board/ti/common/board_detect.h - platform/external/u-boot - Gitiles

 /* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * Library to support early TI EVM EEPROM handling
  *
  * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com
  */

 #ifndef __BOARD_DETECT_H
 #define __BOARD_DETECT_H

 /* TI EEPROM MAGIC Header identifier */
 #include <linux/bitops.h>
 #define TI_EEPROM_HEADER_MAGIC	0xEE3355AA
 #define TI_DEAD_EEPROM_MAGIC	0xADEAD12C

 #define TI_EEPROM_HDR_NAME_LEN		8
 #define TI_EEPROM_HDR_REV_LEN		4
 #define TI_EEPROM_HDR_SERIAL_LEN	12
 #define TI_EEPROM_HDR_CONFIG_LEN	32
 #define TI_EEPROM_HDR_NO_OF_MAC_ADDR	3
 #define TI_EEPROM_HDR_ETH_ALEN		6

 /**
  * struct ti_am_eeprom - This structure holds data read in from the
  *                     AM335x, AM437x, AM57xx TI EVM EEPROMs.
  * @header: This holds the magic number
  * @name: The name of the board
  * @version: Board revision
  * @serial: Board serial number
  * @config: Reserved
  * @mac_addr: Any MAC addresses written in the EEPROM
  *
  * The data is this structure is read from the EEPROM on the board.
  * It is used for board detection which is based on name. It is used
  * to configure specific TI boards. This allows booting of multiple
  * TI boards with a single MLO and u-boot.
  */
 struct ti_am_eeprom {
 	unsigned int header;
 	char name[TI_EEPROM_HDR_NAME_LEN];
 	char version[TI_EEPROM_HDR_REV_LEN];
 	char serial[TI_EEPROM_HDR_SERIAL_LEN];
 	char config[TI_EEPROM_HDR_CONFIG_LEN];
 	char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
 } __attribute__ ((__packed__));

 /* AM6x TI EVM EEPROM Definitions */
 #define TI_AM6_EEPROM_RECORD_BOARD_ID		0x01
 #define TI_AM6_EEPROM_RECORD_BOARD_INFO		0x10
 #define TI_AM6_EEPROM_RECORD_DDR_INFO		0x11
 #define TI_AM6_EEPROM_RECORD_DDR_SPD		0x12
 #define TI_AM6_EEPROM_RECORD_MAC_INFO		0x13
 #define TI_AM6_EEPROM_RECORD_END_LIST		0xFE

 /*
  * Common header for AM6x TI EVM EEPROM records. Used to encapsulate the config
  * EEPROM in its entirety as well as for individual records contained within.
  */
 struct ti_am6_eeprom_record_header {
 	u8 id;
 	u16 len;
 } __attribute__ ((__packed__));

 /* AM6x TI EVM EEPROM board ID structure */
 struct ti_am6_eeprom_record_board_id {
 	u32 magic_number;
 	struct ti_am6_eeprom_record_header header;
 } __attribute__ ((__packed__));

 /* AM6x TI EVM EEPROM board info structure */
 #define AM6_EEPROM_HDR_NAME_LEN			16
 #define AM6_EEPROM_HDR_VERSION_LEN		2
 #define AM6_EEPROM_HDR_PROC_NR_LEN		4
 #define AM6_EEPROM_HDR_VARIANT_LEN		2
 #define AM6_EEPROM_HDR_PCB_REV_LEN		2
 #define AM6_EEPROM_HDR_SCH_BOM_REV_LEN		2
 #define AM6_EEPROM_HDR_SW_REV_LEN		2
 #define AM6_EEPROM_HDR_VID_LEN			2
 #define AM6_EEPROM_HDR_BLD_WK_LEN		2
 #define AM6_EEPROM_HDR_BLD_YR_LEN		2
 #define AM6_EEPROM_HDR_4P_NR_LEN		6
 #define AM6_EEPROM_HDR_SERIAL_LEN		4

 struct ti_am6_eeprom_record_board_info {
 	char name[AM6_EEPROM_HDR_NAME_LEN];
 	char version[AM6_EEPROM_HDR_VERSION_LEN];
 	char proc_number[AM6_EEPROM_HDR_PROC_NR_LEN];
 	char variant[AM6_EEPROM_HDR_VARIANT_LEN];
 	char pcb_revision[AM6_EEPROM_HDR_PCB_REV_LEN];
 	char schematic_bom_revision[AM6_EEPROM_HDR_SCH_BOM_REV_LEN];
 	char software_revision[AM6_EEPROM_HDR_SW_REV_LEN];
 	char vendor_id[AM6_EEPROM_HDR_VID_LEN];
 	char build_week[AM6_EEPROM_HDR_BLD_WK_LEN];
 	char build_year[AM6_EEPROM_HDR_BLD_YR_LEN];
 	char board_4p_number[AM6_EEPROM_HDR_4P_NR_LEN];
 	char serial[AM6_EEPROM_HDR_SERIAL_LEN];
 } __attribute__ ((__packed__));

