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         rc = tcgetattr(fd, &tio);
 652         if (rc)
 653                 goto out;
 654
 655         cfmakeraw(&tio);
 656         tio.c_cflag |= CREAD|CLOCAL;
 657         tio.c_cc[VMIN] = 1;
 658         tio.c_cc[VTIME] = 10;
 659
 660         rc = tcsetattr(fd, TCSANOW, &tio);
 661         if (rc)
 662                 goto out;
 663
 664         rc = kwboot_tty_change_baudrate(fd, baudrate);
 665         if (rc)
 666                 goto out;
 667
 668         rc = fd;
 669 out:
 670         if (rc < 0) {
 671                 if (fd >= 0)
 672                         close(fd);
 673         }
 674
 675         return rc;
 676 }
 677
 678 static int
 679 kwboot_bootmsg(int tty, void *msg)
 680 {
 681         int rc;
 682         char c;
 683         int count;
 684
 685         if (msg == NULL)
 686                 kwboot_printv("Please reboot the target into UART boot mode...");
 687         else
 688                 kwboot_printv("Sending boot message. Please reboot the target...");
 689
 690         do {
 691                 rc = tcflush(tty, TCIOFLUSH);
 692                 if (rc)
 693                         break;
 694
 695                 for (count = 0; count < 128; count++) {
 696                         rc = kwboot_tty_send(tty, msg, 8);
 697                         if (rc) {
 698                                 usleep(msg_req_delay * 1000);
 699                                 continue;
 700                         }
 701                 }
 702
 703                 rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
 704
 705                 kwboot_spinner();
 706
 707         } while (rc || c != NAK);
 708
 709         kwboot_printv("\n");
 710
 711         return rc;
 712 }
 713
 714 static int
 715 kwboot_debugmsg(int tty, void *msg)
 716 {
 717         int rc;
 718
 719         kwboot_printv("Sending debug message. Please reboot the target...");
 720
 721         do {
 722                 char buf[16];
 723
 724                 rc = tcflush(tty, TCIOFLUSH);
 725                 if (rc)
 726                         break;
 727
 728                 rc = kwboot_tty_send(tty, msg, 8);
 729                 if (rc) {
 730                         usleep(msg_req_delay * 1000);
 731                         continue;
 732                 }
 733
 734                 rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);
 735
 736                 kwboot_spinner();
 737
 738         } while (rc);
 739
 740         kwboot_printv("\n");
 741
 742         return rc;
 743 }
 744
 745 static size_t
 746 kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
 747                     size_t size, int pnum)
 748 {
 749         size_t i, n;
 750
 751         block->soh = SOH;
 752         block->pnum = pnum;
 753         block->_pnum = ~block->pnum;
 754
 755         n = size < KWBOOT_XM_BLKSZ ? size : KWBOOT_XM_BLKSZ;
 756         memcpy(&block->data[0], data, n);
 757         memset(&block->data[n], 0, KWBOOT_XM_BLKSZ - n);
 758
 759         block->csum = 0;
 760         for (i = 0; i < n; i++)
 761                 block->csum += block->data[i];
 762
 763         return n;
 764 }
 765
 766 static uint64_t
 767 _now(void)
 768 {
 769         struct timespec ts;
 770
 771         if (clock_gettime(CLOCK_MONOTONIC, &ts)) {
 772                 static int err_print;
 773
 774                 if (!err_print) {
 775                         perror("clock_gettime() does not work");
 776                         err_print = 1;
 777                 }
 778
 779                 /* this will just make the timeout not work */
 780                 return -1ULL;
 781         }
 782
 783         return ts.tv_sec * 1000ULL + (ts.tv_nsec + 500000) / 1000000;
 784 }
 785
 786 static int
 787 _is_xm_reply(char c)
 788 {
 789         return c == ACK || c == NAK || c == CAN;
 790 }
 791
 792 static int
 793 _xm_reply_to_error(int c)
 794 {
 795         int rc = -1;
 796
 797         switch (c) {
 798         case ACK:
 799                 rc = 0;
 800                 break;
 801         case NAK:
 802                 errno = EBADMSG;
 803                 break;
 804         case CAN:
 805                 errno = ECANCELED;
 806                 break;
 807         default:
 808                 errno = EPROTO;
 809                 break;
 810         }
 811
 812         return rc;
 813 }
 814
 815 static int
