[J-u-boot.git] / tools / kwboot.c

/*
 * Boot a Marvell SoC, with Xmodem over UART0.
 *  supports Kirkwood, Dove, Armada 370, Armada XP
 *
 * (c) 2012 Daniel Stodden <[email protected]>
 *
 * References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
 *   Integrated Controller: Functional Specifications" December 2,
 *   2008. Chapter 24.2 "BootROM Firmware".
 */

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <libgen.h>
#include <fcntl.h>
#include <errno.h>
#include <unistd.h>
#include <stdint.h>
#include <termios.h>
#include <sys/mman.h>
#include <sys/stat.h>

#include "kwbimage.h"

#ifdef __GNUC__
#define PACKED __attribute((packed))
#else
#define PACKED
#endif

/*
 * Marvell BootROM UART Sensing
 */

static unsigned char kwboot_msg_boot[] = {
	0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
};

static unsigned char kwboot_msg_debug[] = {
	0xDD, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
};

/* Defines known to work on Kirkwood */
#define KWBOOT_MSG_REQ_DELAY	10 /* ms */
#define KWBOOT_MSG_RSP_TIMEO	50 /* ms */

/* Defines known to work on Armada XP */
#define KWBOOT_MSG_REQ_DELAY_AXP	1000 /* ms */
#define KWBOOT_MSG_RSP_TIMEO_AXP	1000 /* ms */

/*
 * Xmodem Transfers
 */

#define SOH	1	/* sender start of block header */
#define EOT	4	/* sender end of block transfer */
#define ACK	6	/* target block ack */
#define NAK	21	/* target block negative ack */
#define CAN	24	/* target/sender transfer cancellation */

struct kwboot_block {
	uint8_t soh;
	uint8_t pnum;
	uint8_t _pnum;
	uint8_t data[128];
	uint8_t csum;
} PACKED;

#define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */

static int kwboot_verbose;

static int msg_req_delay = KWBOOT_MSG_REQ_DELAY;
static int msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO;

static void
kwboot_printv(const char *fmt, ...)
{
	va_list ap;

	if (kwboot_verbose) {
		va_start(ap, fmt);
		vprintf(fmt, ap);
		va_end(ap);
		fflush(stdout);
	}
}

static void
__spinner(void)
{
	const char seq[] = { '-', '\\', '|', '/' };
	const int div = 8;
	static int state, bs;

	if (state % div == 0) {
		fputc(bs, stdout);
		fputc(seq[state / div % sizeof(seq)], stdout);
		fflush(stdout);
	}

	bs = '\b';
	state++;
}

static void
kwboot_spinner(void)
{
	if (kwboot_verbose)
		__spinner();
}

static void
__progress(int pct, char c)
{
	const int width = 70;
	static const char *nl = "";
	static int pos;

	if (pos % width == 0)
		printf("%s%3d %% [", nl, pct);

	fputc(c, stdout);

	nl = "]\n";
	pos++;

	if (pct == 100) {
		while (pos++ < width)
			fputc(' ', stdout);
		fputs(nl, stdout);
	}

	fflush(stdout);

}

static void
kwboot_progress(int _pct, char c)
{
	static int pct;

	if (_pct != -1)
		pct = _pct;

	if (kwboot_verbose)
		__progress(pct, c);
}

static int
kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
{
	int rc, nfds;
	fd_set rfds;
	struct timeval tv;
	ssize_t n;

	rc = -1;

	FD_ZERO(&rfds);
	FD_SET(fd, &rfds);

	tv.tv_sec = 0;
	tv.tv_usec = timeo * 1000;
	if (tv.tv_usec > 1000000) {
		tv.tv_sec += tv.tv_usec / 1000000;
		tv.tv_usec %= 1000000;
	}

	do {
		nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
		if (nfds < 0)
			goto out;
		if (!nfds) {
			errno = ETIMEDOUT;
			goto out;
		}

		n = read(fd, buf, len);
		if (n < 0)
			goto out;

		buf = (char *)buf + n;
		len -= n;
	} while (len > 0);

	rc = 0;
out:
	return rc;
}

static int
kwboot_tty_send(int fd, const void *buf, size_t len)
{
	int rc;
	ssize_t n;

	if (!buf)
		return 0;

	rc = -1;

	do {
		n = write(fd, buf, len);
		if (n < 0)
			goto out;

		buf = (char *)buf + n;
		len -= n;
	} while (len > 0);

	rc = tcdrain(fd);
out:
	return rc;
}

static int
kwboot_tty_send_char(int fd, unsigned char c)
{
	return kwboot_tty_send(fd, &c, 1);
}

static speed_t
kwboot_tty_speed(int baudrate)
{
	switch (baudrate) {
	case 115200:
		return B115200;
	case 57600:
		return B57600;
	case 38400:
		return B38400;
	case 19200:
		return B19200;
	case 9600:
		return B9600;
	}

