wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2002 |
| 3 | * Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
| 4 | * Marius Groeger <mgroeger@sysgo.de> |
| 5 | * |
| 6 | * See file CREDITS for list of people who contributed to this |
| 7 | * project. |
| 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 as |
| 11 | * published by the Free Software Foundation; either version 2 of |
| 12 | * 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 Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 22 | * MA 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | #include <common.h> |
| 26 | |
| 27 | #define FLASH_BANK_SIZE 0x1000000 |
| 28 | #define MAIN_SECT_SIZE 0x20000 |
| 29 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 30 | flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 31 | |
| 32 | |
| 33 | /*----------------------------------------------------------------------- |
| 34 | */ |
| 35 | |
| 36 | ulong flash_init (void) |
| 37 | { |
| 38 | int i, j; |
| 39 | ulong size = 0; |
| 40 | |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 41 | for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 42 | ulong flashbase = 0; |
| 43 | |
| 44 | flash_info[i].flash_id = |
| 45 | (INTEL_MANUFACT & FLASH_VENDMASK) | |
| 46 | (INTEL_ID_28F128J3 & FLASH_TYPEMASK); |
| 47 | flash_info[i].size = FLASH_BANK_SIZE; |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 48 | flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
| 49 | memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 50 | if (i == 0) |
| 51 | flashbase = PHYS_FLASH_1; |
| 52 | else |
wdenk | 5958f4a | 2003-09-18 09:21:33 +0000 | [diff] [blame] | 53 | panic ("configured too many flash banks!\n"); |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 54 | for (j = 0; j < flash_info[i].sector_count; j++) { |
| 55 | flash_info[i].start[j] = flashbase + j * MAIN_SECT_SIZE; |
| 56 | } |
| 57 | size += flash_info[i].size; |
| 58 | } |
| 59 | |
| 60 | /* Protect monitor and environment sectors |
| 61 | */ |
| 62 | flash_protect ( FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 63 | CONFIG_SYS_FLASH_BASE, |
| 64 | CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1, |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 65 | &flash_info[0]); |
| 66 | |
| 67 | flash_protect ( FLAG_PROTECT_SET, |
Jean-Christophe PLAGNIOL-VILLARD | 7e1cda6 | 2008-09-10 22:48:06 +0200 | [diff] [blame] | 68 | CONFIG_ENV_ADDR, |
| 69 | CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]); |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 70 | |
| 71 | return size; |
| 72 | } |
| 73 | |
| 74 | /*----------------------------------------------------------------------- |
| 75 | */ |
| 76 | void flash_print_info (flash_info_t * info) |
| 77 | { |
| 78 | int i; |
| 79 | |
| 80 | switch (info->flash_id & FLASH_VENDMASK) { |
| 81 | case (INTEL_MANUFACT & FLASH_VENDMASK): |
| 82 | printf ("Intel: "); |
| 83 | break; |
| 84 | default: |
| 85 | printf ("Unknown Vendor "); |
| 86 | break; |
| 87 | } |
| 88 | |
| 89 | switch (info->flash_id & FLASH_TYPEMASK) { |
| 90 | case (INTEL_ID_28F128J3 & FLASH_TYPEMASK): |
| 91 | printf ("28F128J3 (128Mbit)\n"); |
| 92 | break; |
| 93 | default: |
| 94 | printf ("Unknown Chip Type\n"); |
| 95 | goto Done; |
| 96 | break; |
| 97 | } |
| 98 | |
| 99 | printf (" Size: %ld MB in %d Sectors\n", |
| 100 | info->size >> 20, info->sector_count); |
| 101 | |
| 102 | printf (" Sector Start Addresses:"); |
| 103 | for (i = 0; i < info->sector_count; i++) { |
| 104 | if ((i % 5) == 0) { |
| 105 | printf ("\n "); |
| 106 | } |
