diff options
| author |   Kumar Gala <galak@freescale.com> | 2005-04-16 15:24:22 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:24:22 -0700 |
| commit | f50b153b1966230e78034d5ab1641ca4bb5db56d (patch) | |
| tree | 9f3f0971789ca2cbb59efbd694c172804f4547cd /arch/ppc/Kconfig | |
| parent | [PATCH] ppc32: Allow adjust of pfn offset in pte (diff) | |
| download | linux-dev-f50b153b1966230e78034d5ab1641ca4bb5db56d.tar.xz linux-dev-f50b153b1966230e78034d5ab1641ca4bb5db56d.zip | |
[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 'arch/ppc/Kconfig')
| -rw-r--r-- | arch/ppc/Kconfig | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/ppc/Kconfig b/arch/ppc/Kconfig index 813c6c9a6d99..74aa1e92a395 100644 --- a/arch/ppc/Kconfig +++ b/arch/ppc/Kconfig @@ -98,13 +98,19 @@ config FSL_BOOKE config PTE_64BIT bool - depends on 44x - default y + depends on 44x || E500 + default y if 44x + default y if E500 && PHYS_64BIT config PHYS_64BIT - bool - depends on 44x - default y + bool 'Large physical address support' if E500 + depends on 44x || E500 + default y if 44x + ---help--- + This option enables kernel support for larger than 32-bit physical + addresses. This features is not be available on all e500 cores. + + If in doubt, say N here. config ALTIVEC bool "AltiVec Support" |