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-rw-r--r--tools/kwboot.c500
1 files changed, 413 insertions, 87 deletions
diff --git a/tools/kwboot.c b/tools/kwboot.c
index 68c0ef1f1b0..9f2dd2de4ef 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -1,15 +1,40 @@
/*
* Boot a Marvell SoC, with Xmodem over UART0.
- * supports Kirkwood, Dove, Armada 370, Armada XP, Armada 375, Armada 38x and
- * Armada 39x
+ * supports Kirkwood, Dove, Avanta, Armada 370, Armada XP, Armada 375,
+ * Armada 38x and Armada 39x.
*
* (c) 2012 Daniel Stodden <daniel.stodden@gmail.com>
* (c) 2021 Pali Rohár <pali@kernel.org>
* (c) 2021 Marek Behún <marek.behun@nic.cz>
*
- * References: marvell.com, "88F6180, 88F6190, 88F6192, and 88F6281
- * Integrated Controller: Functional Specifications" December 2,
- * 2008. Chapter 24.2 "BootROM Firmware".
+ * References:
+ * - "88F6180, 88F6190, 88F6192, and 88F6281: Integrated Controller: Functional
+ * Specifications" December 2, 2008. Chapter 24.2 "BootROM Firmware".
+ * https://web.archive.org/web/20130730091033/https://www.marvell.com/embedded-processors/kirkwood/assets/FS_88F6180_9x_6281_OpenSource.pdf
+ * - "88AP510: High-Performance SoC with Integrated CPU, 2D/3D Graphics
+ * Processor, and High-Definition Video Decoder: Functional Specifications"
+ * August 3, 2011. Chapter 5 "BootROM Firmware"
+ * https://web.archive.org/web/20120130172443/https://www.marvell.com/application-processors/armada-500/assets/Armada-510-Functional-Spec.pdf
+ * - "88F6710, 88F6707, and 88F6W11: ARMADA(R) 370 SoC: Functional Specifications"
+ * May 26, 2014. Chapter 6 "BootROM Firmware".
+ * https://web.archive.org/web/20140617183701/https://www.marvell.com/embedded-processors/armada-300/assets/ARMADA370-FunctionalSpec-datasheet.pdf
+ * - "MV78230, MV78260, and MV78460: ARMADA(R) XP Family of Highly Integrated
+ * Multi-Core ARMv7 Based SoC Processors: Functional Specifications"
+ * May 29, 2014. Chapter 6 "BootROM Firmware".
+ * https://web.archive.org/web/20180829171131/https://www.marvell.com/embedded-processors/armada-xp/assets/ARMADA-XP-Functional-SpecDatasheet.pdf
+ * - "ARMADA(R) 375 Value-Performance Dual Core CPU System on Chip: Functional
+ * Specifications" Doc. No. MV-S109377-00, Rev. A. September 18, 2013.
+ * Chapter 7 "Boot Sequence"
+ * CONFIDENTIAL, no public documentation available
+ * - "88F6810, 88F6811, 88F6821, 88F6W21, 88F6820, and 88F6828: ARMADA(R) 38x
+ * Family High-Performance Single/Dual CPU System on Chip: Functional
+ * Specifications" Doc. No. MV-S109094-00, Rev. C. August 2, 2015.
+ * Chapter 7 "Boot Flow"
+ * CONFIDENTIAL, no public documentation available
+ * - "88F6920, 88F6925 and 88F6928: ARMADA(R) 39x High-Performance Dual Core CPU
+ * System on Chip Functional Specifications" Doc. No. MV-S109896-00, Rev. B.
+ * December 22, 2015. Chapter 7 "Boot Flow"
+ * CONFIDENTIAL, no public documentation available
*/
#include "kwbimage.h"
@@ -28,6 +53,7 @@
#include <stdint.h>
#include <time.h>
#include <sys/stat.h>
+#include <pthread.h>
#ifdef __linux__
#include "termios_linux.h"
@@ -36,6 +62,13 @@
#endif
/*
+ * These functions are in <term.h> header file, but this header file conflicts
+ * with "termios_linux.h" header file. So declare these functions manually.
