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

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 specific prom routines
   5  *
   6  *  Copyright (C) 2007 OpenWrt.org
   7  *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or
  10  *  modify it under the terms of the GNU General Public License
  11  *  as published by the Free Software Foundation; either version 2
  12  *  of the License, or (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the
  21  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  22  *  Boston, MA  02110-1301, USA.
  23  *
  24  */
  25
  26 #include <linux/init.h>
  27 #include <linux/kernel.h>
  28 #include <linux/string.h>
  29 #include <linux/mm.h>
  30 #include <linux/io.h>
  31
  32 #include <asm/bootinfo.h>
  33 #include <asm/addrspace.h>
  34
  35 #include <adm5120_info.h>
  36 #include <adm5120_defs.h>
  37 #include <adm5120_uart.h>
  38
  39 #include <prom/cfe.h>
  40 #include <prom/generic.h>
  41 #include <prom/routerboot.h>
  42 #include <prom/myloader.h>
  43 #include <prom/zynos.h>
  44
  45 unsigned int adm5120_prom_type  = ADM5120_PROM_GENERIC;
  46
  47 struct board_desc {
  48         unsigned long   mach_type;
  49         char            *name;
  50 };
  51
  52 #define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
  53 static struct board_desc common_boards[] __initdata = {
  54         /* Cellvision/SparkLAN boards */
  55         DEFBOARD("CAS-630",     MACH_ADM5120_CAS630),
  56         DEFBOARD("CAS-670",     MACH_ADM5120_CAS670),
  57         DEFBOARD("CAS-771",     MACH_ADM5120_CAS771),
  58         DEFBOARD("CAS-790",     MACH_ADM5120_CAS790),
  59         DEFBOARD("CAS-861",     MACH_ADM5120_CAS861),
  60         /* Compex boards */
  61         DEFBOARD("WP54G-WRT",   MACH_ADM5120_WP54G_WRT),
  62         /* Edimax boards */
  63         DEFBOARD("BR-6104K",    MACH_ADM5120_BR6104K),
  64         DEFBOARD("BR-6104KP",   MACH_ADM5120_BR6104K),
  65         DEFBOARD("BR-6104WG",   MACH_ADM5120_BR61x4WG),
  66         /* Infineon boards */
  67         DEFBOARD("EASY 5120P-ATA",      MACH_ADM5120_EASY5120PATA),
  68         DEFBOARD("EASY 5120-RT",        MACH_ADM5120_EASY5120RT),
  69         DEFBOARD("EASY 5120-WVoIP",     MACH_ADM5120_EASY5120WVOIP),
  70         DEFBOARD("EASY 83000",          MACH_ADM5120_EASY83000),
  71         /* Mikrotik RouterBOARDs */
  72         DEFBOARD("111",         MACH_ADM5120_RB_111),
  73         DEFBOARD("112",         MACH_ADM5120_RB_112),
  74         DEFBOARD("133",         MACH_ADM5120_RB_133),
  75         DEFBOARD("133C",        MACH_ADM5120_RB_133C),
  76         DEFBOARD("133C3",       MACH_ADM5120_RB_133C),
  77         DEFBOARD("150",         MACH_ADM5120_RB_153), /* it's intentional */
  78         DEFBOARD("153",         MACH_ADM5120_RB_153),
  79         DEFBOARD("192",         MACH_ADM5120_RB_192),
  80         DEFBOARD("miniROUTER",  MACH_ADM5120_RB_150),
  81 };
  82
  83 static unsigned long __init find_machtype_byname(char *name)
  84 {
  85         unsigned long ret;
  86         int i;
  87
  88         ret = MACH_ADM5120_GENERIC;
  89         if (name == NULL)
  90                 goto out;
  91
  92         if (*name == '\0')
  93                 goto out;
  94
  95         for (i = 0; i < ARRAY_SIZE(common_boards); i++) {
  96                 if (strcmp(common_boards[i].name, name) == 0) {
  97                         ret = common_boards[i].mach_type;
  98                         break;
  99                 }
 100         }
 101
 102 out:
 103         return ret;
 104 }
 105
 106 static unsigned long __init detect_machtype_routerboot(void)
 107 {
 108         char *name;
 109
 110         name = routerboot_get_boardname();
 111         return find_machtype_byname(name);
 112 }
 113
 114 static unsigned long __init detect_machtype_generic(void)
 115 {
 116         char *name;
 117
 118         name = generic_prom_getenv("board_name");
 119         return find_machtype_byname(name);
 120 }
 121
 122 unsigned long __init detect_machtype_cfe(void)
 123 {
 124         char *name;
 125
 126         name = cfe_getenv("BOARD_NAME");
 127         return find_machtype_byname(name);
 128 }
 129
 130 static struct {
 131         unsigned long   mach_type;
 132         u16             vendor_id;
 133         u16             board_id;
 134 } zynos_boards[] __initdata = {
 135 #define ZYNOS_BOARD(vi, bi, mt) \
 136         {.vendor_id = (vi), .board_id = (bi), .mach_type = (mt)}
 137
 138 #define ZYXEL_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_ZYXEL, bi, mt)
 139 #define DLINK_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_DLINK, bi, mt)
 140 #define LUCENT_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_LUCENT, bi, mt)
 141         ZYXEL_BOARD(ZYNOS_BOARD_HS100,  MACH_ADM5120_HS100),
 142         ZYXEL_BOARD(ZYNOS_BOARD_P334,   MACH_ADM5120_P334),
 143         ZYXEL_BOARD(ZYNOS_BOARD_P334U,  MACH_ADM5120_P334U),
 144         ZYXEL_BOARD(ZYNOS_BOARD_P334W,  MACH_ADM5120_P334W),
 145         ZYXEL_BOARD(ZYNOS_BOARD_P334WH, MACH_ADM5120_P334WH),
