target/linux/adm5120/files/arch/mips/adm5120/common/prom.c

   1 /*
   2  *  ADM5120 specific prom routines
   3  *
   4  *  Copyright (C) 2007-2008 Gabor Juhos <juhosg@openwrt.org>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify it
   7  *  under the terms of the GNU General Public License version 2 as published
   8  *  by the Free Software Foundation.
   9  *
  10  */
  11
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/string.h>
  15 #include <linux/mm.h>
  16 #include <linux/io.h>
  17
  18 #include <asm/addrspace.h>
  19 #include <asm/bootinfo.h>
  20 #include <asm/mips_machine.h>
  21
  22 #include <asm/mach-adm5120/adm5120_info.h>
  23 #include <asm/mach-adm5120/adm5120_defs.h>
  24 #include <asm/mach-adm5120/adm5120_uart.h>
  25
  26 #include <prom/cfe.h>
  27 #include <prom/generic.h>
  28 #include <prom/routerboot.h>
  29 #include <prom/myloader.h>
  30 #include <prom/zynos.h>
  31
  32 unsigned int adm5120_prom_type  = ADM5120_PROM_GENERIC;
  33
  34 struct board_desc {
  35         unsigned long   mach_type;
  36         char            *name;
  37 };
  38
  39 #define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
  40 static struct board_desc common_boards[] __initdata = {
  41         /* Cellvision/SparkLAN boards */
  42         DEFBOARD("CAS-630",     MACH_ADM5120_CAS630),
  43         DEFBOARD("CAS-670",     MACH_ADM5120_CAS670),
  44         DEFBOARD("CAS-700",     MACH_ADM5120_CAS700),
  45         DEFBOARD("CAS-771",     MACH_ADM5120_CAS771),
  46         DEFBOARD("CAS-790",     MACH_ADM5120_CAS790),
  47         DEFBOARD("CAS-861",     MACH_ADM5120_CAS861),
  48         DEFBOARD("NFS-101U",    MACH_ADM5120_NFS101U),
  49         /* Compex boards */
  50         DEFBOARD("WP54G-WRT",   MACH_ADM5120_WP54G_WRT),
  51         /* Edimax boards */
  52         DEFBOARD("BR-6104K",    MACH_ADM5120_BR6104K),
  53         DEFBOARD("BR-6104KP",   MACH_ADM5120_BR6104KP),
  54         DEFBOARD("BR-6104WG",   MACH_ADM5120_BR61X4WG),
  55         DEFBOARD("BR-6114WG",   MACH_ADM5120_BR61X4WG),
  56         /* Infineon boards */
  57         DEFBOARD("EASY 5120P-ATA",      MACH_ADM5120_EASY5120PATA),
  58         DEFBOARD("EASY 5120-RT",        MACH_ADM5120_EASY5120RT),
  59         DEFBOARD("EASY 5120-WVoIP",     MACH_ADM5120_EASY5120WVOIP),
  60         DEFBOARD("EASY 83000",          MACH_ADM5120_EASY83000),
  61         /* Mikrotik RouterBOARDs */
  62         DEFBOARD("111",         MACH_ADM5120_RB_11X),
  63         DEFBOARD("112",         MACH_ADM5120_RB_11X),
  64         DEFBOARD("133",         MACH_ADM5120_RB_133),
  65         DEFBOARD("133C",        MACH_ADM5120_RB_133C),
  66         DEFBOARD("133C3",       MACH_ADM5120_RB_133C),
  67         DEFBOARD("150",         MACH_ADM5120_RB_153), /* it's intentional */
  68         DEFBOARD("153",         MACH_ADM5120_RB_153),
  69         DEFBOARD("192",         MACH_ADM5120_RB_192),
  70         DEFBOARD("miniROUTER",  MACH_ADM5120_RB_150),
  71         /* Motorola boards */
  72         DEFBOARD("Powerline MU Gateway",MACH_ADM5120_PMUGW),
  73 };
  74
  75 static unsigned long __init find_machtype_byname(char *name)
  76 {
  77         unsigned long ret;
  78         int i;
  79
  80         ret = MACH_ADM5120_GENERIC;
  81         if (name == NULL)
  82                 goto out;
  83
  84         if (*name == '\0')
  85                 goto out;
  86
  87         for (i = 0; i < ARRAY_SIZE(common_boards); i++) {
  88                 if (strcmp(common_boards[i].name, name) == 0) {
  89                         ret = common_boards[i].mach_type;
  90                         break;
  91                 }
  92         }
  93
  94 out:
  95         return ret;
  96 }
  97
  98 static unsigned long __init detect_machtype_routerboot(void)
  99 {
 100         char *name;
 101
 102         name = routerboot_get_boardname();
 103         return find_machtype_byname(name);
 104 }
 105
 106 static unsigned long __init detect_machtype_generic(void)
 107 {
 108         char *name;
 109
 110         name = generic_prom_getenv("board_name");
 111         return find_machtype_byname(name);
 112 }
 113
 114 unsigned long __init detect_machtype_cfe(void)
 115 {
 116         char *name;
 117
 118         name = cfe_getenv("BOARD_NAME");
 119         return find_machtype_byname(name);
 120 }
 121
 122 static struct {
 123         unsigned long   mach_type;
 124         u16             vendor_id;
 125         u16             board_id;
 126 } zynos_boards[] __initdata = {
 127 #define ZYNOS_BOARD(vi, bi, mt) \
 128         {.vendor_id = (vi), .board_id = (bi), .mach_type = (mt)}
 129
 130 #define ZYXEL_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_ZYXEL, bi, mt)
 131 #define DLINK_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_DLINK, bi, mt)
 132 #define LUCENT_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_LUCENT, bi, mt)
 133         ZYXEL_BOARD(ZYNOS_BOARD_HS100,  MACH_ADM5120_HS100),
 134         ZYXEL_BOARD(ZYNOS_BOARD_P334U,  MACH_ADM5120_P334U),
 135         ZYXEL_BOARD(ZYNOS_BOARD_P334W,  MACH_ADM5120_P334W),
 136         ZYXEL_BOARD(ZYNOS_BOARD_P334WH, MACH_ADM5120_P334WH),
