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https://github.com/ARM-software/arm-trusted-firmware.git
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664e15c2bd
BL2 for this platform uses mmap_add_dynamic_region(), but BL31 and BL32 (TSP) only use static mapping. So, BL31 and BL32 can make the tables read-only after enabling MMU. Enable ALLOW_RO_XLAT_TABLES by default. Change-Id: Ib59c44697163629119888bb6abd47fa144f09ba3 Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
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* Copyright (c) 2017-2020, 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 <platform_def.h>
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#include <common/debug.h>
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#include <lib/xlat_tables/xlat_tables_v2.h>
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#include <plat/common/platform.h>
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#include "uniphier.h"
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struct uniphier_reg_region {
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uintptr_t base;
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size_t size;
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};
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static const struct uniphier_reg_region uniphier_reg_region[] = {
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[UNIPHIER_SOC_LD11] = {
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.base = 0x50000000UL,
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.size = 0x20000000UL,
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},
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[UNIPHIER_SOC_LD20] = {
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.base = 0x50000000UL,
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.size = 0x20000000UL,
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},
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[UNIPHIER_SOC_PXS3] = {
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.base = 0x50000000UL,
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.size = 0x20000000UL,
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},
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};
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void uniphier_mmap_setup(unsigned int soc)
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{
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VERBOSE("Trusted RAM seen by this BL image: %p - %p\n",
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(void *)BL_CODE_BASE, (void *)BL_END);
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mmap_add_region(BL_CODE_BASE, BL_CODE_BASE,
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round_up(BL_END, PAGE_SIZE) - BL_CODE_BASE,
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MT_MEMORY | MT_RW | MT_SECURE);
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/* remap the code section */
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VERBOSE("Code region: %p - %p\n",
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(void *)BL_CODE_BASE, (void *)BL_CODE_END);
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mmap_add_region(BL_CODE_BASE, BL_CODE_BASE,
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round_up(BL_CODE_END, PAGE_SIZE) - BL_CODE_BASE,
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MT_CODE | MT_SECURE);
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/* remap the coherent memory region */
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VERBOSE("Coherent region: %p - %p\n",
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(void *)BL_COHERENT_RAM_BASE, (void *)BL_COHERENT_RAM_END);
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mmap_add_region(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_BASE,
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BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE,
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MT_DEVICE | MT_RW | MT_SECURE);
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/* register region */
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assert(soc < ARRAY_SIZE(uniphier_reg_region));
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mmap_add_region(uniphier_reg_region[soc].base,
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uniphier_reg_region[soc].base,
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uniphier_reg_region[soc].size,
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MT_DEVICE | MT_RW | MT_SECURE);
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init_xlat_tables();
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enable_mmu(0);
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#if PLAT_RO_XLAT_TABLES
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{
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int ret;
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ret = xlat_make_tables_readonly();
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if (ret) {
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ERROR("Failed to make translation tables read-only.");
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plat_error_handler(ret);
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}
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}
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#endif
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}
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