36 lines
1.0 KiB
C
36 lines
1.0 KiB
C
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/*
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* Copyright (c) 2013-2019, 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 <arch.h>
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#include <arch_helpers.h>
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#include "../bl1_private.h"
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/*******************************************************************************
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* Function that does the first bit of architectural setup that affects
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* execution in the non-secure address space.
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******************************************************************************/
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void bl1_arch_setup(void)
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{
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/* Set the next EL to be AArch64 */
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write_scr_el3(read_scr_el3() | SCR_RW_BIT);
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}
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/*******************************************************************************
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* Set the Secure EL1 required architectural state
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******************************************************************************/
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void bl1_arch_next_el_setup(void)
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{
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u_register_t next_sctlr;
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/* Use the same endianness than the current BL */
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next_sctlr = (read_sctlr_el3() & SCTLR_EE_BIT);
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/* Set SCTLR Secure EL1 */
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next_sctlr |= SCTLR_EL1_RES1;
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write_sctlr_el1(next_sctlr);
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}
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