2 * Atheros AR71xx SoC specific prom routines
4 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
5 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License version 2 as published
9 * by the Free Software Foundation.
12 #include <linux/kernel.h>
13 #include <linux/init.h>
15 #include <linux/string.h>
17 #include <asm/bootinfo.h>
18 #include <asm/addrspace.h>
19 #include <asm/fw/myloader/myloader.h>
21 #include <asm/mach-ar71xx/ar71xx.h>
27 enum ar71xx_mach_type mach_type;
30 static struct board_rec boards[] __initdata = {
33 .mach_type = AR71XX_MACH_RB_411,
36 .mach_type = AR71XX_MACH_RB_411U,
39 .mach_type = AR71XX_MACH_RB_433,
42 .mach_type = AR71XX_MACH_RB_433U,
45 .mach_type = AR71XX_MACH_RB_450,
48 .mach_type = AR71XX_MACH_RB_450G,
51 .mach_type = AR71XX_MACH_RB_493,
54 .mach_type = AR71XX_MACH_AP81,
57 .mach_type = AR71XX_MACH_AP83,
60 .mach_type = AR71XX_MACH_AW_NR580,
63 .mach_type = AR71XX_MACH_TEW_632BRP,
66 .mach_type = AR71XX_MACH_TL_WR741ND,
69 .mach_type = AR71XX_MACH_TL_WR941ND,
72 .mach_type = AR71XX_MACH_UBNT_RS,
75 .mach_type = AR71XX_MACH_UBNT_RSPRO,
77 .name = "Ubiquiti AR71xx-based board",
78 .mach_type = AR71XX_MACH_UBNT_RS,
80 .name = "UBNT-LS-SR71",
81 .mach_type = AR71XX_MACH_UBNT_LSSR71,
84 .mach_type = AR71XX_MACH_UBNT_LSX,
87 .mach_type = AR71XX_MACH_WNR2000,
90 .mach_type = AR71XX_MACH_WRT160NL,
93 .mach_type = AR71XX_MACH_WP543,
96 .mach_type = AR71XX_MACH_WRT400N,
99 .mach_type = AR71XX_MACH_PB42,
102 .mach_type = AR71XX_MACH_PB44,
104 .name = "MZK-W300NH",
105 .mach_type = AR71XX_MACH_MZK_W300NH,
108 .mach_type = AR71XX_MACH_MZK_W04NU,
112 static int __init ar71xx_board_setup(char *name)
116 for (i = 0; i < ARRAY_SIZE(boards); i++)
117 if (strcmp(name, boards[i].name) == 0) {
118 ar71xx_mach = boards[i].mach_type;
124 __setup("board=", ar71xx_board_setup);
126 static int __init ar71xx_ethaddr_setup(char *str)
128 ar71xx_parse_mac_addr(str);
131 __setup("ethaddr=", ar71xx_ethaddr_setup);
133 static int __init ar71xx_kmac_setup(char *str)
135 ar71xx_parse_mac_addr(str);
138 __setup("kmac=", ar71xx_kmac_setup);
140 static inline int is_valid_ram_addr(void *addr)
142 if (((u32) addr > KSEG0) &&
143 ((u32) addr < (KSEG0 + AR71XX_MEM_SIZE_MAX)))
146 if (((u32) addr > KSEG1) &&
147 ((u32) addr < (KSEG1 + AR71XX_MEM_SIZE_MAX)))
153 static void __init ar71xx_prom_append_cmdline(const char *name,
158 snprintf(buf, sizeof(buf), " %s=%s", name, value);
159 strlcat(arcs_cmdline, buf, sizeof(arcs_cmdline));
162 static void __init ar71xx_prom_find_env(char **envp, const char *name)
164 int len = strlen(name);
167 if (!is_valid_ram_addr(envp))
170 for (p = envp; is_valid_ram_addr(*p); p++) {
171 if (strncmp(name, *p, len) == 0 && (*p)[len] == '=') {
172 ar71xx_prom_append_cmdline(name, *p + len + 1);
176 /* RedBoot env comes in pointer pairs - key, value */
177 if (strncmp(name, *p, len) == 0 && (*p)[len] == 0)
178 if (is_valid_ram_addr(*(++p))) {
179 ar71xx_prom_append_cmdline(name, *p);
185 static int __init ar71xx_prom_init_myloader(void)
187 struct myloader_info *mylo;
191 mylo = myloader_get_info();
196 case DEVID_COMPEX_WP543:
197 ar71xx_prom_append_cmdline("board", "WP543");
200 printk(KERN_WARNING "prom: unknown device id: %x\n",
206 snprintf(mac_buf, sizeof(mac_buf), "%02x:%02x:%02x:%02x:%02x:%02x",
207 mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
209 ar71xx_prom_append_cmdline("ethaddr", mac_buf);
214 #ifdef CONFIG_IMAGE_CMDLINE_HACK
215 extern char __image_cmdline[];
217 static int __init ar71xx_use__image_cmdline(void)
219 char *p = __image_cmdline;
231 strlcpy(arcs_cmdline, p, sizeof(arcs_cmdline));
233 strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
234 strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
240 static int inline ar71xx_use__image_cmdline(void) { return 0; }
243 static __init void ar71xx_prom_init_cmdline(int argc, char **argv)
247 if (ar71xx_use__image_cmdline())
250 if (!is_valid_ram_addr(argv))
253 for (i = 0; i < argc; i++)
254 if (is_valid_ram_addr(argv[i])) {
255 strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
256 strlcat(arcs_cmdline, argv[i], sizeof(arcs_cmdline));
260 void __init prom_init(void)
264 printk(KERN_DEBUG "prom: fw_arg0=%08x, fw_arg1=%08x, "
265 "fw_arg2=%08x, fw_arg3=%08x\n",
266 (unsigned int)fw_arg0, (unsigned int)fw_arg1,
267 (unsigned int)fw_arg2, (unsigned int)fw_arg3);
270 ar71xx_mach = AR71XX_MACH_GENERIC;
272 if (ar71xx_prom_init_myloader())
275 ar71xx_prom_init_cmdline(fw_arg0, (char **)fw_arg1);
277 envp = (char **)fw_arg2;
278 ar71xx_prom_find_env(envp, "board");
279 ar71xx_prom_find_env(envp, "ethaddr");
282 void __init prom_free_prom_memory(void)
284 /* We do not have to prom memory to free */