| 107 | printf (" %08lX%s", info->start[i], |
| 108 | info->protect[i] ? " (RO)" : " "); |
| 109 | } |
| 110 | printf ("\n"); |
| 111 | |
wdenk | ce4832c | 2004-10-17 21:12:06 +0000 | [diff] [blame] | 112 | Done: ; |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | /*----------------------------------------------------------------------- |
| 116 | */ |
| 117 | |
| 118 | int flash_erase (flash_info_t * info, int s_first, int s_last) |
| 119 | { |
| 120 | int flag, prot, sect; |
| 121 | int rc = ERR_OK; |
| 122 | |
| 123 | if (info->flash_id == FLASH_UNKNOWN) |
| 124 | return ERR_UNKNOWN_FLASH_TYPE; |
| 125 | |
| 126 | if ((s_first < 0) || (s_first > s_last)) { |
| 127 | return ERR_INVAL; |
| 128 | } |
| 129 | |
| 130 | if ((info->flash_id & FLASH_VENDMASK) != |
| 131 | (INTEL_MANUFACT & FLASH_VENDMASK)) { |
| 132 | return ERR_UNKNOWN_FLASH_VENDOR; |
| 133 | } |
| 134 | |
| 135 | prot = 0; |
| 136 | for (sect = s_first; sect <= s_last; ++sect) { |
| 137 | if (info->protect[sect]) { |
| 138 | prot++; |
| 139 | } |
| 140 | } |
| 141 | if (prot) |
| 142 | return ERR_PROTECTED; |
| 143 | |
| 144 | /* |
| 145 | * Disable interrupts which might cause a timeout |
| 146 | * here. Remember that our exception vectors are |
| 147 | * at address 0 in the flash, and we don't want a |
| 148 | * (ticker) exception to happen while the flash |
| 149 | * chip is in programming mode. |
| 150 | */ |
| 151 | flag = disable_interrupts (); |
| 152 | |
| 153 | /* Start erase on unprotected sectors */ |
| 154 | for (sect = s_first; sect <= s_last && !ctrlc (); sect++) { |
| 155 | |
| 156 | printf ("Erasing sector %2d ... ", sect); |
| 157 | |
| 158 | /* arm simple, non interrupt dependent timer */ |
| 159 | reset_timer_masked (); |
| 160 | |
| 161 | if (info->protect[sect] == 0) { /* not protected */ |
| 162 | vu_short *addr = (vu_short *) (info->start[sect]); |
| 163 | |
| 164 | *addr = 0x20; /* erase setup */ |
| 165 | *addr = 0xD0; /* erase confirm */ |
| 166 | |
| 167 | while ((*addr & 0x80) != 0x80) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 168 | if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) { |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 169 | *addr = 0xB0; /* suspend erase */ |
| 170 | *addr = 0xFF; /* reset to read mode */ |
| 171 | rc = ERR_TIMOUT; |
| 172 | goto outahere; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /* clear status register command */ |
| 177 | *addr = 0x50; |
| 178 | /* reset to read mode */ |
| 179 | *addr = 0xFF; |
| 180 | } |
| 181 | printf ("ok.\n"); |
| 182 | } |
| 183 | if (ctrlc ()) |
| 184 | printf ("User Interrupt!\n"); |
| 185 | |
| 186 | outahere: |
| 187 | |
| 188 | /* allow flash to settle - wait 10 ms */ |
| 189 | udelay_masked (10000); |
| 190 | |
| 191 | if (flag) |
| 192 | enable_interrupts (); |
| 193 | |
| 194 | return rc; |
| 195 | } |
| 196 | |
| 197 | /*----------------------------------------------------------------------- |
| 198 | * Copy memory to flash |
| 199 | */ |
| 200 | |
| 201 | static int write_word (flash_info_t * info, ulong dest, ushort data) |
| 202 | { |
| 203 | vu_short *addr = (vu_short *) dest, val; |
| 204 | int rc = ERR_OK; |
| 205 | int flag; |
| 206 | |
| 207 | /* Check if Flash is (sufficiently) erased |
| 208 | */ |
| 209 | if ((*addr & data) != data) |
| 210 | return ERR_NOT_ERASED; |
| 211 | |
| 212 | /* |
| 213 | * Disable interrupts which might cause a timeout |
| 214 | * here. Remember that our exception vectors are |
| 215 | * at address 0 in the flash, and we don't want a |
| 216 | * (ticker) exception to happen while the flash |
