Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 1 | /* |
Olivier Deprez | eae4596 | 2021-01-19 15:06:47 +0100 | [diff] [blame] | 2 | * Copyright (c) 2020-2021, ARM Limited and Contributors. All rights reserved. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | #include <errno.h> |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame^] | 9 | #include <inttypes.h> |
| 10 | #include <stdint.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 11 | #include <string.h> |
| 12 | |
| 13 | #include <arch_helpers.h> |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 14 | #include <arch/aarch64/arch_features.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 15 | #include <bl31/bl31.h> |
| 16 | #include <common/debug.h> |
| 17 | #include <common/runtime_svc.h> |
| 18 | #include <lib/el3_runtime/context_mgmt.h> |
| 19 | #include <lib/smccc.h> |
| 20 | #include <lib/spinlock.h> |
| 21 | #include <lib/utils.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 22 | #include <plat/common/common_def.h> |
| 23 | #include <plat/common/platform.h> |
| 24 | #include <platform_def.h> |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 25 | #include <services/ffa_svc.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 26 | #include <services/spmd_svc.h> |
| 27 | #include <smccc_helpers.h> |
| 28 | #include "spmd_private.h" |
| 29 | |
| 30 | /******************************************************************************* |
| 31 | * SPM Core context information. |
| 32 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 33 | static spmd_spm_core_context_t spm_core_context[PLATFORM_CORE_COUNT]; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 34 | |
| 35 | /******************************************************************************* |
| 36 | * SPM Core attribute information read from its manifest. |
| 37 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 38 | static spmc_manifest_attribute_t spmc_attrs; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 39 | |
| 40 | /******************************************************************************* |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 41 | * SPM Core entry point information. Discovered on the primary core and reused |
| 42 | * on secondary cores. |
| 43 | ******************************************************************************/ |
| 44 | static entry_point_info_t *spmc_ep_info; |
| 45 | |
| 46 | /******************************************************************************* |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 47 | * SPM Core context on CPU based on mpidr. |
| 48 | ******************************************************************************/ |
| 49 | spmd_spm_core_context_t *spmd_get_context_by_mpidr(uint64_t mpidr) |
| 50 | { |
Max Shvetsov | f80c64d | 2020-08-25 11:50:18 +0100 | [diff] [blame] | 51 | int core_idx = plat_core_pos_by_mpidr(mpidr); |
| 52 | |
| 53 | if (core_idx < 0) { |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame^] | 54 | ERROR("Invalid mpidr: %" PRIx64 ", returned ID: %d\n", mpidr, core_idx); |
Max Shvetsov | f80c64d | 2020-08-25 11:50:18 +0100 | [diff] [blame] | 55 | panic(); |
| 56 | } |
| 57 | |
| 58 | return &spm_core_context[core_idx]; |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 59 | } |
| 60 | |
| 61 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 62 | * SPM Core context on current CPU get helper. |
| 63 | ******************************************************************************/ |
| 64 | spmd_spm_core_context_t *spmd_get_context(void) |
| 65 | { |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 66 | return spmd_get_context_by_mpidr(read_mpidr()); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 67 | } |
| 68 | |
| 69 | /******************************************************************************* |
Olivier Deprez | c7631a5 | 2020-03-23 09:53:06 +0100 | [diff] [blame] | 70 | * SPM Core ID getter. |
| 71 | ******************************************************************************/ |
| 72 | uint16_t spmd_spmc_id_get(void) |
| 73 | { |
| 74 | return spmc_attrs.spmc_id; |
| 75 | } |
| 76 | |
| 77 | /******************************************************************************* |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 78 | * Static function declaration. |
| 79 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 80 | static int32_t spmd_init(void); |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 81 | static int spmd_spmc_init(void *pm_addr); |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 82 | static uint64_t spmd_ffa_error_return(void *handle, |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 83 | int error_code); |
| 84 | static uint64_t spmd_smc_forward(uint32_t smc_fid, |
| 85 | bool secure_origin, |
| 86 | uint64_t x1, |
| 87 | uint64_t x2, |
| 88 | uint64_t x3, |
| 89 | uint64_t x4, |
| 90 | void *handle); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 91 | |
