43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
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/*
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* Copyright (C) 2013 Google, Inc.
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*
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* This software is licensed under the terms of the GNU General Public
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* License version 2, as published by the Free Software Foundation, and
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* may be copied, distributed, and modified under those terms.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <asm/fiq_glue.h>
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#include <linux/platform_device.h>
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#include <linux/trusty/smcall.h>
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#include <linux/trusty/trusty.h>
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#include "trusty-fiq.h"
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#define _STRINGIFY(x) #x
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#define STRINGIFY(x) _STRINGIFY(x)
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static void __naked trusty_fiq_return(void)
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{
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asm volatile(
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".arch_extension sec\n"
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"mov r12, r0\n"
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"ldr r0, =" STRINGIFY(SMC_FC_FIQ_EXIT) "\n"
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"smc #0");
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}
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int trusty_fiq_arch_probe(struct platform_device *pdev)
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{
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return fiq_glue_set_return_handler(trusty_fiq_return);
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}
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void trusty_fiq_arch_remove(struct platform_device *pdev)
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{
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fiq_glue_clear_return_handler(trusty_fiq_return);
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}
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