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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-07-24 01:15:39 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-08-20 02:25:07 +0200 |
| commit | 13363ab9b9d040ebeace3a1a3a5ddcb13bf0d644 (patch) | |
| tree | 3745a72246b62a991d9d2d38faf91d136515b8a7 /arch/powerpc/include/asm/reg.h | |
| parent | powerpc: Add memory management headers for new 64-bit BookE (diff) | |
| download | linux-13363ab9b9d040ebeace3a1a3a5ddcb13bf0d644.tar.xz linux-13363ab9b9d040ebeace3a1a3a5ddcb13bf0d644.zip | |
powerpc: Add definitions used by exception handling on 64-bit Book3E
This adds various definitions and macros used by the exception and TLB
miss handling on 64-bit BookE
It also adds the definitions of the SPRGs used for various exception types
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/reg.h')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index c8715331e1b0..6315edc205d8 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -652,6 +652,16 @@ * - SPRG2 scratch for exception vectors * - SPRG3 unused (user visible) * + * 64-bit embedded + * - SPRG0 generic exception scratch + * - SPRG2 TLB exception stack + * - SPRG3 unused (user visible) + * - SPRG4 unused (user visible) + * - SPRG6 TLB miss scratch (user visible, sorry !) + * - SPRG7 critical exception scratch + * - SPRG8 machine check exception scratch + * - SPRG9 debug exception scratch + * * All 32-bit: * - SPRG3 current thread_info pointer * (virtual on BookE, physical on others) @@ -705,6 +715,15 @@ #define SPRN_SPRG_SCRATCH0 SPRN_SPRG2 #endif +#ifdef CONFIG_PPC_BOOK3E_64 +#define SPRN_SPRG_MC_SCRATCH SPRN_SPRG8 +#define SPRN_SPRG_CRIT_SCRATCH SPRN_SPRG7 +#define SPRN_SPRG_DBG_SCRATCH SPRN_SPRG9 +#define SPRN_SPRG_TLB_EXFRAME SPRN_SPRG2 +#define SPRN_SPRG_TLB_SCRATCH SPRN_SPRG6 +#define SPRN_SPRG_GEN_SCRATCH SPRN_SPRG0 +#endif + #ifdef CONFIG_PPC_BOOK3S_32 #define SPRN_SPRG_SCRATCH0 SPRN_SPRG0 #define SPRN_SPRG_SCRATCH1 SPRN_SPRG1 |