wdenk | f54ebdf | 2003-09-17 15:10:32 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * (C) Copyright 2003 |
| 3 | * Gary Jennejohn, DENX Software Engineering, gj@denx.de. |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <command.h> |
| 26 | #include <malloc.h> |
| 27 | #include <image.h> |
| 28 | #include <asm/byteorder.h> |
| 29 | #include <usb.h> |
| 30 | |
| 31 | #ifdef CFG_HUSH_PARSER |
| 32 | #include <hush.h> |
| 33 | #endif |
| 34 | |
| 35 | #ifdef CONFIG_AUTO_UPDATE |
| 36 | |
| 37 | #ifndef CONFIG_USB_OHCI |
| 38 | #error "must define CONFIG_USB_OHCI" |
| 39 | #endif |
| 40 | |
| 41 | #ifndef CONFIG_USB_STORAGE |
| 42 | #error "must define CONFIG_USB_STORAGE" |
| 43 | #endif |
| 44 | |
| 45 | #ifndef CFG_HUSH_PARSER |
| 46 | #error "must define CFG_HUSH_PARSER" |
| 47 | #endif |
| 48 | |
| 49 | #if !(CONFIG_COMMANDS & CFG_CMD_FAT) |
| 50 | #error "must define CFG_CMD_FAT" |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * Check whether a USB memory stick is plugged in. |
| 55 | * If one is found: |
| 56 | * 1) try to do an MSDOS ls |
| 57 | * 2) if preinst.img is found and is not 0 length, load it into |
| 58 | * memory and run it (how to check beforehand if it's a |
| 59 | * valid HUSH command file?) |
| 60 | * 3) |
| 61 | * 4) |
| 62 | * 5) |
| 63 | * 6) |
| 64 | * 7) |
| 65 | * 8) |
| 66 | * 9) |
| 67 | * 10) |
| 68 | * 11) |
| 69 | * 12) |
| 70 | */ |
| 71 | |
| 72 | #undef AU_DEBUG |
| 73 | |
| 74 | #undef debug |
| 75 | #ifdef AU_DEBUG |
| 76 | #define debug(fmt,args...) printf (fmt ,##args) |
| 77 | #else |
| 78 | #define debug(fmt,args...) |
| 79 | #endif /* AU_DEBUG */ |
| 80 | |
| 81 | /* possible names of files on the USB stick. */ |
| 82 | #define AU_PREPARE "prepare.img" |
| 83 | #define AU_PREINST "preinst.img" |
| 84 | #define AU_FIRMWARE "firmware.img" |
| 85 | #define AU_KERNEL "kernel.img" |
| 86 | #define AU_APP "app.img" |
| 87 | #define AU_DISK "disk.img" |
| 88 | #define AU_POSTINST "postinst.img" |
| 89 | |
| 90 | /* layout of the FLASH. ST = start address, ND = end address. */ |
| 91 | #ifndef CONFIG_OLD_VERSION /* 16 MB Flash, 32 MB RAM */ |
| 92 | #define AU_FL_FIRMWARE_ST 0x00000000 |
| 93 | #define AU_FL_FIRMWARE_ND 0x0009FFFF |
| 94 | #define AU_FL_VFD_ST 0x000A0000 |
| 95 | #define AU_FL_VFD_ND 0x000BFFFF |
| 96 | #define AU_FL_KERNEL_ST 0x000C0000 |
| 97 | #define AU_FL_KERNEL_ND 0x001BFFFF |
| 98 | #define AU_FL_APP_ST 0x001C0000 |
| 99 | #define AU_FL_APP_ND 0x005BFFFF |
| 100 | #define AU_FL_DISK_ST 0x005C0000 |
| 101 | #define AU_FL_DISK_ND 0x00FFFFFF |
| 102 | #else /* 8 MB Flash, 16 MB RAM */ |
| 103 | #define AU_FL_FIRMWARE_ST 0x00000000 |
| 104 | #define AU_FL_FIRMWARE_ND 0x0003FFFF |
| 105 | #define AU_FL_KERNEL_ST 0x00040000 |
| 106 | #define AU_FL_KERNEL_ND 0x0011FFFF |
| 107 | #define AU_FL_APP_ST 0x00120000 |
| 108 | #define AU_FL_APP_ND 0x003FFFFF |
| 109 | #define AU_FL_DISK_ST 0x00400000 |
