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-rmobile/cpu_info-rcar.c

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/*
* arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
*
* Copyright (C) 2013,2014 Renesas Electronics Corporation
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <asm/io.h>
#define PRR 0xFF000044
u32 rmobile_get_cpu_type(void)
{
return (readl(PRR) & 0x00007F00) >> 8;
}
u32 rmobile_get_cpu_rev_integer(void)
{
return ((readl(PRR) & 0x000000F0) >> 4) + 1;
}
u32 rmobile_get_cpu_rev_fraction(void)
{
return readl(PRR) & 0x0000000F;
}