mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 17:08:52 +09:00
153 lines
4.3 KiB
C
153 lines
4.3 KiB
C
![]() |
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
/*
|
||
|
* See file CREDITS for list of people who contributed to this
|
||
|
* project.
|
||
|
*/
|
||
|
|
||
|
#ifndef __TLV_EEPROM_H_
|
||
|
#define __TLV_EEPROM_H_
|
||
|
|
||
|
/*
|
||
|
* The Definition of the TlvInfo EEPROM format can be found at onie.org or
|
||
|
* github.com/onie
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
* TlvInfo header: Layout of the header for the TlvInfo format
|
||
|
*
|
||
|
* See the end of this file for details of this eeprom format
|
||
|
*/
|
||
|
struct __attribute__ ((__packed__)) tlvinfo_header {
|
||
|
char signature[8]; /* 0x00 - 0x07 EEPROM Tag "TlvInfo" */
|
||
|
u8 version; /* 0x08 Structure version */
|
||
|
u16 totallen; /* 0x09 - 0x0A Length of all data which follows */
|
||
|
};
|
||
|
|
||
|
// Header Field Constants
|
||
|
#define TLV_INFO_ID_STRING "TlvInfo"
|
||
|
#define TLV_INFO_VERSION 0x01
|
||
|
#define TLV_INFO_MAX_LEN 2048
|
||
|
#define TLV_TOTAL_LEN_MAX (TLV_INFO_MAX_LEN - \
|
||
|
sizeof(struct tlvinfo_header))
|
||
|
|
||
|
/*
|
||
|
* TlvInfo TLV: Layout of a TLV field
|
||
|
*/
|
||
|
struct __attribute__ ((__packed__)) tlvinfo_tlv {
|
||
|
u8 type;
|
||
|
u8 length;
|
||
|
u8 value[0];
|
||
|
};
|
||
|
|
||
|
/* Maximum length of a TLV value in bytes */
|
||
|
#define TLV_VALUE_MAX_LEN 255
|
||
|
|
||
|
/**
|
||
|
* The TLV Types.
|
||
|
*
|
||
|
* Keep these in sync with tlv_code_list in cmd/tlv_eeprom.c
|
||
|
*/
|
||
|
#define TLV_CODE_PRODUCT_NAME 0x21
|
||
|
#define TLV_CODE_PART_NUMBER 0x22
|
||
|
#define TLV_CODE_SERIAL_NUMBER 0x23
|
||
|
#define TLV_CODE_MAC_BASE 0x24
|
||
|
#define TLV_CODE_MANUF_DATE 0x25
|
||
|
#define TLV_CODE_DEVICE_VERSION 0x26
|
||
|
#define TLV_CODE_LABEL_REVISION 0x27
|
||
|
#define TLV_CODE_PLATFORM_NAME 0x28
|
||
|
#define TLV_CODE_ONIE_VERSION 0x29
|
||
|
#define TLV_CODE_MAC_SIZE 0x2A
|
||
|
#define TLV_CODE_MANUF_NAME 0x2B
|
||
|
#define TLV_CODE_MANUF_COUNTRY 0x2C
|
||
|
#define TLV_CODE_VENDOR_NAME 0x2D
|
||
|
#define TLV_CODE_DIAG_VERSION 0x2E
|
||
|
#define TLV_CODE_SERVICE_TAG 0x2F
|
||
|
#define TLV_CODE_VENDOR_EXT 0xFD
|
||
|
#define TLV_CODE_CRC_32 0xFE
|
||
|
|
||
|
#if CONFIG_IS_ENABLED(CMD_TLV_EEPROM)
|
||
|
|
||
|
/**
|
||
|
* read_tlv_eeprom - Read the EEPROM binary data from the hardware
|
||
|
* @eeprom: Pointer to buffer to hold the binary data
|
||
|
* @offset: Offset within EEPROM block to read data from
|
||
|
* @len : Maximum size of buffer
|
||
|
* @dev : EEPROM device to read
|
||
|
*
|
||
|
* Note: this routine does not validate the EEPROM data.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
int read_tlv_eeprom(void *eeprom, int offset, int len, int dev);
|
||
|
|
||
|
/**
|
||
|
* write_tlv_eeprom - Write the entire EEPROM binary data to the hardware
|
||
|
* @eeprom: Pointer to buffer to hold the binary data
|
||
|
* @len : Maximum size of buffer
|
||
|
*
|
||
|
* Note: this routine does not validate the EEPROM data.
