target/linux/ixp4xx/patches/186-nas100d_rtc_fixup.patch

   1 Index: linux-2.6.21.7/arch/arm/mach-ixp4xx/nas100d-setup.c
   2 ===================================================================
   3 --- linux-2.6.21.7.orig/arch/arm/mach-ixp4xx/nas100d-setup.c
   4 +++ linux-2.6.21.7/arch/arm/mach-ixp4xx/nas100d-setup.c
   5 @@ -18,6 +18,7 @@
   6  #include <linux/leds.h>
   7  #include <linux/mtd/mtd.h>
   8
   9 +#include <asm/setup.h>
  10  #include <asm/mach-types.h>
  11  #include <asm/mach/arch.h>
  12  #include <asm/mach/flash.h>
  13 @@ -227,11 +228,42 @@ static void __init nas100d_init(void)
  14         register_mtd_user(&nas100d_flash_notifier);
  15  }
  16
  17 +static char nas100d_rtc_probe[] __initdata = "rtc-pcf8563.probe=0,0x51 ";
  18 +
  19 +static void __init nas100d_fixup(struct machine_desc *desc,
  20 +               struct tag *tags, char **cmdline, struct meminfo *mi)
  21 +{
  22 +       struct tag *t = tags;
  23 +       char *p = *cmdline;
  24 +
  25 +       /* Find the end of the tags table, taking note of any cmdline tag. */
  26 +       for (; t->hdr.size; t = tag_next(t)) {
  27 +               if (t->hdr.tag == ATAG_CMDLINE) {
  28 +                       p = t->u.cmdline.cmdline;
  29 +               }
  30 +       }
  31 +
  32 +       /* Overwrite the end of the table with a new cmdline tag. */
  33 +       t->hdr.tag = ATAG_CMDLINE;
  34 +       t->hdr.size =
  35 +               (sizeof (struct tag_header) +
  36 +                strlen(nas100d_rtc_probe) + strlen(p) + 1 + 4) >> 2;
  37 +       strlcpy(t->u.cmdline.cmdline, nas100d_rtc_probe, COMMAND_LINE_SIZE);
  38 +       strlcpy(t->u.cmdline.cmdline + strlen(nas100d_rtc_probe), p,
  39 +               COMMAND_LINE_SIZE - strlen(nas100d_rtc_probe));
  40 +
  41 +       /* Terminate the table. */
  42 +       t = tag_next(t);
  43 +       t->hdr.tag = ATAG_NONE;
  44 +       t->hdr.size = 0;
  45 +}
  46 +
  47  MACHINE_START(NAS100D, "Iomega NAS 100d")
  48         /* Maintainer: www.nslu2-linux.org */
  49         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
  50         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
  51         .boot_params    = 0x00000100,
  52 +       .fixup          = nas100d_fixup,
  53         .map_io         = ixp4xx_map_io,
  54         .init_irq       = ixp4xx_init_irq,
  55         .timer          = &ixp4xx_timer,