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 _is_within_tolerance(int value, int reference, int tolerance)
 572 {
 573         return 100 * value >= reference * (100 - tolerance) &&
 574                100 * value <= reference * (100 + tolerance);
 575 }
 576
 577 static int
 578 kwboot_tty_change_baudrate(int fd, int baudrate)
 579 {
 580         struct termios tio;
 581         speed_t speed;
 582         int rc;
 583
 584         rc = tcgetattr(fd, &tio);
 585         if (rc)
 586                 return rc;
 587
 588         speed = kwboot_tty_baudrate_to_speed(baudrate);
 589         if (speed == B0) {
 590                 errno = EINVAL;
 591                 return -1;
 592         }
 593
 594 #ifdef BOTHER
 595         if (speed == BOTHER)
 596                 tio.c_ospeed = tio.c_ispeed = baudrate;
 597 #endif
 598
 599         rc = cfsetospeed(&tio, speed);
 600         if (rc)
 601                 return rc;
 602
 603         rc = cfsetispeed(&tio, speed);
 604         if (rc)
 605                 return rc;
 606
 607         rc = tcsetattr(fd, TCSANOW, &tio);
 608         if (rc)
 609                 return rc;
 610
 611         rc = tcgetattr(fd, &tio);
 612         if (rc)
 613                 return rc;
 614
 615         if (cfgetospeed(&tio) != speed || cfgetispeed(&tio) != speed)
 616                 goto baud_fail;
 617
 618 #ifdef BOTHER
 619         /*
 620          * Check whether set baudrate is within 3% tolerance.
 621          * If BOTHER is defined, Linux always fills out c_ospeed / c_ispeed
 622          * with real values.
 623          */
 624         if (!_is_within_tolerance(tio.c_ospeed, baudrate, 3))
 625                 goto baud_fail;
 626
 627         if (!_is_within_tolerance(tio.c_ispeed, baudrate, 3))
 628                 goto baud_fail;
 629 #endif
 630
 631         return 0;
 632
 633 baud_fail:
 634         fprintf(stderr, "Could not set baudrate to requested value\n");
 635         errno = EINVAL;
 636         return -1;
 637 }
 638
 639 static int
 640 kwboot_open_tty(const char *path, int baudrate)
 641 {
 642         int rc, fd;
 643         struct termios tio;
 644
 645         rc = -1;
 646
 647         fd = open(path, O_RDWR|O_NOCTTY|O_NDELAY);
 648         if (fd < 0)
 649                 goto out;
 650
 651         memset(&tio, 0, sizeof(tio));
 652
 653         tio.c_iflag = 0;
 654         tio.c_cflag = CREAD|CLOCAL|CS8;
 655
 656         tio.c_cc[VMIN] = 1;
 657         tio.c_cc[VTIME] = 10;
 658
 659         rc = tcsetattr(fd, TCSANOW, &tio);
 660         if (rc)
 661                 goto out;
 662
 663         rc = kwboot_tty_change_baudrate(fd, baudrate);
 664         if (rc)
 665                 goto out;
 666
 667         rc = fd;
 668 out:
 669         if (rc < 0) {
 670                 if (fd >= 0)
 671                         close(fd);
 672         }
 673
 674         return rc;
 675 }
 676
 677 static int
 678 kwboot_bootmsg(int tty, void *msg)
 679 {
 680         int rc;
 681         char c;
 682         int count;
 683
 684         if (msg == NULL)
 685                 kwboot_printv("Please reboot the target into UART boot mode...");
 686         else
 687                 kwboot_printv("Sending boot message. Please reboot the target...");
 688
 689         do {
 690                 rc = tcflush(tty, TCIOFLUSH);
 691                 if (rc)
 692                         break;
 693
 694                 for (count = 0; count < 128; count++) {
 695                         rc = kwboot_tty_send(tty, msg, 8);
 696                         if (rc) {
 697                                 usleep(msg_req_delay * 1000);
 698                                 continue;
 699                         }
 700                 }
 701
 702                 rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
 703
 704                 kwboot_spinner();
 705
 706         } while (rc || c != NAK);
 707
 708         kwboot_printv("\n");
 709
 710         return rc;
 711 }
 712
 713 static int
 714 kwboot_debugmsg(int tty, void *msg)
 715 {
 716         int rc;
 717
 718         kwboot_printv("Sending debug message. Please reboot the target...");
 719
 720         do {
 721                 char buf[16];
 722
 723                 rc = tcflush(tty, TCIOFLUSH);
 724                 if (rc)
 725                         break;
 726
 727                 rc = kwboot_tty_send(tty, msg, 8);
 728                 if (rc) {
 729                         usleep(msg_req_delay * 1000);
 730                         continue;
 731                 }
