target/linux/ixp4xx/patches-3.3/000-adjust_virtual_addresses.patch

   1 The current fixed physical/virtual mappings for the internal peripherals
   2 of the ixp4xx SoC devices is using a virtual address outside of the vmalloc
   3 region. This results in kernel warnings like this on the boot console:
   4
   5   BUG: mapping for 0xc8000000 at 0xffbeb000 out of vmalloc space
   6   BUG: mapping for 0xc4000000 at 0xffbfe000 out of vmalloc space
   7   BUG: mapping for 0xc0000000 at 0xffbff000 out of vmalloc space
   8
   9 The virtual kernel memory layout lists this for the vmalloc region:
  10
  11     ...
  12     vmalloc : 0xc2800000 - 0xff000000   ( 968 MB)
  13     ...
  14
  15 With a little adjustment to the virtual address used we can map these
  16 internal devices in the vmalloc region.
  17
  18 Signed-off-by: Greg Ungerer <gerg@uclinux.org>
  19
  20 ---
  21 arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h |   14 +++++++-------
  22  1 files changed, 7 insertions(+), 7 deletions(-)
  23
  24 --- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
  25 +++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
  26 @@ -32,11 +32,11 @@
  27   *
  28   * 0x6000000   0x00004000      ioremap'd       QMgr
  29   *
  30 - * 0xC0000000  0x00001000      0xffbff000      PCI CFG
  31 + * 0xC0000000  0x00001000      0xfebff000      PCI CFG
  32   *
  33 - * 0xC4000000  0x00001000      0xffbfe000      EXP CFG
  34 + * 0xC4000000  0x00001000      0xfebfe000      EXP CFG
  35   *
  36 - * 0xC8000000  0x00013000      0xffbeb000      On-Chip Peripherals
  37 + * 0xC8000000  0x00013000      0xfebeb000      On-Chip Peripherals
  38   */
  39
  40  /*
  41 @@ -49,21 +49,21 @@
  42   * Expansion BUS Configuration registers
  43   */
  44  #define IXP4XX_EXP_CFG_BASE_PHYS       (0xC4000000)
  45 -#define IXP4XX_EXP_CFG_BASE_VIRT       (0xFFBFE000)
  46 +#define IXP4XX_EXP_CFG_BASE_VIRT       (0xFEBFE000)
  47  #define IXP4XX_EXP_CFG_REGION_SIZE     (0x00001000)
  48
  49  /*
  50   * PCI Config registers
  51   */
  52  #define IXP4XX_PCI_CFG_BASE_PHYS       (0xC0000000)
  53 -#define        IXP4XX_PCI_CFG_BASE_VIRT        (0xFFBFF000)
  54 +#define        IXP4XX_PCI_CFG_BASE_VIRT        (0xFEBFF000)
  55  #define IXP4XX_PCI_CFG_REGION_SIZE     (0x00001000)
  56
  57  /*
  58   * Peripheral space
  59   */
  60  #define IXP4XX_PERIPHERAL_BASE_PHYS    (0xC8000000)
  61 -#define IXP4XX_PERIPHERAL_BASE_VIRT    (0xFFBEB000)
  62 +#define IXP4XX_PERIPHERAL_BASE_VIRT    (0xFEBEB000)
  63  #define IXP4XX_PERIPHERAL_REGION_SIZE  (0x00013000)
  64
  65  /*
  66 @@ -73,7 +73,7 @@
  67   * aligned so that it * can be used with the low-level debug code.
  68   */
  69  #define        IXP4XX_DEBUG_UART_BASE_PHYS     (0xC8000000)
  70 -#define        IXP4XX_DEBUG_UART_BASE_VIRT     (0xffb00000)
  71 +#define        IXP4XX_DEBUG_UART_BASE_VIRT     (0xfeb00000)
  72  #define        IXP4XX_DEBUG_UART_REGION_SIZE   (0x00001000)
  73
  74  #define IXP4XX_EXP_CS0_OFFSET  0x00