tools/kwboot.c

   1 /*
   2  * Boot a Marvell SoC, with Xmodem over UART0.
   3  *  supports Kirkwood, Dove, Armada 370, Armada XP
   4  *
   5  * (c) 2012 Daniel Stodden <daniel.stodden@gmail.com>
   6  *
   7  * References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
   8  *   Integrated Controller: Functional Specifications" December 2,
   9  *   2008. Chapter 24.2 "BootROM Firmware".
  10  */
  11
  12 #include "kwbimage.h"
  13 #include "mkimage.h"
  14 #include "version.h"
  15
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18 #include <string.h>
  19 #include <stdarg.h>
  20 #include <image.h>
  21 #include <libgen.h>
  22 #include <fcntl.h>
  23 #include <errno.h>
  24 #include <unistd.h>
  25 #include <stdint.h>
  26 #include <time.h>
  27 #include <sys/stat.h>
  28
  29 #ifdef __linux__
  30 #include "termios_linux.h"
  31 #else
  32 #include <termios.h>
  33 #endif
  34
  35 /*
  36  * Marvell BootROM UART Sensing
  37  */
  38
  39 static unsigned char kwboot_msg_boot[] = {
  40         0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
  41 };
  42
  43 static unsigned char kwboot_msg_debug[] = {
  44         0xDD, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
  45 };
  46
  47 /* Defines known to work on Kirkwood */
  48 #define KWBOOT_MSG_REQ_DELAY    10 /* ms */
  49 #define KWBOOT_MSG_RSP_TIMEO    50 /* ms */
  50
  51 /* Defines known to work on Armada XP */
  52 #define KWBOOT_MSG_REQ_DELAY_AXP        1000 /* ms */
  53 #define KWBOOT_MSG_RSP_TIMEO_AXP        1000 /* ms */
  54
  55 /*
  56  * Xmodem Transfers
  57  */
  58
  59 #define SOH     1       /* sender start of block header */
  60 #define EOT     4       /* sender end of block transfer */
  61 #define ACK     6       /* target block ack */
  62 #define NAK     21      /* target block negative ack */
  63 #define CAN     24      /* target/sender transfer cancellation */
  64
  65 #define KWBOOT_XM_BLKSZ 128 /* xmodem block size */
  66
  67 struct kwboot_block {
  68         uint8_t soh;
  69         uint8_t pnum;
  70         uint8_t _pnum;
  71         uint8_t data[KWBOOT_XM_BLKSZ];
  72         uint8_t csum;
  73 } __packed;
  74
  75 #define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */
  76 #define KWBOOT_HDR_RSP_TIMEO 10000 /* ms */
  77
  78 /* ARM code making baudrate changing function return to original exec address */
  79 static unsigned char kwboot_pre_baud_code[] = {
  80                                 /* exec_addr:                                 */
  81         0x00, 0x00, 0x00, 0x00, /* .word 0                                    */
  82         0x0c, 0xe0, 0x1f, 0xe5, /* ldr lr, exec_addr                          */
  83 };
  84
  85 /* ARM code for binary header injection to change baudrate */
  86 static unsigned char kwboot_baud_code[] = {
  87                                 /* ; #define UART_BASE 0xd0012000             */
  88                                 /* ; #define THR       0x00                   */
  89                                 /* ; #define DLL       0x00                   */
  90                                 /* ; #define DLH       0x04                   */
  91                                 /* ; #define LCR       0x0c                   */
  92                                 /* ; #define   DLAB    0x80                   */
  93                                 /* ; #define LSR       0x14                   */
  94                                 /* ; #define   THRE    0x20                   */
  95                                 /* ; #define   TEMT    0x40                   */
  96                                 /* ; #define DIV_ROUND(a, b) ((a + b/2) / b)  */
  97                                 /* ;                                          */
  98                                 /* ; u32 set_baudrate(u32 old_b, u32 new_b) { */
  99                                 /* ;   const u8 *str = "$baudratechange";     */
 100                                 /* ;   u8 c;                                  */
 101                                 /* ;   do {                                   */
 102                                 /* ;       c = *str++;                        */
 103                                 /* ;       writel(UART_BASE + THR, c);        */
 104                                 /* ;   } while (c);                           */
 105                                 /* ;   while                                  */
 106                                 /* ;      (!(readl(UART_BASE + LSR) & TEMT)); */
 107                                 /* ;   u32 lcr = readl(UART_BASE + LCR);      */
 108                                 /* ;   writel(UART_BASE + LCR, lcr | DLAB);   */
 109                                 /* ;   u8 old_dll = readl(UART_BASE + DLL);   */
 110                                 /* ;   u8 old_dlh = readl(UART_BASE + DLH);   */
 111                                 /* ;   u16 old_dl = old_dll | (old_dlh << 8); */
 112                                 /* ;   u32 clk = old_b * old_dl;              */
 113                                 /* ;   u16 new_dl = DIV_ROUND(clk, new_b);    */
 114                                 /* ;   u8 new_dll = new_dl & 0xff;            */
 115                                 /* ;   u8 new_dlh = (new_dl >> 8) & 0xff;     */
 116                                 /* ;   writel(UART_BASE + DLL, new_dll);      */
 117                                 /* ;   writel(UART_BASE + DLH, new_dlh);      */
 118                                 /* ;   writel(UART_BASE + LCR, lcr & ~DLAB);  */
 119                                 /* ;   msleep(1);                             */
 120                                 /* ;   return 0;                              */
 121                                 /* ; }                                        */
 122
 123         0xfe, 0x5f, 0x2d, 0xe9, /* push  { r1 - r12, lr }                     */
 124
 125                                 /*  ; r0 = UART_BASE                          */
 126         0x02, 0x0a, 0xa0, 0xe3, /* mov   r0, #0x2000                          */
 127         0x01, 0x00, 0x4d, 0xe3, /* movt  r0, #0xd001                          */
 128
 129                                 /*  ; r2 = address of preamble string         */
 130         0xd0, 0x20, 0x8f, 0xe2, /* adr   r2, preamble                         */
 131
 132                                 /*  ; Send preamble string over UART          */
 133                                 /* .Lloop_preamble:                           */
 134                                 /*                                            */
 135                                 /*  ; Wait until Transmitter Holding is Empty */
 136                                 /* .Lloop_thre:                               */
 137                                 /*  ; r1 = UART_BASE[LSR] & THRE              */
 138         0x14, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x14]                      */
 139         0x20, 0x00, 0x11, 0xe3, /* tst   r1, #0x20                            */
 140         0xfc, 0xff, 0xff, 0x0a, /* beq   .Lloop_thre                          */
 141
 142                                 /*  ; Put character into Transmitter FIFO     */
 143                                 /*  ; r1 = *r2++                              */
 144         0x01, 0x10, 0xd2, 0xe4, /* ldrb  r1, [r2], #1                         */
 145                                 /*  ; UART_BASE[THR] = r1                     */
 146         0x00, 0x10, 0x80, 0xe5, /* str   r1, [r0, #0x0]                       */
 147
 148                                 /*  ; Loop until end of preamble string       */
 149         0x00, 0x00, 0x51, 0xe3, /* cmp   r1, #0                               */
 150         0xf8, 0xff, 0xff, 0x1a, /* bne   .Lloop_preamble                      */
 151
 152                                 /*  ; Wait until Transmitter FIFO is Empty    */
 153                                 /* .Lloop_txempty:                            */
