/*
* Atheros AR71xx SoC specific prom routines
*
- * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* This program is free software; you can redistribute it and/or modify it
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
-#include <linux/serial_reg.h>
+#include <linux/string.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
#include <asm/mach-ar71xx/ar71xx.h>
-#include "devices.h"
-
-struct board_rec {
- char *name;
- unsigned long mach_type;
-};
-
-static int ar71xx_prom_argc __initdata;
-static char **ar71xx_prom_argv __initdata;
-static char **ar71xx_prom_envp __initdata;
-
-static struct board_rec boards[] __initdata = {
- {
- .name = "411",
- .mach_type = AR71XX_MACH_RB_411,
- }, {
- .name = "433",
- .mach_type = AR71XX_MACH_RB_433,
- }, {
- .name = "450",
- .mach_type = AR71XX_MACH_RB_450,
- }, {
- .name = "493",
- .mach_type = AR71XX_MACH_RB_493,
- }, {
- .name = "AP81",
- .mach_type = AR71XX_MACH_AP81,
- }, {
- .name = "AP83",
- .mach_type = AR71XX_MACH_AP83,
- }, {
- .name = "AW-NR580",
- .mach_type = AR71XX_MACH_AW_NR580,
- }, {
- .name = "TEW-632BRP",
- .mach_type = AR71XX_MACH_TEW_632BRP,
- }, {
- .name = "TL-WR941ND",
- .mach_type = AR71XX_MACH_TL_WR941ND,
- }, {
- .name = "UBNT-RS",
- .mach_type = AR71XX_MACH_UBNT_RS,
- }, {
- .name = "UBNT-RSPRO",
- .mach_type = AR71XX_MACH_UBNT_RSPRO,
- }, {
- .name = "Ubiquiti AR71xx-based board",
- .mach_type = AR71XX_MACH_UBNT_RS,
- }, {
- .name = "UBNT-LS-SR71",
- .mach_type = AR71XX_MACH_UBNT_LSSR71,
- }, {
- .name = "UBNT-LSX",
- .mach_type = AR71XX_MACH_UBNT_LSX,
- }, {
- .name = "WNR2000",
- .mach_type = AR71XX_MACH_WNR2000,
- }, {
- .name = "WRT400N",
- .mach_type = AR71XX_MACH_WRT400N,
- }, {
- .name = "PB42",
- .mach_type = AR71XX_MACH_PB42,
- }, {
- .name = "MZK-W300NH",
- .mach_type = AR71XX_MACH_MZK_W300NH,
- }, {
- .name = "MZK-W04NU",
- .mach_type = AR71XX_MACH_MZK_W04NU,
- }
-};
-
static inline int is_valid_ram_addr(void *addr)
{
if (((u32) addr > KSEG0) &&
return 0;
}
-static __init char *ar71xx_prom_getargv(const char *name)
+static void __init ar71xx_prom_append_cmdline(const char *name,
+ const char *value)
{
- int len = strlen(name);
- int i;
-
- if (!is_valid_ram_addr(ar71xx_prom_argv))
- return NULL;
-
- for (i = 0; i < ar71xx_prom_argc; i++) {
- char *argv = ar71xx_prom_argv[i];
+ char buf[COMMAND_LINE_SIZE];
- if (!is_valid_ram_addr(argv))
- continue;
-
- if (strncmp(name, argv, len) == 0 && (argv)[len] == '=')
- return argv + len + 1;
- }
-
- return NULL;
+ snprintf(buf, sizeof(buf), " %s=%s", name, value);
+ strlcat(arcs_cmdline, buf, sizeof(arcs_cmdline));
}
-static __init char *ar71xx_prom_getenv(const char *envname)
+static const char * __init ar71xx_prom_find_env(char **envp, const char *name)
{
- int len = strlen(envname);
- char **env;
+ const char *ret = NULL;
+ int len;
+ char **p;
- if (!is_valid_ram_addr(ar71xx_prom_envp))
+ if (!is_valid_ram_addr(envp))
return NULL;
- for (env = ar71xx_prom_envp; is_valid_ram_addr(*env); env++) {
- if (strncmp(envname, *env, len) == 0 && (*env)[len] == '=')
- return *env + len + 1;
+ 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(envname, *env, len) == 0 && (*env)[len] == 0)
- if (is_valid_ram_addr(*(++env)))
- return *env;
+ if (strncmp(name, *p, len) == 0 && (*p)[len] == 0)
+ if (is_valid_ram_addr(*(++p))) {
+ ret = *p;
+ break;
+ }
}
- return NULL;
-}
-
-static __init unsigned long find_board_byname(char *name)
-{
- int i;
-
- for (i = 0; i < ARRAY_SIZE(boards); i++)
- if (strcmp(name, boards[i].name) == 0)
