target/linux/adm5120/files-2.6.26/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/bootinfo.h>
  19 #include <asm/addrspace.h>
  20
  21 #include <asm/mach-adm5120/adm5120_info.h>
  22 #include <asm/mach-adm5120/adm5120_defs.h>
  23 #include <asm/mach-adm5120/adm5120_uart.h>
  24
  25 #include <prom/cfe.h>
  26 #include <prom/generic.h>
  27 #include <prom/routerboot.h>
  28 #include <prom/myloader.h>
  29 #include <prom/zynos.h>
  30
  31 unsigned int adm5120_prom_type  = ADM5120_PROM_GENERIC;
  32
  33 struct board_desc {
  34         unsigned long   mach_type;
  35         char            *name;
  36 };
  37
  38 #define DEFBOARD(n, mt) { .mach_type = (mt), .name = (n)}
  39 static struct board_desc common_boards[] __initdata = {
  40         /* Cellvision/SparkLAN boards */
  41         DEFBOARD("CAS-630",     MACH_ADM5120_CAS630),
  42         DEFBOARD("CAS-670",     MACH_ADM5120_CAS670),
  43         DEFBOARD("CAS-700",     MACH_ADM5120_CAS700),
  44         DEFBOARD("CAS-771",     MACH_ADM5120_CAS771),
  45         DEFBOARD("CAS-790",     MACH_ADM5120_CAS790),
  46         DEFBOARD("CAS-861",     MACH_ADM5120_CAS861),
  47         DEFBOARD("NFS-101U",    MACH_ADM5120_NFS101U),
  48         /* Compex boards */
  49         DEFBOARD("WP54G-WRT",   MACH_ADM5120_WP54G_WRT),
  50         /* Edimax boards */
  51         DEFBOARD("BR-6104K",    MACH_ADM5120_BR6104K),
  52         DEFBOARD("BR-6104KP",   MACH_ADM5120_BR6104KP),
  53         DEFBOARD("BR-6104WG",   MACH_ADM5120_BR61X4WG),
  54         DEFBOARD("BR-6114WG",   MACH_ADM5120_BR61X4WG),
  55         /* Infineon boards */
  56         DEFBOARD("EASY 5120P-ATA",      MACH_ADM5120_EASY5120PATA),
  57         DEFBOARD("EASY 5120-RT",        MACH_ADM5120_EASY5120RT),
  58         DEFBOARD("EASY 5120-WVoIP",     MACH_ADM5120_EASY5120WVOIP),
  59         DEFBOARD("EASY 83000",          MACH_ADM5120_EASY83000),
  60         /* Mikrotik RouterBOARDs */
  61         DEFBOARD("111",         MACH_ADM5120_RB_11X),
  62         DEFBOARD("112",         MACH_ADM5120_RB_11X),
  63         DEFBOARD("133",         MACH_ADM5120_RB_133),
  64         DEFBOARD("133C",        MACH_ADM5120_RB_133C),
  65         DEFBOARD("133C3",       MACH_ADM5120_RB_133C),
  66         DEFBOARD("150",         MACH_ADM5120_RB_153), /* it's intentional */
  67         DEFBOARD("153",         MACH_ADM5120_RB_153),
  68         DEFBOARD("192",         MACH_ADM5120_RB_192),
  69         DEFBOARD("miniROUTER",  MACH_ADM5120_RB_150),
  70         /* Motorola boards */
  71         DEFBOARD("Powerline MU Gateway",MACH_ADM5120_PMUGW),
  72 };
  73
  74 static unsigned long __init find_machtype_byname(char *name)
  75 {
  76         unsigned long ret;
  77         int i;
  78
  79         ret = MACH_ADM5120_GENERIC;
  80         if (name == NULL)
  81                 goto out;
  82
  83         if (*name == '\0')
  84                 goto out;
  85
  86         for (i = 0; i < ARRAY_SIZE(common_boards); i++) {
  87                 if (strcmp(common_boards[i].name, name) == 0) {
  88                         ret = common_boards[i].mach_type;
  89                         break;
  90                 }
  91         }
  92
  93 out:
  94         return ret;
  95 }
  96
