upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/bf537-stamp/bf537-stamp.c

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/*
* U-boot - main board file
*
* Copyright (c) 2005-2008 Analog Devices Inc.
*
* (C) Copyright 2000-2004
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <config.h>
#include <command.h>
#include <asm/blackfin.h>
#include <net.h>
#include <asm/mach-common/bits/bootrom.h>
#include <netdev.h>
DECLARE_GLOBAL_DATA_PTR;
int checkboard(void)
{
printf("Board: ADI BF537 stamp board\n");
printf(" Support: http://blackfin.uclinux.org/\n");
return 0;
}
#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;
if (USE_MAC_IN_FLASH) {
/* we cram the MAC in the last flash sector */
uchar *board_mac_addr = (uchar *)0x203F0000;
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");
eth_random_addr(mac_addr);
}
eth_setenv_enetaddr("ethaddr", mac_addr);
}
int board_eth_init(bd_t *bis)
{
return bfin_EMAC_initialize(bis);
}
#endif
/* miscellaneous platform dependent initialisations */
int misc_init_r(void)
{
#ifdef CONFIG_BFIN_MAC
uchar enetaddr[6];
if (!eth_getenv_enetaddr("ethaddr", enetaddr))
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
#ifdef CONFIG_BFIN_IDE
cf_ide_init();
#endif
return 0;
}