Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 1 | /* |
Daniel Boulby | 9460a23 | 2021-12-09 11:20:13 +0000 | [diff] [blame] | 2 | * Copyright (c) 2020-2022, 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> |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 16 | #include <bl31/interrupt_mgmt.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 17 | #include <common/debug.h> |
| 18 | #include <common/runtime_svc.h> |
| 19 | #include <lib/el3_runtime/context_mgmt.h> |
| 20 | #include <lib/smccc.h> |
| 21 | #include <lib/spinlock.h> |
| 22 | #include <lib/utils.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 23 | #include <plat/common/common_def.h> |
| 24 | #include <plat/common/platform.h> |
| 25 | #include <platform_def.h> |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 26 | #include <services/ffa_svc.h> |
Marc Bonnici | 1c33cc3 | 2021-11-29 17:57:03 +0000 | [diff] [blame] | 27 | #include <services/spmc_svc.h> |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 28 | #include <services/spmd_svc.h> |
| 29 | #include <smccc_helpers.h> |
| 30 | #include "spmd_private.h" |
| 31 | |
| 32 | /******************************************************************************* |
| 33 | * SPM Core context information. |
| 34 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 35 | static spmd_spm_core_context_t spm_core_context[PLATFORM_CORE_COUNT]; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 36 | |
| 37 | /******************************************************************************* |
Marc Bonnici | 1c33cc3 | 2021-11-29 17:57:03 +0000 | [diff] [blame] | 38 | * SPM Core attribute information is read from its manifest if the SPMC is not |
| 39 | * at EL3. Else, it is populated from the SPMC directly. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 40 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 41 | static spmc_manifest_attribute_t spmc_attrs; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 42 | |
| 43 | /******************************************************************************* |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 44 | * SPM Core entry point information. Discovered on the primary core and reused |
| 45 | * on secondary cores. |
| 46 | ******************************************************************************/ |
| 47 | static entry_point_info_t *spmc_ep_info; |
| 48 | |
| 49 | /******************************************************************************* |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 50 | * SPM Core context on CPU based on mpidr. |
| 51 | ******************************************************************************/ |
| 52 | spmd_spm_core_context_t *spmd_get_context_by_mpidr(uint64_t mpidr) |
| 53 | { |
Max Shvetsov | f80c64d | 2020-08-25 11:50:18 +0100 | [diff] [blame] | 54 | int core_idx = plat_core_pos_by_mpidr(mpidr); |
| 55 | |
| 56 | if (core_idx < 0) { |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame] | 57 | ERROR("Invalid mpidr: %" PRIx64 ", returned ID: %d\n", mpidr, core_idx); |
Max Shvetsov | f80c64d | 2020-08-25 11:50:18 +0100 | [diff] [blame] | 58 | panic(); |
| 59 | } |
| 60 | |
| 61 | return &spm_core_context[core_idx]; |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 62 | } |
| 63 | |
| 64 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 65 | * SPM Core context on current CPU get helper. |
| 66 | ******************************************************************************/ |
| 67 | spmd_spm_core_context_t *spmd_get_context(void) |
| 68 | { |
Olivier Deprez | 73ef0dc | 2020-06-19 15:33:41 +0200 | [diff] [blame] | 69 | return spmd_get_context_by_mpidr(read_mpidr()); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 70 | } |
| 71 | |
| 72 | /******************************************************************************* |
Olivier Deprez | c7631a5 | 2020-03-23 09:53:06 +0100 | [diff] [blame] | 73 | * SPM Core ID getter. |
| 74 | ******************************************************************************/ |
| 75 | uint16_t spmd_spmc_id_get(void) |
| 76 | { |
| 77 | return spmc_attrs.spmc_id; |
| 78 | } |
| 79 | |
| 80 | /******************************************************************************* |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 81 | * Static function declaration. |
