ixp4xx: add linux 4.1 support
[openwrt/openwrt.git] / target / linux / ixp4xx / patches-4.1 / 162-wg302v1_mem_fixup.patch
1 --- a/arch/arm/mach-ixp4xx/wg302v1-setup.c
2 +++ b/arch/arm/mach-ixp4xx/wg302v1-setup.c
3 @@ -117,6 +117,35 @@ static struct platform_device *wg302v1_d
4 &wg302v1_eth[0],
5 };
6
7 +static char wg302v1_mem_fixup[] __initdata = " mem=32M";
8 +
9 +static void __init wg302v1_fixup(struct tag *tags, char **cmdline,
10 + struct meminfo *mi)
11 +{
12 + struct tag *t = tags;
13 + char *p = *cmdline;
14 + size_t fixlen, cmdlen;
15 +
16 + /* Find the end of the tags table, taking note of any cmdline tag. */
17 + for (; t->hdr.size; t = tag_next(t)) {
18 + if (t->hdr.tag == ATAG_CMDLINE) {
19 + p = t->u.cmdline.cmdline;
20 + }
21 + }
22 +
23 + fixlen = strlen(wg302v1_mem_fixup);
24 + cmdlen = strlen(p);
25 + if (fixlen + cmdlen >= COMMAND_LINE_SIZE)
26 + return;
27 +
28 + /* append the fixup to the cmdline */
29 + memmove(p + cmdlen, wg302v1_mem_fixup, fixlen + 1);
30 +
31 + /* Adjust the size of the atag if there was one */
32 + if (t->hdr.size)
33 + t->hdr.size += fixlen;
34 +}
35 +
36 static void __init wg302v1_init(void)
37 {
38 ixp4xx_sys_init();