diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/misc/cros_ec.c')
| -rw-r--r-- | qemu/roms/u-boot/drivers/misc/cros_ec.c | 1796 |
1 files changed, 0 insertions, 1796 deletions
diff --git a/qemu/roms/u-boot/drivers/misc/cros_ec.c b/qemu/roms/u-boot/drivers/misc/cros_ec.c deleted file mode 100644 index 068373b94..000000000 --- a/qemu/roms/u-boot/drivers/misc/cros_ec.c +++ /dev/null @@ -1,1796 +0,0 @@ -/* - * Chromium OS cros_ec driver - * - * Copyright (c) 2012 The Chromium OS Authors. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -/* - * This is the interface to the Chrome OS EC. It provides keyboard functions, - * power control and battery management. Quite a few other functions are - * provided to enable the EC software to be updated, talk to the EC's I2C bus - * and store a small amount of data in a memory which persists while the EC - * is not reset. - */ - -#include <common.h> -#include <command.h> -#include <i2c.h> -#include <cros_ec.h> -#include <fdtdec.h> -#include <malloc.h> -#include <spi.h> -#include <asm/errno.h> -#include <asm/io.h> -#include <asm-generic/gpio.h> - -#ifdef DEBUG_TRACE -#define debug_trace(fmt, b...) debug(fmt, #b) -#else -#define debug_trace(fmt, b...) -#endif - -enum { - /* Timeout waiting for a flash erase command to complete */ - CROS_EC_CMD_TIMEOUT_MS = 5000, - /* Timeout waiting for a synchronous hash to be recomputed */ - CROS_EC_CMD_HASH_TIMEOUT_MS = 2000, -}; - -static struct cros_ec_dev static_dev, *last_dev; - -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 - int i; - - printf("%s: ", name); - if (cmd != -1) - printf("cmd=%#x: ", cmd); - for (i = 0; i < len; i++) - printf("%02x ", data[i]); - printf("\n"); -#endif -} - -/* - * Calculate a simple 8-bit checksum of a data block - * - * @param data Data block to checksum - * @param size Size of data block in bytes - * @return checksum value (0 to 255) - */ -int cros_ec_calc_checksum(const uint8_t *data, int size) -{ - int csum, i; - - for (i = csum = 0; i < size; i++) - csum += data[i]; - return csum & 0xff; -} - -/** - * Create a request packet for protocol version 3. - * - * The packet is stored in the device's internal output buffer. - * - * @param dev CROS-EC device - * @param cmd Command to send (EC_CMD_...) - * @param cmd_version Version of command to send (EC_VER_...) - * @param dout Output data (may be NULL If dout_len=0) - * @param dout_len Size of output data in bytes - * @return packet size in bytes, or <0 if error. - */ -static int create_proto3_request(struct cros_ec_dev *dev, - int cmd, int cmd_version, - const void *dout, int dout_len) -{ - struct ec_host_request *rq = (struct ec_host_request *)dev->dout; - int out_bytes = dout_len + sizeof(*rq); - - /* Fail if output size is too big */ - if (out_bytes > (int)sizeof(dev->dout)) { - debug("%s: Cannot send %d bytes\n", __func__, dout_len); - return -EC_RES_REQUEST_TRUNCATED; - } - - /* Fill in request packet */ - rq->struct_version = EC_HOST_REQUEST_VERSION; - rq->checksum = 0; - rq->command = cmd; - rq->command_version = cmd_version; - rq->reserved = 0; - rq->data_len = dout_len; - - /* Copy data after header */ - memcpy(rq + 1, dout, dout_len); - - /* Write checksum field so the entire packet sums to 0 */ - rq->checksum = (uint8_t)(-cros_ec_calc_checksum(dev->dout, out_bytes)); - - cros_ec_dump_data("out", cmd, dev->dout, out_bytes); - - /* Return size of request packet */ - return out_bytes; -} - -/** - * Prepare the device to receive a protocol version 3 response. - * - * @param dev CROS-EC device - * @param din_len Maximum size of response in bytes - * @return maximum expected number of bytes in response, or <0 if error. - */ -static int prepare_proto3_response_buffer(struct cros_ec_dev *dev, int din_len) -{ - int in_bytes = din_len + sizeof(struct ec_host_response); - - /* Fail if input size is too big */ - if (in_bytes > (int)sizeof(dev->din)) { - debug("%s: Cannot receive %d bytes\n", __func__, din_len); - return -EC_RES_RESPONSE_TOO_BIG; - } - - /* Return expected size of response packet */ - return in_bytes; -} - -/** - * Handle a protocol version 3 response packet. - * - * The packet must already be stored in the device's internal input buffer. - * - * @param dev CROS-EC device - * @param dinp Returns pointer to response data - * @param din_len Maximum size of response in bytes - * @return number of bytes of response data, or <0 if error - */ -static int handle_proto3_response(struct cros_ec_dev *dev, - uint8_t **dinp, int din_len) -{ - struct ec_host_response *rs = (struct ec_host_response *)dev->din; - int in_bytes; - int csum; - - cros_ec_dump_data("in-header", -1, dev->din, sizeof(*rs)); - - /* Check input data */ - if (rs->struct_version != EC_HOST_RESPONSE_VERSION) { - debug("%s: EC response version mismatch\n", __func__); - return -EC_RES_INVALID_RESPONSE; - } - - if (rs->reserved) { - debug("%s: EC response reserved != 0\n", __func__); - return -EC_RES_INVALID_RESPONSE; - } - - if (rs->data_len > din_len) { - debug("%s: EC returned too much data\n", __func__); - return -EC_RES_RESPONSE_TOO_BIG; - } - - cros_ec_dump_data("in-data", -1, dev->din + sizeof(*rs), rs->data_len); - - /* Update in_bytes to actual data size */ - in_bytes = sizeof(*rs) + rs->data_len; - - /* Verify checksum */ - csum = cros_ec_calc_checksum(dev->din, in_bytes); - if (csum) { - debug("%s: EC response checksum invalid: 0x%02x\n", __func__, - csum); - return -EC_RES_INVALID_CHECKSUM; - } - - /* Return error result, if any */ - if (rs->result) - return -(int)rs->result; - - /* If we're still here, set response data pointer and return length */ - *dinp = (uint8_t *)(rs + 1); - - return rs->data_len; -} - -static int send_command_proto3(struct cros_ec_dev *dev, - int cmd, int cmd_version, - const void *dout, int dout_len, - uint8_t **dinp, int din_len) -{ - int out_bytes, in_bytes; - int rv; - - /* Create request packet */ - out_bytes = create_proto3_request(dev, cmd, cmd_version, - dout, dout_len); - if (out_bytes < 0) - return out_bytes; - - /* Prepare response buffer */ - in_bytes = prepare_proto3_response_buffer(dev, din_len); - if (in_bytes < 0) - return in_bytes; - - switch (dev->interface) { -#ifdef CONFIG_CROS_EC_SPI - case CROS_EC_IF_SPI: - rv = cros_ec_spi_packet(dev, out_bytes, in_bytes); - break; -#endif -#ifdef CONFIG_CROS_EC_SANDBOX - case CROS_EC_IF_SANDBOX: - rv = cros_ec_sandbox_packet(dev, out_bytes, in_bytes); - break; -#endif - case CROS_EC_IF_NONE: - /* TODO: support protocol 3 for LPC, I2C; for now fall through */ - default: - debug("%s: Unsupported interface\n", __func__); - rv = -1; - } - if (rv < 0) - return rv; - - /* Process the response */ - return handle_proto3_response(dev, dinp, din_len); -} - -static int send_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version, - const void *dout, int dout_len, - uint8_t **dinp, int din_len) -{ - int ret = -1; - - /* Handle protocol version 3 support */ - if (dev->protocol_version == 3) { - return send_command_proto3(dev, cmd, cmd_version, - dout, dout_len, dinp, din_len); - } - - switch (dev->interface) { -#ifdef CONFIG_CROS_EC_SPI - case CROS_EC_IF_SPI: - ret = cros_ec_spi_command(dev, cmd, cmd_version, - (const uint8_t *)dout, dout_len, - dinp, din_len); - break; -#endif -#ifdef CONFIG_CROS_EC_I2C - case CROS_EC_IF_I2C: - ret = cros_ec_i2c_command(dev, cmd, cmd_version, - (const uint8_t *)dout, dout_len, - dinp, din_len); - break; -#endif -#ifdef CONFIG_CROS_EC_LPC - case CROS_EC_IF_LPC: - ret = cros_ec_lpc_command(dev, cmd, cmd_version, - (const uint8_t *)dout, dout_len, - dinp, din_len); - break; -#endif - case CROS_EC_IF_NONE: - default: - ret = -1; - } - - return ret; -} - -/** - * Send a command to the CROS-EC device and return the reply. - * - * The device's internal input/output buffers are used. - * - * @param dev CROS-EC device - * @param cmd Command to send (EC_CMD_...) - * @param cmd_version Version of command to send (EC_VER_...) - * @param dout Output data (may be NULL If dout_len=0) - * @param dout_len Size of output data in bytes - * @param dinp Response data (may be NULL If din_len=0). - * If not NULL, it will be updated to point to the data - * and will always be double word aligned (64-bits) - * @param din_len Maximum size of response in bytes - * @return number of bytes in response, or -1 on error - */ -static int ec_command_inptr(struct cros_ec_dev *dev, uint8_t cmd, - int cmd_version, const void *dout, int dout_len, uint8_t **dinp, - int din_len) -{ - uint8_t *din = NULL; - int len; - - len = send_command(dev, cmd, cmd_version, dout, dout_len, - &din, din_len); - - /* If the command doesn't complete, wait a while */ - if (len == -EC_RES_IN_PROGRESS) { - struct ec_response_get_comms_status *resp = NULL; - ulong start; - - /* Wait for command to complete */ - start = get_timer(0); - do { - int ret; - - mdelay(50); /* Insert some reasonable delay */ - ret = send_command(dev, EC_CMD_GET_COMMS_STATUS, 0, - NULL, 0, - (uint8_t **)&resp, sizeof(*resp)); - if (ret < 0) - return ret; - - if (get_timer(start) > CROS_EC_CMD_TIMEOUT_MS) { - debug("%s: Command %#02x timeout\n", - __func__, cmd); - return -EC_RES_TIMEOUT; - } - } while (resp->flags & EC_COMMS_STATUS_PROCESSING); - - /* OK it completed, so read the status response */ - /* not sure why it was 0 for the last argument */ - len = send_command(dev, EC_CMD_RESEND_RESPONSE, 0, - NULL, 0, &din, din_len); - } - - debug("%s: len=%d, dinp=%p, *dinp=%p\n", __func__, len, dinp, - dinp ? *dinp : NULL); - if (dinp) { - /* If we have any data to return, it must be 64bit-aligned */ - assert(len <= 0 || !