 732
 733                 rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);
 734
 735                 kwboot_spinner();
 736
 737         } while (rc);
 738
 739         kwboot_printv("\n");
 740
 741         return rc;
 742 }
 743
 744 static size_t
 745 kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
 746                     size_t size, int pnum)
 747 {
 748         size_t i, n;
 749
 750         block->soh = SOH;
 751         block->pnum = pnum;
 752         block->_pnum = ~block->pnum;
 753
 754         n = size < KWBOOT_XM_BLKSZ ? size : KWBOOT_XM_BLKSZ;
 755         memcpy(&block->data[0], data, n);
 756         memset(&block->data[n], 0, KWBOOT_XM_BLKSZ - n);
 757
 758         block->csum = 0;
 759         for (i = 0; i < n; i++)
 760                 block->csum += block->data[i];
 761
 762         return n;
 763 }
 764
 765 static uint64_t
 766 _now(void)
 767 {
 768         struct timespec ts;
 769
 770         if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
 771                 static int err_print;
 772
 773                 if (!err_print) {
 774                         perror("clock_gettime() does not work");
 775                         err_print = 1;
 776                 }
 777
 778                 /* this will just make the timeout not work */
 779                 return -1ULL;
 780         }
 781
 782         return ts.tv_sec * 1000ULL + (ts.tv_nsec + 500000) / 1000000;
 783 }
 784
 785 static int
 786 _is_xm_reply(char c)
 787 {
 788         return c == ACK || c == NAK || c == CAN;
 789 }
 790
 791 static int
 792 _xm_reply_to_error(int c)
 793 {
 794         int rc = -1;
 795
 796         switch (c) {
 797         case ACK:
 798                 rc = 0;
 799                 break;
 800         case NAK:
 801                 errno = EBADMSG;
 802                 break;
 803         case CAN:
 804                 errno = ECANCELED;
 805                 break;
 806         default:
 807                 errno = EPROTO;
 808                 break;
 809         }
 810
 811         return rc;
 812 }
 813
 814 static int
 815 kwboot_baud_magic_handle(int fd, char c, int baudrate)
 816 {
 817         static size_t rcv_len;
 818
 819         if (rcv_len < sizeof(kwb_baud_magic)) {
 820                 /* try to recognize whole magic word */
 821                 if (c == kwb_baud_magic[rcv_len]) {
 822                         rcv_len++;
 823                 } else {
 824                         printf("%.*s%c", (int)rcv_len, kwb_baud_magic, c);
 825                         fflush(stdout);
 826                         rcv_len = 0;
 827                 }
 828         }
 829
 830         if (rcv_len == sizeof(kwb_baud_magic)) {
 831                 /* magic word received */
 832                 kwboot_printv("\nChanging baudrate to %d Bd\n", baudrate);
 833
 834                 return kwboot_tty_change_baudrate(fd, baudrate) ? : 1;
 835         } else {
 836                 return 0;
 837         }
 838 }
 839
 840 static int
 841 kwboot_xm_recv_reply(int fd, char *c, int allow_non_xm, int *non_xm_print,
 842                      int baudrate, int *baud_changed)
 843 {
 844         int timeout = allow_non_xm ? KWBOOT_HDR_RSP_TIMEO : blk_rsp_timeo;
 845         uint64_t recv_until = _now() + timeout;
 846         int rc;
 847
 848         if (non_xm_print)
 849                 *non_xm_print = 0;
 850         if (baud_changed)
 851                 *baud_changed = 0;
 852
 853         while (1) {
 854                 rc = kwboot_tty_recv(fd, c, 1, timeout);
 855                 if (rc) {
 856                         if (errno != ETIMEDOUT)
 857                                 return rc;
 858                         else if (allow_non_xm && *non_xm_print)
 859                                 return -1;
 860                         else
 861                                 *c = NAK;
 862                 }
 863
 864                 /* If received xmodem reply, end. */
 865                 if (_is_xm_reply(*c))
 866                         break;
 867
 868                 /*
 869                  * If receiving/printing non-xmodem text output is allowed and
 870                  * such a byte was received, we want to increase receiving time
 871                  * and either:
 872                  * - print the byte, if it is not part of baudrate change magic
 873                  *   sequence while baudrate change was requested (-B option)
 874                  * - change baudrate
 875                  * Otherwise decrease timeout by time elapsed.
