target/linux/adm5120-2.6/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@freemail.hu>
   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
  31 #include <asm/bootinfo.h>
  32 #include <asm/addrspace.h>
  33
  34 #include <asm/mach-adm5120/adm5120_info.h>
  35 #include <asm/mach-adm5120/adm5120_defs.h>
  36 #include <asm/mach-adm5120/adm5120_uart.h>
  37
  38 #include <prom/cfe.h>
  39 #include <prom/generic.h>
  40 #include <prom/routerboot.h>
  41 #include <prom/myloader.h>
  42 #include <prom/zynos.h>
  43
  44 unsigned int adm5120_prom_type  = ADM5120_PROM_GENERIC;
  45
  46 struct board_desc {
  47         unsigned long   mach_type;
  48         char            *name;
  49 };
  50
  51 #define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
  52 static struct board_desc common_boards[] __initdata = {
  53         /* Cellvision/SparkLAN boards */
  54         DEFBOARD("CAS-630",             MACH_ADM5120_CAS630),
  55         DEFBOARD("CAS-670",             MACH_ADM5120_CAS670),
  56         DEFBOARD("CAS-771",             MACH_ADM5120_CAS771),
  57         DEFBOARD("CAS-790",             MACH_ADM5120_CAS790),
  58         DEFBOARD("CAS-861",             MACH_ADM5120_CAS861),
  59         /* Compex boards */
  60         DEFBOARD("WP54G-WRT",           MACH_ADM5120_WP54G_WRT),
  61         /* Edimax boards */
  62         DEFBOARD("BR-6104K",            MACH_ADM5120_BR6104K),
  63         DEFBOARD("BR-6104KP",           MACH_ADM5120_BR6104K),
  64         /* Infineon boards */
  65         DEFBOARD("EASY 5120",           MACH_ADM5120_EASY5120),
  66         DEFBOARD("EASY 5120-RT",        MACH_ADM5120_EASY5120RT),
  67         DEFBOARD("EASY 5120P-ATA",      MACH_ADM5120_EASY5120PATA),
  68         DEFBOARD("EASY 83000",          MACH_ADM5120_EASY83000),
  69         /* Mikrotik RouterBOARDs */
  70         DEFBOARD("111",                 MACH_ADM5120_RB_111),
  71         DEFBOARD("112",                 MACH_ADM5120_RB_112),
  72         DEFBOARD("133",                 MACH_ADM5120_RB_133),
  73         DEFBOARD("133C",                MACH_ADM5120_RB_133C),
  74         DEFBOARD("miniROUTER",          MACH_ADM5120_RB_150),
  75         DEFBOARD("153",                 MACH_ADM5120_RB_153),
  76 };
  77
  78 static unsigned long __init find_machtype_byname(char *name)
  79 {
  80         unsigned long ret;
  81         int i;
  82
  83         ret = MACH_ADM5120_GENERIC;
  84         if (name == NULL)
  85                 goto out;
  86
  87         if (*name == '\0')
  88                 goto out;
  89
  90         for (i=0; i<ARRAY_SIZE(common_boards); i++) {
  91                 if (strcmp(common_boards[i].name, name) == 0) {
  92                         ret = common_boards[i].mach_type;
  93                         break;
  94                 }
  95         }
  96
  97 out:
  98         return ret;
  99 }
 100
 101 static unsigned long __init detect_machtype_routerboot(void)
 102 {
 103         char *name;
 104
 105         name = routerboot_get_boardname();
 106         return find_machtype_byname(name);
 107 }
 108
 109 static unsigned long __init detect_machtype_generic(void)
 110 {
 111         char *name;
 112
 113         name = generic_prom_getenv("board_name");
 114         return find_machtype_byname(name);
 115 }
 116
 117 unsigned long __init detect_machtype_cfe(void)
 118 {
 119         char *name;
 120
 121         name = cfe_getenv("BOARD_NAME");
 122         return find_machtype_byname(name);
 123 }
 124
 125 static struct {
 126         unsigned long   mach_type;
 127         u16             vendor_id;
 128         u16             board_id;
 129 } zynos_boards[] __initdata = {
 130 #define ZYNOS_BOARD(vi, bi, mt) { .vendor_id = (vi), .board_id = (bi), \
 131                 .mach_type = (mt) }
 132
 133 #define ZYXEL_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_ZYXEL, bi, mt)
 134 #define DLINK_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_DLINK, bi, mt)
 135 #define LUCENT_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_LUCENT, bi, mt)
 136         ZYXEL_BOARD(ZYNOS_BOARD_HS100,  MACH_ADM5120_HS100),
 137         ZYXEL_BOARD(ZYNOS_BOARD_P334,   MACH_ADM5120_P334),
 138         ZYXEL_BOARD(ZYNOS_BOARD_P334U,  MACH_ADM5120_P334U),
 139         ZYXEL_BOARD(ZYNOS_BOARD_P334W,  MACH_ADM5120_P334W),
 140         ZYXEL_BOARD(ZYNOS_BOARD_P334WH, MACH_ADM5120_P334WH),
 141         ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 142         ZYXEL_BOARD(ZYNOS_BOARD_P334WT, MACH_ADM5120_P334WT),
 143         ZYXEL_BOARD(ZYNOS_BOARD_P335,   MACH_ADM5120_P335),
