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https://github.com/ARM-software/arm-trusted-firmware.git
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eb4d4185fa
Enable the MMU and add two entries to map the BL2 code and data regions. Additional mappings will be added dynamically, enhancing flexibility and modularity during the porting process. Change-Id: I107abf944dfdce9dcff47b08272a5001484de8a9 Signed-off-by: Ghennadi Procopciuc <ghennadi.procopciuc@nxp.com>
40 lines
770 B
C
40 lines
770 B
C
/*
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* Copyright 2024 NXP
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include <errno.h>
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#include <common/bl_common.h>
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#include <lib/xlat_tables/xlat_tables_v2.h>
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#include <s32cc-bl-common.h>
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int s32cc_bl_mmu_setup(void)
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{
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const unsigned long code_start = BL_CODE_BASE;
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const unsigned long rw_start = BL_CODE_END;
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unsigned long code_size;
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unsigned long rw_size;
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if (code_start > BL_CODE_END) {
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return -EINVAL;
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}
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if (rw_start > BL_END) {
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return -EINVAL;
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}
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code_size = BL_CODE_END - code_start;
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rw_size = BL_END - rw_start;
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mmap_add_region(code_start, code_start, code_size,
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MT_RO | MT_MEMORY | MT_SECURE);
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mmap_add_region(rw_start, rw_start, rw_size,
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MT_RW | MT_MEMORY | MT_SECURE);
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init_xlat_tables();
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enable_mmu_el3(0);
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return 0;
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}
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