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authorMichal Simek <monstr@monstr.eu>2012-08-01 10:29:28 +0200
committerMichal Simek <monstr@monstr.eu>2012-10-04 14:52:49 +0200
commit6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2 (patch)
tree9e536194b12b6d24aa4c0679b89a670dcf07b938 /arch/microblaze
parent9f78d3b5ab97a22a7e836312c495804ee4bca4ab (diff)
downloadlinux-linaro-stable-6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2.tar.gz
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>
Diffstat (limited to 'arch/microblaze')
-rw-r--r--arch/microblaze/Kconfig7
-rw-r--r--arch/microblaze/include/asm/page.h6
-rw-r--r--arch/microblaze/kernel/hw_exception_handler.S6
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