Andrei Safronov | cdb97a6 | 2006-12-08 16:23:08 +0100 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2006 |
| 3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License as |
| 7 | * published by the Free Software Foundation; either version 2 of |
| 8 | * the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 18 | * MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <common.h> |
| 21 | #include <command.h> |
| 22 | #include <malloc.h> |
| 23 | #include <image.h> |
| 24 | #include <asm/byteorder.h> |
| 25 | #include <usb.h> |
| 26 | |
| 27 | #ifdef CFG_HUSH_PARSER |
| 28 | #include <hush.h> |
| 29 | #endif |
| 30 | |
| 31 | |
| 32 | #ifdef CONFIG_AUTO_UPDATE |
| 33 | |
| 34 | #ifndef CONFIG_USB_OHCI |
| 35 | #error "must define CONFIG_USB_OHCI" |
| 36 | #endif |
| 37 | |
| 38 | #ifndef CONFIG_USB_STORAGE |
| 39 | #error "must define CONFIG_USB_STORAGE" |
| 40 | #endif |
| 41 | |
| 42 | #ifndef CFG_HUSH_PARSER |
| 43 | #error "must define CFG_HUSH_PARSER" |
| 44 | #endif |
| 45 | |
| 46 | #if !(CONFIG_COMMANDS & CFG_CMD_FAT) |
| 47 | #error "must define CFG_CMD_FAT" |
| 48 | #endif |
| 49 | |
| 50 | /* |
| 51 | * Check whether a USB memory stick is plugged in. |
| 52 | * If one is found: |
| 53 | * 1) if prepare.img ist found load it into memory. If it is |
| 54 | * valid then run it. |
| 55 | * 2) if preinst.img is found load it into memory. If it is |
| 56 | * valid then run it. Update the EEPROM. |
| 57 | * 3) if firmw_01.img is found load it into memory. If it is valid, |
| 58 | * burn it into FLASH and update the EEPROM. |
| 59 | * 4) if kernl_01.img is found load it into memory. If it is valid, |
| 60 | * burn it into FLASH and update the EEPROM. |
| 61 | * 5) if app.img is found load it into memory. If it is valid, |
| 62 | * burn it into FLASH and update the EEPROM. |
| 63 | * 6) if disk.img is found load it into memory. If it is valid, |
| 64 | * burn it into FLASH and update the EEPROM. |
| 65 | * 7) if postinst.img is found load it into memory. If it is |
| 66 | * valid then run it. Update the EEPROM. |
| 67 | */ |
| 68 | |
| 69 | #undef AU_DEBUG |
| 70 | |
| 71 | #undef debug |
| 72 | #ifdef AU_DEBUG |
| 73 | #define debug(fmt,args...) printf (fmt ,##args) |
| 74 | #else |
| 75 | #define debug(fmt,args...) |
| 76 | #endif /* AU_DEBUG */ |
| 77 | |
| 78 | /* possible names of files on the USB stick. */ |
| 79 | #define AU_FIRMWARE "u-boot.img" |
| 80 | #define AU_KERNEL "kernel.img" |
| 81 | |
| 82 | struct flash_layout |
| 83 | { |
| 84 | long start; |
| 85 | long end; |
| 86 | }; |
| 87 | |
| 88 | /* layout of the FLASH. ST = start address, ND = end address. */ |
| 89 | #define AU_FL_FIRMWARE_ST 0xfC000000 |
| 90 | #define AU_FL_FIRMWARE_ND 0xfC03FFFF |
| 91 | #define AU_FL_KERNEL_ST 0xfC0C0000 |
| 92 | #define AU_FL_KERNEL_ND 0xfC1BFFFF |
| 93 | |
| 94 | static int au_usb_stor_curr_dev; /* current device */ |
| 95 | |
| 96 | /* index of each file in the following arrays */ |
| 97 | #define IDX_FIRMWARE 0 |
| 98 | #define IDX_KERNEL 1 |
| 99 | |
| 100 | /* max. number of files which could interest us */ |
| 101 | #define AU_MAXFILES 2 |
| 102 | |
| 103 | /* pointers to file names */ |
| 104 | char *aufile[AU_MAXFILES]; |
| 105 | |
