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-rw-r--r--target/linux/ar71xx/patches-3.8/506-MIPS-ath79-prom-parse-redboot-args.patch86
1 files changed, 86 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.8/506-MIPS-ath79-prom-parse-redboot-args.patch b/target/linux/ar71xx/patches-3.8/506-MIPS-ath79-prom-parse-redboot-args.patch
new file mode 100644
index 0000000000..aab959b900
--- /dev/null
+++ b/target/linux/ar71xx/patches-3.8/506-MIPS-ath79-prom-parse-redboot-args.patch
@@ -0,0 +1,86 @@
+--- a/arch/mips/ath79/prom.c
++++ b/arch/mips/ath79/prom.c
+@@ -19,6 +19,8 @@
+
+ #include "common.h"
+
++static char ath79_cmdline_buf[COMMAND_LINE_SIZE] __initdata;
++
+ static inline int is_valid_ram_addr(void *addr)
+ {
+ if (((u32) addr > KSEG0) &&
+@@ -32,6 +34,41 @@ static inline int is_valid_ram_addr(void
+ return 0;
+ }
+
++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));
++}
++
++static const char * __init ath79_prom_find_env(char **envp, const char *name)
++{
++ const char *ret = NULL;
++ int len;
++ char **p;
++
++ if (!is_valid_ram_addr(envp))
++ return NULL;
++
++ len = strlen(name);
++ for (p = envp; is_valid_ram_addr(*p); p++) {
++ if (strncmp(name, *p, len) == 0 && (*p)[len] == '=') {
++ ret = *p + len + 1;
++ break;
++ }
++
++ /* RedBoot env comes in pointer pairs - key, value */
++ if (strncmp(name, *p, len) == 0 && (*p)[len] == 0)
++ if (is_valid_ram_addr(*(++p))) {
++ ret = *p;
++ break;
++ }
++ }
++
++ return ret;
++}
++
+ static __init void ath79_prom_init_cmdline(int argc, char **argv)
+ {
+ int i;
+@@ -48,7 +85,32 @@ static __init void ath79_prom_init_cmdli
+
+ void __init prom_init(void)
+ {
++ const char *env;
++ char **envp;
++
+ ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
++
++ envp = (char **)fw_arg2;
++ if (!strstr(arcs_cmdline, "ethaddr=")) {
++ env = ath79_prom_find_env(envp, "ethaddr");
++ if (env)
++ ath79_prom_append_cmdline("ethaddr", env);
++ }
++
++ if (!strstr(arcs_cmdline, "board=")) {
++ env = ath79_prom_find_env(envp, "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);
++ }
++ }
+ }
+
+ void __init prom_free_prom_memory(void)