diff -uprN linux-2.6.23.orig/arch/arm/mach-ixp4xx/avila-setup.c linux-2.6.23/arch/arm/mach-ixp4xx/avila-setup.c
--- linux-2.6.23.orig/arch/arm/mach-ixp4xx/avila-setup.c	2007-10-09 15:31:38.000000000 -0500
+++ linux-2.6.23/arch/arm/mach-ixp4xx/avila-setup.c	2007-10-11 01:08:21.000000000 -0500
@@ -138,6 +138,35 @@ static struct platform_device *avila_dev
 	&avila_uart
 };
 
+static char avila_rtc_probe[] __initdata = "rtc-ds1672.probe=0,0x68 ";
+
+static void __init avila_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(avila_rtc_probe) + strlen(p) + 1 + 4) >> 2;
+    strlcpy(t->u.cmdline.cmdline, avila_rtc_probe, COMMAND_LINE_SIZE);
+    strlcpy(t->u.cmdline.cmdline + strlen(avila_rtc_probe), p,
+        COMMAND_LINE_SIZE - strlen(avila_rtc_probe));
+
+    /* Terminate the table. */
+    t = tag_next(t);
+    t->hdr.tag = ATAG_NONE;
+    t->hdr.size = 0;
+}
+
 static void __init avila_init(void)
 {
 	ixp4xx_sys_init();
@@ -165,6 +194,7 @@ MACHINE_START(AVILA, "Gateworks Avila Ne
 	/* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
 	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
 	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+	.fixup          = avila_fixup,
 	.map_io		= ixp4xx_map_io,
 	.init_irq	= ixp4xx_init_irq,
 	.timer		= &ixp4xx_timer,
@@ -182,6 +212,7 @@ MACHINE_START(LOFT, "Giant Shoulder Inc 
 	/* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
 	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
 	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+	.fixup          = avila_fixup,
 	.map_io		= ixp4xx_map_io,
 	.init_irq	= ixp4xx_init_irq,
 	.timer		= &ixp4xx_timer,