diff options
Diffstat (limited to 'arch/arm/mm/Kconfig')
| -rw-r--r-- | arch/arm/mm/Kconfig | 261 |
1 files changed, 197 insertions, 64 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 101b9681c08..c348eaee7ee 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -10,8 +10,8 @@ config CPU_ARM7TDMI depends on !MMU select CPU_32v4T select CPU_ABRT_LV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4 + select CPU_PABRT_LEGACY help A 32-bit RISC microprocessor based on the ARM7 processor core which has no memory control unit and cache. @@ -24,11 +24,11 @@ config CPU_ARM720T bool "Support ARM720T processor" if ARCH_INTEGRATOR select CPU_32v4T select CPU_ABRT_LV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4 select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WT if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WT if MMU help A 32-bit RISC processor with 8kByte Cache, Write Buffer and @@ -43,9 +43,9 @@ config CPU_ARM740T depends on !MMU select CPU_32v4T select CPU_ABRT_LV4T - select CPU_PABRT_LEGACY - select CPU_CACHE_V3 # although the core is v4t + select CPU_CACHE_V4 select CPU_CP15_MPU + select CPU_PABRT_LEGACY help A 32-bit RISC processor with 8KB cache or 4KB variants, write buffer and MPU(Protection Unit) built around @@ -60,8 +60,8 @@ config CPU_ARM9TDMI depends on !MMU select CPU_32v4T select CPU_ABRT_NOMMU - select CPU_PABRT_LEGACY select CPU_CACHE_V4 + select CPU_PABRT_LEGACY help A 32-bit RISC microprocessor based on the ARM9 processor core which has no memory control unit and cache. @@ -74,11 +74,11 @@ config CPU_ARM920T bool "Support ARM920T processor" if ARCH_INTEGRATOR select CPU_32v4T select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4WT select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM920T is licensed to be produced by numerous vendors, @@ -92,11 +92,11 @@ config CPU_ARM922T bool "Support ARM922T processor" if ARCH_INTEGRATOR select CPU_32v4T select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4WT select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM922T is a version of the ARM920T, but with smaller @@ -111,11 +111,11 @@ config CPU_ARM925T bool "Support ARM925T processor" if ARCH_OMAP1 select CPU_32v4T select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4WT select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM925T is a mix between the ARM920T and ARM926T, but with @@ -130,10 +130,10 @@ config CPU_ARM926T bool "Support ARM926T processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB select CPU_32v5 select CPU_ABRT_EV5TJ - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help This is a variant of the ARM920. It has slightly different @@ -148,11 +148,11 @@ config CPU_FA526 bool select CPU_32v4 select CPU_ABRT_EV4 - select CPU_PABRT_LEGACY - select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_CACHE_FA + select CPU_CACHE_VIVT select CPU_COPY_FA if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_FA if MMU help The FA526 is a version of the ARMv4 compatible processor with @@ -167,9 +167,9 @@ config CPU_ARM940T depends on !MMU select CPU_32v4T select CPU_ABRT_NOMMU - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT select CPU_CP15_MPU + select CPU_PABRT_LEGACY help ARM940T is a member of the ARM9TDMI family of general- purpose microprocessors with MPU and separate 4KB @@ -185,9 +185,9 @@ config CPU_ARM946E depends on !MMU select CPU_32v5 select CPU_ABRT_NOMMU - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT select CPU_CP15_MPU + select CPU_PABRT_LEGACY help ARM946E-S is a member of the ARM9E-S family of high- performance, 32-bit system-on-chip processor solutions. @@ -201,11 +201,11 @@ config CPU_ARM1020 bool "Support ARM1020T (rev 0) processor" if ARCH_INTEGRATOR select CPU_32v5 select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4WT select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM1020 is the 32K cached version of the ARM10 processor, @@ -217,25 +217,25 @@ config CPU_ARM1020 # ARM1020E - needs validating config