 816 kwboot_baud_magic_handle(int fd, char c, int baudrate)
 817 {
 818         static size_t rcv_len;
 819
 820         if (rcv_len < sizeof(kwb_baud_magic)) {
 821                 /* try to recognize whole magic word */
 822                 if (c == kwb_baud_magic[rcv_len]) {
 823                         rcv_len++;
 824                 } else {
 825                         printf("%.*s%c", (int)rcv_len, kwb_baud_magic, c);
 826                         fflush(stdout);
 827                         rcv_len = 0;
 828                 }
 829         }
 830
 831         if (rcv_len == sizeof(kwb_baud_magic)) {
 832                 /* magic word received */
 833                 kwboot_printv("\nChanging baudrate to %d Bd\n", baudrate);
 834
 835                 return kwboot_tty_change_baudrate(fd, baudrate) ? : 1;
 836         } else {
 837                 return 0;
 838         }
 839 }
 840
 841 static int
 842 kwboot_xm_recv_reply(int fd, char *c, int allow_non_xm, int *non_xm_print,
 843                      int baudrate, int *baud_changed)
 844 {
 845         int timeout = allow_non_xm ? KWBOOT_HDR_RSP_TIMEO : blk_rsp_timeo;
 846         uint64_t recv_until = _now() + timeout;
 847         int rc;
 848
 849         if (non_xm_print)
 850                 *non_xm_print = 0;
 851         if (baud_changed)
 852                 *baud_changed = 0;
 853
 854         while (1) {
 855                 rc = kwboot_tty_recv(fd, c, 1, timeout);
 856                 if (rc) {
 857                         if (errno != ETIMEDOUT)
 858                                 return rc;
 859                         else if (allow_non_xm && *non_xm_print)
 860                                 return -1;
 861                         else
 862                                 *c = NAK;
 863                 }
 864
 865                 /* If received xmodem reply, end. */
 866                 if (_is_xm_reply(*c))
 867                         break;
 868
 869                 /*
 870                  * If receiving/printing non-xmodem text output is allowed and
 871                  * such a byte was received, we want to increase receiving time
 872                  * and either:
 873                  * - print the byte, if it is not part of baudrate change magic
 874                  *   sequence while baudrate change was requested (-B option)
 875                  * - change baudrate
 876                  * Otherwise decrease timeout by time elapsed.
 877                  */
 878                 if (allow_non_xm) {
 879                         recv_until = _now() + timeout;
 880
 881                         if (baudrate && !*baud_changed) {
 882                                 rc = kwboot_baud_magic_handle(fd, *c, baudrate);
 883                                 if (rc == 1)
 884                                         *baud_changed = 1;
 885                                 else if (!rc)
 886                                         *non_xm_print = 1;
 887                                 else
 888                                         return rc;
 889                         } else if (!baudrate || !*baud_changed) {
 890                                 putchar(*c);
 891                                 fflush(stdout);
 892                                 *non_xm_print = 1;
 893                         }
 894                 } else {
 895                         timeout = recv_until - _now();
 896                         if (timeout < 0) {
 897                                 errno = ETIMEDOUT;
 898                                 return -1;
 899                         }
 900                 }
 901         }
 902
 903         return 0;
 904 }
 905
 906 static int
 907 kwboot_xm_sendblock(int fd, struct kwboot_block *block, int allow_non_xm,
 908                     int *done_print, int baudrate)
 909 {
 910         int non_xm_print, baud_changed;
 911         int rc, err, retries;
 912         char c;
 913
 914         *done_print = 0;
 915
 916         retries = 16;
 917         do {
 918                 rc = kwboot_tty_send(fd, block, sizeof(*block));
 919                 if (rc)
 920                         return rc;
 921
 922                 if (allow_non_xm && !*done_print) {
 923                         kwboot_progress(100, '.');
 924                         kwboot_printv("Done\n");
 925                         *done_print = 1;
 926                 }
 927
 928                 rc = kwboot_xm_recv_reply(fd, &c, allow_non_xm, &non_xm_print,
