mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
a12ef7e26a
Allow selection of which EC image to hash. Signed-off-by: Simon Glass <sjg@chromium.org>
384 lines
10 KiB
C
384 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Chromium OS cros_ec driver
|
|
*
|
|
* Copyright (c) 2016 The Chromium OS Authors.
|
|
* Copyright (c) 2016 National Instruments Corp
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <command.h>
|
|
#include <cros_ec.h>
|
|
#include <dm.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/uclass-internal.h>
|
|
|
|
/* Note: depends on enum ec_current_image */
|
|
static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"};
|
|
|
|
/**
|
|
* Decode a flash region parameter
|
|
*
|
|
* @param argc Number of params remaining
|
|
* @param argv List of remaining parameters
|
|
* @return flash region (EC_FLASH_REGION_...) or -1 on error
|
|
*/
|
|
static int cros_ec_decode_region(int argc, char * const argv[])
|
|
{
|
|
if (argc > 0) {
|
|
if (0 == strcmp(*argv, "rw"))
|
|
return EC_FLASH_REGION_ACTIVE;
|
|
else if (0 == strcmp(*argv, "ro"))
|
|
return EC_FLASH_REGION_RO;
|
|
|
|
debug("%s: Invalid region '%s'\n", __func__, *argv);
|
|
} else {
|
|
debug("%s: Missing region parameter\n", __func__);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Perform a flash read or write command
|
|
*
|
|
* @param dev CROS-EC device to read/write
|
|
* @param is_write 1 do to a write, 0 to do a read
|
|
* @param argc Number of arguments
|
|
* @param argv Arguments (2 is region, 3 is address)
|
|
* @return 0 for ok, 1 for a usage error or -ve for ec command error
|
|
* (negative EC_RES_...)
|
|
*/
|
|
static int do_read_write(struct udevice *dev, int is_write, int argc,
|
|
char * const argv[])
|
|
{
|
|
uint32_t offset, size = -1U, region_size;
|
|
unsigned long addr;
|
|
char *endp;
|
|
int region;
|
|
int ret;
|
|
|
|
region = cros_ec_decode_region(argc - 2, argv + 2);
|
|
if (region == -1)
|
|
return 1;
|
|
if (argc < 4)
|
|
return 1;
|
|
addr = simple_strtoul(argv[3], &endp, 16);
|
|
if (*argv[3] == 0 || *endp != 0)
|
|
return 1;
|
|
if (argc > 4) {
|
|
size = simple_strtoul(argv[4], &endp, 16);
|
|
if (*argv[4] == 0 || *endp != 0)
|
|
return 1;
|
|
}
|
|
|
|
ret = cros_ec_flash_offset(dev, region, &offset, ®ion_size);
|
|
if (ret) {
|
|
debug("%s: Could not read region info\n", __func__);
|
|
return ret;
|
|
}
|
|
if (size == -1U)
|
|
size = region_size;
|
|
|
|
ret = is_write ?
|
|
cros_ec_flash_write(dev, (uint8_t *)addr, offset, size) :
|
|
cros_ec_flash_read(dev, (uint8_t *)addr, offset, size);
|
|
if (ret) {
|
|
debug("%s: Could not %s region\n", __func__,
|
|
is_write ? "write" : "read");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int do_cros_ec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
struct udevice *dev;
|
|
const char *cmd;
|
|
int ret = 0;
|
|
|
|
if (argc < 2)
|
|
return CMD_RET_USAGE;
|
|
|
|
cmd = argv[1];
|
|
if (0 == strcmp("init", cmd)) {
|
|
/* Remove any existing device */
|
|
ret = uclass_find_device(UCLASS_CROS_EC, 0, &dev);
|
|
if (!ret)
|
|
device_remove(dev, DM_REMOVE_NORMAL);
|
|
ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
|
|
if (ret) {
|
|
printf("Could not init cros_ec device (err %d)\n", ret);
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
|
|
if (ret) {
|
|
printf("Cannot get cros-ec device (err=%d)\n", ret);
|
|
return 1;
|
|
}
|
|
if (0 == strcmp("id", cmd)) {
|
|
char id[MSG_BYTES];
|
|
|
|
if (cros_ec_read_id(dev, id, sizeof(id))) {
|
|
debug("%s: Could not read KBC ID\n", __func__);
|
|
return 1;
|
|
}
|
|
printf("%s\n", id);
|
|
} else if (0 == strcmp("info", cmd)) {
|
|
struct ec_response_mkbp_info info;
|
|
|
|
if (cros_ec_info(dev, &info)) {
|
|
debug("%s: Could not read KBC info\n", __func__);
|
|
return 1;
|
|
}
|
|
printf("rows = %u\n", info.rows);
|
|
printf("cols = %u\n", info.cols);
|
|
} else if (0 == strcmp("curimage", cmd)) {
