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   1 /*
   2  * Copyright © 2012 Keith Packard <keithp@keithp.com>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 #include <err.h>
  19 #include <fcntl.h>
  20 #include <gelf.h>
  21 #include <stdio.h>
  22 #include <stdint.h>
  23 #include <stdlib.h>
  24 #include <sysexits.h>
  25 #include <unistd.h>
  26 #include <getopt.h>
  27 #include <string.h>
  28 #include <stdbool.h>
  29 #include "ao-elf.h"
  30 #include "ccdbg.h"
  31 #include "cc-usb.h"
  32 #include "cc.h"
  33 #include "ao-usbload.h"
  34 #include "ao-selfload.h"
  35 #include "ao-verbose.h"
  36 #include "ao-editaltos.h"
  37
  38 static uint16_t
  39 get_uint16(struct cc_usb *cc, uint32_t addr)
  40 {
  41         uint16_t        result;
  42         result = ao_self_get_uint16(cc, addr);
  43         printf ("read 0x%08x = 0x%04x\n", addr, result);
  44         return result;
  45 }
  46
  47 /*
  48  * Read a 32-bit value from the target device with arbitrary
  49  * alignment
  50  */
  51 static uint32_t
  52 get_uint32(struct cc_usb *cc, uint32_t addr)
  53 {
  54         uint32_t        result;
  55
  56         result = ao_self_get_uint32(cc, addr);
  57         printf ("read 0x%08x = 0x%08x\n", addr, result);
  58         return result;
  59 }
  60
  61 /*
  62  * Check to see if the target device has been
  63  * flashed with a similar firmware image before
  64  *
  65  * This is done by looking for the same romconfig version,
  66  * which should be at the same location as the linker script
  67  * places this at 0x100 from the start of the rom section
  68  */
  69 static int
  70 check_flashed(struct cc_usb *cc)
  71 {
  72         uint16_t        romconfig_version = get_uint16(cc, AO_ROMCONFIG_VERSION);
  73         uint16_t        romconfig_check = get_uint16(cc, AO_ROMCONFIG_CHECK);
  74
  75         if (romconfig_version != (uint16_t) ~romconfig_check) {
  76                 fprintf (stderr, "Device has not been flashed before\n");
  77                 return 0;
  78         }
  79         return 1;
  80 }
  81
  82 static const struct option options[] = {
  83         { .name = "tty", .has_arg = 1, .val = 'T' },
  84         { .name = "device", .has_arg = 1, .val = 'D' },
  85         { .name = "raw", .has_arg = 0, .val = 'r' },
  86         { .name = "cal", .has_arg = 1, .val = 'c' },
  87         { .name = "serial", .has_arg = 1, .val = 's' },
  88         { .name = "verbose", .has_arg = 1, .val = 'v' },
  89         { 0, 0, 0, 0},
  90 };
  91
  92 static void usage(char *program)
  93 {
  94         fprintf(stderr, "usage: %s [--raw] [--verbose=<verbose>] [--device=<device>] [-tty=<tty>] [--cal=<radio-cal>] [--serial=<serial>] file.{elf,ihx}\n", program);
  95         exit(1);
  96 }
  97
  98 void
  99 done(struct cc_usb *cc, int code)
 100 {
 101 /*      cc_usb_printf(cc, "a\n"); */
 102         cc_usb_close(cc);
 103         exit (code);
 104 }
 105
 106 static int
 107 ends_with(char *whole, char *suffix)
 108 {
 109         int whole_len = strlen(whole);
 110         int suffix_len = strlen(suffix);
 111
 112         if (suffix_len > whole_len)
 113                 return 0;
 114         return strcmp(whole + whole_len - suffix_len, suffix) == 0;
 115 }
 116
 117 int
 118 main (int argc, char **argv)
 119 {
 120         char                    *device = NULL;
 121         char                    *filename;
 122         Elf                     *e;
 123         int                     raw = 0;
 124         char                    *serial_end;
 125         unsigned int            serial = 0;
 126         char                    *serial_ucs2;
 127         int                     serial_ucs2_len;
 128         char                    serial_int[2];
 129         unsigned int            s;
 130         int                     i;
 131         int                     string_num;
 132         uint32_t                cal = 0;
 133         char                    cal_int[4];
 134         char                    *cal_end;
 135         int                     c;
 136         int                     was_flashed = 0;
 137         struct ao_hex_image     *load;
 138         int                     tries;
 139         struct cc_usb           *cc = NULL;
 140         char                    *tty = NULL;
 141         int                     success;
 142         int                     verbose = 0;
 143         struct ao_sym           *file_symbols;
 144         int                     num_file_symbols;
 145         uint32_t                flash_base, flash_bound;
 146         int                     has_flash_size = 0;
 147
 148         while ((c = getopt_long(argc, argv, "rT:D:c:s:v:", options, NULL)) != -1) {
 149                 switch (c) {
 150                 case 'T':
 151                         tty = optarg;
 152                         break;
 153                 case 'D':
 154                         device = optarg;
 155                         break;
 156                 case 'r':
 157                         raw = 1;
 158                         break;
 159                 case 'c':
 160                         cal = strtoul(optarg, &cal_end, 10);
 161                         if (cal_end == optarg || *cal_end != '\0')
 162                                 usage(argv[0]);
 163                         break;
 164                 case 's':
 165                         serial = strtoul(optarg, &serial_end, 10);
 166                         if (serial_end == optarg || *serial_end != '\0')
 167                                 usage(argv[0]);
 168                         break;
 169                 case 'v':
 170                         verbose++;
 171                         break;
 172                 default:
 173                         usage(argv[0]);
 174                         break;
 175                 }
 176         }
 177
 178         ao_verbose = verbose;
 179
 180         if (verbose > 1)
 181                 ccdbg_add_debug(CC_DEBUG_BITBANG);
 182
 183         filename = argv[optind];
 184         if (filename == NULL)
 185                 usage(argv[0]);
 186
 187         if (ends_with (filename, ".elf")) {
 188                 load = ao_load_elf(filename, &file_symbols, &num_file_symbols);
 189         } else if (ends_with (filename, ".ihx")) {
 190                 load = ao_hex_load(filename, &file_symbols, &num_file_symbols);
 191         } else
