mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-15 01:17:39 +00:00
7774e97aa7
Current logic for query of revision, board_name, config returns NULL. Users of these functions do a direct strncmp to compare. Unfortunately, as per conventions require two valid strings to compare against and the current implementation causes a crash when compared with NULL. We'd still like to maintain the simplistic usage of these APIs instead of redundant if (string) res=strncmp(fn(),"cmp",n); flowing all over the place. Hence, since the version, name and config is already pre-initialized with empty string, just dont check for invalid header in the first place and return the empty string to the caller. Reported-by: Brad Griffis <bgriffis@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Tom Rini <trini@konsulko.com> [trini: Correct was'nt -> wasn't typo] Signed-off-by: Tom Rini <trini@konsulko.com>
196 lines
5.8 KiB
C
196 lines
5.8 KiB
C
/*
|
|
* 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 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);
|
|
|
|
#endif /* __BOARD_DETECT_H */
|