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

/*
 * Boot a Marvell Kirkwood SoC, with Xmodem over UART0.
 *
 * (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
};

#define KWBOOT_MSG_REQ_DELAY	10 /* ms */
#define KWBOOT_MSG_RSP_TIMEO	50 /* 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 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;

	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;

	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(KWBOOT_MSG_REQ_DELAY * 1000);
			continue;
		}

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

		kwboot_spinner();

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

	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->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;

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

		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;
	fd = -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 -b <image> [ -p ] [ -t ] "
		"[-B <baud> ] <TTY>\n", progname);
	fprintf(stream, "\n");
	fprintf(stream, "  -b <image>: boot <image>\n");
	fprintf(stream, "  -p: patch <image> to type 0x69 (uart boot)\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 *img;
	size_t size;
	speed_t speed;

	rv = 1;
	tty = -1;
	bootmsg = 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:ptB:");
		if (c < 0)
			break;

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

		case 'p':
			patch = 1;
			break;

		case 't':
			term = 1;
			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)
		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 (bootmsg) {
		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 LP	1	/*
	2	* Boot a Marvell Kirkwood SoC, with Xmodem over UART0.
	3	*
	4	* (c) 2012 Daniel Stodden <[email protected]>
	5	*
	6	* References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
	7	* Integrated Controller: Functional Specifications" December 2,
	8	* 2008. Chapter 24.2 "BootROM Firmware".
	9	*/
	10
	11	#include <stdlib.h>
	12	#include <stdio.h>
	13	#include <string.h>
	14	#include <stdarg.h>
	15	#include <libgen.h>
	16	#include <fcntl.h>
	17	#include <errno.h>
	18	#include <unistd.h>
	19	#include <stdint.h>
	20	#include <termios.h>
	21	#include <sys/mman.h>
	22	#include <sys/stat.h>
	23
	24	#include "kwbimage.h"
	25
	26	#ifdef __GNUC__
	27	#define PACKED __attribute((packed))
	28	#else
	29	#define PACKED
	30	#endif
	31
	32	/*
	33	* Marvell BootROM UART Sensing
	34	*/
	35
	36	static unsigned char kwboot_msg_boot[] = {
	37	0xBB, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77
	38	};
	39
	40	#define KWBOOT_MSG_REQ_DELAY 10 /* ms */
	41	#define KWBOOT_MSG_RSP_TIMEO 50 /* ms */
	42
	43	/*
	44	* Xmodem Transfers
	45	*/
	46
	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 */
	52
	53	struct kwboot_block {
	54	uint8_t soh;
	55	uint8_t pnum;
	56	uint8_t _pnum;
	57	uint8_t data[128];
	58	uint8_t csum;
	59	} PACKED;
	60
	61	#define KWBOOT_BLK_RSP_TIMEO 1000 /* ms */
	62
	63	static int kwboot_verbose;
	64
65	static void
66	kwboot_printv(const char *fmt, ...)
67	{
68	va_list ap;
69
70	if (kwboot_verbose) {
71	va_start(ap, fmt);
72	vprintf(fmt, ap);
73	va_end(ap);
74	fflush(stdout);
75	}
76	}
77
78	static void
79	__spinner(void)
80	{
81	const char seq[] = { '-', '\\', '\|', '/' };
82	const int div = 8;
83	static int state, bs;
84
85	if (state % div == 0) {
86	fputc(bs, stdout);
87	fputc(seq[state / div % sizeof(seq)], stdout);
88	fflush(stdout);
89	}
90
91	bs = '\b';
92	state++;
93	}
94
95	static void
96	kwboot_spinner(void)
97	{
98	if (kwboot_verbose)
