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Blackfin: bf526-ezbrd: get MAC from flash

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The MAC address is stored in the last flash sector rather than OTP.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
This commit is contained in:
Mike Frysinger 2011-03-17 17:32:51 -04:00
parent 03feb8ed2e
commit d1f3ac9ee4
1 changed files with 17 additions and 12 deletions
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29
board/bf526-ezbrd/bf526-ezbrd.c
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@ -27,22 +27,21 @@ int checkboard(void)
#ifdef CONFIG_BFIN_MAC
static void board_init_enetaddr(uchar *mac_addr)
{
#ifdef CONFIG_SYS_NO_FLASH
# define USE_MAC_IN_FLASH 0
#else
# define USE_MAC_IN_FLASH 1
#endif
bool valid_mac = false;
/* the MAC is stored in OTP memory page 0xDF */
uint32_t ret;
uint64_t otp_mac;
ret = bfrom_OtpRead(0xDF, OTP_LOWER_HALF, &otp_mac);
if (!(ret & OTP_MASTER_ERROR)) {
uchar *otp_mac_p = (uchar *)&otp_mac;
for (ret = 0; ret < 6; ++ret)
mac_addr[ret] = otp_mac_p[5 - ret];
if (is_valid_ether_addr(mac_addr))
if (USE_MAC_IN_FLASH) {
/* we cram the MAC in the last flash sector */
uchar *board_mac_addr = (uchar *)0x203F0096;
if (is_valid_ether_addr(board_mac_addr)) {
memcpy(mac_addr, board_mac_addr, 6);
valid_mac = true;
}
}
if (!valid_mac) {
puts("Warning: Generating 'random' MAC address\n");
@ -66,5 +65,11 @@ int misc_init_r(void)
board_init_enetaddr(enetaddr);
#endif
#ifndef CONFIG_SYS_NO_FLASH
/* we use the last sector for the MAC address / POST LDR */
extern flash_info_t flash_info[];
flash_protect(FLAG_PROTECT_SET, 0x203F0000, 0x203FFFFF, &flash_info[0]);
#endif
return 0;
}