 0x00000200 /* Signals not driven */ -#define CCSR_GUTS_PMUXCR_DMA2_0 0x00000008 -#define CCSR_GUTS_PMUXCR_DMA2_3 0x00000004 -#define CCSR_GUTS_PMUXCR_DMA1_0 0x00000002 -#define CCSR_GUTS_PMUXCR_DMA1_3 0x00000001 - -/* - * Set the DMA external control bits in the GUTS - * - * The DMA external control bits in the PMUXCR are only meaningful for - * channels 0 and 3. Any other channels are ignored. - * - * guts: Pointer to GUTS structure - * co: The DMA controller (0 or 1) - * ch: The channel on the DMA controller (0, 1, 2, or 3) - * value: the new value for the bit (0 or 1) - */ -static inline void guts_set_pmuxcr_dma(struct ccsr_guts __iomem *guts, - unsigned int co, unsigned int ch, unsigned int value) -{ - if ((ch == 0) || (ch == 3)) { - unsigned int shift = 2 * (co + 1) - (ch & 1) - 1; - - clrsetbits_be32(&guts->pmuxcr, 1 << shift, value << shift); - } -} - -#define CCSR_GUTS_CLKDVDR_PXCKEN 0x80000000 -#define CCSR_GUTS_CLKDVDR_SSICKEN 0x20000000 -#define CCSR_GUTS_CLKDVDR_PXCKINV 0x10000000 -#define CCSR_GUTS_CLKDVDR_PXCKDLY_SHIFT 25 -#define CCSR_GUTS_CLKDVDR_PXCKDLY_MASK 0x06000000 -#define CCSR_GUTS_CLKDVDR_PXCKDLY(x) \ - (((x) & 3) << CCSR_GUTS_CLKDVDR_PXCKDLY_SHIFT) -#define CCSR_GUTS_CLKDVDR_PXCLK_SHIFT 16 -#define CCSR_GUTS_CLKDVDR_PXCLK_MASK 0x001F0000 -#define CCSR_GUTS_CLKDVDR_PXCLK(x) (((x) & 31) << CCSR_GUTS_CLKDVDR_PXCLK_SHIFT) -#define CCSR_GUTS_CLKDVDR_SSICLK_MASK 0x000000FF -#define CCSR_GUTS_CLKDVDR_SSICLK(x) ((x) & CCSR_GUTS_CLKDVDR_SSICLK_MASK) - -#endif - -#endif -#endif diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c index a392e94a07fa..f0be439ceaaa 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c @@ -34,6 +34,7 @@ #include #include #include +#include #include #include @@ -51,7 +52,6 @@ #include #include #include -#include #include "smp.h" #include "mpc85xx.h" diff --git a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c index e358bed66d01..50dcc00a0f5a 100644 --- a/arch/powerpc/platforms/85xx/mpc85xx_rdb.c +++ b/arch/powerpc/platforms/85xx/mpc85xx_rdb.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -27,7 +28,6 @@ #include #include #include -#include #include #include diff --git a/arch/powerpc/platforms/85xx/p1022_ds.c b/arch/powerpc/platforms/85xx/p1022_ds.c index 6ac986d3f8a3..371df822e88e 100644 --- a/arch/powerpc/platforms/85xx/p1022_ds.c +++ b/arch/powerpc/platforms/85xx/p1022_ds.c @@ -16,6 +16,7 @@ * kind, whether express or implied. */ +#include #include #include #include @@ -25,7 +26,6 @@ #include #include #include -#include #include #include "smp.h" diff --git a/arch/powerpc/platforms/85xx/p1022_rdk.c b/arch/powerpc/platforms/85xx/p1022_rdk.c index 680232d6ba48..5087becaa8bc 100644 --- a/arch/powerpc/platforms/85xx/p1022_rdk.c +++ b/arch/powerpc/platforms/85xx/p1022_rdk.c @@ -12,6 +12,7 @@ * kind, whether express or implied. */ +#include #include #include #include @@ -21,7 +22,6 @@ #include #include #include -#include #include "smp.h" #include "mpc85xx.h" diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index b8b821697910..6ac7786e076a 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -26,7 +27,6 @@ #include #include #include -#include #include #include diff --git a/arch/powerpc/platforms/85xx/twr_p102x.c b/arch/powerpc/platforms/85xx/twr_p102x.c index 30e002f4648c..892e613519cc 100644 --- a/arch/powerpc/platforms/85xx/twr_p102x.c +++ b/arch/powerpc/platforms/85xx/twr_p102x.