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| author | Catalin Marinas <catalin.marinas@arm.com> | 2009-05-30 13:00:18 (GMT) |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2009-05-30 13:00:18 (GMT) |
| commit | 26584853a44c58f3d6ac7360d697a2ddcd1a3efa (patch) | |
| tree | a47156d781c6207d316746a056a81ca82b90d452 /arch/arm/mm/Kconfig | |
| parent | ee8c9571191e588ede9a220ded807e33c4897d91 (diff) | |
| download | linux-26584853a44c58f3d6ac7360d697a2ddcd1a3efa.tar.xz | |
Add core support for ARMv6/v7 big-endian
Starting with ARMv6, the CPUs support the BE-8 variant of big-endian
(byte-invariant). This patch adds the core support:
- setting of the BE-8 mode via the CPSR.E register for both kernel and
user threads
- big-endian page table walking
- REV used to rotate instructions read from memory during fault
processing as they are still little-endian format
- Kconfig and Makefile support for BE-8. The --be8 option must be passed
to the final linking stage to convert the instructions to
little-endian
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm/mm/Kconfig')
| -rw-r--r-- | arch/arm/mm/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 76bbcde..a25f34b 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -639,6 +639,20 @@ config CPU_BIG_ENDIAN port must properly enable any big-endian related features of your chipset/board/processor. +config CPU_ENDIAN_BE8 + bool + depends on CPU_BIG_ENDIAN + default CPU_V6 || CPU_V7 + help + Support for the BE-8 (big-endian) mode on ARMv6 and ARMv7 processors. + +config CPU_ENDIAN_BE32 + bool + depends on CPU_BIG_ENDIAN + default !CPU_ENDIAN_BE8 + help + Support for the BE-32 (big-endian) mode on pre-ARMv6 processors. + config CPU_HIGH_VECTOR depends on !MMU && CPU_CP15 && !CPU_ARM740T bool "Select the High exception vector" |