+ */
+extern int setupterm(const char *, int, int *);
+extern char *tigetstr(const char *);
+
+/*
* Marvell BootROM UART Sensing
*/
@@ -48,11 +81,9 @@ static unsigned char kwboot_msg_debug[] = {
};
/* 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 */
/*
@@ -285,7 +316,6 @@ static const char kwb_baud_magic[16] = "$baudratechange";
static int kwboot_verbose;
-static int msg_req_delay = KWBOOT_MSG_REQ_DELAY;
static int msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO;
static int blk_rsp_timeo = KWBOOT_BLK_RSP_TIMEO;
@@ -720,42 +750,120 @@ out:
return rc;
}
+static void *
+kwboot_msg_write_handler(void *arg)
+{
+ int tty = *(int *)((void **)arg)[0];
+ const void *msg = ((void **)arg)[1];
+ int rsp_timeo = msg_rsp_timeo;
+ int i, dummy_oldtype;
+
+ /* allow to cancel this thread at any time */
+ pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &dummy_oldtype);
+
+ while (1) {
+ /* write 128 samples of message pattern into the output queue without waiting */
+ for (i = 0; i < 128; i++) {
+ if (kwboot_tty_send(tty, msg, 8, 1) < 0) {
+ perror("\nFailed to send message pattern");
+ exit(1);
+ }
+ }
+ /* wait until output queue is transmitted and then make pause */
+ if (tcdrain(tty) < 0) {
+ perror("\nFailed to send message pattern");
+ exit(1);
+ }
+ /* BootROM requires pause on UART after it detects message pattern */
+ usleep(rsp_timeo * 1000);
+ }
+}
+
static int
-kwboot_bootmsg(int tty, void *msg)
+kwboot_msg_start_thread(pthread_t *thread, int *tty, void *msg)
{
- struct kwboot_block block;
+ void *arg[2];
int rc;
- char c;
- int count;
- if (msg == NULL)
- kwboot_printv("Please reboot the target into UART boot mode...");
- else
- kwboot_printv("Sending boot message. Please reboot the target...");
+ arg[0] = tty;
+ arg[1] = msg;
+ rc = pthread_create(thread, NULL, kwboot_msg_write_handler, arg);
+ if (rc) {
+ errno = rc;
+ return -1;
+ }
- do {
- rc = tcflush(tty, TCIOFLUSH);
- if (rc)
- break;
+ return 0;
+}
- for (count = 0; count < 128; count++) {
- rc = kwboot_tty_send(tty, msg, 8, 0);
- if (rc) {
- usleep(msg_req_delay * 1000);
- continue;
- }
- }
+static int
+kwboot_msg_stop_thread(pthread_t thread)
+{
+ int rc;
- rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
+ rc = pthread_cancel(thread);
+ if (rc) {
+ errno = rc;
+ return -1;
+ }
+
+ rc = pthread_join(thread, NULL);
+ if (rc) {
+ errno = rc;
+ return -1;
+ }
+
+ return 0;
+}
+static int
+kwboot_bootmsg(int tty)
+{
+ struct kwboot_block block;
+ pthread_t write_thread;
+ int rc, err;
+ char c;
+
+ /* flush input and output queue */
+ tcflush(tty, TCIOFLUSH);
+
+ rc = kwboot_msg_start_thread(&write_thread, &tty, kwboot_msg_boot);
+ if (rc) {
+ perror("Failed to start write thread");
+ return rc;
+ }
+
+ kwboot_printv("Sending boot message. Please reboot the target...");
+
+ err = 0;
+ while (1) {
kwboot_spinner();
- } while (rc || c != NAK);
+ rc = kwboot_tty_recv(tty, &c, 1, msg_rsp_timeo);
+ if (rc && errno == ETIMEDOUT) {
+ continue;
+ } else if (rc) {
+ err = errno;
+ break;
+ }
+
+ if (c == NAK)
+ break;
+ }
kwboot_printv("\n");
- if (rc)
+ rc = kwboot_msg_stop_thread(write_thread);
+ if (rc) {
+ perror("Failed to stop write thread");
return rc;
+ }
+
+ if (err) {
