69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
/*
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* Copyright (c) 2018 Synopsys, Inc. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <device.h>
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#include <kernel.h>
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#include <errno.h>
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#include <zephyr/types.h>
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#include <init.h>
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#include <toolchain.h>
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#include <arch/arc/v2/secureshield/arc_secure.h>
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static void _default_sjli_entry(void);
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/*
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* sjli vector table must be in instruction space
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* \todo: how to let user to install customized sjli entry easily, e.g.
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* through macros or with the help of compiler?
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*/
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const static uint32_t _sjli_vector_table[CONFIG_SJLI_TABLE_SIZE] = {
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[0] = (uint32_t)_arc_do_secure_call,
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[1 ... (CONFIG_SJLI_TABLE_SIZE - 1)] = (uint32_t)_default_sjli_entry,
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};
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/*
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* @brief default entry of sjli call
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*
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*/
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static void _default_sjli_entry(void)
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{
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printk("default sjli entry\n");
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}
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/*
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* @brief initializaiton of sjli related functions
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*
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*/
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static void sjli_table_init(void)
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{
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/* install SJLI table */
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z_arc_v2_aux_reg_write(_ARC_V2_NSC_TABLE_BASE, _sjli_vector_table);
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z_arc_v2_aux_reg_write(_ARC_V2_NSC_TABLE_TOP,
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(_sjli_vector_table + CONFIG_SJLI_TABLE_SIZE));
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}
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/*
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* @brief initializaiton of secureshield related functions.
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*/
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static int arc_secureshield_init(const struct device *arg)
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{
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sjli_table_init();
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/* set nic bit to enable seti/clri and
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* sleep/wevt in normal mode.
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* If not set, direct call of seti/clri etc. will raise exception.
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* Then, these seti/clri instructions should be replaced with secure
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* secure services (sjli call)
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*
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*/
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__asm__ volatile("sflag 0x20");
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return 0;
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}
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SYS_INIT(arc_secureshield_init, PRE_KERNEL_1,
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CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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