| 106 | /* sizes of flash areas for each file */ |
| 107 | long ausize[AU_MAXFILES]; |
| 108 | |
| 109 | /* array of flash areas start and end addresses */ |
| 110 | struct flash_layout aufl_layout[AU_MAXFILES] = { \ |
| 111 | {AU_FL_FIRMWARE_ST, AU_FL_FIRMWARE_ND,}, \ |
| 112 | {AU_FL_KERNEL_ST, AU_FL_KERNEL_ND,}, \ |
| 113 | }; |
| 114 | |
| 115 | /* where to load files into memory */ |
| 116 | #define LOAD_ADDR ((unsigned char *)0x00200000) |
| 117 | |
| 118 | /* the app is the largest image */ |
| 119 | #define MAX_LOADSZ ausize[IDX_KERNEL] |
| 120 | |
| 121 | /*i2c address of the keypad status*/ |
| 122 | #define I2C_PSOC_KEYPAD_ADDR 0x53 |
| 123 | |
| 124 | /* keypad mask */ |
| 125 | #define KEYPAD_ROW 3 |
| 126 | #define KEYPAD_COL 3 |
| 127 | #define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF) |
| 128 | #define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8) |
| 129 | |
| 130 | /* externals */ |
| 131 | extern int fat_register_device(block_dev_desc_t *, int); |
| 132 | extern int file_fat_detectfs(void); |
| 133 | extern long file_fat_read(const char *, void *, unsigned long); |
| 134 | extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int); |
| 135 | extern int flash_sect_erase(ulong, ulong); |
| 136 | extern int flash_sect_protect (int, ulong, ulong); |
| 137 | extern int flash_write (char *, ulong, ulong); |
| 138 | /* change char* to void* to shutup the compiler */ |
| 139 | extern block_dev_desc_t *get_dev (char*, int); |
| 140 | extern int u_boot_hush_start(void); |
| 141 | |
| 142 | int |
| 143 | au_check_cksum_valid(int idx, long nbytes) |
| 144 | { |
| 145 | image_header_t *hdr; |
| 146 | unsigned long checksum; |
| 147 | |
| 148 | hdr = (image_header_t *)LOAD_ADDR; |
| 149 | |
| 150 | if (nbytes != (sizeof(*hdr) + ntohl(hdr->ih_size))) |
| 151 | { |
| 152 | printf ("Image %s bad total SIZE\n", aufile[idx]); |
| 153 | return -1; |
| 154 | } |
| 155 | /* check the data CRC */ |
| 156 | checksum = ntohl(hdr->ih_dcrc); |
| 157 | |
| 158 | if (crc32 (0, (uchar *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) |
| 159 | != checksum) |
| 160 | { |
| 161 | printf ("Image %s bad data checksum\n", aufile[idx]); |
| 162 | return -1; |
| 163 | } |
| 164 | return 0; |
| 165 | } |
| 166 | |
| 167 | int |
| 168 | au_check_header_valid(int idx, long nbytes) |
| 169 | { |
| 170 | image_header_t *hdr; |
| 171 | unsigned long checksum; |
| 172 | unsigned char buf[4]; |
| 173 | |
| 174 | hdr = (image_header_t *)LOAD_ADDR; |
| 175 | /* check the easy ones first */ |
| 176 | #undef CHECK_VALID_DEBUG |
| 177 | #ifdef CHECK_VALID_DEBUG |
| 178 | printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC); |
| 179 | printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_ARM); |
| 180 | printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes); |
| 181 | printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL); |
| 182 | #endif |
| 183 | if (nbytes < sizeof(*hdr)) |
| 184 | { |
| 185 | printf ("Image %s bad header SIZE\n", aufile[idx]); |
| 186 | return -1; |
| 187 | } |
| 188 | if (ntohl(hdr->ih_magic) != IH_MAGIC || hdr->ih_arch != IH_CPU_PPC) |
| 189 | { |
| 190 | printf ("Image %s bad MAGIC or ARCH\n", aufile[idx]); |
| 191 | return -1; |
| 192 | } |