| 92 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 93 | * This function takes an SPMC context pointer and performs a synchronous |
| 94 | * SPMC entry. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 95 | ******************************************************************************/ |
| 96 | uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *spmc_ctx) |
| 97 | { |
| 98 | uint64_t rc; |
| 99 | |
| 100 | assert(spmc_ctx != NULL); |
| 101 | |
| 102 | cm_set_context(&(spmc_ctx->cpu_ctx), SECURE); |
| 103 | |
| 104 | /* Restore the context assigned above */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 105 | #if SPMD_SPM_AT_SEL2 |
Max Shvetsov | bdf502d | 2020-02-25 13:56:19 +0000 | [diff] [blame] | 106 | cm_el2_sysregs_context_restore(SECURE); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 107 | #else |
| 108 | cm_el1_sysregs_context_restore(SECURE); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 109 | #endif |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 110 | cm_set_next_eret_context(SECURE); |
| 111 | |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 112 | /* Enter SPMC */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 113 | rc = spmd_spm_core_enter(&spmc_ctx->c_rt_ctx); |
| 114 | |
| 115 | /* Save secure state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 116 | #if SPMD_SPM_AT_SEL2 |
Max Shvetsov | bdf502d | 2020-02-25 13:56:19 +0000 | [diff] [blame] | 117 | cm_el2_sysregs_context_save(SECURE); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 118 | #else |
| 119 | cm_el1_sysregs_context_save(SECURE); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 120 | #endif |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 121 | |
| 122 | return rc; |
| 123 | } |
| 124 | |
| 125 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 126 | * This function returns to the place where spmd_spm_core_sync_entry() was |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 127 | * called originally. |
| 128 | ******************************************************************************/ |
| 129 | __dead2 void spmd_spm_core_sync_exit(uint64_t rc) |
| 130 | { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 131 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 132 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 133 | /* Get current CPU context from SPMC context */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 134 | assert(cm_get_context(SECURE) == &(ctx->cpu_ctx)); |
| 135 | |
| 136 | /* |
| 137 | * The SPMD must have initiated the original request through a |
| 138 | * synchronous entry into SPMC. Jump back to the original C runtime |
| 139 | * context with the value of rc in x0; |
| 140 | */ |
| 141 | spmd_spm_core_exit(ctx->c_rt_ctx, rc); |
| 142 | |
| 143 | panic(); |
| 144 | } |
| 145 | |
| 146 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 147 | * Jump to the SPM Core for the first time. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 148 | ******************************************************************************/ |
| 149 | static int32_t spmd_init(void) |
| 150 | { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 151 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
| 152 | uint64_t rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 153 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 154 | VERBOSE("SPM Core init start.\n"); |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 155 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 156 | /* Primary boot core enters the SPMC for initialization. */ |
| 157 | ctx->state = SPMC_STATE_ON_PENDING; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 158 | |
| 159 | rc = spmd_spm_core_sync_entry(ctx); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 160 | if (rc != 0ULL) { |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame^] | 161 | ERROR("SPMC initialisation failed 0x%" PRIx64 "\n", rc); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 162 | return 0; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 163 | } |
| 164 | |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 165 | ctx->state = SPMC_STATE_ON; |
| 166 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 167 | VERBOSE("SPM Core init end.\n"); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 168 | |
| 169 | return 1; |
| 170 | } |
| 171 | |
| 172 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 173 | * Loads SPMC manifest and inits SPMC. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 174 | ******************************************************************************/ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 175 | static int spmd_spmc_init(void *pm_addr) |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 176 | { |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 177 | cpu_context_t *cpu_ctx; |