 929                                           baudrate, &baud_changed);
 930                 if (rc)
 931                         goto can;
 932
 933                 if (!allow_non_xm && c != ACK)
 934                         kwboot_progress(-1, '+');
 935         } while (c == NAK && retries-- > 0);
 936
 937         if (non_xm_print)
 938                 kwboot_printv("\n");
 939
 940         if (allow_non_xm && baudrate && !baud_changed) {
 941                 fprintf(stderr, "Baudrate was not changed\n");
 942                 rc = -1;
 943                 errno = EPROTO;
 944                 goto can;
 945         }
 946
 947         return _xm_reply_to_error(c);
 948 can:
 949         err = errno;
 950         kwboot_tty_send_char(fd, CAN);
 951         kwboot_printv("\n");
 952         errno = err;
 953         return rc;
 954 }
 955
 956 static int
 957 kwboot_xm_finish(int fd)
 958 {
 959         int rc, retries;
 960         char c;
 961
 962         kwboot_printv("Finishing transfer\n");
 963
 964         retries = 16;
 965         do {
 966                 rc = kwboot_tty_send_char(fd, EOT);
 967                 if (rc)
 968                         return rc;
 969
 970                 rc = kwboot_xm_recv_reply(fd, &c, 0, NULL, 0, NULL);
 971                 if (rc)
 972                         return rc;
 973         } while (c == NAK && retries-- > 0);
 974
 975         return _xm_reply_to_error(c);
 976 }
 977
 978 static int
 979 kwboot_xmodem_one(int tty, int *pnum, int header, const uint8_t *data,
 980                   size_t size, int baudrate)
 981 {
 982         int done_print = 0;
 983         size_t sent, left;
 984         int rc;
 985
 986         kwboot_printv("Sending boot image %s (%zu bytes)...\n",
 987                       header ? "header" : "data", size);
 988
 989         left = size;
 990         sent = 0;
 991
 992         while (sent < size) {
 993                 struct kwboot_block block;
 994                 int last_block;
 995                 size_t blksz;
 996
 997                 blksz = kwboot_xm_makeblock(&block, data, left, (*pnum)++);
 998                 data += blksz;
 999
1000                 last_block = (left <= blksz);
1001
1002                 rc = kwboot_xm_sendblock(tty, &block, header && last_block,
1003                                          &done_print, baudrate);
1004                 if (rc)
1005                         goto out;
1006
1007                 sent += blksz;
1008                 left -= blksz;
1009
1010                 if (!done_print)
1011                         kwboot_progress(sent * 100 / size, '.');
1012         }
1013
1014         if (!done_print)
1015                 kwboot_printv("Done\n");
1016
1017         return 0;
1018 out:
1019         kwboot_printv("\n");
1020         return rc;
1021 }
1022
1023 static int
1024 kwboot_xmodem(int tty, const void *_img, size_t size, int baudrate)
1025 {
1026         const uint8_t *img = _img;
1027         int rc, pnum;
1028         size_t hdrsz;
1029
1030         hdrsz = kwbheader_size(img);
1031
1032         kwboot_printv("Waiting 2s and flushing tty\n");
1033         sleep(2); /* flush isn't effective without it */
1034         tcflush(tty, TCIOFLUSH);
1035
1036         pnum = 1;
1037
1038         rc = kwboot_xmodem_one(tty, &pnum, 1, img, hdrsz, baudrate);
1039         if (rc)
1040                 return rc;
1041
1042         img += hdrsz;
1043         size -= hdrsz;
1044
1045         rc = kwboot_xmodem_one(tty, &pnum, 0, img, size, 0);
1046         if (rc)
1047                 return rc;
1048
1049         rc = kwboot_xm_finish(tty);
1050         if (rc)
1051                 return rc;
1052
1053         if (baudrate) {
1054                 char buf[sizeof(kwb_baud_magic)];
1055
1056                 /* Wait 1s for baudrate change magic */
1057                 rc = kwboot_tty_recv(tty, buf, sizeof(buf), 1000);
1058                 if (rc)
1059                         return rc;
1060
1061                 if (memcmp(buf, kwb_baud_magic, sizeof(buf))) {
1062                         errno = EPROTO;
1063                         return -1;
1064                 }
1065
1066                 kwboot_printv("\nChanging baudrate back to 115200 Bd\n\n");
1067                 rc = kwboot_tty_change_baudrate(tty, 115200);
1068                 if (rc)
1069                         return rc;
1070         }
1071
1072         return 0;
