arc_secure.h

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/*
 * Copyright (c) 2018 Synopsys, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
 
#ifndef ZEPHYR_INCLUDE_ARCH_ARC_V2_SJLI_H
#define ZEPHYR_INCLUDE_ARCH_ARC_V2_SJLI_H
 
#define SJLI_CALL_ARC_SECURE    0
 
#define ARC_S_CALL_AUX_READ             0
#define ARC_S_CALL_AUX_WRITE    1
#define ARC_S_CALL_IRQ_ALLOC    2
#define ARC_S_CALL_CLRI                 3
#define ARC_S_CALL_SETI                 4
#define ARC_S_CALL_LIMIT                5
 
 
 
#define ARC_N_IRQ_START_LEVEL ((CONFIG_NUM_IRQ_PRIO_LEVELS + 1) / 2)
 
#ifndef _ASMLANGUAGE
 
#include <zephyr/types.h>
#include <stdbool.h>
 
#include <zephyr/arch/arc/v2/aux_regs.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
#define arc_sjli(id)    \
                (__asm__ volatile("sjli %[sjli_id]\n" :: [sjli_id] "i" (id)))
 
#ifdef CONFIG_ARC_SECURE_FIRMWARE
typedef uint32_t (*_arc_s_call_handler_t)(uint32_t arg1, uint32_t arg2, uint32_t arg3,
                                      uint32_t arg4, uint32_t arg5, uint32_t arg6);
 
 
extern void arc_go_to_normal(uint32_t addr);
extern void _arc_do_secure_call(void);
extern const _arc_s_call_handler_t arc_s_call_table[ARC_S_CALL_LIMIT];
 
#endif
 
 
#ifdef CONFIG_ARC_NORMAL_FIRMWARE
 
static inline uint32_t _arc_s_call_invoke6(uint32_t arg1, uint32_t arg2, uint32_t arg3,
                                          uint32_t arg4, uint32_t arg5, uint32_t arg6,
                                          uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r1 __asm__("r1") = arg2;
        register uint32_t r2 __asm__("r2") = arg3;
        register uint32_t r3 __asm__("r3") = arg4;
        register uint32_t r4 __asm__("r4") = arg5;
        register uint32_t r5 __asm__("r5") = arg6;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r1), "r" (r2), "r" (r3),
                           "r" (r4), "r" (r5), "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke5(uint32_t arg1, uint32_t arg2, uint32_t arg3,
                                          uint32_t arg4, uint32_t arg5, uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r1 __asm__("r1") = arg2;
        register uint32_t r2 __asm__("r2") = arg3;
        register uint32_t r3 __asm__("r3") = arg4;
        register uint32_t r4 __asm__("r4") = arg5;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r1), "r" (r2), "r" (r3),
                           "r" (r4), "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke4(uint32_t arg1, uint32_t arg2, uint32_t arg3,
                                          uint32_t arg4, uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r1 __asm__("r1") = arg2;
        register uint32_t r2 __asm__("r2") = arg3;
        register uint32_t r3 __asm__("r3") = arg4;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r1), "r" (r2), "r" (r3),
                           "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke3(uint32_t arg1, uint32_t arg2, uint32_t arg3,
                                          uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r1 __asm__("r1") = arg2;
        register uint32_t r2 __asm__("r2") = arg3;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r1), "r" (r2), "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke2(uint32_t arg1, uint32_t arg2, uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r1 __asm__("r1") = arg2;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r1), "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke1(uint32_t arg1, uint32_t call_id)
{
        register uint32_t ret __asm__("r0") = arg1;
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r6));
 
        return ret;
}
 
static inline uint32_t _arc_s_call_invoke0(uint32_t call_id)
{
        register uint32_t ret __asm__("r0");
        register uint32_t r6 __asm__("r6") = call_id;
 
        compiler_barrier();
 
        __asm__ volatile(
                         "sjli %[id]\n"
                         : "=r"(ret)
                         : [id] "i" (SJLI_CALL_ARC_SECURE),
                           "r" (ret), "r" (r6));
 
        return ret;
}
 
static inline bool _arch_is_user_context(void)
{
        uint32_t status;
 
        compiler_barrier();
 
        __asm__ volatile("lr %0, [%[status32]]\n"
                         : "=r"(status)
                         : [status32] "i" (_ARC_V2_STATUS32));
 
        return !(status & _ARC_V2_STATUS32_US) ? true : false;
}
 
 
 
 
#endif /* CONFIG_ARC_NORMAL_FIRMWARE */
 
#ifdef __cplusplus
}
#endif
 
#endif /* _ASMLANGUAGE */
 
#endif /* ZEPHYR_INCLUDE_ARCH_ARC_V2_SECURE_H */