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board/BuR/common: add 'brdefaulip_setup' function

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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>
This commit is contained in:
Hannes Schmelzer 2019-04-10 14:13:13 +02:00 • committed by Tom Rini
parent 47656d98bd
commit 2fac7a8294
2 changed files with 36 additions and 0 deletions
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2
board/BuR/common/bur_common.h
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@ -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

34
board/BuR/common/common.c
View file

@ -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;