 154                                 /*  ; r1 = UART_BASE[LSR] & TEMT              */
 155         0x14, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x14]                      */
 156         0x40, 0x00, 0x11, 0xe3, /* tst   r1, #0x40                            */
 157         0xfc, 0xff, 0xff, 0x0a, /* beq   .Lloop_txempty                       */
 158
 159                                 /*  ; Set Divisor Latch Access Bit            */
 160                                 /*  ; UART_BASE[LCR] |= DLAB                  */
 161         0x0c, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x0c]                      */
 162         0x80, 0x10, 0x81, 0xe3, /* orr   r1, r1, #0x80                        */
 163         0x0c, 0x10, 0x80, 0xe5, /* str   r1, [r0, #0x0c]                      */
 164
 165                                 /*  ; Read current Divisor Latch              */
 166                                 /*  ; r1 = UART_BASE[DLH]<<8 | UART_BASE[DLL] */
 167         0x00, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x00]                      */
 168         0xff, 0x10, 0x01, 0xe2, /* and   r1, r1, #0xff                        */
 169         0x01, 0x20, 0xa0, 0xe1, /* mov   r2, r1                               */
 170         0x04, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x04]                      */
 171         0xff, 0x10, 0x01, 0xe2, /* and   r1, r1, #0xff                        */
 172         0x41, 0x14, 0xa0, 0xe1, /* asr   r1, r1, #8                           */
 173         0x02, 0x10, 0x81, 0xe1, /* orr   r1, r1, r2                           */
 174
 175                                 /*  ; Read old baudrate value                 */
 176                                 /*  ; r2 = old_baudrate                       */
 177         0x8c, 0x20, 0x9f, 0xe5, /* ldr   r2, old_baudrate                     */
 178
 179                                 /*  ; Calculate base clock                    */
 180                                 /*  ; r1 = r2 * r1                            */
 181         0x92, 0x01, 0x01, 0xe0, /* mul   r1, r2, r1                           */
 182
 183                                 /*  ; Read new baudrate value                 */
 184                                 /*  ; r2 = baudrate                           */
 185         0x88, 0x20, 0x9f, 0xe5, /* ldr   r2, baudrate                         */
 186
 187                                 /*  ; Calculate new Divisor Latch             */
 188                                 /*  ; r1 = DIV_ROUND(r1, r2) =                */
 189                                 /*  ;    = (r1 + r2/2) / r2                   */
 190         0xa2, 0x10, 0x81, 0xe0, /* add   r1, r1, r2, lsr #1                   */
 191         0x02, 0x40, 0xa0, 0xe1, /* mov   r4, r2                               */
 192         0xa1, 0x00, 0x54, 0xe1, /* cmp   r4, r1, lsr #1                       */
 193                                 /* .Lloop_div1:                               */
 194         0x84, 0x40, 0xa0, 0x91, /* movls r4, r4, lsl #1                       */
 195         0xa1, 0x00, 0x54, 0xe1, /* cmp   r4, r1, lsr #1                       */
 196         0xfc, 0xff, 0xff, 0x9a, /* bls   .Lloop_div1                          */
 197         0x00, 0x30, 0xa0, 0xe3, /* mov   r3, #0                               */
 198                                 /* .Lloop_div2:                               */
 199         0x04, 0x00, 0x51, 0xe1, /* cmp   r1, r4                               */
 200         0x04, 0x10, 0x41, 0x20, /* subhs r1, r1, r4                           */
 201         0x03, 0x30, 0xa3, 0xe0, /* adc   r3, r3, r3                           */
 202         0xa4, 0x40, 0xa0, 0xe1, /* mov   r4, r4, lsr #1                       */
 203         0x02, 0x00, 0x54, 0xe1, /* cmp   r4, r2                               */
 204         0xf9, 0xff, 0xff, 0x2a, /* bhs   .Lloop_div2                          */
 205         0x03, 0x10, 0xa0, 0xe1, /* mov   r1, r3                               */
 206
 207                                 /*  ; Set new Divisor Latch Low               */
 208                                 /*  ; UART_BASE[DLL] = r1 & 0xff              */
 209         0x01, 0x20, 0xa0, 0xe1, /* mov   r2, r1                               */
 210         0xff, 0x20, 0x02, 0xe2, /* and   r2, r2, #0xff                        */
 211         0x00, 0x20, 0x80, 0xe5, /* str   r2, [r0, #0x00]                      */
 212
 213                                 /*  ; Set new Divisor Latch High              */
 214                                 /*  ; UART_BASE[DLH] = r1>>8 & 0xff           */
 215         0x41, 0x24, 0xa0, 0xe1, /* asr   r2, r1, #8                           */
 216         0xff, 0x20, 0x02, 0xe2, /* and   r2, r2, #0xff                        */
 217         0x04, 0x20, 0x80, 0xe5, /* str   r2, [r0, #0x04]                      */
 218
 219                                 /*  ; Clear Divisor Latch Access Bit          */
 220                                 /*  ; UART_BASE[LCR] &= ~DLAB                 */
 221         0x0c, 0x10, 0x90, 0xe5, /* ldr   r1, [r0, #0x0c]                      */
 222         0x80, 0x10, 0xc1, 0xe3, /* bic   r1, r1, #0x80                        */
 223         0x0c, 0x10, 0x80, 0xe5, /* str   r1, [r0, #0x0c]                      */
 224
 225                                 /*  ; Sleep 1ms ~~ 600000 cycles at 1200 MHz  */
 226                                 /*  ; r1 = 600000                             */
 227         0x9f, 0x1d, 0xa0, 0xe3, /* mov   r1, #0x27c0                          */
 228         0x09, 0x10, 0x40, 0xe3, /* movt  r1, #0x0009                          */
 229                                 /* .Lloop_sleep:                              */
 230         0x01, 0x10, 0x41, 0xe2, /* sub   r1, r1, #1                           */
 231         0x00, 0x00, 0x51, 0xe3, /* cmp   r1, #0                               */
 232         0xfc, 0xff, 0xff, 0x1a, /* bne   .Lloop_sleep                         */
 233
 234                                 /*  ; Return 0 - no error                     */
 235         0x00, 0x00, 0xa0, 0xe3, /* mov   r0, #0                               */
 236         0xfe, 0x9f, 0xbd, 0xe8, /* pop   { r1 - r12, pc }                     */
 237
 238                                 /*  ; Preamble string                         */
 239                                 /* preamble:                                  */
 240         0x24, 0x62, 0x61, 0x75, /* .asciz "$baudratechange"                   */
 241         0x64, 0x72, 0x61, 0x74,
 242         0x65, 0x63, 0x68, 0x61,
 243         0x6e, 0x67, 0x65, 0x00,
 244
 245                                 /*  ; Placeholder for old baudrate value      */
 246                                 /* old_baudrate:                              */
 247         0x00, 0x00, 0x00, 0x00, /* .word 0                                    */
 248
 249                                 /*  ; Placeholder for new baudrate value      */
 250                                 /* new_baudrate:                              */
 251         0x00, 0x00, 0x00, 0x00, /* .word 0                                    */
 252 };
 253
 254 #define KWBOOT_BAUDRATE_BIN_HEADER_SZ (sizeof(kwboot_baud_code) + \
 255                                        sizeof(struct opt_hdr_v1) + 8)
 256
 257 static const char kwb_baud_magic[16] = "$baudratechange";
 258
 259 static int kwboot_verbose;
 260
 261 static int msg_req_delay = KWBOOT_MSG_REQ_DELAY;
 262 static int msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO;
 263 static int blk_rsp_timeo = KWBOOT_BLK_RSP_TIMEO;
 264
 265 static ssize_t
 266 kwboot_write(int fd, const char *buf, size_t len)
 267 {
 268         size_t tot = 0;
 269
 270         while (tot < len) {
 271                 ssize_t wr = write(fd, buf + tot, len - tot);
 272
 273                 if (wr < 0)
 274                         return -1;
 275
 276                 tot += wr;
 277         }
 278
 279         return tot;
 280 }
 281
 282 static void
 283 kwboot_printv(const char *fmt, ...)
