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/mach-exynos/soc.c

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/*
* Copyright (c) 2010 Samsung Electronics.
* Minkyu Kang <mk7.kang@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/system.h>
void reset_cpu(ulong addr)
{
#ifdef CONFIG_CPU_V7
writel(0x1, samsung_get_base_swreset());
#endif
}
#ifndef CONFIG_SYS_DCACHE_OFF
void enable_caches(void)
{
/* Enable D-cache. I-cache is already enabled in start.S */
dcache_enable();
}
#endif
#ifdef CONFIG_ARM64
void lowlevel_init(void)
{
armv8_switch_to_el2();
armv8_switch_to_el1();
}
#endif