 /* Memory location to keep a copy of the AM6 board info record */
 #define TI_AM6_EEPROM_BD_INFO_DATA ((struct ti_am6_eeprom_record_board_info *) \
 					     TI_SRAM_SCRATCH_BOARD_EEPROM_START)

 /* AM6x TI EVM EEPROM DDR info structure */
 #define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_MASK		GENMASK(1, 0)
 #define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_SHIFT		0
 #define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_MASK	GENMASK(3, 2)
 #define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_NA		(0 << 2)
 #define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_BOARDID	(2 << 2)
 #define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_I2C51	(3 << 2)
 #define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_MASK		GENMASK(5, 4)
 #define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR3		(0 << 4)
 #define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR4		(1 << 4)
 #define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_LPDDR4		(2 << 4)
 #define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_MASK	GENMASK(7, 6)
 #define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_16		(0 << 6)
 #define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_32		(1 << 6)
 #define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_64		(2 << 6)
 #define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_MASK	GENMASK(9, 8)
 #define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_8		(0 << 8)
 #define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_16	(1 << 8)
 #define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_32	(2 << 8)
 #define TI_AM6_EEPROM_DDR_CTRL_RANKS_2			BIT(10)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_MASK		GENMASK(13, 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_1GB			(0 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_2GB			(1 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_4GB			(2 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_8GB			(3 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_12GB		(4 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_16GB		(5 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_24GB		(6 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_DENS_32GB		(7 << 11)
 #define TI_AM6_EEPROM_DDR_CTRL_ECC			BIT(14)

 struct ti_am6_eeprom_record_ddr_info {
 	u16 ddr_control;
 } __attribute__ ((__packed__));

 /* AM6x TI EVM EEPROM DDR SPD structure */
 #define TI_AM6_EEPROM_DDR_SPD_INSTANCE_MASK		GENMASK(1, 0)
 #define TI_AM6_EEPROM_DDR_SPD_INSTANCE_SHIFT		0
 #define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_MASK		GENMASK(4, 3)
 #define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR3		(0 << 3)
 #define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR4		(1 << 3)
 #define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_LPDDR4		(2 << 3)
 #define TI_AM6_EEPROM_DDR_SPD_DATA_LEN			512

 struct ti_am6_eeprom_record_ddr_spd {
 	u16 spd_control;
 	u8 data[TI_AM6_EEPROM_DDR_SPD_DATA_LEN];
 } __attribute__ ((__packed__));

 /* AM6x TI EVM EEPROM MAC info structure */
 #define TI_AM6_EEPROM_MAC_INFO_INSTANCE_MASK		GENMASK(2, 0)
 #define TI_AM6_EEPROM_MAC_INFO_INSTANCE_SHIFT		0
 #define TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK		GENMASK(7, 3)
 #define TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT		3
 #define TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT		32

 struct ti_am6_eeprom_record_mac_info {
 	u16 mac_control;
 	u8 mac_addr[TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT][TI_EEPROM_HDR_ETH_ALEN];
 } __attribute__ ((__packed__));

 struct ti_am6_eeprom_record {
 	struct ti_am6_eeprom_record_header header;
 	union {
 		struct ti_am6_eeprom_record_board_info board_info;
 		struct ti_am6_eeprom_record_ddr_info ddr_info;
 		struct ti_am6_eeprom_record_ddr_spd ddr_spd;
 		struct ti_am6_eeprom_record_mac_info mac_info;
 	} data;
 } __attribute__ ((__packed__));

 /* DRA7 EEPROM MAGIC Header identifier */
 #define DRA7_EEPROM_HEADER_MAGIC	0xAA5533EE
 #define DRA7_EEPROM_HDR_NAME_LEN	16
 #define DRA7_EEPROM_HDR_CONFIG_LEN	4

 /**
  * struct dra7_eeprom - This structure holds data read in from the DRA7 EVM
  *			EEPROMs.
  * @header: This holds the magic number
  * @name: The name of the board
  * @version_major: Board major version
  * @version_minor: Board minor version
  * @config: Board specific config options
  * @emif1_size: Size of DDR attached to EMIF1
  * @emif2_size: Size of DDR attached to EMIF2
  *
  * The data is this structure is read from the EEPROM on the board.
  * It is used for board detection which is based on name. It is used
  * to configure specific DRA7 boards. This allows booting of multiple
  * DRA7 boards with a single MLO and u-boot.
  */
 struct dra7_eeprom {
 	u32 header;
 	char name[DRA7_EEPROM_HDR_NAME_LEN];
 	u16 version_major;
 	u16 version_minor;
 	char config[DRA7_EEPROM_HDR_CONFIG_LEN];
 	u32 emif1_size;
 	u32 emif2_size;
 } __attribute__ ((__packed__));