 284 {
 285         va_list ap;
 286
 287         if (kwboot_verbose) {
 288                 va_start(ap, fmt);
 289                 vprintf(fmt, ap);
 290                 va_end(ap);
 291                 fflush(stdout);
 292         }
 293 }
 294
 295 static void
 296 __spinner(void)
 297 {
 298         const char seq[] = { '-', '\\', '|', '/' };
 299         const int div = 8;
 300         static int state, bs;
 301
 302         if (state % div == 0) {
 303                 fputc(bs, stdout);
 304                 fputc(seq[state / div % sizeof(seq)], stdout);
 305                 fflush(stdout);
 306         }
 307
 308         bs = '\b';
 309         state++;
 310 }
 311
 312 static void
 313 kwboot_spinner(void)
 314 {
 315         if (kwboot_verbose)
 316                 __spinner();
 317 }
 318
 319 static void
 320 __progress(int pct, char c)
 321 {
 322         const int width = 70;
 323         static const char *nl = "";
 324         static int pos;
 325
 326         if (pos % width == 0)
 327                 printf("%s%3d %% [", nl, pct);
 328
 329         fputc(c, stdout);
 330
 331         nl = "]\n";
 332         pos = (pos + 1) % width;
 333
 334         if (pct == 100) {
 335                 while (pos && pos++ < width)
 336                         fputc(' ', stdout);
 337                 fputs(nl, stdout);
 338                 nl = "";
 339                 pos = 0;
 340         }
 341
 342         fflush(stdout);
 343
 344 }
 345
 346 static void
 347 kwboot_progress(int _pct, char c)
 348 {
 349         static int pct;
 350
 351         if (_pct != -1)
 352                 pct = _pct;
 353
 354         if (kwboot_verbose)
 355                 __progress(pct, c);
 356
 357         if (pct == 100)
 358                 pct = 0;
 359 }
 360
 361 static int
 362 kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
 363 {
 364         int rc, nfds;
 365         fd_set rfds;
 366         struct timeval tv;
 367         ssize_t n;
 368
 369         rc = -1;
 370
 371         FD_ZERO(&rfds);
 372         FD_SET(fd, &rfds);
 373
 374         tv.tv_sec = 0;
 375         tv.tv_usec = timeo * 1000;
 376         if (tv.tv_usec > 1000000) {
 377                 tv.tv_sec += tv.tv_usec / 1000000;
 378                 tv.tv_usec %= 1000000;
 379         }
 380
 381         do {
 382                 nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
 383                 if (nfds < 0)
 384                         goto out;
 385                 if (!nfds) {
 386                         errno = ETIMEDOUT;
 387                         goto out;
 388                 }
 389
 390                 n = read(fd, buf, len);
 391                 if (n <= 0)
 392                         goto out;
 393
 394                 buf = (char *)buf + n;
 395                 len -= n;
 396         } while (len > 0);
 397
 398         rc = 0;
 399 out:
 400         return rc;
 401 }
 402
 403 static int
 404 kwboot_tty_send(int fd, const void *buf, size_t len)
 405 {
 406         if (!buf)
 407                 return 0;
 408
 409         if (kwboot_write(fd, buf, len) < 0)
 410                 return -1;
 411
 412         return tcdrain(fd);
 413 }
 414
 415 static int
 416 kwboot_tty_send_char(int fd, unsigned char c)
 417 {
 418         return kwboot_tty_send(fd, &c, 1);
 419 }
 420
 421 static speed_t
 422 kwboot_tty_baudrate_to_speed(int baudrate)
 423 {
 424         switch (baudrate) {
 425 #ifdef B4000000
 426         case 4000000:
 427                 return B4000000;
 428 #endif
 429 #ifdef B3500000
 430         case 3500000:
 431                 return B3500000;
 432 #endif
 433 #ifdef B3000000
 434         case 3000000:
 435                 return B3000000;
 436 #endif
 437 #ifdef B2500000
 438         case 2500000:
 439                 return B2500000;
 440 #endif
 441 #ifdef B2000000
 442         case 2000000:
 443                 return B2000000;
 444 #endif
 445 #ifdef B1500000
 446         case 1500000:
 447                 return B1500000;
 448 #endif
 449 #ifdef B1152000
 450         case 1152000:
 451                 return B1152000;
 452 #endif
 453 #ifdef B1000000
 454         case 1000000:
 455                 return B1000000;
 456 #endif
 457 #ifdef B921600
 458         case 921600:
 459                 return B921600;
 460 #endif
 461 #ifdef B614400
 462         case 614400:
 463                 return B614400;
 464 #endif
 465 #ifdef B576000
 466         case 576000:
 467                 return B576000;
 468 #endif
 469 #ifdef B500000
 470         case 500000:
 471                 return B500000;
 472 #endif
 473 #ifdef B460800
 474         case 460800:
 475                 return B460800;
 476 #endif
 477 #ifdef B307200
 478         case 307200:
 479                 return B307200;
 480 #endif
 481 #ifdef B230400
 482         case 230400:
 483                 return B230400;
 484 #endif
 485 #ifdef B153600
 486         case 153600:
 487                 return B153600;
 488 #endif
 489 #ifdef B115200
 490         case 115200:
 491                 return B115200;
 492 #endif
 493 #ifdef B76800
 494         case 76800:
 495                 return B76800;
 496 #endif
 497 #ifdef B57600
 498         case 57600:
 499                 return B57600;
 500 #endif
 501 #ifdef B38400
 502         case 38400:
 503                 return B38400;
 504 #endif
 505 #ifdef B19200
 506         case 19200:
 507                 return B19200;
 508 #endif
 509 #ifdef B9600
 510         case 9600:
 511                 return B9600;
 512 #endif
 513 #ifdef B4800
 514         case 4800:
 515                 return B4800;
 516 #endif
 517 #ifdef B2400
 518         case 2400:
 519                 return B2400;
 520 #endif
 521 #ifdef B1800
 522         case 1800:
 523                 return B1800;
 524 #endif
 525 #ifdef B1200
 526         case 1200:
 527                 return B1200;
 528 #endif
 529 #ifdef B600
 530         case 600:
 531                 return B600;
 532 #endif
 533 #ifdef B300
 534         case 300:
 535                 return B300;
 536 #endif
 537 #ifdef B200
 538         case 200:
 539                 return B200;
 540 #endif
 541 #ifdef B150
 542         case 150:
 543                 return B150;
 544 #endif
 545 #ifdef B134
 546         case 134:
 547                 return B134;
 548 #endif
 549 #ifdef B110
 550         case 110:
 551                 return B110;
 552 #endif
 553 #ifdef B75
 554         case 75:
 555                 return B75;
 556 #endif
 557 #ifdef B50
 558         case 50:
 559                 return B50;
 560 #endif
 561         default:
 562 #ifdef BOTHER
 563                 return BOTHER;
 564 #else
 565                 return B0;
 566 #endif
 567         }
 568 }
 569
 570 static int
 571 kwboot_tty_change_baudrate(int fd, int baudrate)
 572 {
 573         struct termios tio;
 574         speed_t speed;
 575         int rc;
 576
 577         rc = tcgetattr(fd, &tio);
 578         if (rc)
 579                 return rc;
 580
 581         speed = kwboot_tty_baudrate_to_speed(baudrate);
 582         if (speed == B0) {
 583                 errno = EINVAL;
 584                 return -1;
 585         }
 586
 587 #ifdef BOTHER
 588         if (speed == BOTHER)
 589                 tio.c_ospeed = tio.c_ispeed = baudrate;
 590 #endif
 591
 592         rc = cfsetospeed(&tio, speed);
 593         if (rc)
