From 6e80cff5430efb9dc8c12cb066e12c62d0a2d9d2 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Wed, 1 Aug 2012 10:29:28 +0200 Subject: 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 --- arch/microblaze/Kconfig | 7 ++----- arch/microblaze/include/asm/page.h | 6 ++---- 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 ab9afcaa7f6..6133bed2b85 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 dd9ea9d6b76..85a5ae8e9bd 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 76a069dc13c..0a573df47ff 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 -- cgit v1.2.3-70-g09d2