 /**
  * struct ti_common_eeprom - Null terminated, usable EEPROM contents.
  * header:	Magic number
  * @name:	NULL terminated name
  * @version:	NULL terminated version
  * @serial:	NULL terminated serial number
  * @config:	NULL terminated Board specific config options
  * @mac_addr:	MAC addresses
  * @emif1_size:	Size of the ddr available on emif1
  * @emif2_size:	Size of the ddr available on emif2
  */
 struct ti_common_eeprom {
 	u32 header;
 	char name[TI_EEPROM_HDR_NAME_LEN + 1];
 	char version[TI_EEPROM_HDR_REV_LEN + 1];
 	char serial[TI_EEPROM_HDR_SERIAL_LEN + 1];
 	char config[TI_EEPROM_HDR_CONFIG_LEN + 1];
 	char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
 	u64 emif1_size;
 	u64 emif2_size;
 };

 #define TI_EEPROM_DATA ((struct ti_common_eeprom *)\
 				TI_SRAM_SCRATCH_BOARD_EEPROM_START)

 /*
  * Maximum number of Ethernet MAC addresses extracted from the AM6x on-board
  * EEPROM during the initial probe and carried forward in SRAM.
  */
 #define AM6_EEPROM_HDR_NO_OF_MAC_ADDR	8

 /**
  * struct ti_am6_eeprom - Null terminated, usable EEPROM contents, as extracted
  *	from the AM6 on-board EEPROM. Note that we only carry a subset of data
  *	at this time to be considerate about memory consumption.
  * @header:		Magic number for data validity indication
  * @name:		NULL terminated name
  * @version:		NULL terminated version
  * @software_revision:	NULL terminated software revision
  * @serial:		Board serial number
  * @mac_addr_cnt:	Number of MAC addresses stored in this object
  * @mac_addr:		MAC addresses
  */
 struct ti_am6_eeprom {
 	u32 header;
 	char name[AM6_EEPROM_HDR_NAME_LEN + 1];
 	char version[AM6_EEPROM_HDR_VERSION_LEN + 1];
 	char software_revision[AM6_EEPROM_HDR_SW_REV_LEN + 1];
 	char serial[AM6_EEPROM_HDR_SERIAL_LEN + 1];
 	u8 mac_addr_cnt;
 	char mac_addr[AM6_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
 };

 #define TI_AM6_EEPROM_DATA ((struct ti_am6_eeprom *) \
 				TI_SRAM_SCRATCH_BOARD_EEPROM_START)

 /**
  * ti_i2c_eeprom_am_get() - Consolidated eeprom data collection for AM* TI EVMs
  * @bus_addr:	I2C bus address
  * @dev_addr:	I2C slave address
  *
  * ep in SRAM is populated by the this AM generic function that consolidates
  * the basic initialization logic common across all AM* platforms.
  */
 int ti_i2c_eeprom_am_get(int bus_addr, int dev_addr);

 /**
  * ti_emmc_boardid_get() - Fetch board ID information from eMMC
  *
  * ep in SRAM is populated by the this function that is currently
  * based on BeagleBone AI, but could be made more general across AM*
  * platforms.
  */
 int __maybe_unused ti_emmc_boardid_get(void);

 /**
  * ti_i2c_eeprom_dra7_get() - Consolidated eeprom data for DRA7 TI EVMs
  * @bus_addr:	I2C bus address
  * @dev_addr:	I2C slave address
  */
 int ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr);

 /**
  * ti_i2c_eeprom_am6_get() - Consolidated eeprom data for AM6x TI EVMs and
  *			     associated daughter cards, parsed into user-
  *			     provided data structures
  * @bus_addr:	I2C bus address
  * @dev_addr:	I2C slave address
  * @ep:		Pointer to structure receiving AM6-specific header data
  * @mac_addr:	Pointer to memory receiving parsed MAC addresses. May be
  *		NULL to skip MAC parsing.
  * @mac_addr_max_cnt: Maximum number of MAC addresses that can be stored into
  *		      mac_addr. May be NULL to skip MAC parsing.
  * @mac_addr_cnt: Pointer to a location returning how many MAC addressed got
  *		  actually parsed.
  */
 int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
 					 struct ti_am6_eeprom *ep,
 					 char **mac_addr,
 					 u8 mac_addr_max_cnt,
 					 u8 *mac_addr_cnt);

