mirror of
https://github.com/ARM-software/arm-trusted-firmware.git
synced 2025-04-17 01:54:22 +00:00
402b3cf876
NOTE: AARCH32/AARCH64 macros are now deprecated in favor of __aarch64__. All common C compilers pre-define the same macros to signal which architecture the code is being compiled for: __arm__ for AArch32 (or earlier versions) and __aarch64__ for AArch64. There's no need for TF-A to define its own custom macros for this. In order to unify code with the export headers (which use __aarch64__ to avoid another dependency), let's deprecate the AARCH32 and AARCH64 macros and switch the code base over to the pre-defined standard macro. (Since it is somewhat unintuitive that __arm__ only means AArch32, let's standardize on only using __aarch64__.) Change-Id: Ic77de4b052297d77f38fc95f95f65a8ee70cf200 Signed-off-by: Julius Werner <jwerner@chromium.org>
97 lines
2.5 KiB
C
97 lines
2.5 KiB
C
/*
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* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <assert.h>
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#include <string.h>
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#include <platform_def.h>
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#include <arch_helpers.h>
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#include <common/bl_common.h>
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#include <drivers/generic_delay_timer.h>
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#include <plat/arm/common/plat_arm.h>
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#include <plat/common/platform.h>
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/* Weak definitions may be overridden in specific ARM standard platform */
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#pragma weak bl2u_platform_setup
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#pragma weak bl2u_early_platform_setup
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#pragma weak bl2u_plat_arch_setup
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#define MAP_BL2U_TOTAL MAP_REGION_FLAT( \
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BL2U_BASE, \
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BL2U_LIMIT - BL2U_BASE, \
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MT_MEMORY | MT_RW | MT_SECURE)
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/*
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* Perform ARM standard platform setup for BL2U
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*/
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void arm_bl2u_platform_setup(void)
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{
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/* Initialize the secure environment */
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plat_arm_security_setup();
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}
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void bl2u_platform_setup(void)
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{
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arm_bl2u_platform_setup();
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}
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void arm_bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
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{
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/* Initialize the console to provide early debug support */
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arm_console_boot_init();
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generic_delay_timer_init();
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}
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/*******************************************************************************
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* BL1 can pass platform dependent information to BL2U in x1.
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* In case of ARM CSS platforms x1 contains SCP_BL2U image info.
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* In case of ARM FVP platforms x1 is not used.
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* In both cases, x0 contains the extents of the memory available to BL2U
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******************************************************************************/
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void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info)
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{
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arm_bl2u_early_platform_setup(mem_layout, plat_info);
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}
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/*******************************************************************************
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* Perform the very early platform specific architectural setup here. At the
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* moment this is only initializes the mmu in a quick and dirty way.
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* The memory that is used by BL2U is only mapped.
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******************************************************************************/
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void arm_bl2u_plat_arch_setup(void)
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{
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#if USE_COHERENT_MEM
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/* Ensure ARM platforms dont use coherent memory in BL2U */
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assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U);
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#endif
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const mmap_region_t bl_regions[] = {
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MAP_BL2U_TOTAL,
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ARM_MAP_BL_RO,
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#if USE_ROMLIB
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ARM_MAP_ROMLIB_CODE,
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ARM_MAP_ROMLIB_DATA,
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#endif
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{0}
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};
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setup_page_tables(bl_regions, plat_arm_get_mmap());
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#ifdef __aarch64__
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enable_mmu_el1(0);
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#else
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enable_mmu_svc_mon(0);
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#endif
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arm_setup_romlib();
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}
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void bl2u_plat_arch_setup(void)
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{
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arm_bl2u_plat_arch_setup();
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}
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