+ errno = err;
+ perror("Failed to read response for boot message pattern");
+ return -1;
+ }
/*
* At this stage we have sent more boot message patterns and BootROM
@@ -772,11 +880,19 @@ kwboot_bootmsg(int tty, void *msg)
*/
/* flush output queue with remaining boot message patterns */
- tcflush(tty, TCOFLUSH);
+ rc = tcflush(tty, TCOFLUSH);
+ if (rc) {
+ perror("Failed to flush output queue");
+ return rc;
+ }
/* send one xmodem packet with 0xff bytes to force BootROM to re-sync */
memset(&block, 0xff, sizeof(block));
- kwboot_tty_send(tty, &block, sizeof(block), 0);
+ rc = kwboot_tty_send(tty, &block, sizeof(block), 0);
+ if (rc) {
+ perror("Failed to send sync sequence");
+ return rc;
+ }
/*
* Sending 132 bytes via 115200B/8-N-1 takes 11.45 ms, reading 132 bytes
@@ -785,40 +901,151 @@ kwboot_bootmsg(int tty, void *msg)
usleep(30 * 1000);
/* flush remaining NAK replies from input queue */
- tcflush(tty, TCIFLUSH);
+ rc = tcflush(tty, TCIFLUSH);
+ if (rc) {
+ perror("Failed to flush input queue");
+ return rc;
+ }
return 0;
}
static int
-kwboot_debugmsg(int tty, void *msg)
+kwboot_debugmsg(int tty)
{
- int rc;
+ unsigned char buf[8192];
+ pthread_t write_thread;
+ int rc, err, i, pos;
+ size_t off;
- kwboot_printv("Sending debug message. Please reboot the target...");
+ /* flush input and output queue */
+ tcflush(tty, TCIOFLUSH);
- do {
- char buf[16];
+ rc = kwboot_msg_start_thread(&write_thread, &tty, kwboot_msg_debug);
+ if (rc) {
+ perror("Failed to start write thread");
+ return rc;
+ }
- rc = tcflush(tty, TCIOFLUSH);
- if (rc)
- break;
+ kwboot_printv("Sending debug message. Please reboot the target...");
+ kwboot_spinner();
- rc = kwboot_tty_send(tty, msg, 8, 0);
- if (rc) {
- usleep(msg_req_delay * 1000);
+ err = 0;
+ off = 0;
+ while (1) {
+ /* Read immediately all bytes in queue without waiting */
+ rc = read(tty, buf + off, sizeof(buf) - off);
+ if ((rc < 0 && errno == EINTR) || rc == 0) {
continue;
+ } else if (rc < 0) {
+ err = errno;
+ break;
}
-
- rc = kwboot_tty_recv(tty, buf, 16, msg_rsp_timeo);
+ off += rc - 1;
kwboot_spinner();
- } while (rc);
+ /*
+ * Check if we received at least 4 debug message patterns
+ * (console echo from BootROM) in cyclic buffer
+ */
+
+ for (pos = 0; pos < sizeof(kwboot_msg_debug); pos++)
+ if (buf[off] == kwboot_msg_debug[(pos + off) % sizeof(kwboot_msg_debug)])
+ break;
+
+ for (i = off; i >= 0; i--)
+ if (buf[i] != kwboot_msg_debug[(pos + i) % sizeof(kwboot_msg_debug)])
+ break;
+
+ off -= i;
+
+ if (off >= 4 * sizeof(kwboot_msg_debug))
+ break;
+
+ /* If not move valid suffix from end of the buffer to the beginning of buffer */
+ memmove(buf, buf + i + 1, off);
+ }
kwboot_printv("\n");
- return rc;
+ rc = kwboot_msg_stop_thread(write_thread);
+ if (rc) {
+ perror("Failed to stop write thread");
+ return rc;
+ }
+
+ if (err) {
+ errno = err;
+ perror("Failed to read response for debug message pattern");
+ return -1;
+ }
+
+ /* flush output queue with remaining debug message patterns */
+ rc = tcflush(tty, TCOFLUSH);
+ if (rc) {
+ perror("Failed to flush output queue");
+ return rc;
+ }
+
+ kwboot_printv("Clearing input buffer...\n");
+
+ /*
+ * Wait until BootROM transmit all remaining echo characters.