((uintptr_t)din & 7)); - *dinp = din; - } - - return len; -} - -/** - * Send a command to the CROS-EC device and return the reply. - * - * The device's internal input/output buffers are used. - * - * @param dev CROS-EC device - * @param cmd Command to send (EC_CMD_...) - * @param cmd_version Version of command to send (EC_VER_...) - * @param dout Output data (may be NULL If dout_len=0) - * @param dout_len Size of output data in bytes - * @param din Response data (may be NULL If din_len=0). - * It not NULL, it is a place for ec_command() to copy the - * data to. - * @param din_len Maximum size of response in bytes - * @return number of bytes in response, or -1 on error - */ -static int ec_command(struct cros_ec_dev *dev, uint8_t cmd, int cmd_version, - const void *dout, int dout_len, - void *din, int din_len) -{ - uint8_t *in_buffer; - int len; - - assert((din_len == 0) || din); - len = ec_command_inptr(dev, cmd, cmd_version, dout, dout_len, - &in_buffer, din_len); - if (len > 0) { - /* - * If we were asked to put it somewhere, do so, otherwise just - * disregard the result. - */ - if (din && in_buffer) { - assert(len <= din_len); - memmove(din, in_buffer, len); - } - } - return len; -} - -int cros_ec_scan_keyboard(struct cros_ec_dev *dev, struct mbkp_keyscan *scan) -{ - if (ec_command(dev, EC_CMD_MKBP_STATE, 0, NULL, 0, scan, - sizeof(scan->data)) != sizeof(scan->data)) - return -1; - - return 0; -} - -int cros_ec_read_id(struct cros_ec_dev *dev, char *id, int maxlen) -{ - struct ec_response_get_version *r; - - if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0, - (uint8_t **)&r, sizeof(*r)) != sizeof(*r)) - return -1; - - if (maxlen > (int)sizeof(r->version_string_ro)) - maxlen = sizeof(r->version_string_ro); - - switch (r->current_image) { - case EC_IMAGE_RO: - memcpy(id, r->version_string_ro, maxlen); - break; - case EC_IMAGE_RW: - memcpy(id, r->version_string_rw, maxlen); - break; - default: - return -1; - } - - id[maxlen - 1] = '\0'; - return 0; -} - -int cros_ec_read_version(struct cros_ec_dev *dev, - struct ec_response_get_version **versionp) -{ - if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0, - (uint8_t **)versionp, sizeof(**versionp)) - != sizeof(**versionp)) - return -1; - - return 0; -} - -int cros_ec_read_build_info(struct cros_ec_dev *dev, char **strp) -{ - if (ec_command_inptr(dev, EC_CMD_GET_BUILD_INFO, 0, NULL, 0, - (uint8_t **)strp, EC_PROTO2_MAX_PARAM_SIZE) < 0) - return -1; - - return 0; -} - -int cros_ec_read_current_image(struct cros_ec_dev *dev, - enum ec_current_image *image) -{ - struct ec_response_get_version *r; - - if (ec_command_inptr(dev, EC_CMD_GET_VERSION, 0, NULL, 0, - (uint8_t **)&r, sizeof(*r)) != sizeof(*r)) - return -1; - - *image = r->current_image; - return 0; -} - -static int cros_ec_wait_on_hash_done(struct cros_ec_dev *dev, - struct ec_response_vboot_hash *hash) -{ - struct ec_params_vboot_hash p; - ulong start; - - start = get_timer(0); - while (hash->status == EC_VBOOT_HASH_STATUS_BUSY) { - mdelay(50); /* Insert some reasonable delay */ - - p.cmd = EC_VBOOT_HASH_GET; - if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p), - hash, sizeof(*hash)) < 0) - return -1; - - if (get_timer(start) > CROS_EC_CMD_HASH_TIMEOUT_MS) { - debug("%s: EC_VBOOT_HASH_GET timeout\n", __func__); - return -EC_RES_TIMEOUT; - } - } - return 0; -} - - -int cros_ec_read_hash(struct cros_ec_dev *dev, - struct ec_response_vboot_hash *hash) -{ - struct ec_params_vboot_hash p; - int rv; - - p.cmd = EC_VBOOT_HASH_GET; - if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p), - hash, sizeof(*hash)) < 0) - return -1; - - /* If the EC is busy calculating the hash, fidget until it's done. */ - rv = cros_ec_wait_on_hash_done(dev, hash); - if (rv) - return rv; - - /* If the hash is valid, we're done. Otherwise, we have to kick it off - * again and wait for it to complete. Note that we explicitly assume - * that hashing zero bytes is always wrong, even though that would - * produce a valid hash value. */ - if (hash->status == EC_VBOOT_HASH_STATUS_DONE && hash->size) - return 0; - - debug("%s: No valid hash (status=%d size=%d). Compute one...