diff options
Diffstat (limited to 'arch/mips/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 82 |
1 files changed, 57 insertions, 25 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 058446f01487..de3b32a507d2 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -4,6 +4,7 @@ config MIPS default y select ARCH_32BIT_OFF_T if !64BIT select ARCH_BINFMT_ELF_STATE if MIPS_FP_SUPPORT + select ARCH_HAS_CURRENT_STACK_POINTER if !CC_IS_CLANG || CLANG_VERSION >= 140000 select ARCH_HAS_DEBUG_VIRTUAL if !64BIT select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_KCOV @@ -101,6 +102,7 @@ config MIPS select TRACE_IRQFLAGS_SUPPORT select VIRT_TO_BUS select ARCH_HAS_ELFCORE_COMPAT + select HAVE_ARCH_KCSAN if 64BIT config MIPS_FIXUP_BIGPHYS_ADDR bool @@ -511,6 +513,7 @@ config MACH_LOONGSON64 select USE_OF select BUILTIN_DTB select PCI_HOST_GENERIC + select HAVE_ARCH_NODEDATA_EXTENSION if NUMA help This enables the support of Loongson-2/3 family of machines. @@ -707,6 +710,7 @@ config SGI_IP27 select WAR_R10000_LLSC select MIPS_L1_CACHE_SHIFT_7 select NUMA + select HAVE_ARCH_NODEDATA_EXTENSION help This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics workstations. To compile a Linux kernel that runs on these, say Y @@ -926,9 +930,6 @@ config SNI_RM Technology and now in turn merged with Fujitsu. Say Y here to support this machine type. -config MACH_TX39XX - bool "Toshiba TX39 series based machines" - config MACH_TX49XX bool "Toshiba TX49 series based machines" select WAR_TX49XX_ICACHE_INDEX_INV @@ -1343,19 +1344,14 @@ config LOONGSON3_ENHANCEMENT new Loongson-3 machines only, please say 'Y' here. config CPU_LOONGSON3_WORKAROUNDS - bool "Old Loongson-3 LLSC Workarounds" + bool "Loongson-3 LLSC Workarounds" default y if SMP depends on CPU_LOONGSON64 help Loongson-3 processors have the llsc issues which require workarounds. Without workarounds the system may hang unexpectedly. - Newer Loongson-3 will fix these issues and no workarounds are needed. - The workarounds have no significant side effect on them but may - decrease the performance of the system so this option should be - disabled unless the kernel is intended to be run on old systems. - - If unsure, please say Y. + Say Y, unless you know what you are doing. config CPU_LOONGSON3_CPUCFG_EMULATION bool "Emulate the CPUCFG instruction on older Loongson cores" @@ -1583,12 +1579,6 @@ config CPU_R3000 might be a safe bet. If the resulting kernel does not work, try to recompile with R3000. -config CPU_TX39XX - bool "R39XX" - depends on SYS_HAS_CPU_TX39XX - select CPU_SUPPORTS_32BIT_KERNEL - select CPU_R3K_TLB - config CPU_VR41XX bool "R41xx" depends on SYS_HAS_CPU_VR41XX @@ -1915,9 +1905,6 @@ config SYS_HAS_CPU_P5600 config SYS_HAS_CPU_R3000 bool -config SYS_HAS_CPU_TX39XX - bool - config SYS_HAS_CPU_VR41XX bool @@ -2148,7 +2135,7 @@ config PAGE_SIZE_8KB config PAGE_SIZE_16KB bool "16kB" - depends on !CPU_R3000 && !CPU_TX39XX + depends on !CPU_R3000 help Using 16kB page size will result in higher performance kernel at the price of higher memory consumption. This option is available on @@ -2167,7 +2154,7 @@ config PAGE_SIZE_32KB config PAGE_SIZE_64KB bool "64kB" - depends on !CPU_R3000 && !CPU_TX39XX + depends on !CPU_R3000 help Using 64kB page size will result in higher performance kernel at the price of higher memory consumption. This option is available on @@ -2235,7 +2222,7 @@ config CPU_HAS_PREFETCH config CPU_GENERIC_DUMP_TLB bool - default y if !(CPU_R3000 || CPU_TX39XX) + default y if !CPU_R3000 config MIPS_FP_SUPPORT bool "Floating Point support" if EXPERT @@ -2255,7 +2242,7 @@ config MIPS_FP_SUPPORT config CPU_R2300_FPU bool depends on MIPS_FP_SUPPORT - default y if CPU_R3000 || CPU_TX39XX + default y if CPU_R3000 config CPU_R3K_TLB bool @@ -2520,13 +2507,51 @@ config CPU_HAS_SYNC # # CPU non-features # + +# Work around the "daddi" and "daddiu" CPU errata: +# +# - The `daddi' instruction fails to trap on overflow. +# "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", +# erratum #23 +# +# - The `daddiu' instruction can produce an incorrect result. +# "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", +# erratum #41 +# "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum +# #15 +# "MIPS R4400PC/SC Errata, Processor Revision 1.0", erratum #7 +# "MIPS R4400MC Errata, Processor Revision 1.0", erratum #5 config CPU_DADDI_WORKAROUNDS bool +# Work around certain R4000 CPU errata (as implemented by GCC): +# +# - A double-word or a variable shift may give an incorrect result +# if executed immediately after starting an integer division: +# "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", +# erratum #28 +# "MIPS R4000MC Errata, Processor Revision 2.2 and 3.0", erratum +# #19 +# +# - A double-word or a variable shift may give an incorrect result +# if executed while an integer multiplication is in progress: +# "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", +# errata #16 & #28 +# +# - An integer division may give an incorrect result if started in +# a delay slot of a taken branch or a jump: +# "MIPS R4000PC/SC Errata, Processor Revision 2.2 and 3.0", +# erratum #52 config CPU_R4000_WORKAROUNDS bool select CPU_R4400_WORKAROUNDS +# Work around certain R4400 CPU errata (as implemented by GCC): +# +# - A double-word or a variable shift may give an incorrect result +# if executed immediately after starting an integer division: +# "MIPS R4400MC Errata, Processor Revision 1.0", erratum #10 +# "MIPS R4400MC Errata, Processor Revision 2.0 & 3.0", erratum #4 config CPU_R4400_WORKAROUNDS bool @@ -2536,13 +2561,13 @@ config CPU_R4X00_BUGS64 config MIPS_ASID_SHIFT int - default 6 if CPU_R3000 || CPU_TX39XX + default 6 if CPU_R3000 default 0 config MIPS_ASID_BITS int default 0 if MIPS_ASID_BITS_VARIABLE - default 6 if CPU_R3000 || CPU_TX39XX + default 6 if CPU_R3000 default 8 config MIPS_ASID_BITS_VARIABLE @@ -2685,6 +2710,9 @@ config NUMA config SYS_SUPPORTS_NUMA bool +config HAVE_ARCH_NODEDATA_EXTENSION + bool + config RELOCATABLE bool "Relocatable kernel" depends on SYS_SUPPORTS_RELOCATABLE @@ -3202,6 +3230,10 @@ config MIPS32_N32 If unsure, say N. +config CC_HAS_MNO_BRANCH_LIKELY + def_bool y + depends on $(cc-option,-mno-branch-likely) + menu "Power management options" config ARCH_HIBERNATION_POSSIBLE |