1073 }
1074
1075 static int
1076 kwboot_term_pipe(int in, int out, const char *quit, int *s)
1077 {
1078         ssize_t nin;
1079         char _buf[128], *buf = _buf;
1080
1081         nin = read(in, buf, sizeof(_buf));
1082         if (nin <= 0)
1083                 return -1;
1084
1085         if (quit) {
1086                 int i;
1087
1088                 for (i = 0; i < nin; i++) {
1089                         if (*buf == quit[*s]) {
1090                                 (*s)++;
1091                                 if (!quit[*s])
1092                                         return 0;
1093                                 buf++;
1094                                 nin--;
1095                         } else {
1096                                 if (kwboot_write(out, quit, *s) < 0)
1097                                         return -1;
1098                                 *s = 0;
1099                         }
1100                 }
1101         }
1102
1103         if (kwboot_write(out, buf, nin) < 0)
1104                 return -1;
1105
1106         return 0;
1107 }
1108
1109 static int
1110 kwboot_terminal(int tty)
1111 {
1112         int rc, in, s;
1113         const char *quit = "\34c";
1114         struct termios otio, tio;
1115
1116         rc = -1;
1117
1118         in = STDIN_FILENO;
1119         if (isatty(in)) {
1120                 rc = tcgetattr(in, &otio);
1121                 if (!rc) {
1122                         tio = otio;
1123                         cfmakeraw(&tio);
1124                         rc = tcsetattr(in, TCSANOW, &tio);
1125                 }
1126                 if (rc) {
1127                         perror("tcsetattr");
1128                         goto out;
1129                 }
1130
1131                 kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
1132                               quit[0]|0100, quit[1]);
1133         } else
1134                 in = -1;
1135
1136         rc = 0;
1137         s = 0;
1138
1139         do {
1140                 fd_set rfds;
1141                 int nfds = 0;
1142
1143                 FD_SET(tty, &rfds);
1144                 nfds = nfds < tty ? tty : nfds;
1145
1146                 if (in >= 0) {
1147                         FD_SET(in, &rfds);
1148                         nfds = nfds < in ? in : nfds;
1149                 }
1150
1151                 nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
1152                 if (nfds < 0)
1153                         break;
1154
1155                 if (FD_ISSET(tty, &rfds)) {
1156                         rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
1157                         if (rc)
1158                                 break;
1159                 }
1160
1161                 if (in >= 0 && FD_ISSET(in, &rfds)) {
1162                         rc = kwboot_term_pipe(in, tty, quit, &s);
1163                         if (rc)
1164                                 break;
1165                 }
1166         } while (quit[s] != 0);
1167
1168         if (in >= 0)
1169                 tcsetattr(in, TCSANOW, &otio);
1170         printf("\n");
1171 out:
1172         return rc;
1173 }
1174
1175 static void *
1176 kwboot_read_image(const char *path, size_t *size, size_t reserve)
1177 {
1178         int rc, fd;
1179         struct stat st;
1180         void *img;
1181         off_t tot;
1182
1183         rc = -1;
1184         img = NULL;
1185
1186         fd = open(path, O_RDONLY);
1187         if (fd < 0)
1188                 goto out;
1189
1190         rc = fstat(fd, &st);
1191         if (rc)
1192                 goto out;
1193
1194         img = malloc(st.st_size + reserve);
1195         if (!img)
1196                 goto out;
1197
1198         tot = 0;
1199         while (tot < st.st_size) {
1200                 ssize_t rd = read(fd, img + tot, st.st_size - tot);
1201
1202                 if (rd < 0)
1203                         goto out;
1204
1205                 tot += rd;
1206
1207                 if (!rd && tot < st.st_size) {
1208                         errno = EIO;
1209                         goto out;
1210                 }
1211         }
1212
1213         rc = 0;
1214         *size = st.st_size;
1215 out:
1216         if (rc && img) {
1217                 free(img);
1218                 img = NULL;
1219         }
1220         if (fd >= 0)
1221                 close(fd);
1222
1223         return img;
1224 }
1225
1226 static uint8_t