| 178 | unsigned int core_id; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 179 | uint32_t ep_attr; |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 180 | int rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 181 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 182 | /* Load the SPM Core manifest */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 183 | rc = plat_spm_core_manifest_load(&spmc_attrs, pm_addr); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 184 | if (rc != 0) { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 185 | WARN("No or invalid SPM Core manifest image provided by BL2\n"); |
| 186 | return rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | /* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 190 | * Ensure that the SPM Core version is compatible with the SPM |
| 191 | * Dispatcher version. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 192 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 193 | if ((spmc_attrs.major_version != FFA_VERSION_MAJOR) || |
| 194 | (spmc_attrs.minor_version > FFA_VERSION_MINOR)) { |
| 195 | WARN("Unsupported FFA version (%u.%u)\n", |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 196 | spmc_attrs.major_version, spmc_attrs.minor_version); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 197 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 198 | } |
| 199 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 200 | VERBOSE("FFA version (%u.%u)\n", spmc_attrs.major_version, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 201 | spmc_attrs.minor_version); |
| 202 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 203 | VERBOSE("SPM Core run time EL%x.\n", |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 204 | SPMD_SPM_AT_SEL2 ? MODE_EL2 : MODE_EL1); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 205 | |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 206 | /* Validate the SPMC ID, Ensure high bit is set */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 207 | if (((spmc_attrs.spmc_id >> SPMC_SECURE_ID_SHIFT) & |
| 208 | SPMC_SECURE_ID_MASK) == 0U) { |
| 209 | WARN("Invalid ID (0x%x) for SPMC.\n", spmc_attrs.spmc_id); |
| 210 | return -EINVAL; |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 211 | } |
| 212 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 213 | /* Validate the SPM Core execution state */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 214 | if ((spmc_attrs.exec_state != MODE_RW_64) && |
| 215 | (spmc_attrs.exec_state != MODE_RW_32)) { |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 216 | WARN("Unsupported %s%x.\n", "SPM Core execution state 0x", |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 217 | spmc_attrs.exec_state); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 218 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 219 | } |
| 220 | |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 221 | VERBOSE("%s%x.\n", "SPM Core execution state 0x", |
| 222 | spmc_attrs.exec_state); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 223 | |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 224 | #if SPMD_SPM_AT_SEL2 |
| 225 | /* Ensure manifest has not requested AArch32 state in S-EL2 */ |
| 226 | if (spmc_attrs.exec_state == MODE_RW_32) { |
| 227 | WARN("AArch32 state at S-EL2 is not supported.\n"); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 228 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 229 | } |
| 230 | |
| 231 | /* |
| 232 | * Check if S-EL2 is supported on this system if S-EL2 |
| 233 | * is required for SPM |
| 234 | */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 235 | if (!is_armv8_4_sel2_present()) { |
| 236 | WARN("SPM Core run time S-EL2 is not supported.\n"); |
| 237 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 238 | } |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 239 | #endif /* SPMD_SPM_AT_SEL2 */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 240 | |
| 241 | /* Initialise an entrypoint to set up the CPU context */ |
| 242 | ep_attr = SECURE | EP_ST_ENABLE; |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 243 | if ((read_sctlr_el3() & SCTLR_EE_BIT) != 0ULL) { |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 244 | ep_attr |= EP_EE_BIG; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 245 | } |
| 246 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 247 | SET_PARAM_HEAD(spmc_ep_info, PARAM_EP, VERSION_1, ep_attr); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 248 | |
| 249 | /* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 250 | * Populate SPSR for SPM Core based upon validated parameters from the |
| 251 | * manifest. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 252 | */ |
| 253 | if (spmc_attrs.exec_state == MODE_RW_32) { |
| 254 | spmc_ep_info->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM, |
| 255 | SPSR_E_LITTLE, |
| 256 | DAIF_FIQ_BIT | |
| 257 | DAIF_IRQ_BIT | |
| 258 | DAIF_ABT_BIT); |
| 259 | } else { |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 260 | |
| 261 | #if SPMD_SPM_AT_SEL2 |
| 262 | static const uint32_t runtime_el = MODE_EL2; |
| 263 | #else |
| 264 | static const uint32_t runtime_el = MODE_EL1; |
| 265 | #endif |