 146         ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 147         ZYXEL_BOARD(ZYNOS_BOARD_P334WT, MACH_ADM5120_P334WT),
 148         ZYXEL_BOARD(ZYNOS_BOARD_P335,   MACH_ADM5120_P335),
 149         ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 150         ZYXEL_BOARD(ZYNOS_BOARD_P335U,  MACH_ADM5120_P335U)
 151 };
 152
 153 static unsigned long __init detect_machtype_bootbase(void)
 154 {
 155         unsigned long ret;
 156         int i;
 157
 158         ret = MACH_ADM5120_GENERIC;
 159         for (i = 0; i < ARRAY_SIZE(zynos_boards); i++) {
 160                 if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 161                         zynos_boards[i].board_id == bootbase_info.board_id) {
 162                         ret = zynos_boards[i].mach_type;
 163                         break;
 164                 }
 165         }
 166
 167         return ret;
 168 }
 169
 170 static struct {
 171         unsigned long   mach_type;
 172         u16     vid;
 173         u16     did;
 174         u16     svid;
 175         u16     sdid;
 176 } mylo_boards[]  __initdata = {
 177 #define MYLO_BOARD(v, d, sv, sd, mt) \
 178         {.vid = (v), .did = (d), .svid = (sv), .sdid = (sd), .mach_type = (mt)}
 179 #define COMPEX_BOARD(d, mt) \
 180         MYLO_BOARD(VENID_COMPEX, (d), VENID_COMPEX, (d), (mt))
 181
 182         COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
 183         COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
 184         COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
 185         COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54G),
 186         COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
 187         COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54AG),
 188         COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WPP54G),
 189         COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WPP54AG),
 190 };
 191
 192 static unsigned long __init detect_machtype_myloader(void)
 193 {
 194         unsigned long ret;
 195         int i;
 196
 197         ret = MACH_ADM5120_GENERIC;
 198         for (i = 0; i < ARRAY_SIZE(mylo_boards); i++) {
 199                 if (mylo_boards[i].vid == myloader_info.vid &&
 200                         mylo_boards[i].did == myloader_info.did &&
 201                         mylo_boards[i].svid == myloader_info.svid &&
 202                         mylo_boards[i].sdid == myloader_info.sdid) {
 203                         ret = mylo_boards[i].mach_type;
 204                         break;
 205                 }
 206         }
 207
 208         return ret;
 209 }
 210
 211 static void __init prom_detect_machtype(void)
 212 {
 213         if (bootbase_present()) {
 214                 adm5120_prom_type = ADM5120_PROM_BOOTBASE;
 215                 mips_machtype = detect_machtype_bootbase();
 216                 return;
 217         }
 218
 219         if (cfe_present()) {
 220                 adm5120_prom_type = ADM5120_PROM_CFE;
 221                 mips_machtype = detect_machtype_cfe();
 222                 return;
 223         }
 224
 225         if (myloader_present()) {
 226                 adm5120_prom_type = ADM5120_PROM_MYLOADER;
 227                 mips_machtype = detect_machtype_myloader();
 228                 return;
 229         }
 230
 231         if (routerboot_present()) {
 232                 adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
 233                 mips_machtype = detect_machtype_routerboot();
 234                 return;
 235         }
 236
 237         if (generic_prom_present()) {
 238                 adm5120_prom_type = ADM5120_PROM_GENERIC;
 239                 mips_machtype = detect_machtype_generic();
 240                 return;
 241         }
 242
 243         mips_machtype = MACH_ADM5120_GENERIC;
 244 }
 245
 246 /* TODO: this is an ugly hack for RouterBOARDS */
 247 extern char _image_cmdline;
 248 static void __init prom_init_cmdline(void)
 249 {
 250         char *cmd;
 251
 252         /* init command line, register a default kernel command line */
 253         cmd = &_image_cmdline + 8;
 254         if (strlen(cmd) > 0)
 255                 strcpy(arcs_cmdline, cmd);
 256         else
 257                 strcpy(arcs_cmdline, CONFIG_CMDLINE);
 258
 259 }
 260
 261 #define UART_READ(r) \
 262         __raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 263 #define UART_WRITE(r, v) \
 264         __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 265
 266 void __init prom_putchar(char ch)
 267 {
 268         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 269         UART_WRITE(UART_REG_DATA, ch);
 270         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 271 }
 272
 273 void __init prom_init(void)
 274 {
 275         mips_machgroup = MACH_GROUP_ADM5120;
 276         prom_detect_machtype();
 277
 278         prom_init_cmdline();
 279 }
 280
 281 void __init prom_free_prom_memory(void)
 282 {
 283         /* We do not have to prom memory to free */
 284 }