 594                 return rc;
 595
 596         rc = cfsetispeed(&tio, speed);
 597         if (rc)
 598                 return rc;
 599
 600         rc = tcsetattr(fd, TCSANOW, &tio);
 601         if (rc)
 602                 return rc;
 603
 604         return 0;
 605 }
 606
 607 static int
 608 kwboot_open_tty(const char *path, int baudrate)
 609 {
 610         int rc, fd;
 611         struct termios tio;
 612
 613         rc = -1;
 614
 615         fd = open(path, O_RDWR|O_NOCTTY|O_NDELAY);
 616         if (fd < 0)
 617                 goto out;
 618
 619         memset(&tio, 0, sizeof(tio));
 620
 621         tio.c_iflag = 0;
 622         tio.c_cflag = CREAD|CLOCAL|CS8;
 623
 624         tio.c_cc[VMIN] = 1;
 625         tio.c_cc[VTIME] = 10;
 626
 627         rc = tcsetattr(fd, TCSANOW, &tio);
 628         if (rc)
 629                 goto out;
 630
 631         rc = kwboot_tty_change_baudrate(fd, baudrate);
 632         if (rc)
 633                 goto out;
 634
 635         rc = fd;
 636 out:
 637         if (rc < 0) {
 638                 if (fd >= 0)
 639                         close(fd);
 640         }
 641
 642         return rc;
 643 }
 644
 645 static int
 646 kwboot_bootmsg(int tty, void *msg)
 647 {
 648         int rc;
 649         char c;
 650         int count;
 651
 652         if (msg == NULL)
 653                 kwboot_printv("Please reboot the target into UART boot mode...");
 654         else
 655                 kwboot_printv("Sending boot message. Please reboot the target...");
 656
 657         do {
 658                 rc = tcflush(tty, TCIOFLUSH);
 659                 if (rc)
 660                         break;
 661
 662                 for (count = 0; count < 128; count++) {
 663                         rc = kwboot_tty_send(tty, msg, 8);
 664                         if (rc) {
 665                                 usleep(msg_req_delay * 1000);
 666                                 continue;
 667                         }
 668                 }
 669
 670                 rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
 671
 672                 kwboot_spinner();
 673
 674         } while (rc || c != NAK);
 675
 676         kwboot_printv("\n");
 677
 678         return rc;
 679 }
 680
 681 static int
 682 kwboot_debugmsg(int tty, void *msg)
 683 {
 684         int rc;
 685
 686         kwboot_printv("Sending debug message. Please reboot the target...");
 687
 688         do {
 689                 char buf[16];
 690
 691                 rc = tcflush(tty, TCIOFLUSH);
 692                 if (rc)
 693                         break;
 694
 695                 rc = kwboot_tty_send(tty, msg, 8);
 696                 if (rc) {
 697                         usleep(msg_req_delay * 1000);
 698                         continue;
 699                 }
 700
 701                 rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);
 702
 703                 kwboot_spinner();
 704
 705         } while (rc);
 706
 707         kwboot_printv("\n");
 708
 709         return rc;
 710 }
 711
 712 static size_t
 713 kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
 714                     size_t size, int pnum)
 715 {
 716         size_t i, n;
 717
 718         block->soh = SOH;
 719         block->pnum = pnum;
 720         block->_pnum = ~block->pnum;
 721
 722         n = size < KWBOOT_XM_BLKSZ ? size : KWBOOT_XM_BLKSZ;
 723         memcpy(&block->data[0], data, n);
 724         memset(&block->data[n], 0, KWBOOT_XM_BLKSZ - n);
 725
 726         block->csum = 0;
 727         for (i = 0; i < n; i++)
 728                 block->csum += block->data[i];
 729
 730         return n;
 731 }
 732
 733 static uint64_t
 734 _now(void)
 735 {
 736         struct timespec ts;
 737
 738         if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
 739                 static int err_print;
 740
 741                 if (!err_print) {
 742                         perror("clock_gettime() does not work");
 743                         err_print = 1;
 744                 }
 745
 746                 /* this will just make the timeout not work */
 747                 return -1ULL;
 748         }
 749
 750         return ts.tv_sec * 1000ULL + (ts.tv_nsec + 500000) / 1000000;
 751 }
 752
 753 static int
 754 _is_xm_reply(char c)
 755 {
 756         return c == ACK || c == NAK || c == CAN;
 757 }
 758
 759 static int
 760 _xm_reply_to_error(int c)
 761 {
 762         int rc = -1;
 763
 764         switch (c) {
 765         case ACK:
 766                 rc = 0;
 767                 break;
 768         case NAK:
 769                 errno = EBADMSG;
 770                 break;
 771         case CAN:
 772                 errno = ECANCELED;
 773                 break;
 774         default:
 775                 errno = EPROTO;
 776                 break;
 777         }
 778
 779         return rc;
 780 }
 781
 782 static int
 783 kwboot_baud_magic_handle(int fd, char c, int baudrate)
 784 {
 785         static size_t rcv_len;
 786
 787         if (rcv_len < sizeof(kwb_baud_magic)) {
 788                 /* try to recognize whole magic word */
 789                 if (c == kwb_baud_magic[rcv_len]) {
 790                         rcv_len++;
 791                 } else {
 792                         printf("%.*s%c", (int)rcv_len, kwb_baud_magic, c);
 793                         fflush(stdout);
 794                         rcv_len = 0;
 795                 }
 796         }
 797
 798         if (rcv_len == sizeof(kwb_baud_magic)) {
 799                 /* magic word received */
 800                 kwboot_printv("\nChanging baudrate to %d Bd\n", baudrate);
 801
 802                 return kwboot_tty_change_baudrate(fd, baudrate) ? : 1;
 803         } else {
 804                 return 0;
 805         }
 806 }
 807
 808 static int
 809 kwboot_xm_recv_reply(int fd, char *c, int allow_non_xm, int *non_xm_print,
 810                      int baudrate, int *baud_changed)
 811 {
 812         int timeout = allow_non_xm ? KWBOOT_HDR_RSP_TIMEO : blk_rsp_timeo;
 813         uint64_t recv_until = _now() + timeout;
 814         int rc;
 815
 816         if (non_xm_print)
 817                 *non_xm_print = 0;
 818         if (baud_changed)
 819                 *baud_changed = 0;
 820
 821         while (1) {
 822                 rc = kwboot_tty_recv(fd, c, 1, timeout);
 823                 if (rc) {
 824                         if (errno != ETIMEDOUT)
 825                                 return rc;
 826                         else if (allow_non_xm && *non_xm_print)
 827                                 return -1;
 828                         else
 829                                 *c = NAK;
 830                 }
 831
 832                 /* If received xmodem reply, end. */
 833                 if (_is_xm_reply(*c))
 834                         break;
 835
 836                 /*
 837                  * If receiving/printing non-xmodem text output is allowed and
 838                  * such a byte was received, we want to increase receiving time
 839                  * and either:
 840                  * - print the byte, if it is not part of baudrate change magic
 841                  *   sequence while baudrate change was requested (-B option)
 842                  * - change baudrate
 843                  * Otherwise decrease timeout by time elapsed.
