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da850evm: read mac address from I2C EEPROM on AM18x EVM

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add support to read mac address for AM18x EVM manufactured from
Spectrum digital which have mac address stored in I2C EEPROM manufactured
by WINBOND. This patch reads mac address from I2C EEPROM and sets the
environment variable if not set, If mac address is already present in
environment compare it with the mac address in EEPROM and warn on
mismatch.Introduced a config option CONFIG_MAC_ADDR_IN_EEPROM to where
to look for the mac address.

Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Cc: Tom Rini <trini@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Wolfgang Denk <wd@denx.de>
This commit is contained in:
Hadli, Manjunath 2012-02-09 20:22:25 +00:00 committed by Albert ARIBAUD
parent 38fed6ee95
commit 206a1038f7
2 changed files with 34 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

35
board/davinci/da8xxevm/da850evm.c
View File

@ -132,13 +132,17 @@ int misc_init_r(void)
{
dspwake();
#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
#if defined(CONFIG_MAC_ADDR_IN_SPIFLASH) || defined(CONFIG_MAC_ADDR_IN_EEPROM)
uchar env_enetaddr[6];
int enetaddr_found;
enetaddr_found = eth_getenv_enetaddr("ethaddr", env_enetaddr);
#ifdef CONFIG_MAC_ADDR_IN_SPIFLASH
int spi_mac_read;
uchar buff[6];
enetaddr_found = eth_getenv_enetaddr("ethaddr", env_enetaddr);
spi_mac_read = get_mac_addr(buff);
/*
@ -169,6 +173,33 @@ int misc_init_r(void)
"with the MAC address in the environment\n");
printf("Default using MAC address from environment\n");
}
#endif
uint8_t enetaddr[8];
int eeprom_mac_read;
/* Read Ethernet MAC address from EEPROM */
eeprom_mac_read = dvevm_read_mac_address(enetaddr);
/*
* MAC address not present in the environment
* try and read the MAC address from EEPROM flash
* and set it.
*/
if (!enetaddr_found) {
if (eeprom_mac_read)
/* Set Ethernet MAC address from EEPROM */
davinci_sync_env_enetaddr(enetaddr);
} else {
/*
* MAC address present in environment compare it with
* the MAC address in EEPROM and warn on mismatch
*/
if (eeprom_mac_read && memcmp(enetaddr, env_enetaddr, 6))
printf("Warning: MAC address in EEPROM don't match "
"with the MAC address in the environment\n");
printf("Default using MAC address from environment\n");
}
#endif
return 0;
}

2
boards.cfg
View File

@ -120,7 +120,7 @@ pm9263 arm arm926ejs pm9263 ronetix
pm9g45 arm arm926ejs pm9g45 ronetix at91 pm9g45:AT91SAM9G45
cam_enc_4xx arm arm926ejs cam_enc_4xx ait davinci cam_enc_4xx
da830evm arm arm926ejs da8xxevm davinci davinci
da850_am18xxevm arm arm926ejs da8xxevm davinci davinci da850evm:DA850_AM18X_EVM
da850_am18xxevm arm arm926ejs da8xxevm davinci davinci da850evm:DA850_AM18X_EVM,MAC_ADDR_IN_EEPROM,SYS_I2C_EEPROM_ADDR_LEN=2,SYS_I2C_EEPROM_ADDR=0x50
da850evm arm arm926ejs da8xxevm davinci davinci da850evm:MAC_ADDR_IN_SPIFLASH
davinci_dm355evm arm arm926ejs dm355evm davinci davinci
davinci_dm355leopard arm arm926ejs dm355leopard davinci davinci