| 193 | /* check the hdr CRC */ |
| 194 | checksum = ntohl(hdr->ih_hcrc); |
| 195 | hdr->ih_hcrc = 0; |
| 196 | |
| 197 | if (crc32 (0, (uchar *)hdr, sizeof(*hdr)) != checksum) { |
| 198 | printf ("Image %s bad header checksum\n", aufile[idx]); |
| 199 | return -1; |
| 200 | } |
| 201 | hdr->ih_hcrc = htonl(checksum); |
| 202 | /* check the type - could do this all in one gigantic if() */ |
| 203 | if ((idx == IDX_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) { |
| 204 | printf ("Image %s wrong type\n", aufile[idx]); |
| 205 | return -1; |
| 206 | } |
| 207 | if ((idx == IDX_KERNEL) && (hdr->ih_type != IH_TYPE_KERNEL)) { |
| 208 | printf ("Image %s wrong type\n", aufile[idx]); |
| 209 | return -1; |
| 210 | } |
| 211 | /* recycle checksum */ |
| 212 | checksum = ntohl(hdr->ih_size); |
| 213 | /* for kernel and app the image header must also fit into flash */ |
| 214 | if (idx != IDX_FIRMWARE) |
| 215 | checksum += sizeof(*hdr); |
| 216 | /* check the size does not exceed space in flash. HUSH scripts */ |
| 217 | /* all have ausize[] set to 0 */ |
| 218 | if ((ausize[idx] != 0) && (ausize[idx] < checksum)) { |
| 219 | printf ("Image %s is bigger than FLASH\n", aufile[idx]); |
| 220 | return -1; |
| 221 | } |
| 222 | return 0; |
| 223 | } |
| 224 | |
| 225 | |
| 226 | int |
| 227 | au_do_update(int idx, long sz) |
| 228 | { |
| 229 | image_header_t *hdr; |
| 230 | char *addr; |
| 231 | long start, end; |
| 232 | int off, rc; |
| 233 | uint nbytes; |
| 234 | |
| 235 | hdr = (image_header_t *)LOAD_ADDR; |
| 236 | |
| 237 | /* execute a script */ |
| 238 | if (hdr->ih_type == IH_TYPE_SCRIPT) { |
| 239 | addr = (char *)((char *)hdr + sizeof(*hdr)); |
| 240 | /* stick a NULL at the end of the script, otherwise */ |
| 241 | /* parse_string_outer() runs off the end. */ |
| 242 | addr[ntohl(hdr->ih_size)] = 0; |
| 243 | addr += 8; |
| 244 | parse_string_outer(addr, FLAG_PARSE_SEMICOLON); |
| 245 | return 0; |
| 246 | } |
| 247 | |
| 248 | start = aufl_layout[idx].start; |
| 249 | end = aufl_layout[idx].end; |
| 250 | |
| 251 | /* unprotect the address range */ |
| 252 | /* this assumes that ONLY the firmware is protected! */ |
| 253 | if (idx == IDX_FIRMWARE) { |
| 254 | #undef AU_UPDATE_TEST |
| 255 | #ifdef AU_UPDATE_TEST |
| 256 | /* erase it where Linux goes */ |
| 257 | start = aufl_layout[1].start; |
| 258 | end = aufl_layout[1].end; |
| 259 | #endif |
| 260 | flash_sect_protect(0, start, end); |
| 261 | } |
| 262 | |
| 263 | /* |
| 264 | * erase the address range. |
| 265 | */ |
| 266 | debug ("flash_sect_erase(%lx, %lx);\n", start, end); |
| 267 | flash_sect_erase(start, end); |
| 268 | wait_ms(100); |
| 269 | /* strip the header - except for the kernel and ramdisk */ |
| 270 | if (hdr->ih_type == IH_TYPE_KERNEL) { |
| 271 | addr = (char *)hdr; |
| 272 | off = sizeof(*hdr); |
| 273 | nbytes = sizeof(*hdr) + ntohl(hdr->ih_size); |
| 274 | } else { |
| 275 | addr = (char *)((char *)hdr + sizeof(*hdr)); |
| 276 | #ifdef AU_UPDATE_TEST |
| 277 | /* copy it to where Linux goes */ |
| 278 | if (idx == IDX_FIRMWARE) |
| 279 | start = aufl_layout[1].start; |
| 280 | #endif |
| 281 | off = 0; |
| 282 | nbytes = ntohl(hdr->ih_size); |
| 283 | } |
| 284 | |