|
|
enum ec_current_image image;
|
|
|
|
if (cros_ec_read_current_image(dev, &image)) {
|
|
debug("%s: Could not read KBC image\n", __func__);
|
|
return 1;
|
|
}
|
|
printf("%d\n", image);
|
|
} else if (0 == strcmp("hash", cmd)) {
|
|
struct ec_response_vboot_hash hash;
|
|
int i;
|
|
|
|
if (cros_ec_read_hash(dev, EC_VBOOT_HASH_OFFSET_ACTIVE, &hash)) {
|
|
debug("%s: Could not read KBC hash\n", __func__);
|
|
return 1;
|
|
}
|
|
|
|
if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256)
|
|
printf("type: SHA-256\n");
|
|
else
|
|
printf("type: %d\n", hash.hash_type);
|
|
|
|
printf("offset: 0x%08x\n", hash.offset);
|
|
printf("size: 0x%08x\n", hash.size);
|
|
|
|
printf("digest: ");
|
|
for (i = 0; i < hash.digest_size; i++)
|
|
printf("%02x", hash.hash_digest[i]);
|
|
printf("\n");
|
|
} else if (0 == strcmp("reboot", cmd)) {
|
|
int region;
|
|
enum ec_reboot_cmd cmd;
|
|
|
|
if (argc >= 3 && !strcmp(argv[2], "cold")) {
|
|
cmd = EC_REBOOT_COLD;
|
|
} else {
|
|
region = cros_ec_decode_region(argc - 2, argv + 2);
|
|
if (region == EC_FLASH_REGION_RO)
|
|
cmd = EC_REBOOT_JUMP_RO;
|
|
else if (region == EC_FLASH_REGION_ACTIVE)
|
|
cmd = EC_REBOOT_JUMP_RW;
|
|
else
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
if (cros_ec_reboot(dev, cmd, 0)) {
|
|
debug("%s: Could not reboot KBC\n", __func__);
|
|
return 1;
|
|
}
|
|
} else if (0 == strcmp("events", cmd)) {
|
|
uint32_t events;
|
|
|
|
if (cros_ec_get_host_events(dev, &events)) {
|
|
debug("%s: Could not read host events\n", __func__);
|
|
return 1;
|
|
}
|
|
printf("0x%08x\n", events);
|
|
} else if (0 == strcmp("clrevents", cmd)) {
|
|
uint32_t events = 0x7fffffff;
|
|
|
|
if (argc >= 3)
|
|
events = simple_strtol(argv[2], NULL, 0);
|
|
|
|
if (cros_ec_clear_host_events(dev, events)) {
|
|
debug("%s: Could not clear host events\n", __func__);
|
|
return 1;
|
|
}
|
|
} else if (0 == strcmp("read", cmd)) {
|
|
ret = do_read_write(dev, 0, argc, argv);
|
|
if (ret > 0)
|
|
return CMD_RET_USAGE;
|
|
} else if (0 == strcmp("write", cmd)) {
|
|
ret = do_read_write(dev, 1, argc, argv);
|
|
if (ret > 0)
|
|
return CMD_RET_USAGE;
|
|
} else if (0 == strcmp("erase", cmd)) {
|
|
int region = cros_ec_decode_region(argc - 2, argv + 2);
|
|
uint32_t offset, size;
|
|
|
|
if (region == -1)
|
|
return CMD_RET_USAGE;
|
|
if (cros_ec_flash_offset(dev, region, &offset, &size)) {
|
|
debug("%s: Could not read region info\n", __func__);
|
|
ret = -1;
|
|
} else {
|
|
ret = cros_ec_flash_erase(dev, offset, size);
|
|
if (ret) {
|
|
debug("%s: Could not erase region\n",
|
|
__func__);
|
|
}
|
|
}
|
|
} else if (0 == strcmp("regioninfo", cmd)) {
|
|
int region = cros_ec_decode_region(argc - 2, argv + 2);
|
|
uint32_t offset, size;
|
|
|
|
if (region == -1)
|
|
return CMD_RET_USAGE;
|
|
ret = cros_ec_flash_offset(dev, region, &offset, &size);
|
|
if (ret) {
|
|
debug("%s: Could not read region info\n", __func__);
|
|
} else {
|
|
printf("Region: %s\n", region == EC_FLASH_REGION_RO ?
|
|
"RO" : "RW");
|
|
printf("Offset: %x\n", offset);
|
|
printf("Size: %x\n", size);
|
|
}
|
|
} else if (0 == strcmp("flashinfo", cmd)) {
|
|
struct ec_response_flash_info p;
|
|
|
|
ret = cros_ec_read_flashinfo(dev, &p);
|
|
if (!ret) {
|
|
printf("Flash size: %u\n", p.flash_size);
|
|
printf("Write block size: %u\n", p.write_block_size);
|
|
printf("Erase block size: %u\n", p.erase_block_size);
|
|
}
|
|
} else if (0 == strcmp("vbnvcontext", cmd)) {
|
|
uint8_t block[EC_VBNV_BLOCK_SIZE];
|
|
char buf[3];
|
|
int i, len;
|
|
unsigned long result;
|
|
|
|
if (argc <= 2) {
|
|
ret = cros_ec_read_nvdata(dev, block,
|
|
EC_VBNV_BLOCK_SIZE);
|
|
if (!ret) {
|
|
printf("vbnv_block: ");
|
|
for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++)
|
|
printf("%02x", block[i]);
|
|
putc('\n');
|
|
}
|
|
} else {
|
|
/*
|
|
* TODO(clchiou): Move this to a utility function as
|
|
* cmd_spi might want to call it.