 876                  */
 877                 if (allow_non_xm) {
 878                         recv_until = _now() + timeout;
 879
 880                         if (baudrate && !*baud_changed) {
 881                                 rc = kwboot_baud_magic_handle(fd, *c, baudrate);
 882                                 if (rc == 1)
 883                                         *baud_changed = 1;
 884                                 else if (!rc)
 885                                         *non_xm_print = 1;
 886                                 else
 887                                         return rc;
 888                         } else if (!baudrate || !*baud_changed) {
 889                                 putchar(*c);
 890                                 fflush(stdout);
 891                                 *non_xm_print = 1;
 892                         }
 893                 } else {
 894                         timeout = recv_until - _now();
 895                         if (timeout < 0) {
 896                                 errno = ETIMEDOUT;
 897                                 return -1;
 898                         }
 899                 }
 900         }
 901
 902         return 0;
 903 }
 904
 905 static int
 906 kwboot_xm_sendblock(int fd, struct kwboot_block *block, int allow_non_xm,
 907                     int *done_print, int baudrate)
 908 {
 909         int non_xm_print, baud_changed;
 910         int rc, err, retries;
 911         char c;
 912
 913         *done_print = 0;
 914
 915         retries = 16;
 916         do {
 917                 rc = kwboot_tty_send(fd, block, sizeof(*block));
 918                 if (rc)
 919                         return rc;
 920
 921                 if (allow_non_xm && !*done_print) {
 922                         kwboot_progress(100, '.');
 923                         kwboot_printv("Done\n");
 924                         *done_print = 1;
 925                 }
 926
 927                 rc = kwboot_xm_recv_reply(fd, &c, allow_non_xm, &non_xm_print,
 928                                           baudrate, &baud_changed);
 929                 if (rc)
 930                         goto can;
 931
 932                 if (!allow_non_xm && c != ACK)
 933                         kwboot_progress(-1, '+');
 934         } while (c == NAK && retries-- > 0);
 935
 936         if (non_xm_print)
 937                 kwboot_printv("\n");
 938
 939         if (allow_non_xm && baudrate && !baud_changed) {
 940                 fprintf(stderr, "Baudrate was not changed\n");
 941                 rc = -1;
 942                 errno = EPROTO;
 943                 goto can;
 944         }
 945
 946         return _xm_reply_to_error(c);
 947 can:
 948         err = errno;
 949         kwboot_tty_send_char(fd, CAN);
 950         kwboot_printv("\n");
 951         errno = err;
 952         return rc;
 953 }
 954
 955 static int
 956 kwboot_xm_finish(int fd)
 957 {
 958         int rc, retries;
 959         char c;
 960
 961         kwboot_printv("Finishing transfer\n");
 962
 963         retries = 16;
 964         do {
 965                 rc = kwboot_tty_send_char(fd, EOT);
 966                 if (rc)
 967                         return rc;
 968
 969                 rc = kwboot_xm_recv_reply(fd, &c, 0, NULL, 0, NULL);
 970                 if (rc)
 971                         return rc;
 972         } while (c == NAK && retries-- > 0);
 973
 974         return _xm_reply_to_error(c);
 975 }
 976
 977 static int
 978 kwboot_xmodem_one(int tty, int *pnum, int header, const uint8_t *data,
 979                   size_t size, int baudrate)
 980 {
 981         int done_print = 0;
 982         size_t sent, left;
 983         int rc;
 984
 985         kwboot_printv("Sending boot image %s (%zu bytes)...\n",
 986                       header ? "header" : "data", size);
 987
 988         left = size;
 989         sent = 0;
 990
 991         while (sent < size) {
 992                 struct kwboot_block block;
 993                 int last_block;
 994                 size_t blksz;
 995
 996                 blksz = kwboot_xm_makeblock(&block, data, left, (*pnum)++);
 997                 data += blksz;
 998
 999                 last_block = (left <= blksz);
1000
1001                 rc = kwboot_xm_sendblock(tty, &block, header && last_block,
1002                                          &done_print, baudrate);
1003                 if (rc)
1004                         goto out;
1005
1006                 sent += blksz;
1007                 left -= blksz;
1008
1009                 if (!done_print)
1010                         kwboot_progress(sent * 100 / size, '.');
1011         }
1012
1013         if (!done_print)
1014                 kwboot_printv("Done\n");
1015
