u-boot-brain/arch/arm/mach-mvebu/armada8k/cpu.c

/*
 * Copyright (C) 2016 Stefan Roese <sr@denx.de>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#include <common.h>
#include <dm.h>
#include <fdtdec.h>
#include <libfdt.h>
#include <asm/io.h>
#include <asm/system.h>
#include <asm/arch/cpu.h>
#include <asm/arch/soc.h>
#include <asm/armv8/mmu.h>

DECLARE_GLOBAL_DATA_PTR;

/* Armada 7k/8k */
#define MVEBU_RFU_BASE			(MVEBU_REGISTER(0x6f0000))
#define RFU_GLOBAL_SW_RST		(MVEBU_RFU_BASE + 0x84)
#define RFU_SW_RESET_OFFSET		0

static struct mm_region mvebu_mem_map[] = {
	{
		/* RAM */
		.phys = 0x0UL,
		.virt = 0x0UL,
		.size = 0x80000000UL,
		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
			 PTE_BLOCK_INNER_SHARE
	},
	{
		/* SRAM, MMIO regions - AP806 region */
		.phys = 0xf0000000UL,
		.virt = 0xf0000000UL,
		.size = 0x01000000UL,	/* 16MiB internal registers */
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE
	},
	{
		/* SRAM, MMIO regions - CP110 master region */
		.phys = 0xf2000000UL,
		.virt = 0xf2000000UL,
		.size = 0x02000000UL,	/* 32MiB internal registers */
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE
	},
	{
		/* SRAM, MMIO regions - CP110 slave region */
		.phys = 0xf4000000UL,
		.virt = 0xf4000000UL,
		.size = 0x02000000UL,	/* 32MiB internal registers */
		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
			 PTE_BLOCK_NON_SHARE
	},
	{
		/* List terminator */
		0,
	}
};

struct mm_region *mem_map = mvebu_mem_map;

void reset_cpu(ulong ignored)
{
	u32 reg;

	reg = readl(RFU_GLOBAL_SW_RST);
	reg &= ~(1 << RFU_SW_RESET_OFFSET);
	writel(reg, RFU_GLOBAL_SW_RST);
}