CPU_ARM1020E bool "Support ARM1020E processor" if ARCH_INTEGRATOR + depends on n select CPU_32v5 select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_V4WT select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU - depends on n # ARM1022E config CPU_ARM1022 bool "Support ARM1022E processor" if ARCH_INTEGRATOR select CPU_32v5 select CPU_ABRT_EV4T - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU # can probably do better + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM1022E is an implementation of the ARMv5TE architecture @@ -250,10 +250,10 @@ config CPU_ARM1026 bool "Support ARM1026EJ-S processor" if ARCH_INTEGRATOR select CPU_32v5 select CPU_ABRT_EV5T # But need Jazelle, but EV5TJ ignores bit 10 - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU # can probably do better + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU help The ARM1026EJ-S is an implementation of the ARMv5TEJ architecture @@ -264,15 +264,15 @@ config CPU_ARM1026 # SA110 config CPU_SA110 - bool "Support StrongARM(R) SA-110 processor" if ARCH_RPC + bool select CPU_32v3 if ARCH_RPC select CPU_32v4 if !ARCH_RPC select CPU_ABRT_EV4 - select CPU_PABRT_LEGACY select CPU_CACHE_V4WB select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_V4WB if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WB if MMU help The Intel StrongARM(R) SA-110 is a 32-bit microprocessor and @@ -288,10 +288,10 @@ config CPU_SA1100 bool select CPU_32v4 select CPU_ABRT_EV4 - select CPU_PABRT_LEGACY select CPU_CACHE_V4WB select CPU_CACHE_VIVT select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WB if MMU # XScale @@ -299,9 +299,9 @@ config CPU_XSCALE bool select CPU_32v5 select CPU_ABRT_EV5T - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU # XScale Core Version 3 @@ -309,9 +309,9 @@ config CPU_XSC3 bool select CPU_32v5 select CPU_ABRT_EV5T - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU select IO_36 @@ -320,21 +320,21 @@ config CPU_MOHAWK bool select CPU_32v5 select CPU_ABRT_EV5T - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT + select CPU_COPY_V4WB if MMU select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_V4WBI if MMU - select CPU_COPY_V4WB if MMU # Feroceon config CPU_FEROCEON bool select CPU_32v5 select CPU_ABRT_EV5T - select CPU_PABRT_LEGACY select CPU_CACHE_VIVT - select CPU_CP15_MMU select CPU_COPY_FEROCEON if MMU + select CPU_CP15_MMU + select CPU_PABRT_LEGACY select CPU_TLB_FEROCEON if MMU config CPU_FEROCEON_OLD_ID @@ -349,20 +349,24 @@ config CPU_FEROCEON_OLD_ID # Marvell PJ4 config CPU_PJ4 bool - select CPU_V7 select ARM_THUMBEE + select CPU_V7 + +config CPU_PJ4B + bool + select CPU_V7 # ARMv6 config CPU_V6 bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX select CPU_32v6 select CPU_ABRT_EV6 - select CPU_PABRT_V6 select CPU_CACHE_V6 select CPU_CACHE_VIPT + select CPU_COPY_V6 if MMU select CPU_CP15_MMU select CPU_HAS_ASID if MMU - select CPU_COPY_V6 if MMU + select CPU_PABRT_V6 select CPU_TLB_V6 if MMU # ARMv6k @@ -371,12 +375,12 @@ config CPU_V6K select CPU_32v6 select CPU_32v6K select CPU_ABRT_EV6 - select CPU_PABRT_V6 select CPU_CACHE_V6 select CPU_CACHE_VIPT + select CPU_COPY_V6 if MMU select CPU_CP15_MMU select CPU_HAS_ASID if MMU - select CPU_COPY_V6 if MMU + select CPU_PABRT_V6 select CPU_TLB_V6 if MMU # ARMv7 @@ -385,44 +389,64 @@ config CPU_V7 select CPU_32v6K select CPU_32v7 select CPU_ABRT_EV7 - select CPU_PABRT_V7 select CPU_CACHE_V7 select CPU_CACHE_VIPT - select CPU_CP15_MMU - select CPU_HAS_ASID if MMU select CPU_COPY_V6 if MMU + select CPU_CP15_MMU if MMU + select CPU_CP15_MPU if !MMU + select CPU_HAS_ASID if MMU + select CPU_PABRT_V7 select CPU_TLB_V7 if MMU +# ARMv7M +config CPU_V7M + bool + select CPU_32v7M + select CPU_ABRT_NOMMU + select CPU_CACHE_NOP + select CPU_PABRT_LEGACY + select CPU_THUMBONLY + +config CPU_THUMBONLY + bool + # There are no CPUs available with MMU that don't implement an ARM ISA: + depends on !MMU + help + Select this if your CPU doesn't support the 32 bit ARM instructions. + # Figure