	return -1;
}

static int
kwboot_open_tty(const char *path, speed_t speed)
{
	int rc, fd;
	struct termios tio;

	rc = -1;

	fd = open(path, O_RDWR|O_NOCTTY|O_NDELAY);
	if (fd < 0)
		goto out;

	memset(&tio, 0, sizeof(tio));

	tio.c_iflag = 0;
	tio.c_cflag = CREAD|CLOCAL|CS8;

	tio.c_cc[VMIN] = 1;
	tio.c_cc[VTIME] = 10;

	cfsetospeed(&tio, speed);
	cfsetispeed(&tio, speed);

	rc = tcsetattr(fd, TCSANOW, &tio);
	if (rc)
		goto out;

	rc = fd;
out:
	if (rc < 0) {
		if (fd >= 0)
			close(fd);
	}

	return rc;
}

static int
kwboot_bootmsg(int tty, void *msg)
{
	int rc;
	char c;

	if (msg == NULL)
		kwboot_printv("Please reboot the target into UART boot mode...");
	else
		kwboot_printv("Sending boot message. Please reboot the target...");

	do {
		rc = tcflush(tty, TCIOFLUSH);
		if (rc)
			break;

		rc = kwboot_tty_send(tty, msg, 8);
		if (rc) {
			usleep(msg_req_delay * 1000);
			continue;
		}

		rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);

		kwboot_spinner();

	} while (rc || c != NAK);

	kwboot_printv("\n");

	return rc;
}

static int
kwboot_debugmsg(int tty, void *msg)
{
	int rc;

	kwboot_printv("Sending debug message. Please reboot the target...");

	do {
		char buf[16];

		rc = tcflush(tty, TCIOFLUSH);
		if (rc)
			break;

		rc = kwboot_tty_send(tty, msg, 8);
		if (rc) {
			usleep(msg_req_delay * 1000);
			continue;
		}

		rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);

		kwboot_spinner();

	} while (rc);

	kwboot_printv("\n");

	return rc;
}

static int
kwboot_xm_makeblock(struct kwboot_block *block, const void *data,
		    size_t size, int pnum)
{
	const size_t blksz = sizeof(block->data);
	size_t n;
	int i;

	block->soh = SOH;
	block->pnum = pnum;
	block->_pnum = ~block->pnum;

	n = size < blksz ? size : blksz;
	memcpy(&block->data[0], data, n);
	memset(&block->data[n], 0, blksz - n);

	block->csum = 0;
	for (i = 0; i < n; i++)
		block->csum += block->data[i];

	return n;
}

static int
kwboot_xm_sendblock(int fd, struct kwboot_block *block)
{
	int rc, retries;
	char c;

	retries = 16;
	do {
		rc = kwboot_tty_send(fd, block, sizeof(*block));
		if (rc)
			break;

		do {
			rc = kwboot_tty_recv(fd, &c, 1, KWBOOT_BLK_RSP_TIMEO);
			if (rc)
				break;

			if (c != ACK && c != NAK && c != CAN)
				printf("%c", c);

		} while (c != ACK && c != NAK && c != CAN);

		if (c != ACK)
			kwboot_progress(-1, '+');

	} while (c == NAK && retries-- > 0);

	rc = -1;

	switch (c) {
	case ACK:
		rc = 0;
		break;
	case NAK:
		errno = EBADMSG;
		break;
	case CAN:
		errno = ECANCELED;
		break;
	default:
		errno = EPROTO;
		break;
	}

	return rc;
}

static int
kwboot_xmodem(int tty, const void *_data, size_t size)
{
	const uint8_t *data = _data;
	int rc, pnum, N, err;

	pnum = 1;
	N = 0;

	kwboot_printv("Sending boot image...\n");

	do {
		struct kwboot_block block;
		int n;

		n = kwboot_xm_makeblock(&block,
					data + N, size - N,
					pnum++);
		if (n < 0)
			goto can;

		if (!n)
			break;

		rc = kwboot_xm_sendblock(tty, &block);
		if (rc)
			goto out;

		N += n;
		kwboot_progress(N * 100 / size, '.');
	} while (1);

	rc = kwboot_tty_send_char(tty, EOT);

out:
	return rc;

can:
	err = errno;
	kwboot_tty_send_char(tty, CAN);
	errno = err;
	goto out;
}

static int
kwboot_term_pipe(int in, int out, char *quit, int *s)
{
	ssize_t nin, nout;
	char _buf[128], *buf = _buf;

	nin = read(in, buf, sizeof(buf));
	if (nin < 0)
		return -1;

	if (quit) {
		int i;

		for (i = 0; i < nin; i++) {
			if (*buf == quit[*s]) {
				(*s)++;
				if (!quit[*s])
					return 0;
				buf++;
				nin--;
			} else
				while (*s > 0) {
					nout = write(out, quit, *s);
					if (nout <= 0)
						return -1;
					(*s) -= nout;
				}
		}
	}

