64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
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/*
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* Copyright (c) 2016-2018, 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 <assert.h>
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#include <common/debug.h>
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#include <lib/pmf/pmf.h>
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#include <plat/common/platform.h>
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#include <smccc_helpers.h>
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/*
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* This function is responsible for handling all PMF SMC calls.
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*/
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uintptr_t pmf_smc_handler(unsigned int smc_fid,
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u_register_t x1,
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u_register_t x2,
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u_register_t x3,
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u_register_t x4,
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void *cookie,
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void *handle,
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u_register_t flags)
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{
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int rc;
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unsigned long long ts_value;
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if (((smc_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_32) {
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x1 = (uint32_t)x1;
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x2 = (uint32_t)x2;
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x3 = (uint32_t)x3;
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if (smc_fid == PMF_SMC_GET_TIMESTAMP_32) {
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/*
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* Return error code and the captured
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* time-stamp to the caller.
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* x0 --> error code.
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* x1 - x2 --> time-stamp value.
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*/
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rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
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(unsigned int)x3, &ts_value);
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SMC_RET3(handle, rc, (uint32_t)ts_value,
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(uint32_t)(ts_value >> 32));
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}
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} else {
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if (smc_fid == PMF_SMC_GET_TIMESTAMP_64) {
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/*
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* Return error code and the captured
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* time-stamp to the caller.
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* x0 --> error code.
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* x1 --> time-stamp value.
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*/
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rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
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(unsigned int)x3, &ts_value);
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SMC_RET2(handle, rc, ts_value);
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}
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}
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WARN("Unimplemented PMF Call: 0x%x \n", smc_fid);
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SMC_RET1(handle, SMC_UNK);
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}
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