1227 kwboot_hdr_csum8(const void *hdr)
1228 {
1229         const uint8_t *data = hdr;
1230         uint8_t csum;
1231         size_t size;
1232
1233         size = kwbheader_size_for_csum(hdr);
1234
1235         for (csum = 0; size-- > 0; data++)
1236                 csum += *data;
1237
1238         return csum;
1239 }
1240
1241 static int
1242 kwboot_img_is_secure(void *img)
1243 {
1244         struct opt_hdr_v1 *ohdr;
1245
1246         for_each_opt_hdr_v1 (ohdr, img)
1247                 if (ohdr->headertype == OPT_HDR_V1_SECURE_TYPE)
1248                         return 1;
1249
1250         return 0;
1251 }
1252
1253 static void *
1254 kwboot_img_grow_data_left(void *img, size_t *size, size_t grow)
1255 {
1256         uint32_t hdrsz, datasz, srcaddr;
1257         struct main_hdr_v1 *hdr = img;
1258         uint8_t *data;
1259
1260         srcaddr = le32_to_cpu(hdr->srcaddr);
1261
1262         hdrsz = kwbheader_size(hdr);
1263         data = (uint8_t *)img + srcaddr;
1264         datasz = *size - srcaddr;
1265
1266         /* only move data if there is not enough space */
1267         if (hdrsz + grow > srcaddr) {
1268                 size_t need = hdrsz + grow - srcaddr;
1269
1270                 /* move data by enough bytes */
1271                 memmove(data + need, data, datasz);
1272                 *size += need;
1273                 srcaddr += need;
1274         }
1275
1276         srcaddr -= grow;
1277         hdr->srcaddr = cpu_to_le32(srcaddr);
1278         hdr->destaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) - grow);
1279         hdr->blocksize = cpu_to_le32(le32_to_cpu(hdr->blocksize) + grow);
1280
1281         return (uint8_t *)img + srcaddr;
1282 }
1283
1284 static void
1285 kwboot_img_grow_hdr(void *img, size_t *size, size_t grow)
1286 {
1287         uint32_t hdrsz, datasz, srcaddr;
1288         struct main_hdr_v1 *hdr = img;
1289         uint8_t *data;
1290
1291         srcaddr = le32_to_cpu(hdr->srcaddr);
1292
1293         hdrsz = kwbheader_size(img);
1294         data = (uint8_t *)img + srcaddr;
1295         datasz = *size - srcaddr;
1296
1297         /* only move data if there is not enough space */
1298         if (hdrsz + grow > srcaddr) {
1299                 size_t need = hdrsz + grow - srcaddr;
1300
1301                 /* move data by enough bytes */
1302                 memmove(data + need, data, datasz);
1303
1304                 hdr->srcaddr = cpu_to_le32(srcaddr + need);
1305                 *size += need;
1306         }
1307
1308         if (kwbimage_version(img) == 1) {
1309                 hdrsz += grow;
1310                 hdr->headersz_msb = hdrsz >> 16;
1311                 hdr->headersz_lsb = cpu_to_le16(hdrsz & 0xffff);
1312         }
1313 }
1314
1315 static void *
1316 kwboot_add_bin_ohdr_v1(void *img, size_t *size, uint32_t binsz)
1317 {
1318         struct main_hdr_v1 *hdr = img;
1319         struct opt_hdr_v1 *ohdr;
1320         uint32_t ohdrsz;
1321
1322         ohdrsz = binsz + 8 + sizeof(*ohdr);
1323         kwboot_img_grow_hdr(img, size, ohdrsz);
1324
1325         if (hdr->ext & 0x1) {
1326                 for_each_opt_hdr_v1 (ohdr, img)
1327                         if (opt_hdr_v1_next(ohdr) == NULL)
1328                                 break;
1329
1330                 *opt_hdr_v1_ext(ohdr) |= 1;
1331                 ohdr = opt_hdr_v1_next(ohdr);
1332         } else {
1333                 hdr->ext |= 1;
1334                 ohdr = (void *)(hdr + 1);
1335         }
1336
1337         ohdr->headertype = OPT_HDR_V1_BINARY_TYPE;
1338         ohdr->headersz_msb = ohdrsz >> 16;
1339         ohdr->headersz_lsb = cpu_to_le16(ohdrsz & 0xffff);
1340
1341         memset(&ohdr->data[0], 0, ohdrsz - sizeof(*ohdr));
1342
1343         return &ohdr->data[4];
1344 }
1345
1346 static void
1347 _copy_baudrate_change_code(struct main_hdr_v1 *hdr, void *dst, int pre,
1348                            int old_baud, int new_baud)
1349 {
1350         size_t codesz = sizeof(kwboot_baud_code);
1351         uint8_t *code = dst;
1352
1353         if (pre) {
1354                 size_t presz = sizeof(kwboot_pre_baud_code);
1355
1356                 /*
1357                  * We need to prepend code that loads lr register with original
1358                  * value of hdr->execaddr. We do this by putting the original
1359                  * exec address before the code that loads it relatively from
1360                  * it's beginning.