1016         return 0;
1017 out:
1018         kwboot_printv("\n");
1019         return rc;
1020 }
1021
1022 static int
1023 kwboot_xmodem(int tty, const void *_img, size_t size, int baudrate)
1024 {
1025         const uint8_t *img = _img;
1026         int rc, pnum;
1027         size_t hdrsz;
1028
1029         hdrsz = kwbheader_size(img);
1030
1031         kwboot_printv("Waiting 2s and flushing tty\n");
1032         sleep(2); /* flush isn't effective without it */
1033         tcflush(tty, TCIOFLUSH);
1034
1035         pnum = 1;
1036
1037         rc = kwboot_xmodem_one(tty, &pnum, 1, img, hdrsz, baudrate);
1038         if (rc)
1039                 return rc;
1040
1041         img += hdrsz;
1042         size -= hdrsz;
1043
1044         rc = kwboot_xmodem_one(tty, &pnum, 0, img, size, 0);
1045         if (rc)
1046                 return rc;
1047
1048         rc = kwboot_xm_finish(tty);
1049         if (rc)
1050                 return rc;
1051
1052         if (baudrate) {
1053                 char buf[sizeof(kwb_baud_magic)];
1054
1055                 /* Wait 1s for baudrate change magic */
1056                 rc = kwboot_tty_recv(tty, buf, sizeof(buf), 1000);
1057                 if (rc)
1058                         return rc;
1059
1060                 if (memcmp(buf, kwb_baud_magic, sizeof(buf))) {
1061                         errno = EPROTO;
1062                         return -1;
1063                 }
1064
1065                 kwboot_printv("\nChanging baudrate back to 115200 Bd\n\n");
1066                 rc = kwboot_tty_change_baudrate(tty, 115200);
1067                 if (rc)
1068                         return rc;
1069         }
1070
1071         return 0;
1072 }
1073
1074 static int
1075 kwboot_term_pipe(int in, int out, const char *quit, int *s)
1076 {
1077         ssize_t nin;
1078         char _buf[128], *buf = _buf;
1079
1080         nin = read(in, buf, sizeof(_buf));
1081         if (nin <= 0)
1082                 return -1;
1083
1084         if (quit) {
1085                 int i;
1086
1087                 for (i = 0; i < nin; i++) {
1088                         if (*buf == quit[*s]) {
1089                                 (*s)++;
1090                                 if (!quit[*s])
1091                                         return 0;
1092                                 buf++;
1093                                 nin--;
1094                         } else {
1095                                 if (kwboot_write(out, quit, *s) < 0)
1096                                         return -1;
1097                                 *s = 0;
1098                         }
1099                 }
1100         }
1101
1102         if (kwboot_write(out, buf, nin) < 0)
1103                 return -1;
1104
1105         return 0;
1106 }
1107
1108 static int
1109 kwboot_terminal(int tty)
1110 {
1111         int rc, in, s;
1112         const char *quit = "\34c";
1113         struct termios otio, tio;
1114
1115         rc = -1;
1116
1117         in = STDIN_FILENO;
1118         if (isatty(in)) {
1119                 rc = tcgetattr(in, &otio);
1120                 if (!rc) {
1121                         tio = otio;
1122                         cfmakeraw(&tio);
1123                         rc = tcsetattr(in, TCSANOW, &tio);
1124                 }
1125                 if (rc) {
1126                         perror("tcsetattr");
1127                         goto out;
1128                 }
1129
1130                 kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
1131                               quit[0]|0100, quit[1]);
1132         } else
1133                 in = -1;
1134
1135         rc = 0;
1136         s = 0;
1137
1138         do {
1139                 fd_set rfds;
1140                 int nfds = 0;
1141
1142                 FD_SET(tty, &rfds);
1143                 nfds = nfds < tty ? tty : nfds;
1144
1145                 if (in >= 0) {
1146                         FD_SET(in, &rfds);
1147                         nfds = nfds < in ? in : nfds;
1148                 }
1149
1150                 nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
1151                 if (nfds < 0)
1152                         break;
1153
1154                 if (FD_ISSET(tty, &rfds)) {
1155                         rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
1156                         if (rc)
1157                                 break;
1158                 }
1159
1160                 if (in >= 0 && FD_ISSET(in, &rfds)) {
1161                         rc = kwboot_term_pipe(in, tty, quit, &s);
1162                         if (rc)
1163                                 break;
1164                 }
1165         } while (quit[s] != 0);
1166
1167         if (in >= 0)
1168                 tcsetattr(in, TCSANOW, &otio);
