ar71xx: Add kernel 4.9 support

[openwrt/staging/lynxis.git] / target / linux / ar71xx / patches-4.9 / 506-MIPS-ath79-prom-parse-redboot-args.patch

diff --git a/target/linux/ar71xx/patches-4.9/506-MIPS-ath79-prom-parse-redboot-args.patch b/target/linux/ar71xx/patches-4.9/506-MIPS-ath79-prom-parse-redboot-args.patch
new file mode 100644 (file)
index 0000000..46beeff
--- /dev/null
+++ b/target/linux/ar71xx/patches-4.9/506-MIPS-ath79-prom-parse-redboot-args.patch
@@ -0,0 +1,42 @@
+--- a/arch/mips/ath79/prom.c
++++ b/arch/mips/ath79/prom.c
+@@ -22,10 +22,39 @@
+ 
+ #include "common.h"
+ 
++static char ath79_cmdline_buf[COMMAND_LINE_SIZE] __initdata;
++
++static void __init ath79_prom_append_cmdline(const char *name,
++                                            const char *value)
++{
++      snprintf(ath79_cmdline_buf, sizeof(ath79_cmdline_buf),
++               " %s=%s", name, value);
++      strlcat(arcs_cmdline, ath79_cmdline_buf, sizeof(arcs_cmdline));
++}
++
+ void __init prom_init(void)
+ {
++      const char *env;
++
+       fw_init_cmdline();
+ 
++      env = fw_getenv("ethaddr");
++      if (env)
++              ath79_prom_append_cmdline("ethaddr", env);
++
++      env = fw_getenv("board");
++      if (env) {
++              /* Workaround for buggy bootloaders */
++              if (strcmp(env, "RouterStation") == 0 ||
++                  strcmp(env, "Ubiquiti AR71xx-based board") == 0)
++                      env = "UBNT-RS";
++
++              if (strcmp(env, "RouterStation PRO") == 0)
++                      env = "UBNT-RSPRO";
++
++              ath79_prom_append_cmdline("board", env);
++      }
++
+ #ifdef CONFIG_BLK_DEV_INITRD
+       /* Read the initrd address from the firmware environment */
+       initrd_start = fw_getenvl("initrd_start");