mirror of
https://github.com/openwrt/openwrt.git
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87 lines
2.0 KiB
Diff
87 lines
2.0 KiB
Diff
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--- a/arch/mips/ath79/prom.c
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+++ b/arch/mips/ath79/prom.c
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@@ -19,6 +19,8 @@
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#include "common.h"
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+static char ath79_cmdline_buf[COMMAND_LINE_SIZE] __initdata;
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+
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static inline int is_valid_ram_addr(void *addr)
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{
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if (((u32) addr > KSEG0) &&
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@@ -32,6 +34,41 @@ static inline int is_valid_ram_addr(void
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return 0;
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}
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+static void __init ath79_prom_append_cmdline(const char *name,
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+ const char *value)
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+{
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+ snprintf(ath79_cmdline_buf, sizeof(ath79_cmdline_buf),
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+ " %s=%s", name, value);
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+ strlcat(arcs_cmdline, ath79_cmdline_buf, sizeof(arcs_cmdline));
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+}
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+
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+static const char * __init ath79_prom_find_env(char **envp, const char *name)
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+{
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+ const char *ret = NULL;
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+ int len;
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+ char **p;
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+
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+ if (!is_valid_ram_addr(envp))
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+ return NULL;
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+
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+ len = strlen(name);
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+ for (p = envp; is_valid_ram_addr(*p); p++) {
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+ if (strncmp(name, *p, len) == 0 && (*p)[len] == '=') {
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+ ret = *p + len + 1;
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+ break;
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+ }
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+
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+ /* RedBoot env comes in pointer pairs - key, value */
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+ if (strncmp(name, *p, len) == 0 && (*p)[len] == 0)
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+ if (is_valid_ram_addr(*(++p))) {
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+ ret = *p;
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+ break;
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+ }
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+ }
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+
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+ return ret;
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+}
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+
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static __init void ath79_prom_init_cmdline(int argc, char **argv)
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{
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int i;
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@@ -48,7 +85,32 @@ static __init void ath79_prom_init_cmdli
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void __init prom_init(void)
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{
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+ const char *env;
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+ char **envp;
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+
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ath79_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
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+
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+ envp = (char **)fw_arg2;
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+ if (!strstr(arcs_cmdline, "ethaddr=")) {
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+ env = ath79_prom_find_env(envp, "ethaddr");
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+ if (env)
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+ ath79_prom_append_cmdline("ethaddr", env);
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+ }
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+
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+ if (!strstr(arcs_cmdline, "board=")) {
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+ env = ath79_prom_find_env(envp, "board");
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+ if (env) {
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+ /* Workaround for buggy bootloaders */
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+ if (strcmp(env, "RouterStation") == 0 ||
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+ strcmp(env, "Ubiquiti AR71xx-based board") == 0)
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+ env = "UBNT-RS";
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+
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+ if (strcmp(env, "RouterStation PRO") == 0)
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+ env = "UBNT-RSPRO";
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+
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+ ath79_prom_append_cmdline("board", env);
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+ }
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+ }
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}
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void __init prom_free_prom_memory(void)
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