| 82 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 83 | static int32_t spmd_init(void); |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 84 | static int spmd_spmc_init(void *pm_addr); |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 85 | static uint64_t spmd_ffa_error_return(void *handle, |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 86 | int error_code); |
| 87 | static uint64_t spmd_smc_forward(uint32_t smc_fid, |
| 88 | bool secure_origin, |
| 89 | uint64_t x1, |
| 90 | uint64_t x2, |
| 91 | uint64_t x3, |
| 92 | uint64_t x4, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 93 | void *cookie, |
| 94 | void *handle, |
| 95 | uint64_t flags); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 96 | |
Daniel Boulby | 9460a23 | 2021-12-09 11:20:13 +0000 | [diff] [blame] | 97 | /****************************************************************************** |
| 98 | * Builds an SPMD to SPMC direct message request. |
| 99 | *****************************************************************************/ |
| 100 | void spmd_build_spmc_message(gp_regs_t *gpregs, uint8_t target_func, |
| 101 | unsigned long long message) |
| 102 | { |
| 103 | write_ctx_reg(gpregs, CTX_GPREG_X0, FFA_MSG_SEND_DIRECT_REQ_SMC32); |
| 104 | write_ctx_reg(gpregs, CTX_GPREG_X1, |
| 105 | (SPMD_DIRECT_MSG_ENDPOINT_ID << FFA_DIRECT_MSG_SOURCE_SHIFT) | |
| 106 | spmd_spmc_id_get()); |
| 107 | write_ctx_reg(gpregs, CTX_GPREG_X2, BIT(31) | target_func); |
| 108 | write_ctx_reg(gpregs, CTX_GPREG_X3, message); |
| 109 | } |
| 110 | |
| 111 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 112 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 113 | * This function takes an SPMC context pointer and performs a synchronous |
| 114 | * SPMC entry. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 115 | ******************************************************************************/ |
| 116 | uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *spmc_ctx) |
| 117 | { |
| 118 | uint64_t rc; |
| 119 | |
| 120 | assert(spmc_ctx != NULL); |
| 121 | |
| 122 | cm_set_context(&(spmc_ctx->cpu_ctx), SECURE); |
| 123 | |
| 124 | /* Restore the context assigned above */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 125 | #if SPMD_SPM_AT_SEL2 |
Max Shvetsov | bdf502d | 2020-02-25 13:56:19 +0000 | [diff] [blame] | 126 | cm_el2_sysregs_context_restore(SECURE); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 127 | #else |
| 128 | cm_el1_sysregs_context_restore(SECURE); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 129 | #endif |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 130 | cm_set_next_eret_context(SECURE); |
| 131 | |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 132 | /* Enter SPMC */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 133 | rc = spmd_spm_core_enter(&spmc_ctx->c_rt_ctx); |
| 134 | |
| 135 | /* Save secure state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 136 | #if SPMD_SPM_AT_SEL2 |
Max Shvetsov | bdf502d | 2020-02-25 13:56:19 +0000 | [diff] [blame] | 137 | cm_el2_sysregs_context_save(SECURE); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 138 | #else |
| 139 | cm_el1_sysregs_context_save(SECURE); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 140 | #endif |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 141 | |
| 142 | return rc; |
| 143 | } |
| 144 | |
| 145 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 146 | * 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] | 147 | * called originally. |
| 148 | ******************************************************************************/ |
| 149 | __dead2 void spmd_spm_core_sync_exit(uint64_t rc) |
| 150 | { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 151 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 152 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 153 | /* Get current CPU context from SPMC context */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 154 | assert(cm_get_context(SECURE) == &(ctx->cpu_ctx)); |
| 155 | |
| 156 | /* |
| 157 | * The SPMD must have initiated the original request through a |
| 158 | * synchronous entry into SPMC. Jump back to the original C runtime |
| 159 | * context with the value of rc in x0; |
| 160 | */ |
| 161 | spmd_spm_core_exit(ctx->c_rt_ctx, rc); |
| 162 | |
| 163 | panic(); |
| 164 | } |
| 165 | |
| 166 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 167 | * Jump to the SPM Core for the first time. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 168 | ******************************************************************************/ |
| 169 | static int32_t spmd_init(void) |