 844                  */
 845                 if (allow_non_xm) {
 846                         recv_until = _now() + timeout;
 847
 848                         if (baudrate && !*baud_changed) {
 849                                 rc = kwboot_baud_magic_handle(fd, *c, baudrate);
 850                                 if (rc == 1)
 851                                         *baud_changed = 1;
 852                                 else if (!rc)
 853                                         *non_xm_print = 1;
 854                                 else
 855                                         return rc;
 856                         } else if (!baudrate || !*baud_changed) {
 857                                 putchar(*c);
 858                                 fflush(stdout);
 859                                 *non_xm_print = 1;
 860                         }
 861                 } else {
 862                         timeout = recv_until - _now();
 863                         if (timeout < 0) {
 864                                 errno = ETIMEDOUT;
 865                                 return -1;
 866                         }
 867                 }
 868         }
 869
 870         return 0;
 871 }
 872
 873 static int
 874 kwboot_xm_sendblock(int fd, struct kwboot_block *block, int allow_non_xm,
 875                     int *done_print, int baudrate)
 876 {
 877         int non_xm_print, baud_changed;
 878         int rc, err, retries;
 879         char c;
 880
 881         *done_print = 0;
 882
 883         retries = 16;
 884         do {
 885                 rc = kwboot_tty_send(fd, block, sizeof(*block));
 886                 if (rc)
 887                         return rc;
 888
 889                 if (allow_non_xm && !*done_print) {
 890                         kwboot_progress(100, '.');
 891                         kwboot_printv("Done\n");
 892                         *done_print = 1;
 893                 }
 894
 895                 rc = kwboot_xm_recv_reply(fd, &c, allow_non_xm, &non_xm_print,
 896                                           baudrate, &baud_changed);
 897                 if (rc)
 898                         goto can;
 899
 900                 if (!allow_non_xm && c != ACK)
 901                         kwboot_progress(-1, '+');
 902         } while (c == NAK && retries-- > 0);
 903
 904         if (non_xm_print)
 905                 kwboot_printv("\n");
 906
 907         if (allow_non_xm && baudrate && !baud_changed) {
 908                 fprintf(stderr, "Baudrate was not changed\n");
 909                 rc = -1;
 910                 errno = EPROTO;
 911                 goto can;
 912         }
 913
 914         return _xm_reply_to_error(c);
 915 can:
 916         err = errno;
 917         kwboot_tty_send_char(fd, CAN);
 918         kwboot_printv("\n");
 919         errno = err;
 920         return rc;
 921 }
 922
 923 static int
 924 kwboot_xm_finish(int fd)
 925 {
 926         int rc, retries;
 927         char c;
 928
 929         kwboot_printv("Finishing transfer\n");
 930
 931         retries = 16;
 932         do {
 933                 rc = kwboot_tty_send_char(fd, EOT);
 934                 if (rc)
 935                         return rc;
 936
 937                 rc = kwboot_xm_recv_reply(fd, &c, 0, NULL, 0, NULL);
 938                 if (rc)
 939                         return rc;
 940         } while (c == NAK && retries-- > 0);
 941
 942         return _xm_reply_to_error(c);
 943 }
 944
 945 static int
 946 kwboot_xmodem_one(int tty, int *pnum, int header, const uint8_t *data,
 947                   size_t size, int baudrate)
 948 {
 949         int done_print = 0;
 950         size_t sent, left;
 951         int rc;
 952
 953         kwboot_printv("Sending boot image %s (%zu bytes)...\n",
 954                       header ? "header" : "data", size);
 955
 956         left = size;
 957         sent = 0;
 958
 959         while (sent < size) {
 960                 struct kwboot_block block;
 961                 int last_block;
 962                 size_t blksz;
 963
 964                 blksz = kwboot_xm_makeblock(&block, data, left, (*pnum)++);
 965                 data += blksz;
 966
 967                 last_block = (left <= blksz);
 968
 969                 rc = kwboot_xm_sendblock(tty, &block, header && last_block,
 970                                          &done_print, baudrate);
 971                 if (rc)
 972                         goto out;
 973
 974                 sent += blksz;
 975                 left -= blksz;
 976
 977                 if (!done_print)
 978                         kwboot_progress(sent * 100 / size, '.');
 979         }
 980
 981         if (!done_print)
 982                 kwboot_printv("Done\n");
 983
 984         return 0;
 985 out:
 986         kwboot_printv("\n");
 987         return rc;
 988 }
 989
 990 static int
 991 kwboot_xmodem(int tty, const void *_img, size_t size, int baudrate)
 992 {
 993         const uint8_t *img = _img;
 994         int rc, pnum;
 995         size_t hdrsz;
 996
 997         hdrsz = kwbheader_size(img);
 998
 999         kwboot_printv("Waiting 2s and flushing tty\n");
1000         sleep(2); /* flush isn't effective without it */
1001         tcflush(tty, TCIOFLUSH);
1002
1003         pnum = 1;
1004
1005         rc = kwboot_xmodem_one(tty, &pnum, 1, img, hdrsz, baudrate);
1006         if (rc)
1007                 return rc;
1008
1009         img += hdrsz;
1010         size -= hdrsz;
1011
1012         rc = kwboot_xmodem_one(tty, &pnum, 0, img, size, 0);
1013         if (rc)
1014                 return rc;
1015
1016         rc = kwboot_xm_finish(tty);
1017         if (rc)
1018                 return rc;
1019
1020         if (baudrate) {
1021                 char buf[sizeof(kwb_baud_magic)];
1022
1023                 /* Wait 1s for baudrate change magic */
1024                 rc = kwboot_tty_recv(tty, buf, sizeof(buf), 1000);
1025                 if (rc)
1026                         return rc;
1027
1028                 if (memcmp(buf, kwb_baud_magic, sizeof(buf))) {
1029                         errno = EPROTO;
1030                         return -1;
1031                 }
1032
1033                 kwboot_printv("\nChanging baudrate back to 115200 Bd\n\n");
1034                 rc = kwboot_tty_change_baudrate(tty, 115200);
1035                 if (rc)
1036                         return rc;
1037         }
1038
1039         return 0;
1040 }
1041
1042 static int
1043 kwboot_term_pipe(int in, int out, const char *quit, int *s)
1044 {
1045         ssize_t nin;
1046         char _buf[128], *buf = _buf;
1047
1048         nin = read(in, buf, sizeof(_buf));
1049         if (nin <= 0)
1050                 return -1;
1051
1052         if (quit) {
1053                 int i;
1054
1055                 for (i = 0; i < nin; i++) {
1056                         if (*buf == quit[*s]) {
1057                                 (*s)++;
1058                                 if (!quit[*s])
1059                                         return 0;
1060                                 buf++;
1061                                 nin--;
1062                         } else {
1063                                 if (kwboot_write(out, quit, *s) < 0)
1064                                         return -1;
1065                                 *s = 0;
1066                         }
1067                 }
1068         }
1069
1070         if (kwboot_write(out, buf, nin) < 0)
1071                 return -1;
1072
1073         return 0;
1074 }
1075
1076 static int
1077 kwboot_terminal(int tty)
1078 {
1079         int rc, in, s;
1080         const char *quit = "\34c";
