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freifunkist-firmware/target/linux/ixp4xx/patches-4.4/162-wg302v1_mem_fixup.patch

38 lines
973 B

--- a/arch/arm/mach-ixp4xx/wg302v1-setup.c
+++ b/arch/arm/mach-ixp4xx/wg302v1-setup.c
@@ -117,6 +117,35 @@ static struct platform_device *wg302v1_d
&wg302v1_eth[0],
};
+static char wg302v1_mem_fixup[] __initdata = " mem=32M";
+
+static void __init wg302v1_fixup(struct tag *tags, char **cmdline,
+ struct meminfo *mi)
+{
+ struct tag *t = tags;
+ char *p = *cmdline;
+ size_t fixlen, cmdlen;
+
+ /* 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;
+ }
+ }
+
+ fixlen = strlen(wg302v1_mem_fixup);
+ cmdlen = strlen(p);
+ if (fixlen + cmdlen >= COMMAND_LINE_SIZE)
+ return;
+
+ /* append the fixup to the cmdline */
+ memmove(p + cmdlen, wg302v1_mem_fixup, fixlen + 1);
+
+ /* Adjust the size of the atag if there was one */
+ if (t->hdr.size)
+ t->hdr.size += fixlen;
+}
+
static void __init wg302v1_init(void)
{
ixp4xx_sys_init();