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-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 be628da625..f635b4a6c6 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 0000000000..e54e3de409
--- /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 0000000000..e54e3de409
--- /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 0000000000..e54e3de409
--- /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);
+ }
+