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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 = "cal", .has_arg = 1, .val = 'c' },
  86         { .name = "serial", .has_arg = 1, .val = 's' },
  87         { .name = "verbose", .has_arg = 1, .val = 'v' },
  88         { 0, 0, 0, 0},
  89 };
  90
  91 static void usage(char *program)
  92 {
  93         fprintf(stderr, "usage: %s [--verbose=<verbose>] [--device=<device>] [-tty=<tty>] [--cal=<radio-cal>] [--serial=<serial>] file.{elf,ihx}\n", program);
  94         exit(1);
  95 }
  96
  97 void
  98 done(struct cc_usb *cc, int code)
  99 {
 100 /*      cc_usb_printf(cc, "a\n"); */
 101         cc_usb_close(cc);
 102         exit (code);
 103 }
 104
 105 static int
 106 ends_with(char *whole, char *suffix)
 107 {
 108         int whole_len = strlen(whole);
 109         int suffix_len = strlen(suffix);
 110
 111         if (suffix_len > whole_len)
 112                 return 0;
 113         return strcmp(whole + whole_len - suffix_len, suffix) == 0;
 114 }
 115
 116 int
 117 main (int argc, char **argv)
 118 {
 119         char                    *device = NULL;
 120         char                    *filename;
 121         Elf                     *e;
 122         char                    *serial_end;
 123         unsigned int            serial = 0;
 124         char                    *serial_ucs2;
 125         int                     serial_ucs2_len;
 126         char                    serial_int[2];
 127         unsigned int            s;
 128         int                     i;
 129         int                     string_num;
 130         uint32_t                cal = 0;
 131         char                    cal_int[4];
 132         char                    *cal_end;
 133         int                     c;
 134         int                     was_flashed = 0;
 135         struct ao_hex_image     *load;
 136         int                     tries;
 137         struct cc_usb           *cc = NULL;
 138         char                    *tty = NULL;
 139         int                     success;
 140         int                     verbose = 0;
 141         struct ao_sym           *file_symbols;
 142         int                     num_file_symbols;
 143
 144         while ((c = getopt_long(argc, argv, "T:D:c:s:v:", options, NULL)) != -1) {
 145                 switch (c) {
 146                 case 'T':
 147                         tty = optarg;
 148                         break;
 149                 case 'D':
 150                         device = optarg;
 151                         break;
 152                 case 'c':
 153                         cal = strtoul(optarg, &cal_end, 10);
 154                         if (cal_end == optarg || *cal_end != '\0')
 155                                 usage(argv[0]);
 156                         break;
 157                 case 's':
 158                         serial = strtoul(optarg, &serial_end, 10);
 159                         if (serial_end == optarg || *serial_end != '\0')
 160                                 usage(argv[0]);
 161                         break;
 162                 case 'v':
 163                         verbose++;
 164                         break;
 165                 default:
 166                         usage(argv[0]);
 167                         break;
 168                 }
 169         }
 170
 171         ao_verbose = verbose;
 172
 173         if (verbose > 1)
 174                 ccdbg_add_debug(CC_DEBUG_BITBANG);
 175
 176         filename = argv[optind];
 177         if (filename == NULL)
 178                 usage(argv[0]);
 179
 180         if (ends_with (filename, ".elf")) {
 181                 load = ao_load_elf(filename, &file_symbols, &num_file_symbols);
 182         } else if (ends_with (filename, ".ihx")) {
 183                 load = ao_hex_load(filename, &file_symbols, &num_file_symbols);
 184         } else
 185                 usage(argv[0]);
 186
 187         if (!ao_editaltos_find_symbols(file_symbols, num_file_symbols, ao_symbols, ao_num_symbols)) {
 188                 fprintf(stderr, "Cannot find required symbols\n");
 189                 usage(argv[0]);
 190         }
 191
 192         {
 193                 int     is_loader;
 194                 int     tries;
 195
 196                 for (tries = 0; tries < 3; tries++) {
 197                         char    *this_tty = tty;
 198                         if (!this_tty)
 199                                 this_tty = cc_usbdevs_find_by_arg(device, "AltosFlash");
 200                         if (!this_tty)
 201                                 this_tty = cc_usbdevs_find_by_arg(device, "MegaMetrum");
 202                         if (!this_tty)
 203                                 this_tty = getenv("ALTOS_TTY");
 204                         if (!this_tty)
 205                                 this_tty="/dev/ttyACM0";
 206
 207                         cc = cc_usb_open(this_tty);
 208
 209                         if (!cc)
 210                                 exit(1);
 211                         cc_usb_printf(cc, "v\n");
 212                         is_loader = 0;
 213                         for (;;) {
 214                                 char    line[256];
 215                                 cc_usb_getline(cc, line, sizeof(line));
 216                                 if (!strncmp(line, "altos-loader", 12))
 217                                         is_loader = 1;
 218                                 if (!strncmp(line, "software-version", 16))
 219                                         break;
 220                         }
 221                         if (is_loader)
 222                                 break;
 223                         printf ("rebooting to loader\n");
 224                         cc_usb_printf(cc, "X\n");
 225                         cc_usb_close(cc);
 226                         sleep(1);
 227                         cc = NULL;
 228                 }
 229                 if (!is_loader) {
 230                         fprintf(stderr, "Cannot switch to boot loader\n");
 231                         exit(1);
 232                 }
 233 #if 0
 234                 {
 235                         uint8_t check[256];
 236                         int     i = 0;
 237
 238                         ao_self_block_read(cc, AO_BOOT_APPLICATION_BASE, check);
 239                         for (;;) {
 240                                 uint8_t block[256];
 241                                 putchar ('.');
 242                                 if (++i == 40) {
 243                                         putchar('\n');
 244                                         i = 0;
 245                                 }
 246                                 fflush(stdout);
 247                                 ao_self_block_write(cc, AO_BOOT_APPLICATION_BASE, block);
 248                                 ao_self_block_read(cc, AO_BOOT_APPLICATION_BASE, block);
 249                                 if (memcmp(block, check, 256) != 0) {
 250                                         fprintf (stderr, "read differed\n");
 251                                         exit(1);
 252                                 }
 253                         }
 254                 }
 255 #endif
 256         }
 257
 258         /* Go fetch existing config values
 259          * if available
 260          */
 261         was_flashed = check_flashed(cc);
 262
 263         if (!serial) {
 264                 if (!was_flashed) {
 265                         fprintf (stderr, "Must provide serial number\n");
 266                         done(cc, 1);
 267                 }
 268                 serial = get_uint16(cc, AO_SERIAL_NUMBER);
 269                 if (!serial || serial == 0xffff) {
 270                         fprintf (stderr, "Invalid existing serial %d\n", serial);
 271                         done(cc, 1);
 272                 }
 273         }
 274
 275         if (!cal && AO_RADIO_CAL && was_flashed) {
 276                 cal = get_uint32(cc, AO_RADIO_CAL);
 277                 if (!cal || cal == 0xffffffff) {
 278                         fprintf (stderr, "Invalid existing rf cal %d\n", cal);
 279                         done(cc, 1);
 280                 }
 281         }
 282
 283         if (!ao_editaltos(load, serial, cal))
 284                 done(cc, 1);
 285
 286         /* And flash the resulting image to the device
 287          */
 288         success = ao_self_write(cc, load);
 289
 290         if (!success) {
 291                 fprintf (stderr, "\"%s\": Write failed\n", filename);
 292                 done(cc, 1);
 293         }
 294
 295         done(cc, 0);
 296 }