	while (nin > 0) {
		nout = write(out, buf, nin);
		if (nout <= 0)
			return -1;
		nin -= nout;
	}

	return 0;
}

static int
kwboot_terminal(int tty)
{
	int rc, in, s;
	char *quit = "\34c";
	struct termios otio, tio;

	rc = -1;

	in = STDIN_FILENO;
	if (isatty(in)) {
		rc = tcgetattr(in, &otio);
		if (!rc) {
			tio = otio;
			cfmakeraw(&tio);
			rc = tcsetattr(in, TCSANOW, &tio);
		}
		if (rc) {
			perror("tcsetattr");
			goto out;
		}

		kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
			      quit[0]|0100, quit[1]);
	} else
		in = -1;

	rc = 0;
	s = 0;

	do {
		fd_set rfds;
		int nfds = 0;

		FD_SET(tty, &rfds);
		nfds = nfds < tty ? tty : nfds;

		if (in >= 0) {
			FD_SET(in, &rfds);
			nfds = nfds < in ? in : nfds;
		}

		nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
		if (nfds < 0)
			break;

		if (FD_ISSET(tty, &rfds)) {
			rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
			if (rc)
				break;
		}

		if (FD_ISSET(in, &rfds)) {
			rc = kwboot_term_pipe(in, tty, quit, &s);
			if (rc)
				break;
		}
	} while (quit[s] != 0);

	tcsetattr(in, TCSANOW, &otio);
out:
	return rc;
}

static void *
kwboot_mmap_image(const char *path, size_t *size, int prot)
{
	int rc, fd, flags;
	struct stat st;
	void *img;

	rc = -1;
	img = NULL;

	fd = open(path, O_RDONLY);
	if (fd < 0)
		goto out;

	rc = fstat(fd, &st);
	if (rc)
		goto out;

	flags = (prot & PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED;

	img = mmap(NULL, st.st_size, prot, flags, fd, 0);
	if (img == MAP_FAILED) {
		img = NULL;
		goto out;
	}

	rc = 0;
	*size = st.st_size;
out:
	if (rc && img) {
		munmap(img, st.st_size);
		img = NULL;
	}
	if (fd >= 0)
		close(fd);

	return img;
}

static uint8_t
kwboot_img_csum8(void *_data, size_t size)
{
	uint8_t *data = _data, csum;

	for (csum = 0; size-- > 0; data++)
		csum += *data;

	return csum;
}

static int
kwboot_img_patch_hdr(void *img, size_t size)
{
	int rc;
	bhr_t *hdr;
	uint8_t csum;
	const size_t hdrsz = sizeof(*hdr);

	rc = -1;
	hdr = img;

	if (size < hdrsz) {
		errno = EINVAL;
		goto out;
	}

	csum = kwboot_img_csum8(hdr, hdrsz) - hdr->checkSum;
	if (csum != hdr->checkSum) {
		errno = EINVAL;
		goto out;
	}

	if (hdr->blockid == IBR_HDR_UART_ID) {
		rc = 0;
		goto out;
	}

	hdr->blockid = IBR_HDR_UART_ID;

	hdr->nandeccmode = IBR_HDR_ECC_DISABLED;
	hdr->nandpagesize = 0;

	hdr->srcaddr = hdr->ext
		? sizeof(struct kwb_header)
		: sizeof(*hdr);

	hdr->checkSum = kwboot_img_csum8(hdr, hdrsz) - csum;

	rc = 0;
out:
	return rc;
}

static void
kwboot_usage(FILE *stream, char *progname)
{
	fprintf(stream,
		"Usage: %s [-d | -a | -b <image> | -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
		progname);
	fprintf(stream, "\n");
	fprintf(stream,
		"  -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
	fprintf(stream, "  -p: patch <image> to type 0x69 (uart boot)\n");
	fprintf(stream,
		"  -D <image>: boot <image> without preamble (Dove)\n");
	fprintf(stream, "  -d: enter debug mode\n");
	fprintf(stream, "  -a: use timings for Armada XP\n");
	fprintf(stream, "\n");
	fprintf(stream, "  -t: mini terminal\n");
	fprintf(stream, "\n");
	fprintf(stream, "  -B <baud>: set baud rate\n");
	fprintf(stream, "\n");
}

int
main(int argc, char **argv)
{
	const char *ttypath, *imgpath;
	int rv, rc, tty, term, prot, patch;
	void *bootmsg;
	void *debugmsg;
	void *img;
	size_t size;
	speed_t speed;

	rv = 1;
	tty = -1;
	bootmsg = NULL;
	debugmsg = NULL;
	imgpath = NULL;
	img = NULL;
	term = 0;
	patch = 0;
	size = 0;
	speed = B115200;

	kwboot_verbose = isatty(STDOUT_FILENO);

