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powerpc: Add memory management headers for new 64-bit BookE

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This adds the PTE and pgtable format definitions, along with changes
to the kernel memory map and other definitions related to implementing
support for 64-bit Book3E. This also shields some asm-offset bits that
are currently only relevant on 32-bit

We also move the definition of the "linux" page size constants to
the common mmu.h file and add a few sizes that are relevant to
embedded processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
2009-07-28 11:59:34 +10:00
parent 0257c99cdf
commit 57e2a99f74
10 changed files with 205 additions and 40 deletions
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20
arch/powerpc/include/asm/mmu-hash64.h
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@@ -138,26 +138,6 @@ struct mmu_psize_def
#endif /* __ASSEMBLY__ */
/*
* The kernel use the constants below to index in the page sizes array.
* The use of fixed constants for this purpose is better for performances
* of the low level hash refill handlers.
*
* A non supported page size has a "shift" field set to 0
*
* Any new page size being implemented can get a new entry in here. Whether
* the kernel will use it or not is a different matter though. The actual page
* size used by hugetlbfs is not defined here and may be made variable
*/
#define MMU_PAGE_4K 0 /* 4K */
#define MMU_PAGE_64K 1 /* 64K */
#define MMU_PAGE_64K_AP 2 /* 64K Admixed (in a 4K segment) */
#define MMU_PAGE_1M 3 /* 1M */
#define MMU_PAGE_16M 4 /* 16M */
#define MMU_PAGE_16G 5 /* 16G */
#define MMU_PAGE_COUNT 6
/*
* Segment sizes.
* These are the values used by hardware in the B field of