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 modify it
  10  *  under the terms of the GNU General Public License version 2 as published
  11  *  by the Free Software Foundation.
  12  *
  13  */
  14
  15 #include <linux/init.h>
  16 #include <linux/kernel.h>
  17 #include <linux/string.h>
  18 #include <linux/mm.h>
  19 #include <linux/io.h>
  20
  21 #include <asm/bootinfo.h>
  22 #include <asm/addrspace.h>
  23
  24 #include <adm5120_info.h>
  25 #include <adm5120_defs.h>
  26 #include <adm5120_uart.h>
  27
  28 #include <prom/cfe.h>
  29 #include <prom/generic.h>
  30 #include <prom/routerboot.h>
  31 #include <prom/myloader.h>
  32 #include <prom/zynos.h>
  33
  34 unsigned int adm5120_prom_type  = ADM5120_PROM_GENERIC;
  35
  36 struct board_desc {
  37         unsigned long   mach_type;
  38         char            *name;
  39 };
  40
  41 #define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
  42 static struct board_desc common_boards[] __initdata = {
  43         /* Cellvision/SparkLAN boards */
  44         DEFBOARD("CAS-630",     MACH_ADM5120_CAS630),
  45         DEFBOARD("CAS-670",     MACH_ADM5120_CAS670),
  46         DEFBOARD("CAS-700",     MACH_ADM5120_CAS700),
  47         DEFBOARD("CAS-771",     MACH_ADM5120_CAS771),
  48         DEFBOARD("CAS-790",     MACH_ADM5120_CAS790),
  49         DEFBOARD("CAS-861",     MACH_ADM5120_CAS861),
  50         DEFBOARD("NFS-101U",    MACH_ADM5120_NFS101U),
  51         /* Compex boards */
  52         DEFBOARD("WP54G-WRT",   MACH_ADM5120_WP54G_WRT),
  53         /* Edimax boards */
  54         DEFBOARD("BR-6104K",    MACH_ADM5120_BR6104K),
  55         DEFBOARD("BR-6104KP",   MACH_ADM5120_BR6104K),
  56         DEFBOARD("BR-6104WG",   MACH_ADM5120_BR61x4WG),
  57         DEFBOARD("BR-6114WG",   MACH_ADM5120_BR61x4WG),
  58         /* Infineon boards */
  59         DEFBOARD("EASY 5120P-ATA",      MACH_ADM5120_EASY5120PATA),
  60         DEFBOARD("EASY 5120-RT",        MACH_ADM5120_EASY5120RT),
  61         DEFBOARD("EASY 5120-WVoIP",     MACH_ADM5120_EASY5120WVOIP),
  62         DEFBOARD("EASY 83000",          MACH_ADM5120_EASY83000),
  63         /* Mikrotik RouterBOARDs */
  64         DEFBOARD("111",         MACH_ADM5120_RB_111),
  65         DEFBOARD("112",         MACH_ADM5120_RB_112),
  66         DEFBOARD("133",         MACH_ADM5120_RB_133),
  67         DEFBOARD("133C",        MACH_ADM5120_RB_133C),
  68         DEFBOARD("133C3",       MACH_ADM5120_RB_133C),
  69         DEFBOARD("150",         MACH_ADM5120_RB_153), /* it's intentional */
  70         DEFBOARD("153",         MACH_ADM5120_RB_153),
  71         DEFBOARD("192",         MACH_ADM5120_RB_192),
  72         DEFBOARD("miniROUTER",  MACH_ADM5120_RB_150),
  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_P334,   MACH_ADM5120_P334),
 135         ZYXEL_BOARD(ZYNOS_BOARD_P334U,  MACH_ADM5120_P334U),
 136         ZYXEL_BOARD(ZYNOS_BOARD_P334W,  MACH_ADM5120_P334W),
 137         ZYXEL_BOARD(ZYNOS_BOARD_P334WH, MACH_ADM5120_P334WH),
 138         ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 139         ZYXEL_BOARD(ZYNOS_BOARD_P334WT, MACH_ADM5120_P334WT),
 140         ZYXEL_BOARD(ZYNOS_BOARD_P334WT_ALT,     MACH_ADM5120_P334WT),
 141         ZYXEL_BOARD(ZYNOS_BOARD_P335,   MACH_ADM5120_P335),
 142         ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 143         ZYXEL_BOARD(ZYNOS_BOARD_P335U,  MACH_ADM5120_P335U)
 144 };
 145
 146 static unsigned long __init detect_machtype_bootbase(void)
 147 {
 148         int i;
 149
 150         for (i = 0; i < ARRAY_SIZE(zynos_boards); i++) {
 151                 if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 152                         zynos_boards[i].board_id == bootbase_info.board_id) {
 153                         return zynos_boards[i].mach_type;
 154                         break;
 155                 }
 156         }
 157
 158         printk(KERN_WARNING "Unknown ZyXEL model (%u)\n",
 159                                 bootbase_info.board_id);
 160         return MACH_ADM5120_GENERIC;
 161 }
 162
