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diff -uprN linux-2.6.23.orig/arch/arm/mach-ixp4xx/nslu2-setup.c linux-2.6.23/arch/arm/mach-ixp4xx/nslu2-setup.c
--- linux-2.6.23.orig/arch/arm/mach-ixp4xx/nslu2-setup.c 2007-10-09 15:31:38.000000000 -0500
+++ linux-2.6.23/arch/arm/mach-ixp4xx/nslu2-setup.c 2007-10-11 01:04:46.000000000 -0500
@@ -19,6 +19,7 @@
#include <linux/serial_8250.h>
#include <linux/leds.h>
+#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
@@ -171,6 +172,35 @@ static struct sys_timer nslu2_timer = {
.init = nslu2_timer_init,
};
+static char nslu2_rtc_probe[] __initdata = "rtc-isl1208.ignore=0,0x6f rtc-x1205.probe=0,0x6f ";
+
+static void __init nslu2_fixup(struct machine_desc *desc,
+ struct tag *tags, char **cmdline, struct meminfo *mi)
+{
+ struct tag *t = tags;
+ char *p = *cmdline;
+
+ /* Find the end of the tags table, taking note of any cmdline tag. */
+ for (; t->hdr.size; t = tag_next(t)) {
+ if (t->hdr.tag == ATAG_CMDLINE) {
+ p = t->u.cmdline.cmdline;
+ }
+ }
+
+ /* Overwrite the end of the table with a new cmdline tag. */
+ t->hdr.tag = ATAG_CMDLINE;
+ t->hdr.size = (sizeof (struct tag_header) +
+ strlen(nslu2_rtc_probe) + strlen(p) + 1 + 4) >> 2;
+ strlcpy(t->u.cmdline.cmdline, nslu2_rtc_probe, COMMAND_LINE_SIZE);
+ strlcpy(t->u.cmdline.cmdline + strlen(nslu2_rtc_probe), p,
+ COMMAND_LINE_SIZE - strlen(nslu2_rtc_probe));
+
+ /* Terminate the table. */
+ t = tag_next(t);
+ t->hdr.tag = ATAG_NONE;
+ t->hdr.size = 0;
+}
+
static void __init nslu2_init(void)
{
ixp4xx_sys_init();
@@ -196,6 +226,7 @@ MACHINE_START(NSLU2, "Linksys NSLU2")
.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
.boot_params = 0x00000100,
+ .fixup = nslu2_fixup,
.map_io = ixp4xx_map_io,
.init_irq = ixp4xx_init_irq,
.timer = &nslu2_timer,
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