+ * Experimentally it was measured that for Armada 385 BootROM
+ * it is required to wait at least 0.415s. So wait 0.5s.
+ */
+ usleep(500 * 1000);
+
+ /*
+ * In off variable is stored number of characters received after the
+ * successful detection of echo reply. So these characters are console
+ * echo for other following debug message patterns. BootROM may have in
+ * its output queue other echo characters which were being transmitting
+ * before above sleep call. So read remaining number of echo characters
+ * sent by the BootROM now.
+ */
+ while ((rc = kwboot_tty_recv(tty, &buf[0], 1, 0)) == 0)
+ off++;
+ if (errno != ETIMEDOUT) {
+ perror("Failed to read response");
+ return rc;
+ }
+
+ /*
+ * Clear every echo character set by the BootROM by backspace byte.
+ * This is required prior writing any command to the BootROM debug
+ * because BootROM command line buffer has limited size. If length
+ * of the command is larger than buffer size then it looks like
+ * that Armada 385 BootROM crashes after sending ENTER. So erase it.
+ * Experimentally it was measured that for Armada 385 BootROM it is
+ * required to send at least 3 backspace bytes for one echo character.
+ * This is unknown why. But lets do it.
+ */
+ off *= 3;
+ memset(buf, '\x08', sizeof(buf));
+ while (off > sizeof(buf)) {
+ rc = kwboot_tty_send(tty, buf, sizeof(buf), 1);
+ if (rc) {
+ perror("Failed to send clear sequence");
+ return rc;
+ }
+ off -= sizeof(buf);
+ }
+ rc = kwboot_tty_send(tty, buf, off, 0);
+ if (rc) {
+ perror("Failed to send clear sequence");
+ return rc;
+ }
+
+ usleep(msg_rsp_timeo * 1000);
+ rc = tcflush(tty, TCIFLUSH);
+ if (rc) {
+ perror("Failed to flush input queue");
+ return rc;
+ }
+
+ return 0;
}
static size_t
@@ -1181,37 +1408,84 @@ kwboot_xmodem(int tty, const void *_img, size_t size, int baudrate)
}
static int
-kwboot_term_pipe(int in, int out, const char *quit, int *s)
+kwboot_term_pipe(int in, int out, const char *quit, int *s, const char *kbs, int *k)
{
char buf[128];
- ssize_t nin;
+ ssize_t nin, noff;
nin = read(in, buf, sizeof(buf));
if (nin <= 0)
return -1;
- if (quit) {
+ noff = 0;
+
+ if (quit || kbs) {
int i;
for (i = 0; i < nin; i++) {
- if (buf[i] == quit[*s]) {
+ if ((quit || kbs) &&
+ (!quit || buf[i] != quit[*s]) &&
+ (!kbs || buf[i] != kbs[*k])) {
+ const char *prefix;
+ int plen;
+
+ if (quit && kbs) {
+ prefix = (*s >= *k) ? quit : kbs;
+ plen = (*s >= *k) ? *s : *k;
+ } else if (quit) {
+ prefix = quit;
+ plen = *s;
+ } else {
+ prefix = kbs;
+ plen = *k;
+ }
+
+ if (plen > i && kwboot_write(out, prefix, plen - i) < 0)
+ return -1;
+ }
+
+ if (quit && buf[i] == quit[*s]) {
(*s)++;
if (!quit[*s]) {
- nin = i - *s;
+ nin = (i > *s) ? (i - *s) : 0;
break;
}
- } else {
- if (*s > i && kwboot_write(out, quit, *s - i) < 0)
- return -1;
+ } else if (quit) {
*s = 0;
}
+
+ if (kbs && buf[i] == kbs[*k]) {
+ (*k)++;
+ if (!kbs[*k]) {
+ if (i > *k + noff &&
+ kwboot_write(out, buf + noff, i - *k - noff) < 0)
+ return -1;
+ /*
+ * Replace backspace key by '\b' (0x08)
+ * byte which is the only recognized
+ * backspace byte by Marvell BootROM.
