| /* |
| * Library to support early TI EVM EEPROM handling |
| * |
| * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #ifndef __BOARD_DETECT_H |
| #define __BOARD_DETECT_H |
| |
| /* TI EEPROM MAGIC Header identifier */ |
| #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__)); |
| |
| /* 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 *)\ |
| OMAP_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_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); |
| |
| /** |
| * 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_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 was'nt 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: NULL if eeprom was'nt read. |
| * Board revision otherwise |
| */ |
| char *board_ti_get_rev(void); |
| |
| /** |
| * board_ti_get_config() - Get board config for TI EVMs |
| * |
| * Return: NULL if eeprom was'nt read. |
| * Board config otherwise |
| */ |
| char *board_ti_get_config(void); |
| |
| /** |
| * board_ti_get_name() - Get board name for TI EVMs |
| * |
| * Return: NULL if eeprom was'nt 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 was'nt 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 was'nt 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); |
| |
| #endif /* __BOARD_DETECT_H */ |