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authorTom Rini <trini@konsulko.com>2016-10-12 20:48:43 -0400
committerTom Rini <trini@konsulko.com>2016-10-12 20:48:43 -0400
commit79493609c5300be6cc555ab8bd38971360b381f6 (patch)
treedff7c18752cbc05974dc5459c0b90879edf8e342 /drivers/misc
parent5ebd27d860ec0c6e36f1b0f973653fe66a7360be (diff)
parentbfeba0173aa45c24bbdba45149716c83258d25f6 (diff)
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Merge git://git.denx.de/u-boot-dm
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/cros_ec.c385
1 files changed, 37 insertions, 348 deletions
diff --git a/drivers/misc/cros_ec.c b/drivers/misc/cros_ec.c
index 5225cdb..8073730 100644
--- a/drivers/misc/cros_ec.c
+++ b/drivers/misc/cros_ec.c
@@ -43,9 +43,6 @@ enum {
DECLARE_GLOBAL_DATA_PTR;
-/* Note: depends on enum ec_current_image */
-static const char * const ec_current_image_name[] = {"unknown", "RO", "RW"};
-
void cros_ec_dump_data(const char *name, int cmd, const uint8_t *data, int len)
{
#ifdef DEBUG
@@ -750,15 +747,24 @@ int cros_ec_flash_erase(struct cros_ec_dev *dev, uint32_t offset, uint32_t size)
static int cros_ec_flash_write_block(struct cros_ec_dev *dev,
const uint8_t *data, uint32_t offset, uint32_t size)
{
- struct ec_params_flash_write p;
+ struct ec_params_flash_write *p;
+ int ret;
- p.offset = offset;
- p.size = size;
- assert(data && p.size <= EC_FLASH_WRITE_VER0_SIZE);
- memcpy(&p + 1, data, p.size);
+ p = malloc(sizeof(*p) + size);
+ if (!p)
+ return -ENOMEM;
+
+ p->offset = offset;
+ p->size = size;
+ assert(data && p->size <= EC_FLASH_WRITE_VER0_SIZE);
+ memcpy(p + 1, data, p->size);
+
+ ret = ec_command_inptr(dev, EC_CMD_FLASH_WRITE, 0,
+ p, sizeof(*p) + size, NULL, 0) >= 0 ? 0 : -1;
- return ec_command_inptr(dev, EC_CMD_FLASH_WRITE, 0,
- &p, sizeof(p), NULL, 0) >= 0 ? 0 : -1;
+ free(p);
+
+ return ret;
}
/**
@@ -790,6 +796,27 @@ static int cros_ec_data_is_erased(const uint32_t *data, int size)
return 1;
}
+/**
+ * Read back flash parameters
+ *
+ * This function reads back parameters of the flash as reported by the EC
+ *
+ * @param dev Pointer to device
+ * @param info Pointer to output flash info struct
+ */
+int cros_ec_read_flashinfo(struct cros_ec_dev *dev,
+ struct ec_response_flash_info *info)
+{
+ int ret;
+
+ ret = ec_command(dev, EC_CMD_FLASH_INFO, 0,
+ NULL, 0, info, sizeof(*info));
+ if (ret < 0)
+ return ret;
+
+ return ret < sizeof(*info) ? -1 : 0;
+}
+
int cros_ec_flash_write(struct cros_ec_dev *dev, const uint8_t *data,
uint32_t offset, uint32_t size)
{
@@ -1134,344 +1161,6 @@ int cros_ec_i2c_tunnel(struct udevice *dev, int port, struct i2c_msg *in,
return 0;
}
-#ifdef CONFIG_CMD_CROS_EC
-
-/**
- * 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 cros_ec_dev *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, &region_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 cros_ec_dev *dev;
- struct udevice *udev;
- 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, &udev);
- if (!ret)
- device_remove(udev);
- ret = uclass_get_device(UCLASS_CROS_EC, 0, &udev);
- 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, &udev);
- if (ret) {
- printf("Cannot get cros-ec device (err=%d)\n", ret);
- return 1;
- }
- dev = dev_get_uclass_priv(udev);
- 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);
- printf("switches = %#x\n", info.switches);
- } 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, &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_RW)
- 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("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_vbnvcontext(dev, block);
- 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_vbnvcontext(dev, block);
- }
- 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(udev, index, state);
- } else {
- ret = cros_ec_get_ldo(udev, 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 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"
-);
-#endif
-
UCLASS_DRIVER(cros_ec) = {
.id = UCLASS_CROS_EC,
.name = "cros_ec",