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Diffstat (limited to 'board/ti/common/board_detect.h')
| -rw-r--r-- | board/ti/common/board_detect.h | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/board/ti/common/board_detect.h b/board/ti/common/board_detect.h new file mode 100644 index 0000000000..c17ab347c1 --- /dev/null +++ b/board/ti/common/board_detect.h @@ -0,0 +1,140 @@ +/* + * 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__)); + +/** + * 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 + */ +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]; +}; + +#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); + +/** + * 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]); + +/** + * 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 */ |