 /**
  * ti_i2c_eeprom_am6_get_base() - Consolidated eeprom data for AM6x TI EVMs
  * @bus_addr:	I2C bus address
  * @dev_addr:	I2C slave address
  */
 int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr);

 /**
  * board_ti_is() - Board detection logic for TI EVMs
  * @name_tag:	Tag used in eeprom for the board
  *
  * Return: false if board information does not match OR eeprom wasn't read.
  *	   true otherwise
  */
 bool board_ti_is(char *name_tag);

 /**
  * board_ti_k3_is() - Board detection logic for TI K3 EVMs
  * @name_tag:	Tag used in eeprom for the board
  *
  * Return: false if board information does not match OR eeprom wasn't read.
  *	   true otherwise
  */
 bool board_ti_k3_is(char *name_tag);

 /**
  * board_ti_rev_is() - Compare board revision for TI EVMs
  * @rev_tag:	Revision tag to check in eeprom
  * @cmp_len:	How many chars to compare?
  *
  * NOTE: revision information is often messed up (hence the str len match) :(
  *
  * Return: false if board information does not match OR eeprom wasn't read.
  *	   true otherwise
  */
 bool board_ti_rev_is(char *rev_tag, int cmp_len);

 /**
  * board_ti_get_rev() - Get board revision for TI EVMs
  *
  * Return: Empty string if eeprom wasn't read.
  *	   Board revision otherwise
  */
 char *board_ti_get_rev(void);

 /**
  * board_ti_get_config() - Get board config for TI EVMs
  *
  * Return: Empty string if eeprom wasn't read.
  *	   Board config otherwise
  */
 char *board_ti_get_config(void);

 /**
  * board_ti_get_name() - Get board name for TI EVMs
  *
  * Return: Empty string if eeprom wasn't read.
  *	   Board name otherwise
  */
 char *board_ti_get_name(void);

 /**
  * board_ti_get_eth_mac_addr() - Get Ethernet MAC address from EEPROM MAC list
  * @index:	0 based index within the list of MAC addresses
  * @mac_addr:	MAC address contained at the index is returned here
  *
  * Does not sanity check the mac_addr. Whatever is stored in EEPROM is returned.
  */
 void board_ti_get_eth_mac_addr(int index, u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]);

 /**
  * board_ti_get_emif1_size() - Get size of the DDR on emif1 for TI EVMs
  *
  * Return: NULL if eeprom wasn't read or emif1_size is not available.
  */
 u64 board_ti_get_emif1_size(void);

 /**
  * board_ti_get_emif2_size() - Get size of the DDR on emif2 for TI EVMs
  *
  * Return: NULL if eeprom wasn't read or emif2_size is not available.
  */
 u64 board_ti_get_emif2_size(void);

 /**
  * set_board_info_env() - Setup commonly used board information environment vars
  * @name:	Name of the board
  *
  * If name is NULL, default_name is used.
  */
 void set_board_info_env(char *name);

 /**
  * set_board_info_env_am6() - Setup commonly used board information environment
  *			      vars for AM6-type boards
  * @name:	Name of the board
  *
  * If name is NULL, default_name is used.
  */
 void set_board_info_env_am6(char *name);

 /**
  * board_ti_set_ethaddr- Sets the ethaddr environment from EEPROM
  * @index: The first eth<index>addr environment variable to set
  *
  * EEPROM should be already read before calling this function.
  * The EEPROM contains 2 MAC addresses which define the MAC address
  * range (i.e. first and last MAC address).
  * This function sets the ethaddr environment variable for all
  * the available MAC addresses starting from eth<index>addr.
  */
 void board_ti_set_ethaddr(int index);

 /**
  * board_ti_am6_set_ethaddr- Sets the ethaddr environment from EEPROM
  * @index: The first eth<index>addr environment variable to set
  * @count: The number of MAC addresses to process
  *
  * EEPROM should be already read before calling this function. The EEPROM
  * contains n dedicated MAC addresses. This function sets the ethaddr
  * environment variable for all the available MAC addresses starting
  * from eth<index>addr.
  */
 void board_ti_am6_set_ethaddr(int index, int count);

 /**
  * board_ti_was_eeprom_read() - Check to see if the eeprom contents have been read
  *
  * This function is useful to determine if the eeprom has already been read and
  * its contents have already been loaded into memory. It utiltzes the magic
  * number that the header value is set to upon successful eeprom read.
  */
 bool board_ti_was_eeprom_read(void);

 /**
  * ti_i2c_eeprom_am_set() - Setup the eeprom data with predefined values
  * @name:	Name of the board
  * @rev:	Revision of the board
  *
  * In some cases such as in RTC-only mode, we are able to skip reading eeprom
  * and wasting i2c based initialization time by using predefined flags for
  * detecting what platform we are booting on. For those platforms, provide
  * a handy function to pre-program information.
  *
  * NOTE: many eeprom information such as serial number, mac address etc is not
  * available.
  *
  * Return: 0 if all went fine, else return error.
  */
 int ti_i2c_eeprom_am_set(const char *name, const char *rev);