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include @@ -23,7 +24,6 @@ #include #include #include -#include #include #include diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c index 55413a547ea8..437a9c372ae1 100644 --- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c +++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include @@ -38,7 +39,6 @@ #include #include #include -#include #include "mpc86xx.h" diff --git a/drivers/iommu/fsl_pamu.c b/drivers/iommu/fsl_pamu.c index 2570f2a25dc4..a34355fca37a 100644 --- a/drivers/iommu/fsl_pamu.c +++ b/drivers/iommu/fsl_pamu.c @@ -20,11 +20,11 @@ #include "fsl_pamu.h" +#include #include #include #include -#include /* define indexes for each operation mapping scenario */ #define OMI_QMAN 0x00 diff --git a/include/linux/fsl/guts.h b/include/linux/fsl/guts.h new file mode 100644 index 000000000000..84d971ff3fba --- /dev/null +++ b/include/linux/fsl/guts.h @@ -0,0 +1,192 @@ +/** + * Freecale 85xx and 86xx Global Utilties register set + * + * Authors: Jeff Brown + * Timur Tabi + * + * Copyright 2004,2007,2012 Freescale Semiconductor, Inc + * + * 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. + */ + +#ifndef __FSL_GUTS_H__ +#define __FSL_GUTS_H__ + +#include + +/** + * Global Utility Registers. + * + * Not all registers defined in this structure are available on all chips, so + * you are expected to know whether a given register actually exists on your + * chip before you access it. + * + * Also, some registers are similar on different chips but have slightly + * different names. In these cases, one name is chosen to avoid extraneous + * #ifdefs. + */ +struct ccsr_guts { + __be32 porpllsr; /* 0x.0000 - POR PLL Ratio Status Register */ + __be32 porbmsr; /* 0x.0004 - POR Boot Mode Status Register */ + __be32 porimpscr; /* 0x.0008 - POR I/O Impedance Status and Control Register */ + __be32 pordevsr; /* 0x.000c - POR I/O Device Status Register */ + __be32 pordbgmsr; /* 0x.0010 - POR Debug Mode Status Register */ + __be32 pordevsr2; /* 0x.0014 - POR device status register 2 */ + u8 res018[0x20 - 0x18]; + __be32 porcir; /* 0x.0020 - POR Configuration Information Register */ + u8 res024[0x30 - 0x24]; + __be32 gpiocr; /* 0x.0030 - GPIO Control Register */ + u8 res034[0x40 - 0x34]; + __be32 gpoutdr; /* 0x.0040 - General-Purpose Output Data Register */ + u8 res044[0x50 - 0x44]; + __be32 gpindr; /* 0x.0050 - General-Purpose Input Data Register */ + u8 res054[0x60 - 0x54]; + __be32 pmuxcr; /* 0x.0060 - Alternate Function Signal Multiplex Control */ + __be32 pmuxcr2; /* 0x.0064 - Alternate function