| 266 | spmc_ep_info->spsr = SPSR_64(runtime_el, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 267 | MODE_SP_ELX, |
| 268 | DISABLE_ALL_EXCEPTIONS); |
| 269 | } |
| 270 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 271 | /* Set an initial SPMC context state for all cores. */ |
| 272 | for (core_id = 0U; core_id < PLATFORM_CORE_COUNT; core_id++) { |
| 273 | spm_core_context[core_id].state = SPMC_STATE_OFF; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 274 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 275 | /* Setup an initial cpu context for the SPMC. */ |
| 276 | cpu_ctx = &spm_core_context[core_id].cpu_ctx; |
| 277 | cm_setup_context(cpu_ctx, spmc_ep_info); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 278 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 279 | /* |
| 280 | * Pass the core linear ID to the SPMC through x4. |
| 281 | * (TF-A implementation defined behavior helping |
| 282 | * a legacy TOS migration to adopt FF-A). |
| 283 | */ |
| 284 | write_ctx_reg(get_gpregs_ctx(cpu_ctx), CTX_GPREG_X4, core_id); |
| 285 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 286 | |
Olivier Deprez | 9afca12 | 2019-10-28 09:15:52 +0000 | [diff] [blame] | 287 | /* Register power management hooks with PSCI */ |
| 288 | psci_register_spd_pm_hook(&spmd_pm); |
| 289 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 290 | /* Register init function for deferred init. */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 291 | bl31_register_bl32_init(&spmd_init); |
| 292 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 293 | INFO("SPM Core setup done.\n"); |
| 294 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 295 | return 0; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 296 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 297 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 298 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 299 | * Initialize context of SPM Core. |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 300 | ******************************************************************************/ |
| 301 | int spmd_setup(void) |
| 302 | { |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 303 | void *spmc_manifest; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 304 | int rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 305 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 306 | spmc_ep_info = bl31_plat_get_next_image_ep_info(SECURE); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 307 | if (spmc_ep_info == NULL) { |
| 308 | WARN("No SPM Core image provided by BL2 boot loader.\n"); |
| 309 | return -EINVAL; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | /* Under no circumstances will this parameter be 0 */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 313 | assert(spmc_ep_info->pc != 0ULL); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 314 | |
| 315 | /* |
| 316 | * Check if BL32 ep_info has a reference to 'tos_fw_config'. This will |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 317 | * be used as a manifest for the SPM Core at the next lower EL/mode. |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 318 | */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 319 | spmc_manifest = (void *)spmc_ep_info->args.arg0; |
| 320 | if (spmc_manifest == NULL) { |
| 321 | ERROR("Invalid or absent SPM Core manifest.\n"); |
| 322 | return -EINVAL; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | /* Load manifest, init SPMC */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 326 | rc = spmd_spmc_init(spmc_manifest); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 327 | if (rc != 0) { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 328 | WARN("Booting device without SPM initialization.\n"); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 329 | } |
| 330 | |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 331 | return rc; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /******************************************************************************* |
| 335 | * Forward SMC to the other security state |
| 336 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 337 | static uint64_t spmd_smc_forward(uint32_t smc_fid, |
| 338 | bool secure_origin, |
| 339 | uint64_t x1, |
| 340 | uint64_t x2, |
| 341 | uint64_t x3, |
| 342 | uint64_t x4, |
| 343 | void *handle) |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 344 | { |
Olivier Deprez | ebc3477 | 2020-04-16 16:59:21 +0200 | [diff] [blame] | 345 | unsigned int secure_state_in = (secure_origin) ? SECURE : NON_SECURE; |
| 346 | unsigned int secure_state_out = (!secure_origin) ? SECURE : NON_SECURE; |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 347 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 348 | /* Save incoming security state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 349 | #if SPMD_SPM_AT_SEL2 |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 350 | if (secure_state_in == NON_SECURE) { |
| 351 | cm_el1_sysregs_context_save(secure_state_in); |
