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e28b6184b1
It's really annoying to have to type two different commands. If I want to read a location and then write it and then read it back (which often happens when poking at hardware), then this: rw 0x40570008 rw 0x40570008 14 rw 0x40570008 is much easier to enter than this: rw 0x40570008 ww 0x40570008 14 rw 0x40570008 The "ww" command is still there, if you're really attached to it. BUG=none BRANCH=none TEST=manual Tried the example above. It worked. Change-Id: I2302ed60df3dd3ec2224afa7c32d997bd2468ec1 Signed-off-by: Bill Richardson <wfrichar@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/229660 Reviewed-by: Randall Spangler <rspangler@chromium.org>
77 lines
1.5 KiB
C
77 lines
1.5 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 "util.h"
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static int command_write_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 != 3)
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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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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(ww, command_write_word,
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"addr value",
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"Write a word to 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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