\n", - __func__, hash->status, hash->size); - - p.cmd = EC_VBOOT_HASH_START; - p.hash_type = EC_VBOOT_HASH_TYPE_SHA256; - p.nonce_size = 0; - p.offset = EC_VBOOT_HASH_OFFSET_RW; - - if (ec_command(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p), - hash, sizeof(*hash)) < 0) - return -1; - - rv = cros_ec_wait_on_hash_done(dev, hash); - if (rv) - return rv; - - debug("%s: hash done\n", __func__); - - return 0; -} - -static int cros_ec_invalidate_hash(struct cros_ec_dev *dev) -{ - struct ec_params_vboot_hash p; - struct ec_response_vboot_hash *hash; - - /* We don't have an explict command for the EC to discard its current - * hash value, so we'll just tell it to calculate one that we know is - * wrong (we claim that hashing zero bytes is always invalid). - */ - p.cmd = EC_VBOOT_HASH_RECALC; - p.hash_type = EC_VBOOT_HASH_TYPE_SHA256; - p.nonce_size = 0; - p.offset = 0; - p.size = 0; - - debug("%s:\n", __func__); - - if (ec_command_inptr(dev, EC_CMD_VBOOT_HASH, 0, &p, sizeof(p), - (uint8_t **)&hash, sizeof(*hash)) < 0) - return -1; - - /* No need to wait for it to finish */ - return 0; -} - -int cros_ec_reboot(struct cros_ec_dev *dev, enum ec_reboot_cmd cmd, - uint8_t flags) -{ - struct ec_params_reboot_ec p; - - p.cmd = cmd; - p.flags = flags; - - if (ec_command_inptr(dev, EC_CMD_REBOOT_EC, 0, &p, sizeof(p), NULL, 0) - < 0) - return -1; - - if (!(flags & EC_REBOOT_FLAG_ON_AP_SHUTDOWN)) { - /* - * EC reboot will take place immediately so delay to allow it - * to complete. Note that some reboot types (EC_REBOOT_COLD) - * will reboot the AP as well, in which case we won't actually - * get to this point. - */ - /* - * TODO(rspangler@chromium.org): Would be nice if we had a - * better way to determine when the reboot is complete. Could - * we poll a memory-mapped LPC value? - */ - udelay(50000); - } - - return 0; -} - -int cros_ec_interrupt_pending(struct cros_ec_dev *dev) -{ - /* no interrupt support : always poll */ - if (!fdt_gpio_isvalid(&dev->ec_int)) - return -ENOENT; - - return !gpio_get_value(dev->ec_int.gpio); -} - -int cros_ec_info(struct cros_ec_dev *dev, struct ec_response_mkbp_info *info) -{ - if (ec_command(dev, EC_CMD_MKBP_INFO, 0, NULL, 0, info, - sizeof(*info)) != sizeof(*info)) - return -1; - - return 0; -} - -int cros_ec_get_host_events(struct cros_ec_dev *dev, uint32_t *events_ptr) -{ - struct ec_response_host_event_mask *resp; - - /* - * Use the B copy of the event flags, because the main copy is already - * used by ACPI/SMI. - */ - if (ec_command_inptr(dev, EC_CMD_HOST_EVENT_GET_B, 0, NULL, 0, - (uint8_t **)&resp, sizeof(*resp)) < (int)sizeof(*resp)) - return -1; - - if (resp->mask & EC_HOST_EVENT_MASK(EC_HOST_EVENT_INVALID)) - return -1; - - *events_ptr = resp->mask; - return 0; -} - -int cros_ec_clear_host_events(struct cros_ec_dev *dev, uint32_t events) -{ - struct ec_params_host_event_mask params; - - params.mask = events; - - /* - * Use the B copy of the event flags, so it affects the data returned - * by cros_ec_get_host_events(). - */ - if (ec_command_inptr(dev, EC_CMD_HOST_EVENT_CLEAR_B, 0, - ¶ms, sizeof(params), NULL, 0) < 0) - return -1; - - return 0; -} - -int cros_ec_flash_protect(struct cros_ec_dev *dev, - uint32_t set_mask, uint32_t set_flags, - struct ec_response_flash_protect *resp) -{ - struct ec_params_flash_protect params; - - params.mask = set_mask; - params.flags = set_flags; - - if (ec_command(dev, EC_CMD_FLASH_PROTECT, EC_VER_FLASH_PROTECT, - ¶ms, sizeof(params), - resp, sizeof(*resp)) != sizeof(*resp)) - return -1; - - return 0; -} - -static int cros_ec_check_version(struct cros_ec_dev *dev) -{ - struct ec_params_hello req; - struct ec_response_hello *resp; - -#ifdef CONFIG_CROS_EC_LPC - /* LPC has its own way of doing this */ - if (dev->interface == CROS_EC_IF_LPC) - return cros_ec_lpc_check_version(dev); -#endif - - /* - * TODO(sjg@chromium.org). - * There is a strange oddity here with the EC. We could just ignore - * the response, i.e. pass the last two parameters as NULL and 0. - * In this case we won't read back very many bytes from the EC. - * On the I2C bus the EC gets upset about this and will try to send - * the bytes anyway. This means that we will have to wait for that - * to complete before continuing with a new EC command. - * - * This problem is probably unique to the I2C bus. - * - * So for now, just read all the data anyway. - */ - - /* Try sending a version 3 packet */ - dev->protocol_version = 3; - if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), - (uint8_t **)&resp, sizeof(*resp)) > 0) { - return 0; - } - - /* Try sending a version 2 packet */ - dev->protocol_version = 2; - if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), - (uint8_t **)&resp, sizeof(*resp)) > 0) { - return 0; - } - - /* - * Fail if we're still here, since the EC doesn't understand any - * protcol version we speak. Version 1 interface without command - * version is no longer supported, and we don't know about any new - * protocol versions. - */ - dev->protocol_version = 0; - printf("%s: ERROR: old EC interface not