plat/qemu/common/qemu_bl1_setup.c

/*
 * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <assert.h>

#include <platform_def.h>

#include <arch.h>
#include <arch_helpers.h>
#include <common/bl_common.h>

#include "qemu_private.h"

#define MAP_BL1_TOTAL		MAP_REGION_FLAT(			\
					bl1_tzram_layout.total_base,	\
					bl1_tzram_layout.total_size,	\
					MT_MEMORY | MT_RW | EL3_PAS)

#define MAP_BL1_RO		MAP_REGION_FLAT(			\
					BL_CODE_BASE,			\
					BL1_CODE_END - BL_CODE_BASE,	\
					MT_CODE | EL3_PAS),		\
				MAP_REGION_FLAT(			\
					BL1_RO_DATA_BASE,		\
					BL1_RO_DATA_END			\
						- BL_RO_DATA_BASE,	\
					MT_RO_DATA | EL3_PAS)

#define MAP_BL_COHERENT_RAM	MAP_REGION_FLAT(			\
					BL_COHERENT_RAM_BASE,		\
					BL_COHERENT_RAM_END		\
						- BL_COHERENT_RAM_BASE,	\
					MT_DEVICE | MT_RW | EL3_PAS)

/* Data structure which holds the extents of the trusted SRAM for BL1*/
static meminfo_t bl1_tzram_layout;


meminfo_t *bl1_plat_sec_mem_layout(void)
{
	return &bl1_tzram_layout;
}

/*******************************************************************************
 * Perform any BL1 specific platform actions.
 ******************************************************************************/
void bl1_early_platform_setup(void)
{
	/* Initialize the console to provide early debug support */
	qemu_console_init();

	/* Allow BL1 to see the whole Trusted RAM */
	bl1_tzram_layout.total_base = BL_RAM_BASE;
	bl1_tzram_layout.total_size = BL_RAM_SIZE;
}

/******************************************************************************
 * Perform the very early platform specific architecture setup.  This only
 * does basic initialization. Later architectural setup (bl1_arch_setup())
 * does not do anything platform specific.
 *****************************************************************************/
#ifdef __aarch64__
#define QEMU_CONFIGURE_BL1_MMU(...)	qemu_configure_mmu_el3(__VA_ARGS__)
#else
#define QEMU_CONFIGURE_BL1_MMU(...)	qemu_configure_mmu_svc_mon(__VA_ARGS__)
#endif

void bl1_plat_arch_setup(void)
{
	const mmap_region_t bl_regions[] = {
		MAP_BL1_TOTAL,
		MAP_BL1_RO,
		MAP_BL_COHERENT_RAM,
		{0}
	};

	setup_page_tables(bl_regions, plat_qemu_get_mmap());
#ifdef __aarch64__
	enable_mmu_el3(0);
#else
	enable_mmu_svc_mon(0);
#endif
}

void bl1_platform_setup(void)
{
	plat_qemu_io_setup();
}