2 * Copyright (c) 2016, Linaro Limited
3 * Copyright (c) 2014, STMicroelectronics International N.V.
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7 * modification, are permitted provided that the following conditions are met:
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13 * this list of conditions and the following disclaimer in the documentation
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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30 #include <kernel/misc.h>
31 #include <platform_config.h>
32 #include <sm/optee_smc.h>
34 #include <sm/std_smc.h>
36 #include "sm_private.h"
38 bool sm_from_nsec(struct sm_ctx *ctx)
40 uint32_t *nsec_r0 = (uint32_t *)(&ctx->nsec.r0);
43 if (OPTEE_SMC_OWNER_NUM(*nsec_r0) == OPTEE_SMC_OWNER_STANDARD) {
44 smc_std_handler((struct thread_smc_args *)nsec_r0);
45 return false; /* Return to non secure state */
49 sm_save_modes_regs(&ctx->nsec.mode_regs);
50 sm_restore_modes_regs(&ctx->sec.mode_regs);
52 memcpy(&ctx->sec.r0, nsec_r0, sizeof(uint32_t) * 8);
53 if (OPTEE_SMC_IS_FAST_CALL(ctx->sec.r0))
54 ctx->sec.mon_lr = (uint32_t)&thread_vector_table.fast_smc_entry;
56 ctx->sec.mon_lr = (uint32_t)&thread_vector_table.std_smc_entry;
57 return true; /* return into secure state */