1169         printf("\n");
1170 out:
1171         return rc;
1172 }
1173
1174 static void *
1175 kwboot_read_image(const char *path, size_t *size, size_t reserve)
1176 {
1177         int rc, fd;
1178         struct stat st;
1179         void *img;
1180         off_t tot;
1181
1182         rc = -1;
1183         img = NULL;
1184
1185         fd = open(path, O_RDONLY);
1186         if (fd < 0)
1187                 goto out;
1188
1189         rc = fstat(fd, &st);
1190         if (rc)
1191                 goto out;
1192
1193         img = malloc(st.st_size + reserve);
1194         if (!img)
1195                 goto out;
1196
1197         tot = 0;
1198         while (tot < st.st_size) {
1199                 ssize_t rd = read(fd, img + tot, st.st_size - tot);
1200
1201                 if (rd < 0)
1202                         goto out;
1203
1204                 tot += rd;
1205
1206                 if (!rd && tot < st.st_size) {
1207                         errno = EIO;
1208                         goto out;
1209                 }
1210         }
1211
1212         rc = 0;
1213         *size = st.st_size;
1214 out:
1215         if (rc && img) {
1216                 free(img);
1217                 img = NULL;
1218         }
1219         if (fd >= 0)
1220                 close(fd);
1221
1222         return img;
1223 }
1224
1225 static uint8_t
1226 kwboot_hdr_csum8(const void *hdr)
1227 {
1228         const uint8_t *data = hdr;
1229         uint8_t csum;
1230         size_t size;
1231
1232         size = kwbheader_size_for_csum(hdr);
1233
1234         for (csum = 0; size-- > 0; data++)
1235                 csum += *data;
1236
1237         return csum;
1238 }
1239
1240 static int
1241 kwboot_img_is_secure(void *img)
1242 {
1243         struct opt_hdr_v1 *ohdr;
1244
1245         for_each_opt_hdr_v1 (ohdr, img)
1246                 if (ohdr->headertype == OPT_HDR_V1_SECURE_TYPE)
1247                         return 1;
1248
1249         return 0;
1250 }
1251
1252 static void *
1253 kwboot_img_grow_data_left(void *img, size_t *size, size_t grow)
1254 {
1255         uint32_t hdrsz, datasz, srcaddr;
1256         struct main_hdr_v1 *hdr = img;
1257         uint8_t *data;
1258
1259         srcaddr = le32_to_cpu(hdr->srcaddr);
1260
1261         hdrsz = kwbheader_size(hdr);
1262         data = (uint8_t *)img + srcaddr;
1263         datasz = *size - srcaddr;
1264
1265         /* only move data if there is not enough space */
1266         if (hdrsz + grow > srcaddr) {
1267                 size_t need = hdrsz + grow - srcaddr;
1268
1269                 /* move data by enough bytes */
1270                 memmove(data + need, data, datasz);
1271                 *size += need;
1272                 srcaddr += need;
1273         }
1274
1275         srcaddr -= grow;
1276         hdr->srcaddr = cpu_to_le32(srcaddr);
1277         hdr->destaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) - grow);
1278         hdr->blocksize = cpu_to_le32(le32_to_cpu(hdr->blocksize) + grow);
1279
1280         return (uint8_t *)img + srcaddr;
1281 }
1282
1283 static void
1284 kwboot_img_grow_hdr(void *img, size_t *size, size_t grow)
1285 {
1286         uint32_t hdrsz, datasz, srcaddr;
1287         struct main_hdr_v1 *hdr = img;
1288         uint8_t *data;
1289
1290         srcaddr = le32_to_cpu(hdr->srcaddr);
1291
1292         hdrsz = kwbheader_size(img);
1293         data = (uint8_t *)img + srcaddr;
1294         datasz = *size - srcaddr;
1295
1296         /* only move data if there is not enough space */
1297         if (hdrsz + grow > srcaddr) {
1298                 size_t need = hdrsz + grow - srcaddr;
1299
1300                 /* move data by enough bytes */
1301                 memmove(data + need, data, datasz);
1302
1303                 hdr->srcaddr = cpu_to_le32(srcaddr + need);
1304                 *size += need;
1305         }
1306
1307         if (kwbimage_version(img) == 1) {
1308                 hdrsz += grow;
1309                 hdr->headersz_msb = hdrsz >> 16;
1310                 hdr->headersz_lsb = cpu_to_le16(hdrsz & 0xffff);
1311         }
1312 }
1313
1314 static void *
1315 kwboot_add_bin_ohdr_v1(void *img, size_t *size, uint32_t binsz)
1316 {
1317         struct main_hdr_v1 *hdr = img;
1318         struct opt_hdr_v1 *ohdr;
1319         uint32_t ohdrsz;
1320
1321         ohdrsz = binsz + 8 + sizeof(*ohdr);
1322         kwboot_img_grow_hdr(img, size, ohdrsz);
1323
1324         if (hdr->ext & 0x1) {
1325                 for_each_opt_hdr_v1 (ohdr, img)
1326                         if (opt_hdr_v1_next(ohdr) == NULL)
1327                                 break;
1328
1329                 *opt_hdr_v1_ext(ohdr) |= 1;
1330                 ohdr = opt_hdr_v1_next(ohdr);
1331         } else {