1361                  * Afterwards we change the exec address to this code (which is
1362                  * at offset 4, because the first 4 bytes contain the original
1363                  * exec address).
1364                  */
1365                 memcpy(code, kwboot_pre_baud_code, presz);
1366                 *(uint32_t *)code = hdr->execaddr;
1367
1368                 hdr->execaddr = cpu_to_le32(le32_to_cpu(hdr->destaddr) + 4);
1369
1370                 code += presz;
1371         }
1372
1373         memcpy(code, kwboot_baud_code, codesz - 8);
1374         *(uint32_t *)(code + codesz - 8) = cpu_to_le32(old_baud);
1375         *(uint32_t *)(code + codesz - 4) = cpu_to_le32(new_baud);
1376 }
1377
1378 static int
1379 kwboot_img_patch(void *img, size_t *size, int baudrate)
1380 {
1381         int rc;
1382         struct main_hdr_v1 *hdr;
1383         uint32_t srcaddr;
1384         uint8_t csum;
1385         size_t hdrsz;
1386         int image_ver;
1387         int is_secure;
1388
1389         rc = -1;
1390         hdr = img;
1391
1392         if (*size < sizeof(struct main_hdr_v1)) {
1393                 errno = EINVAL;
1394                 goto out;
1395         }
1396
1397         image_ver = kwbimage_version(img);
1398         if (image_ver != 0 && image_ver != 1) {
1399                 fprintf(stderr, "Invalid image header version\n");
1400                 errno = EINVAL;
1401                 goto out;
1402         }
1403
1404         hdrsz = kwbheader_size(hdr);
1405
1406         if (*size < hdrsz) {
1407                 errno = EINVAL;
1408                 goto out;
1409         }
1410
1411         csum = kwboot_hdr_csum8(hdr) - hdr->checksum;
1412         if (csum != hdr->checksum) {
1413                 errno = EINVAL;
1414                 goto out;
1415         }
1416
1417         if (image_ver == 0) {
1418                 struct main_hdr_v0 *hdr_v0 = img;
1419
1420                 hdr_v0->nandeccmode = IBR_HDR_ECC_DISABLED;
1421                 hdr_v0->nandpagesize = 0;
1422         }
1423
1424         srcaddr = le32_to_cpu(hdr->srcaddr);
1425
1426         switch (hdr->blockid) {
1427         case IBR_HDR_SATA_ID:
1428                 if (srcaddr < 1) {
1429                         errno = EINVAL;
1430                         goto out;
1431                 }
1432                 hdr->srcaddr = cpu_to_le32((srcaddr - 1) * 512);
1433                 break;
1434
1435         case IBR_HDR_SDIO_ID:
1436                 hdr->srcaddr = cpu_to_le32(srcaddr * 512);
1437                 break;
1438
1439         case IBR_HDR_PEX_ID:
1440                 if (srcaddr == 0xFFFFFFFF)
1441                         hdr->srcaddr = cpu_to_le32(hdrsz);
1442                 break;
1443
1444         case IBR_HDR_SPI_ID:
1445                 if (hdr->destaddr == cpu_to_le32(0xFFFFFFFF)) {
1446                         kwboot_printv("Patching destination and execution addresses from SPI/NOR XIP area to DDR area 0x00800000\n");
1447                         hdr->destaddr = cpu_to_le32(0x00800000);
1448                         hdr->execaddr = cpu_to_le32(0x00800000);
1449                 }
1450                 break;
1451         }
1452
1453         if (hdrsz > le32_to_cpu(hdr->srcaddr) ||
1454             *size < le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize)) {
1455                 errno = EINVAL;
1456                 goto out;
1457         }
1458
1459         is_secure = kwboot_img_is_secure(img);
1460
1461         if (hdr->blockid != IBR_HDR_UART_ID) {
1462                 if (is_secure) {
1463                         fprintf(stderr,
1464                                 "Image has secure header with signature for non-UART booting\n");
1465                         errno = EINVAL;
1466                         goto out;
1467                 }
1468
1469                 kwboot_printv("Patching image boot signature to UART\n");
1470                 hdr->blockid = IBR_HDR_UART_ID;
1471         }
1472
1473         if (baudrate) {
1474                 uint32_t codesz = sizeof(kwboot_baud_code);
1475                 void *code;
1476
1477                 if (image_ver == 0) {
1478                         fprintf(stderr,
1479                                 "Cannot inject code for changing baudrate into v0 image header\n");
1480                         errno = EINVAL;
1481                         goto out;
1482                 }
1483
1484                 if (is_secure) {
1485                         fprintf(stderr,
1486                                 "Cannot inject code for changing baudrate into image with secure header\n");
1487                         errno = EINVAL;
1488                         goto out;
1489                 }
1490
1491                 /*
1492                  * First inject code that changes the baudrate from the default
1493                  * value of 115200 Bd to requested value. This code is inserted
1494                  * as a new opt hdr, so it is executed by BootROM after the
1495                  * header part is received.