	do {
		int c = getopt(argc, argv, "hb:ptaB:dD:");
		if (c < 0)
			break;

		switch (c) {
		case 'b':
			bootmsg = kwboot_msg_boot;
			imgpath = optarg;
			break;

		case 'D':
			bootmsg = NULL;
			imgpath = optarg;
			break;

		case 'd':
			debugmsg = kwboot_msg_debug;
			break;

		case 'p':
			patch = 1;
			break;

		case 't':
			term = 1;
			break;

		case 'a':
			msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
			msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
			break;

		case 'B':
			speed = kwboot_tty_speed(atoi(optarg));
			if (speed == -1)
				goto usage;
			break;

		case 'h':
			rv = 0;
		default:
			goto usage;
		}
	} while (1);

	if (!bootmsg && !term && !debugmsg)
		goto usage;

	if (patch && !imgpath)
		goto usage;

	if (argc - optind < 1)
		goto usage;

	ttypath = argv[optind++];

	tty = kwboot_open_tty(ttypath, speed);
	if (tty < 0) {
		perror(ttypath);
		goto out;
	}

	if (imgpath) {
		prot = PROT_READ | (patch ? PROT_WRITE : 0);

		img = kwboot_mmap_image(imgpath, &size, prot);
		if (!img) {
			perror(imgpath);
			goto out;
		}
	}

	if (patch) {
		rc = kwboot_img_patch_hdr(img, size);
		if (rc) {
			fprintf(stderr, "%s: Invalid image.\n", imgpath);
			goto out;
		}
	}

	if (debugmsg) {
		rc = kwboot_debugmsg(tty, debugmsg);
		if (rc) {
			perror("debugmsg");
			goto out;
		}
	} else {
		rc = kwboot_bootmsg(tty, bootmsg);
		if (rc) {
			perror("bootmsg");
			goto out;
		}
	}

	if (img) {
		rc = kwboot_xmodem(tty, img, size);
		if (rc) {
			perror("xmodem");
			goto out;
		}
	}

	if (term) {
		rc = kwboot_terminal(tty);
		if (rc && !(errno == EINTR)) {
			perror("terminal");
			goto out;
		}
	}

	rv = 0;
out:
	if (tty >= 0)
		close(tty);

	if (img)
		munmap(img, size);

	return rv;