1081         struct termios otio, tio;
1082
1083         rc = -1;
1084
1085         in = STDIN_FILENO;
1086         if (isatty(in)) {
1087                 rc = tcgetattr(in, &otio);
1088                 if (!rc) {
1089                         tio = otio;
1090                         cfmakeraw(&tio);
1091                         rc = tcsetattr(in, TCSANOW, &tio);
1092                 }
1093                 if (rc) {
1094                         perror("tcsetattr");
1095                         goto out;
1096                 }
1097
1098                 kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
1099                               quit[0]|0100, quit[1]);
1100         } else
1101                 in = -1;
1102
1103         rc = 0;
1104         s = 0;
1105
1106         do {
1107                 fd_set rfds;
1108                 int nfds = 0;
1109
1110                 FD_SET(tty, &rfds);
1111                 nfds = nfds < tty ? tty : nfds;
1112
1113                 if (in >= 0) {
1114                         FD_SET(in, &rfds);
1115                         nfds = nfds < in ? in : nfds;
1116                 }
1117
1118                 nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
1119                 if (nfds < 0)
1120                         break;
1121
1122                 if (FD_ISSET(tty, &rfds)) {
1123                         rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
1124                         if (rc)
1125                                 break;
1126                 }
1127
1128                 if (in >= 0 && FD_ISSET(in, &rfds)) {
1129                         rc = kwboot_term_pipe(in, tty, quit, &s);
1130                         if (rc)
1131                                 break;
1132                 }
1133         } while (quit[s] != 0);
1134
1135         if (in >= 0)
1136                 tcsetattr(in, TCSANOW, &otio);
1137         printf("\n");
1138 out:
1139         return rc;
1140 }
1141
1142 static void *
1143 kwboot_read_image(const char *path, size_t *size, size_t reserve)
1144 {
1145         int rc, fd;
1146         struct stat st;
1147         void *img;
1148         off_t tot;
1149
1150         rc = -1;
1151         img = NULL;
1152
1153         fd = open(path, O_RDONLY);
1154         if (fd < 0)
1155                 goto out;
1156
1157         rc = fstat(fd, &st);
1158         if (rc)
1159                 goto out;
1160
1161         img = malloc(st.st_size + reserve);
1162         if (!img)
1163                 goto out;
1164
1165         tot = 0;
1166         while (tot < st.st_size) {
1167                 ssize_t rd = read(fd, img + tot, st.st_size - tot);
1168
1169                 if (rd < 0)
1170                         goto out;
1171
1172                 tot += rd;
1173
1174                 if (!rd && tot < st.st_size) {
1175                         errno = EIO;
1176                         goto out;
1177                 }
1178         }
1179
1180         rc = 0;
1181         *size = st.st_size;
1182 out:
1183         if (rc && img) {
1184                 free(img);
1185                 img = NULL;
1186         }
1187         if (fd >= 0)
1188                 close(fd);
1189
1190         return img;
1191 }
1192
1193 static uint8_t
1194 kwboot_hdr_csum8(const void *hdr)
1195 {
1196         const uint8_t *data = hdr;
1197         uint8_t csum;
1198         size_t size;
1199
1200         size = kwbheader_size_for_csum(hdr);
1201
1202         for (csum = 0; size-- > 0; data++)
1203                 csum += *data;
1204
1205         return csum;
1206 }
1207
1208 static int
1209 kwboot_img_is_secure(void *img)
1210 {
1211         struct opt_hdr_v1 *ohdr;
1212
1213         for_each_opt_hdr_v1 (ohdr, img)
1214                 if (ohdr->headertype == OPT_HDR_V1_SECURE_TYPE)
1215                         return 1;
1216
1217         return 0;
1218 }
1219
1220 static void *
1221 kwboot_img_grow_data_left(void *img, size_t *size, size_t grow)
1222 {
1223         uint32_t hdrsz, datasz, srcaddr;
1224         struct main_hdr_v1 *hdr = img;
1225         uint8_t *data;
1226
1227         srcaddr = le32_to_cpu(hdr->srcaddr);
1228
1229         hdrsz = kwbheader_size(hdr);
1230         data = (uint8_t *)img + srcaddr;
1231         datasz = *size - srcaddr;
1232
1233         /* only move data if there is not enough space */
1234         if (hdrsz + grow > srcaddr) {
1235                 size_t need = hdrsz + grow - srcaddr;
1236
1237                 /* move data by enough bytes */
1238                 memmove(data + need, data, datasz);
1239                 *size += need;
1240                 srcaddr += need;
1241         }
1242
1243         srcaddr -= grow;
1244         hdr->srcaddr = cpu_to_le32(srcaddr);
1245         hdr->destaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) - grow);
1246         hdr->blocksize = cpu_to_le32(le32_to_cpu(hdr->blocksize) + grow);
1247
1248         return (uint8_t *)img + srcaddr;
1249 }
1250
1251 static void
1252 kwboot_img_grow_hdr(void *img, size_t *size, size_t grow)
1253 {
1254         uint32_t hdrsz, datasz, srcaddr;
1255         struct main_hdr_v1 *hdr = img;
1256         uint8_t *data;
1257
1258         srcaddr = le32_to_cpu(hdr->srcaddr);
1259
1260         hdrsz = kwbheader_size(img);
1261         data = (uint8_t *)img + srcaddr;
1262         datasz = *size - srcaddr;
1263
1264         /* only move data if there is not enough space */
1265         if (hdrsz + grow > srcaddr) {
1266                 size_t need = hdrsz + grow - srcaddr;
1267
1268                 /* move data by enough bytes */
1269                 memmove(data + need, data, datasz);
1270
1271                 hdr->srcaddr = cpu_to_le32(srcaddr + need);
1272                 *size += need;
1273         }
1274
1275         if (kwbimage_version(img) == 1) {
1276                 hdrsz += grow;
1277                 hdr->headersz_msb = hdrsz >> 16;
1278                 hdr->headersz_lsb = cpu_to_le16(hdrsz & 0xffff);
1279         }
1280 }
1281
1282 static void *
1283 kwboot_add_bin_ohdr_v1(void *img, size_t *size, uint32_t binsz)
1284 {
1285         struct main_hdr_v1 *hdr = img;
1286         struct opt_hdr_v1 *ohdr;
1287         uint32_t ohdrsz;
1288
1289         ohdrsz = binsz + 8 + sizeof(*ohdr);
1290         kwboot_img_grow_hdr(img, size, ohdrsz);
1291
1292         if (hdr->ext & 0x1) {
1293                 for_each_opt_hdr_v1 (ohdr, img)
1294                         if (opt_hdr_v1_next(ohdr) == NULL)
1295                                 break;
1296
1297                 *opt_hdr_v1_ext(ohdr) |= 1;
1298                 ohdr = opt_hdr_v1_next(ohdr);
1299         } else {
1300                 hdr->ext |= 1;
1301                 ohdr = (void *)(hdr + 1);
1302         }
1303
1304         ohdr->headertype = OPT_HDR_V1_BINARY_TYPE;
1305         ohdr->headersz_msb = ohdrsz >> 16;
1306         ohdr->headersz_lsb = cpu_to_le16(ohdrsz & 0xffff);
1307
1308         memset(&ohdr->data[0], 0, ohdrsz - sizeof(*ohdr));
1309
1310         return &ohdr->data[4];
1311 }
1312
1313 static void
1314 _copy_baudrate_change_code(struct main_hdr_v1 *hdr, void *dst, int pre,
1315                            int old_baud, int new_baud)
1316 {
1317         size_t codesz = sizeof(kwboot_baud_code);
1318         uint8_t *code = dst;
1319
1320         if (pre) {
1321                 size_t presz = sizeof(kwboot_pre_baud_code);
1322
1323                 /*
1324                  * We need to prepend code that loads lr register with original
1325                  * value of hdr->execaddr. We do this by putting the original
1326                  * exec address before the code that loads it relatively from
1327                  * it's beginning.
