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86340a75d2
If you use the "md" command to display lots of memory, it can cause the watchdog to trip. This just pokes it every now and then to be sure it's happy. BUG=none BRANCH=none TEST=manual Print a lot, see that it doesn't timeout: md 0 0x4000 Change-Id: Ic4e2746c07f4fbdf922e87ea3efbe90b88ae08c9 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/251011 Reviewed-by: Randall Spangler <rspangler@chromium.org>
92 lines
1.8 KiB
C
92 lines
1.8 KiB
C
/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* System module for Chrome EC */
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#include "console.h"
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#include "timer.h"
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#include "util.h"
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#include "watchdog.h"
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static int command_mem_dump(int argc, char **argv)
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{
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volatile uint32_t *address;
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uint32_t value, num = 1, i;
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char *e;
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if (argc < 2)
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return EC_ERROR_PARAM_COUNT;
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address = (uint32_t *)(uintptr_t)strtoi(argv[1], &e, 0);
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if (*e)
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return EC_ERROR_PARAM1;
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if (argc >= 3)
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num = strtoi(argv[2], &e, 0);
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for (i = 0; i < num; i++) {
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value = address[i];
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if (0 == (i%4))
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ccprintf("\n%08X: %08x", address+i, value);
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else
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ccprintf(" %08x", value);
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cflush();
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/* Lots of output could take a while.
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* Let other things happen, too */
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if (!(i % 0x100)) {
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watchdog_reload();
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usleep(10 * MSEC);
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}
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}
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ccprintf("\n");
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cflush();
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(md, command_mem_dump,
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"addr [num]",
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"dump num of words (4B) in memory",
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NULL);
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static int command_read_word(int argc, char **argv)
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{
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volatile uint32_t *address;
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uint32_t value;
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char *e;
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if (argc < 2)
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return EC_ERROR_PARAM_COUNT;
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address = (uint32_t *)(uintptr_t)strtoi(argv[1], &e, 0);
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if (*e)
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return EC_ERROR_PARAM1;
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/* Just reading? */
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if (argc < 3) {
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value = *address;
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ccprintf("read 0x%p = 0x%08x\n", address, value);
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return EC_SUCCESS;
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}
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/* Writing! */
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value = strtoi(argv[2], &e, 0);
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if (*e)
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return EC_ERROR_PARAM2;
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ccprintf("write 0x%p = 0x%08x\n", address, value);
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cflush(); /* Flush before writing in case this crashes */
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*address = value;
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return EC_SUCCESS;
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}
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DECLARE_CONSOLE_COMMAND(rw, command_read_word,
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"addr [value]",
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"Read or write a word in memory",
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NULL);
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