From 3fb97947af0248bba15050c336496f6dace4ff2d Mon Sep 17 00:00:00 2001 From: hauke Date: Fri, 13 Nov 2009 20:32:47 +0000 Subject: [brcm47xx] fix problem with 128MB ram. This patch is out of broadcoms official source code git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18413 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'target/linux/brcm-2.4/files/arch/mips') diff --git a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c index be628da62..f635b4a6c 100644 --- a/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c +++ b/target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c @@ -31,6 +31,15 @@ prom_init(int argc, const char **argv) *(unsigned long *)(prom_init)) break; } + + /* Ignoring the last page when ddr size is 128M. Cached + * accesses to last page is causing the processor to prefetch + * using address above 128M stepping out of the ddr address + * space. + */ + if (mem == 0x8000000) + mem -= 0x1000; + add_memory_region(0, mem, BOOT_MEM_RAM); } -- cgit v1.2.3