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/* 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"
#include "ec_commands.h"
#define CBI_VERSION_MAJOR 0
#define CBI_VERSION_MINOR 0
#define CBI_EEPROM_SIZE 256
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;
/* List of data items (i.e. struct cbi_data[]) */
uint8_t data[];
} __attribute__((packed));
struct cbi_data {
uint8_t tag; /* enum cbi_data_tag */
uint8_t size; /* size of value[] */
uint8_t value[]; /* data value */
} __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);
/**
* Primitive accessors
*
* @param tag Tag of the target data.
* @param buf Buffer where data is passed.
* @param size (IN) Size of <buf>. (OUT) Size of the data returned.
* @return EC_SUCCESS on success or EC_ERROR_* otherwise.
*/
int cbi_get_board_info(enum cbi_data_tag tag, uint8_t *buf, uint8_t *size);
int cbi_set_board_info(enum cbi_data_tag tag, const uint8_t *buf, uint8_t size);
#endif /* __CROS_EC_CROS_BOARD_INFO_H */
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