| 352 | } |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 353 | cm_el2_sysregs_context_save(secure_state_in); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 354 | #else |
| 355 | cm_el1_sysregs_context_save(secure_state_in); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 356 | #endif |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 357 | |
| 358 | /* Restore outgoing security state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 359 | #if SPMD_SPM_AT_SEL2 |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 360 | if (secure_state_out == NON_SECURE) { |
| 361 | cm_el1_sysregs_context_restore(secure_state_out); |
| 362 | } |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 363 | cm_el2_sysregs_context_restore(secure_state_out); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 364 | #else |
| 365 | cm_el1_sysregs_context_restore(secure_state_out); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 366 | #endif |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 367 | cm_set_next_eret_context(secure_state_out); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 368 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 369 | SMC_RET8(cm_get_context(secure_state_out), smc_fid, x1, x2, x3, x4, |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 370 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 371 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 372 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 373 | } |
| 374 | |
| 375 | /******************************************************************************* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 376 | * Return FFA_ERROR with specified error code |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 377 | ******************************************************************************/ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 378 | static uint64_t spmd_ffa_error_return(void *handle, int error_code) |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 379 | { |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 380 | SMC_RET8(handle, (uint32_t) FFA_ERROR, |
| 381 | FFA_TARGET_INFO_MBZ, (uint32_t)error_code, |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 382 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 383 | FFA_PARAM_MBZ, FFA_PARAM_MBZ); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 384 | } |
| 385 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 386 | /******************************************************************************* |
| 387 | * spmd_check_address_in_binary_image |
| 388 | ******************************************************************************/ |
| 389 | bool spmd_check_address_in_binary_image(uint64_t address) |
| 390 | { |
| 391 | assert(!check_uptr_overflow(spmc_attrs.load_address, spmc_attrs.binary_size)); |
| 392 | |
| 393 | return ((address >= spmc_attrs.load_address) && |
| 394 | (address < (spmc_attrs.load_address + spmc_attrs.binary_size))); |
| 395 | } |
| 396 | |
Olivier Deprez | ebc3477 | 2020-04-16 16:59:21 +0200 | [diff] [blame] | 397 | /****************************************************************************** |
| 398 | * spmd_is_spmc_message |
| 399 | *****************************************************************************/ |
| 400 | static bool spmd_is_spmc_message(unsigned int ep) |
| 401 | { |
| 402 | return ((ffa_endpoint_destination(ep) == SPMD_DIRECT_MSG_ENDPOINT_ID) |
| 403 | && (ffa_endpoint_source(ep) == spmc_attrs.spmc_id)); |
| 404 | } |
| 405 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 406 | /****************************************************************************** |
| 407 | * spmd_handle_spmc_message |
| 408 | *****************************************************************************/ |
Olivier Deprez | c7631a5 | 2020-03-23 09:53:06 +0100 | [diff] [blame] | 409 | static int spmd_handle_spmc_message(unsigned long long msg, |
| 410 | unsigned long long parm1, unsigned long long parm2, |
| 411 | unsigned long long parm3, unsigned long long parm4) |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 412 | { |
| 413 | VERBOSE("%s %llx %llx %llx %llx %llx\n", __func__, |
| 414 | msg, parm1, parm2, parm3, parm4); |
| 415 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 416 | return -EINVAL; |
| 417 | } |
| 418 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 419 | /******************************************************************************* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 420 | * This function handles all SMCs in the range reserved for FFA. Each call is |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 421 | * either forwarded to the other security state or handled by the SPM dispatcher |
| 422 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 423 | uint64_t spmd_smc_handler(uint32_t smc_fid, |
| 424 | uint64_t x1, |
| 425 | uint64_t x2, |
| 426 | uint64_t x3, |
| 427 | uint64_t x4, |
| 428 | void *cookie, |
