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6c09af9f8b
This patch enables BL2 to run in root world (EL3) which is needed as per the security model of RME-enabled systems. Using the existing BL2_AT_EL3 TF-A build option is not convenient because that option assumes TF-A BL1 doesn't exist, which is not the case for RME-enabled systems. For the purposes of RME, we use a normal BL1 image but we also want to run BL2 in EL3 as normally as possible, therefore rather than use the special bl2_entrypoint function in bl2_el3_entrypoint.S, we use a new bl2_entrypoint function (in bl2_rme_entrypoint.S) which doesn't need reset or mailbox initialization code seen in the el3_entrypoint_common macro. The patch also cleans up bl2_el3_entrypoint.S, moving the bl2_run_next_image function to its own file to avoid duplicating code. Signed-off-by: Zelalem Aweke <zelalem.aweke@arm.com> Change-Id: I99821b4cd550cadcb701f4c0c4dc36da81c7ef55
35 lines
742 B
C
35 lines
742 B
C
/*
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* Copyright (c) 2013-2021, 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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#ifndef BL1_PRIVATE_H
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#define BL1_PRIVATE_H
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#include <stdint.h>
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#include <common/bl_common.h>
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extern entry_point_info_t *bl2_ep_info;
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/******************************************
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* Function prototypes
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*****************************************/
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void bl1_arch_setup(void);
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void bl1_arch_next_el_setup(void);
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void bl1_prepare_next_image(unsigned int image_id);
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void bl1_run_bl2_in_root(void);
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u_register_t bl1_fwu_smc_handler(unsigned int smc_fid,
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u_register_t x1,
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u_register_t x2,
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u_register_t x3,
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u_register_t x4,
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void *cookie,
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void *handle,
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unsigned int flags);
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#endif /* BL1_PRIVATE_H */
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