  97 static unsigned long __init detect_machtype_routerboot(void)
  98 {
  99         char *name;
 100
 101         name = routerboot_get_boardname();
 102         return find_machtype_byname(name);
 103 }
 104
 105 static unsigned long __init detect_machtype_generic(void)
 106 {
 107         char *name;
 108
 109         name = generic_prom_getenv("board_name");
 110         return find_machtype_byname(name);
 111 }
 112
 113 unsigned long __init detect_machtype_cfe(void)
 114 {
 115         char *name;
 116
 117         name = cfe_getenv("BOARD_NAME");
 118         return find_machtype_byname(name);
 119 }
 120
 121 static struct {
 122         unsigned long   mach_type;
 123         u16             vendor_id;
 124         u16             board_id;
 125 } zynos_boards[] __initdata = {
 126 #define ZYNOS_BOARD(vi, bi, mt) \
 127         {.vendor_id = (vi), .board_id = (bi), .mach_type = (mt)}
 128
 129 #define ZYXEL_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_ZYXEL, bi, mt)
 130 #define DLINK_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_DLINK, bi, mt)
 131 #define LUCENT_BOARD(bi, mt) ZYNOS_BOARD(ZYNOS_VENDOR_ID_LUCENT, bi, mt)
 132         ZYXEL_BOARD(ZYNOS_BOARD_HS100,  MACH_ADM5120_HS100),
 133         ZYXEL_BOARD(ZYNOS_BOARD_P334U,  MACH_ADM5120_P334U),
 134         ZYXEL_BOARD(ZYNOS_BOARD_P334W,  MACH_ADM5120_P334W),
 135         ZYXEL_BOARD(ZYNOS_BOARD_P334WH, MACH_ADM5120_P334WH),
 136         ZYXEL_BOARD(ZYNOS_BOARD_P334WHD, MACH_ADM5120_P334WHD),
 137         ZYXEL_BOARD(ZYNOS_BOARD_P334WT, MACH_ADM5120_P334WT),
 138         ZYXEL_BOARD(ZYNOS_BOARD_P334WT_ALT,     MACH_ADM5120_P334WT),
 139         ZYXEL_BOARD(ZYNOS_BOARD_P335,   MACH_ADM5120_P335),
 140         ZYXEL_BOARD(ZYNOS_BOARD_P335PLUS, MACH_ADM5120_P335PLUS),
 141         ZYXEL_BOARD(ZYNOS_BOARD_P335U,  MACH_ADM5120_P335U)
 142 };
 143
 144 static unsigned long __init detect_machtype_bootbase(void)
 145 {
 146         int i;
 147
 148         for (i = 0; i < ARRAY_SIZE(zynos_boards); i++) {
 149                 if (zynos_boards[i].vendor_id == bootbase_info.vendor_id &&
 150                         zynos_boards[i].board_id == bootbase_info.board_id) {
 151                         return zynos_boards[i].mach_type;
 152                         break;
 153                 }
 154         }
 155
 156         printk(KERN_WARNING "Unknown ZyXEL model (%u)\n",
 157                                 bootbase_info.board_id);
 158         return MACH_ADM5120_GENERIC;
 159 }
 160
 161 static struct {
 162         unsigned long   mach_type;
 163         u16     vid;
 164         u16     did;
 165         u16     svid;
 166         u16     sdid;
 167 } mylo_boards[]  __initdata = {
 168 #define MYLO_BOARD(v, d, sv, sd, mt) \
 169         {.vid = (v), .did = (d), .svid = (sv), .sdid = (sd), .mach_type = (mt)}
 170 #define COMPEX_BOARD(d, mt) \
 171         MYLO_BOARD(VENID_COMPEX, (d), VENID_COMPEX, (d), (mt))
 172
 173         COMPEX_BOARD(DEVID_COMPEX_NP27G, MACH_ADM5120_NP27G),
 174         COMPEX_BOARD(DEVID_COMPEX_NP28G, MACH_ADM5120_NP28G),
 175         COMPEX_BOARD(DEVID_COMPEX_NP28GHS, MACH_ADM5120_NP28GHS),
 176         COMPEX_BOARD(DEVID_COMPEX_WP54G, MACH_ADM5120_WP54),
 177         COMPEX_BOARD(DEVID_COMPEX_WP54Gv1C, MACH_ADM5120_WP54Gv1C),