| 429 | void *handle, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 430 | uint64_t flags) |
| 431 | { |
Olivier Deprez | eae4596 | 2021-01-19 15:06:47 +0100 | [diff] [blame] | 432 | unsigned int linear_id = plat_my_core_pos(); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 433 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 434 | bool secure_origin; |
| 435 | int32_t ret; |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 436 | uint32_t input_version; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 437 | |
| 438 | /* Determine which security state this SMC originated from */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 439 | secure_origin = is_caller_secure(flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 440 | |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame^] | 441 | VERBOSE("SPM(%u): 0x%x 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 |
| 442 | " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 "\n", |
| 443 | linear_id, smc_fid, x1, x2, x3, x4, |
| 444 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 445 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 446 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 447 | |
| 448 | switch (smc_fid) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 449 | case FFA_ERROR: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 450 | /* |
| 451 | * Check if this is the first invocation of this interface on |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 452 | * this CPU. If so, then indicate that the SPM Core initialised |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 453 | * unsuccessfully. |
| 454 | */ |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 455 | if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 456 | spmd_spm_core_sync_exit(x2); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 457 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 458 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 459 | return spmd_smc_forward(smc_fid, secure_origin, |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 460 | x1, x2, x3, x4, handle); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 461 | break; /* not reached */ |
| 462 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 463 | case FFA_VERSION: |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 464 | input_version = (uint32_t)(0xFFFFFFFF & x1); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 465 | /* |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 466 | * If caller is secure and SPMC was initialized, |
| 467 | * return FFA_VERSION of SPMD. |
| 468 | * If caller is non secure and SPMC was initialized, |
| 469 | * return SPMC's version. |
| 470 | * Sanity check to "input_version". |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 471 | */ |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 472 | if ((input_version & FFA_VERSION_BIT31_MASK) || |
| 473 | (ctx->state == SPMC_STATE_RESET)) { |
| 474 | ret = FFA_ERROR_NOT_SUPPORTED; |
| 475 | } else if (!secure_origin) { |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 476 | ret = MAKE_FFA_VERSION(spmc_attrs.major_version, |
| 477 | spmc_attrs.minor_version); |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 478 | } else { |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 479 | ret = MAKE_FFA_VERSION(FFA_VERSION_MAJOR, |
| 480 | FFA_VERSION_MINOR); |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 481 | } |
| 482 | |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 483 | SMC_RET8(handle, (uint32_t)ret, FFA_TARGET_INFO_MBZ, |
| 484 | FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 485 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 486 | break; /* not reached */ |
| 487 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 488 | case FFA_FEATURES: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 489 | /* |
| 490 | * This is an optional interface. Do the minimal checks and |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 491 | * forward to SPM Core which will handle it if implemented. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 492 | */ |
| 493 | |
| 494 | /* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 495 | * Check if x1 holds a valid FFA fid. This is an |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 496 | * optimization. |
| 497 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 498 | if (!is_ffa_fid(x1)) { |
| 499 | return spmd_ffa_error_return(handle, |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 500 | FFA_ERROR_NOT_SUPPORTED); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 501 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 502 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 503 | /* Forward SMC from Normal world to the SPM Core */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 504 | if (!secure_origin) { |
| 505 | return spmd_smc_forward(smc_fid, secure_origin, |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 506 | x1, x2, x3, x4, handle); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 507 | } |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 508 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 509 | /* |
