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authorStefan Roese <sr@denx.de>2010-02-10 03:54:59 +0000
committerJosh Boyer <jwboyer@linux.vnet.ibm.com>2010-02-12 07:54:45 -0500
commitc7b66698122796623f1838c0ee6a8e12ec832468 (patch)
treef4f18204ba82d2d9ec74ba7896b91d823ab3a92c /arch/powerpc/mm/40x_mmu.c
parentpowerpc/44x: Add MTD support to katmai defconfig (diff)
downloadlinux-dev-c7b66698122796623f1838c0ee6a8e12ec832468.tar.xz
linux-dev-c7b66698122796623f1838c0ee6a8e12ec832468.zip
powerpc/40x: Add support for PPC40x boards with > 512MB SDRAM
This patch adds support for boards with more that 512MByte RAM. Currently only 512MB of memory are enabled in the DCCR/ICCR real-mode cache control registers. This patch now enables caching in real-mode for 2GByte. Signed-off-by: Stefan Roese <sr@denx.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Diffstat (limited to 'arch/powerpc/mm/40x_mmu.c')
-rw-r--r--arch/powerpc/mm/40x_mmu.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 08dfa8e6d86f..65abfcfaaa9e 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -84,8 +84,8 @@ void __init MMU_init_hw(void)
* vectors and the kernel live in real-mode.
*/
- mtspr(SPRN_DCCR, 0xF0000000); /* 512 MB of data space at 0x0. */
- mtspr(SPRN_ICCR, 0xF0000000); /* 512 MB of instr. space at 0x0. */
+ mtspr(SPRN_DCCR, 0xFFFF0000); /* 2GByte of data space at 0x0. */
+ mtspr(SPRN_ICCR, 0xFFFF0000); /* 2GByte of instr. space at 0x0. */
}
#define LARGE_PAGE_SIZE_16M (1<<24)