signal multiplex control 2 */ + __be32 dmuxcr; /* 0x.0068 - DMA Mux Control Register */ + u8 res06c[0x70 - 0x6c]; + __be32 devdisr; /* 0x.0070 - Device Disable Control */ +#define CCSR_GUTS_DEVDISR_TB1 0x00001000 +#define CCSR_GUTS_DEVDISR_TB0 0x00004000 + __be32 devdisr2; /* 0x.0074 - Device Disable Control 2 */ + u8 res078[0x7c - 0x78]; + __be32 pmjcr; /* 0x.007c - 4 Power Management Jog Control Register */ + __be32 powmgtcsr; /* 0x.0080 - Power Management Status and Control Register */ + __be32 pmrccr; /* 0x.0084 - Power Management Reset Counter Configuration Register */ + __be32 pmpdccr; /* 0x.0088 - Power Management Power Down Counter Configuration Register */ + __be32 pmcdr; /* 0x.008c - 4Power management clock disable register */ + __be32 mcpsumr; /* 0x.0090 - Machine Check Summary Register */ + __be32 rstrscr; /* 0x.0094 - Reset Request Status and Control Register */ + __be32 ectrstcr; /* 0x.0098 - Exception reset control register */ + __be32 autorstsr; /* 0x.009c - Automatic reset status register */ + __be32 pvr; /* 0x.00a0 - Processor Version Register */ + __be32 svr; /* 0x.00a4 - System Version Register */ + u8 res0a8[0xb0 - 0xa8]; + __be32 rstcr; /* 0x.00b0 - Reset Control Register */ + u8 res0b4[0xc0 - 0xb4]; + __be32 iovselsr; /* 0x.00c0 - I/O voltage select status register + Called 'elbcvselcr' on 86xx SOCs */ + u8 res0c4[0x100 - 0xc4]; + __be32 rcwsr[16]; /* 0x.0100 - Reset Control Word Status registers + There are 16 registers */ + u8 res140[0x224 - 0x140]; + __be32 iodelay1; /* 0x.0224 - IO delay control register 1 */ + __be32 iodelay2; /* 0x.0228 - IO delay control register 2 */ + u8 res22c[0x604 - 0x22c]; + __be32 pamubypenr; /* 0x.604 - PAMU bypass enable register */ + u8 res608[0x800 - 0x608]; + __be32 clkdvdr; /* 0x.0800 - Clock Divide Register */ + u8 res804[0x900 - 0x804]; + __be32 ircr; /* 0x.0900 - Infrared Control Register */ + u8 res904[0x908 - 0x904]; + __be32 dmacr; /* 0x.0908 - DMA Control Register */ + u8 res90c[0x914 - 0x90c]; + __be32 elbccr; /* 0x.0914 - eLBC Control Register */ + u8 res918[0xb20 - 0x918]; + __be32 ddr1clkdr; /* 0x.0b20 - DDR1 Clock Disable Register */ + __be32 ddr2clkdr; /* 0x.0b24 - DDR2 Clock Disable Register */ + __be32 ddrclkdr; /* 0x.0b28 - DDR Clock Disable Register */ + u8 resb2c[0xe00 - 0xb2c]; + __be32 clkocr; /* 0x.0e00 - Clock Out Select Register */ + u8 rese04[0xe10 - 0xe04]; + __be32 ddrdllcr; /* 0x.0e10 - DDR DLL Control Register */ + u8 rese14[0xe20 - 0xe14]; + __be32 lbcdllcr; /* 0x.0e20 - LBC DLL Control Register */ + __be32 cpfor; /* 0x.0e24 - L2 charge pump fuse override register */ + u8 rese28[0xf04 - 0xe28]; + __be32 srds1cr0; /* 0x.0f04 - SerDes1 Control Register 0 */ + __be32 srds1cr1; /* 0x.0f08 - SerDes1 Control Register 0 */ + u8 resf0c[0xf2c - 0xf0c]; + __be32 itcr; /* 0x.0f2c - Internal transaction control register */ + u8 resf30[0xf40 - 0xf30]; + __be32 srds2cr0; /* 0x.0f40 - SerDes2 Control Register 0 */ + __be32 srds2cr1; /* 0x.0f44 - SerDes2 Control Register 