+ */
+ if (write(out, "\x08", 1) < 0)
+ return -1;
+ noff = i + 1;
+ *k = 0;
+ }
+ } else if (kbs) {
+ *k = 0;
+ }
}
- if (i == nin)
- nin -= *s;
+ if (i == nin) {
+ i = 0;
+ if (quit && i < *s)
+ i = *s;
+ if (kbs && i < *k)
+ i = *k;
+ nin -= (nin > i) ? i : nin;
+ }
}
- if (kwboot_write(out, buf, nin) < 0)
+ if (nin > noff && kwboot_write(out, buf + noff, nin - noff) < 0)
return -1;
return 0;
@@ -1220,7 +1494,8 @@ kwboot_term_pipe(int in, int out, const char *quit, int *s)
static int
kwboot_terminal(int tty)
{
- int rc, in, s;
+ int rc, in, s, k;
+ const char *kbs = NULL;
const char *quit = "\34c";
struct termios otio, tio;
@@ -1239,6 +1514,33 @@ kwboot_terminal(int tty)
goto out;
}
+ /*
+ * Get sequence for backspace key used by the current
+ * terminal. Every occurrence of this sequence will be
+ * replaced by '\b' byte which is the only recognized
+ * backspace byte by Marvell BootROM.
+ *
+ * Note that we cannot read this sequence from termios
+ * c_cc[VERASE] as VERASE is valid only when ICANON is
+ * set in termios c_lflag, which is not case for us.
+ *
+ * Also most terminals do not set termios c_cc[VERASE]
+ * as c_cc[VERASE] can specify only one-byte sequence
+ * and instead let applications to read (possible
+ * multi-byte) sequence for backspace key from "kbs"
+ * terminfo database based on $TERM env variable.
+ *
+ * So read "kbs" from terminfo database via tigetstr()
+ * call after successful setupterm(). Most terminals
+ * use byte 0x7F for backspace key, so replacement with
+ * '\b' is required.
+ */
+ if (setupterm(NULL, STDOUT_FILENO, &rc) == 0) {
+ kbs = tigetstr("kbs");
+ if (kbs == (char *)-1)
+ kbs = NULL;
+ }
+
kwboot_printv("[Type Ctrl-%c + %c to quit]\r\n",
quit[0] | 0100, quit[1]);
} else
@@ -1246,6 +1548,7 @@ kwboot_terminal(int tty)
rc = 0;
s = 0;
+ k = 0;
do {
fd_set rfds;
@@ -1265,13 +1568,13 @@ kwboot_terminal(int tty)
break;
if (FD_ISSET(tty, &rfds)) {
- rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL);
+ rc = kwboot_term_pipe(tty, STDOUT_FILENO, NULL, NULL, NULL, NULL);
if (rc)
break;
}
if (in >= 0 && FD_ISSET(in, &rfds)) {
- rc = kwboot_term_pipe(in, tty, quit, &s);
+ rc = kwboot_term_pipe(in, tty, quit, &s, kbs, &k);
if (rc)
break;
}
@@ -1708,16 +2011,16 @@ static void
kwboot_usage(FILE *stream, char *progname)
{
fprintf(stream,
- "Usage: %s [OPTIONS] [-b <image> | -D <image> ] [-B <baud> ] <TTY>\n",
+ "Usage: %s [OPTIONS] [-b <image> | -D <image> | -b | -d ] [-B <baud> ] [-t] <TTY>\n",
progname);
fprintf(stream, "\n");
fprintf(stream,
- " -b <image>: boot <image> with preamble (Kirkwood, Armada 370/XP)\n");
+ " -b <image>: boot <image> with preamble (Kirkwood, Avanta, Armada 370/XP/375/38x/39x)\n");
fprintf(stream,
" -D <image>: boot <image> without preamble (Dove)\n");
- fprintf(stream, " -d: enter debug mode\n");
+ fprintf(stream, " -b: enter xmodem boot mode\n");
+ fprintf(stream, " -d: enter console debug mode\n");
fprintf(stream, " -a: use timings for Armada XP\n");
- fprintf(stream, " -q <req-delay>: use specific request-delay\n");
fprintf(stream, " -s <resp-timeo>: use specific response-timeout\n");