 #endif	/* __BOARD_DETECT_H */
	/* SPDX-License-Identifier: GPL-2.0+ */
	/*
	* Library to support early TI EVM EEPROM handling
	*
	* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com
	*/

	#ifndef __BOARD_DETECT_H
	#define __BOARD_DETECT_H

	/* TI EEPROM MAGIC Header identifier */
	#include <linux/bitops.h>
	#define TI_EEPROM_HEADER_MAGIC 0xEE3355AA
	#define TI_DEAD_EEPROM_MAGIC 0xADEAD12C

	#define TI_EEPROM_HDR_NAME_LEN 8
	#define TI_EEPROM_HDR_REV_LEN 4
	#define TI_EEPROM_HDR_SERIAL_LEN 12
	#define TI_EEPROM_HDR_CONFIG_LEN 32
	#define TI_EEPROM_HDR_NO_OF_MAC_ADDR 3
	#define TI_EEPROM_HDR_ETH_ALEN 6

	/**
	* struct ti_am_eeprom - This structure holds data read in from the
	* AM335x, AM437x, AM57xx TI EVM EEPROMs.
	* @header: This holds the magic number
	* @name: The name of the board
	* @version: Board revision
	* @serial: Board serial number
	* @config: Reserved
	* @mac_addr: Any MAC addresses written in the EEPROM
	*
	* The data is this structure is read from the EEPROM on the board.
	* It is used for board detection which is based on name. It is used
	* to configure specific TI boards. This allows booting of multiple
	* TI boards with a single MLO and u-boot.
	*/
	struct ti_am_eeprom {
	unsigned int header;
	char name[TI_EEPROM_HDR_NAME_LEN];
	char version[TI_EEPROM_HDR_REV_LEN];
	char serial[TI_EEPROM_HDR_SERIAL_LEN];
	char config[TI_EEPROM_HDR_CONFIG_LEN];
	char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
	} __attribute__ ((__packed__));

	/* AM6x TI EVM EEPROM Definitions */
	#define TI_AM6_EEPROM_RECORD_BOARD_ID 0x01
	#define TI_AM6_EEPROM_RECORD_BOARD_INFO 0x10
	#define TI_AM6_EEPROM_RECORD_DDR_INFO 0x11
	#define TI_AM6_EEPROM_RECORD_DDR_SPD 0x12
	#define TI_AM6_EEPROM_RECORD_MAC_INFO 0x13
	#define TI_AM6_EEPROM_RECORD_END_LIST 0xFE

	/*
	* Common header for AM6x TI EVM EEPROM records. Used to encapsulate the config
	* EEPROM in its entirety as well as for individual records contained within.
	*/
	struct ti_am6_eeprom_record_header {
	u8 id;
	u16 len;
	} __attribute__ ((__packed__));

	/* AM6x TI EVM EEPROM board ID structure */
	struct ti_am6_eeprom_record_board_id {
	u32 magic_number;
	struct ti_am6_eeprom_record_header header;
	} __attribute__ ((__packed__));

	/* AM6x TI EVM EEPROM board info structure */
	#define AM6_EEPROM_HDR_NAME_LEN 16
	#define AM6_EEPROM_HDR_VERSION_LEN 2
	#define AM6_EEPROM_HDR_PROC_NR_LEN 4
	#define AM6_EEPROM_HDR_VARIANT_LEN 2
	#define AM6_EEPROM_HDR_PCB_REV_LEN 2
	#define AM6_EEPROM_HDR_SCH_BOM_REV_LEN 2
	#define AM6_EEPROM_HDR_SW_REV_LEN 2
	#define AM6_EEPROM_HDR_VID_LEN 2
	#define AM6_EEPROM_HDR_BLD_WK_LEN 2
	#define AM6_EEPROM_HDR_BLD_YR_LEN 2
	#define AM6_EEPROM_HDR_4P_NR_LEN 6
	#define AM6_EEPROM_HDR_SERIAL_LEN 4

	struct ti_am6_eeprom_record_board_info {
	char name[AM6_EEPROM_HDR_NAME_LEN];
	char version[AM6_EEPROM_HDR_VERSION_LEN];
	char proc_number[AM6_EEPROM_HDR_PROC_NR_LEN];
	char variant[AM6_EEPROM_HDR_VARIANT_LEN];
	char pcb_revision[AM6_EEPROM_HDR_PCB_REV_LEN];
	char schematic_bom_revision[AM6_EEPROM_HDR_SCH_BOM_REV_LEN];
	char software_revision[AM6_EEPROM_HDR_SW_REV_LEN];
	char vendor_id[AM6_EEPROM_HDR_VID_LEN];
	char build_week[AM6_EEPROM_HDR_BLD_WK_LEN];
	char build_year[AM6_EEPROM_HDR_BLD_YR_LEN];
	char board_4p_number[AM6_EEPROM_HDR_4P_NR_LEN];
	char serial[AM6_EEPROM_HDR_SERIAL_LEN];
	} __attribute__ ((__packed__));