99	__spinner();
100	}
101
102	static void
103	__progress(int pct, char c)
104	{
105	const int width = 70;
106	static const char *nl = "";
107	static int pos;
108
109	if (pos % width == 0)
110	printf("%s%3d %% [", nl, pct);
111
112	fputc(c, stdout);
113
114	nl = "]\n";
115	pos++;
116
117	if (pct == 100) {
118	while (pos++ < width)
119	fputc(' ', stdout);
120	fputs(nl, stdout);
121	}
122
123	fflush(stdout);
124
125	}
126
127	static void
128	kwboot_progress(int _pct, char c)
129	{
130	static int pct;
131
132	if (_pct != -1)
133	pct = _pct;
134
135	if (kwboot_verbose)
136	__progress(pct, c);
137	}
138
139	static int
140	kwboot_tty_recv(int fd, void *buf, size_t len, int timeo)
141	{
142	int rc, nfds;
143	fd_set rfds;
144	struct timeval tv;
145	ssize_t n;
146
147	rc = -1;
148
149	FD_ZERO(&rfds);
150	FD_SET(fd, &rfds);
151
152	tv.tv_sec = 0;
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;
157	}
158
159	do {
160	nfds = select(fd + 1, &rfds, NULL, NULL, &tv);
161	if (nfds < 0)
162	goto out;
163	if (!nfds) {
164	errno = ETIMEDOUT;
165	goto out;
166	}
167
168	n = read(fd, buf, len);
169	if (n < 0)
170	goto out;
171
172	buf = (char *)buf + n;
173	len -= n;
174	} while (len > 0);
175
176	rc = 0;
177	out:
178	return rc;
179	}
180
181	static int
182	kwboot_tty_send(int fd, const void *buf, size_t len)
183	{
184	int rc;
185	ssize_t n;
186
187	rc = -1;
188
189	do {
190	n = write(fd, buf, len);
191	if (n < 0)
192	goto out;
193
194	buf = (char *)buf + n;
195	len -= n;
196	} while (len > 0);
197
198	rc = tcdrain(fd);
199	out:
200	return rc;
201	}
202
203	static int
204	kwboot_tty_send_char(int fd, unsigned char c)
205	{
206	return kwboot_tty_send(fd, &c, 1);
207	}
208
209	static speed_t
210	kwboot_tty_speed(int baudrate)
211	{
212	switch (baudrate) {
213	case 115200:
214	return B115200;
215	case 57600:
216	return B57600;
217	case 38400:
218	return B38400;
219	case 19200:
220	return B19200;
221	case 9600:
222	return B9600;
223	}
224
225	return -1;
226	}
227
228	static int
229	kwboot_open_tty(const char *path, speed_t speed)
230	{
231	int rc, fd;
232	struct termios tio;
233
234	rc = -1;
235
236	fd = open(path, O_RDWR\|O_NOCTTY\|O_NDELAY);
237	if (fd < 0)
238	goto out;
239
240	memset(&tio, 0, sizeof(tio));
241
242	tio.c_iflag = 0;
243	tio.c_cflag = CREAD\|CLOCAL\|CS8;
244
245	tio.c_cc[VMIN] = 1;
246	tio.c_cc[VTIME] = 10;
247
248	cfsetospeed(&tio, speed);
249	cfsetispeed(&tio, speed);
250
251	rc = tcsetattr(fd, TCSANOW, &tio);
252	if (rc)
253	goto out;
254
255	rc = fd;
256	out:
257	if (rc < 0) {
258	if (fd >= 0)
259	close(fd);
260	}
261
262	return rc;
263	}
264
265	static int
266	kwboot_bootmsg(int tty, void *msg)
267	{
268	int rc;
269	char c;
270
271	kwboot_printv("Sending boot message. Please reboot the target...");
272
273	do {
274	rc = tcflush(tty, TCIOFLUSH);
275	if (rc)
276	break;
277
278	rc = kwboot_tty_send(tty, msg, 8);
279	if (rc) {
280	usleep(KWBOOT_MSG_REQ_DELAY * 1000);
281	continue;
282	}
283
284	rc = kwboot_tty_recv(tty, &c, 1, KWBOOT_MSG_RSP_TIMEO);
285
286	kwboot_spinner();
287
288	} while (rc \|\| c != NAK);
289
290	kwboot_printv("\n");
291
292	return rc;
293	}
294
295	static int
296	kwboot_xm_makeblock(struct kwboot_block block, const void data,
297	size_t size, int pnum)
298	{
299	const size_t blksz = sizeof(block->data);
300	size_t n;
301	int i;
302
303	block->pnum = pnum;
304	block->_pnum = ~block->pnum;
305
306	n = size < blksz ? size : blksz;
307	memcpy(&block->data[0], data, n);
308	memset(&block->data[n], 0, blksz - n);
309
310	block->csum = 0;
311	for (i = 0; i < n; i++)