| 110 | #define AU_FL_DISK_ND 0x007DFFFF |
| 111 | #define AU_FL_VFD_ST 0x007E0000 |
| 112 | #define AU_FL_VFD_ND 0x007FFFFF |
| 113 | #endif /* CONFIG_OLD_VERSION */ |
| 114 | |
| 115 | /* a structure with the offsets to values in the EEPROM */ |
| 116 | struct eeprom_layout |
| 117 | { |
| 118 | unsigned int time; |
| 119 | unsigned int size; |
| 120 | unsigned int dcrc; |
| 121 | }; |
| 122 | |
| 123 | /* layout of the EEPROM - offset from the start. All entries are 32 bit. */ |
| 124 | #define AU_EEPROM_TIME_PREINST 64 |
| 125 | #define AU_EEPROM_SIZE_PREINST 68 |
| 126 | #define AU_EEPROM_DCRC_PREINST 72 |
| 127 | #define AU_EEPROM_TIME_FIRMWARE 76 |
| 128 | #define AU_EEPROM_SIZE_FIRMWARE 80 |
| 129 | #define AU_EEPROM_DCRC_FIRMWARE 84 |
| 130 | #define AU_EEPROM_TIME_KERNEL 88 |
| 131 | #define AU_EEPROM_SIZE_KERNEL 92 |
| 132 | #define AU_EEPROM_DCRC_KERNEL 96 |
| 133 | #define AU_EEPROM_TIME_APP 100 |
| 134 | #define AU_EEPROM_SIZE_APP 104 |
| 135 | #define AU_EEPROM_DCRC_APP 108 |
| 136 | #define AU_EEPROM_TIME_DISK 112 |
| 137 | #define AU_EEPROM_SIZE_DISK 116 |
| 138 | #define AU_EEPROM_DCRC_DISK 120 |
| 139 | #define AU_EEPROM_TIME_POSTINST 124 |
| 140 | #define AU_EEPROM_SIZE_POSTINST 128 |
| 141 | #define AU_EEPROM_DCRC_POSTINST 132 |
| 142 | |
| 143 | static int au_usb_stor_curr_dev; /* current device */ |
| 144 | /* max. number of files which could interest us */ |
| 145 | #define AU_MAXFILES 7 |
| 146 | /* pointers to file names */ |
| 147 | char *aufile[AU_MAXFILES]; |
| 148 | /* sizes of flash areas for each file */ |
| 149 | long ausize[AU_MAXFILES]; |
| 150 | /* offsets into the EEEPROM */ |
| 151 | struct eeprom_layout auee_off[AU_MAXFILES] = { \ |
| 152 | {0}, \ |
| 153 | {AU_EEPROM_TIME_PREINST, AU_EEPROM_SIZE_PREINST, AU_EEPROM_DCRC_PREINST,}, \ |
| 154 | {AU_EEPROM_TIME_FIRMWARE, AU_EEPROM_SIZE_FIRMWARE, AU_EEPROM_DCRC_FIRMWARE,}, \ |
| 155 | {AU_EEPROM_TIME_KERNEL, AU_EEPROM_SIZE_KERNEL, AU_EEPROM_DCRC_KERNEL,}, \ |
| 156 | {AU_EEPROM_TIME_APP, AU_EEPROM_SIZE_APP, AU_EEPROM_DCRC_APP,}, \ |
| 157 | {AU_EEPROM_TIME_DISK, AU_EEPROM_SIZE_DISK, AU_EEPROM_DCRC_DISK,}, \ |
| 158 | {AU_EEPROM_TIME_POSTINST, AU_EEPROM_SIZE_POSTINST, AU_EEPROM_DCRC_POSTINST,} \ |
| 159 | }; |
| 160 | /* index of each file in the above array */ |
| 161 | #define IDX_PREPARE 0 |
| 162 | #define IDX_PREINST 1 |
| 163 | #define IDX_FIRMWARE 2 |
| 164 | #define IDX_KERNEL 3 |
| 165 | #define IDX_APP 4 |
| 166 | #define IDX_DISK 5 |
| 167 | #define IDX_POSTINST 6 |
| 168 | /* where to load files into memory */ |
| 169 | #define LOAD_ADDR ((unsigned char *)0x0c100000) |
| 170 | /* the disk is the largest image */ |
| 171 | #define MAX_LOADSZ ausize[IDX_DISK] |
| 172 | |
| 173 | /* externals */ |
| 174 | extern int fat_register_device(block_dev_desc_t *, int); |
| 175 | extern int file_fat_detectfs(void); |
| 176 | extern long file_fat_read(const char *, void *, unsigned long); |
