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[ixp4xx]: move fixed mapping of internal devices into vmalloc region

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34158 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
kaloz 2012-11-11 19:29:27 +00:00
parent 6054f4542f
commit 06e73c8149
1 changed files with 76 additions and 0 deletions
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76
target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch Normal file
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@ -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