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_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_WRT400N,
96 .mach_type = AR71XX_MACH_PB42,
99 .mach_type = AR71XX_MACH_PB44,
101 .name = "MZK-W300NH",
102 .mach_type = AR71XX_MACH_MZK_W300NH,
105 .mach_type = AR71XX_MACH_MZK_W04NU,
109 static inline int is_valid_ram_addr(void *addr)
111 if (((u32) addr > KSEG0) &&
112 ((u32) addr < (KSEG0 + AR71XX_MEM_SIZE_MAX)))
115 if (((u32) addr > KSEG1) &&
116 ((u32) addr < (KSEG1 + AR71XX_MEM_SIZE_MAX)))
122 static __init char *ar71xx_prom_getargv(const char *name)
124 int len = strlen(name);
127 if (!is_valid_ram_addr(ar71xx_prom_argv))
130 for (i = 0; i < ar71xx_prom_argc; i++) {
131 char *argv = ar71xx_prom_argv[i];
133 if (!is_valid_ram_addr(argv))
136 if (strncmp(name, argv, len) == 0 && (argv)[len] == '=')
137 return argv + len + 1;
143 static __init char *ar71xx_prom_getenv(const char *envname)
145 int len = strlen(envname);
148 if (!is_valid_ram_addr(ar71xx_prom_envp))
151 for (env = ar71xx_prom_envp; is_valid_ram_addr(*env); env++) {
152 if (strncmp(envname, *env, len) == 0 && (*env)[len] == '=')
153 return *env + len + 1;
155 /* RedBoot env comes in pointer pairs - key, value */
156 if (strncmp(envname, *env, len) == 0 && (*env)[len] == 0)
157 if (is_valid_ram_addr(*(++env)))
164 static __init unsigned long find_board_byname(char *name)
168 for (i = 0; i < ARRAY_SIZE(boards); i++)
169 if (strcmp(name, boards[i].name) == 0)
170 return boards[i].mach_type;
172 return AR71XX_MACH_GENERIC;
175 static int ar71xx_prom_init_myloader(void)
177 struct myloader_info *mylo;
179 mylo = myloader_get_info();
184 case DEVID_COMPEX_WP543:
185 ar71xx_mach = AR71XX_MACH_WP543;
188 printk(KERN_WARNING "prom: unknown device id: %x\n",
191 ar71xx_set_mac_base(mylo->macs[0]);
196 static void ar71xx_prom_init_generic(void)
200 ar71xx_prom_argc = fw_arg0;
201 ar71xx_prom_argv = (char **)fw_arg1;
202 ar71xx_prom_envp = (char **)fw_arg2;
204 p = ar71xx_prom_getargv("board");
206 p = ar71xx_prom_getenv("board");
208 ar71xx_mach = find_board_byname(p);
210 p = ar71xx_prom_getenv("ethaddr");
212 p = ar71xx_prom_getargv("kmac");
214 ar71xx_parse_mac_addr(p);
217 void __init prom_init(void)
219 printk(KERN_DEBUG "prom: fw_arg0=%08x, fw_arg1=%08x, "
220 "fw_arg2=%08x, fw_arg3=%08x\n",
221 (unsigned int)fw_arg0, (unsigned int)fw_arg1,
222 (unsigned int)fw_arg2, (unsigned int)fw_arg3);
224 ar71xx_mach = AR71XX_MACH_GENERIC;
226 if (ar71xx_prom_init_myloader())
229 ar71xx_prom_init_generic();
232 void __init prom_free_prom_memory(void)
234 /* We do not have to prom memory to free */