supported\n", __func__); - return -1; -} - -int cros_ec_test(struct cros_ec_dev *dev) -{ - struct ec_params_hello req; - struct ec_response_hello *resp; - - req.in_data = 0x12345678; - if (ec_command_inptr(dev, EC_CMD_HELLO, 0, &req, sizeof(req), - (uint8_t **)&resp, sizeof(*resp)) < sizeof(*resp)) { - printf("ec_command_inptr() returned error\n"); - return -1; - } - if (resp->out_data != req.in_data + 0x01020304) { - printf("Received invalid handshake %x\n", resp->out_data); - return -1; - } - - return 0; -} - -int cros_ec_flash_offset(struct cros_ec_dev *dev, enum ec_flash_region region, - uint32_t *offset, uint32_t *size) -{ - struct ec_params_flash_region_info p; - struct ec_response_flash_region_info *r; - int ret; - - p.region = region; - ret = ec_command_inptr(dev, EC_CMD_FLASH_REGION_INFO, - EC_VER_FLASH_REGION_INFO, - &p, sizeof(p), (uint8_t **)&r, sizeof(*r)); - if (ret != sizeof(*r)) - return -1; - - if (offset) - *offset = r->offset; - if (size) - *size = r->size; - - return 0; -} - -int cros_ec_flash_erase(struct cros_ec_dev *dev, uint32_t offset, uint32_t size) -{ - struct ec_params_flash_erase p; - - p.offset = offset; - p.size = size; - return ec_command_inptr(dev, EC_CMD_FLASH_ERASE, 0, &p, sizeof(p), - NULL, 0); -} - -/** - * Write a single block to the flash - * - * Write a block of data to the EC flash. The size must not exceed the flash - * write block size which you can obtain from cros_ec_flash_write_burst_size(). - * - * The offset starts at 0. You can obtain the region information from - * cros_ec_flash_offset() to find out where to write for a particular region. - * - * Attempting to write to the region where the EC is currently running from - * will result in an error. - * - * @param dev CROS-EC device - * @param data Pointer to data buffer to write - * @param offset Offset within flash to write to. - * @param size Number of bytes to write - * @return 0 if ok, -1 on error - */ -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; - - p.offset = offset; - p.size = size; - assert(data && p.size <= EC_FLASH_WRITE_VER0_SIZE); - memcpy(&p + 1, data, p.size); - - return ec_command_inptr(dev, EC_CMD_FLASH_WRITE, 0, - &p, sizeof(p), NULL, 0) >= 0 ? 0 : -1; -} - -/** - * Return optimal flash write burst size - */ -static int cros_ec_flash_write_burst_size(struct cros_ec_dev *dev) -{ - return EC_FLASH_WRITE_VER0_SIZE; -} - -/** - * Check if a block of data is erased (all 0xff) - * - * This function is useful when dealing with flash, for checking whether a - * data block is erased and thus does not need to be programmed. - * - * @param data Pointer to data to check (must be word-aligned) - * @param size Number of bytes to check (must be word-aligned) - * @return 0 if erased, non-zero if any word is not erased - */ -static int cros_ec_data_is_erased(const uint32_t *data, int size) -{ - assert(!(size & 3)); - size /= sizeof(uint32_t); - for (; size > 0; size -= 4, data++) - if (*data != -1U) - return 0; - - return 1; -} - -int cros_ec_flash_write(struct cros_ec_dev *dev, const uint8_t *data, - uint32_t offset, uint32_t size) -{ - uint32_t burst = cros_ec_flash_write_burst_size(dev); - uint32_t end, off; - int ret; - - /* - * TODO: round up to the nearest multiple of write size. Can get away - * without that on link right now because its write size is 4 bytes. - */ - end = offset + size; - for (off = offset; off < end; off += burst, data += burst) { - uint32_t todo; - - /* If the data is empty, there is no point in programming it */ - todo = min(end - off, burst); - if (dev->optimise_flash_write && - cros_ec_data_is_erased((uint32_t *)data, todo)) - continue; - - ret = cros_ec_flash_write_block(dev, data, off, todo); - if (ret) - return ret; - } - - return 0; -} - -/** - * Read a single block from the flash - * - * Read a block of data from the EC flash. The size must not exceed the flash - * write block size which you can obtain from cros_ec_flash_write_burst_size(). - * - * The offset starts at 0. You can obtain the region information from - * cros_ec_flash_offset() to find out where to read for a particular region. - * - * @param dev CROS-EC device - * @param data Pointer to data buffer to read into - * @param offset Offset within flash to read from - * @param size Number of bytes to read - * @return 0 if ok, -1 on error - */ -static int cros_ec_flash_read_block(struct cros_ec_dev *dev, uint8_t *data, - uint32_t offset, uint32_t size) -{ - struct ec_params_flash_read p; - - p.offset = offset; - p.size = size; - - return ec_command(dev, EC_CMD_FLASH_READ, 0, - &p, sizeof(p), data, size) >= 0 ? 