	/* Memory location to keep a copy of the AM6 board info record */
	#define TI_AM6_EEPROM_BD_INFO_DATA ((struct ti_am6_eeprom_record_board_info *) \
	TI_SRAM_SCRATCH_BOARD_EEPROM_START)

	/* AM6x TI EVM EEPROM DDR info structure */
	#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_MASK GENMASK(1, 0)
	#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_SHIFT 0
	#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_MASK GENMASK(3, 2)
	#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_NA (0 << 2)
	#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_BOARDID (2 << 2)
	#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_I2C51 (3 << 2)
	#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_MASK GENMASK(5, 4)
	#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR3 (0 << 4)
	#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR4 (1 << 4)
	#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_LPDDR4 (2 << 4)
	#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_MASK GENMASK(7, 6)
	#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_16 (0 << 6)
	#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_32 (1 << 6)
	#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_64 (2 << 6)
	#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_MASK GENMASK(9, 8)
	#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_8 (0 << 8)
	#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_16 (1 << 8)
	#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_32 (2 << 8)
	#define TI_AM6_EEPROM_DDR_CTRL_RANKS_2 BIT(10)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_MASK GENMASK(13, 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_1GB (0 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_2GB (1 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_4GB (2 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_8GB (3 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_12GB (4 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_16GB (5 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_24GB (6 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_DENS_32GB (7 << 11)
	#define TI_AM6_EEPROM_DDR_CTRL_ECC BIT(14)

	struct ti_am6_eeprom_record_ddr_info {
	u16 ddr_control;
	} __attribute__ ((__packed__));

	/* AM6x TI EVM EEPROM DDR SPD structure */
	#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_MASK GENMASK(1, 0)
	#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_SHIFT 0
	#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_MASK GENMASK(4, 3)
	#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR3 (0 << 3)
	#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR4 (1 << 3)
	#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_LPDDR4 (2 << 3)
	#define TI_AM6_EEPROM_DDR_SPD_DATA_LEN 512

	struct ti_am6_eeprom_record_ddr_spd {
	u16 spd_control;
	u8 data[TI_AM6_EEPROM_DDR_SPD_DATA_LEN];
	} __attribute__ ((__packed__));

	/* AM6x TI EVM EEPROM MAC info structure */
	#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_MASK GENMASK(2, 0)
	#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_SHIFT 0
	#define TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK GENMASK(7, 3)
	#define TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT 3
	#define TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT 32

	struct ti_am6_eeprom_record_mac_info {
	u16 mac_control;
	u8 mac_addr[TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT][TI_EEPROM_HDR_ETH_ALEN];
	} __attribute__ ((__packed__));

	struct ti_am6_eeprom_record {
	struct ti_am6_eeprom_record_header header;
	union {
	struct ti_am6_eeprom_record_board_info board_info;
	struct ti_am6_eeprom_record_ddr_info ddr_info;
	struct ti_am6_eeprom_record_ddr_spd ddr_spd;
	struct ti_am6_eeprom_record_mac_info mac_info;
	} data;
	} __attribute__ ((__packed__));

	/* DRA7 EEPROM MAGIC Header identifier */
	#define DRA7_EEPROM_HEADER_MAGIC 0xAA5533EE
	#define DRA7_EEPROM_HDR_NAME_LEN 16
	#define DRA7_EEPROM_HDR_CONFIG_LEN 4

	/**
	* struct dra7_eeprom - This structure holds data read in from the DRA7 EVM
	* EEPROMs.
	* @header: This holds the magic number
	* @name: The name of the board
	* @version_major: Board major version
	* @version_minor: Board minor version
	* @config: Board specific config options
	* @emif1_size: Size of DDR attached to EMIF1
	* @emif2_size: Size of DDR attached to EMIF2
	*
	* The data is this structure is read from the EEPROM on the board.
	* It is used for board detection which is based on name. It is used
	* to configure specific DRA7 boards. This allows booting of multiple
	* DRA7 boards with a single MLO and u-boot.
	*/
	struct dra7_eeprom {
	u32 header;
	char name[DRA7_EEPROM_HDR_NAME_LEN];
	u16 version_major;
	u16 version_minor;
	char config[DRA7_EEPROM_HDR_CONFIG_LEN];
	u32 emif1_size;
	u32 emif2_size;
	} __attribute__ ((__packed__));

