Manish V Badarkhe | 8a76603 | 2022-02-23 11:26:53 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022 Arm Limited. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | * |
| 6 | * DRTM service |
| 7 | * |
| 8 | * Authors: |
| 9 | * Lucian Paul-Trifu <lucian.paultrifu@gmail.com> |
| 10 | * Brian Nezvadovitz <brinez@microsoft.com> 2021-02-01 |
| 11 | */ |
| 12 | |
| 13 | #include <stdint.h> |
| 14 | |
| 15 | #include <common/debug.h> |
| 16 | #include <common/runtime_svc.h> |
| 17 | #include "drtm_main.h" |
| 18 | #include <services/drtm_svc.h> |
| 19 | |
| 20 | int drtm_setup(void) |
| 21 | { |
| 22 | INFO("DRTM service setup\n"); |
| 23 | |
| 24 | return 0; |
| 25 | } |
| 26 | |
| 27 | uint64_t drtm_smc_handler(uint32_t smc_fid, |
| 28 | uint64_t x1, |
| 29 | uint64_t x2, |
| 30 | uint64_t x3, |
| 31 | uint64_t x4, |
| 32 | void *cookie, |
| 33 | void *handle, |
| 34 | uint64_t flags) |
| 35 | { |
| 36 | /* Check that the SMC call is from the Normal World. */ |
| 37 | if (!is_caller_non_secure(flags)) { |
| 38 | SMC_RET1(handle, NOT_SUPPORTED); |
| 39 | } |
| 40 | |
| 41 | switch (smc_fid) { |
| 42 | case ARM_DRTM_SVC_VERSION: |
| 43 | INFO("DRTM service handler: version\n"); |
| 44 | /* Return the version of current implementation */ |
| 45 | SMC_RET1(handle, ARM_DRTM_VERSION); |
| 46 | break; /* not reached */ |
| 47 | |
| 48 | case ARM_DRTM_SVC_FEATURES: |
| 49 | if (((x1 >> ARM_DRTM_FUNC_SHIFT) & ARM_DRTM_FUNC_MASK) == |
| 50 | ARM_DRTM_FUNC_ID) { |
| 51 | /* Dispatch function-based queries. */ |
| 52 | switch (x1 & FUNCID_MASK) { |
| 53 | case ARM_DRTM_SVC_VERSION: |
| 54 | SMC_RET1(handle, SUCCESS); |
| 55 | break; /* not reached */ |
| 56 | |
| 57 | case ARM_DRTM_SVC_FEATURES: |
| 58 | SMC_RET1(handle, SUCCESS); |
| 59 | break; /* not reached */ |
| 60 | |
| 61 | case ARM_DRTM_SVC_UNPROTECT_MEM: |
| 62 | SMC_RET1(handle, SUCCESS); |
| 63 | break; /* not reached */ |
| 64 | |
| 65 | case ARM_DRTM_SVC_DYNAMIC_LAUNCH: |
| 66 | SMC_RET1(handle, SUCCESS); |
| 67 | break; /* not reached */ |
| 68 | |
| 69 | case ARM_DRTM_SVC_CLOSE_LOCALITY: |
| 70 | WARN("ARM_DRTM_SVC_CLOSE_LOCALITY feature %s", |
| 71 | "is not supported\n"); |
| 72 | SMC_RET1(handle, NOT_SUPPORTED); |
| 73 | break; /* not reached */ |
| 74 | |
| 75 | case ARM_DRTM_SVC_GET_ERROR: |
| 76 | SMC_RET1(handle, SUCCESS); |
| 77 | break; /* not reached */ |
| 78 | |
| 79 | case ARM_DRTM_SVC_SET_ERROR: |
| 80 | SMC_RET1(handle, SUCCESS); |
| 81 | break; /* not reached */ |
| 82 | |
| 83 | case ARM_DRTM_SVC_SET_TCB_HASH: |
| 84 | WARN("ARM_DRTM_SVC_TCB_HASH feature %s", |
| 85 | "is not supported\n"); |
| 86 | SMC_RET1(handle, NOT_SUPPORTED); |
| 87 | break; /* not reached */ |
| 88 | |
| 89 | case ARM_DRTM_SVC_LOCK_TCB_HASH: |
| 90 | WARN("ARM_DRTM_SVC_LOCK_TCB_HASH feature %s", |
| 91 | "is not supported\n"); |
| 92 | SMC_RET1(handle, NOT_SUPPORTED); |
| 93 | break; /* not reached */ |
| 94 | |
| 95 | default: |
| 96 | ERROR("Unknown DRTM service function\n"); |
| 97 | SMC_RET1(handle, NOT_SUPPORTED); |
| 98 | break; /* not reached */ |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | case ARM_DRTM_SVC_UNPROTECT_MEM: |
| 103 | INFO("DRTM service handler: unprotect mem\n"); |
| 104 | SMC_RET1(handle, SMC_OK); |
| 105 | break; /* not reached */ |
| 106 | |
| 107 | case ARM_DRTM_SVC_DYNAMIC_LAUNCH: |
| 108 | INFO("DRTM service handler: dynamic launch\n"); |
| 109 | SMC_RET1(handle, SMC_OK); |
| 110 | break; /* not reached */ |
| 111 | |
| 112 | case ARM_DRTM_SVC_CLOSE_LOCALITY: |
| 113 | WARN("DRTM service handler: close locality %s\n", |
| 114 | "is not supported"); |
| 115 | SMC_RET1(handle, NOT_SUPPORTED); |
| 116 | break; /* not reached */ |
| 117 | |
| 118 | case ARM_DRTM_SVC_GET_ERROR: |
| 119 | INFO("DRTM service handler: get error\n"); |
| 120 | SMC_RET2(handle, SMC_OK, 0); |
| 121 | break; /* not reached */ |
| 122 | |
| 123 | case ARM_DRTM_SVC_SET_ERROR: |
| 124 | INFO("DRTM service handler: set error\n"); |
| 125 | SMC_RET1(handle, SMC_OK); |
| 126 | break; /* not reached */ |
| 127 | |
| 128 | case ARM_DRTM_SVC_SET_TCB_HASH: |
| 129 | WARN("DRTM service handler: set TCB hash %s\n", |
| 130 | "is not supported"); |
| 131 | SMC_RET1(handle, NOT_SUPPORTED); |
| 132 | break; /* not reached */ |
| 133 | |
| 134 | case ARM_DRTM_SVC_LOCK_TCB_HASH: |
| 135 | WARN("DRTM service handler: lock TCB hash %s\n", |
| 136 | "is not supported"); |
| 137 | SMC_RET1(handle, NOT_SUPPORTED); |
| 138 | break; /* not reached */ |
| 139 | |
| 140 | default: |
| 141 | ERROR("Unknown DRTM service function: 0x%x\n", smc_fid); |
| 142 | SMC_RET1(handle, SMC_UNK); |
| 143 | break; /* not reached */ |
| 144 | } |
| 145 | |
| 146 | /* not reached */ |
| 147 | SMC_RET1(handle, SMC_UNK); |
| 148 | } |