root/trunk/patches/2.6.22/95-dsmg600-rtc-fixup.patch

arch/arm/mach-ixp4xx/dsmg600-setup.c

@@ -16 +16 @@
 #include <linux/serial_8250.h>
 #include <linux/i2c-gpio.h>
 
+#include <asm/setup.h>
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>
@@ -145 +146 @@
     .init   = dsmg600_timer_init,
 };
 
+static char dsmg600_rtc_probe[] __initdata = "rtc-pcf8563.probe=0,0x51 ";
+
+static void __init dsmg600_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(dsmg600_rtc_probe) + strlen(p) + 1 + 4) >> 2;
+    strlcpy(t->u.cmdline.cmdline, dsmg600_rtc_probe, COMMAND_LINE_SIZE);
+    strlcpy(t->u.cmdline.cmdline + strlen(dsmg600_rtc_probe), p,
+        COMMAND_LINE_SIZE - strlen(dsmg600_rtc_probe));
+
+    /* Terminate the table. */
+    t = tag_next(t);
+    t->hdr.tag = ATAG_NONE;
+    t->hdr.size = 0;
+}
+
 static void __init dsmg600_init(void)
 {
         ixp4xx_sys_init();
@@ -177 +207 @@
         .phys_io        = IXP4XX_PERIPHERAL_BASE_PHYS,
         .io_pg_offst    = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xFFFC,
         .boot_params    = 0x00000100,
+        .fixup          = dsmg600_fixup,
         .map_io         = ixp4xx_map_io,
         .init_irq       = ixp4xx_init_irq,
         .timer          = &dsmg600_timer,