diff options
| author | Kumar Gala <galak@freescale.com> | 2005-04-17 02:24:22 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-17 02:24:22 +0400 |
| commit | f50b153b1966230e78034d5ab1641ca4bb5db56d (patch) | |
| tree | 9f3f0971789ca2cbb59efbd694c172804f4547cd /include/asm-ppc/reg_booke.h | |
| parent | b464fce5edc08a825907e9d48a2d2f1af0393fef (diff) | |
| download | linux-f50b153b1966230e78034d5ab1641ca4bb5db56d.tar.xz | |
[PATCH] ppc32: Support 36-bit physical addressing on e500
To add support for 36-bit physical addressing on e500 the following changes
have been made. The changes are generalized to support any physical address
size larger than 32-bits:
* Allow FSL Book-E parts to use a 64-bit PTE, it is 44-bits of pfn, 20-bits
of flags.
* Introduced new CPU feature (CPU_FTR_BIG_PHYS) to allow runtime handling of
updating hardware register (SPRN_MAS7) which holds the upper 32-bits of
physical address that will be written into the TLB. This is useful since
not all e500 cores support 36-bit physical addressing.
* Currently have a pass through implementation of fixup_bigphys_addr
* Moved _PAGE_DIRTY in the 64-bit PTE case to free room for three additional
storage attributes that may exist in future FSL Book-E cores and updated
fault handler to copy these bits into the hardware TLBs.
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc/reg_booke.h')
| -rw-r--r-- | include/asm-ppc/reg_booke.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-ppc/reg_booke.h b/include/asm-ppc/reg_booke.h index 4b03f8e26b72..e70c25f3c339 100644 --- a/include/asm-ppc/reg_booke.h +++ b/include/asm-ppc/reg_booke.h @@ -172,6 +172,7 @@ do { \ #define SPRN_MAS4 0x274 /* MMU Assist Register 4 */ #define SPRN_MAS5 0x275 /* MMU Assist Register 5 */ #define SPRN_MAS6 0x276 /* MMU Assist Register 6 */ +#define SPRN_MAS7 0x3b0 /* MMU Assist Register 7 */ #define SPRN_PID1 0x279 /* Process ID Register 1 */ #define SPRN_PID2 0x27A /* Process ID Register 2 */ #define SPRN_TLB0CFG 0x2B0 /* TLB 0 Config Register */ |