diff options
Diffstat (limited to 'util/ec_flash.c')
| -rw-r--r-- | util/ec_flash.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/util/ec_flash.c b/util/ec_flash.c deleted file mode 100644 index ffa4eca4b7..0000000000 --- a/util/ec_flash.c +++ /dev/null @@ -1,231 +0,0 @@ -/* Copyright 2013 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#include <errno.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#include "comm-host.h" -#include "misc_util.h" -#include "timer.h" - -static const uint32_t ERASE_ASYNC_TIMEOUT = 10 * SECOND; -static const uint32_t ERASE_ASYNC_WAIT = 500 * MSEC; -static const int FLASH_ERASE_BUSY_RV = -EECRESULT - EC_RES_BUSY; - -int ec_flash_read(uint8_t *buf, int offset, int size) -{ - struct ec_params_flash_read p; - int rv; - int i; - - /* Read data in chunks */ - for (i = 0; i < size; i += ec_max_insize) { - p.offset = offset + i; - p.size = MIN(size - i, ec_max_insize); - rv = ec_command(EC_CMD_FLASH_READ, 0, - &p, sizeof(p), ec_inbuf, p.size); - if (rv < 0) { - fprintf(stderr, "Read error at offset %d\n", i); - return rv; - } - memcpy(buf + i, ec_inbuf, p.size); - } - - return 0; -} - -int ec_flash_verify(const uint8_t *buf, int offset, int size) -{ - uint8_t *rbuf = (uint8_t *)(malloc(size)); - int rv; - int i; - - if (!rbuf) { - fprintf(stderr, "Unable to allocate buffer.\n"); - return -1; - } - - rv = ec_flash_read(rbuf, offset, size); - if (rv < 0) { - free(rbuf); - return rv; - } - - for (i = 0; i < size; i++) { - if (buf[i] != rbuf[i]) { - fprintf(stderr, "Mismatch at offset 0x%x: " - "want 0x%02x, got 0x%02x\n", - i, buf[i], rbuf[i]); - free(rbuf); - return -1; - } - } - - free(rbuf); - return 0; -} - -/** - * @param info_response pointer to response that will be filled on success - * @return Zero or positive on success, negative on failure - */ -static int get_flash_info_v2(struct ec_response_flash_info_2 *info_response) -{ - struct ec_params_flash_info_2 info_params = { - /* - * By setting this to zero we indicate that we don't care - * about getting the bank description in the response. - */ - .num_banks_desc = 0 - }; - - return ec_command(EC_CMD_FLASH_INFO, 2, &info_params, - sizeof(info_params), info_response, - sizeof(*info_response)); -} - -/** - * @param info_response pointer to response that will be filled on success - * @return Zero or positive on success, negative on failure - */ -static int get_flash_info_v0(struct ec_response_flash_info *info_response) -{ - return ec_command(EC_CMD_FLASH_INFO, 0, NULL, 0, info_response, - sizeof(*info_response)); -} - -/** - * @return Write size on success, negative on failure - */ -static int get_flash_write_size(void) -{ - int rv = 0; - int write_size; - int flash_info_version = -1; - struct ec_response_flash_info info_response_v0 = { 0 }; - struct ec_response_flash_info_2 info_response_v2 = { 0 }; - - if (ec_cmd_version_supported(EC_CMD_FLASH_INFO, 2)) - flash_info_version = 2; - else if (ec_cmd_version_supported(EC_CMD_FLASH_INFO, 0)) - flash_info_version = 0; - - if (flash_info_version < 0) - return -1; - - if (flash_info_version == 2) { - rv = get_flash_info_v2(&info_response_v2); - write_size = info_response_v2.write_ideal_size; - } else { - rv = get_flash_info_v0(&info_response_v0); - write_size = info_response_v0.write_block_size; - } - - if (rv < 0) - return rv; - - return write_size; -} - -int ec_flash_write(const uint8_t *buf, int offset, int size) -{ - struct ec_params_flash_write *p = - (struct ec_params_flash_write *)ec_outbuf; - int write_size; - int pdata_max_size = (int)(ec_max_outsize - sizeof(*p)); - int step; - int rv; - int i; - - /* - * Determine whether we can use version 1 of the EC_CMD_FLASH_WRITE - * command with more data, or only version 0. - */ - if (!ec_cmd_version_supported(EC_CMD_FLASH_WRITE, EC_VER_FLASH_WRITE)) - pdata_max_size = EC_FLASH_WRITE_VER0_SIZE; - - write_size = get_flash_write_size(); - if (write_size < 0) - return write_size; - - /* - * shouldn't ever happen, but report an error rather than a division - * by zero in the next statement. - */ - if (write_size == 0) - return -1; - - step = (pdata_max_size / write_size) * write_size; - - if (!step) { - fprintf(stderr, "Write block size %d > max param size %d\n", - write_size, pdata_max_size); - return -1; - } - - /* Write data in chunks */ - printf("Write size %d...\n", step); - - for (i = 0; i < size; i += step) { - p->offset = offset + i; - p->size = MIN(size - i, step); - memcpy(p + 1, buf + i, p->size); - rv = ec_command(EC_CMD_FLASH_WRITE, 0, p, sizeof(*p) + p->size, - NULL, 0); - if (rv < 0) { - fprintf(stderr, "Write error at offset %d\n", i); - return rv; - } - } - - return 0; -} - -int ec_flash_erase(int offset, int size) -{ - struct ec_params_flash_erase p; - - p.offset = offset; - p.size = size; - - return ec_command(EC_CMD_FLASH_ERASE, 0, &p, sizeof(p), NULL, 0); -} - -int ec_flash_erase_async(int offset, int size) -{ - struct ec_params_flash_erase_v1 p = { 0 }; - uint32_t timeout = 0; - int rv = FLASH_ERASE_BUSY_RV; - - p.cmd = FLASH_ERASE_SECTOR_ASYNC; - p.params.offset = offset; - p.params.size = size; - - rv = ec_command(EC_CMD_FLASH_ERASE, 1, &p, sizeof(p), NULL, 0); - - if (rv < 0) - return rv; - - rv = FLASH_ERASE_BUSY_RV; - - while (rv < 0 && timeout < ERASE_ASYNC_TIMEOUT) { - /* - * The erase is not complete until FLASH_ERASE_GET_RESULT - * returns success. It's important that we retry even when the - * underlying ioctl returns an error (not just - * FLASH_ERASE_BUSY_RV). - * - * See https://crrev.com/c/511805 for details. - */ - usleep(ERASE_ASYNC_WAIT); - timeout += ERASE_ASYNC_WAIT; - p.cmd = FLASH_ERASE_GET_RESULT; - rv = ec_command(EC_CMD_FLASH_ERASE, 1, &p, sizeof(p), NULL, 0); - } - return rv; -} |