| 170 | { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 171 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
| 172 | uint64_t rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 173 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 174 | VERBOSE("SPM Core init start.\n"); |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 175 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 176 | /* Primary boot core enters the SPMC for initialization. */ |
| 177 | ctx->state = SPMC_STATE_ON_PENDING; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 178 | |
| 179 | rc = spmd_spm_core_sync_entry(ctx); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 180 | if (rc != 0ULL) { |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame] | 181 | ERROR("SPMC initialisation failed 0x%" PRIx64 "\n", rc); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 182 | return 0; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 183 | } |
| 184 | |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 185 | ctx->state = SPMC_STATE_ON; |
| 186 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 187 | VERBOSE("SPM Core init end.\n"); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 188 | |
| 189 | return 1; |
| 190 | } |
| 191 | |
| 192 | /******************************************************************************* |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 193 | * spmd_secure_interrupt_handler |
| 194 | * Enter the SPMC for further handling of the secure interrupt by the SPMC |
| 195 | * itself or a Secure Partition. |
| 196 | ******************************************************************************/ |
| 197 | static uint64_t spmd_secure_interrupt_handler(uint32_t id, |
| 198 | uint32_t flags, |
| 199 | void *handle, |
| 200 | void *cookie) |
| 201 | { |
| 202 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
| 203 | gp_regs_t *gpregs = get_gpregs_ctx(&ctx->cpu_ctx); |
| 204 | unsigned int linear_id = plat_my_core_pos(); |
| 205 | int64_t rc; |
| 206 | |
| 207 | /* Sanity check the security state when the exception was generated */ |
| 208 | assert(get_interrupt_src_ss(flags) == NON_SECURE); |
| 209 | |
| 210 | /* Sanity check the pointer to this cpu's context */ |
| 211 | assert(handle == cm_get_context(NON_SECURE)); |
| 212 | |
| 213 | /* Save the non-secure context before entering SPMC */ |
| 214 | cm_el1_sysregs_context_save(NON_SECURE); |
| 215 | #if SPMD_SPM_AT_SEL2 |
| 216 | cm_el2_sysregs_context_save(NON_SECURE); |
| 217 | #endif |
| 218 | |
| 219 | /* Convey the event to the SPMC through the FFA_INTERRUPT interface. */ |
| 220 | write_ctx_reg(gpregs, CTX_GPREG_X0, FFA_INTERRUPT); |
| 221 | write_ctx_reg(gpregs, CTX_GPREG_X1, 0); |
| 222 | write_ctx_reg(gpregs, CTX_GPREG_X2, 0); |
| 223 | write_ctx_reg(gpregs, CTX_GPREG_X3, 0); |
| 224 | write_ctx_reg(gpregs, CTX_GPREG_X4, 0); |
| 225 | write_ctx_reg(gpregs, CTX_GPREG_X5, 0); |
| 226 | write_ctx_reg(gpregs, CTX_GPREG_X6, 0); |
| 227 | write_ctx_reg(gpregs, CTX_GPREG_X7, 0); |
| 228 | |
| 229 | /* Mark current core as handling a secure interrupt. */ |
| 230 | ctx->secure_interrupt_ongoing = true; |
| 231 | |
| 232 | rc = spmd_spm_core_sync_entry(ctx); |
| 233 | if (rc != 0ULL) { |
Olivier Deprez | ba100f2 | 2021-11-09 12:37:20 +0100 | [diff] [blame] | 234 | ERROR("%s failed (%" PRId64 ") on CPU%u\n", __func__, rc, linear_id); |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | ctx->secure_interrupt_ongoing = false; |
| 238 | |
| 239 | cm_el1_sysregs_context_restore(NON_SECURE); |
| 240 | #if SPMD_SPM_AT_SEL2 |
| 241 | cm_el2_sysregs_context_restore(NON_SECURE); |
| 242 | #endif |
| 243 | cm_set_next_eret_context(NON_SECURE); |
| 244 | |
| 245 | SMC_RET0(&ctx->cpu_ctx); |
| 246 | } |
| 247 | |
| 248 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 249 | * Loads SPMC manifest and inits SPMC. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 250 | ******************************************************************************/ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 251 | static int spmd_spmc_init(void *pm_addr) |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 252 | { |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 253 | cpu_context_t *cpu_ctx; |
