diff options
| author | Kumar Gala <galak@kernel.crashing.org> | 2010-03-29 21:03:11 -0500 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2010-07-16 10:55:09 -0500 |
| commit | ae3913922ad8d001310bdb74065d58b3baa0f537 (patch) | |
| tree | 964b83ff54f2872f6dbafecbf76adef6aaf4d0b8 /arch/powerpc/include | |
| parent | 2a3a96ca5e7e407140e3c3ef77ece72d5db30bc4 (diff) | |
powerpc/85xx: Add support for link stack & STAC on e5500
The e5500 has a link register stack and segment target address cache.
Its safe to enable these bits on older e500 cores as the bits are
implemented in the register.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/processor.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h index 9ec319ae1..844552c2d 100644 --- a/arch/powerpc/include/asm/processor.h +++ b/arch/powerpc/include/asm/processor.h @@ -534,9 +534,11 @@ #define SPRN_MCSRR0 0x23a /* Machine Check Save and Restore Register 0 */ #define SPRN_MCSRR1 0x23b /* Machine Check Save and Restore Register 1 */ #define SPRN_BUCSR 0x3f5 /* Branch Control and Status Register */ +#define BUCSR_STAC_EN 0x01000000 /* Segment target addr cache enable */ +#define BUCSR_LS_EN 0x00400000 /* Link stack enable */ #define BUCSR_BBFI 0x00000200 /* Branch buffer flash invalidate */ #define BUCSR_BPEN 0x00000001 /* Branch prediction enable */ -#define BUCSR_ENABLE (BUCSR_BBFI|BUCSR_BPEN) +#define BUCSR_ENABLE (BUCSR_STAC_EN|BUCSR_LS_EN|BUCSR_BBFI|BUCSR_BPEN) #define SPRN_BBEAR 0x201 /* Branch Buffer Entry Address Register */ #define SPRN_BBTAR 0x202 /* Branch Buffer Target Address Register */ #define SPRN_PID1 0x279 /* Process ID Register 1 */ |