| 510 | * Return success if call was from secure world i.e. all |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 511 | * FFA functions are supported. This is essentially a |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 512 | * nop. |
| 513 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 514 | SMC_RET8(handle, FFA_SUCCESS_SMC32, x1, x2, x3, x4, |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 515 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 516 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 517 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 518 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 519 | break; /* not reached */ |
| 520 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 521 | case FFA_ID_GET: |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 522 | /* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 523 | * Returns the ID of the calling FFA component. |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 524 | */ |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 525 | if (!secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 526 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 527 | FFA_TARGET_INFO_MBZ, FFA_NS_ENDPOINT_ID, |
| 528 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 529 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 530 | FFA_PARAM_MBZ); |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 531 | } |
| 532 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 533 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 534 | FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, |
| 535 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 536 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 537 | FFA_PARAM_MBZ); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 538 | |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 539 | break; /* not reached */ |
| 540 | |
Olivier Deprez | eae4596 | 2021-01-19 15:06:47 +0100 | [diff] [blame] | 541 | case FFA_SECONDARY_EP_REGISTER_SMC64: |
| 542 | if (secure_origin) { |
| 543 | ret = spmd_pm_secondary_ep_register(x1); |
| 544 | |
| 545 | if (ret < 0) { |
| 546 | SMC_RET8(handle, FFA_ERROR_SMC64, |
| 547 | FFA_TARGET_INFO_MBZ, ret, |
| 548 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 549 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 550 | FFA_PARAM_MBZ); |
| 551 | } else { |
| 552 | SMC_RET8(handle, FFA_SUCCESS_SMC64, |
| 553 | FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, |
| 554 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 555 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 556 | FFA_PARAM_MBZ); |
| 557 | } |
| 558 | } |
| 559 | |
| 560 | return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 561 | break; /* Not reached */ |
| 562 | |
Daniel Boulby | 27f35df | 2021-02-03 12:13:19 +0000 | [diff] [blame] | 563 | case FFA_SPM_ID_GET: |
| 564 | if (MAKE_FFA_VERSION(1, 1) > FFA_VERSION_COMPILED) { |
| 565 | return spmd_ffa_error_return(handle, |
| 566 | FFA_ERROR_NOT_SUPPORTED); |
| 567 | } |
| 568 | /* |
| 569 | * Returns the ID of the SPMC or SPMD depending on the FF-A |
| 570 | * instance where this function is invoked |
| 571 | */ |
| 572 | if (!secure_origin) { |
| 573 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 574 | FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, |
| 575 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 576 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 577 | FFA_PARAM_MBZ); |
| 578 | } |
| 579 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 580 | FFA_TARGET_INFO_MBZ, SPMD_DIRECT_MSG_ENDPOINT_ID, |
| 581 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 582 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 583 | FFA_PARAM_MBZ); |
| 584 | |
| 585 | break; /* not reached */ |
| 586 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 587 | case FFA_MSG_SEND_DIRECT_REQ_SMC32: |
| 588 | if (secure_origin && spmd_is_spmc_message(x1)) { |
| 589 | ret = spmd_handle_spmc_message(x3, x4, |
| 590 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 591 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 592 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 593 | |
| 594 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 595 | FFA_TARGET_INFO_MBZ, ret, |
| 596 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 597 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 598 | FFA_PARAM_MBZ); |
| 599 | } else { |
| 600 | /* Forward direct message to the other world */ |
| 601 | return spmd_smc_forward(smc_fid, secure_origin, |
| 602 | x1, x2, x3, x4, handle); |
| 603 | } |
| 604 | break; /* Not reached */ |
| 605 | |
| 606 | case FFA_MSG_SEND_DIRECT_RESP_SMC32: |
| 607 | if (secure_origin && spmd_is_spmc_message(x1)) { |
| 608 | spmd_spm_core_sync_exit(0); |
| 609 | } else { |
| 610 | /* Forward direct message to the other world */ |