 144         ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 145         ZYXEL_BOARD(ZYNOS_BOARD_P335U,  MACH_ADM5120_P335U)
 146 };
 147
 148 static unsigned long __init detect_machtype_bootbase(void)
 149 {
 150         unsigned long ret;
 151         int i;
 152
 153         ret = MACH_ADM5120_GENERIC;
 154         for (i=0; i<ARRAY_SIZE(zynos_boards); i++) {
 155                 if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 156                         zynos_boards[i].board_id == bootbase_info.board_id) {
 157                         ret = zynos_boards[i].mach_type;
 158                         break;
 159                 }
 160         }
 161
 162         return ret;
 163 }
 164
 165 static struct {
 166         unsigned long   mach_type;
 167         u16     vid;
 168         u16     did;
 169         u16     svid;
 170         u16     sdid;
 171 } mylo_boards[]  __initdata = {
 172 #define MYLO_BOARD(v,d,sv,sd,mt) { .vid = (v), .did = (d), .svid = (sv), \
 173         .sdid = (sd), .mach_type = (mt) }
 174 #define COMPEX_BOARD(d,mt) MYLO_BOARD(VENID_COMPEX,(d),VENID_COMPEX,(d),(mt))
 175
 176         COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
 177         COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
 178         COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
 179         COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54G),
 180         COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
 181         COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54AG),
 182         COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WPP54G),
 183         COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WPP54AG),
 184 };
 185
 186 static unsigned long __init detect_machtype_myloader(void)
 187 {
 188         unsigned long ret;
 189         int i;
 190
 191         ret = MACH_ADM5120_GENERIC;
 192         for (i=0; i<ARRAY_SIZE(mylo_boards); i++) {
 193                 if (mylo_boards[i].vid == myloader_info.vid &&
 194                         mylo_boards[i].did == myloader_info.did &&
 195                         mylo_boards[i].svid == myloader_info.svid &&
 196                         mylo_boards[i].sdid == myloader_info.sdid) {
 197                         ret = mylo_boards[i].mach_type;
 198                         break;
 199                 }
 200         }
 201
 202         return ret;
 203 }
 204
 205 static void __init prom_detect_machtype(void)
 206 {
 207         if (bootbase_present()) {
 208                 adm5120_prom_type = ADM5120_PROM_BOOTBASE;
 209                 mips_machtype = detect_machtype_bootbase();
 210                 return;
 211         }
 212
 213         if (cfe_present()) {
 214                 adm5120_prom_type = ADM5120_PROM_CFE;
 215                 mips_machtype = detect_machtype_cfe();
 216                 return;
 217         }
 218
 219         if (myloader_present()) {
 220                 adm5120_prom_type = ADM5120_PROM_MYLOADER;
 221                 mips_machtype = detect_machtype_myloader();
 222                 return;
 223         }
 224
 225         if (routerboot_present()) {
 226                 adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
 227                 mips_machtype = detect_machtype_routerboot();
 228                 return;
 229         }
 230
 231         if (generic_prom_present()) {
 232                 adm5120_prom_type = ADM5120_PROM_GENERIC;
 233                 mips_machtype = detect_machtype_generic();
 234                 return;
 235         }
 236
 237         mips_machtype = MACH_ADM5120_GENERIC;
 238 }
 239
 240 /* TODO: this is an ugly hack for RouterBOARDS */
 241 extern char _image_cmdline;
 242 static void __init prom_init_cmdline(void)
 243 {
 244         char *cmd;
 245
 246         /* init command line, register a default kernel command line */
 247         cmd = &_image_cmdline + 8;
 248         if( strlen(cmd) > 0) strcpy( &(arcs_cmdline[0]), cmd);
 249                 else strcpy(&(arcs_cmdline[0]), CONFIG_CMDLINE);
 250
 251 }
 252
 253 #define UART_READ(r) *(volatile u32 *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r))
 254 #define UART_WRITE(r,v) *(volatile u32 *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r))=(v)
 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         mips_machgroup = MACH_GROUP_ADM5120;
 266         prom_detect_machtype();
 267
 268         prom_init_cmdline();
 269 }
 270
 271 void __init prom_free_prom_memory(void)
 272 {
 273         /* We do not have to prom memory to free */
 274 }