1332                 hdr->ext |= 1;
1333                 ohdr = (void *)(hdr + 1);
1334         }
1335
1336         ohdr->headertype = OPT_HDR_V1_BINARY_TYPE;
1337         ohdr->headersz_msb = ohdrsz >> 16;
1338         ohdr->headersz_lsb = cpu_to_le16(ohdrsz & 0xffff);
1339
1340         memset(&ohdr->data[0], 0, ohdrsz - sizeof(*ohdr));
1341
1342         return &ohdr->data[4];
1343 }
1344
1345 static void
1346 _copy_baudrate_change_code(struct main_hdr_v1 *hdr, void *dst, int pre,
1347                            int old_baud, int new_baud)
1348 {
1349         size_t codesz = sizeof(kwboot_baud_code);
1350         uint8_t *code = dst;
1351
1352         if (pre) {
1353                 size_t presz = sizeof(kwboot_pre_baud_code);
1354
1355                 /*
1356                  * We need to prepend code that loads lr register with original
1357                  * value of hdr->execaddr. We do this by putting the original
1358                  * exec address before the code that loads it relatively from
1359                  * it's beginning.
1360                  * Afterwards we change the exec address to this code (which is
1361                  * at offset 4, because the first 4 bytes contain the original
1362                  * exec address).
1363                  */
1364                 memcpy(code, kwboot_pre_baud_code, presz);
1365                 *(uint32_t *)code = hdr->execaddr;
1366
1367                 hdr->execaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) + 4);
1368
1369                 code += presz;
1370         }
1371
1372         memcpy(code, kwboot_baud_code, codesz - 8);
1373         *(uint32_t *)(code + codesz - 8) = cpu_to_le32(old_baud);
1374         *(uint32_t *)(code + codesz - 4) = cpu_to_le32(new_baud);
1375 }
1376
1377 static int
1378 kwboot_img_patch(void *img, size_t *size, int baudrate)
1379 {
1380         int rc;
1381         struct main_hdr_v1 *hdr;
1382         uint32_t srcaddr;
1383         uint8_t csum;
1384         size_t hdrsz;
1385         int image_ver;
1386         int is_secure;
1387
1388         rc = -1;
1389         hdr = img;
1390
1391         if (*size < sizeof(struct main_hdr_v1)) {
1392                 errno = EINVAL;
1393                 goto out;
1394         }
1395
1396         image_ver = kwbimage_version(img);
1397         if (image_ver != 0 && image_ver != 1) {
1398                 fprintf(stderr, "Invalid image header version\n");
1399                 errno = EINVAL;
1400                 goto out;
1401         }
1402
1403         hdrsz = kwbheader_size(hdr);
1404
1405         if (*size < hdrsz) {
1406                 errno = EINVAL;
1407                 goto out;
1408         }
1409
1410         csum = kwboot_hdr_csum8(hdr) - hdr->checksum;
1411         if (csum != hdr->checksum) {
1412                 errno = EINVAL;
1413                 goto out;
1414         }
1415
1416         if (image_ver == 0) {
1417                 struct main_hdr_v0 *hdr_v0 = img;
1418
1419                 hdr_v0->nandeccmode = IBR_HDR_ECC_DISABLED;
1420                 hdr_v0->nandpagesize = 0;
1421         }
1422
1423         srcaddr = le32_to_cpu(hdr->srcaddr);
1424
1425         switch (hdr->blockid) {
1426         case IBR_HDR_SATA_ID:
1427                 if (srcaddr < 1) {
1428                         errno = EINVAL;
1429                         goto out;
1430                 }
1431                 hdr->srcaddr = cpu_to_le32((srcaddr - 1) * 512);
1432                 break;
1433
1434         case IBR_HDR_SDIO_ID:
1435                 hdr->srcaddr = cpu_to_le32(srcaddr * 512);
1436                 break;
1437
1438         case IBR_HDR_PEX_ID:
1439                 if (srcaddr == 0xFFFFFFFF)
1440                         hdr->srcaddr = cpu_to_le32(hdrsz);
1441                 break;
1442
1443         case IBR_HDR_SPI_ID:
1444                 if (hdr->destaddr == cpu_to_le32(0xFFFFFFFF)) {
1445                         kwboot_printv("Patching destination and execution addresses from SPI/NOR XIP area to DDR area 0x00800000\n");
1446                         hdr->destaddr = cpu_to_le32(0x00800000);
1447                         hdr->execaddr = cpu_to_le32(0x00800000);
1448                 }
1449                 break;
1450         }
1451
1452         if (hdrsz > le32_to_cpu(hdr->srcaddr) ||
1453             *size < le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize)) {
1454                 errno = EINVAL;
1455                 goto out;
1456         }
1457
1458         is_secure = kwboot_img_is_secure(img);
1459
1460         if (hdr->blockid != IBR_HDR_UART_ID) {
1461                 if (is_secure) {
1462                         fprintf(stderr,
1463                                 "Image has secure header with signature for non-UART booting\n");
