2 * Boot a Marvell Kirkwood SoC, with Xmodem over UART0.
4 * (c) 2012 Daniel Stodden <daniel.stodden@gmail.com>
6 * References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
7 * Integrated Controller: Functional Specifications" December 2,
8 * 2008. Chapter 24.2 "BootROM Firmware".
27 #define PACKED __attribute((packed))
33 * Marvell BootROM UART Sensing
36 static unsigned char kwboot_msg_boot[] = {
37 0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
40 #define KWBOOT_MSG_REQ_DELAY 10 /* ms */
41 #define KWBOOT_MSG_RSP_TIMEO 50 /* ms */
47 #define SOH 1 /* sender start of block header */
48 #define EOT 4 /* sender end of block transfer */
49 #define ACK 6 /* target block ack */
50 #define NAK 21 /* target block negative ack */
51 #define CAN 24 /* target/sender transfer cancellation */
61 #define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */
63 static int kwboot_verbose;
66 kwboot_printv(const char *fmt, ...)
81 const char seq[] = { '-', '\\', '|', '/' };
85 if (state % div == 0) {
87 fputc(seq[state / div % sizeof(seq)], stdout);
103 __progress(int pct, char c)
105 const int width = 70;
106 static const char *nl = "";
109 if (pos % width == 0)
110 printf("%s%3d %% [", nl, pct);
118 while (pos++ < width)
128 kwboot_progress(int _pct, char c)
140 kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
153 tv.tv_usec = timeo * 1000;
154 if (tv.tv_usec > 1000000) {
155 tv.tv_sec += tv.tv_usec / 1000000;
156 tv.tv_usec %= 1000000;
160 nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
168 n = read(fd, buf, len);
172 buf = (char *)buf + n;
182 kwboot_tty_send(int fd, const void *buf, size_t len)
190 n = write(fd, buf, len);
194 buf = (char *)buf + n;
204 kwboot_tty_send_char(int fd, unsigned char c)
206 return kwboot_tty_send(fd, &c, 1);
210 kwboot_tty_speed(int baudrate)
229 kwboot_open_tty(const char *path, speed_t speed)
236 fd = open(path, O_RDWR|O_NOCTTY|O_NDELAY);
240 memset(&tio, 0, sizeof(tio));
243 tio.c_cflag = CREAD|CLOCAL|CS8;
246 tio.c_cc[VTIME] = 10;
248 cfsetospeed(&tio, speed);
249 cfsetispeed(&tio, speed);
251 rc = tcsetattr(fd, TCSANOW, &tio);
266 kwboot_bootmsg(int tty, void *msg)
271 kwboot_printv("Sending boot message. Please reboot the target...");
274 rc = tcflush(tty, TCIOFLUSH);
278 rc = kwboot_tty_send(tty, msg, 8);
280 usleep(KWBOOT_MSG_REQ_DELAY * 1000);
284 rc = kwboot_tty_recv(tty, &c, 1, KWBOOT_MSG_RSP_TIMEO);
288 } while (rc || c != NAK);
296 kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
297 size_t size, int pnum)
299 const size_t blksz = sizeof(block->data);
304 block->_pnum = ~block->pnum;
306 n = size < blksz ? size : blksz;
307 memcpy(&block->data[0], data, n);
308 memset(&block->data[n], 0, blksz - n);
311 for (i = 0; i < n; i++)
312 block->csum += block->data[i];
318 kwboot_xm_sendblock(int fd, struct kwboot_block *block)
325 rc = kwboot_tty_send(fd, block, sizeof(*block));
329 rc = kwboot_tty_recv(fd, &c, 1, KWBOOT_BLK_RSP_TIMEO);
334 kwboot_progress(-1, '+');
336 } while (c == NAK && retries-- > 0);
359 kwboot_xmodem(int tty, const void *_data, size_t size)
361 const uint8_t *data = _data;
362 int rc, pnum, N, err;
367 kwboot_printv("Sending boot image...\n");
