40 lines
738 B
ArmAsm
40 lines
738 B
ArmAsm
/*
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* Copyright (c) 2013-2014, 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 <asm_macros.S>
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#include <tsp.h>
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.globl tsp_get_magic
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/*
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* This function raises an SMC to retrieve arguments from secure
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* monitor/dispatcher, saves the returned arguments the array received in x0,
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* and then returns to the caller
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*/
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func tsp_get_magic
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/* Save address to stack */
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stp x0, xzr, [sp, #-16]!
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/* Load arguments */
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ldr w0, _tsp_fid_get_magic
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/* Raise SMC */
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smc #0
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/* Restore address from stack */
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ldp x4, xzr, [sp], #16
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/* Store returned arguments to the array */
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stp x0, x1, [x4, #0]
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ret
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endfunc tsp_get_magic
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.align 2
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_tsp_fid_get_magic:
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.word TSP_GET_ARGS
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