1464                         errno = EINVAL;
1465                         goto out;
1466                 }
1467
1468                 kwboot_printv("Patching image boot signature to UART\n");
1469                 hdr->blockid = IBR_HDR_UART_ID;
1470         }
1471
1472         if (baudrate) {
1473                 uint32_t codesz = sizeof(kwboot_baud_code);
1474                 void *code;
1475
1476                 if (image_ver == 0) {
1477                         fprintf(stderr,
1478                                 "Cannot inject code for changing baudrate into v0 image header\n");
1479                         errno = EINVAL;
1480                         goto out;
1481                 }
1482
1483                 if (is_secure) {
1484                         fprintf(stderr,
1485                                 "Cannot inject code for changing baudrate into image with secure header\n");
1486                         errno = EINVAL;
1487                         goto out;
1488                 }
1489
1490                 /*
1491                  * First inject code that changes the baudrate from the default
1492                  * value of 115200 Bd to requested value. This code is inserted
1493                  * as a new opt hdr, so it is executed by BootROM after the
1494                  * header part is received.
1495                  */
1496                 kwboot_printv("Injecting binary header code for changing baudrate to %d Bd\n",
1497                               baudrate);
1498
1499                 code = kwboot_add_bin_ohdr_v1(img, size, codesz);
1500                 _copy_baudrate_change_code(hdr, code, 0, 115200, baudrate);
1501
1502                 /*
1503                  * Now inject code that changes the baudrate back to 115200 Bd.
1504                  * This code is prepended to the data part of the image, so it
1505                  * is executed before U-Boot proper.
1506                  */
1507                 kwboot_printv("Injecting code for changing baudrate back\n");
1508
1509                 codesz += sizeof(kwboot_pre_baud_code);
1510                 code = kwboot_img_grow_data_left(img, size, codesz);
1511                 _copy_baudrate_change_code(hdr, code, 1, baudrate, 115200);
1512
1513                 /* recompute header size */
1514                 hdrsz = kwbheader_size(hdr);
1515         }
1516
1517         if (hdrsz % KWBOOT_XM_BLKSZ) {
1518                 size_t offset = (KWBOOT_XM_BLKSZ - hdrsz % KWBOOT_XM_BLKSZ) %
1519                                 KWBOOT_XM_BLKSZ;
1520
1521                 if (is_secure) {
1522                         fprintf(stderr, "Cannot align image with secure header\n");
1523                         errno = EINVAL;
1524                         goto out;
1525                 }
1526
1527                 kwboot_printv("Aligning image header to Xmodem block size\n");
1528                 kwboot_img_grow_hdr(img, size, offset);
1529         }
1530
1531         hdr->checksum = kwboot_hdr_csum8(hdr) - csum;
1532
1533         *size = le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize);
1534         rc = 0;
1535 out:
1536         return rc;
1537 }
1538
1539 static void
1540 kwboot_usage(FILE *stream, char *progname)
1541 {
1542         fprintf(stream, "kwboot version %s\n", PLAIN_VERSION);
1543         fprintf(stream,
1544                 "Usage: %s [OPTIONS] [-b <image> | -D <image> ] [-B <baud> ] <TTY>\n",
1545                 progname);
1546         fprintf(stream, "\n");
1547         fprintf(stream,
1548                 "  -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
1549         fprintf(stream,
1550                 "  -D <image>: boot <image> without preamble (Dove)\n");
1551         fprintf(stream, "  -d: enter debug mode\n");
1552         fprintf(stream, "  -a: use timings for Armada XP\n");
1553         fprintf(stream, "  -q <req-delay>:  use specific request-delay\n");
1554         fprintf(stream, "  -s <resp-timeo>: use specific response-timeout\n");
1555         fprintf(stream,
1556                 "  -o <block-timeo>: use specific xmodem block timeout\n");
1557         fprintf(stream, "\n");
1558         fprintf(stream, "  -t: mini terminal\n");
1559         fprintf(stream, "\n");
1560         fprintf(stream, "  -B <baud>: set baud rate\n");
1561         fprintf(stream, "\n");
1562 }
1563
1564 int
1565 main(int argc, char **argv)
1566 {
1567         const char *ttypath, *imgpath;
1568         int rv, rc, tty, term;
1569         void *bootmsg;
1570         void *debugmsg;
1571         void *img;
1572         size_t size;
1573         size_t after_img_rsv;
1574         int baudrate;
1575
1576         rv = 1;
1577         tty = -1;
1578         bootmsg = NULL;
1579         debugmsg = NULL;