| 177 | extern int i2c_read (unsigned char, unsigned int, int , unsigned char* , int); |
| 178 | extern int i2c_write (uchar, uint, int , uchar* , int); |
| 179 | #ifdef CONFIG_VFD |
| 180 | extern int trab_vfd (ulong); |
| 181 | extern int transfer_pic(unsigned char, unsigned char *, int, int); |
| 182 | #endif |
| 183 | extern int i2c_write_multiple (uchar, uint, int, uchar *, int); |
| 184 | extern int i2c_read_multiple (uchar, uint, int, uchar *, int); |
| 185 | |
| 186 | |
| 187 | int |
| 188 | au_check_valid(int idx, long nbytes) |
| 189 | { |
| 190 | image_header_t *hdr; |
| 191 | unsigned long checksum; |
| 192 | unsigned char buf[4]; |
| 193 | |
| 194 | hdr = (image_header_t *)LOAD_ADDR; |
| 195 | /* check the easy ones first */ |
| 196 | #ifdef CHECK_VALID_DEBUG |
| 197 | printf("magic %#x %#x ", ntohl(hdr->ih_magic), IH_MAGIC); |
| 198 | printf("arch %#x %#x ", hdr->ih_arch, IH_CPU_ARM); |
| 199 | printf("size %#x %#lx ", ntohl(hdr->ih_size), nbytes); |
| 200 | printf("type %#x %#x ", hdr->ih_type, IH_TYPE_KERNEL); |
| 201 | #endif |
| 202 | if (ntohl(hdr->ih_magic) != IH_MAGIC || |
| 203 | hdr->ih_arch != IH_CPU_ARM || |
| 204 | nbytes < ntohl(hdr->ih_size)) { |
| 205 | printf ("Image %s Bad MAGIC or ARCH or SIZE\n", aufile[idx]); |
| 206 | return -1; |
| 207 | } |
| 208 | /* check the hdr CRC */ |
| 209 | checksum = ntohl(hdr->ih_hcrc); |
| 210 | hdr->ih_hcrc = 0; |
| 211 | |
| 212 | if (crc32 (0, (char *)hdr, sizeof(*hdr)) != checksum) { |
| 213 | printf ("Image %s Bad Header Checksum\n", aufile[idx]); |
| 214 | return -1; |
| 215 | } |
| 216 | /* check the data CRC */ |
| 217 | checksum = ntohl(hdr->ih_dcrc); |
| 218 | |
| 219 | if (crc32 (0, (char *)(LOAD_ADDR + sizeof(*hdr)), ntohl(hdr->ih_size)) |
| 220 | != checksum) |
| 221 | { |
| 222 | printf ("Image %s Bad Data Checksum\n", aufile[idx]); |
| 223 | return -1; |
| 224 | } |
| 225 | /* check the type - could do this all in one gigantic if() */ |
| 226 | if ((idx == IDX_FIRMWARE) && (hdr->ih_type != IH_TYPE_FIRMWARE)) { |
| 227 | printf ("Image %s Wrong Type\n", aufile[idx]); |
| 228 | return -1; |
| 229 | } |
| 230 | if ((idx == IDX_KERNEL) && (hdr->ih_type != IH_TYPE_KERNEL)) { |
| 231 | printf ("Image %s Wrong Type\n", aufile[idx]); |
| 232 | return -1; |
| 233 | } |
| 234 | if ((idx == IDX_DISK || idx == IDX_APP) |
| 235 | && (hdr->ih_type != IH_TYPE_RAMDISK)) |
| 236 | { |
| 237 | printf ("Image %s Wrong Type\n", aufile[idx]); |
| 238 | return -1; |
| 239 | } |
| 240 | if ((idx == IDX_PREPARE || idx == IDX_PREINST || idx == IDX_POSTINST) |
| 241 | && (hdr->ih_type != IH_TYPE_SCRIPT)) |
| 242 | { |
| 243 | printf ("Image %s Wrong Type\n", aufile[idx]); |
| 244 | return -1; |
| 245 | } |
| 246 | /* special case for prepare.img */ |
| 247 | if (idx == IDX_PREPARE) |
| 248 | return 0; |
| 249 | /* check the size does not exceed space in flash */ |
| 250 | if ((ausize[idx] != 0) && (ausize[idx] < ntohl(hdr->ih_size))) { |
