diff options
| author | Daisuke Nojiri <dnojiri@chromium.org> | 2017-10-03 18:28:57 -0700 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2018-01-18 05:09:29 -0800 |
| commit | 6e3e0f87b1384b7adaece5d37887b96b0fdf89dd (patch) | |
| tree | b00fd662834f3b50ddb9437e29e1d40afa96ff75 /include | |
| parent | a0f25e398ec74b455953833a5e73bd0e8f71feed (diff) | |
| download | chrome-ec-6e3e0f87b1384b7adaece5d37887b96b0fdf89dd.tar.gz | |
CBI: Read board info from EEPROM
This patch adds Cros Board Info APIs. It reads board info from EEPROM.
This patch sets CONFIG_CBI for Fizz to make it use CBI.
BUG=b:70294260
BRANCH=none
TEST=Read data from EEPROM.
Change-Id: I7eb4323188817d46b0450f1d65ac34d1b7e4e220
Reviewed-on: https://chromium-review.googlesource.com/707741
Commit-Ready: Daisuke Nojiri <dnojiri@chromium.org>
Tested-by: Daisuke Nojiri <dnojiri@chromium.org>
Reviewed-by: Daisuke Nojiri <dnojiri@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/config.h | 6 | ||||
| -rw-r--r-- | include/cros_board_info.h | 60 |
2 files changed, 66 insertions, 0 deletions
diff --git a/include/config.h b/include/config.h index 5126164767..cb2dc59f81 100644 --- a/include/config.h +++ b/include/config.h @@ -3118,6 +3118,12 @@ */ #undef CONFIG_BOARD_ID_SUPPORT +/* + * Define this to enable Cros Board Info support. I2C_EEPROM_PORT and + * I2C_EEPROM_ADDR must be defined as well. + */ +#undef CONFIG_CROS_BOARD_INFO + /*****************************************************************************/ /* * Include board and core configs, since those hold the CONFIG_ constants for a diff --git a/include/cros_board_info.h b/include/cros_board_info.h new file mode 100644 index 0000000000..8d140f1d25 --- /dev/null +++ b/include/cros_board_info.h @@ -0,0 +1,60 @@ +/* Copyright 2018 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. + * + * Cros Board Info + */ +#ifndef __CROS_EC_CROS_BOARD_INFO_H +#define __CROS_EC_CROS_BOARD_INFO_H + +#include "common.h" + +#define CBI_VERSION_MAJOR 0 +#define CBI_VERSION_MINOR 0 +static const uint8_t cbi_magic[] = { 0x43, 0x42, 0x49 }; /* 'C' 'B' 'I' */ + +struct cbi_header { + uint8_t magic[3]; + /* CRC of 'struct board_info' excluding magic and crc */ + uint8_t crc; + /* Data format version. Parsers are expected to process data as long + * as major version is equal or younger. */ + union { + struct { + uint8_t minor_version; + uint8_t major_version; + }; + uint16_t version; + }; + /* Total size of data. It can be larger than sizeof(struct board_info) + * if future versions add additional fields. */ + uint16_t total_size; +} __attribute__((packed)); + +struct board_info { + struct cbi_header head; + /* Board version */ + union { + struct { + uint8_t minor_version; + uint8_t major_version; + }; + uint16_t version; + }; + /* OEM ID */ + uint8_t oem_id; + /* SKU ID */ + uint8_t sku_id; +} __attribute__((packed)); + +/** + * Board info accessors + * + * @param version/sku_id/oem_id [OUT] Data read from EEPROM + * @return EC_SUCCESS on success or EC_ERROR_* otherwise. + */ +int cbi_get_board_version(uint32_t *version); +int cbi_get_sku_id(uint32_t *sku_id); +int cbi_get_oem_id(uint32_t *oem_id); + +#endif /* __CROS_EC_CROS_BOARD_INFO_H */ |