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DaVinci Ethernet cleanup 

Chips without the EMAC controller won't need the utilities
it uses to read an Ethernet address from EEPROM; so don't
include them needlessly.

Use is_valid_ether() to validate the address from EEPROM.
All-zero addresses aren't the only invalid addresses.
A fully erased EEPROM returns all-ones, also invalid...

Switch those Ethernet utilities to use "%pM" for printing
MAC addresses; and not say ROM when they mean EEPROM.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
David Brownell 2009-04-12 22:49:26 -07:00 committed by Wolfgang Denk
parent c790b04d23
commit 641e0925e4
1 changed files with 15 additions and 19 deletions
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34
board/davinci/common/misc.c
View File

@ -25,6 +25,7 @@
#include <common.h>
#include <i2c.h>
#include <net.h>
#include <asm/arch/hardware.h>
DECLARE_GLOBAL_DATA_PTR;
@ -49,6 +50,8 @@ void dv_display_clk_infos(void)
((REG(PLL2_DIV2) & 0x1f) + 1) / 2);
}
#ifdef CONFIG_DRIVER_TI_EMAC
/* Read ethernet MAC address from EEPROM for DVEVM compatible boards.
* Returns 1 if found, 0 otherwise.
*/
@ -60,8 +63,8 @@ int dvevm_read_mac_address(uint8_t *buf)
(uint8_t *) &buf[0], 6))
goto i2cerr;
/* Check that MAC address is not null. */
if (memcmp(buf, "\0\0\0\0\0\0", 6) == 0)
/* Check that MAC address is valid. */
if (!is_valid_ether_addr(buf))
goto err;
return 1; /* Found */
@ -75,11 +78,11 @@ err:
}
/* If there is a MAC address in the environment, and if it is not identical to
* the MAC address in the ROM, then a warning is printed and the MAC address
* the MAC address in the EEPROM, then a warning is printed and the MAC address
* from the environment is used.
*
* If there is no MAC address in the environment, then it will be initialized
* (silently) from the value in the ROM.
* (silently) from the value in the EEPROM.
*/
void dv_configure_mac_address(uint8_t *rom_enetaddr)
{
@ -96,31 +99,24 @@ void dv_configure_mac_address(uint8_t *rom_enetaddr)
tmp = (*end) ? end+1 : end;
}
/* Check if ROM and U-Boot environment MAC addresses match. */
/* Check if EEPROM and U-Boot environment MAC addresses match. */
if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6) != 0 &&
memcmp(env_enetaddr, rom_enetaddr, 6) != 0) {
printf("Warning: MAC addresses don't match:\n");
printf(" ROM MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n",
rom_enetaddr[0], rom_enetaddr[1],
rom_enetaddr[2], rom_enetaddr[3],
rom_enetaddr[4], rom_enetaddr[5]);
printf(" \"ethaddr\" value: %02X:%02X:%02X:%02X:%02X:%02X\n",
env_enetaddr[0], env_enetaddr[1],
env_enetaddr[2], env_enetaddr[3],
env_enetaddr[4], env_enetaddr[5]) ;
printf(" EEPROM MAC address: %pM\n", rom_enetaddr);
printf(" \"ethaddr\" value: %pM\n", env_enetaddr) ;
debug("### Using MAC address from environment\n");
}
if (!tmp) {
char ethaddr[20];
/* There is no MAC address in the environment, so we initialize
* it from the value in the ROM. */
sprintf(ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X",
rom_enetaddr[0], rom_enetaddr[1],
rom_enetaddr[2], rom_enetaddr[3],
rom_enetaddr[4], rom_enetaddr[5]) ;
debug("### Setting environment from ROM MAC address = \"%s\"\n",
* it from the value in the EEPROM. */
sprintf(ethaddr, "%pM", rom_enetaddr) ;
debug("### Setting environment from EEPROM MAC address = \"%s\"\n",
ethaddr);
setenv("ethaddr", ethaddr);
}
}
#endif /* DAVINCI_EMAC */