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openwrt-xburst/target/linux/ixp4xx/patches-2.6.28/162-wg302v1_mem_fixup.patch
kaloz ba0bfea873 preliminary ixp4xx 2.6.28 support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13548 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-12-08 14:46:04 +00:00

48 lines
1.4 KiB
Diff

--- a/arch/arm/mach-ixp4xx/wg302v1-setup.c
+++ b/arch/arm/mach-ixp4xx/wg302v1-setup.c
@@ -115,6 +115,36 @@ static struct platform_device *wg302v1_d
&wg302v1_eth[0],
};
+static char wg302v1_mem_fixup[] __initdata = "mem=32M ";
+
+static void __init wg302v1_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(wg302v1_mem_fixup) + strlen(p) + 1 + 4) >> 2;
+ strlcpy(t->u.cmdline.cmdline, wg302v1_mem_fixup, COMMAND_LINE_SIZE);
+ strlcpy(t->u.cmdline.cmdline + strlen(wg302v1_mem_fixup), p,
+ COMMAND_LINE_SIZE - strlen(wg302v1_mem_fixup));
+
+ /* Terminate the table. */
+ t = tag_next(t);
+ t->hdr.tag = ATAG_NONE;
+ t->hdr.size = 0;
+}
+
static void __init wg302v1_init(void)
{
ixp4xx_sys_init();
@@ -133,6 +163,7 @@ MACHINE_START(WG302V1, "Netgear WG302 v1
/* Maintainer: Imre Kaloz <kaloz@openwrt.org> */
.phys_io = IXP4XX_PERIPHERAL_BASE_PHYS,
.io_pg_offst = ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+ .fixup = wg302v1_fixup,
.map_io = ixp4xx_map_io,
.init_irq = ixp4xx_init_irq,
.timer = &ixp4xx_timer,