| 254 | unsigned int core_id; |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 255 | uint32_t ep_attr, flags; |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 256 | int rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 257 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 258 | /* Load the SPM Core manifest */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 259 | rc = plat_spm_core_manifest_load(&spmc_attrs, pm_addr); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 260 | if (rc != 0) { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 261 | WARN("No or invalid SPM Core manifest image provided by BL2\n"); |
| 262 | return rc; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 263 | } |
| 264 | |
| 265 | /* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 266 | * Ensure that the SPM Core version is compatible with the SPM |
| 267 | * Dispatcher version. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 268 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 269 | if ((spmc_attrs.major_version != FFA_VERSION_MAJOR) || |
| 270 | (spmc_attrs.minor_version > FFA_VERSION_MINOR)) { |
| 271 | WARN("Unsupported FFA version (%u.%u)\n", |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 272 | spmc_attrs.major_version, spmc_attrs.minor_version); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 273 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 274 | } |
| 275 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 276 | VERBOSE("FFA version (%u.%u)\n", spmc_attrs.major_version, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 277 | spmc_attrs.minor_version); |
| 278 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 279 | VERBOSE("SPM Core run time EL%x.\n", |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 280 | SPMD_SPM_AT_SEL2 ? MODE_EL2 : MODE_EL1); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 281 | |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 282 | /* Validate the SPMC ID, Ensure high bit is set */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 283 | if (((spmc_attrs.spmc_id >> SPMC_SECURE_ID_SHIFT) & |
| 284 | SPMC_SECURE_ID_MASK) == 0U) { |
| 285 | WARN("Invalid ID (0x%x) for SPMC.\n", spmc_attrs.spmc_id); |
| 286 | return -EINVAL; |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 287 | } |
| 288 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 289 | /* Validate the SPM Core execution state */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 290 | if ((spmc_attrs.exec_state != MODE_RW_64) && |
| 291 | (spmc_attrs.exec_state != MODE_RW_32)) { |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 292 | WARN("Unsupported %s%x.\n", "SPM Core execution state 0x", |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 293 | spmc_attrs.exec_state); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 294 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 295 | } |
| 296 | |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 297 | VERBOSE("%s%x.\n", "SPM Core execution state 0x", |
| 298 | spmc_attrs.exec_state); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 299 | |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 300 | #if SPMD_SPM_AT_SEL2 |
| 301 | /* Ensure manifest has not requested AArch32 state in S-EL2 */ |
| 302 | if (spmc_attrs.exec_state == MODE_RW_32) { |
| 303 | WARN("AArch32 state at S-EL2 is not supported.\n"); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 304 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Check if S-EL2 is supported on this system if S-EL2 |
| 309 | * is required for SPM |
| 310 | */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 311 | if (!is_armv8_4_sel2_present()) { |
| 312 | WARN("SPM Core run time S-EL2 is not supported.\n"); |
| 313 | return -EINVAL; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 314 | } |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 315 | #endif /* SPMD_SPM_AT_SEL2 */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 316 | |
| 317 | /* Initialise an entrypoint to set up the CPU context */ |
| 318 | ep_attr = SECURE | EP_ST_ENABLE; |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 319 | if ((read_sctlr_el3() & SCTLR_EE_BIT) != 0ULL) { |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 320 | ep_attr |= EP_EE_BIG; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 321 | } |
| 322 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 323 | SET_PARAM_HEAD(spmc_ep_info, PARAM_EP, VERSION_1, ep_attr); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 324 | |
| 325 | /* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 326 | * Populate SPSR for SPM Core based upon validated parameters from the |
| 327 | * manifest. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 328 | */ |
