1 /*
2 * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <common/debug.h>
10 #include <lib/pmf/pmf.h>
11 #include <plat/common/platform.h>
12 #include <smccc_helpers.h>
13
14 /*
15 * This function is responsible for handling all PMF SMC calls.
16 */
pmf_smc_handler(unsigned int smc_fid,u_register_t x1,u_register_t x2,u_register_t x3,u_register_t x4,void * cookie,void * handle,u_register_t flags)17 uintptr_t pmf_smc_handler(unsigned int smc_fid,
18 u_register_t x1,
19 u_register_t x2,
20 u_register_t x3,
21 u_register_t x4,
22 void *cookie,
23 void *handle,
24 u_register_t flags)
25 {
26 int rc;
27 unsigned long long ts_value;
28
29 if (((smc_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_32) {
30
31 x1 = (uint32_t)x1;
32 x2 = (uint32_t)x2;
33 x3 = (uint32_t)x3;
34
35 if (smc_fid == PMF_SMC_GET_TIMESTAMP_32) {
36 /*
37 * Return error code and the captured
38 * time-stamp to the caller.
39 * x0 --> error code.
40 * x1 - x2 --> time-stamp value.
41 */
42 rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
43 (unsigned int)x3, &ts_value);
44 SMC_RET3(handle, rc, (uint32_t)ts_value,
45 (uint32_t)(ts_value >> 32));
46 }
47 } else {
48 if (smc_fid == PMF_SMC_GET_TIMESTAMP_64) {
49 /*
50 * Return error code and the captured
51 * time-stamp to the caller.
52 * x0 --> error code.
53 * x1 --> time-stamp value.
54 */
55 rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
56 (unsigned int)x3, &ts_value);
57 SMC_RET2(handle, rc, ts_value);
58 }
59 }
60
61 WARN("Unimplemented PMF Call: 0x%x \n", smc_fid);
62 SMC_RET1(handle, SMC_UNK);
63 }
64