usage:
	kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
	goto out;
}
Commit	Line	Data
d131ad68	1	/*
84899e2d SR	2	* Boot a Marvell SoC, with Xmodem over UART0.
84899e2d SR	3	* supports Kirkwood, Dove, Armada 370, Armada XP
d131ad68 LP	4	*
	5	* (c) 2012 Daniel Stodden <[email protected]>
	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 <stdlib.h>
	13	#include <stdio.h>
	14	#include <string.h>
	15	#include <stdarg.h>
	16	#include <libgen.h>
	17	#include <fcntl.h>
	18	#include <errno.h>
	19	#include <unistd.h>
	20	#include <stdint.h>
	21	#include <termios.h>
	22	#include <sys/mman.h>
	23	#include <sys/stat.h>
	24
	25	#include "kwbimage.h"
	26
	27	#ifdef __GNUC__
	28	#define PACKED __attribute((packed))
	29	#else
	30	#define PACKED
	31	#endif
	32
	33	/*
	34	* Marvell BootROM UART Sensing
	35	*/
	36
	37	static unsigned char kwboot_msg_boot[] = {
	38	0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
	39	};
	40
84899e2d SR	41	static unsigned char kwboot_msg_debug[] = {
	42	0xDD, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
	43	};
	44
	45	/* Defines known to work on Kirkwood */
d131ad68 LP	46	#define KWBOOT_MSG_REQ_DELAY 10 /* ms */
	47	#define KWBOOT_MSG_RSP_TIMEO 50 /* ms */
	48
84899e2d SR	49	/* Defines known to work on Armada XP */
	50	#define KWBOOT_MSG_REQ_DELAY_AXP 1000 /* ms */
	51	#define KWBOOT_MSG_RSP_TIMEO_AXP 1000 /* ms */
	52
d131ad68 LP	53	/*
	54	* Xmodem Transfers
	55	*/
	56
	57	#define SOH 1 /* sender start of block header */
	58	#define EOT 4 /* sender end of block transfer */
	59	#define ACK 6 /* target block ack */
	60	#define NAK 21 /* target block negative ack */
	61	#define CAN 24 /* target/sender transfer cancellation */
	62
	63	struct kwboot_block {
	64	uint8_t soh;
	65	uint8_t pnum;
	66	uint8_t _pnum;
	67	uint8_t data[128];
	68	uint8_t csum;
	69	} PACKED;
	70
	71	#define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */
	72
	73	static int kwboot_verbose;
	74
84899e2d SR	75	static int msg_req_delay = KWBOOT_MSG_REQ_DELAY;
	76	static int msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO;
	77
d131ad68 LP	78	static void
	79	kwboot_printv(const char *fmt, ...)
	80	{
	81	va_list ap;
	82
	83	if (kwboot_verbose) {
	84	va_start(ap, fmt);
	85	vprintf(fmt, ap);
	86	va_end(ap);
	87	fflush(stdout);
	88	}
	89	}
	90
	91	static void
	92	__spinner(void)
	93	{
	94	const char seq[] = { '-', '\\', '\|', '/' };
	95	const int div = 8;
	96	static int state, bs;
	97
	98	if (state % div == 0) {
	99	fputc(bs, stdout);
	100	fputc(seq[state / div % sizeof(seq)], stdout);
	101	fflush(stdout);
	102	}
	103
	104	bs = '\b';
	105	state++;
	106	}
	107
	108	static void
	109	kwboot_spinner(void)
	110	{
	111	if (kwboot_verbose)
	112	__spinner();
	113	}
	114
	115	static void
	116	__progress(int pct, char c)
	117	{
	118	const int width = 70;
	119	static const char *nl = "";
	120	static int pos;
	121
	122	if (pos % width == 0)
	123	printf("%s%3d %% [", nl, pct);
	124
	125	fputc(c, stdout);
	126
	127	nl = "]\n";
	128	pos++;
	129
	130	if (pct == 100) {
	131	while (pos++ < width)
	132	fputc(' ', stdout);
	133	fputs(nl, stdout);
	134	}
	135
	136	fflush(stdout);
	137
	138	}
	139
	140	static void
	141	kwboot_progress(int _pct, char c)
142	{
143	static int pct;
144
145	if (_pct != -1)
146	pct = _pct;
147
148	if (kwboot_verbose)
149	__progress(pct, c);
150	}
151
152	static int
153	kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
154	{
155	int rc, nfds;
156	fd_set rfds;
157	struct timeval tv;
158	ssize_t n;
159
160	rc = -1;
161
162	FD_ZERO(&rfds);
163	FD_SET(fd, &rfds);
164
165	tv.tv_sec = 0;
166	tv.tv_usec = timeo * 1000;
167	if (tv.tv_usec > 1000000) {
168	tv.tv_sec += tv.tv_usec / 1000000;
169	tv.tv_usec %= 1000000;
170	}
171
172	do {
173	nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
174	if (nfds < 0)
175	goto out;
176	if (!nfds) {
177	errno = ETIMEDOUT;
178	goto out;
179	}
180
181	n = read(fd, buf, len);
182	if (n < 0)
183	goto out;
184
185	buf = (char *)buf + n;
186	len -= n;
187	} while (len > 0);
188
189	rc = 0;
190	out:
191	return rc;