| 329 | if (spmc_attrs.exec_state == MODE_RW_32) { |
| 330 | spmc_ep_info->spsr = SPSR_MODE32(MODE32_svc, SPSR_T_ARM, |
| 331 | SPSR_E_LITTLE, |
| 332 | DAIF_FIQ_BIT | |
| 333 | DAIF_IRQ_BIT | |
| 334 | DAIF_ABT_BIT); |
| 335 | } else { |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 336 | |
| 337 | #if SPMD_SPM_AT_SEL2 |
| 338 | static const uint32_t runtime_el = MODE_EL2; |
| 339 | #else |
| 340 | static const uint32_t runtime_el = MODE_EL1; |
| 341 | #endif |
| 342 | spmc_ep_info->spsr = SPSR_64(runtime_el, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 343 | MODE_SP_ELX, |
| 344 | DISABLE_ALL_EXCEPTIONS); |
| 345 | } |
| 346 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 347 | /* Set an initial SPMC context state for all cores. */ |
| 348 | for (core_id = 0U; core_id < PLATFORM_CORE_COUNT; core_id++) { |
| 349 | spm_core_context[core_id].state = SPMC_STATE_OFF; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 350 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 351 | /* Setup an initial cpu context for the SPMC. */ |
| 352 | cpu_ctx = &spm_core_context[core_id].cpu_ctx; |
| 353 | cm_setup_context(cpu_ctx, spmc_ep_info); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 354 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 355 | /* |
| 356 | * Pass the core linear ID to the SPMC through x4. |
| 357 | * (TF-A implementation defined behavior helping |
| 358 | * a legacy TOS migration to adopt FF-A). |
| 359 | */ |
| 360 | write_ctx_reg(get_gpregs_ctx(cpu_ctx), CTX_GPREG_X4, core_id); |
| 361 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 362 | |
Olivier Deprez | 9afca12 | 2019-10-28 09:15:52 +0000 | [diff] [blame] | 363 | /* Register power management hooks with PSCI */ |
| 364 | psci_register_spd_pm_hook(&spmd_pm); |
| 365 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 366 | /* Register init function for deferred init. */ |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 367 | bl31_register_bl32_init(&spmd_init); |
| 368 | |
Olivier Deprez | 4ab7a4a | 2021-06-21 09:47:13 +0200 | [diff] [blame] | 369 | INFO("SPM Core setup done.\n"); |
| 370 | |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 371 | /* |
| 372 | * Register an interrupt handler routing secure interrupts to SPMD |
| 373 | * while the NWd is running. |
| 374 | */ |
| 375 | flags = 0; |
| 376 | set_interrupt_rm_flag(flags, NON_SECURE); |
| 377 | rc = register_interrupt_type_handler(INTR_TYPE_S_EL1, |
| 378 | spmd_secure_interrupt_handler, |
| 379 | flags); |
| 380 | if (rc != 0) { |
| 381 | panic(); |
| 382 | } |
| 383 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 384 | return 0; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 385 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 386 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 387 | /******************************************************************************* |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 388 | * Initialize context of SPM Core. |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 389 | ******************************************************************************/ |
| 390 | int spmd_setup(void) |
| 391 | { |
| 392 | int rc; |
Marc Bonnici | 1c33cc3 | 2021-11-29 17:57:03 +0000 | [diff] [blame] | 393 | void *spmc_manifest; |
| 394 | |
| 395 | /* |
| 396 | * If the SPMC is at EL3, then just initialise it directly. The |
| 397 | * shenanigans of when it is at a lower EL are not needed. |
| 398 | */ |
| 399 | if (is_spmc_at_el3()) { |
| 400 | /* Allow the SPMC to populate its attributes directly. */ |
| 401 | spmc_populate_attrs(&spmc_attrs); |
| 402 | |
| 403 | rc = spmc_setup(); |
| 404 | if (rc != 0) { |
| 405 | ERROR("SPMC initialisation failed 0x%x.\n", rc); |
| 406 | } |
| 407 | return rc; |
| 408 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 409 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 410 | spmc_ep_info = bl31_plat_get_next_image_ep_info(SECURE); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 411 | if (spmc_ep_info == NULL) { |
| 412 | WARN("No SPM Core image provided by BL2 boot loader.\n"); |
| 413 | return -EINVAL; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | /* Under no circumstances will this parameter be 0 */ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 417 | assert(spmc_ep_info->pc != 0ULL); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 418 | |
| 419 | /* |