out what processor architecture version we should be using. # This defines the compiler instruction set which depends on the machine type. config CPU_32v3 bool - select TLS_REG_EMUL if SMP || !MMU - select NEEDS_SYSCALL_FOR_CMPXCHG if SMP select CPU_USE_DOMAINS if MMU + select NEEDS_SYSCALL_FOR_CMPXCHG if SMP + select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v4 bool - select TLS_REG_EMUL if SMP || !MMU - select NEEDS_SYSCALL_FOR_CMPXCHG if SMP select CPU_USE_DOMAINS if MMU + select NEEDS_SYSCALL_FOR_CMPXCHG if SMP + select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v4T bool - select TLS_REG_EMUL if SMP || !MMU - select NEEDS_SYSCALL_FOR_CMPXCHG if SMP select CPU_USE_DOMAINS if MMU + select NEEDS_SYSCALL_FOR_CMPXCHG if SMP + select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v5 bool - select TLS_REG_EMUL if SMP || !MMU - select NEEDS_SYSCALL_FOR_CMPXCHG if SMP select CPU_USE_DOMAINS if MMU + select NEEDS_SYSCALL_FOR_CMPXCHG if SMP + select NEED_KUSER_HELPERS + select TLS_REG_EMUL if SMP || !MMU config CPU_32v6 bool select TLS_REG_EMUL if !CPU_32v6K && !MMU - select CPU_USE_DOMAINS if CPU_V6 && MMU config CPU_32v6K bool @@ -430,6 +454,9 @@ config CPU_32v6K config CPU_32v7 bool +config CPU_32v7M + bool + # The abort model config CPU_ABRT_NOMMU bool @@ -465,9 +492,6 @@ config CPU_PABRT_V7 bool # The cache model -config CPU_CACHE_V3 - bool - config CPU_CACHE_V4 bool @@ -483,6 +507,9 @@ config CPU_CACHE_V6 config CPU_CACHE_V7 bool +config CPU_CACHE_NOP + bool + config CPU_CACHE_VIVT bool @@ -604,8 +631,12 @@ config ARCH_DMA_ADDR_T_64BIT bool config ARM_THUMB - bool "Support Thumb user binaries" - depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V6K || CPU_V7 || CPU_FEROCEON + bool "Support Thumb user binaries" if !CPU_THUMBONLY + depends on CPU_ARM720T || CPU_ARM740T || CPU_ARM920T || CPU_ARM922T || \ + CPU_ARM925T || CPU_ARM926T || CPU_ARM940T || CPU_ARM946E || \ + CPU_ARM1020 || CPU_ARM1020E || CPU_ARM1022 || CPU_ARM1026 || \ + CPU_XSCALE || CPU_XSC3 || CPU_MOHAWK || CPU_V6 || CPU_V6K || \ + CPU_V7 || CPU_FEROCEON || CPU_V7M default y help Say Y if you want to include kernel support for running user space @@ -624,11 +655,24 @@ config ARM_THUMBEE Say Y here if you have a CPU with the ThumbEE extension and code to make use of it. Say N for code that can run on CPUs without ThumbEE. +config ARM_VIRT_EXT + bool + depends on MMU + default y if CPU_V7 + help + Enable the kernel to make use of the ARM Virtualization + Extensions to install hypervisors without run-time firmware + assistance. + + A compliant bootloader is required in order to make maximum + use of this feature. Refer to Documentation/arm/Booting for + details. + config SWP_EMULATE bool "Emulate SWP/SWPB instructions" - depends on !CPU_USE_DOMAINS && CPU_V7 - select HAVE_PROC_CPU if PROC_FS + depends on CPU_V7 default y if SMP + select HAVE_PROC_CPU if PROC_FS help ARMv6 architecture deprecates use of the SWP/SWPB instructions. ARMv7 multiprocessing extensions introduce the ability to disable @@ -735,6 +779,7 @@ config CPU_BPREDICT_DISABLE config TLS_REG_EMUL bool + select NEED_KUSER_HELPERS help An SMP system using a pre-ARMv6 processor (there are apparently a few prototypes like that in existence) and therefore access to @@ -742,11 +787,43 @@ config TLS_REG_EMUL config NEEDS_SYSCALL_FOR_CMPXCHG bool + select NEED_KUSER_HELPERS help SMP on a pre-ARMv6 processor? Well OK then. Forget about fast user space cmpxchg support. It is just not possible. +config NEED_KUSER_HELPERS + bool + +config KUSER_HELPERS + bool "Enable kuser helpers in vector page" if !NEED_KUSER_HELPERS + default y + help + Warning: disabling this option may break user programs. + + Provide kuser helpers in the vector page. The kernel provides + helper code to userspace in read only form at a fixed location + in the high vector page to allow userspace to be independent of + the CPU type fitted to the system. This permits binaries to be + run on ARMv4 through to ARMv7 without