Many B&R boards are equipped with an I2C-EEPROM where various information can be stored.
Today there is only a single byte for 'board_id' used.
We write this 'board_id' into environment for later use during boot.
If the value != 0xFF, meaning the byte is programmed, we modify the "brdefaultip" environment variable for setting an IP-Address based on board_id.
Signed-off-by: Hannes Schmelzer hannes.schmelzer@br-automation.com ---
board/BuR/common/bur_common.h | 2 ++ board/BuR/common/common.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+)
diff --git a/board/BuR/common/bur_common.h b/board/BuR/common/bur_common.h index f743194..2591bf4 100644 --- a/board/BuR/common/bur_common.h +++ b/board/BuR/common/bur_common.h @@ -21,4 +21,6 @@ void enable_i2c_pin_mux(void); void enable_board_pin_mux(void); int board_eth_init(bd_t *bis);
+int brdefaultip_setup(int bus, int chip); + #endif diff --git a/board/BuR/common/common.c b/board/BuR/common/common.c index 28ebb84..89087d7 100644 --- a/board/BuR/common/common.c +++ b/board/BuR/common/common.c @@ -266,6 +266,40 @@ int ft_board_setup(void *blob, bd_t *bd) return 0; }
+int brdefaultip_setup(int bus, int chip) +{ + int rc; + struct udevice *i2cdev; + u8 u8buf = 0; + char defip[256] = { 0 }; + + rc = i2c_get_chip_for_busnum(bus, chip, 2, &i2cdev); + if (rc != 0) { + printf("WARN: cannot probe baseboard EEPROM!\n"); + return -1; + } + + rc = dm_i2c_read(i2cdev, 0, &u8buf, 1); + if (rc != 0) { + printf("WARN: cannot read baseboard EEPROM!\n"); + return -1; + } + + if (u8buf != 0xFF) + snprintf(defip, sizeof(defip), + "if test -r ${ipaddr}; then; else setenv ipaddr 192.168.60.%d; setenv serverip 192.168.60.254; setenv gatewayip 192.168.60.254; setenv netmask 255.255.255.0; fi;", + u8buf); + else + strncpy(defip, + "if test -r ${ipaddr}; then; else setenv ipaddr 192.168.60.1; setenv serverip 192.168.60.254; setenv gatewayip 192.168.60.254; setenv netmask 255.255.255.0; fi;", + sizeof(defip)); + + env_set("brdefaultip", defip); + env_set_hex("board_id", u8buf); + + return 0; +} + int overwrite_console(void) { return 1;