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>
16 #include <asm/bootinfo.h>
17 #include <asm/addrspace.h>
18 #include <asm/fw/myloader/myloader.h>
20 #include <asm/mach-ar71xx/ar71xx.h>
26 enum ar71xx_mach_type mach_type;
29 static int ar71xx_prom_argc __initdata;
30 static char **ar71xx_prom_argv __initdata;
31 static char **ar71xx_prom_envp __initdata;
33 static struct board_rec boards[] __initdata = {
36 .mach_type = AR71XX_MACH_RB_411,
39 .mach_type = AR71XX_MACH_RB_411U,
42 .mach_type = AR71XX_MACH_RB_433,
45 .mach_type = AR71XX_MACH_RB_433U,
48 .mach_type = AR71XX_MACH_RB_450,
51 .mach_type = AR71XX_MACH_RB_450G,
54 .mach_type = AR71XX_MACH_RB_493,
57 .mach_type = AR71XX_MACH_AP81,
60 .mach_type = AR71XX_MACH_AP83,
63 .mach_type = AR71XX_MACH_AW_NR580,
66 .mach_type = AR71XX_MACH_TEW_632BRP,
69 .mach_type = AR71XX_MACH_TL_WR741ND,
72 .mach_type = AR71XX_MACH_TL_WR941ND,
75 .mach_type = AR71XX_MACH_UBNT_RS,
78 .mach_type = AR71XX_MACH_UBNT_RSPRO,
80 .name = "Ubiquiti AR71xx-based board",
81 .mach_type = AR71XX_MACH_UBNT_RS,
83 .name = "UBNT-LS-SR71",
84 .mach_type = AR71XX_MACH_UBNT_LSSR71,
87 .mach_type = AR71XX_MACH_UBNT_LSX,
90 .mach_type = AR71XX_MACH_WNR2000,
93 .mach_type = AR71XX_MACH_WRT160NL,
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 inline int is_valid_ram_addr(void *addr)
114 if (((u32) addr > KSEG0) &&
115 ((u32) addr < (KSEG0 + AR71XX_MEM_SIZE_MAX)))
118 if (((u32) addr > KSEG1) &&
119 ((u32) addr < (KSEG1 + AR71XX_MEM_SIZE_MAX)))
125 static __init char *ar71xx_prom_getargv(const char *name)
127 int len = strlen(name);
130 if (!is_valid_ram_addr(ar71xx_prom_argv))
133 for (i = 0; i < ar71xx_prom_argc; i++) {
134 char *argv = ar71xx_prom_argv[i];
136 if (!is_valid_ram_addr(argv))
139 if (strncmp(name, argv, len) == 0 && (argv)[len] == '=')
140 return argv + len + 1;
146 static __init char *ar71xx_prom_getenv(const char *envname)
148 int len = strlen(envname);
151 if (!is_valid_ram_addr(ar71xx_prom_envp))
154 for (env = ar71xx_prom_envp; is_valid_ram_addr(*env); env++) {
155 if (strncmp(envname, *env, len) == 0 && (*env)[len] == '=')
156 return *env + len + 1;
158 /* RedBoot env comes in pointer pairs - key, value */
159 if (strncmp(envname, *env, len) == 0 && (*env)[len] == 0)
160 if (is_valid_ram_addr(*(++env)))
167 static __init unsigned long find_board_byname(char *name)
171 for (i = 0; i < ARRAY_SIZE(boards); i++)
172 if (strcmp(name, boards[i].name) == 0)
173 return boards[i].mach_type;
175 return AR71XX_MACH_GENERIC;
178 static int ar71xx_prom_init_myloader(void)
180 struct myloader_info *mylo;
182 mylo = myloader_get_info();
187 case DEVID_COMPEX_WP543:
188 ar71xx_mach = AR71XX_MACH_WP543;
191 printk(KERN_WARNING "prom: unknown device id: %x\n",
194 ar71xx_set_mac_base(mylo->macs[0]);
199 static void ar71xx_prom_init_generic(void)
203 ar71xx_prom_argc = fw_arg0;
204 ar71xx_prom_argv = (char **)fw_arg1;
205 ar71xx_prom_envp = (char **)fw_arg2;
207 p = ar71xx_prom_getargv("board");
209 p = ar71xx_prom_getenv("board");
211 ar71xx_mach = find_board_byname(p);
213 p = ar71xx_prom_getenv("ethaddr");
215 p = ar71xx_prom_getargv("kmac");
217 ar71xx_parse_mac_addr(p);
220 void __init prom_init(void)
222 printk(KERN_DEBUG "prom: fw_arg0=%08x, fw_arg1=%08x, "
223 "fw_arg2=%08x, fw_arg3=%08x\n",
224 (unsigned int)fw_arg0, (unsigned int)fw_arg1,
225 (unsigned int)fw_arg2, (unsigned int)fw_arg3);
227 ar71xx_mach = AR71XX_MACH_GENERIC;
229 if (ar71xx_prom_init_myloader())
232 ar71xx_prom_init_generic();
235 void __init prom_free_prom_memory(void)
237 /* We do not have to prom memory to free */