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authorImre Kaloz <kaloz@openwrt.org>2012-11-11 19:29:27 +0000
committerImre Kaloz <kaloz@openwrt.org>2012-11-11 19:29:27 +0000
commit4658e463d932b5cea49eaea55f0d9d7b959a74bc (patch)
treed83ab0d80cf04865fb68deab6f470c8e59bce23e
parent9760644af4c6ec953c5ef7861e45f52b20422486 (diff)
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move fixed mapping of internal devices into vmalloc region
SVN-Revision: 34158
-rw-r--r--target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch76
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch b/target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch
new file mode 100644
index 0000000..883b734
--- /dev/null
+++ b/target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch
@@ -0,0 +1,76 @@
+The current fixed physical/virtual mappings for the internal peripherals
+of the ixp4xx SoC devices is using a virtual address outside of the vmalloc
+region. This results in kernel warnings like this on the boot console:
+
+ BUG: mapping for 0xc8000000 at 0xffbeb000 out of vmalloc space
+ BUG: mapping for 0xc4000000 at 0xffbfe000 out of vmalloc space
+ BUG: mapping for 0xc0000000 at 0xffbff000 out of vmalloc space
+
+The virtual kernel memory layout lists this for the vmalloc region:
+
+ ...
+ vmalloc : 0xc2800000 - 0xff000000 ( 968 MB)
+ ...
+
+With a little adjustment to the virtual address used we can map these
+internal devices in the vmalloc region.
+
+Signed-off-by: Greg Ungerer <gerg@uclinux.org>
+
+---
+arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h | 14 +++++++-------
+ 1 files changed, 7 insertions(+), 7 deletions(-)
+
+diff --git a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
+index 97c530f..ad66605 100644
+--- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
++++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
+@@ -32,11 +32,11 @@
+ *
+ * 0x6000000 0x00004000 ioremap'd QMgr
+ *
+- * 0xC0000000 0x00001000 0xffbff000 PCI CFG
++ * 0xC0000000 0x00001000 0xfebff000 PCI CFG
+ *
+- * 0xC4000000 0x00001000 0xffbfe000 EXP CFG
++ * 0xC4000000 0x00001000 0xfebfe000 EXP CFG
+ *
+- * 0xC8000000 0x00013000 0xffbeb000 On-Chip Peripherals
++ * 0xC8000000 0x00013000 0xfebeb000 On-Chip Peripherals
+ */
+
+ /*
+@@ -49,21 +49,21 @@
+ * Expansion BUS Configuration registers
+ */
+ #define IXP4XX_EXP_CFG_BASE_PHYS (0xC4000000)
+-#define IXP4XX_EXP_CFG_BASE_VIRT (0xFFBFE000)
++#define IXP4XX_EXP_CFG_BASE_VIRT (0xFEBFE000)
+ #define IXP4XX_EXP_CFG_REGION_SIZE (0x00001000)
+
+ /*
+ * PCI Config registers
+ */
+ #define IXP4XX_PCI_CFG_BASE_PHYS (0xC0000000)
+-#define IXP4XX_PCI_CFG_BASE_VIRT (0xFFBFF000)
++#define IXP4XX_PCI_CFG_BASE_VIRT (0xFEBFF000)
+ #define IXP4XX_PCI_CFG_REGION_SIZE (0x00001000)
+
+ /*
+ * Peripheral space
+ */
+ #define IXP4XX_PERIPHERAL_BASE_PHYS (0xC8000000)
+-#define IXP4XX_PERIPHERAL_BASE_VIRT (0xFFBEB000)
++#define IXP4XX_PERIPHERAL_BASE_VIRT (0xFEBEB000)
+ #define IXP4XX_PERIPHERAL_REGION_SIZE (0x00013000)
+
+ /*
+@@ -73,7 +73,7 @@
+ * aligned so that it * can be used with the low-level debug code.
+ */
+ #define IXP4XX_DEBUG_UART_BASE_PHYS (0xC8000000)
+-#define IXP4XX_DEBUG_UART_BASE_VIRT (0xffb00000)
++#define IXP4XX_DEBUG_UART_BASE_VIRT (0xfeb00000)
+ #define IXP4XX_DEBUG_UART_REGION_SIZE (0x00001000)
+
+ #define IXP4XX_EXP_CS0_OFFSET 0x00