0 : -1; -} - -int cros_ec_flash_read(struct cros_ec_dev *dev, uint8_t *data, uint32_t offset, - uint32_t size) -{ - uint32_t burst = cros_ec_flash_write_burst_size(dev); - uint32_t end, off; - int ret; - - end = offset + size; - for (off = offset; off < end; off += burst, data += burst) { - ret = cros_ec_flash_read_block(dev, data, off, - min(end - off, burst)); - if (ret) - return ret; - } - - return 0; -} - -int cros_ec_flash_update_rw(struct cros_ec_dev *dev, - const uint8_t *image, int image_size) -{ - uint32_t rw_offset, rw_size; - int ret; - - if (cros_ec_flash_offset(dev, EC_FLASH_REGION_RW, &rw_offset, &rw_size)) - return -1; - if (image_size > (int)rw_size) - return -1; - - /* Invalidate the existing hash, just in case the AP reboots - * unexpectedly during the update. If that happened, the EC RW firmware - * would be invalid, but the EC would still have the original hash. - */ - ret = cros_ec_invalidate_hash(dev); - if (ret) - return ret; - - /* - * Erase the entire RW section, so that the EC doesn't see any garbage - * past the new image if it's smaller than the current image. - * - * TODO: could optimize this to erase just the current image, since - * presumably everything past that is 0xff's. But would still need to - * round up to the nearest multiple of erase size. - */ - ret = cros_ec_flash_erase(dev, rw_offset, rw_size); - if (ret) - return ret; - - /* Write the image */ - ret = cros_ec_flash_write(dev, image, rw_offset, image_size); - if (ret) - return ret; - - return 0; -} - -int cros_ec_read_vbnvcontext(struct cros_ec_dev *dev, uint8_t *block) -{ - struct ec_params_vbnvcontext p; - int len; - - p.op = EC_VBNV_CONTEXT_OP_READ; - - len = ec_command(dev, EC_CMD_VBNV_CONTEXT, EC_VER_VBNV_CONTEXT, - &p, sizeof(p), block, EC_VBNV_BLOCK_SIZE); - if (len < EC_VBNV_BLOCK_SIZE) - return -1; - - return 0; -} - -int cros_ec_write_vbnvcontext(struct cros_ec_dev *dev, const uint8_t *block) -{ - struct ec_params_vbnvcontext p; - int len; - - p.op = EC_VBNV_CONTEXT_OP_WRITE; - memcpy(p.block, block, sizeof(p.block)); - - len = ec_command_inptr(dev, EC_CMD_VBNV_CONTEXT, EC_VER_VBNV_CONTEXT, - &p, sizeof(p), NULL, 0); - if (len < 0) - return -1; - - return 0; -} - -int cros_ec_set_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t state) -{ - struct ec_params_ldo_set params; - - params.index = index; - params.state = state; - - if (ec_command_inptr(dev, EC_CMD_LDO_SET, 0, - ¶ms, sizeof(params), - NULL, 0)) - return -1; - - return 0; -} - -int cros_ec_get_ldo(struct cros_ec_dev *dev, uint8_t index, uint8_t *state) -{ - struct ec_params_ldo_get params; - struct ec_response_ldo_get *resp; - - params.index = index; - - if (ec_command_inptr(dev, EC_CMD_LDO_GET, 0, - ¶ms, sizeof(params), - (uint8_t **)&resp, sizeof(*resp)) != sizeof(*resp)) - return -1; - - *state = resp->state; - - return 0; -} - -/** - * Decode EC interface details from the device tree and allocate a suitable - * device. - * - * @param blob Device tree blob - * @param node Node to decode from - * @param devp Returns a pointer to the new allocated device - * @return 0 if ok, -1 on error - */ -static int cros_ec_decode_fdt(const void *blob, int node, - struct cros_ec_dev **devp) -{ - enum fdt_compat_id compat; - struct cros_ec_dev *dev; - int parent; - - /* See what type of parent we are inside (this is expensive) */ - parent = fdt_parent_offset(blob, node); - if (parent < 0) { - debug("%s: Cannot find node parent\n", __func__); - return -1; - } - - dev = &static_dev; - dev->node = node; - dev->parent_node = parent; - - compat = fdtdec_lookup(blob, parent); - switch (compat) { -#ifdef CONFIG_CROS_EC_SPI - case COMPAT_SAMSUNG_EXYNOS_SPI: - dev->interface = CROS_EC_IF_SPI; - if (cros_ec_spi_decode_fdt(dev, blob)) - return -1; - break; -#endif -#ifdef CONFIG_CROS_EC_I2C - case COMPAT_SAMSUNG_S3C2440_I2C: - dev->interface = CROS_EC_IF_I2C; - if (cros_ec_i2c_decode_fdt(dev, blob)) - return -1; - break; -#endif -#ifdef CONFIG_CROS_EC_LPC - case COMPAT_INTEL_LPC: - dev->interface = CROS_EC_IF_LPC; - break; -#endif -#ifdef CONFIG_CROS_EC_SANDBOX - case COMPAT_SANDBOX_HOST_EMULATION: - dev->interface = CROS_EC_IF_SANDBOX; - break; -#endif - default: - debug("%s: Unknown compat id %d\n", __func__, compat); - return -1; - } - - fdtdec_decode_gpio(blob, node, "ec-interrupt", &dev->ec_int); - dev->optimise_flash_write = fdtdec_get_bool(blob, node, - "optimise-flash-write"); - *devp = dev; - - return 0; -} - -int cros_ec_init(const void *blob, struct cros_ec_dev **cros_ecp) -{ - char id[MSG_BYTES]; - struct cros_ec_dev *dev; - int node = 0; - - *cros_ecp = NULL; - do { - node = fdtdec_next_compatible(blob, node, - COMPAT_GOOGLE_CROS_EC); - if (node < 0) { - debug("%s: Node not found\n", __func__); - return 0; - } - } while (!fdtdec_get_is_enabled(blob, node)); - - if (cros_ec_decode_fdt(blob, node, &dev)) { - debug("%s: Failed to decode device.