smccc.c (14b841d4a8e6c25d964f5e3bbda379a1541a27ec) smccc.c (0600af1ff16041f15633b2263a8ad9525eecd2f1)
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2018 Andrew Turner
5 *
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
8 * ("CTSRD"), as part of the DARPA CRASH research programme.

--- 33 unchanged lines hidden (view full) ---

42#include <dev/psci/psci.h>
43#include <dev/psci/smccc.h>
44
45#define SMCCC_VERSION_1_0 0x10000
46
47/* Assume 1.0 until we detect a later version */
48static uint32_t smccc_version = SMCCC_VERSION_1_0;
49
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2018 Andrew Turner
5 *
6 * This software was developed by SRI International and the University of
7 * Cambridge Computer Laboratory under DARPA/AFRL contract FA8750-10-C-0237
8 * ("CTSRD"), as part of the DARPA CRASH research programme.

--- 33 unchanged lines hidden (view full) ---

42#include <dev/psci/psci.h>
43#include <dev/psci/smccc.h>
44
45#define SMCCC_VERSION_1_0 0x10000
46
47/* Assume 1.0 until we detect a later version */
48static uint32_t smccc_version = SMCCC_VERSION_1_0;
49
50static void
51smccc_init(void *dummy)
50void
51smccc_init(void)
52{
53 int32_t features;
54 uint32_t ret;
55
56 features = psci_features(SMCCC_VERSION);
57 if (features != PSCI_RETVAL_NOT_SUPPORTED) {
58 ret = psci_call(SMCCC_VERSION, 0, 0, 0);
59 /* This should always be the case as we checked it above */
60 if (ret > 0)
61 smccc_version = ret;
62 }
63
64 if (bootverbose) {
65 printf("Found SMCCC version %u.%u\n",
66 SMCCC_VERSION_MAJOR(smccc_version),
67 SMCCC_VERSION_MINOR(smccc_version));
68 }
69}
52{
53 int32_t features;
54 uint32_t ret;
55
56 features = psci_features(SMCCC_VERSION);
57 if (features != PSCI_RETVAL_NOT_SUPPORTED) {
58 ret = psci_call(SMCCC_VERSION, 0, 0, 0);
59 /* This should always be the case as we checked it above */
60 if (ret > 0)
61 smccc_version = ret;
62 }
63
64 if (bootverbose) {
65 printf("Found SMCCC version %u.%u\n",
66 SMCCC_VERSION_MAJOR(smccc_version),
67 SMCCC_VERSION_MINOR(smccc_version));
68 }
69}
70SYSINIT(smccc_start, SI_SUB_CONFIGURE, SI_ORDER_ANY, smccc_init, NULL);
71
70
71uint32_t
72smccc_get_version(void)
73{
74 return (smccc_version);
75}
76
72int32_t
73smccc_arch_features(uint32_t smccc_func_id)
74{
75
76 if (smccc_version == SMCCC_VERSION_1_0)
77 return (PSCI_RETVAL_NOT_SUPPORTED);
78
79 return (psci_call(SMCCC_ARCH_FEATURES, smccc_func_id, 0, 0));

--- 23 unchanged lines hidden --- 		77int32_t
78smccc_arch_features(uint32_t smccc_func_id)
79{
80
81 if (smccc_version == SMCCC_VERSION_1_0)
82 return (PSCI_RETVAL_NOT_SUPPORTED);
83
84 return (psci_call(SMCCC_ARCH_FEATURES, smccc_func_id, 0, 0));

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