370 struct kwboot_block block;
373 n = kwboot_xm_makeblock(&block,
382 rc = kwboot_xm_sendblock(tty, &block);
387 kwboot_progress(N * 100 / size, '.');
390 rc = kwboot_tty_send_char(tty, EOT);
397 kwboot_tty_send_char(tty, CAN);
403 kwboot_term_pipe(int in, int out, char *quit, int *s)
406 char _buf[128], *buf = _buf;
408 nin = read(in, buf, sizeof(buf));
415 for (i = 0; i < nin; i++) {
416 if (*buf == quit[*s]) {
424 nout = write(out, quit, *s);
433 nout = write(out, buf, nin);
443 kwboot_terminal(int tty)
447 struct termios otio, tio;
453 rc = tcgetattr(in, &otio);
457 rc = tcsetattr(in, TCSANOW, &tio);
464 kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
465 quit[0]|0100, quit[1]);
477 nfds = nfds < tty ? tty : nfds;
481 nfds = nfds < in ? in : nfds;
484 nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
488 if (FD_ISSET(tty, &rfds)) {
489 rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
494 if (FD_ISSET(in, &rfds)) {
495 rc = kwboot_term_pipe(in, tty, quit, &s);
499 } while (quit[s] != 0);
501 tcsetattr(in, TCSANOW, &otio);
507 kwboot_mmap_image(const char *path, size_t *size, int prot)
517 fd = open(path, O_RDONLY);
525 flags = (prot & PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED;
527 img = mmap(NULL, st.st_size, prot, flags, fd, 0);
528 if (img == MAP_FAILED) {
537 munmap(img, st.st_size);
547 kwboot_img_csum8(void *_data, size_t size)
549 uint8_t *data = _data, csum;
551 for (csum = 0; size-- > 0; data++)
558 kwboot_img_patch_hdr(void *img, size_t size)
563 const size_t hdrsz = sizeof(*hdr);
573 csum = kwboot_img_csum8(hdr, hdrsz) - hdr->checkSum;
574 if (csum != hdr->checkSum) {
579 if (hdr->blockid == IBR_HDR_UART_ID) {
584 hdr->blockid = IBR_HDR_UART_ID;
586 hdr->nandeccmode = IBR_HDR_ECC_DISABLED;
587 hdr->nandpagesize = 0;
589 hdr->srcaddr = hdr->ext
590 ? sizeof(struct kwb_header)
593 hdr->checkSum = kwboot_img_csum8(hdr, hdrsz) - csum;
601 kwboot_usage(FILE *stream, char *progname)
604 "Usage: %s -b <image> [ -p ] [ -t ] "
605 "[-B <baud> ] <TTY>\n", progname);
606 fprintf(stream, "\n");
607 fprintf(stream, " -b <image>: boot <image>\n");
608 fprintf(stream, " -p: patch <image> to type 0x69 (uart boot)\n");
609 fprintf(stream, "\n");
610 fprintf(stream, " -t: mini terminal\n");
611 fprintf(stream, "\n");
612 fprintf(stream, " -B <baud>: set baud rate\n");
613 fprintf(stream, "\n");
617 main(int argc, char **argv)
619 const char *ttypath, *imgpath;
620 int rv, rc, tty, term, prot, patch;
636 kwboot_verbose = isatty(STDOUT_FILENO);
639 int c = getopt(argc, argv, "hb:ptB:");
645 bootmsg = kwboot_msg_boot;
658 speed = kwboot_tty_speed(atoi(optarg));
670 if (!bootmsg && !term)
673 if (patch && !imgpath)
676 if (argc - optind < 1)
679 ttypath = argv[optind++];
681 tty = kwboot_open_tty(ttypath, speed);
688 prot = PROT_READ | (patch ? PROT_WRITE : 0);
690 img = kwboot_mmap_image(imgpath, &size, prot);
698 rc = kwboot_img_patch_hdr(img, size);
700 fprintf(stderr, "%s: Invalid image.\n", imgpath);
706 rc = kwboot_bootmsg(tty, bootmsg);
714 rc = kwboot_xmodem(tty, img, size);
722 rc = kwboot_terminal(tty);
723 if (rc && !(errno == EINTR)) {
740 kwboot_usage(rv ? stderr : stdout, basename(argv[0]));