192	}
193
194	static int
195	kwboot_tty_send(int fd, const void *buf, size_t len)
196	{
197	int rc;
198	ssize_t n;
199
84899e2d SR	200	if (!buf)
	201	return 0;
	202
d131ad68 LP	203	rc = -1;
	204
	205	do {
	206	n = write(fd, buf, len);
	207	if (n < 0)
	208	goto out;
	209
	210	buf = (char *)buf + n;
	211	len -= n;
	212	} while (len > 0);
	213
	214	rc = tcdrain(fd);
	215	out:
	216	return rc;
	217	}
	218
	219	static int
	220	kwboot_tty_send_char(int fd, unsigned char c)
	221	{
	222	return kwboot_tty_send(fd, &c, 1);
	223	}
	224
	225	static speed_t
	226	kwboot_tty_speed(int baudrate)
	227	{
	228	switch (baudrate) {
	229	case 115200:
	230	return B115200;
	231	case 57600:
	232	return B57600;
	233	case 38400:
	234	return B38400;
	235	case 19200:
	236	return B19200;
	237	case 9600:
	238	return B9600;
	239	}
	240
	241	return -1;
	242	}
	243
	244	static int
	245	kwboot_open_tty(const char *path, speed_t speed)
	246	{
	247	int rc, fd;
	248	struct termios tio;
	249
	250	rc = -1;
	251
	252	fd = open(path, O_RDWR\|O_NOCTTY\|O_NDELAY);
	253	if (fd < 0)
	254	goto out;
	255
	256	memset(&tio, 0, sizeof(tio));
	257
	258	tio.c_iflag = 0;
	259	tio.c_cflag = CREAD\|CLOCAL\|CS8;
	260
	261	tio.c_cc[VMIN] = 1;
	262	tio.c_cc[VTIME] = 10;
	263
	264	cfsetospeed(&tio, speed);
	265	cfsetispeed(&tio, speed);
	266
267	rc = tcsetattr(fd, TCSANOW, &tio);
268	if (rc)
269	goto out;
270
271	rc = fd;
272	out:
273	if (rc < 0) {
274	if (fd >= 0)
275	close(fd);
276	}
277
278	return rc;
279	}
280
281	static int
282	kwboot_bootmsg(int tty, void *msg)
283	{
284	int rc;
285	char c;
286
84899e2d SR	287	if (msg == NULL)
	288	kwboot_printv("Please reboot the target into UART boot mode...");
	289	else
	290	kwboot_printv("Sending boot message. Please reboot the target...");
d131ad68 LP	291
	292	do {
	293	rc = tcflush(tty, TCIOFLUSH);
	294	if (rc)
	295	break;
	296
	297	rc = kwboot_tty_send(tty, msg, 8);
	298	if (rc) {
84899e2d	299	usleep(msg_req_delay * 1000);
d131ad68 LP	300	continue;
	301	}
	302
84899e2d	303	rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
d131ad68 LP	304
	305	kwboot_spinner();
	306
	307	} while (rc \|\| c != NAK);
	308
	309	kwboot_printv("\n");
	310
	311	return rc;
	312	}
	313
84899e2d SR	314	static int
	315	kwboot_debugmsg(int tty, void *msg)
	316	{
	317	int rc;
	318
	319	kwboot_printv("Sending debug message. Please reboot the target...");
	320
	321	do {
	322	char buf[16];
	323
	324	rc = tcflush(tty, TCIOFLUSH);
	325	if (rc)
	326	break;
	327
	328	rc = kwboot_tty_send(tty, msg, 8);
	329	if (rc) {
	330	usleep(msg_req_delay * 1000);
	331	continue;
	332	}
	333
	334	rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);
	335
	336	kwboot_spinner();
	337
	338	} while (rc);
	339
	340	kwboot_printv("\n");
	341
	342	return rc;
	343	}
	344
d131ad68 LP	345	static int
	346	kwboot_xm_makeblock(struct kwboot_block block, const void data,
	347	size_t size, int pnum)
	348	{
	349	const size_t blksz = sizeof(block->data);
	350	size_t n;
	351	int i;
	352
84899e2d	353	block->soh = SOH;
d131ad68 LP	354	block->pnum = pnum;
	355	block->_pnum = ~block->pnum;
	356
	357	n = size < blksz ? size : blksz;
	358	memcpy(&block->data[0], data, n);
	359	memset(&block->data[n], 0, blksz - n);
	360
	361	block->csum = 0;
	362	for (i = 0; i < n; i++)
	363	block->csum += block->data[i];
	364
	365	return n;
	366	}
	367
	368	static int
	369	kwboot_xm_sendblock(int fd, struct kwboot_block *block)
	370	{
	371	int rc, retries;
	372	char c;
	373
	374	retries = 16;
	375	do {
	376	rc = kwboot_tty_send(fd, block, sizeof(*block));
	377	if (rc)
	378	break;
	379
84899e2d SR	380	do {
	381	rc = kwboot_tty_recv(fd, &c, 1, KWBOOT_BLK_RSP_TIMEO);
	382	if (rc)
	383	break;
	384
	385	if (c != ACK && c != NAK && c != CAN)
	386	printf("%c", c);
	387
	388	} while (c != ACK && c != NAK && c != CAN);
d131ad68 LP	389
	390	if (c != ACK)
	391	kwboot_progress(-1, '+');
	392
	393	} while (c == NAK && retries-- > 0);
	394
	395	rc = -1;
	396
	397	switch (c) {
	398	case ACK:
	399	rc = 0;
	400	break;
	401	case NAK:
	402	errno = EBADMSG;
	403	break;
	404	case CAN:
