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/arch/arm/cpu/arm1176/tnetv107x/init.c

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/*
* TNETV107X: Architecture initialization
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <common.h>
#include <asm/io.h>
void chip_configuration_unlock(void)
{
__raw_writel(TNETV107X_KICK0_MAGIC, TNETV107X_KICK0);
__raw_writel(TNETV107X_KICK1_MAGIC, TNETV107X_KICK1);
}
int arch_cpu_init(void)
{
icache_enable();
chip_configuration_unlock();
return 0;
}