 163 static struct {
 164         unsigned long   mach_type;
 165         u16     vid;
 166         u16     did;
 167         u16     svid;
 168         u16     sdid;
 169 } mylo_boards[]  __initdata = {
 170 #define MYLO_BOARD(v, d, sv, sd, mt) \
 171         {.vid = (v), .did = (d), .svid = (sv), .sdid = (sd), .mach_type = (mt)}
 172 #define COMPEX_BOARD(d, mt) \
 173         MYLO_BOARD(VENID_COMPEX, (d), VENID_COMPEX, (d), (mt))
 174
 175         COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
 176         COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
 177         COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
 178         COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54G),
 179         COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
 180         COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54AG),
 181         COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WPP54G),
 182         COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WPP54AG),
 183 };
 184
 185 static unsigned long __init detect_machtype_myloader(void)
 186 {
 187         unsigned long ret;
 188         int i;
 189
 190         ret = MACH_ADM5120_GENERIC;
 191         for (i = 0; i < ARRAY_SIZE(mylo_boards); i++) {
 192                 if (mylo_boards[i].vid == myloader_info.vid &&
 193                         mylo_boards[i].did == myloader_info.did &&
 194                         mylo_boards[i].svid == myloader_info.svid &&
 195                         mylo_boards[i].sdid == myloader_info.sdid) {
 196                         ret = mylo_boards[i].mach_type;
 197                         break;
 198                 }
 199         }
 200
 201         return ret;
 202 }
 203
 204 static void __init prom_detect_machtype(void)
 205 {
 206         if (bootbase_present()) {
 207                 adm5120_prom_type = ADM5120_PROM_BOOTBASE;
 208                 mips_machtype = detect_machtype_bootbase();
 209                 return;
 210         }
 211
 212         if (cfe_present()) {
 213                 adm5120_prom_type = ADM5120_PROM_CFE;
 214                 mips_machtype = detect_machtype_cfe();
 215                 return;
 216         }
 217
 218         if (myloader_present()) {
 219                 adm5120_prom_type = ADM5120_PROM_MYLOADER;
 220                 mips_machtype = detect_machtype_myloader();
 221                 return;
 222         }
 223
 224         if (routerboot_present()) {
 225                 adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
 226                 mips_machtype = detect_machtype_routerboot();
 227                 return;
 228         }
 229
 230         if (generic_prom_present()) {
 231                 adm5120_prom_type = ADM5120_PROM_GENERIC;
 232                 mips_machtype = detect_machtype_generic();
 233                 return;
 234         }
 235
 236         mips_machtype = MACH_ADM5120_GENERIC;
 237 }
 238
 239 /* TODO: this is an ugly hack for RouterBOARDS */
 240 extern char _image_cmdline;
 241 static void __init prom_init_cmdline(void)
 242 {
 243         char *cmd;
 244
 245         /* init command line, register a default kernel command line */
 246         cmd = &_image_cmdline + 8;
 247         if (strlen(cmd) > 0)
 248                 strcpy(arcs_cmdline, cmd);
 249         else
 250                 strcpy(arcs_cmdline, CONFIG_CMDLINE);
 251
 252 }
 253
 254 #define UART_READ(r) \
 255         __raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 256 #define UART_WRITE(r, v) \
 257         __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 258
 259 void __init prom_putchar(char ch)
 260 {
 261         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 262         UART_WRITE(UART_REG_DATA, ch);
 263         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 264 }
 265
 266 void __init prom_init(void)
 267 {
 268         prom_detect_machtype();
 269
 270         prom_init_cmdline();
 271 }
 272
 273 void __init prom_free_prom_memory(void)
 274 {
 275         /* We do not have to prom memory to free */
 276 }