| 611 | return spmd_smc_forward(smc_fid, secure_origin, |
| 612 | x1, x2, x3, x4, handle); |
| 613 | } |
| 614 | break; /* Not reached */ |
| 615 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 616 | case FFA_RX_RELEASE: |
| 617 | case FFA_RXTX_MAP_SMC32: |
| 618 | case FFA_RXTX_MAP_SMC64: |
| 619 | case FFA_RXTX_UNMAP: |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 620 | case FFA_PARTITION_INFO_GET: |
J-Alves | 2621cfd | 2021-03-11 17:46:47 +0000 | [diff] [blame] | 621 | #if MAKE_FFA_VERSION(1, 1) <= FFA_VERSION_COMPILED |
| 622 | case FFA_NOTIFICATION_BITMAP_CREATE: |
| 623 | case FFA_NOTIFICATION_BITMAP_DESTROY: |
| 624 | case FFA_NOTIFICATION_BIND: |
| 625 | case FFA_NOTIFICATION_UNBIND: |
| 626 | case FFA_NOTIFICATION_SET: |
| 627 | case FFA_NOTIFICATION_GET: |
| 628 | case FFA_NOTIFICATION_INFO_GET: |
| 629 | case FFA_NOTIFICATION_INFO_GET_SMC64: |
| 630 | #endif |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 631 | /* |
J-Alves | 2621cfd | 2021-03-11 17:46:47 +0000 | [diff] [blame] | 632 | * Above calls should not be forwarded from Secure world to |
| 633 | * Normal world. |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 634 | * |
| 635 | * Fall through to forward the call to the other world |
| 636 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 637 | case FFA_MSG_RUN: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 638 | /* This interface must be invoked only by the Normal world */ |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 639 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 640 | if (secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 641 | return spmd_ffa_error_return(handle, |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 642 | FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 643 | } |
| 644 | |
| 645 | /* Fall through to forward the call to the other world */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 646 | case FFA_MSG_SEND: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 647 | case FFA_MSG_SEND_DIRECT_REQ_SMC64: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 648 | case FFA_MSG_SEND_DIRECT_RESP_SMC64: |
| 649 | case FFA_MEM_DONATE_SMC32: |
| 650 | case FFA_MEM_DONATE_SMC64: |
| 651 | case FFA_MEM_LEND_SMC32: |
| 652 | case FFA_MEM_LEND_SMC64: |
| 653 | case FFA_MEM_SHARE_SMC32: |
| 654 | case FFA_MEM_SHARE_SMC64: |
| 655 | case FFA_MEM_RETRIEVE_REQ_SMC32: |
| 656 | case FFA_MEM_RETRIEVE_REQ_SMC64: |
| 657 | case FFA_MEM_RETRIEVE_RESP: |
| 658 | case FFA_MEM_RELINQUISH: |
| 659 | case FFA_MEM_RECLAIM: |
| 660 | case FFA_SUCCESS_SMC32: |
| 661 | case FFA_SUCCESS_SMC64: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 662 | /* |
| 663 | * TODO: Assume that no requests originate from EL3 at the |
| 664 | * moment. This will change if a SP service is required in |
| 665 | * response to secure interrupts targeted to EL3. Until then |
| 666 | * simply forward the call to the Normal world. |
| 667 | */ |
| 668 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 669 | return spmd_smc_forward(smc_fid, secure_origin, |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 670 | x1, x2, x3, x4, handle); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 671 | break; /* not reached */ |
| 672 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 673 | case FFA_MSG_WAIT: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 674 | /* |
| 675 | * Check if this is the first invocation of this interface on |
| 676 | * this CPU from the Secure world. If so, then indicate that the |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 677 | * SPM Core initialised successfully. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 678 | */ |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 679 | if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 680 | spmd_spm_core_sync_exit(0); |
| 681 | } |
| 682 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 683 | /* Fall through to forward the call to the other world */ |
Olivier Deprez | ae18caf | 2021-04-02 11:09:10 +0200 | [diff] [blame] | 684 | case FFA_INTERRUPT: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 685 | case FFA_MSG_YIELD: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 686 | /* This interface must be invoked only by the Secure world */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 687 | if (!secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 688 | return spmd_ffa_error_return(handle, |
| 689 | FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 690 | } |
| 691 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 692 | return spmd_smc_forward(smc_fid, secure_origin, |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 693 | x1, x2, x3, x4, handle); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 694 | break; /* not reached */ |
| 695 | |
| 696 | default: |
| 697 | WARN("SPM: Unsupported call 0x%08x\n", smc_fid); |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 698 | return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 699 | } |
| 700 | } |