\n", __func__); - return -CROS_EC_ERR_FDT_DECODE; - } - - switch (dev->interface) { -#ifdef CONFIG_CROS_EC_SPI - case CROS_EC_IF_SPI: - if (cros_ec_spi_init(dev, blob)) { - debug("%s: Could not setup SPI interface\n", __func__); - return -CROS_EC_ERR_DEV_INIT; - } - break; -#endif -#ifdef CONFIG_CROS_EC_I2C - case CROS_EC_IF_I2C: - if (cros_ec_i2c_init(dev, blob)) - return -CROS_EC_ERR_DEV_INIT; - break; -#endif -#ifdef CONFIG_CROS_EC_LPC - case CROS_EC_IF_LPC: - if (cros_ec_lpc_init(dev, blob)) - return -CROS_EC_ERR_DEV_INIT; - break; -#endif -#ifdef CONFIG_CROS_EC_SANDBOX - case CROS_EC_IF_SANDBOX: - if (cros_ec_sandbox_init(dev, blob)) - return -CROS_EC_ERR_DEV_INIT; - break; -#endif - case CROS_EC_IF_NONE: - default: - return 0; - } - - /* we will poll the EC interrupt line */ - fdtdec_setup_gpio(&dev->ec_int); - if (fdt_gpio_isvalid(&dev->ec_int)) - gpio_direction_input(dev->ec_int.gpio); - - if (cros_ec_check_version(dev)) { - debug("%s: Could not detect CROS-EC version\n", __func__); - return -CROS_EC_ERR_CHECK_VERSION; - } - - if (cros_ec_read_id(dev, id, sizeof(id))) { - debug("%s: Could not read KBC ID\n", __func__); - return -CROS_EC_ERR_READ_ID; - } - - /* Remember this device for use by the cros_ec command */ - last_dev = *cros_ecp = dev; - debug("Google Chrome EC CROS-EC driver ready, id '%s'\n", id); - - return 0; -} - -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'\n", __func__, *argv); - } else { - debug("%s: Missing region parameter\n", __func__); - } - - return -1; -} - -int cros_ec_decode_ec_flash(const void *blob, struct fdt_cros_ec *config) -{ - int flash_node, node; - - node = fdtdec_next_compatible(blob, 0, COMPAT_GOOGLE_CROS_EC); - if (node < 0) { - debug("Failed to find chrome-ec node'\n"); - return -1; - } - - flash_node = fdt_subnode_offset(blob, node, "flash"); - if (flash_node < 0) { - debug("Failed to find flash node\n"); - return -1; - } - - if (fdtdec_read_fmap_entry(blob, flash_node, "flash", - &config->flash)) { - debug("Failed to decode flash node in chrome-ec'\n"); - return -1; - } - - config->flash_erase_value = fdtdec_get_int(blob, flash_node, - "erase-value", -1); - for (node = fdt_first_subnode(blob, flash_node); node >= 0; - node = fdt_next_subnode(blob, node)) { - const char *name = fdt_get_name(blob, node, NULL); - enum ec_flash_region region; - - if (0 == strcmp(name, "ro")) { - region = EC_FLASH_REGION_RO; - } else if (0 == strcmp(name, "rw")) { - region = EC_FLASH_REGION_RW; - } else if (0 == strcmp(name, "wp-ro")) { - region = EC_FLASH_REGION_WP_RO; - } else { - debug("Unknown EC flash region name '%s'\n", name); - return -1; - } - - if (fdtdec_read_fmap_entry(blob, node, "reg", - &config->region[region])) { - debug("Failed to decode flash region in chrome-ec'\n"); - return -1; - } - } - - return 0; -} - -int cros_ec_i2c_xfer(struct cros_ec_dev *dev, uchar chip, uint addr, - int alen, uchar *buffer, int len, int is_read) -{ - union { - struct ec_params_i2c_passthru p; - uint8_t outbuf[EC_PROTO2_MAX_PARAM_SIZE]; - } params; - union { - struct ec_response_i2c_passthru r; - uint8_t inbuf[EC_PROTO2_MAX_PARAM_SIZE]; - } response; - struct ec_params_i2c_passthru *p = ¶ms.p; - struct ec_response_i2c_passthru *r = &response.r; - struct ec_params_i2c_passthru_msg *msg = p->msg; - uint8_t *pdata; - int read_len, write_len; - int size; - int rv; - - p->port = 0; - - if (alen != 1) { - printf("Unsupported address length %d\n", alen); - return -1; - } - if (is_read) { - read_len = len; - write_len = alen; - p->num_msgs = 2; - } else { - read_len = 0; - write_len = alen + len; - p->num_msgs = 1; - } - - size = sizeof(*p) + p->num_msgs * sizeof(*msg); - if (size + write_len > sizeof(params)) { - puts("Params too large for buffer\n"); - return -1; - } - if (sizeof(*r) + read_len > sizeof(response)) { - puts("Read length too big for buffer\n"); - return -1; - } - - /* Create a message to write the register address and optional data */ - pdata = (uint8_t *)p + size; - msg->addr_flags = chip; - msg->len = write_len; - pdata[0] = addr; - if (!is_read) - memcpy(pdata + 1, buffer, len); - msg++; - - if (read_len) { - msg->addr_flags = chip | EC_I2C_FLAG_READ; - msg->len = read_len; - } - - rv = ec_command(dev, EC_CMD_I2C_PASSTHRU, 0, p, size + write_len, - r, sizeof(*r) + read_len); - if (rv < 0) - return rv; - - /* Parse response */ - if (r->i2c_status & EC_I2C_STATUS_ERROR) { - printf("Transfer failed with status=0x%x\n", r->i2c_status); - return -1; - } - - if (rv < sizeof(*r) + read_len) { - puts("Truncated read response\n"); - return -1; - } - - if (read_len) - memcpy(buffer, r->data, read_len); - - 