diff options
Diffstat (limited to 'board/ti/common')
| -rw-r--r-- | board/ti/common/board_detect.c | 34 | ||||
| -rw-r--r-- | board/ti/common/board_detect.h | 26 |
2 files changed, 60 insertions, 0 deletions
diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c index 6fdcb6172c..1da5ace923 100644 --- a/board/ti/common/board_detect.c +++ b/board/ti/common/board_detect.c @@ -173,6 +173,30 @@ static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr, return 0; } +int __maybe_unused ti_i2c_eeprom_am_set(const char *name, const char *rev) +{ + struct ti_common_eeprom *ep; + + if (!name || !rev) + return -1; + + ep = TI_EEPROM_DATA; + if (ep->header == TI_EEPROM_HEADER_MAGIC) + goto already_set; + + /* Set to 0 all fields */ + memset(ep, 0, sizeof(*ep)); + strncpy(ep->name, name, TI_EEPROM_HDR_NAME_LEN); + strncpy(ep->version, rev, TI_EEPROM_HDR_REV_LEN); + /* Some dummy serial number to identify the platform */ + strncpy(ep->serial, "0000", TI_EEPROM_HDR_SERIAL_LEN); + /* Mark it with a valid header */ + ep->header = TI_EEPROM_HEADER_MAGIC; + +already_set: + return 0; +} + int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr) { int rc; @@ -433,3 +457,13 @@ void board_ti_set_ethaddr(int index) } } } + +bool __maybe_unused board_ti_was_eeprom_read(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header == TI_EEPROM_HEADER_MAGIC) + return true; + else + return false; +} diff --git a/board/ti/common/board_detect.h b/board/ti/common/board_detect.h index 88b0a59f81..893e1ed998 100644 --- a/board/ti/common/board_detect.h +++ b/board/ti/common/board_detect.h @@ -205,4 +205,30 @@ void set_board_info_env(char *name); */ void board_ti_set_ethaddr(int index); +/** + * 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 */ |