| 285 | /* copy the data from RAM to FLASH */ |
| 286 | debug ("flash_write(%p, %lx %x)\n", addr, start, nbytes); |
| 287 | rc = flash_write(addr, start, nbytes); |
| 288 | if (rc != 0) { |
| 289 | printf("Flashing failed due to error %d\n", rc); |
| 290 | return -1; |
| 291 | } |
| 292 | |
| 293 | /* check the dcrc of the copy */ |
| 294 | if (crc32 (0, (uchar *)(start + off), ntohl(hdr->ih_size)) != ntohl(hdr->ih_dcrc)) { |
| 295 | printf ("Image %s Bad Data Checksum After COPY\n", aufile[idx]); |
| 296 | return -1; |
| 297 | } |
| 298 | |
| 299 | /* protect the address range */ |
| 300 | /* this assumes that ONLY the firmware is protected! */ |
| 301 | if (idx == IDX_FIRMWARE) |
| 302 | flash_sect_protect(1, start, end); |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | |
| 307 | /* |
| 308 | * this is called from board_init() after the hardware has been set up |
| 309 | * and is usable. That seems like a good time to do this. |
| 310 | * Right now the return value is ignored. |
| 311 | */ |
| 312 | int |
| 313 | do_auto_update(void) |
| 314 | { |
| 315 | block_dev_desc_t *stor_dev; |
| 316 | long sz; |
| 317 | int i, res, bitmap_first, cnt, old_ctrlc, got_ctrlc; |
| 318 | char *env; |
| 319 | long start, end; |
| 320 | char keypad_status1[2] = {0,0}, keypad_status2[2] = {0,0}; |
| 321 | |
| 322 | /* |
| 323 | * Read keypad status |
| 324 | */ |
| 325 | i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status1, 2); |
| 326 | wait_ms(500); |
| 327 | i2c_read(I2C_PSOC_KEYPAD_ADDR, 0, 0, keypad_status2, 2); |
| 328 | |
| 329 | /* |
| 330 | * Check keypad |
| 331 | */ |
| 332 | if ( !(keypad_status1[0] & KEYPAD_MASK_HI) || |
| 333 | (keypad_status1[0] != keypad_status2[0])) { |
| 334 | return 0; |
| 335 | } |
| 336 | if ( !(keypad_status1[1] & KEYPAD_MASK_LO) || |
| 337 | (keypad_status1[1] != keypad_status2[1])) { |
| 338 | return 0; |
| 339 | } |
| 340 | au_usb_stor_curr_dev = -1; |
| 341 | /* start USB */ |
| 342 | if (usb_stop() < 0) { |
| 343 | debug ("usb_stop failed\n"); |
| 344 | return -1; |
| 345 | } |
| 346 | if (usb_init() < 0) { |
| 347 | debug ("usb_init failed\n"); |
| 348 | return -1; |
| 349 | } |
| 350 | /* |
| 351 | * check whether a storage device is attached (assume that it's |
| 352 | * a USB memory stick, since nothing else should be attached). |
| 353 | */ |
| 354 | au_usb_stor_curr_dev = usb_stor_scan(0); |
| 355 | if (au_usb_stor_curr_dev == -1) { |
| 356 | debug ("No device found. Not initialized?\n"); |
| 357 | return -1; |
| 358 | } |
| 359 | /* check whether it has a partition table */ |
| 360 | stor_dev = get_dev("usb", 0); |
| 361 | if (stor_dev == NULL) { |
| 362 | debug ("uknown device type\n"); |
| 363 | return -1; |
| 364 | } |
| 365 | if (fat_register_device(stor_dev, 1) != 0) { |
| 366 | debug ("Unable to use USB %d:%d for fatls\n", |
| 367 | au_usb_stor_curr_dev, 1); |
| 368 | return -1; |
| 369 | } |
| 370 | if (file_fat_detectfs() != 0) { |
| 371 | debug ("file_fat_detectfs failed\n"); |
| 372 | } |
| 373 | |
| 374 | /* initialize the array of file names */ |
| 375 | memset(aufile, 0, sizeof(aufile)); |
| 376 | aufile[IDX_FIRMWARE] = AU_FIRMWARE; |
| 377 | aufile[IDX_KERNEL] = AU_KERNEL; |
| 378 | /* initialize the array of flash sizes */ |
