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 /* Determine if the cpu exists of not */
30 if (!is_valid_mpidr(x2))
31 return PSCI_E_INVALID_PARAMS;
32
33 if (((smc_fid >> FUNCID_CC_SHIFT) & FUNCID_CC_MASK) == SMC_32) {
34
35 x1 = (uint32_t)x1;
36 x2 = (uint32_t)x2;
37 x3 = (uint32_t)x3;
38
39 if (smc_fid == PMF_SMC_GET_TIMESTAMP_32) {
40 /*
41 * Return error code and the captured
42 * time-stamp to the caller.
43 * x0 --> error code.
44 * x1 - x2 --> time-stamp value.
45 */
46 rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
47 (unsigned int)x3, &ts_value);
48 SMC_RET3(handle, rc, (uint32_t)ts_value,
49 (uint32_t)(ts_value >> 32));
50 }
51 } else {
52 if (smc_fid == PMF_SMC_GET_TIMESTAMP_64) {
53 /*
54 * Return error code and the captured
55 * time-stamp to the caller.
56 * x0 --> error code.
57 * x1 --> time-stamp value.
58 */
59 rc = pmf_get_timestamp_smc((unsigned int)x1, x2,
60 (unsigned int)x3, &ts_value);
61 SMC_RET2(handle, rc, ts_value);
62 }
63 }
64
65 WARN("Unimplemented PMF Call: 0x%x \n", smc_fid);
66 SMC_RET1(handle, SMC_UNK);
67 }
68