 192                 usage(argv[0]);
 193
 194         if (!raw) {
 195                 if (!ao_editaltos_find_symbols(file_symbols, num_file_symbols, ao_symbols, ao_num_symbols)) {
 196                         fprintf(stderr, "Cannot find required symbols\n");
 197                         usage(argv[0]);
 198                 }
 199         }
 200
 201         {
 202                 int     is_loader;
 203                 int     tries;
 204
 205                 for (tries = 0; tries < 3; tries++) {
 206                         char    *this_tty = tty;
 207                         if (!this_tty)
 208                                 this_tty = cc_usbdevs_find_by_arg(device, "AltosFlash");
 209                         if (!this_tty)
 210                                 this_tty = cc_usbdevs_find_by_arg(device, "TeleMega");
 211                         if (!this_tty)
 212                                 this_tty = getenv("ALTOS_TTY");
 213                         if (!this_tty)
 214                                 this_tty="/dev/ttyACM0";
 215
 216                         cc = cc_usb_open(this_tty);
 217
 218                         if (!cc)
 219                                 exit(1);
 220                         cc_usb_printf(cc, "v\n");
 221                         is_loader = 0;
 222                         for (;;) {
 223                                 char    line[256];
 224                                 cc_usb_getline(cc, line, sizeof(line));
 225                                 if (!strncmp(line, "altos-loader", 12))
 226                                         is_loader = 1;
 227                                 if (!strncmp(line, "flash-range", 11)) {
 228                                         int i;
 229                                         for (i = 11; i < strlen(line); i++)
 230                                                 if (line[i] != ' ')
 231                                                         break;
 232                                         if (sscanf(line + i, "%x %x", &flash_base, &flash_bound) == 2)
 233                                                 has_flash_size = 1;
 234                                 }
 235                                 if (!strncmp(line, "software-version", 16))
 236                                         break;
 237                         }
 238                         if (is_loader)
 239                                 break;
 240                         printf ("rebooting to loader\n");
 241                         cc_usb_printf(cc, "X\n");
 242                         cc_usb_close(cc);
 243                         sleep(1);
 244                         cc = NULL;
 245                 }
 246                 if (!is_loader) {
 247                         fprintf(stderr, "Cannot switch to boot loader\n");
 248                         exit(1);
 249                 }
 250 #if 0
 251                 {
 252                         uint8_t check[256];
 253                         int     i = 0;
 254
 255                         ao_self_block_read(cc, AO_BOOT_APPLICATION_BASE, check);
 256                         for (;;) {
 257                                 uint8_t block[256];
 258                                 putchar ('.');
 259                                 if (++i == 40) {
 260                                         putchar('\n');
 261                                         i = 0;
 262                                 }
 263                                 fflush(stdout);
 264                                 ao_self_block_write(cc, AO_BOOT_APPLICATION_BASE, block);
 265                                 ao_self_block_read(cc, AO_BOOT_APPLICATION_BASE, block);
 266                                 if (memcmp(block, check, 256) != 0) {
 267                                         fprintf (stderr, "read differed\n");
 268                                         exit(1);
 269                                 }
 270                         }
 271                 }
 272 #endif
 273         }
 274
 275         /* If the device can tell us the size of flash, make sure
 276          * the image fits in that
 277          */
 278         if (has_flash_size) {
 279                 if (load->address < flash_base ||
 280                     load->address + load->length > flash_bound)
 281                 {
 282                         fprintf(stderr, "Image does not fit on device.\n");
 283                         fprintf(stderr, "  Image base:  %08x bounds %08x\n",
 284                                 load->address, load->address + load->length);
 285                         fprintf(stderr, "  Device base: %08x bounds %08x\n",
 286                                 flash_base, flash_bound);
 287                         done(cc, 1);
 288                 }
 289         }
 290
 291         if (!raw) {
 292                 /* Go fetch existing config values
 293                  * if available
 294                  */
 295                 was_flashed = check_flashed(cc);
 296
 297                 if (!serial) {
 298                         if (!was_flashed) {
 299                                 fprintf (stderr, "Must provide serial number\n");
 300                                 done(cc, 1);
 301                         }
 302                         serial = get_uint16(cc, AO_SERIAL_NUMBER);
 303                         if (!serial || serial == 0xffff) {
 304                                 fprintf (stderr, "Invalid existing serial %d\n", serial);
 305                                 done(cc, 1);
 306                         }
 307                 }
 308
 309                 if (!cal && AO_RADIO_CAL && was_flashed) {
 310                         cal = get_uint32(cc, AO_RADIO_CAL);
 311                         if (!cal || cal == 0xffffffff) {
 312                                 fprintf (stderr, "Invalid existing rf cal %d\n", cal);
 313                                 done(cc, 1);
 314                         }
 315                 }
 316
 317                 if (!ao_editaltos(load, serial, cal))
 318                         done(cc, 1);
 319         }
 320
 321         /* And flash the resulting image to the device
 322          */
 323         success = ao_self_write(cc, load);
 324
 325         if (!success) {
 326                 fprintf (stderr, "\"%s\": Write failed\n", filename);
 327                 done(cc, 1);
 328         }
 329
 330         done(cc, 0);
 331 }