| 379 | memset(ausize, 0, sizeof(ausize)); |
| 380 | ausize[IDX_FIRMWARE] = (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST; |
| 381 | ausize[IDX_KERNEL] = (AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST; |
| 382 | /* |
| 383 | * now check whether start and end are defined using environment |
| 384 | * variables. |
| 385 | */ |
| 386 | start = -1; |
| 387 | end = 0; |
| 388 | env = getenv("firmware_st"); |
| 389 | if (env != NULL) |
| 390 | start = simple_strtoul(env, NULL, 16); |
| 391 | env = getenv("firmware_nd"); |
| 392 | if (env != NULL) |
| 393 | end = simple_strtoul(env, NULL, 16); |
| 394 | if (start >= 0 && end && end > start) { |
| 395 | ausize[IDX_FIRMWARE] = (end + 1) - start; |
| 396 | aufl_layout[0].start = start; |
| 397 | aufl_layout[0].end = end; |
| 398 | } |
| 399 | start = -1; |
| 400 | end = 0; |
| 401 | env = getenv("kernel_st"); |
| 402 | if (env != NULL) |
| 403 | start = simple_strtoul(env, NULL, 16); |
| 404 | env = getenv("kernel_nd"); |
| 405 | if (env != NULL) |
| 406 | end = simple_strtoul(env, NULL, 16); |
| 407 | if (start >= 0 && end && end > start) { |
| 408 | ausize[IDX_KERNEL] = (end + 1) - start; |
| 409 | aufl_layout[1].start = start; |
| 410 | aufl_layout[1].end = end; |
| 411 | } |
| 412 | /* make certain that HUSH is runnable */ |
| 413 | u_boot_hush_start(); |
| 414 | /* make sure that we see CTRL-C and save the old state */ |
| 415 | old_ctrlc = disable_ctrlc(0); |
| 416 | |
| 417 | bitmap_first = 0; |
| 418 | /* just loop thru all the possible files */ |
| 419 | for (i = 0; i < AU_MAXFILES; i++) { |
| 420 | /* just read the header */ |
| 421 | sz = file_fat_read(aufile[i], LOAD_ADDR, sizeof(image_header_t)); |
| 422 | debug ("read %s sz %ld hdr %d\n", |
| 423 | aufile[i], sz, sizeof(image_header_t)); |
| 424 | if (sz <= 0 || sz < sizeof(image_header_t)) { |
| 425 | debug ("%s not found\n", aufile[i]); |
| 426 | continue; |
| 427 | } |
| 428 | if (au_check_header_valid(i, sz) < 0) { |
| 429 | debug ("%s header not valid\n", aufile[i]); |
| 430 | continue; |
| 431 | } |
| 432 | sz = file_fat_read(aufile[i], LOAD_ADDR, MAX_LOADSZ); |
| 433 | debug ("read %s sz %ld hdr %d\n", |
| 434 | aufile[i], sz, sizeof(image_header_t)); |
| 435 | if (sz <= 0 || sz <= sizeof(image_header_t)) { |
| 436 | debug ("%s not found\n", aufile[i]); |
| 437 | continue; |
| 438 | } |
| 439 | if (au_check_cksum_valid(i, sz) < 0) { |
| 440 | debug ("%s checksum not valid\n", aufile[i]); |
| 441 | continue; |
| 442 | } |
| 443 | /* this is really not a good idea, but it's what the */ |
| 444 | /* customer wants. */ |
| 445 | cnt = 0; |
| 446 | got_ctrlc = 0; |
| 447 | do { |
| 448 | res = au_do_update(i, sz); |
| 449 | /* let the user break out of the loop */ |
| 450 | if (ctrlc() || had_ctrlc()) { |
| 451 | clear_ctrlc(); |
| 452 | if (res < 0) |
| 453 | got_ctrlc = 1; |
| 454 | break; |
| 455 | } |
| 456 | cnt++; |
| 457 | #ifdef AU_TEST_ONLY |
| 458 | } while (res < 0 && cnt < 3); |
| 459 | if (cnt < 3) |
| 460 | #else |
| 461 | } while (res < 0); |
| 462 | #endif |
| 463 | } |
| 464 | usb_stop(); |
| 465 | /* restore the old state */ |
| 466 | disable_ctrlc(old_ctrlc); |
| 467 | return 0; |
| 468 | } |
| 469 | #endif /* CONFIG_AUTO_UPDATE */ |