1496                  */
1497                 kwboot_printv("Injecting binary header code for changing baudrate to %d Bd\n",
1498                               baudrate);
1499
1500                 code = kwboot_add_bin_ohdr_v1(img, size, codesz);
1501                 _copy_baudrate_change_code(hdr, code, 0, 115200, baudrate);
1502
1503                 /*
1504                  * Now inject code that changes the baudrate back to 115200 Bd.
1505                  * This code is prepended to the data part of the image, so it
1506                  * is executed before U-Boot proper.
1507                  */
1508                 kwboot_printv("Injecting code for changing baudrate back\n");
1509
1510                 codesz += sizeof(kwboot_pre_baud_code);
1511                 code = kwboot_img_grow_data_left(img, size, codesz);
1512                 _copy_baudrate_change_code(hdr, code, 1, baudrate, 115200);
1513
1514                 /* recompute header size */
1515                 hdrsz = kwbheader_size(hdr);
1516         }
1517
1518         if (hdrsz % KWBOOT_XM_BLKSZ) {
1519                 size_t offset = (KWBOOT_XM_BLKSZ - hdrsz % KWBOOT_XM_BLKSZ) %
1520                                 KWBOOT_XM_BLKSZ;
1521
1522                 if (is_secure) {
1523                         fprintf(stderr, "Cannot align image with secure header\n");
1524                         errno = EINVAL;
1525                         goto out;
1526                 }
1527
1528                 kwboot_printv("Aligning image header to Xmodem block size\n");
1529                 kwboot_img_grow_hdr(img, size, offset);
1530         }
1531
1532         hdr->checksum = kwboot_hdr_csum8(hdr) - csum;
1533
1534         *size = le32_to_cpu(hdr->srcaddr) + le32_to_cpu(hdr->blocksize);
1535         rc = 0;
1536 out:
1537         return rc;
1538 }
1539
1540 static void
1541 kwboot_usage(FILE *stream, char *progname)
1542 {
1543         fprintf(stream, "kwboot version %s\n", PLAIN_VERSION);
1544         fprintf(stream,
1545                 "Usage: %s [OPTIONS] [-b <image> | -D <image> ] [-B <baud> ] <TTY>\n",
1546                 progname);
1547         fprintf(stream, "\n");
1548         fprintf(stream,
1549                 "  -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
1550         fprintf(stream,
1551                 "  -D <image>: boot <image> without preamble (Dove)\n");
1552         fprintf(stream, "  -d: enter debug mode\n");
1553         fprintf(stream, "  -a: use timings for Armada XP\n");
1554         fprintf(stream, "  -q <req-delay>:  use specific request-delay\n");
1555         fprintf(stream, "  -s <resp-timeo>: use specific response-timeout\n");
1556         fprintf(stream,
1557                 "  -o <block-timeo>: use specific xmodem block timeout\n");
1558         fprintf(stream, "\n");
1559         fprintf(stream, "  -t: mini terminal\n");
1560         fprintf(stream, "\n");
1561         fprintf(stream, "  -B <baud>: set baud rate\n");
1562         fprintf(stream, "\n");
1563 }
1564
1565 int
1566 main(int argc, char **argv)
1567 {
1568         const char *ttypath, *imgpath;
1569         int rv, rc, tty, term;
1570         void *bootmsg;
1571         void *debugmsg;
1572         void *img;
1573         size_t size;
1574         size_t after_img_rsv;
1575         int baudrate;
1576
1577         rv = 1;
1578         tty = -1;
1579         bootmsg = NULL;
1580         debugmsg = NULL;
1581         imgpath = NULL;
1582         img = NULL;
1583         term = 0;
1584         size = 0;
1585         after_img_rsv = KWBOOT_XM_BLKSZ;
1586         baudrate = 115200;
1587
1588         kwboot_verbose = isatty(STDOUT_FILENO);
1589
1590         do {
1591                 int c = getopt(argc, argv, "hb:ptaB:dD:q:s:o:");
1592                 if (c < 0)
1593                         break;
1594
1595                 switch (c) {
1596                 case 'b':
1597                         bootmsg = kwboot_msg_boot;
1598                         imgpath = optarg;
1599                         break;
1600
1601                 case 'D':
1602                         bootmsg = NULL;