 137         ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 138         ZYXEL_BOARD(ZYNOS_BOARD_P334WT, MACH_ADM5120_P334WT),
 139         ZYXEL_BOARD(ZYNOS_BOARD_P334WT_ALT,     MACH_ADM5120_P334WT),
 140         ZYXEL_BOARD(ZYNOS_BOARD_P335,   MACH_ADM5120_P335),
 141         ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 142         ZYXEL_BOARD(ZYNOS_BOARD_P335U,  MACH_ADM5120_P335U)
 143 };
 144
 145 static unsigned long __init detect_machtype_bootbase(void)
 146 {
 147         int i;
 148
 149         for (i = 0; i < ARRAY_SIZE(zynos_boards); i++) {
 150                 if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 151                         zynos_boards[i].board_id == bootbase_info.board_id) {
 152                         return zynos_boards[i].mach_type;
 153                         break;
 154                 }
 155         }
 156
 157         printk(KERN_WARNING "Unknown ZyXEL model (%u)\n",
 158                                 bootbase_info.board_id);
 159         return MACH_ADM5120_GENERIC;
 160 }
 161
 162 static struct {
 163         unsigned long   mach_type;
 164         u16     vid;
 165         u16     did;
 166         u16     svid;
 167         u16     sdid;
 168 } mylo_boards[]  __initdata = {
 169 #define MYLO_BOARD(v, d, sv, sd, mt) \
 170         {.vid = (v), .did = (d), .svid = (sv), .sdid = (sd), .mach_type = (mt)}
 171 #define COMPEX_BOARD(d, mt) \
 172         MYLO_BOARD(VENID_COMPEX, (d), VENID_COMPEX, (d), (mt))
 173
 174         COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
 175         COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
 176         COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
 177         COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54),
 178         COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
 179         COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54),
 180         COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WP54),
 181         COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WP54),
 182 };
 183
 184 static unsigned long __init detect_machtype_myloader(void)
 185 {
 186         unsigned long ret;
 187         int i;
 188
 189         ret = MACH_ADM5120_GENERIC;
 190         for (i = 0; i < ARRAY_SIZE(mylo_boards); i++) {
 191                 if (mylo_boards[i].vid == myloader_info.vid &&
 192                         mylo_boards[i].did == myloader_info.did &&
 193                         mylo_boards[i].svid == myloader_info.svid &&
 194                         mylo_boards[i].sdid == myloader_info.sdid) {
 195                         ret = mylo_boards[i].mach_type;
 196                         break;
 197                 }
 198         }
 199
 200         return ret;
 201 }
 202
 203 static void __init prom_detect_machtype(void)
 204 {
 205         if (bootbase_present()) {
 206                 adm5120_prom_type = ADM5120_PROM_BOOTBASE;
 207                 adm5120_mach_type = detect_machtype_bootbase();
 208                 return;
 209         }
 210
 211         if (cfe_present()) {
 212                 adm5120_prom_type = ADM5120_PROM_CFE;
 213                 adm5120_mach_type = detect_machtype_cfe();
 214                 return;
 215         }
 216
 217         if (myloader_present()) {
 218                 adm5120_prom_type = ADM5120_PROM_MYLOADER;
 219                 adm5120_mach_type = detect_machtype_myloader();
 220                 return;
 221         }
 222
 223         if (routerboot_present()) {
 224                 adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
 225                 adm5120_mach_type = detect_machtype_routerboot();
 226                 return;
 227         }
 228
 229         if (generic_prom_present()) {
 230                 adm5120_prom_type = ADM5120_PROM_GENERIC;
 231                 adm5120_mach_type = detect_machtype_generic();
 232                 return;
 233         }
 234
 235         adm5120_mach_type = MACH_ADM5120_GENERIC;
 236 }
 237
 238 /* TODO: this is an ugly hack for RouterBOARDS */
 239 extern char _image_cmdline;
 240 static void __init prom_init_cmdline(void)
 241 {
 242         char *cmd;
 243
 244         /* init command line, register a default kernel command line */
 245         cmd = &_image_cmdline + 8;
 246         if (strlen(cmd) > 0)
 247                 strlcpy(arcs_cmdline, cmd, sizeof(arcs_cmdline));
 248
 249 }
 250
 251 #define UART_READ(r) \
 252         __raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 253 #define UART_WRITE(r, v) \
 254         __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 255
 256 void __init prom_putchar(char ch)
 257 {
 258         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 259         UART_WRITE(UART_REG_DATA, ch);
 260         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 261 }
 262
 263 void __init prom_init(void)
 264 {
 265         prom_detect_machtype();
 266         prom_init_cmdline();
 267 }
 268
 269 void __init prom_free_prom_memory(void)
 270 {
 271         /* We do not have to prom memory to free */
 272 }