	405	errno = ECANCELED;
	406	break;
	407	default:
	408	errno = EPROTO;
	409	break;
	410	}
	411
	412	return rc;
	413	}
	414
	415	static int
	416	kwboot_xmodem(int tty, const void *_data, size_t size)
	417	{
	418	const uint8_t *data = _data;
	419	int rc, pnum, N, err;
	420
	421	pnum = 1;
	422	N = 0;
	423
	424	kwboot_printv("Sending boot image...\n");
	425
	426	do {
	427	struct kwboot_block block;
	428	int n;
	429
	430	n = kwboot_xm_makeblock(&block,
	431	data + N, size - N,
	432	pnum++);
	433	if (n < 0)
	434	goto can;
	435
	436	if (!n)
	437	break;
	438
	439	rc = kwboot_xm_sendblock(tty, &block);
	440	if (rc)
	441	goto out;
	442
	443	N += n;
	444	kwboot_progress(N * 100 / size, '.');
	445	} while (1);
	446
	447	rc = kwboot_tty_send_char(tty, EOT);
	448
	449	out:
	450	return rc;
	451
	452	can:
453	err = errno;
454	kwboot_tty_send_char(tty, CAN);
455	errno = err;
456	goto out;
457	}
458
459	static int
460	kwboot_term_pipe(int in, int out, char quit, int s)
461	{
462	ssize_t nin, nout;
463	char _buf[128], *buf = _buf;
464
465	nin = read(in, buf, sizeof(buf));
466	if (nin < 0)
467	return -1;
468
469	if (quit) {
470	int i;
471
472	for (i = 0; i < nin; i++) {
473	if (buf == quit[s]) {
474	(*s)++;
475	if (!quit[*s])
476	return 0;
477	buf++;
478	nin--;
479	} else
480	while (*s > 0) {
481	nout = write(out, quit, *s);
482	if (nout <= 0)
483	return -1;
484	(*s) -= nout;
485	}
486	}
487	}
488
489	while (nin > 0) {
490	nout = write(out, buf, nin);
491	if (nout <= 0)
492	return -1;
493	nin -= nout;
494	}
495
496	return 0;
497	}
498
499	static int
500	kwboot_terminal(int tty)
501	{
502	int rc, in, s;
503	char *quit = "\34c";
504	struct termios otio, tio;
505
506	rc = -1;
507
508	in = STDIN_FILENO;
509	if (isatty(in)) {
510	rc = tcgetattr(in, &otio);
511	if (!rc) {
512	tio = otio;
513	cfmakeraw(&tio);
514	rc = tcsetattr(in, TCSANOW, &tio);
515	}
516	if (rc) {
517	perror("tcsetattr");
518	goto out;
519	}
520
521	kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
522	quit[0]\|0100, quit[1]);
523	} else
524	in = -1;
525
526	rc = 0;
527	s = 0;
528
529	do {
530	fd_set rfds;
531	int nfds = 0;
532
533	FD_SET(tty, &rfds);
534	nfds = nfds < tty ? tty : nfds;
535
536	if (in >= 0) {
537	FD_SET(in, &rfds);
538	nfds = nfds < in ? in : nfds;
539	}
540
541	nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
542	if (nfds < 0)
543	break;
544
545	if (FD_ISSET(tty, &rfds)) {
546	rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
547	if (rc)
548	break;
549	}
550
551	if (FD_ISSET(in, &rfds)) {
552	rc = kwboot_term_pipe(in, tty, quit, &s);
553	if (rc)
554	break;
555	}
556	} while (quit[s] != 0);
557
558	tcsetattr(in, TCSANOW, &otio);
559	out:
560	return rc;
561	}
562
563	static void *
564	kwboot_mmap_image(const char path, size_t size, int prot)
565	{
566	int rc, fd, flags;
567	struct stat st;
568	void *img;
569
570	rc = -1;
d131ad68 LP	571	img = NULL;
	572
	573	fd = open(path, O_RDONLY);
	574	if (fd < 0)
	575	goto out;
	576
	577	rc = fstat(fd, &st);
	578	if (rc)
	579	goto out;
	580
	581	flags = (prot & PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED;
	582
	583	img = mmap(NULL, st.st_size, prot, flags, fd, 0);
	584	if (img == MAP_FAILED) {
	585	img = NULL;
	586	goto out;
	587	}
	588
	589	rc = 0;
	590	*size = st.st_size;
	591	out:
	592	if (rc && img) {
	593	munmap(img, st.st_size);
	594	img = NULL;
	595	}
	596	if (fd >= 0)
	597	close(fd);
	598
	599	return img;
	600	}
	601
	602	static uint8_t
	603	kwboot_img_csum8(void *_data, size_t size)
	604	{
	605	uint8_t *data = _data, csum;
	606
	607	for (csum = 0; size-- > 0; data++)
	608	csum += *data;
	609
	610	return csum;
	611	}
	612
	613	static int
	614	kwboot_img_patch_hdr(void *img, size_t size)
	615	{
	616	int rc;
	617	bhr_t *hdr;
	618	uint8_t csum;
	619	const size_t hdrsz = sizeof(*hdr);
	620
	621	rc = -1;
	622	hdr = img;
	623
	624	if (size < hdrsz) {
	625	errno = EINVAL;
	626	goto out;
	627	}
	628
	629	csum = kwboot_img_csum8(hdr, hdrsz) - hdr->checkSum;
	630	if (csum != hdr->checkSum) {
	631	errno = EINVAL;
	632	goto out;
	633	}
	634
