Brian Murphy | 1f21d2b | 2007-08-21 22:34:16 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Thomas Horsten <thh@lasat.com> |
| 3 | * Copyright (C) 2000 LASAT Networks A/S. |
| 4 | * |
| 5 | * This program is free software; you can distribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License (Version 2) as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * for more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along |
| 15 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 16 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. |
| 17 | * |
| 18 | * Routines specific to the LASAT boards |
| 19 | */ |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/crc32.h> |
| 22 | #include <asm/lasat/lasat.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/string.h> |
| 25 | #include <linux/ctype.h> |
| 26 | #include <asm/bootinfo.h> |
| 27 | #include <asm/addrspace.h> |
| 28 | #include "at93c.h" |
| 29 | /* New model description table */ |
| 30 | #include "lasat_models.h" |
| 31 | |
| 32 | #define EEPROM_CRC(data, len) (~crc32(~0, data, len)) |
| 33 | |
| 34 | struct lasat_info lasat_board_info; |
| 35 | |
| 36 | void update_bcastaddr(void); |
| 37 | |
| 38 | int EEPROMRead(unsigned int pos, unsigned char *data, int len) |
| 39 | { |
| 40 | int i; |
| 41 | |
| 42 | for (i = 0; i < len; i++) |
| 43 | *data++ = at93c_read(pos++); |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | int EEPROMWrite(unsigned int pos, unsigned char *data, int len) |
| 49 | { |
| 50 | int i; |
| 51 | |
| 52 | for (i = 0; i < len; i++) |
| 53 | at93c_write(pos++, *data++); |
| 54 | |
| 55 | return 0; |
| 56 | } |
| 57 | |
| 58 | static void init_flash_sizes(void) |
| 59 | { |
| 60 | unsigned long *lb = lasat_board_info.li_flashpart_base; |
| 61 | unsigned long *ls = lasat_board_info.li_flashpart_size; |
| 62 | int i; |
| 63 | |
| 64 | ls[LASAT_MTD_BOOTLOADER] = 0x40000; |
| 65 | ls[LASAT_MTD_SERVICE] = 0xC0000; |
| 66 | ls[LASAT_MTD_NORMAL] = 0x100000; |
| 67 | |
| 68 | if (mips_machtype == MACH_LASAT_100) { |
| 69 | lasat_board_info.li_flash_base = 0x1e000000; |
| 70 | |
| 71 | lb[LASAT_MTD_BOOTLOADER] = 0x1e400000; |
| 72 | |
| 73 | if (lasat_board_info.li_flash_size > 0x200000) { |
| 74 | ls[LASAT_MTD_CONFIG] = 0x100000; |
| 75 | ls[LASAT_MTD_FS] = 0x500000; |
| 76 | } |
| 77 | } else { |
| 78 | lasat_board_info.li_flash_base = 0x10000000; |
| 79 | |
| 80 | if (lasat_board_info.li_flash_size < 0x1000000) { |
| 81 | lb[LASAT_MTD_BOOTLOADER] = 0x10000000; |
| 82 | ls[LASAT_MTD_CONFIG] = 0x100000; |
| 83 | if (lasat_board_info.li_flash_size >= 0x400000) |
| 84 | ls[LASAT_MTD_FS] = |
| 85 | lasat_board_info.li_flash_size - 0x300000; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | for (i = 1; i < LASAT_MTD_LAST; i++) |
| 90 | lb[i] = lb[i-1] + ls[i-1]; |
| 91 | } |
| 92 | |
| 93 | int lasat_init_board_info(void) |
| 94 | { |
| 95 | int c; |
| 96 | unsigned long crc; |
| 97 | unsigned long cfg0, cfg1; |
| 98 | const struct product_info *ppi; |
| 99 | int i_n_base_models = N_BASE_MODELS; |