| 251 | printf ("Image %s is bigger than FLASH\n", aufile[idx]); |
| 252 | return -1; |
| 253 | } |
| 254 | /* check the time stamp from the EEPROM */ |
| 255 | /* read it in */ |
| 256 | i2c_read_multiple(0x54, auee_off[idx].time, 1, buf, sizeof(buf)); |
| 257 | #ifdef CHECK_VALID_DEBUG |
| 258 | printf("buf[0] %#x buf[1] %#x buf[2] %#x buf[3] %#x as int %#x time %#x\n", |
| 259 | buf[0], buf[1], buf[2], buf[3], *((unsigned int *)buf), ntohl(hdr->ih_time)); |
| 260 | #endif |
| 261 | /* check it */ |
| 262 | if (*((unsigned int *)buf) >= ntohl(hdr->ih_time)) { |
| 263 | printf ("Image %s is too old\n", aufile[idx]); |
| 264 | return -1; |
| 265 | } |
| 266 | |
| 267 | return 0; |
| 268 | } |
| 269 | |
| 270 | /* power control defines */ |
| 271 | #define CPLD_VFD_BK ((volatile char *)0x04038002) |
| 272 | #define POWER_OFF (1 << 1) |
| 273 | |
| 274 | int |
| 275 | au_do_update(int idx) |
| 276 | { |
| 277 | image_header_t *hdr; |
| 278 | char *addr; |
| 279 | |
| 280 | hdr = (image_header_t *)LOAD_ADDR; |
| 281 | /* disable the power switch */ |
| 282 | *CPLD_VFD_BK |= POWER_OFF; |
| 283 | /* execute a script */ |
| 284 | if (hdr->ih_type == IH_TYPE_SCRIPT) { |
| 285 | addr = (char *)((char *)hdr + sizeof(*hdr) + 8); |
| 286 | parse_string_outer(addr, |
| 287 | FLAG_PARSE_SEMICOLON | FLAG_EXIT_FROM_LOOP); |
| 288 | return 0; |
| 289 | } |
| 290 | return 0; |
| 291 | } |
| 292 | |
| 293 | int |
| 294 | au_update_eeprom(int idx) |
| 295 | { |
| 296 | image_header_t *hdr; |
| 297 | |
| 298 | hdr = (image_header_t *)LOAD_ADDR; |
| 299 | /* enable the power switch */ |
| 300 | *CPLD_VFD_BK &= ~POWER_OFF; |
| 301 | return 0; |
| 302 | } |
| 303 | |
| 304 | /* |
| 305 | * this is called from board_init() after the hardware has been set up |
| 306 | * and is usable. That seems like a good time to do this. |
| 307 | * Right now the return value is ignored. |
| 308 | */ |
| 309 | int |
| 310 | do_auto_update(void) |
| 311 | { |
| 312 | block_dev_desc_t *stor_dev; |
| 313 | long sz; |
| 314 | int i, res, bitmap_first; |
| 315 | char *env; |
| 316 | |
| 317 | #ifdef ERASE_EEPROM |
| 318 | int arr[18]; |
| 319 | memset(arr, 0, sizeof(arr)); |
| 320 | i2c_write_multiple(0x54, 64, 1, arr, sizeof(arr)); |
| 321 | #endif |
| 322 | au_usb_stor_curr_dev = -1; |
| 323 | /* start USB */ |
| 324 | if (usb_stop() < 0) { |
| 325 | debug ("usb_stop failed\n"); |
| 326 | return -1; |
| 327 | } |
| 328 | if (usb_init() < 0) { |
| 329 | debug ("usb_init failed\n"); |
| 330 | return -1; |
| 331 | } |
| 332 | /* |
| 333 | * check whether a storage device is attached (assume that it's |
| 334 | * a USB memory stick, since nothing else should be attached). |
| 335 | */ |
| 336 | au_usb_stor_curr_dev = usb_stor_scan(1); |
| 337 | if (au_usb_stor_curr_dev == -1) { |
| 338 | debug ("No device found. Not initialized?\n"); |
| 339 | return -1; |
| 340 | } |
| 341 | /* check whether it has a partition table */ |