| 217 | * chip is in programming mode. |
| 218 | */ |
| 219 | flag = disable_interrupts (); |
| 220 | |
| 221 | /* clear status register command */ |
| 222 | *addr = 0x50; |
| 223 | |
| 224 | /* program set-up command */ |
| 225 | *addr = 0x40; |
| 226 | |
| 227 | /* latch address/data */ |
| 228 | *addr = data; |
| 229 | |
| 230 | /* arm simple, non interrupt dependent timer */ |
| 231 | reset_timer_masked (); |
| 232 | |
| 233 | /* wait while polling the status register */ |
| 234 | while (((val = *addr) & 0x80) != 0x80) { |
Jean-Christophe PLAGNIOL-VILLARD | 0383694 | 2008-10-16 15:01:15 +0200 | [diff] [blame^] | 235 | if (get_timer_masked () > CONFIG_SYS_FLASH_WRITE_TOUT) { |
wdenk | c609719 | 2002-11-03 00:24:07 +0000 | [diff] [blame] | 236 | rc = ERR_TIMOUT; |
| 237 | /* suspend program command */ |
| 238 | *addr = 0xB0; |
| 239 | goto outahere; |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | if (val & 0x1A) { /* check for error */ |
| 244 | printf ("\nFlash write error %02x at address %08lx\n", |
| 245 | (int) val, (unsigned long) dest); |
| 246 | if (val & (1 << 3)) { |
| 247 | printf ("Voltage range error.\n"); |
| 248 | rc = ERR_PROG_ERROR; |
| 249 | goto outahere; |
| 250 | } |
| 251 | if (val & (1 << 1)) { |
| 252 | printf ("Device protect error.\n"); |
| 253 | rc = ERR_PROTECTED; |
| 254 | goto outahere; |
| 255 | } |
| 256 | if (val & (1 << 4)) { |
| 257 | printf ("Programming error.\n"); |
| 258 | rc = ERR_PROG_ERROR; |
| 259 | goto outahere; |
| 260 | } |
| 261 | rc = ERR_PROG_ERROR; |
| 262 | goto outahere; |
| 263 | } |
| 264 | |
| 265 | outahere: |
| 266 | /* read array command */ |
| 267 | *addr = 0xFF; |
| 268 | |
| 269 | if (flag) |
| 270 | enable_interrupts (); |
| 271 | |
| 272 | return rc; |
| 273 | } |
| 274 | |
| 275 | /*----------------------------------------------------------------------- |
| 276 | * Copy memory to flash. |
| 277 | */ |
| 278 | |
| 279 | int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
| 280 | { |
| 281 | ulong cp, wp; |
| 282 | ushort data; |
| 283 | int l; |
| 284 | int i, rc; |
| 285 | |
| 286 | wp = (addr & ~1); /* get lower word aligned address */ |
| 287 | |
| 288 | /* |
| 289 | * handle unaligned start bytes |
| 290 | */ |
| 291 | if ((l = addr - wp) != 0) { |
| 292 | data = 0; |
| 293 | for (i = 0, cp = wp; i < l; ++i, ++cp) { |
| 294 | data = (data >> 8) | (*(uchar *) cp << 8); |
| 295 | } |
| 296 | for (; i < 2 && cnt > 0; ++i) { |
| 297 | data = (data >> 8) | (*src++ << 8); |
| 298 | --cnt; |
| 299 | ++cp; |
| 300 | } |
| 301 | for (; cnt == 0 && i < 2; ++i, ++cp) { |
| 302 | data = (data >> 8) | (*(uchar *) cp << 8); |
| 303 | } |
| 304 | |
| 305 | if ((rc = write_word (info, wp, data)) != 0) { |
| 306 | return (rc); |
| 307 | } |
| 308 | wp += 2; |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * handle word aligned part |
| 313 | */ |
| 314 | while (cnt >= 2) { |
| 315 | data = *((vu_short *) src); |
| 316 | if ((rc = write_word (info, wp, data)) != 0) { |
| 317 | return (rc); |
| 318 | } |
| 319 | src += 2; |
| 320 | wp += 2; |
| 321 | cnt -= 2; |
| 322 | } |
| 323 | |
| 324 | if (cnt == 0) { |
| 325 | return ERR_OK; |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * handle unaligned tail bytes |
| 330 | */ |
| 331 | data = 0; |
| 332 | for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) { |
| 333 | data = (data >> 8) | (*src++ << 8); |
| 334 | --cnt; |
| 335 | } |
| 336 | for (; i < 2; ++i, ++cp) { |
| 337 | data = (data >> 8) | (*(uchar *) cp << 8); |
| 338 | } |
| 339 | |
| 340 | return write_word (info, wp, data); |
| 341 | } |