312	block->csum += block->data[i];
313
314	return n;
315	}
316
317	static int
318	kwboot_xm_sendblock(int fd, struct kwboot_block *block)
319	{
320	int rc, retries;
321	char c;
322
323	retries = 16;
324	do {
325	rc = kwboot_tty_send(fd, block, sizeof(*block));
326	if (rc)
327	break;
328
329	rc = kwboot_tty_recv(fd, &c, 1, KWBOOT_BLK_RSP_TIMEO);
330	if (rc)
331	break;
332
333	if (c != ACK)
334	kwboot_progress(-1, '+');
335
336	} while (c == NAK && retries-- > 0);
337
338	rc = -1;
339
340	switch (c) {
341	case ACK:
342	rc = 0;
343	break;
344	case NAK:
345	errno = EBADMSG;
346	break;
347	case CAN:
348	errno = ECANCELED;
349	break;
350	default:
351	errno = EPROTO;
352	break;
353	}
354
355	return rc;
356	}
357
358	static int
359	kwboot_xmodem(int tty, const void *_data, size_t size)
360	{
361	const uint8_t *data = _data;
362	int rc, pnum, N, err;
363
364	pnum = 1;
365	N = 0;
366
367	kwboot_printv("Sending boot image...\n");
368
369	do {
370	struct kwboot_block block;
371	int n;
372
373	n = kwboot_xm_makeblock(&block,
374	data + N, size - N,
375	pnum++);
376	if (n < 0)
377	goto can;
378
379	if (!n)
380	break;
381
382	rc = kwboot_xm_sendblock(tty, &block);
383	if (rc)
384	goto out;
385
386	N += n;
387	kwboot_progress(N * 100 / size, '.');
388	} while (1);
389
390	rc = kwboot_tty_send_char(tty, EOT);
391
392	out:
393	return rc;
394
395	can:
396	err = errno;
397	kwboot_tty_send_char(tty, CAN);
398	errno = err;
399	goto out;
400	}
401
402	static int
403	kwboot_term_pipe(int in, int out, char quit, int s)
404	{
405	ssize_t nin, nout;
406	char _buf[128], *buf = _buf;
407
408	nin = read(in, buf, sizeof(buf));
409	if (nin < 0)
410	return -1;
411
412	if (quit) {
413	int i;
414
415	for (i = 0; i < nin; i++) {
416	if (buf == quit[s]) {
417	(*s)++;
418	if (!quit[*s])
419	return 0;
420	buf++;
421	nin--;
422	} else
423	while (*s > 0) {
424	nout = write(out, quit, *s);
425	if (nout <= 0)
426	return -1;
427	(*s) -= nout;
428	}
429	}
430	}
431
432	while (nin > 0) {
433	nout = write(out, buf, nin);
434	if (nout <= 0)
435	return -1;
436	nin -= nout;
437	}
438
439	return 0;
440	}
441
442	static int
443	kwboot_terminal(int tty)
444	{
445	int rc, in, s;
446	char *quit = "\34c";
447	struct termios otio, tio;
448
449	rc = -1;
450
451	in = STDIN_FILENO;
452	if (isatty(in)) {
453	rc = tcgetattr(in, &otio);
454	if (!rc) {
455	tio = otio;
456	cfmakeraw(&tio);
457	rc = tcsetattr(in, TCSANOW, &tio);
458	}
459	if (rc) {
460	perror("tcsetattr");
461	goto out;
462	}
463
464	kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
465	quit[0]\|0100, quit[1]);
466	} else
467	in = -1;
468
469	rc = 0;
470	s = 0;
471
472	do {
473	fd_set rfds;
474	int nfds = 0;
475
476	FD_SET(tty, &rfds);
477	nfds = nfds < tty ? tty : nfds;
478
479	if (in >= 0) {
480	FD_SET(in, &rfds);
481	nfds = nfds < in ? in : nfds;
482	}
483
484	nfds = select(nfds + 1, &rfds, NULL, NULL, NULL);
485	if (nfds < 0)
486	break;
487
488	if (FD_ISSET(tty, &rfds)) {
489	rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
490	if (rc)
491	break;
492	}
493
494	if (FD_ISSET(in, &rfds)) {
495	rc = kwboot_term_pipe(in, tty, quit, &s);
496	if (rc)
497	break;
498	}
499	} while (quit[s] != 0);
500
501	tcsetattr(in, TCSANOW, &otio);
502	out:
503	return rc;
504	}
505
506	static void *
507	kwboot_mmap_image(const char path, size_t size, int prot)
508	{
509	int rc, fd, flags;
510	struct stat st;
511	void *img;
512
513	rc = -1;
514	fd = -1;
515	img = NULL;
516
517	fd = open(path, O_RDONLY);
518	if (fd < 0)
519	goto out;
520
521	rc = fstat(fd, &st);
522	if (rc)
523	goto out;
524