fprintf(stream,
" -o <block-timeo>: use specific xmodem block timeout\n");
@@ -1733,8 +2036,8 @@ main(int argc, char **argv)
{
const char *ttypath, *imgpath;
int rv, rc, tty, term;
- void *bootmsg;
- void *debugmsg;
+ int bootmsg;
+ int debugmsg;
void *img;
size_t size;
size_t after_img_rsv;
@@ -1744,8 +2047,8 @@ main(int argc, char **argv)
rv = 1;
tty = -1;
- bootmsg = NULL;
- debugmsg = NULL;
+ bootmsg = 0;
+ debugmsg = 0;
imgpath = NULL;
img = NULL;
term = 0;
@@ -1767,24 +2070,25 @@ main(int argc, char **argv)
case 'b':
if (imgpath || bootmsg || debugmsg)
goto usage;
- bootmsg = kwboot_msg_boot;
+ bootmsg = 1;
if (prev_optind == optind)
goto usage;
- if (optind < argc - 1 && argv[optind] && argv[optind][0] != '-')
+ /* Option -b could have optional argument which specify image path */
+ if (optind < argc && argv[optind] && argv[optind][0] != '-')
imgpath = argv[optind++];
break;
case 'D':
if (imgpath || bootmsg || debugmsg)
goto usage;
- bootmsg = NULL;
+ bootmsg = 0;
imgpath = optarg;
break;
case 'd':
if (imgpath || bootmsg || debugmsg)
goto usage;
- debugmsg = kwboot_msg_debug;
+ debugmsg = 1;
break;
case 'p':
@@ -1796,12 +2100,11 @@ main(int argc, char **argv)
break;
case 'a':
- msg_req_delay = KWBOOT_MSG_REQ_DELAY_AXP;
msg_rsp_timeo = KWBOOT_MSG_RSP_TIMEO_AXP;
break;
case 'q':
- msg_req_delay = atoi(optarg);
+ /* nop, for backward compatibility */
break;
case 's':
@@ -1826,17 +2129,44 @@ main(int argc, char **argv)
if (!bootmsg && !term && !debugmsg && !imgpath)
goto usage;
- ttypath = argv[optind++];
+ /*
+ * If there is no remaining argument but optional imgpath was parsed
+ * then it means that optional imgpath was eaten by getopt parser.
+ * Reassing imgpath to required ttypath argument.
+ */
+ if (optind == argc && imgpath) {
+ ttypath = imgpath;
+ imgpath = NULL;
+ } else if (optind + 1 == argc) {
+ ttypath = argv[optind];
+ } else {
+ goto usage;
+ }
- if (optind != argc)
+ /* boot and debug message use baudrate 115200 */
+ if (((bootmsg && !imgpath) || debugmsg) && baudrate != 115200) {
+ fprintf(stderr, "Baudrate other than 115200 cannot be used for this operation.\n");
goto usage;
+ }
- tty = kwboot_open_tty(ttypath, imgpath ? 115200 : baudrate);
+ tty = kwboot_open_tty(ttypath, baudrate);
if (tty < 0) {
perror(ttypath);
goto out;
}
+ /*
+ * initial baudrate for image transfer is always 115200,
+ * the change to different baudrate is done only after the header is sent
+ */
+ if (imgpath && baudrate != 115200) {
+ rc = kwboot_tty_change_baudrate(tty, 115200);
+ if (rc) {
+ perror(ttypath);
+ goto out;
+ }
+ }
+
if (baudrate == 115200)
/* do not change baudrate during Xmodem to the same value */
baudrate = 0;
@@ -1866,17 +2196,13 @@ main(int argc, char **argv)
}
if (debugmsg) {
- rc = kwboot_debugmsg(tty, debugmsg);
- if (rc) {
- perror("debugmsg");
+ rc = kwboot_debugmsg(tty);
+ if (rc)
goto out;
- }
} else if (bootmsg) {
- rc = kwboot_bootmsg(tty, bootmsg);
- if (rc) {
- perror("bootmsg");
+ rc = kwboot_bootmsg(tty);
+ if (rc)
goto out;
- }
}
if (img) {
generated by cgit v1.2.3 (git 2.0.4) at 2024-09-29 04:50:01 +0000