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cmd/cros_ec.c
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bfeba0173 cmd: cros_ec: Mov... |
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/* * Chromium OS cros_ec driver * * Copyright (c) 2016 The Chromium OS Authors. * Copyright (c) 2016 National Instruments Corp * * SPDX-License-Identifier: GPL-2.0+ */ #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"}; DECLARE_GLOBAL_DATA_PTR; /** |
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* 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_RW; else if (0 == strcmp(*argv, "ro")) return EC_FLASH_REGION_RO; debug("%s: Invalid region '%s' ", __func__, *argv); } else { debug("%s: Missing region parameter ", __func__); } return -1; } /** |
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* 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, ®ion_size); if (ret) { debug("%s: Could not read region info ", __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 ", __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) |
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device_remove(udev, DM_REMOVE_NORMAL); |
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ret = uclass_get_device(UCLASS_CROS_EC, 0, &udev); if (ret) { printf("Could not init cros_ec device (err %d) ", ret); return 1; } return 0; } ret = uclass_get_device(UCLASS_CROS_EC, 0, &udev); if (ret) { printf("Cannot get cros-ec device (err=%d) ", 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 ", __func__); return 1; } printf("%s ", 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 ", __func__); return 1; } printf("rows = %u ", info.rows); printf("cols = %u ", info.cols); printf("switches = %#x ", 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 ", __func__); return 1; } printf("%d ", 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 ", __func__); return 1; } if (hash.hash_type == EC_VBOOT_HASH_TYPE_SHA256) printf("type: SHA-256 "); else printf("type: %d ", hash.hash_type); printf("offset: 0x%08x ", hash.offset); printf("size: 0x%08x ", hash.size); printf("digest: "); for (i = 0; i < hash.digest_size; i++) printf("%02x", hash.hash_digest[i]); printf(" "); } 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 ", __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 ", __func__); return 1; } printf("0x%08x ", 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 ", __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 ", __func__); ret = -1; } else { ret = cros_ec_flash_erase(dev, offset, size); if (ret) { debug("%s: Could not erase region ", __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 ", __func__); } else { printf("Region: %s ", region == EC_FLASH_REGION_RO ? "RO" : "RW"); printf("Offset: %x ", offset); printf("Size: %x ", 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 ", p.flash_size); printf("Write block size: %u ", p.write_block_size); printf("Erase block size: %u ", 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_vbnvcontext(dev, block); if (!ret) { printf("vbnv_block: "); for (i = 0; i < EC_VBNV_BLOCK_SIZE; i++) printf("%02x", block[i]); putc(' '); } } 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 ", __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 ", result); else puts("Test passed "); } 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 ", (int)sizeof(p->version_string_ro), p->version_string_ro); printf("RW version: %1.*s ", (int)sizeof(p->version_string_rw), p->version_string_rw); printf("Firmware copy: %s ", (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 ", 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 ", index, state == EC_LDO_STATE_ON ? "on" : "off"); } } if (ret) { debug("%s: Could not access LDO%d ", __func__, index); return ret; } } else { return CMD_RET_USAGE; } if (ret < 0) { printf("Error: CROS-EC command failed (error %d) ", 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) " "crosec id Read CROS-EC ID " "crosec info Read CROS-EC info " "crosec curimage Read CROS-EC current image " "crosec hash Read CROS-EC hash " "crosec reboot [rw | ro | cold] Reboot CROS-EC " "crosec events Read CROS-EC host events " "crosec clrevents [mask] Clear CROS-EC host events " "crosec regioninfo <ro|rw> Read image info " "crosec flashinfo Read flash info " "crosec erase <ro|rw> Erase EC image " "crosec read <ro|rw> <addr> [<size>] Read EC image " "crosec write <ro|rw> <addr> [<size>] Write EC image " "crosec vbnvcontext [hexstring] Read [write] VbNvContext from EC " "crosec ldo <idx> [<state>] Switch/Read LDO state " "crosec test run tests on cros_ec " "crosec version Read CROS-EC version" ); |