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brcm47xx: fix commit r18413 "128MB ram problem"

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The patch commited in r18413 was wrong.
This patch prevents prom_init_mem from scanning over 128MB ram.
This is from #6765 and #3177

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SVN-Revision: 20072
v19.07.3_mercusys_ac12_duma
Hauke Mehrtens 15 years ago
parent c0b9c9d4a9
commit 3f0dc5c30f
11 changed files with 146 additions and 61 deletions
Show Stats Download Patch File Download Diff File

43
target/linux/brcm47xx/patches-2.6.30/170-128MB_ram_bugfix.patch
Unescape Escape View File

@ -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;

8
target/linux/brcm47xx/patches-2.6.30/700-ssb-gigabit-ethernet-driver.patch
Unescape Escape View File

@ -252,7 +252,7 @@
if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) {
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
~GRC_LCLCTRL_GPIO_OUTPUT1);
@@ -12099,6 +12168,11 @@ static int __devinit tg3_get_invariants(
@@ -12099,6 +12169,11 @@ static int __devinit tg3_get_invariants(
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)))
tp->tg3_flags |= TG3_FLAG_SRAM_USE_CONFIG;
@ -264,7 +264,7 @@
/* Get eeprom hw config before calling tg3_set_power_state().
* In particular, the TG3_FLG2_IS_NIC flag must be
* determined before calling tg3_set_power_state() so that
@@ -12474,6 +12548,10 @@ static int __devinit tg3_get_device_addr
@@ -12474,6 +12549,10 @@ static int __devinit tg3_get_device_addr
}
if (!is_valid_ether_addr(&dev->dev_addr[0])) {
@ -275,7 +275,7 @@
#ifdef CONFIG_SPARC
if (!tg3_get_default_macaddr_sparc(tp))
return 0;
@@ -12965,6 +13043,7 @@ static char * __devinit tg3_phy_string(s
@@ -12965,6 +13044,7 @@ static char * __devinit tg3_phy_string(s
case PHY_ID_BCM5704: return "5704";
case PHY_ID_BCM5705: return "5705";
case PHY_ID_BCM5750: return "5750";
@ -283,7 +283,7 @@
case PHY_ID_BCM5752: return "5752";
case PHY_ID_BCM5714: return "5714";
case PHY_ID_BCM5780: return "5780";
@@ -13175,6 +13254,13 @@ static int __devinit tg3_init_one(struct
@@ -13175,6 +13255,13 @@ static int __devinit tg3_init_one(struct
tp->msg_enable = tg3_debug;
else
tp->msg_enable = TG3_DEF_MSG_ENABLE;

2
target/linux/brcm47xx/patches-2.6.30/800-fix_cfe_detection.patch
Unescape Escape View File

@ -90,7 +90,7 @@
{
char buf[CL_SIZE];
@@ -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)
{

43
target/linux/brcm47xx/patches-2.6.31/170-128MB_ram_bugfix.patch
Unescape Escape View File

@ -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;

8
target/linux/brcm47xx/patches-2.6.31/700-ssb-gigabit-ethernet-driver.patch
Unescape Escape View File

@ -252,7 +252,7 @@
if (tp->tg3_flags & TG3_FLAG_EEPROM_WRITE_PROT) {
tw32_f(GRC_LOCAL_CTRL, tp->grc_local_ctrl &
~GRC_LCLCTRL_GPIO_OUTPUT1);
@@ -12136,6 +12205,11 @@ static int __devinit tg3_get_invariants(
@@ -12136,6 +12206,11 @@ static int __devinit tg3_get_invariants(
GET_ASIC_REV(tp->pci_chip_rev_id) == ASIC_REV_5701)))
tp->tg3_flags |= TG3_FLAG_SRAM_USE_CONFIG;
@ -264,7 +264,7 @@
/* Get eeprom hw config before calling tg3_set_power_state().
* In particular, the TG3_FLG2_IS_NIC flag must be
* determined before calling tg3_set_power_state() so that
@@ -12513,6 +12587,10 @@ static int __devinit tg3_get_device_addr
@@ -12513,6 +12588,10 @@ static int __devinit tg3_get_device_addr
}
if (!is_valid_ether_addr(&dev->dev_addr[0])) {
@ -275,7 +275,7 @@
#ifdef CONFIG_SPARC
if (!tg3_get_default_macaddr_sparc(tp))
return 0;
@@ -13004,6 +13082,7 @@ static char * __devinit tg3_phy_string(s
@@ -13004,6 +13083,7 @@ static char * __devinit tg3_phy_string(s
case PHY_ID_BCM5704: return "5704";
case PHY_ID_BCM5705: return "5705";
case PHY_ID_BCM5750: return "5750";
@ -283,7 +283,7 @@
case PHY_ID_BCM5752: return "5752";
case PHY_ID_BCM5714: return "5714";
case PHY_ID_BCM5780: return "5780";
@@ -13214,6 +13293,13 @@ static int __devinit tg3_init_one(struct
@@ -13214,6 +13294,13 @@ static int __devinit tg3_init_one(struct
tp->msg_enable = tg3_debug;
else
tp->msg_enable = TG3_DEF_MSG_ENABLE;

2
target/linux/brcm47xx/patches-2.6.31/800-fix_cfe_detection.patch
Unescape Escape View File

@ -90,7 +90,7 @@
{
char buf[CL_SIZE];
@@ -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)
{

43
target/linux/brcm47xx/patches-2.6.32/170-128MB_ram_bugfix.patch
Unescape Escape View File

@ -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;

9
target/linux/brcm47xx/patches-2.6.32/180-ssb_extif_interrupt.patch
Unescape Escape View File

@ -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

2
target/linux/brcm47xx/patches-2.6.32/800-fix_cfe_detection.patch
Unescape Escape View File

@ -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)
{

45
target/linux/brcm47xx/patches-2.6.33/170-128MB_ram_bugfix.patch
Unescape Escape View File

@ -0,0 +1,45 @@
--- a/arch/mips/bcm47xx/prom.c
+++ b/arch/mips/bcm47xx/prom.c
@@ -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.
*
@@ -134,21 +135,26 @@ 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;
}
- /* 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);
}

2
target/linux/brcm47xx/patches-2.6.33/800-fix_cfe_detection.patch
Unescape Escape View File

@ -90,7 +90,7 @@
{
static char buf[COMMAND_LINE_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)
{

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