| 100 | const char * const * i_txt_base_models = txt_base_models; |
| 101 | int i_n_prids = N_PRIDS; |
| 102 | |
| 103 | memset(&lasat_board_info, 0, sizeof(lasat_board_info)); |
| 104 | |
| 105 | /* First read the EEPROM info */ |
| 106 | EEPROMRead(0, (unsigned char *)&lasat_board_info.li_eeprom_info, |
| 107 | sizeof(struct lasat_eeprom_struct)); |
| 108 | |
| 109 | /* Check the CRC */ |
| 110 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), |
| 111 | sizeof(struct lasat_eeprom_struct) - 4); |
| 112 | |
| 113 | if (crc != lasat_board_info.li_eeprom_info.crc32) { |
| 114 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM CRC does " |
| 115 | "not match calculated, attempting to soldier on...\n"); |
| 116 | } |
| 117 | |
| 118 | if (lasat_board_info.li_eeprom_info.version != LASAT_EEPROM_VERSION) { |
| 119 | printk(KERN_WARNING "WARNING...\nWARNING...\nEEPROM version " |
| 120 | "%d, wanted version %d, attempting to soldier on...\n", |
| 121 | (unsigned int)lasat_board_info.li_eeprom_info.version, |
| 122 | LASAT_EEPROM_VERSION); |
| 123 | } |
| 124 | |
| 125 | cfg0 = lasat_board_info.li_eeprom_info.cfg[0]; |
| 126 | cfg1 = lasat_board_info.li_eeprom_info.cfg[1]; |
| 127 | |
| 128 | if (LASAT_W0_DSCTYPE(cfg0) != 1) { |
| 129 | printk(KERN_WARNING "WARNING...\nWARNING...\n" |
| 130 | "Invalid configuration read from EEPROM, attempting to " |
| 131 | "soldier on..."); |
| 132 | } |
| 133 | /* We have a valid configuration */ |
| 134 | |
| 135 | switch (LASAT_W0_SDRAMBANKSZ(cfg0)) { |
| 136 | case 0: |
| 137 | lasat_board_info.li_memsize = 0x0800000; |
| 138 | break; |
| 139 | case 1: |
| 140 | lasat_board_info.li_memsize = 0x1000000; |
| 141 | break; |
| 142 | case 2: |
| 143 | lasat_board_info.li_memsize = 0x2000000; |
| 144 | break; |
| 145 | case 3: |
| 146 | lasat_board_info.li_memsize = 0x4000000; |
| 147 | break; |
| 148 | case 4: |
| 149 | lasat_board_info.li_memsize = 0x8000000; |
| 150 | break; |
| 151 | default: |
| 152 | lasat_board_info.li_memsize = 0; |
| 153 | } |
| 154 | |
| 155 | switch (LASAT_W0_SDRAMBANKS(cfg0)) { |
| 156 | case 0: |
| 157 | break; |
| 158 | case 1: |
| 159 | lasat_board_info.li_memsize *= 2; |
| 160 | break; |
| 161 | default: |
| 162 | break; |
| 163 | } |
| 164 | |
| 165 | switch (LASAT_W0_BUSSPEED(cfg0)) { |
| 166 | case 0x0: |
| 167 | lasat_board_info.li_bus_hz = 60000000; |
| 168 | break; |
| 169 | case 0x1: |
| 170 | lasat_board_info.li_bus_hz = 66000000; |
| 171 | break; |
| 172 | case 0x2: |
| 173 | lasat_board_info.li_bus_hz = 66666667; |
| 174 | break; |
| 175 | case 0x3: |
| 176 | lasat_board_info.li_bus_hz = 80000000; |
| 177 | break; |
| 178 | case 0x4: |
| 179 | lasat_board_info.li_bus_hz = 83333333; |
| 180 | break; |
| 181 | case 0x5: |
| 182 | lasat_board_info.li_bus_hz = 100000000; |
| 183 | break; |
| 184 | } |
| 185 | |
| 186 | switch (LASAT_W0_CPUCLK(cfg0)) { |
| 187 | case 0x0: |
| 188 | lasat_board_info.li_cpu_hz = |
| 189 | lasat_board_info.li_bus_hz; |
| 190 | break; |
| 191 | case 0x1: |