|
||
|
*
|
||
|
*/
|
||
|
int write_tlv_eeprom(void *eeprom, int len);
|
||
|
|
||
|
/**
|
||
|
* read_tlvinfo_tlv_eeprom - Read the TLV from EEPROM, and validate
|
||
|
* @eeprom: Pointer to buffer to hold the binary data. Must point to a buffer
|
||
|
* of size at least TLV_INFO_MAX_LEN.
|
||
|
* @hdr : Points to pointer to TLV header (output)
|
||
|
* @first_entry : Points to pointer to first TLV entry (output)
|
||
|
* @dev : EEPROM device to read
|
||
|
*
|
||
|
* Store the raw EEPROM data from EEPROM @dev in the @eeprom buffer. If TLV is
|
||
|
* valid set *@hdr and *@first_entry.
|
||
|
*
|
||
|
* Returns 0 when read from EEPROM is successful, and the data is valid.
|
||
|
* Returns <0 error value when EEPROM read fails. Return -EINVAL when TLV is
|
||
|
* invalid.
|
||
|
*
|
||
|
*/
|
||
|
|
||
|
int read_tlvinfo_tlv_eeprom(void *eeprom, struct tlvinfo_header **hdr,
|
||
|
struct tlvinfo_tlv **first_entry, int dev);
|
||
|
|
||
|
#else /* !CONFIG_IS_ENABLED(CMD_TLV_EEPROM) */
|
||
|
|
||
|
static inline int read_tlv_eeprom(void *eeprom, int offset, int len, int dev)
|
||
|
{
|
||
|
return -ENOTSUPP;
|
||
|
}
|
||
|
|
||
|
static inline int write_tlv_eeprom(void *eeprom, int len)
|
||
|
{
|
||
|
return -ENOTSUPP;
|
||
|
}
|
||
|
|
||
|
static inline int
|
||
|
read_tlvinfo_tlv_eeprom(void *eeprom, struct tlvinfo_header **hdr,
|
||
|
struct tlvinfo_tlv **first_entry, int dev)
|
||
|
{
|
||
|
return -ENOTSUPP;
|
||
|
}
|
||
|
|
||
|
#endif /* CONFIG_IS_ENABLED(CMD_TLV_EEPROM) */
|
||
|
|
||
|
/**
|
||
|
* is_valid_tlvinfo_header
|
||
|
*
|
||
|
* Perform sanity checks on the first 11 bytes of the TlvInfo EEPROM
|
||
|
* data pointed to by the parameter:
|
||
|
* 1. First 8 bytes contain null-terminated ASCII string "TlvInfo"
|
||
|
* 2. Version byte is 1
|
||
|
* 3. Total length bytes contain value which is less than or equal
|
||
|
* to the allowed maximum (2048-11)
|
||
|
*
|
||
|
*/
|
||
|
static inline bool is_valid_tlvinfo_header(struct tlvinfo_header *hdr)
|
||
|
{
|
||
|
return ((strcmp(hdr->signature, TLV_INFO_ID_STRING) == 0) &&
|
||
|
(hdr->version == TLV_INFO_VERSION) &&
|
||
|
(be16_to_cpu(hdr->totallen) <= TLV_TOTAL_LEN_MAX));
|
||
|
}
|
||
|
|
||
|
#endif /* __TLV_EEPROM_H_ */
|