635	if (hdr->blockid == IBR_HDR_UART_ID) {
636	rc = 0;
637	goto out;
638	}
639
640	hdr->blockid = IBR_HDR_UART_ID;
641
642	hdr->nandeccmode = IBR_HDR_ECC_DISABLED;
643	hdr->nandpagesize = 0;
644
645	hdr->srcaddr = hdr->ext
646	? sizeof(struct kwb_header)
647	: sizeof(*hdr);
648
649	hdr->checkSum = kwboot_img_csum8(hdr, hdrsz) - csum;
650
651	rc = 0;
652	out:
653	return rc;
654	}
655
656	static void
657	kwboot_usage(FILE stream, char progname)
658	{
659	fprintf(stream,
84899e2d SR	660	"Usage: %s [-d \| -a \| -b <image> \| -D <image> ] [ -t ] [-B <baud> ] <TTY>\n",
84899e2d SR	661	progname);
d131ad68	662	fprintf(stream, "\n");
84899e2d SR	663	fprintf(stream,
84899e2d SR	664	" -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
d131ad68	665	fprintf(stream, " -p: patch <image> to type 0x69 (uart boot)\n");
84899e2d SR	666	fprintf(stream,
	667	" -D <image>: boot <image> without preamble (Dove)\n");
	668	fprintf(stream, " -d: enter debug mode\n");
	669	fprintf(stream, " -a: use timings for Armada XP\n");
d131ad68 LP	670	fprintf(stream, "\n");
	671	fprintf(stream, " -t: mini terminal\n");
	672	fprintf(stream, "\n");
	673	fprintf(stream, " -B <baud>: set baud rate\n");
	674	fprintf(stream, "\n");
	675	}
	676
	677	int
	678	main(int argc, char **argv)
	679	{
	680	const char ttypath, imgpath;
	681	int rv, rc, tty, term, prot, patch;
	682	void *bootmsg;
84899e2d	683	void *debugmsg;
d131ad68 LP	684	void *img;
	685	size_t size;
	686	speed_t speed;
	687
	688	rv = 1;
	689	tty = -1;
	690	bootmsg = NULL;
84899e2d	691	debugmsg = NULL;
d131ad68 LP	692	imgpath = NULL;
	693	img = NULL;
	694	term = 0;
	695	patch = 0;
	696	size = 0;
	697	speed = B115200;
	698
	699	kwboot_verbose = isatty(STDOUT_FILENO);
	700
	701	do {
84899e2d	702	int c = getopt(argc, argv, "hb:ptaB:dD:");
d131ad68 LP	703	if (c < 0)
	704	break;
	705
	706	switch (c) {
	707	case 'b':
	708	bootmsg = kwboot_msg_boot;
	709	imgpath = optarg;
	710	break;
	711
84899e2d SR	712	case 'D':
	713	bootmsg = NULL;
	714	imgpath = optarg;
	715	break;
	716
	717	case 'd':
	718	debugmsg = kwboot_msg_debug;
	719	break;
	720
d131ad68 LP	721	case 'p':
	722	patch = 1;
	723	break;
	724
	725	case 't':
	726	term = 1;
	727	break;
	728
84899e2d SR	729	case 'a':
	730	msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
	731	msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
	732	break;
	733
d131ad68 LP	734	case 'B':
	735	speed = kwboot_tty_speed(atoi(optarg));
	736	if (speed == -1)
	737	goto usage;
	738	break;
	739
	740	case 'h':
	741	rv = 0;
	742	default:
	743	goto usage;
	744	}
	745	} while (1);
	746
84899e2d	747	if (!bootmsg && !term && !debugmsg)
d131ad68 LP	748	goto usage;
	749
	750	if (patch && !imgpath)
	751	goto usage;
	752
	753	if (argc - optind < 1)
	754	goto usage;
	755
	756	ttypath = argv[optind++];
	757
	758	tty = kwboot_open_tty(ttypath, speed);
	759	if (tty < 0) {
	760	perror(ttypath);
	761	goto out;
	762	}
	763
	764	if (imgpath) {
	765	prot = PROT_READ \| (patch ? PROT_WRITE : 0);
	766
	767	img = kwboot_mmap_image(imgpath, &size, prot);
	768	if (!img) {
	769	perror(imgpath);
	770	goto out;
	771	}
	772	}
	773
	774	if (patch) {
	775	rc = kwboot_img_patch_hdr(img, size);
	776	if (rc) {
	777	fprintf(stderr, "%s: Invalid image.\n", imgpath);
	778	goto out;
	779	}
	780	}
	781
84899e2d SR	782	if (debugmsg) {
	783	rc = kwboot_debugmsg(tty, debugmsg);
	784	if (rc) {
	785	perror("debugmsg");
	786	goto out;
	787	}
	788	} else {
d131ad68 LP	789	rc = kwboot_bootmsg(tty, bootmsg);
	790	if (rc) {
	791	perror("bootmsg");
	792	goto out;
	793	}
	794	}
	795
	796	if (img) {
	797	rc = kwboot_xmodem(tty, img, size);
	798	if (rc) {
	799	perror("xmodem");
	800	goto out;
	801	}
	802	}
	803
	804	if (term) {
	805	rc = kwboot_terminal(tty);
	806	if (rc && !(errno == EINTR)) {
	807	perror("terminal");
	808	goto out;
	809	}
	810	}
	811
	812	rv = 0;
	813	out:
	814	if (tty >= 0)
	815	close(tty);
	816
	817	if (img)
	818	munmap(img, size);
	819
	820	return rv;
	821
	822	usage:
	823	kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
	824	goto out;
	825	}