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46 lines
1.0 KiB
46 lines
1.0 KiB
/*
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* Copyright (c) 2021, Arm Limited. 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 <asm_macros.S>
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#include <common/bl_common.h>
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.globl bl2_run_next_image
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func bl2_run_next_image
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mov r8,r0
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/*
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* MMU needs to be disabled because both BL2 and BL32 execute
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* in PL1, and therefore share the same address space.
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* BL32 will initialize the address space according to its
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* own requirement.
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*/
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bl disable_mmu_icache_secure
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stcopr r0, TLBIALL
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dsb sy
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isb
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mov r0, r8
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bl bl2_el3_plat_prepare_exit
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/*
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* Extract PC and SPSR based on struct `entry_point_info_t`
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* and load it in LR and SPSR registers respectively.
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*/
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ldr lr, [r8, #ENTRY_POINT_INFO_PC_OFFSET]
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ldr r1, [r8, #(ENTRY_POINT_INFO_PC_OFFSET + 4)]
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msr spsr_xc, r1
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/* Some BL32 stages expect lr_svc to provide the BL33 entry address */
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cps #MODE32_svc
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ldr lr, [r8, #ENTRY_POINT_INFO_LR_SVC_OFFSET]
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cps #MODE32_mon
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add r8, r8, #ENTRY_POINT_INFO_ARGS_OFFSET
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ldm r8, {r0, r1, r2, r3}
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exception_return
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endfunc bl2_run_next_image
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