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, ®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; -} - -/** - * get_alen() - Small parser helper function to get address length - * - * Returns the address length. - */ -static uint get_alen(char *arg) -{ - int j; - int alen; - - alen = 1; - for (j = 0; j < 8; j++) { - if (arg[j] == '.') { - alen = arg[j+1] - '0'; - break; - } else if (arg[j] == '\0') { - break; - } - } - return alen; -} - -#define DISP_LINE_LEN 16 - -/* - * TODO(sjg@chromium.org): This code copied almost verbatim from cmd_i2c.c - * so we can remove it later. - */ -static int cros_ec_i2c_md(struct cros_ec_dev *dev, int flag, int argc, - char * const argv[]) -{ - u_char chip; - uint addr, alen, length = 0x10; - int j, nbytes, linebytes; - - if (argc < 2) - return CMD_RET_USAGE; - - if (1 || (flag & CMD_FLAG_REPEAT) == 0) { - /* - * New command specified. - */ - - /* - * I2C chip address - */ - chip = simple_strtoul(argv[0], NULL, 16); - - /* - * I2C data address within the chip. This can be 1 or - * 2 bytes long. Some day it might be 3 bytes long :-). - */ - addr = simple_strtoul(argv[1], NULL, 16); - alen = get_alen(argv[1]); - if (alen > 3) - return CMD_RET_USAGE; - - /* - * If another parameter, it is the length to display. - * Length is the number of objects, not number of bytes. - */ - if (argc > 2) - length = simple_strtoul(argv[2], NULL, 16); - } - - /* - * Print the lines. - * - * We buffer all read data, so we can make sure data is read only - * once. - */ - nbytes = length; - do { - unsigned char linebuf[DISP_LINE_LEN]; - unsigned char *cp; - - linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; - - if (cros_ec_i2c_xfer(dev, chip, addr, alen, linebuf, linebytes, - 1)) - puts("Error reading the chip.\n"); - else { - printf("%04x:", addr); - cp = linebuf; - for (j = 0; j < linebytes; j++) { - printf(" %02x", *cp++); - addr++; - } - puts(" "); - cp = linebuf; - for (j = 0; j < linebytes; j++) { - if ((*cp < 0x20) || (*cp > 0x7e)) - puts("."); - else - printf("%c", *cp); - cp++; - } - putc('\n'); - } - nbytes -= linebytes; - } while (nbytes > 0); - - return 0; -} - -static int cros_ec_i2c_mw(struct cros_ec_dev *dev, int flag, int argc, - char * const argv[]) -{ - uchar chip; - ulong addr; - uint alen; - uchar byte; - int count; - - if ((argc < 3) || (argc > 4)) - return CMD_RET_USAGE; - - /* - * Chip is always specified. - */ - chip = simple_strtoul(argv[0], NULL, 16); - - /* - * Address is always specified. - */ - addr = simple_strtoul(argv[1], NULL, 16); - alen = get_alen(argv[1]); - if (alen > 3) - return CMD_RET_USAGE; - - /* - * Value to write is always specified. - */ - byte = simple_strtoul(argv[2], NULL, 16); - - /* - * Optional count - */ - if (argc == 4) - count = simple_strtoul(argv[3], NULL, 16); - else - count = 1; - - while (count-- > 0) { - if (cros_ec_i2c_xfer(dev, chip, addr++, alen, &byte, 1, 0)) - puts("Error writing the chip.\n"); - /* - * Wait for the write to complete. The write can take - * up to 10mSec (we allow a little more time). - */ -/* - * No write delay with FRAM devices. - */ -#if !defined(CONFIG_SYS_I2C_FRAM) - udelay(11000); -#endif - } - - return 0; -} - -/* Temporary code until we have driver model and can use the i2c command */ -static int cros_ec_i2c_passthrough(struct cros_ec_dev *dev, int flag, - int argc, char * const argv[]) -{ - const char *cmd; - - if (argc < 1) - return CMD_RET_USAGE; - cmd = *argv++; - argc--; - if (0 == strcmp("md", cmd)) - cros_ec_i2c_md(dev, flag, argc, argv); - else if (0 == strcmp("mw", cmd)) - cros_ec_i2c_mw(dev, flag, argc, argv); - else - return CMD_RET_USAGE; - - return 0; -} - -static int do_cros_ec(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) -{ - struct cros_ec_dev *dev = last_dev; - const char *cmd; - int ret = 0; - - if (argc < 2) - return CMD_RET_USAGE; - - cmd = argv[1]; - if (0 == strcmp("init", cmd)) { - ret = cros_ec_init(gd->fdt_blob, &dev); - if (ret) { - printf("Could not init cros_ec device (err %d)\n", ret); - return 1; - } - return 0; - } - - /* Just use the last allocated device; there should be only one */ - if (!last_dev) { - printf("No CROS-EC device available\n"); - 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); - 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(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 if (0 == strcmp("i2c", cmd)) { - ret = cros_ec_i2c_passthrough(dev, flag, argc - 2, argv + 2); - } 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\n" - "crosec i2c md chip address[.0, .1, .2] [# of objects] - read from I2C passthru\n" - "crosec i2c mw chip address[.0, .1, .2] value [count] - write to I2C passthru (fill)" -); -#endif |