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-bcm283x/phys2bus.c

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/*
* Copyright 2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <config.h>
#include <phys2bus.h>
unsigned long phys_to_bus(unsigned long phys)
{
#ifdef CONFIG_BCM2836
return 0xc0000000 | phys;
#else
return 0x40000000 | phys;
#endif
}
unsigned long bus_to_phys(unsigned long bus)
{
return bus & ~0xc0000000;
}