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https://github.com/Telecominfraproject/OpenCellular.git
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177dc398d3
Version 1 of EC_CMD_FLASH_WRITE will use as big a write as possible given
the available command parameter space. Falls back to 64 byte writes on old
platforms.
BUG=chrome-os-partner:20571
BRANCH=none
TEST=Copy burn_my_ec onto a link and run it. Write size should be 64 bytes
for the first half of the update (since the old EC doesn't support ver.1
of the write command) and 240 bytes for the second half of the update.
Change-Id: I5900de3a5700d7c82a2e0c3cf9921b7ced1c0343
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/60511
129 lines
2.3 KiB
C
129 lines
2.3 KiB
C
/* Copyright (c) 2013 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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#include <ctype.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "comm-host.h"
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#include "misc_util.h"
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int write_file(const char *filename, const char *buf, int size)
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{
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FILE *f;
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int i;
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/* Write to file */
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f = fopen(filename, "wb");
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if (!f) {
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perror("Error opening output file");
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return -1;
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}
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i = fwrite(buf, 1, size, f);
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fclose(f);
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if (i != size) {
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perror("Error writing to file");
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return -1;
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}
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return 0;
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}
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char *read_file(const char *filename, int *size)
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{
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FILE *f = fopen(filename, "rb");
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char *buf;
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int i;
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if (!f) {
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perror("Error opening input file");
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return NULL;
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}
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fseek(f, 0, SEEK_END);
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*size = ftell(f);
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rewind(f);
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if (*size > 0x100000) {
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fprintf(stderr, "File seems unreasonably large\n");
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fclose(f);
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return NULL;
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}
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buf = (char *)malloc(*size);
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if (!buf) {
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fprintf(stderr, "Unable to allocate buffer.\n");
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fclose(f);
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return NULL;
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}
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printf("Reading %d bytes from %s...\n", *size, filename);
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i = fread(buf, 1, *size, f);
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fclose(f);
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if (i != *size) {
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perror("Error reading file");
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free(buf);
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return NULL;
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}
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return buf;
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}
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int is_string_printable(const char *buf)
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{
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while (*buf) {
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if (!isprint(*buf))
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return 0;
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buf++;
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}
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return 1;
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}
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/**
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* Get the versions of the command supported by the EC.
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*
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* @param cmd Command
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* @param pmask Destination for version mask; will be set to 0 on
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* error.
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* @return 0 if success, <0 if error
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*/
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int ec_get_cmd_versions(int cmd, uint32_t *pmask)
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{
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struct ec_params_get_cmd_versions pver;
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struct ec_response_get_cmd_versions rver;
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int rv;
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*pmask = 0;
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pver.cmd = cmd;
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rv = ec_command(EC_CMD_GET_CMD_VERSIONS, 0, &pver, sizeof(pver),
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&rver, sizeof(rver));
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if (rv < 0)
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return rv;
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*pmask = rver.version_mask;
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return 0;
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}
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/**
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* Return non-zero if the EC supports the command and version
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*
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* @param cmd Command to check
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* @param ver Version to check
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* @return non-zero if command version supported; 0 if not.
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*/
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int ec_cmd_version_supported(int cmd, int ver)
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{
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uint32_t mask = 0;
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if (ec_get_cmd_versions(cmd, &mask))
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return 0;
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return (mask & EC_VER_MASK(ver)) ? 1 : 0;
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}
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