diff options
| author | Johannes Weiner <jw@emlix.com> | 2009-03-04 10:21:31 -0500 |
|---|---|---|
| committer | Chris Zankel <chris@zankel.net> | 2009-04-03 02:41:50 -0400 |
| commit | e5083a63b6a8546c5fe1e571fe529e3939787ec2 (patch) | |
| tree | 5c11db5b0a924f8bcfc404c202630d37ccfd7c3c /arch/xtensa/include/asm/page.h | |
| parent | 7789f89af9e8e426d7a7f173cf465a4fcadba7dd (diff) | |
xtensa: nommu support
Add support for !CONFIG_MMU setups.
Signed-off-by: Johannes Weiner <jw@emlix.com>
Signed-off-by: Chris Zankel <chris@zankel.net>
Diffstat (limited to 'arch/xtensa/include/asm/page.h')
| -rw-r--r-- | arch/xtensa/include/asm/page.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/xtensa/include/asm/page.h b/arch/xtensa/include/asm/page.h index a5a5d33c15d0..17e0c5383b10 100644 --- a/arch/xtensa/include/asm/page.h +++ b/arch/xtensa/include/asm/page.h | |||
| @@ -33,8 +33,14 @@ | |||
| 33 | #define PAGE_SIZE (__XTENSA_UL_CONST(1) << PAGE_SHIFT) | 33 | #define PAGE_SIZE (__XTENSA_UL_CONST(1) << PAGE_SHIFT) |
| 34 | #define PAGE_MASK (~(PAGE_SIZE-1)) | 34 | #define PAGE_MASK (~(PAGE_SIZE-1)) |
| 35 | 35 | ||
| 36 | #ifdef CONFIG_MMU | ||
| 36 | #define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR | 37 | #define PAGE_OFFSET XCHAL_KSEG_CACHED_VADDR |
| 37 | #define MAX_MEM_PFN XCHAL_KSEG_SIZE | 38 | #define MAX_MEM_PFN XCHAL_KSEG_SIZE |
| 39 | #else | ||
| 40 | #define PAGE_OFFSET 0 | ||
| 41 | #define MAX_MEM_PFN (PLATFORM_DEFAULT_MEM_START + PLATFORM_DEFAULT_MEM_SIZE) | ||
| 42 | #endif | ||
| 43 | |||
| 38 | #define PGTABLE_START 0x80000000 | 44 | #define PGTABLE_START 0x80000000 |
| 39 | 45 | ||
| 40 | /* | 46 | /* |
| @@ -165,8 +171,9 @@ extern void copy_user_page(void*, void*, unsigned long, struct page*); | |||
| 165 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) | 171 | #define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) |
| 166 | #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) | 172 | #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) |
| 167 | 173 | ||
| 174 | #ifdef CONFIG_MMU | ||
| 168 | #define WANT_PAGE_VIRTUAL | 175 | #define WANT_PAGE_VIRTUAL |
| 169 | 176 | #endif | |
| 170 | 177 | ||
| 171 | #endif /* __ASSEMBLY__ */ | 178 | #endif /* __ASSEMBLY__ */ |
| 172 | 179 | ||