| 192 | lasat_board_info.li_cpu_hz = |
| 193 | lasat_board_info.li_bus_hz + |
| 194 | (lasat_board_info.li_bus_hz >> 1); |
| 195 | break; |
| 196 | case 0x2: |
| 197 | lasat_board_info.li_cpu_hz = |
| 198 | lasat_board_info.li_bus_hz + |
| 199 | lasat_board_info.li_bus_hz; |
| 200 | break; |
| 201 | case 0x3: |
| 202 | lasat_board_info.li_cpu_hz = |
| 203 | lasat_board_info.li_bus_hz + |
| 204 | lasat_board_info.li_bus_hz + |
| 205 | (lasat_board_info.li_bus_hz >> 1); |
| 206 | break; |
| 207 | case 0x4: |
| 208 | lasat_board_info.li_cpu_hz = |
| 209 | lasat_board_info.li_bus_hz + |
| 210 | lasat_board_info.li_bus_hz + |
| 211 | lasat_board_info.li_bus_hz; |
| 212 | break; |
| 213 | } |
| 214 | |
| 215 | /* Flash size */ |
| 216 | switch (LASAT_W1_FLASHSIZE(cfg1)) { |
| 217 | case 0: |
| 218 | lasat_board_info.li_flash_size = 0x200000; |
| 219 | break; |
| 220 | case 1: |
| 221 | lasat_board_info.li_flash_size = 0x400000; |
| 222 | break; |
| 223 | case 2: |
| 224 | lasat_board_info.li_flash_size = 0x800000; |
| 225 | break; |
| 226 | case 3: |
| 227 | lasat_board_info.li_flash_size = 0x1000000; |
| 228 | break; |
| 229 | case 4: |
| 230 | lasat_board_info.li_flash_size = 0x2000000; |
| 231 | break; |
| 232 | } |
| 233 | |
| 234 | init_flash_sizes(); |
| 235 | |
| 236 | lasat_board_info.li_bmid = LASAT_W0_BMID(cfg0); |
| 237 | lasat_board_info.li_prid = lasat_board_info.li_eeprom_info.prid; |
| 238 | if (lasat_board_info.li_prid == 0xffff || lasat_board_info.li_prid == 0) |
| 239 | lasat_board_info.li_prid = lasat_board_info.li_bmid; |
| 240 | |
| 241 | /* Base model stuff */ |
| 242 | if (lasat_board_info.li_bmid > i_n_base_models) |
| 243 | lasat_board_info.li_bmid = i_n_base_models; |
| 244 | strcpy(lasat_board_info.li_bmstr, |
| 245 | i_txt_base_models[lasat_board_info.li_bmid]); |
| 246 | |
| 247 | /* Product ID dependent values */ |
| 248 | c = lasat_board_info.li_prid; |
| 249 | if (c >= i_n_prids) { |
| 250 | strcpy(lasat_board_info.li_namestr, "Unknown Model"); |
| 251 | strcpy(lasat_board_info.li_typestr, "Unknown Type"); |
| 252 | } else { |
| 253 | ppi = &vendor_info_table[0].vi_product_info[c]; |
| 254 | strcpy(lasat_board_info.li_namestr, ppi->pi_name); |
| 255 | if (ppi->pi_type) |
| 256 | strcpy(lasat_board_info.li_typestr, ppi->pi_type); |
| 257 | else |
| 258 | sprintf(lasat_board_info.li_typestr, "%d", 10 * c); |
| 259 | } |
| 260 | |
| 261 | #if defined(CONFIG_INET) && defined(CONFIG_SYSCTL) |
| 262 | update_bcastaddr(); |
| 263 | #endif |
| 264 | |
| 265 | return 0; |
| 266 | } |
| 267 | |
| 268 | void lasat_write_eeprom_info(void) |
| 269 | { |
| 270 | unsigned long crc; |
| 271 | |
| 272 | /* Generate the CRC */ |
| 273 | crc = EEPROM_CRC((unsigned char *)(&lasat_board_info.li_eeprom_info), |
| 274 | sizeof(struct lasat_eeprom_struct) - 4); |
| 275 | lasat_board_info.li_eeprom_info.crc32 = crc; |
| 276 | |
| 277 | /* Write the EEPROM info */ |
| 278 | EEPROMWrite(0, (unsigned char *)&lasat_board_info.li_eeprom_info, |
| 279 | sizeof(struct lasat_eeprom_struct)); |
| 280 | } |