0 */ +} __attribute__ ((packed)); + + +/* Alternate function signal multiplex control */ +#define MPC85xx_PMUXCR_QE(x) (0x8000 >> (x)) + +#ifdef CONFIG_PPC_86xx + +#define CCSR_GUTS_DMACR_DEV_SSI 0 /* DMA controller/channel set to SSI */ +#define CCSR_GUTS_DMACR_DEV_IR 1 /* DMA controller/channel set to IR */ + +/* + * Set the DMACR register in the GUTS + * + * The DMACR register determines the source of initiated transfers for each + * channel on each DMA controller. Rather than have a bunch of repetitive + * macros for the bit patterns, we just have a function that calculates + * them. + * + * guts: Pointer to GUTS structure + * co: The DMA controller (0 or 1) + * ch: The channel on the DMA controller (0, 1, 2, or 3) + * device: The device to set as the source (CCSR_GUTS_DMACR_DEV_xx) + */ +static inline void guts_set_dmacr(struct ccsr_guts __iomem *guts, + unsigned int co, unsigned int ch, unsigned int device) +{ + unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch)); + + clrsetbits_be32(&guts->dmacr, 3 << shift, device << shift); +} + +#define CCSR_GUTS_PMUXCR_LDPSEL 0x00010000 +#define CCSR_GUTS_PMUXCR_SSI1_MASK 0x0000C000 /* Bitmask for SSI1 */ +#define CCSR_GUTS_PMUXCR_SSI1_LA 0x00000000 /* Latched address */ +#define CCSR_GUTS_PMUXCR_SSI1_HI 0x00004000 /* High impedance */ +#define CCSR_GUTS_PMUXCR_SSI1_SSI 0x00008000 /* Used for SSI1 */ +#define CCSR_GUTS_PMUXCR_SSI2_MASK 0x00003000 /* Bitmask for SSI2 */ +#define CCSR_GUTS_PMUXCR_SSI2_LA 0x00000000 /* Latched address */ +#define CCSR_GUTS_PMUXCR_SSI2_HI 0x00001000 /* High impedance */ +#define CCSR_GUTS_PMUXCR_SSI2_SSI 0x00002000 /* Used for SSI2 */ +#define CCSR_GUTS_PMUXCR_LA_22_25_LA 0x00000000 /* Latched Address */ +#define CCSR_GUTS_PMUXCR_LA_22_25_HI 0x00000400 /* High impedance */ +#define CCSR_GUTS_PMUXCR_DBGDRV 0x00000200 /* Signals not driven */ +#define CCSR_GUTS_PMUXCR_DMA2_0 0x00000008 +#define CCSR_GUTS_PMUXCR_DMA2_3 0x00000004 +#define CCSR_GUTS_PMUXCR_DMA1_0 0x00000002 +#define CCSR_GUTS_PMUXCR_DMA1_3 0x00000001 + +/* + * Set the DMA external control bits in the GUTS + * + * The DMA external control bits in the PMUXCR are only meaningful for + * channels 0 and 3. Any other channels are ignored. + * + * guts: Pointer to GUTS structure + * co: The DMA controller (0 or 1) + * ch: The channel on the DMA controller (0, 1, 2, or 3) + * value: the new value for the bit (0 or 1) + */ +static inline void guts_set_pmuxcr_dma(struct ccsr_guts __iomem *guts, + unsigned int co, unsigned int ch, unsigned int value) +{ + if ((ch == 0) || (ch == 3)) { + unsigned int shift = 2 * (co + 1) - (ch & 1) - 1; + + clrsetbits_be32(&guts->pmuxcr, 1 << shift, value << shift); + } +} + +#define CCSR_GUTS_CLKDVDR_PXCKEN 0x80000000 +#define CCSR_GUTS_CLKDVDR_SSICKEN 0x20000000 +#define CCSR_GUTS_CLKDVDR_PXCKINV 0x10000000 +#define CCSR_GUTS_CLKDVDR_PXCKDLY_SHIFT 25 +#define CCSR_GUTS_CLKDVDR_PXCKDLY_MASK 0x06000000 +#define CCSR_GUTS_CLKDVDR_PXCKDLY(x) \ + (((x) & 3) << CCSR_GUTS_CLKDVDR_PXCKDLY_SHIFT) +#define