- return boards[i].mach_type;
-
- return AR71XX_MACH_GENERIC;
+ return ret;
}
-static int ar71xx_prom_init_myloader(void)
+static int __init ar71xx_prom_init_myloader(void)
{
struct myloader_info *mylo;
+ char mac_buf[32];
+ char *mac;
mylo = myloader_get_info();
if (!mylo)
switch (mylo->did) {
case DEVID_COMPEX_WP543:
- ar71xx_mach_type = AR71XX_MACH_WP543;
+ ar71xx_prom_append_cmdline("board", "WP543");
break;
default:
printk(KERN_WARNING "prom: unknown device id: %x\n",
mylo->did);
+ return 0;
+ }
+
+ mac = mylo->macs[0];
+ snprintf(mac_buf, sizeof(mac_buf), "%02x:%02x:%02x:%02x:%02x:%02x",
+ mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+
+ ar71xx_prom_append_cmdline("ethaddr", mac_buf);
+
+ return 1;
+}
+
+#ifdef CONFIG_IMAGE_CMDLINE_HACK
+extern char __image_cmdline[];
+
+static int __init ar71xx_use__image_cmdline(void)
+{
+ char *p = __image_cmdline;
+ int replace = 0;
+
+ if (*p == '-') {
+ replace = 1;
+ p++;
+ }
+
+ if (*p == '\0')
+ return 0;
+
+ if (replace) {
+ strlcpy(arcs_cmdline, p, sizeof(arcs_cmdline));
+ } else {
+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+ strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
}
- ar71xx_set_mac_base(mylo->macs[0]);
return 1;
}
+#else
+static inline int ar71xx_use__image_cmdline(void) { return 0; }
+#endif
-static void ar71xx_prom_init_generic(void)
+static __init void ar71xx_prom_init_cmdline(int argc, char **argv)
{
- char *p;
-
- ar71xx_prom_argc = fw_arg0;
- ar71xx_prom_argv = (char **)fw_arg1;
- ar71xx_prom_envp = (char **)fw_arg2;
-
- p = ar71xx_prom_getargv("board");
- if (!p)
- p = ar71xx_prom_getenv("board");
- if (p)
- ar71xx_mach_type = find_board_byname(p);
-
- p = ar71xx_prom_getenv("ethaddr");
- if (!p)
- p = ar71xx_prom_getargv("kmac");
- if (p)
- ar71xx_parse_mac_addr(p);
+ int i;
+
+ if (ar71xx_use__image_cmdline())
+ return;
+
+ if (!is_valid_ram_addr(argv))
+ return;
+
+ for (i = 0; i < argc; i++)
+ if (is_valid_ram_addr(argv[i])) {
+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
+ strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
+ }
}
void __init prom_init(void)
{
+ const char *env;
+ char **envp;
+
printk(KERN_DEBUG "prom: fw_arg0=%08x, fw_arg1=%08x, "
"fw_arg2=%08x, fw_arg3=%08x\n",
(unsigned int)fw_arg0, (unsigned int)fw_arg1,
(unsigned int)fw_arg2, (unsigned int)fw_arg3);
- ar71xx_mach_type = AR71XX_MACH_GENERIC;
if (ar71xx_prom_init_myloader())
return;
- ar71xx_prom_init_generic();
-}
+ ar71xx_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
-void __init prom_free_prom_memory(void)
-{
- /* We do not have to prom memory to free */
-}
+ envp = (char **)fw_arg2;
+ if (!strstr(arcs_cmdline, "ethaddr=")) {
+ env = ar71xx_prom_find_env(envp, "ethaddr");
+ if (env)
+ ar71xx_prom_append_cmdline("ethaddr", env);
+ }
+
+ if (!strstr(arcs_cmdline, "board=")) {
+ env = ar71xx_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";
-#define UART_READ(r) \
- __raw_readl((void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE) + 4 * (r)))
+ if (strcmp(env, "RouterStation PRO") == 0)
+ env = "UBNT-RSPRO";
-#define UART_WRITE(r, v) \
- __raw_writel((v), (void __iomem *)(KSEG1ADDR(AR71XX_UART_BASE) + 4*(r)))
+ ar71xx_prom_append_cmdline("board", env);
+ }
+ }
+}
-void prom_putchar(unsigned char ch)
+void __init prom_free_prom_memory(void)
{
- while (((UART_READ(UART_LSR)) & UART_LSR_THRE) == 0);
- UART_WRITE(UART_TX, ch);
- while (((UART_READ(UART_LSR)) & UART_LSR_THRE) == 0);
+ /* We do not have to prom memory to free */
}
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