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 --- .../brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch | 17 +++++++++++++++++ .../brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch | 17 +++++++++++++++++ .../brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch | 17 +++++++++++++++++ 3 files changed, 51 insertions(+) create mode 100644 target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch create mode 100644 target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch create mode 100644 target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch (limited to 'target/linux/brcm47xx') diff --git a/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch b/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch new file mode 100644 index 000000000..e54e3de40 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch @@ -0,0 +1,17 @@ +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -141,6 +141,14 @@ static __init void prom_init_mem(void) + 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); + } + diff --git a/target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch b/target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch new file mode 100644 index 000000000..e54e3de40 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch @@ -0,0 +1,17 @@ +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -141,6 +141,14 @@ static __init void prom_init_mem(void) + 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); + } + diff --git a/target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch b/target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch new file mode 100644 index 000000000..e54e3de40 --- /dev/null +++ b/target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch @@ -0,0 +1,17 @@ +--- a/arch/mips/bcm47xx/prom.c ++++ b/arch/mips/bcm47xx/prom.c +@@ -141,6 +141,14 @@ static __init void prom_init_mem(void) + 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