target/linux/ixp4xx/patches/070-ixp4xx_freq_fixup.patch

   1 This patch is required as the frequency fixup in nslu2_init does not
   2 run sufficiently early in the boot sequence to take effect. In
   3 addition the dsmg600 setup code behaviour has been improved such
   4 that a 'fixup' routine is avoided.
   5
   6 Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
   7
   8 Index: linux-2.6.21.7/arch/arm/mach-ixp4xx/nslu2-setup.c
   9 ===================================================================
  10 --- linux-2.6.21.7.orig/arch/arm/mach-ixp4xx/nslu2-setup.c
  11 +++ linux-2.6.21.7/arch/arm/mach-ixp4xx/nslu2-setup.c
  12 @@ -22,6 +22,7 @@
  13  #include <asm/mach-types.h>
  14  #include <asm/mach/arch.h>
  15  #include <asm/mach/flash.h>
  16 +#include <asm/mach/time.h>
  17
  18  static struct flash_platform_data nslu2_flash_data = {
  19         .map_name               = "cfi_probe",
  20 @@ -157,10 +158,21 @@ static void nslu2_power_off(void)
  21         gpio_line_set(NSLU2_PO_GPIO, IXP4XX_GPIO_HIGH);
  22  }
  23
  24 -static void __init nslu2_init(void)
  25 +static void __init nslu2_timer_init(void)
  26  {
  27 -       ixp4xx_timer_freq = NSLU2_FREQ;
  28 +    /* The xtal on this machine is non-standard. */
  29 +    ixp4xx_timer_freq = NSLU2_FREQ;
  30 +
  31 +    /* Call standard timer_init function. */
  32 +    ixp4xx_timer_init();
  33 +}
  34
  35 +static struct sys_timer nslu2_timer = {
  36 +    .init   = nslu2_timer_init,
  37 +};
  38 +
  39 +static void __init nslu2_init(void)
  40 +{
  41         ixp4xx_sys_init();
  42
  43         nslu2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
  44 @@ -185,6 +197,6 @@ MACHINE_START(NSLU2, "Linksys NSLU2")
  45         .boot_params    = 0x00000100,
  46         .map_io         = ixp4xx_map_io,
  47         .init_irq       = ixp4xx_init_irq,
  48 -       .timer          = &ixp4xx_timer,
  49 +       .timer          = &nslu2_timer,
  50         .init_machine   = nslu2_init,
  51  MACHINE_END
  52 Index: linux-2.6.21.7/arch/arm/mach-ixp4xx/common.c
  53 ===================================================================
  54 --- linux-2.6.21.7.orig/arch/arm/mach-ixp4xx/common.c
  55 +++ linux-2.6.21.7/arch/arm/mach-ixp4xx/common.c
  56 @@ -269,7 +269,7 @@ static struct irqaction ixp4xx_timer_irq
  57         .handler        = ixp4xx_timer_interrupt,
  58  };
  59
  60 -static void __init ixp4xx_timer_init(void)
  61 +void __init ixp4xx_timer_init(void)
  62  {
  63         /* Clear Pending Interrupt by writing '1' to it */
  64         *IXP4XX_OSST = IXP4XX_OSST_TIMER_1_PEND;
  65 Index: linux-2.6.21.7/include/asm-arm/arch-ixp4xx/platform.h
  66 ===================================================================
  67 --- linux-2.6.21.7.orig/include/asm-arm/arch-ixp4xx/platform.h
  68 +++ linux-2.6.21.7/include/asm-arm/arch-ixp4xx/platform.h
  69 @@ -113,6 +113,7 @@ extern unsigned long ixp4xx_timer_freq;
  70  extern void ixp4xx_map_io(void);
  71  extern void ixp4xx_init_irq(void);
  72  extern void ixp4xx_sys_init(void);
  73 +extern void ixp4xx_timer_init(void);
  74  extern struct sys_timer ixp4xx_timer;
  75  extern void ixp4xx_pci_preinit(void);
  76  struct pci_sys_data;
  77 Index: linux-2.6.21.7/arch/arm/mach-ixp4xx/dsmg600-setup.c
  78 ===================================================================
  79 --- linux-2.6.21.7.orig/arch/arm/mach-ixp4xx/dsmg600-setup.c
  80 +++ linux-2.6.21.7/arch/arm/mach-ixp4xx/dsmg600-setup.c
  81 @@ -18,6 +18,7 @@
  82  #include <asm/mach-types.h>
  83  #include <asm/mach/arch.h>
  84  #include <asm/mach/flash.h>
  85 +#include <asm/mach/time.h>
  86
  87  static struct flash_platform_data dsmg600_flash_data = {
  88         .map_name               = "cfi_probe",
  89 @@ -128,6 +129,19 @@ static void dsmg600_power_off(void)
  90         gpio_line_set(DSMG600_PO_GPIO, IXP4XX_GPIO_HIGH);
  91  }
  92
  93 +static void __init dsmg600_timer_init(void)
  94 +{
  95 +    /* The xtal on this machine is non-standard. */
  96 +    ixp4xx_timer_freq = DSMG600_FREQ;
  97 +
  98 +    /* Call standard timer_init function. */
  99 +    ixp4xx_timer_init();
 100 +}
 101 +
 102 +static struct sys_timer dsmg600_timer = {
 103 +    .init   = dsmg600_timer_init,
 104 +};
 105 +
 106  static void __init dsmg600_init(void)
 107  {
 108         ixp4xx_sys_init();
 109 @@ -155,21 +169,13 @@ static void __init dsmg600_init(void)
 110  #endif
 111  }
 112
 113 -static void __init dsmg600_fixup(struct machine_desc *desc,
 114 -                struct tag *tags, char **cmdline, struct meminfo *mi)
 115 -{
 116 -       /* The xtal on this machine is non-standard. */
 117 -        ixp4xx_timer_freq = DSMG600_FREQ;
 118 -}
 119 -
 120  MACHINE_START(DSMG600, "D-Link DSM-G600 RevA")
 121         /* Maintainer: www.nslu2-linux.org */
 122         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
 123         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
 124         .boot_params    = 0x00000100,
 125 -       .fixup          = dsmg600_fixup,
 126         .map_io         = ixp4xx_map_io,
 127         .init_irq       = ixp4xx_init_irq,
 128 -       .timer          = &ixp4xx_timer,
 129 +       .timer          = &dsmg600_timer,
 130         .init_machine   = dsmg600_init,
 131  MACHINE_END