summaryrefslogtreecommitdiff
path: root/target
diff options
context:
space:
mode:
authorHauke Mehrtens <hauke@hauke-m.de>2009-11-13 20:32:47 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2009-11-13 20:32:47 +0000
commit30f859403a53ea5d51867065408a379acea6f1b4 (patch)
tree9897294142072297dba5535062c20b7b90bde5bd /target
parent00808aaff32e58946f5da370068fd875aa3ae5c8 (diff)
downloadmtk-20170518-30f859403a53ea5d51867065408a379acea6f1b4.zip
mtk-20170518-30f859403a53ea5d51867065408a379acea6f1b4.tar.gz
mtk-20170518-30f859403a53ea5d51867065408a379acea6f1b4.tar.bz2
fix problem with 128MB ram.
This patch is out of broadcoms official source code SVN-Revision: 18413
Diffstat (limited to 'target')
-rw-r--r--target/linux/brcm-2.4/files/arch/mips/bcm947xx/prom.c9
-rw-r--r--target/linux/brcm47xx/patches-2.6.28/170-128MB_ram_bugfix.patch17
-rw-r--r--target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch17
-rw-r--r--target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch17
4 files changed, 60 insertions, 0 deletions
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 be628da..f635b4a 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);
}
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 0000000..e54e3de
--- /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 0000000..e54e3de
--- /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 0000000..e54e3de
--- /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);
+ }
+