1603                         imgpath = optarg;
1604                         break;
1605
1606                 case 'd':
1607                         debugmsg = kwboot_msg_debug;
1608                         break;
1609
1610                 case 'p':
1611                         /* nop, for backward compatibility */
1612                         break;
1613
1614                 case 't':
1615                         term = 1;
1616                         break;
1617
1618                 case 'a':
1619                         msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
1620                         msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
1621                         break;
1622
1623                 case 'q':
1624                         msg_req_delay = atoi(optarg);
1625                         break;
1626
1627                 case 's':
1628                         msg_rsp_timeo = atoi(optarg);
1629                         break;
1630
1631                 case 'o':
1632                         blk_rsp_timeo = atoi(optarg);
1633                         break;
1634
1635                 case 'B':
1636                         baudrate = atoi(optarg);
1637                         break;
1638
1639                 case 'h':
1640                         rv = 0;
1641                 default:
1642                         goto usage;
1643                 }
1644         } while (1);
1645
1646         if (!bootmsg && !term && !debugmsg)
1647                 goto usage;
1648
1649         if (argc - optind < 1)
1650                 goto usage;
1651
1652         ttypath = argv[optind++];
1653
1654         tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate);
1655         if (tty < 0) {
1656                 perror(ttypath);
1657                 goto out;
1658         }
1659
1660         if (baudrate == 115200)
1661                 /* do not change baudrate during Xmodem to the same value */
1662                 baudrate = 0;
1663         else
1664                 /* ensure we have enough space for baudrate change code */
1665                 after_img_rsv += KWBOOT_BAUDRATE_BIN_HEADER_SZ +
1666                                  sizeof(kwboot_pre_baud_code) +
1667                                  sizeof(kwboot_baud_code);
1668
1669         if (imgpath) {
1670                 img = kwboot_read_image(imgpath, &size, after_img_rsv);
1671                 if (!img) {
1672                         perror(imgpath);
1673                         goto out;
1674                 }
1675
1676                 rc = kwboot_img_patch(img, &size, baudrate);
1677                 if (rc) {
1678                         fprintf(stderr, "%s: Invalid image.\n", imgpath);
1679                         goto out;
1680                 }
1681         }
1682
1683         if (debugmsg) {
1684                 rc = kwboot_debugmsg(tty, debugmsg);
1685                 if (rc) {
1686                         perror("debugmsg");
1687                         goto out;
1688                 }
1689         } else if (bootmsg) {
1690                 rc = kwboot_bootmsg(tty, bootmsg);
1691                 if (rc) {
1692                         perror("bootmsg");
1693                         goto out;
1694                 }
1695         }
1696
1697         if (img) {
1698                 rc = kwboot_xmodem(tty, img, size, baudrate);
1699                 if (rc) {
1700                         perror("xmodem");
1701                         goto out;
1702                 }
1703         }
1704
1705         if (term) {
1706                 rc = kwboot_terminal(tty);
1707                 if (rc && !(errno == EINTR)) {
1708                         perror("terminal");
1709                         goto out;
1710                 }
1711         }
1712
1713         rv = 0;
1714 out:
1715         if (tty >= 0)
1716                 close(tty);
1717
1718         if (img)
1719                 free(img);
1720
1721         return rv;
1722
1723 usage:
1724         kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
1725         goto out;
1726 }