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ramips: change prom code to accept 'board=FOOBAR' from the command line
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18142 3c298f89-4303-0410-b956-a3cf2f4a3e73
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c26fdeeec1
commit
50ea4bdcbd
@ -24,10 +24,6 @@ struct board_rec {
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enum ramips_mach_type mach_type;
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};
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static int ramips_prom_argc __initdata;
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static char **ramips_prom_argv __initdata;
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static char **ramips_prom_envp __initdata;
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static struct board_rec boards[] __initdata = {
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{
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.name = "RT-N15",
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@ -70,46 +66,82 @@ static inline void *to_ram_addr(void *addr)
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return NULL;
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}
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static __init char *ramips_prom_getargv(const char *name)
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static void __init prom_append_cmdline(const char *name,
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const char *value)
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{
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int len = strlen(name);
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int i;
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char buf[CL_SIZE];
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if (!ramips_prom_argv) {
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printk(KERN_DEBUG "argv=%p is invalid, skipping\n",
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ramips_prom_argv);
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return NULL;
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snprintf(buf, sizeof(buf), " %s=%s", name, value);
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strlcat(arcs_cmdline, buf, sizeof(arcs_cmdline));
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}
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#ifdef CONFIG_IMAGE_CMDLINE_HACK
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extern char __image_cmdline[];
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static int __init use_image_cmdline(void)
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{
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char *p = __image_cmdline;
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int replace = 0;
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if (*p == '-') {
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replace = 1;
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p++;
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}
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for (i = 0; i < ramips_prom_argc; i++) {
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char *argv = to_ram_addr(ramips_prom_argv[i]);
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if (*p == '\0')
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return 0;
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if (!argv) {
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if (replace) {
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strlcpy(arcs_cmdline, p, sizeof(arcs_cmdline));
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} else {
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
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strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
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}
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return 1;
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}
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#else
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static int inline use_image_cmdline(void) { return 0; }
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#endif
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static __init void prom_init_cmdline(int argc, char **argv)
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{
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int i;
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if (use_image_cmdline())
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return;
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if (!argv) {
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printk(KERN_DEBUG "argv=%p is invalid, skipping\n",
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argv);
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return;
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}
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for (i = 0; i < argc; i++) {
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char *p = to_ram_addr(argv[i]);
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if (!p) {
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printk(KERN_DEBUG
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"argv[%d]=%p is invalid, skipping\n",
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i, ramips_prom_argv[i]);
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i, argv[i]);
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continue;
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}
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printk(KERN_DEBUG "argv[%d]: %s\n", i, argv);
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if (strncmp(name, argv, len) == 0 && (argv)[len] == '=')
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return argv + len + 1;
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printk(KERN_DEBUG "argv[%d]: %s\n", i, p);
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
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strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
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}
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return NULL;
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}
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static __init char *ramips_prom_getenv(const char *envname)
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static __init char *prom_append_env(char **env, const char *envname)
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{
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#define PROM_MAX_ENVS 256
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int len = strlen(envname);
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char **env;
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int i;
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env = ramips_prom_envp;
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if (!env) {
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printk(KERN_DEBUG "envp=%p is not in RAM, skipping\n",
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ramips_prom_envp);
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printk(KERN_DEBUG "env=%p is not in RAM, skipping\n",
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env);
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return NULL;
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}
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@ -121,14 +153,14 @@ static __init char *ramips_prom_getenv(const char *envname)
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printk(KERN_DEBUG "env[%d]: %s\n", i, p);
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if (strncmp(envname, p, len) == 0 && p[len] == '=')
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return p + len + 1;
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prom_append_cmdline(envname, p + len + 1);
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}
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return NULL;
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#undef PROM_MAX_ENVS
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}
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static __init void find_board_byname(char *name)
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static __init int ramips_board_setup(char *name)
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{
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int i;
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@ -137,26 +169,29 @@ static __init void find_board_byname(char *name)
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ramips_mach = boards[i].mach_type;
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break;
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}
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return 1;
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}
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__setup("board=", ramips_board_setup);
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void __init prom_init(void)
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{
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char *p;
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int argc;
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char **envp;
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char **argv;
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printk(KERN_DEBUG
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"prom: fw_arg0=%08x, fw_arg1=%08x, fw_arg2=%08x, fw_arg3=%08x\n",
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(unsigned int)fw_arg0, (unsigned int)fw_arg1,
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(unsigned int)fw_arg2, (unsigned int)fw_arg3);
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ramips_prom_argc = fw_arg0;
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ramips_prom_argv = to_ram_addr((void *)fw_arg1);
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ramips_prom_envp = to_ram_addr((void *)fw_arg2);
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argc = fw_arg0;
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argv = to_ram_addr((void *)fw_arg1);
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prom_init_cmdline(argc, argv);
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p = ramips_prom_getargv("board");
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if (!p)
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p = ramips_prom_getenv("board");
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if (p)
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find_board_byname(p);
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envp = to_ram_addr((void *)fw_arg2);
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prom_append_env(envp, "board");
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prom_append_env(envp, "ethaddr");
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}
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void __init prom_free_prom_memory(void)
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