1328                  * Afterwards we change the exec address to this code (which is
1329                  * at offset 4, because the first 4 bytes contain the original
1330                  * exec address).
1331                  */
1332                 memcpy(code, kwboot_pre_baud_code, presz);
1333                 *(uint32_t *)code = hdr->execaddr;
1334
1335                 hdr->execaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) + 4);
1336
1337                 code += presz;
1338         }
1339
1340         memcpy(code, kwboot_baud_code, codesz - 8);
1341         *(uint32_t *)(code + codesz - 8) = cpu_to_le32(old_baud);
1342         *(uint32_t *)(code + codesz - 4) = cpu_to_le32(new_baud);
1343 }
1344
1345 static int
1346 kwboot_img_patch(void *img, size_t *size, int baudrate)
1347 {
1348         int rc;
1349         struct main_hdr_v1 *hdr;
1350         uint32_t srcaddr;
1351         uint8_t csum;
1352         size_t hdrsz;
1353         int image_ver;
1354         int is_secure;
1355
1356         rc = -1;
1357         hdr = img;
1358
1359         if (*size < sizeof(struct main_hdr_v1)) {
1360                 errno = EINVAL;
1361                 goto out;
1362         }
1363
1364         image_ver = kwbimage_version(img);
1365         if (image_ver != 0 && image_ver != 1) {
1366                 fprintf(stderr, "Invalid image header version\n");
1367                 errno = EINVAL;
1368                 goto out;
1369         }
1370
1371         hdrsz = kwbheader_size(hdr);
1372
1373         if (*size < hdrsz) {
1374                 errno = EINVAL;
1375                 goto out;
1376         }
1377
1378         csum = kwboot_hdr_csum8(hdr) - hdr->checksum;
1379         if (csum != hdr->checksum) {
1380                 errno = EINVAL;
1381                 goto out;
1382         }
1383
1384         if (image_ver == 0) {
1385                 struct main_hdr_v0 *hdr_v0 = img;
1386
1387                 hdr_v0->nandeccmode = IBR_HDR_ECC_DISABLED;
1388                 hdr_v0->nandpagesize = 0;
1389         }
1390
1391         srcaddr = le32_to_cpu(hdr->srcaddr);
1392
1393         switch (hdr->blockid) {
1394         case IBR_HDR_SATA_ID:
1395                 if (srcaddr < 1) {
1396                         errno = EINVAL;
1397                         goto out;
1398                 }
1399                 hdr->srcaddr = cpu_to_le32((srcaddr - 1) * 512);
1400                 break;
1401
1402         case IBR_HDR_SDIO_ID:
1403                 hdr->srcaddr = cpu_to_le32(srcaddr * 512);
1404                 break;
1405
1406         case IBR_HDR_PEX_ID:
1407                 if (srcaddr == 0xFFFFFFFF)
1408                         hdr->srcaddr = cpu_to_le32(hdrsz);
1409                 break;
1410
1411         case IBR_HDR_SPI_ID:
1412                 if (hdr->destaddr == cpu_to_le32(0xFFFFFFFF)) {
1413                         kwboot_printv("Patching destination and execution addresses from SPI/NOR XIP area to DDR area 0x00800000\n");
1414                         hdr->destaddr = cpu_to_le32(0x00800000);
1415                         hdr->execaddr = cpu_to_le32(0x00800000);
1416                 }
1417                 break;
1418         }
1419
1420         if (hdrsz > le32_to_cpu(hdr->srcaddr) ||
1421             *size < le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize)) {
1422                 errno = EINVAL;
1423                 goto out;
1424         }
1425
1426         is_secure = kwboot_img_is_secure(img);
1427
1428         if (hdr->blockid != IBR_HDR_UART_ID) {
1429                 if (is_secure) {
1430                         fprintf(stderr,
1431                                 "Image has secure header with signature for non-UART booting\n");
1432                         errno = EINVAL;
1433                         goto out;
1434                 }
1435
1436                 kwboot_printv("Patching image boot signature to UART\n");
1437                 hdr->blockid = IBR_HDR_UART_ID;
1438         }
1439
1440         if (baudrate) {
1441                 uint32_t codesz = sizeof(kwboot_baud_code);
1442                 void *code;
1443
1444                 if (image_ver == 0) {
1445                         fprintf(stderr,
1446                                 "Cannot inject code for changing baudrate into v0 image header\n");
1447                         errno = EINVAL;
1448                         goto out;
1449                 }
1450
1451                 if (is_secure) {
1452                         fprintf(stderr,
1453                                 "Cannot inject code for changing baudrate into image with secure header\n");
1454                         errno = EINVAL;
1455                         goto out;
1456                 }
1457
1458                 /*
1459                  * First inject code that changes the baudrate from the default
1460                  * value of 115200 Bd to requested value. This code is inserted
1461                  * as a new opt hdr, so it is executed by BootROM after the
1462                  * header part is received.
