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https://github.com/ARM-software/arm-trusted-firmware.git
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549bc04f14
This patch separates the code from SPM_MM to get xlat table context and move it to a common location. In addition, only APIs required from both SPM_MM and FF-A EL3 SPMC are moved to the common location. This allows understanding better what is required to support a S-EL0 SP instead of trying to retrofit what already exists. Signed-off-by: Achin Gupta <achin.gupta@arm.com> Signed-off-by: Nishant Sharma <nishant.sharma@arm.com> Change-Id: I142d7fbef5239869176d0de93842c66051d7ed78
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/*
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* Copyright (c) 2017-2023, 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 SPM_COMMON_H
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#define SPM_COMMON_H
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#include <context.h>
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/*******************************************************************************
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* Constants that allow assembler code to preserve callee-saved registers of the
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* C runtime context while performing a security state switch.
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******************************************************************************/
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#define SP_C_RT_CTX_X19 0x0
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#define SP_C_RT_CTX_X20 0x8
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#define SP_C_RT_CTX_X21 0x10
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#define SP_C_RT_CTX_X22 0x18
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#define SP_C_RT_CTX_X23 0x20
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#define SP_C_RT_CTX_X24 0x28
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#define SP_C_RT_CTX_X25 0x30
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#define SP_C_RT_CTX_X26 0x38
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#define SP_C_RT_CTX_X27 0x40
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#define SP_C_RT_CTX_X28 0x48
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#define SP_C_RT_CTX_X29 0x50
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#define SP_C_RT_CTX_X30 0x58
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#define SP_C_RT_CTX_SIZE 0x60
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#define SP_C_RT_CTX_ENTRIES (SP_C_RT_CTX_SIZE >> DWORD_SHIFT)
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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#include <lib/xlat_tables/xlat_tables_v2.h>
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/* Assembly helpers */
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uint64_t spm_secure_partition_enter(uint64_t *c_rt_ctx);
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void __dead2 spm_secure_partition_exit(uint64_t c_rt_ctx, uint64_t ret);
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/* Helper to obtain a reference to the SP's translation table context */
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xlat_ctx_t *spm_get_sp_xlat_context(void);
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#endif /* __ASSEMBLER__ */
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#endif /* SPM_COMMON_H */
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