	/**
	* struct ti_common_eeprom - Null terminated, usable EEPROM contents.
	* header: Magic number
	* @name: NULL terminated name
	* @version: NULL terminated version
	* @serial: NULL terminated serial number
	* @config: NULL terminated Board specific config options
	* @mac_addr: MAC addresses
	* @emif1_size: Size of the ddr available on emif1
	* @emif2_size: Size of the ddr available on emif2
	*/
	struct ti_common_eeprom {
	u32 header;
	char name[TI_EEPROM_HDR_NAME_LEN + 1];
	char version[TI_EEPROM_HDR_REV_LEN + 1];
	char serial[TI_EEPROM_HDR_SERIAL_LEN + 1];
	char config[TI_EEPROM_HDR_CONFIG_LEN + 1];
	char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
	u64 emif1_size;
	u64 emif2_size;
	};

	#define TI_EEPROM_DATA ((struct ti_common_eeprom *)\
	TI_SRAM_SCRATCH_BOARD_EEPROM_START)

	/*
	* Maximum number of Ethernet MAC addresses extracted from the AM6x on-board
	* EEPROM during the initial probe and carried forward in SRAM.
	*/
	#define AM6_EEPROM_HDR_NO_OF_MAC_ADDR 8

	/**
	* struct ti_am6_eeprom - Null terminated, usable EEPROM contents, as extracted
	* from the AM6 on-board EEPROM. Note that we only carry a subset of data
	* at this time to be considerate about memory consumption.
	* @header: Magic number for data validity indication
	* @name: NULL terminated name
	* @version: NULL terminated version
	* @software_revision: NULL terminated software revision
	* @serial: Board serial number
	* @mac_addr_cnt: Number of MAC addresses stored in this object
	* @mac_addr: MAC addresses
	*/
	struct ti_am6_eeprom {
	u32 header;
	char name[AM6_EEPROM_HDR_NAME_LEN + 1];
	char version[AM6_EEPROM_HDR_VERSION_LEN + 1];
	char software_revision[AM6_EEPROM_HDR_SW_REV_LEN + 1];
	char serial[AM6_EEPROM_HDR_SERIAL_LEN + 1];
	u8 mac_addr_cnt;
	char mac_addr[AM6_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
	};

	#define TI_AM6_EEPROM_DATA ((struct ti_am6_eeprom *) \
	TI_SRAM_SCRATCH_BOARD_EEPROM_START)

	/**
	* ti_i2c_eeprom_am_get() - Consolidated eeprom data collection for AM* TI EVMs
	* @bus_addr: I2C bus address
	* @dev_addr: I2C slave address
	*
	* ep in SRAM is populated by the this AM generic function that consolidates
	* the basic initialization logic common across all AM* platforms.
	*/
	int ti_i2c_eeprom_am_get(int bus_addr, int dev_addr);

	/**
	* ti_emmc_boardid_get() - Fetch board ID information from eMMC
	*
	* ep in SRAM is populated by the this function that is currently
	* based on BeagleBone AI, but could be made more general across AM*
	* platforms.
	*/
	int __maybe_unused ti_emmc_boardid_get(void);

	/**
	* ti_i2c_eeprom_dra7_get() - Consolidated eeprom data for DRA7 TI EVMs
	* @bus_addr: I2C bus address
	* @dev_addr: I2C slave address
	*/
	int ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr);

	/**
	* ti_i2c_eeprom_am6_get() - Consolidated eeprom data for AM6x TI EVMs and
	* associated daughter cards, parsed into user-
	* provided data structures
	* @bus_addr: I2C bus address
	* @dev_addr: I2C slave address
	* @ep: Pointer to structure receiving AM6-specific header data
	* @mac_addr: Pointer to memory receiving parsed MAC addresses. May be
	* NULL to skip MAC parsing.
	* @mac_addr_max_cnt: Maximum number of MAC addresses that can be stored into
	* mac_addr. May be NULL to skip MAC parsing.
	* @mac_addr_cnt: Pointer to a location returning how many MAC addressed got
	* actually parsed.
	*/
	int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
	struct ti_am6_eeprom *ep,
	char **mac_addr,
	u8 mac_addr_max_cnt,
	u8 *mac_addr_cnt);

	/**
	* ti_i2c_eeprom_am6_get_base() - Consolidated eeprom data for AM6x TI EVMs
	* @bus_addr: I2C bus address
	* @dev_addr: I2C slave address
	*/
	int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr);

	/**
	* board_ti_is() - Board detection logic for TI EVMs
	* @name_tag: Tag used in eeprom for the board
	*
	* Return: false if board information does not match OR eeprom wasn't read.
	* true otherwise
	*/
	bool board_ti_is(char *name_tag);