 178         COMPEX_BOARD(DEVID_COMPEX_WP54AG, MACH_ADM5120_WP54),
 179         COMPEX_BOARD(DEVID_COMPEX_WPP54G, MACH_ADM5120_WP54),
 180         COMPEX_BOARD(DEVID_COMPEX_WPP54AG, MACH_ADM5120_WP54),
 181 };
 182
 183 static unsigned long __init detect_machtype_myloader(void)
 184 {
 185         unsigned long ret;
 186         int i;
 187
 188         ret = MACH_ADM5120_GENERIC;
 189         for (i = 0; i < ARRAY_SIZE(mylo_boards); i++) {
 190                 if (mylo_boards[i].vid == myloader_info.vid &&
 191                         mylo_boards[i].did == myloader_info.did &&
 192                         mylo_boards[i].svid == myloader_info.svid &&
 193                         mylo_boards[i].sdid == myloader_info.sdid) {
 194                         ret = mylo_boards[i].mach_type;
 195                         break;
 196                 }
 197         }
 198
 199         return ret;
 200 }
 201
 202 static void __init prom_detect_machtype(void)
 203 {
 204         if (bootbase_present()) {
 205                 adm5120_prom_type = ADM5120_PROM_BOOTBASE;
 206                 mips_machtype = detect_machtype_bootbase();
 207                 return;
 208         }
 209
 210         if (cfe_present()) {
 211                 adm5120_prom_type = ADM5120_PROM_CFE;
 212                 mips_machtype = detect_machtype_cfe();
 213                 return;
 214         }
 215
 216         if (myloader_present()) {
 217                 adm5120_prom_type = ADM5120_PROM_MYLOADER;
 218                 mips_machtype = detect_machtype_myloader();
 219                 return;
 220         }
 221
 222         if (routerboot_present()) {
 223                 adm5120_prom_type = ADM5120_PROM_ROUTERBOOT;
 224                 mips_machtype = detect_machtype_routerboot();
 225                 return;
 226         }
 227
 228         if (generic_prom_present()) {
 229                 adm5120_prom_type = ADM5120_PROM_GENERIC;
 230                 mips_machtype = detect_machtype_generic();
 231                 return;
 232         }
 233
 234         mips_machtype = MACH_ADM5120_GENERIC;
 235 }
 236
 237 /* TODO: this is an ugly hack for RouterBOARDS */
 238 extern char _image_cmdline;
 239 static void __init prom_init_cmdline(void)
 240 {
 241         char *cmd;
 242
 243         /* init command line, register a default kernel command line */
 244         cmd = &_image_cmdline + 8;
 245         if (strlen(cmd) > 0)
 246                 strlcpy(arcs_cmdline, cmd, sizeof(arcs_cmdline));
 247
 248 }
 249
 250 #define UART_READ(r) \
 251         __raw_readl((void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 252 #define UART_WRITE(r, v) \
 253         __raw_writel((v), (void __iomem *)(KSEG1ADDR(ADM5120_UART0_BASE)+(r)))
 254
 255 void __init prom_putchar(char ch)
 256 {
 257         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 258         UART_WRITE(UART_REG_DATA, ch);
 259         while ((UART_READ(UART_REG_FLAG) & UART_FLAG_TXFE) == 0);
 260 }
 261
 262 void __init prom_init(void)
 263 {
 264         prom_detect_machtype();
 265         prom_init_cmdline();
 266 }
 267
 268 void __init prom_free_prom_memory(void)
 269 {
 270         /* We do not have to prom memory to free */
 271 }