|
|
*/
|
|
memset(block, 0, EC_VBNV_BLOCK_SIZE);
|
|
len = strlen(argv[2]);
|
|
buf[2] = '\0';
|
|
for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) {
|
|
if (i * 2 >= len)
|
|
break;
|
|
buf[0] = argv[2][i * 2];
|
|
if (i * 2 + 1 >= len)
|
|
buf[1] = '0';
|
|
else
|
|
buf[1] = argv[2][i * 2 + 1];
|
|
strict_strtoul(buf, 16, &result);
|
|
block[i] = result;
|
|
}
|
|
ret = cros_ec_write_nvdata(dev, block,
|
|
EC_VBNV_BLOCK_SIZE);
|
|
}
|
|
if (ret) {
|
|
debug("%s: Could not %s VbNvContext\n", __func__,
|
|
argc <= 2 ? "read" : "write");
|
|
}
|
|
} else if (0 == strcmp("test", cmd)) {
|
|
int result = cros_ec_test(dev);
|
|
|
|
if (result)
|
|
printf("Test failed with error %d\n", result);
|
|
else
|
|
puts("Test passed\n");
|
|
} else if (0 == strcmp("version", cmd)) {
|
|
struct ec_response_get_version *p;
|
|
char *build_string;
|
|
|
|
ret = cros_ec_read_version(dev, &p);
|
|
if (!ret) {
|
|
/* Print versions */
|
|
printf("RO version: %1.*s\n",
|
|
(int)sizeof(p->version_string_ro),
|
|
p->version_string_ro);
|
|
printf("RW version: %1.*s\n",
|
|
(int)sizeof(p->version_string_rw),
|
|
p->version_string_rw);
|
|
printf("Firmware copy: %s\n",
|
|
(p->current_image <
|
|
ARRAY_SIZE(ec_current_image_name) ?
|
|
ec_current_image_name[p->current_image] :
|
|
"?"));
|
|
ret = cros_ec_read_build_info(dev, &build_string);
|
|
if (!ret)
|
|
printf("Build info: %s\n", build_string);
|
|
}
|
|
} else if (0 == strcmp("ldo", cmd)) {
|
|
uint8_t index, state;
|
|
char *endp;
|
|
|
|
if (argc < 3)
|
|
return CMD_RET_USAGE;
|
|
index = simple_strtoul(argv[2], &endp, 10);
|
|
if (*argv[2] == 0 || *endp != 0)
|
|
return CMD_RET_USAGE;
|
|
if (argc > 3) {
|
|
state = simple_strtoul(argv[3], &endp, 10);
|
|
if (*argv[3] == 0 || *endp != 0)
|
|
return CMD_RET_USAGE;
|
|
ret = cros_ec_set_ldo(dev, index, state);
|
|
} else {
|
|
ret = cros_ec_get_ldo(dev, index, &state);
|
|
if (!ret) {
|
|
printf("LDO%d: %s\n", index,
|
|
state == EC_LDO_STATE_ON ?
|
|
"on" : "off");
|
|
}
|
|
}
|
|
|
|
if (ret) {
|
|
debug("%s: Could not access LDO%d\n", __func__, index);
|
|
return ret;
|
|
}
|
|
} else {
|
|
return CMD_RET_USAGE;
|
|
}
|
|
|
|
if (ret < 0) {
|
|
printf("Error: CROS-EC command failed (error %d)\n", ret);
|
|
ret = 1;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
U_BOOT_CMD(
|
|
crosec, 6, 1, do_cros_ec,
|
|
"CROS-EC utility command",
|
|
"init Re-init CROS-EC (done on startup automatically)\n"
|
|
"crosec id Read CROS-EC ID\n"
|
|
"crosec info Read CROS-EC info\n"
|
|
"crosec curimage Read CROS-EC current image\n"
|
|
"crosec hash Read CROS-EC hash\n"
|
|
"crosec reboot [rw | ro | cold] Reboot CROS-EC\n"
|
|
"crosec events Read CROS-EC host events\n"
|
|
"crosec clrevents [mask] Clear CROS-EC host events\n"
|
|
"crosec regioninfo <ro|rw> Read image info\n"
|
|
"crosec flashinfo Read flash info\n"
|
|
"crosec erase <ro|rw> Erase EC image\n"
|
|
"crosec read <ro|rw> <addr> [<size>] Read EC image\n"
|
|
"crosec write <ro|rw> <addr> [<size>] Write EC image\n"
|
|
"crosec vbnvcontext [hexstring] Read [write] VbNvContext from EC\n"
|
|
"crosec ldo <idx> [<state>] Switch/Read LDO state\n"
|
|
"crosec test run tests on cros_ec\n"
|
|
"crosec version Read CROS-EC version"
|
|
);
|