| 420 | * 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] | 421 | * 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] | 422 | */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 423 | spmc_manifest = (void *)spmc_ep_info->args.arg0; |
| 424 | if (spmc_manifest == NULL) { |
| 425 | ERROR("Invalid or absent SPM Core manifest.\n"); |
| 426 | return -EINVAL; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | /* Load manifest, init SPMC */ |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 430 | rc = spmd_spmc_init(spmc_manifest); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 431 | if (rc != 0) { |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 432 | WARN("Booting device without SPM initialization.\n"); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 433 | } |
| 434 | |
Olivier Deprez | 69ca84a | 2020-02-07 15:44:43 +0100 | [diff] [blame] | 435 | return rc; |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 436 | } |
| 437 | |
| 438 | /******************************************************************************* |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 439 | * Forward FF-A SMCs to the other security state. |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 440 | ******************************************************************************/ |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 441 | uint64_t spmd_smc_switch_state(uint32_t smc_fid, |
| 442 | bool secure_origin, |
| 443 | uint64_t x1, |
| 444 | uint64_t x2, |
| 445 | uint64_t x3, |
| 446 | uint64_t x4, |
| 447 | void *handle) |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 448 | { |
Olivier Deprez | ebc3477 | 2020-04-16 16:59:21 +0200 | [diff] [blame] | 449 | unsigned int secure_state_in = (secure_origin) ? SECURE : NON_SECURE; |
| 450 | unsigned int secure_state_out = (!secure_origin) ? SECURE : NON_SECURE; |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 451 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 452 | /* Save incoming security state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 453 | #if SPMD_SPM_AT_SEL2 |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 454 | if (secure_state_in == NON_SECURE) { |
| 455 | cm_el1_sysregs_context_save(secure_state_in); |
| 456 | } |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 457 | cm_el2_sysregs_context_save(secure_state_in); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 458 | #else |
| 459 | cm_el1_sysregs_context_save(secure_state_in); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 460 | #endif |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 461 | |
| 462 | /* Restore outgoing security state */ |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 463 | #if SPMD_SPM_AT_SEL2 |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 464 | if (secure_state_out == NON_SECURE) { |
| 465 | cm_el1_sysregs_context_restore(secure_state_out); |
| 466 | } |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 467 | cm_el2_sysregs_context_restore(secure_state_out); |
Olivier Deprez | 9a2e5be | 2021-05-21 18:00:04 +0200 | [diff] [blame] | 468 | #else |
| 469 | cm_el1_sysregs_context_restore(secure_state_out); |
Max Shvetsov | e7fd80e | 2020-02-25 13:55:00 +0000 | [diff] [blame] | 470 | #endif |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 471 | cm_set_next_eret_context(secure_state_out); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 472 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 473 | 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] | 474 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 475 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 476 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 477 | } |
| 478 | |
| 479 | /******************************************************************************* |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 480 | * Forward SMCs to the other security state. |
| 481 | ******************************************************************************/ |
| 482 | static uint64_t spmd_smc_forward(uint32_t smc_fid, |
| 483 | bool secure_origin, |
| 484 | uint64_t x1, |
| 485 | uint64_t x2, |
| 486 | uint64_t x3, |
| 487 | uint64_t x4, |
| 488 | void *cookie, |
| 489 | void *handle, |
| 490 | uint64_t flags) |
| 491 | { |
| 492 | if (is_spmc_at_el3() && !secure_origin) { |
| 493 | return spmc_smc_handler(smc_fid, secure_origin, x1, x2, x3, x4, |
| 494 | cookie, handle, flags); |
| 495 | } |
| 496 | return spmd_smc_switch_state(smc_fid, secure_origin, x1, x2, x3, x4, |
| 497 | handle); |
| 498 | |
