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authorHauke Mehrtens <hauke@hauke-m.de>2010-03-08 22:03:00 +0000
committerHauke Mehrtens <hauke@hauke-m.de>2010-03-08 22:03:00 +0000
commit3f0dc5c30fa136abfd5356c11d629030fdf23807 (patch)
treed1263332928f217d955a87fc1b65b4770ed6ee39 /target/linux/brcm47xx/patches-2.6.32
parentc0b9c9d4a9f75bd1d0694608b102e6fdf13b1b74 (diff)
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brcm47xx: fix commit r18413 "128MB ram problem"
The patch commited in r18413 was wrong. This patch prevents prom_init_mem from scanning over 128MB ram. This is from #6765 and #3177 Refresh all patches SVN-Revision: 20072
Diffstat (limited to 'target/linux/brcm47xx/patches-2.6.32')
-rw-r--r--target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch43
-rw-r--r--target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch9
-rw-r--r--target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch2
3 files changed, 32 insertions, 22 deletions
diff --git a/target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch b/target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch
index e54e3de409..93f4b1f101 100644
--- a/target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch
+++ b/target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch
@@ -1,17 +1,32 @@
--- 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);
- }
+@@ -126,6 +126,7 @@ static __init void prom_init_cmdline(voi
+ static __init void prom_init_mem(void)
+ {
+ unsigned long mem;
++ unsigned long max;
+ /* Figure out memory size by finding aliases.
+ *
+@@ -134,8 +135,21 @@ static __init void prom_init_mem(void)
+ * want to reuse the memory used by CFE (around 4MB). That means cfe_*
+ * functions stop to work at some point during the boot, we should only
+ * call them at the beginning of the boot.
++ *
++ * BCM47XX uses 128MB for addressing the ram, if the system contains
++ * less that that amount of ram it remaps the ram more often into the
++ * available space.
++ * Accessing memory after 128MB will cause an exception.
++ * max contains the biggest possible address supported by the platform.
++ * If the method wants to try something above we assume 128MB ram.
+ */
++ max = ((unsigned long)(prom_init) | ((128 << 20) - 1));
+ for (mem = (1 << 20); mem < (128 << 20); mem += (1 << 20)) {
++ if (((unsigned long)(prom_init) + mem) > max) {
++ mem = (128 << 20);
++ printk("assume 128MB RAM\n");
++ break;
++ }
+ if (*(unsigned long *)((unsigned long)(prom_init) + mem) ==
+ *(unsigned long *)(prom_init))
+ break;
diff --git a/target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch b/target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch
index eb583c523a..d89531cda1 100644
--- a/target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch
+++ b/target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch
@@ -13,11 +13,9 @@ Signed-off-by: John W. Linville <linville@tuxdriver.com>
drivers/ssb/driver_mipscore.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
-diff --git a/drivers/ssb/driver_mipscore.c b/drivers/ssb/driver_mipscore.c
-index 3c6feed..97efce1 100644
--- a/drivers/ssb/driver_mipscore.c
+++ b/drivers/ssb/driver_mipscore.c
-@@ -270,7 +270,6 @@ void ssb_mipscore_init(struct ssb_mipscore *mcore)
+@@ -270,7 +270,6 @@ void ssb_mipscore_init(struct ssb_mipsco
set_irq(dev, irq++);
}
break;
@@ -25,7 +23,7 @@ index 3c6feed..97efce1 100644
case SSB_DEV_PCI:
case SSB_DEV_ETHERNET:
case SSB_DEV_ETHERNET_GBIT:
-@@ -281,6 +280,10 @@ void ssb_mipscore_init(struct ssb_mipscore *mcore)
+@@ -281,6 +280,10 @@ void ssb_mipscore_init(struct ssb_mipsco
set_irq(dev, irq++);
break;
}
@@ -36,6 +34,3 @@ index 3c6feed..97efce1 100644
}
}
ssb_dprintk(KERN_INFO PFX "after irq reconfiguration\n");
---
-1.7.0
-
diff --git a/target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch b/target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch
index a8a14105e7..a9dc7c46bb 100644
--- a/target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch
+++ b/target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch
@@ -90,7 +90,7 @@
{
static char buf[CL_SIZE] __initdata;
-@@ -154,9 +130,12 @@ static __init void prom_init_mem(void)
+@@ -160,9 +136,12 @@ static __init void prom_init_mem(void)
void __init prom_init(void)
{