1463                  */
1464                 kwboot_printv("Injecting binary header code for changing baudrate to %d Bd\n",
1465                               baudrate);
1466
1467                 code = kwboot_add_bin_ohdr_v1(img, size, codesz);
1468                 _copy_baudrate_change_code(hdr, code, 0, 115200, baudrate);
1469
1470                 /*
1471                  * Now inject code that changes the baudrate back to 115200 Bd.
1472                  * This code is prepended to the data part of the image, so it
1473                  * is executed before U-Boot proper.
1474                  */
1475                 kwboot_printv("Injecting code for changing baudrate back\n");
1476
1477                 codesz += sizeof(kwboot_pre_baud_code);
1478                 code = kwboot_img_grow_data_left(img, size, codesz);
1479                 _copy_baudrate_change_code(hdr, code, 1, baudrate, 115200);
1480
1481                 /* recompute header size */
1482                 hdrsz = kwbheader_size(hdr);
1483         }
1484
1485         if (hdrsz % KWBOOT_XM_BLKSZ) {
1486                 size_t offset = (KWBOOT_XM_BLKSZ - hdrsz % KWBOOT_XM_BLKSZ) %
1487                                 KWBOOT_XM_BLKSZ;
1488
1489                 if (is_secure) {
1490                         fprintf(stderr, "Cannot align image with secure header\n");
1491                         errno = EINVAL;
1492                         goto out;
1493                 }
1494
1495                 kwboot_printv("Aligning image header to Xmodem block size\n");
1496                 kwboot_img_grow_hdr(img, size, offset);
1497         }
1498
1499         hdr->checksum = kwboot_hdr_csum8(hdr) - csum;
1500
1501         *size = le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize);
1502         rc = 0;
1503 out:
1504         return rc;
1505 }
1506
1507 static void
1508 kwboot_usage(FILE *stream, char *progname)
1509 {
1510         fprintf(stream, "kwboot version %s\n", PLAIN_VERSION);
1511         fprintf(stream,
1512                 "Usage: %s [OPTIONS] [-b <image> | -D <image> ] [-B <baud> ] <TTY>\n",
1513                 progname);
1514         fprintf(stream, "\n");
1515         fprintf(stream,
1516                 "  -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
1517         fprintf(stream,
1518                 "  -D <image>: boot <image> without preamble (Dove)\n");
1519         fprintf(stream, "  -d: enter debug mode\n");
1520         fprintf(stream, "  -a: use timings for Armada XP\n");
1521         fprintf(stream, "  -q <req-delay>:  use specific request-delay\n");
1522         fprintf(stream, "  -s <resp-timeo>: use specific response-timeout\n");
1523         fprintf(stream,
1524                 "  -o <block-timeo>: use specific xmodem block timeout\n");
1525         fprintf(stream, "\n");
1526         fprintf(stream, "  -t: mini terminal\n");
1527         fprintf(stream, "\n");
1528         fprintf(stream, "  -B <baud>: set baud rate\n");
1529         fprintf(stream, "\n");
1530 }
1531
1532 int
1533 main(int argc, char **argv)
1534 {
1535         const char *ttypath, *imgpath;
1536         int rv, rc, tty, term;
1537         void *bootmsg;
1538         void *debugmsg;
1539         void *img;
1540         size_t size;
1541         size_t after_img_rsv;
1542         int baudrate;
1543
1544         rv = 1;
1545         tty = -1;
1546         bootmsg = NULL;
1547         debugmsg = NULL;
1548         imgpath = NULL;
1549         img = NULL;
1550         term = 0;
1551         size = 0;
1552         after_img_rsv = KWBOOT_XM_BLKSZ;
1553         baudrate = 115200;
1554
1555         kwboot_verbose = isatty(STDOUT_FILENO);
1556
1557         do {
1558                 int c = getopt(argc, argv, "hb:ptaB:dD:q:s:o:");
1559                 if (c < 0)
1560                         break;
1561
1562                 switch (c) {
1563                 case 'b':
1564                         bootmsg = kwboot_msg_boot;
1565                         imgpath = optarg;
1566                         break;
1567
1568                 case 'D':
1569                         bootmsg = NULL;
1570                         imgpath = optarg;
1571                         break;
1572
1573                 case 'd':
1574                         debugmsg = kwboot_msg_debug;
1575                         break;
1576
1577                 case 'p':
1578                         /* nop, for backward compatibility */
1579                         break;
1580
1581                 case 't':
1582                         term = 1;
1583                         break;
1584
1585                 case 'a':
1586                         msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
1587                         msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
1588                         break;
1589
1590                 case 'q':
1591                         msg_req_delay = atoi(optarg);
1592                         break;
1593
1594                 case 's':
1595                         msg_rsp_timeo = atoi(optarg);
1596                         break;
1597
1598                 case 'o':
1599                         blk_rsp_timeo = atoi(optarg);
1600                         break;
1601
1602                 case 'B':
1603                         baudrate = atoi(optarg);
1604                         break;
1605
1606                 case 'h':
1607                         rv = 0;
1608                 default:
1609                         goto usage;
1610                 }
1611         } while (1);
1612
1613         if (!bootmsg && !term && !debugmsg)
1614                 goto usage;
1615
1616         if (argc - optind < 1)
1617                 goto usage;
1618
1619         ttypath = argv[optind++];
1620
1621         tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate);
1622         if (tty < 0) {
1623                 perror(ttypath);
1624                 goto out;
1625         }
1626
1627         if (baudrate == 115200)
1628                 /* do not change baudrate during Xmodem to the same value */
1629                 baudrate = 0;
1630         else
1631                 /* ensure we have enough space for baudrate change code */
1632                 after_img_rsv += KWBOOT_BAUDRATE_BIN_HEADER_SZ +
1633                                  sizeof(kwboot_pre_baud_code) +
1634                                  sizeof(kwboot_baud_code);
1635
1636         if (imgpath) {
1637                 img = kwboot_read_image(imgpath, &size, after_img_rsv);
1638                 if (!img) {
1639                         perror(imgpath);
1640                         goto out;
1641                 }
1642
1643                 rc = kwboot_img_patch(img, &size, baudrate);
1644                 if (rc) {
1645                         fprintf(stderr, "%s: Invalid image.\n", imgpath);
1646                         goto out;
1647                 }
1648         }
1649
1650         if (debugmsg) {
1651                 rc = kwboot_debugmsg(tty, debugmsg);
1652                 if (rc) {
1653                         perror("debugmsg");
1654                         goto out;
1655                 }
1656         } else if (bootmsg) {
1657                 rc = kwboot_bootmsg(tty, bootmsg);
1658                 if (rc) {
1659                         perror("bootmsg");
1660                         goto out;
1661                 }
1662         }
1663
1664         if (img) {
1665                 rc = kwboot_xmodem(tty, img, size, baudrate);
1666                 if (rc) {
1667                         perror("xmodem");
1668                         goto out;
1669                 }
1670         }
1671
1672         if (term) {
1673                 rc = kwboot_terminal(tty);
1674                 if (rc && !(errno == EINTR)) {
1675                         perror("terminal");
1676                         goto out;
1677                 }
1678         }
1679
1680         rv = 0;
1681 out:
1682         if (tty >= 0)
1683                 close(tty);
1684
1685         if (img)
1686                 free(img);
1687
1688         return rv;
1689
1690 usage:
1691         kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
1692         goto out;
1693 }