| 499 | } |
| 500 | |
| 501 | /******************************************************************************* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 502 | * Return FFA_ERROR with specified error code |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 503 | ******************************************************************************/ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 504 | static uint64_t spmd_ffa_error_return(void *handle, int error_code) |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 505 | { |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 506 | SMC_RET8(handle, (uint32_t) FFA_ERROR, |
| 507 | FFA_TARGET_INFO_MBZ, (uint32_t)error_code, |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 508 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 509 | FFA_PARAM_MBZ, FFA_PARAM_MBZ); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 510 | } |
| 511 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 512 | /******************************************************************************* |
| 513 | * spmd_check_address_in_binary_image |
| 514 | ******************************************************************************/ |
| 515 | bool spmd_check_address_in_binary_image(uint64_t address) |
| 516 | { |
| 517 | assert(!check_uptr_overflow(spmc_attrs.load_address, spmc_attrs.binary_size)); |
| 518 | |
| 519 | return ((address >= spmc_attrs.load_address) && |
| 520 | (address < (spmc_attrs.load_address + spmc_attrs.binary_size))); |
| 521 | } |
| 522 | |
Olivier Deprez | ebc3477 | 2020-04-16 16:59:21 +0200 | [diff] [blame] | 523 | /****************************************************************************** |
| 524 | * spmd_is_spmc_message |
| 525 | *****************************************************************************/ |
| 526 | static bool spmd_is_spmc_message(unsigned int ep) |
| 527 | { |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 528 | if (is_spmc_at_el3()) { |
| 529 | return false; |
| 530 | } |
| 531 | |
Olivier Deprez | ebc3477 | 2020-04-16 16:59:21 +0200 | [diff] [blame] | 532 | return ((ffa_endpoint_destination(ep) == SPMD_DIRECT_MSG_ENDPOINT_ID) |
| 533 | && (ffa_endpoint_source(ep) == spmc_attrs.spmc_id)); |
| 534 | } |
| 535 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 536 | /****************************************************************************** |
| 537 | * spmd_handle_spmc_message |
| 538 | *****************************************************************************/ |
Olivier Deprez | c7631a5 | 2020-03-23 09:53:06 +0100 | [diff] [blame] | 539 | static int spmd_handle_spmc_message(unsigned long long msg, |
| 540 | unsigned long long parm1, unsigned long long parm2, |
| 541 | unsigned long long parm3, unsigned long long parm4) |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 542 | { |
| 543 | VERBOSE("%s %llx %llx %llx %llx %llx\n", __func__, |
| 544 | msg, parm1, parm2, parm3, parm4); |
| 545 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 546 | return -EINVAL; |
| 547 | } |
| 548 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 549 | /******************************************************************************* |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 550 | * This function forwards FF-A SMCs to either the main SPMD handler or the |
| 551 | * SPMC at EL3, depending on the origin security state, if enabled. |
| 552 | ******************************************************************************/ |
| 553 | uint64_t spmd_ffa_smc_handler(uint32_t smc_fid, |
| 554 | uint64_t x1, |
| 555 | uint64_t x2, |
| 556 | uint64_t x3, |
| 557 | uint64_t x4, |
| 558 | void *cookie, |
| 559 | void *handle, |
| 560 | uint64_t flags) |
| 561 | { |
| 562 | if (is_spmc_at_el3()) { |
| 563 | /* |
| 564 | * If we have an SPMC at EL3 allow handling of the SMC first. |
| 565 | * The SPMC will call back through to SPMD handler if required. |
| 566 | */ |
| 567 | if (is_caller_secure(flags)) { |
| 568 | return spmc_smc_handler(smc_fid, |
| 569 | is_caller_secure(flags), |
| 570 | x1, x2, x3, x4, cookie, |
| 571 | handle, flags); |
| 572 | } |
| 573 | } |
| 574 | return spmd_smc_handler(smc_fid, x1, x2, x3, x4, cookie, |
| 575 | handle, flags); |
| 576 | } |
| 577 | |
| 578 | /******************************************************************************* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 579 | * 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] | 580 | * either forwarded to the other security state or handled by the SPM dispatcher |
