mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-22 15:02:32 +00:00
34 lines
887 B
Diff
34 lines
887 B
Diff
--- a/arch/mips/bcm47xx/prom.c
|
|
+++ b/arch/mips/bcm47xx/prom.c
|
|
@@ -27,6 +27,7 @@
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/spinlock.h>
|
|
+#include <linux/smp.h>
|
|
#include <asm/bootinfo.h>
|
|
#include <asm/fw/cfe/cfe_api.h>
|
|
#include <asm/fw/cfe/cfe_error.h>
|
|
@@ -127,6 +128,7 @@ static __init void prom_init_mem(void)
|
|
{
|
|
unsigned long mem;
|
|
unsigned long max;
|
|
+ struct cpuinfo_mips *c = ¤t_cpu_data;
|
|
|
|
/* Figure out memory size by finding aliases.
|
|
*
|
|
@@ -155,6 +157,14 @@ 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 (c->cputype == CPU_74K && (mem == (128 << 20)))
|
|
+ mem -= 0x1000;
|
|
+
|
|
add_memory_region(0, mem, BOOT_MEM_RAM);
|
|
}
|
|
|