| 342 | stor_dev = usb_stor_get_dev(au_usb_stor_curr_dev); |
| 343 | if (stor_dev->type == DEV_TYPE_UNKNOWN) { |
| 344 | debug ("uknown device type\n"); |
| 345 | return -1; |
| 346 | } |
| 347 | if (fat_register_device(stor_dev, 1) != 0) { |
| 348 | debug ("Unable to use USB %d:%d for fatls\n", |
| 349 | au_usb_stor_curr_dev, 1); |
| 350 | return -1; |
| 351 | } |
| 352 | if (file_fat_detectfs() != 0) { |
| 353 | debug ("file_fat_detectfs failed\n"); |
| 354 | } |
| 355 | /* initialize the array of file names */ |
| 356 | memset(aufile, 0, sizeof(aufile)); |
| 357 | aufile[IDX_PREPARE] = AU_PREPARE; |
| 358 | aufile[IDX_PREINST] = AU_PREINST; |
| 359 | aufile[IDX_FIRMWARE] = AU_FIRMWARE; |
| 360 | aufile[IDX_KERNEL] = AU_KERNEL; |
| 361 | aufile[IDX_APP] = AU_APP; |
| 362 | aufile[IDX_DISK] = AU_DISK; |
| 363 | aufile[IDX_POSTINST] = AU_POSTINST; |
| 364 | /* initialize the array of flash sizes */ |
| 365 | memset(ausize, 0, sizeof(ausize)); |
| 366 | ausize[IDX_FIRMWARE] = (AU_FL_FIRMWARE_ND + 1) - AU_FL_FIRMWARE_ST; |
| 367 | ausize[IDX_KERNEL] = (AU_FL_KERNEL_ND + 1) - AU_FL_KERNEL_ST; |
| 368 | ausize[IDX_APP] = (AU_FL_APP_ND + 1) - AU_FL_APP_ST; |
| 369 | ausize[IDX_DISK] = (AU_FL_DISK_ND + 1) - AU_FL_DISK_ST; |
| 370 | bitmap_first = 0; |
| 371 | /* just loop thru all the possible files */ |
| 372 | for (i = 0; i < AU_MAXFILES; i++) { |
| 373 | sz = file_fat_read(aufile[i], LOAD_ADDR, MAX_LOADSZ); |
| 374 | debug ("read %s sz %ld hdr %d\n", |
| 375 | aufile[i], sz, sizeof(image_header_t)); |
| 376 | if (sz <= 0 || sz <= sizeof(image_header_t)) { |
| 377 | debug ("%s not found\n", aufile[i]); |
| 378 | continue; |
| 379 | } |
| 380 | if (au_check_valid(i, sz) < 0) { |
| 381 | debug ("%s not valid\n", aufile[i]); |
| 382 | continue; |
| 383 | } |
| 384 | #ifdef CONFIG_VFD |
| 385 | /* now that we have a valid file we can display the */ |
| 386 | /* bitmap. */ |
| 387 | if (bitmap_first == 0) { |
| 388 | env = getenv("bitmap2"); |
| 389 | if (env == NULL) { |
| 390 | trab_vfd(0); |
| 391 | } else { |
| 392 | /* not so simple - bitmap2 is supposed to */ |
| 393 | /* contain the address of the bitmap */ |
| 394 | env = (char *)simple_strtoul(env, NULL, 16); |
| 395 | /* NOTE: these are taken from vfd_logo.h. If that file changes then */ |
| 396 | /* these defines MUST also be updated! These may be wrong for bitmap2. */ |
| 397 | #define VFD_LOGO_WIDTH 112 |
| 398 | #define VFD_LOGO_HEIGHT 72 |
| 399 | /* must call transfer_pic directly */ |
| 400 | transfer_pic(3, env, VFD_LOGO_HEIGHT, VFD_LOGO_WIDTH); |
| 401 | } |
| 402 | bitmap_first = 1; |
| 403 | } |
| 404 | #endif |
| 405 | /* this is really not a good idea, but it's what the */ |
| 406 | /* customer wants. */ |
| 407 | do { |
| 408 | res = au_do_update(i); |
| 409 | } while (res < 0); |
| 410 | au_update_eeprom(i); |
| 411 | } |
| 412 | return 0; |
| 413 | } |
| 414 | #endif /* CONFIG_AUTO_UPDATE */ |