1580         imgpath = NULL;
1581         img = NULL;
1582         term = 0;
1583         size = 0;
1584         after_img_rsv = KWBOOT_XM_BLKSZ;
1585         baudrate = 115200;
1586
1587         kwboot_verbose = isatty(STDOUT_FILENO);
1588
1589         do {
1590                 int c = getopt(argc, argv, "hb:ptaB:dD:q:s:o:");
1591                 if (c < 0)
1592                         break;
1593
1594                 switch (c) {
1595                 case 'b':
1596                         bootmsg = kwboot_msg_boot;
1597                         imgpath = optarg;
1598                         break;
1599
1600                 case 'D':
1601                         bootmsg = NULL;
1602                         imgpath = optarg;
1603                         break;
1604
1605                 case 'd':
1606                         debugmsg = kwboot_msg_debug;
1607                         break;
1608
1609                 case 'p':
1610                         /* nop, for backward compatibility */
1611                         break;
1612
1613                 case 't':
1614                         term = 1;
1615                         break;
1616
1617                 case 'a':
1618                         msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
1619                         msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
1620                         break;
1621
1622                 case 'q':
1623                         msg_req_delay = atoi(optarg);
1624                         break;
1625
1626                 case 's':
1627                         msg_rsp_timeo = atoi(optarg);
1628                         break;
1629
1630                 case 'o':
1631                         blk_rsp_timeo = atoi(optarg);
1632                         break;
1633
1634                 case 'B':
1635                         baudrate = atoi(optarg);
1636                         break;
1637
1638                 case 'h':
1639                         rv = 0;
1640                 default:
1641                         goto usage;
1642                 }
1643         } while (1);
1644
1645         if (!bootmsg && !term && !debugmsg)
1646                 goto usage;
1647
1648         if (argc - optind < 1)
1649                 goto usage;
1650
1651         ttypath = argv[optind++];
1652
1653         tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate);
1654         if (tty < 0) {
1655                 perror(ttypath);
1656                 goto out;
1657         }
1658
1659         if (baudrate == 115200)
1660                 /* do not change baudrate during Xmodem to the same value */
1661                 baudrate = 0;
1662         else
1663                 /* ensure we have enough space for baudrate change code */
1664                 after_img_rsv += KWBOOT_BAUDRATE_BIN_HEADER_SZ +
1665                                  sizeof(kwboot_pre_baud_code) +
1666                                  sizeof(kwboot_baud_code);
1667
1668         if (imgpath) {
1669                 img = kwboot_read_image(imgpath, &size, after_img_rsv);
1670                 if (!img) {
1671                         perror(imgpath);
1672                         goto out;
1673                 }
1674
1675                 rc = kwboot_img_patch(img, &size, baudrate);
1676                 if (rc) {
1677                         fprintf(stderr, "%s: Invalid image.\n", imgpath);
1678                         goto out;
1679                 }
1680         }
1681
1682         if (debugmsg) {
1683                 rc = kwboot_debugmsg(tty, debugmsg);
1684                 if (rc) {
1685                         perror("debugmsg");
1686                         goto out;
1687                 }
1688         } else if (bootmsg) {
1689                 rc = kwboot_bootmsg(tty, bootmsg);
1690                 if (rc) {
1691                         perror("bootmsg");
1692                         goto out;
1693                 }
1694         }
1695
1696         if (img) {
1697                 rc = kwboot_xmodem(tty, img, size, baudrate);
1698                 if (rc) {
1699                         perror("xmodem");
1700                         goto out;
1701                 }
1702         }
1703
1704         if (term) {
1705                 rc = kwboot_terminal(tty);
1706                 if (rc && !(errno == EINTR)) {
1707                         perror("terminal");
1708                         goto out;
1709                 }
1710         }
1711
1712         rv = 0;
1713 out:
1714         if (tty >= 0)
1715                 close(tty);
1716
1717         if (img)
1718                 free(img);
1719
1720         return rv;
1721
1722 usage:
1723         kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
1724         goto out;
1725 }