modification. + + See Documentation/arm/kernel_user_helpers.txt for details. + + However, the fixed address nature of these helpers can be used + by ROP (return orientated programming) authors when creating + exploits. + + If all of the binaries and libraries which run on your platform + are built specifically for your platform, and make no use of + these helpers, then you can turn this option off to hinder + such exploits. However, in that case, if a binary or library + relying on those helpers is run, it will receive a SIGILL signal, + which will terminate the program. + + Say N here only if you are absolutely certain that you do not + need these helpers; otherwise, the safe option is to say Y. + config DMA_CACHE_RWFO bool "Enable read/write for ownership DMA cache maintenance" depends on CPU_V6K && SMP @@ -777,7 +854,7 @@ config OUTER_CACHE_SYNC config CACHE_FEROCEON_L2 bool "Enable the Feroceon L2 cache controller" - depends on ARCH_KIRKWOOD || ARCH_MV78XX0 + depends on ARCH_KIRKWOOD || ARCH_MV78XX0 || ARCH_MVEBU default y select OUTER_CACHE help @@ -812,14 +889,64 @@ config CACHE_L2X0 help This option enables the L2x0 PrimeCell. +if CACHE_L2X0 + config CACHE_PL310 bool - depends on CACHE_L2X0 default y if CPU_V7 && !(CPU_V6 || CPU_V6K) help This option enables optimisations for the PL310 cache controller. +config PL310_ERRATA_588369 + bool "PL310 errata: Clean & Invalidate maintenance operations do not invalidate clean lines" + help + The PL310 L2 cache controller implements three types of Clean & + Invalidate maintenance operations: by Physical Address + (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC). + They are architecturally defined to behave as the execution of a + clean operation followed immediately by an invalidate operation, + both performing to the same memory location. This functionality + is not correctly implemented in PL310 as clean lines are not + invalidated as a result of these operations. + +config PL310_ERRATA_727915 + bool "PL310 errata: Background Clean & Invalidate by Way operation can cause data corruption" + help + PL310 implements the Clean & Invalidate by Way L2 cache maintenance + operation (offset 0x7FC). This operation runs in background so that + PL310 can handle normal accesses while it is in progress. Under very + rare circumstances, due to this erratum, write data can be lost when + PL310 treats a cacheable write transaction during a Clean & + Invalidate by Way operation. + +config PL310_ERRATA_753970 + bool "PL310 errata: cache sync operation may be faulty" + help + This option enables the workaround for the 753970 PL310 (r3p0) erratum. + + Under some condition the effect of cache sync operation on + the store buffer still remains when the operation completes. + This means that the store buffer is always asked to drain and + this prevents it from merging any further writes. The workaround + is to replace the normal offset of cache sync operation (0x730) + by another offset targeting an unmapped PL310 register 0x740. + This has the same effect as the cache sync operation: store buffer + drain and waiting for all buffers empty. + +config PL310_ERRATA_769419 + bool "PL310 errata: no automatic Store Buffer drain" + help + On revisions of the PL310 prior to r3p2, the Store Buffer does + not automatically drain. This can cause normal, non-cacheable + writes to be retained when the memory system is idle, leading + to suboptimal I/O performance for drivers using coherent DMA. + This option adds a write barrier to the cpu_idle loop so that, + on systems with an outer cache, the store buffer is drained + explicitly. + +endif + config CACHE_TAUROS2 bool "Enable the Tauros2 L2 cache controller" depends on (ARCH_DOVE || ARCH_MMP || CPU_PJ4) @@ -874,3 +1001,9 @@ config ARCH_HAS_BARRIERS help This option allows the use of custom mandatory barriers included via the mach/barriers.h file. + +config ARCH_SUPPORTS_BIG_ENDIAN + bool + help + This option specifies the architecture can support big endian + operation. |