CCSR_GUTS_CLKDVDR_PXCLK_SHIFT 16 +#define CCSR_GUTS_CLKDVDR_PXCLK_MASK 0x001F0000 +#define CCSR_GUTS_CLKDVDR_PXCLK(x) (((x) & 31) << CCSR_GUTS_CLKDVDR_PXCLK_SHIFT) +#define CCSR_GUTS_CLKDVDR_SSICLK_MASK 0x000000FF +#define CCSR_GUTS_CLKDVDR_SSICLK(x) ((x) & CCSR_GUTS_CLKDVDR_SSICLK_MASK) + +#endif + +#endif diff --git a/sound/soc/fsl/mpc8610_hpcd.c b/sound/soc/fsl/mpc8610_hpcd.c index 9621b9140df6..6f236f170cf5 100644 --- a/sound/soc/fsl/mpc8610_hpcd.c +++ b/sound/soc/fsl/mpc8610_hpcd.c @@ -12,11 +12,11 @@ #include #include +#include #include #include #include #include -#include #include "fsl_dma.h" #include "fsl_ssi.h" diff --git a/sound/soc/fsl/p1022_ds.c b/sound/soc/fsl/p1022_ds.c index 71c1a7dc3aeb..747aab0602bd 100644 --- a/sound/soc/fsl/p1022_ds.c +++ b/sound/soc/fsl/p1022_ds.c @@ -11,12 +11,12 @@ */ #include +#include #include #include #include #include #include -#include #include "fsl_dma.h" #include "fsl_ssi.h" diff --git a/sound/soc/fsl/p1022_rdk.c b/sound/soc/fsl/p1022_rdk.c index ee29048424be..1dd49e5f9675 100644 --- a/sound/soc/fsl/p1022_rdk.c +++ b/sound/soc/fsl/p1022_rdk.c @@ -18,12 +18,12 @@ */ #include +#include #include #include #include #include #include -#include #include "fsl_dma.h" #include "fsl_ssi.h" -- cgit v1.2.3 From 939fbf00805b395743e2406755ca20f5f959a598 Mon Sep 17 00:00:00 2001 From: Tiejun Chen Date: Tue, 6 Oct 2015 22:48:11 -0500 Subject: powerpc/85xx: Implement 64-bit kexec support Unlike 32-bit 85xx kexec, we don't do a core reset. Signed-off-by: Tiejun Chen [scottwood: edit changelog, and cleanup] Signed-off-by: Scott Wood --- arch/powerpc/platforms/85xx/smp.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index a0763be7259e..2e4668435307 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -351,6 +351,7 @@ struct smp_ops_t smp_85xx_ops = { }; #ifdef CONFIG_KEXEC +#ifdef CONFIG_PPC32 atomic_t kexec_down_cpus = ATOMIC_INIT(0); void mpc85xx_smp_kexec_cpu_down(int crash_shutdown, int secondary) @@ -370,9 +371,18 @@ static void mpc85xx_smp_kexec_down(void *arg) if (ppc_md.kexec_cpu_down) ppc_md.kexec_cpu_down(0,1); } +#else +void mpc85xx_smp_kexec_cpu_down(int crash_shutdown, int secondary) +{ + local_irq_disable(); + hard_irq_disable(); + mpic_teardown_this_cpu(secondary); +} +#endif static void mpc85xx_smp_machine_kexec(struct kimage *image) { +#ifdef CONFIG_PPC32 int timeout = INT_MAX; int i, num_cpus = num_present_cpus(); @@ -393,6 +403,7 @@ static void mpc85xx_smp_machine_kexec(struct kimage *image) if ( i == smp_processor_id() ) continue; mpic_reset_core(i); } +#endif default_machine_kexec(image); } -- cgit v1.2.3 From f34b3e19fd060b87e97c89050f2b40b8ada468a9 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 6 Oct 2015 22:48:12 -0500 Subject: powerpc/e6500: kexec: Handle hardware threads The new kernel will be expecting secondary threads to be disabled, not spinning. Signed-off-by: Scott Wood --- arch/powerpc/kernel/head_64.S | 16 ++++++++++++++ arch/powerpc/platforms/85xx/smp.c | 46 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) (limited to 'arch/powerpc/platforms') diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S index d48125d0c048..8b2bf0d3b7d1 100644 --- a/arch/powerpc/kernel/head_64.S +++ b/arch/powerpc/kernel/head_64.S @@ -182,6 +182,8 @@ exception_marker: #ifdef CONFIG_PPC_BOOK3E _GLOBAL(fsl_secondary_thread_init) + mfspr r4,SPRN_BUCSR + /* Enable branch prediction */ lis r3,BUCSR_INIT@h ori r3,r3,BUCSR_INIT@l @@ -196,10 +198,24 @@ _GLOBAL(fsl_secondary_thread_init) * number. There are two threads per core, so shift everything * but the low bit right by two bits so that the cpu numbering is * continuous. + * + * If the old value of BUCSR is non-zero, this thread has run + * before. Thus, we assume we are coming from kexec or a similar + * scenario, and PIR is already set to the correct value. This + * is a bit of a hack, but there are limited opportunities for + * getting information into the thread and the alternatives + * seemed like they'd be overkill. We can't tell just by looking + * at the old PIR value which state it's in, since the same value + * could be valid for one thread out of reset and for a different + * thread in Linux. */ + mfspr r3, SPRN_PIR + cmpwi r4,0 + bne 1f rlwimi r3, r3, 30, 2, 30 mtspr SPRN_PIR, r3 +1: #endif _GLOBAL(generic_secondary_thread_init) diff --git a/arch/powerpc/platforms/85xx/smp.c b/arch/powerpc/platforms/85xx/smp.c index 2e4668435307..712764f3dcbc 100644 --- a/arch/powerpc/platforms/85xx/smp.c +++ b/arch/powerpc/platforms/85xx/smp.c @@ -374,9 +374,55 @@ static void mpc85xx_smp_kexec_down(void *arg) #else void mpc85xx_smp_kexec_cpu_down(int crash_shutdown, int secondary) { + int cpu = smp_processor_id(); + int sibling = cpu_last_thread_sibling(cpu); + bool notified = false; + int disable_cpu; + int disable_threadbit = 0; + long start = mftb(); + long now; + local_irq_disable(); hard_irq_disable(); mpic_teardown_this_cpu(secondary); + + if (cpu == crashing_cpu && cpu_thread_in_core(cpu) != 0) { + /* + * We enter the crash kernel on whatever cpu crashed, + * even if it's a secondary thread. If that's the case, + * disable the corresponding primary thread. + */ + disable_threadbit = 1; + disable_cpu = cpu_first_thread_sibling(cpu); + } else if (sibling != crashing_cpu && + cpu_thread_in_core(cpu) == 0 && + cpu_thread_in_core(sibling) != 0) { + disable_threadbit = 2; + disable_cpu = sibling; + } + + if (disable_threadbit) { + while (paca[disable_cpu].kexec_state < KEXEC_STATE_REAL_MODE) { + barrier(); + now = mftb(); + if (!notified && now - start > 1000000) { + pr_info("%s/%d: waiting for cpu %d to enter KEXEC_STATE_REAL_MODE (%d)\n", + __func__, smp_processor_id(), + disable_cpu, + paca[disable_cpu].kexec_state); + notified = true; + } + } + + if (notified) { + pr_info("%s: cpu %d done waiting\n", + __func__, disable_cpu); + } + + mtspr(SPRN_TENC, disable_threadbit); + while (mfspr(SPRN_TENSR) & disable_threadbit) + cpu_relax(); + } } #endif -- cgit v1.2.3