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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /util/ec_flash.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-release-R102-14695.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'util/ec_flash.c')
-rw-r--r--util/ec_flash.c231
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;
-}