525	flags = (prot & PROT_WRITE) ? MAP_PRIVATE : MAP_SHARED;
526
527	img = mmap(NULL, st.st_size, prot, flags, fd, 0);
528	if (img == MAP_FAILED) {
529	img = NULL;
530	goto out;
531	}
532
533	rc = 0;
534	*size = st.st_size;
535	out:
536	if (rc && img) {
537	munmap(img, st.st_size);
538	img = NULL;
539	}
540	if (fd >= 0)
541	close(fd);
542
543	return img;
544	}
545
546	static uint8_t
547	kwboot_img_csum8(void *_data, size_t size)
548	{
549	uint8_t *data = _data, csum;
550
551	for (csum = 0; size-- > 0; data++)
552	csum += *data;
553
554	return csum;
555	}
556
557	static int
558	kwboot_img_patch_hdr(void *img, size_t size)
559	{
560	int rc;
561	bhr_t *hdr;
562	uint8_t csum;
563	const size_t hdrsz = sizeof(*hdr);
564
565	rc = -1;
566	hdr = img;
567
568	if (size < hdrsz) {
569	errno = EINVAL;
570	goto out;
571	}
572
573	csum = kwboot_img_csum8(hdr, hdrsz) - hdr->checkSum;
574	if (csum != hdr->checkSum) {
575	errno = EINVAL;
576	goto out;
577	}
578
579	if (hdr->blockid == IBR_HDR_UART_ID) {
580	rc = 0;
581	goto out;
582	}
583
584	hdr->blockid = IBR_HDR_UART_ID;
585
586	hdr->nandeccmode = IBR_HDR_ECC_DISABLED;
587	hdr->nandpagesize = 0;
588
589	hdr->srcaddr = hdr->ext
590	? sizeof(struct kwb_header)
591	: sizeof(*hdr);
592
593	hdr->checkSum = kwboot_img_csum8(hdr, hdrsz) - csum;
594
595	rc = 0;
596	out:
597	return rc;
598	}
599
600	static void
601	kwboot_usage(FILE stream, char progname)
602	{
603	fprintf(stream,
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");
614	}
615
616	int
617	main(int argc, char **argv)
618	{
619	const char ttypath, imgpath;
620	int rv, rc, tty, term, prot, patch;
621	void *bootmsg;
622	void *img;
623	size_t size;
624	speed_t speed;
625
626	rv = 1;
627	tty = -1;
628	bootmsg = NULL;
629	imgpath = NULL;
630	img = NULL;
631	term = 0;
632	patch = 0;
633	size = 0;
634	speed = B115200;
635
636	kwboot_verbose = isatty(STDOUT_FILENO);
637
638	do {
639	int c = getopt(argc, argv, "hb:ptB:");
640	if (c < 0)
641	break;
642
643	switch (c) {
644	case 'b':
645	bootmsg = kwboot_msg_boot;
646	imgpath = optarg;
647	break;
648
649	case 'p':
650	patch = 1;
651	break;
652
653	case 't':
654	term = 1;
655	break;
656
657	case 'B':
658	speed = kwboot_tty_speed(atoi(optarg));
659	if (speed == -1)
660	goto usage;
661	break;
662
663	case 'h':
664	rv = 0;
665	default:
666	goto usage;
667	}
668	} while (1);
669
670	if (!bootmsg && !term)
671	goto usage;
672
673	if (patch && !imgpath)
674	goto usage;
675
676	if (argc - optind < 1)
677	goto usage;
678
679	ttypath = argv[optind++];
680
681	tty = kwboot_open_tty(ttypath, speed);
682	if (tty < 0) {
683	perror(ttypath);
684	goto out;
685	}
686
687	if (imgpath) {
688	prot = PROT_READ \| (patch ? PROT_WRITE : 0);
689
690	img = kwboot_mmap_image(imgpath, &size, prot);
691	if (!img) {
692	perror(imgpath);
693	goto out;
694	}
695	}
696
697	if (patch) {
698	rc = kwboot_img_patch_hdr(img, size);
699	if (rc) {
700	fprintf(stderr, "%s: Invalid image.\n", imgpath);
701	goto out;
702	}
703	}
704
705	if (bootmsg) {
706	rc = kwboot_bootmsg(tty, bootmsg);
707	if (rc) {
708	perror("bootmsg");
709	goto out;
710	}
711	}
712
713	if (img) {
714	rc = kwboot_xmodem(tty, img, size);
715	if (rc) {
716	perror("xmodem");
717	goto out;
718	}
719	}
720
721	if (term) {
722	rc = kwboot_terminal(tty);
723	if (rc && !(errno == EINTR)) {
724	perror("terminal");
725	goto out;
726	}
727	}
728
729	rv = 0;
730	out:
731	if (tty >= 0)
732	close(tty);
733
734	if (img)
735	munmap(img, size);
736
737	return rv;
738
739	usage:
740	kwboot_usage(rv ? stderr : stdout, basename(argv[0]));
741	goto out;
742	}