diff options
| author | Michal Simek <monstr@monstr.eu> | 2012-08-01 10:29:28 +0200 |
|---|---|---|
| committer | Michal Simek <monstr@monstr.eu> | 2012-10-04 14:52:49 +0200 |
| commit | 6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2 (patch) | |
| tree | 9e536194b12b6d24aa4c0679b89a670dcf07b938 | |
| parent | 9f78d3b5ab97a22a7e836312c495804ee4bca4ab (diff) | |
| download | blackbird-obmc-linux-6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2.tar.gz blackbird-obmc-linux-6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2.zip | |
microblaze: Support 4k/16k/64k pages
Add support for page size which is supported by MMU.
Remove 8k and 32k page size because they are not supported
by MMU.
Signed-off-by: Michal Simek <monstr@monstr.eu>
| -rw-r--r-- | arch/microblaze/Kconfig | 7 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/page.h | 6 | ||||
| -rw-r--r-- | arch/microblaze/kernel/hw_exception_handler.S | 6 |
3 files changed, 10 insertions, 9 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index ab9afcaa7f6a..6133bed2b855 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -243,14 +243,11 @@ choice config MICROBLAZE_4K_PAGES bool "4k page size" -config MICROBLAZE_8K_PAGES - bool "8k page size" - config MICROBLAZE_16K_PAGES bool "16k page size" -config MICROBLAZE_32K_PAGES - bool "32k page size" +config MICROBLAZE_64K_PAGES + bool "64k page size" endchoice diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h index dd9ea9d6b765..85a5ae8e9bd0 100644 --- a/arch/microblaze/include/asm/page.h +++ b/arch/microblaze/include/asm/page.h @@ -23,12 +23,10 @@ #ifdef __KERNEL__ /* PAGE_SHIFT determines the page size */ -#if defined(CONFIG_MICROBLAZE_32K_PAGES) -#define PAGE_SHIFT 15 +#if defined(CONFIG_MICROBLAZE_64K_PAGES) +#define PAGE_SHIFT 16 #elif defined(CONFIG_MICROBLAZE_16K_PAGES) #define PAGE_SHIFT 14 -#elif defined(CONFIG_MICROBLAZE_8K_PAGES) -#define PAGE_SHIFT 13 #else #define PAGE_SHIFT 12 #endif diff --git a/arch/microblaze/kernel/hw_exception_handler.S b/arch/microblaze/kernel/hw_exception_handler.S index 76a069dc13cb..0a573df47ff8 100644 --- a/arch/microblaze/kernel/hw_exception_handler.S +++ b/arch/microblaze/kernel/hw_exception_handler.S @@ -862,7 +862,13 @@ ex_handler_done: * bits 20 and 21 are zero. */ andi r3, r3, PAGE_MASK +#ifdef CONFIG_MICROBLAZE_64K_PAGES + ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_64K) +#elif CONFIG_MICROBLAZE_16K_PAGES + ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_16K) +#else ori r3, r3, TLB_VALID | TLB_PAGESZ(PAGESZ_4K) +#endif mts rtlbhi, r3 /* Load TLB HI */ nop |