	/**
	* board_ti_k3_is() - Board detection logic for TI K3 EVMs
	* @name_tag: Tag used in eeprom for the board
	*
	* Return: false if board information does not match OR eeprom wasn't read.
	* true otherwise
	*/
	bool board_ti_k3_is(char *name_tag);

	/**
	* board_ti_rev_is() - Compare board revision for TI EVMs
	* @rev_tag: Revision tag to check in eeprom
	* @cmp_len: How many chars to compare?
	*
	* NOTE: revision information is often messed up (hence the str len match) :(
	*
	* Return: false if board information does not match OR eeprom wasn't read.
	* true otherwise
	*/
	bool board_ti_rev_is(char *rev_tag, int cmp_len);

	/**
	* board_ti_get_rev() - Get board revision for TI EVMs
	*
	* Return: Empty string if eeprom wasn't read.
	* Board revision otherwise
	*/
	char *board_ti_get_rev(void);

	/**
	* board_ti_get_config() - Get board config for TI EVMs
	*
	* Return: Empty string if eeprom wasn't read.
	* Board config otherwise
	*/
	char *board_ti_get_config(void);

	/**
	* board_ti_get_name() - Get board name for TI EVMs
	*
	* Return: Empty string if eeprom wasn't read.
	* Board name otherwise
	*/
	char *board_ti_get_name(void);

	/**
	* board_ti_get_eth_mac_addr() - Get Ethernet MAC address from EEPROM MAC list
	* @index: 0 based index within the list of MAC addresses
	* @mac_addr: MAC address contained at the index is returned here
	*
	* Does not sanity check the mac_addr. Whatever is stored in EEPROM is returned.
	*/
	void board_ti_get_eth_mac_addr(int index, u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]);

	/**
	* board_ti_get_emif1_size() - Get size of the DDR on emif1 for TI EVMs
	*
	* Return: NULL if eeprom wasn't read or emif1_size is not available.
	*/
	u64 board_ti_get_emif1_size(void);

	/**
	* board_ti_get_emif2_size() - Get size of the DDR on emif2 for TI EVMs
	*
	* Return: NULL if eeprom wasn't read or emif2_size is not available.
	*/
	u64 board_ti_get_emif2_size(void);

	/**
	* set_board_info_env() - Setup commonly used board information environment vars
	* @name: Name of the board
	*
	* If name is NULL, default_name is used.
	*/
	void set_board_info_env(char *name);

	/**
	* set_board_info_env_am6() - Setup commonly used board information environment
	* vars for AM6-type boards
	* @name: Name of the board
	*
	* If name is NULL, default_name is used.
	*/
	void set_board_info_env_am6(char *name);

	/**
	* board_ti_set_ethaddr- Sets the ethaddr environment from EEPROM
	* @index: The first eth<index>addr environment variable to set
	*
	* EEPROM should be already read before calling this function.
	* The EEPROM contains 2 MAC addresses which define the MAC address
	* range (i.e. first and last MAC address).
	* This function sets the ethaddr environment variable for all
	* the available MAC addresses starting from eth<index>addr.
	*/
	void board_ti_set_ethaddr(int index);

	/**
	* board_ti_am6_set_ethaddr- Sets the ethaddr environment from EEPROM
	* @index: The first eth<index>addr environment variable to set
	* @count: The number of MAC addresses to process
	*
	* EEPROM should be already read before calling this function. The EEPROM
	* contains n dedicated MAC addresses. This function sets the ethaddr
	* environment variable for all the available MAC addresses starting
	* from eth<index>addr.
	*/
	void board_ti_am6_set_ethaddr(int index, int count);

	/**
	* board_ti_was_eeprom_read() - Check to see if the eeprom contents have been read
	*
	* This function is useful to determine if the eeprom has already been read and
	* its contents have already been loaded into memory. It utiltzes the magic
	* number that the header value is set to upon successful eeprom read.
	*/
	bool board_ti_was_eeprom_read(void);

	/**
	* ti_i2c_eeprom_am_set() - Setup the eeprom data with predefined values
	* @name: Name of the board
	* @rev: Revision of the board
	*
	* In some cases such as in RTC-only mode, we are able to skip reading eeprom
	* and wasting i2c based initialization time by using predefined flags for
	* detecting what platform we are booting on. For those platforms, provide
	* a handy function to pre-program information.
	*
	* NOTE: many eeprom information such as serial number, mac address etc is not
	* available.
	*
	* Return: 0 if all went fine, else return error.
	*/
	int ti_i2c_eeprom_am_set(const char name, const char rev);

	#endif /* __BOARD_DETECT_H */