| 581 | ******************************************************************************/ |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 582 | uint64_t spmd_smc_handler(uint32_t smc_fid, |
| 583 | uint64_t x1, |
| 584 | uint64_t x2, |
| 585 | uint64_t x3, |
| 586 | uint64_t x4, |
| 587 | void *cookie, |
| 588 | void *handle, |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 589 | uint64_t flags) |
| 590 | { |
Olivier Deprez | eae4596 | 2021-01-19 15:06:47 +0100 | [diff] [blame] | 591 | unsigned int linear_id = plat_my_core_pos(); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 592 | spmd_spm_core_context_t *ctx = spmd_get_context(); |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 593 | bool secure_origin; |
| 594 | int32_t ret; |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 595 | uint32_t input_version; |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 596 | |
| 597 | /* Determine which security state this SMC originated from */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 598 | secure_origin = is_caller_secure(flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 599 | |
Scott Branden | e5dcf98 | 2020-08-25 13:49:32 -0700 | [diff] [blame] | 600 | VERBOSE("SPM(%u): 0x%x 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 |
| 601 | " 0x%" PRIx64 " 0x%" PRIx64 " 0x%" PRIx64 "\n", |
| 602 | linear_id, smc_fid, x1, x2, x3, x4, |
| 603 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 604 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 605 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 606 | |
| 607 | switch (smc_fid) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 608 | case FFA_ERROR: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 609 | /* |
| 610 | * Check if this is the first invocation of this interface on |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 611 | * this CPU. If so, then indicate that the SPM Core initialised |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 612 | * unsuccessfully. |
| 613 | */ |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 614 | if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 615 | spmd_spm_core_sync_exit(x2); |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 616 | } |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 617 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 618 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 619 | x1, x2, x3, x4, cookie, |
| 620 | handle, flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 621 | break; /* not reached */ |
| 622 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 623 | case FFA_VERSION: |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 624 | input_version = (uint32_t)(0xFFFFFFFF & x1); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 625 | /* |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 626 | * If caller is secure and SPMC was initialized, |
| 627 | * return FFA_VERSION of SPMD. |
| 628 | * If caller is non secure and SPMC was initialized, |
| 629 | * return SPMC's version. |
| 630 | * Sanity check to "input_version". |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 631 | * If the EL3 SPMC is enabled, ignore the SPMC state as |
| 632 | * this is not used. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 633 | */ |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 634 | if ((input_version & FFA_VERSION_BIT31_MASK) || |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 635 | (!is_spmc_at_el3() && (ctx->state == SPMC_STATE_RESET))) { |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 636 | ret = FFA_ERROR_NOT_SUPPORTED; |
| 637 | } else if (!secure_origin) { |
Daniel Boulby | 9460a23 | 2021-12-09 11:20:13 +0000 | [diff] [blame] | 638 | gp_regs_t *gpregs = get_gpregs_ctx(&ctx->cpu_ctx); |
| 639 | uint64_t rc; |
| 640 | |
| 641 | if (spmc_attrs.major_version == 1 && |
| 642 | spmc_attrs.minor_version == 0) { |
| 643 | ret = MAKE_FFA_VERSION(spmc_attrs.major_version, |
| 644 | spmc_attrs.minor_version); |
| 645 | SMC_RET8(handle, (uint32_t)ret, |
| 646 | FFA_TARGET_INFO_MBZ, |
| 647 | FFA_TARGET_INFO_MBZ, |
| 648 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 649 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 650 | FFA_PARAM_MBZ); |
| 651 | break; |
| 652 | } |
| 653 | /* Save non-secure system registers context */ |
| 654 | cm_el1_sysregs_context_save(NON_SECURE); |
| 655 | #if SPMD_SPM_AT_SEL2 |
| 656 | cm_el2_sysregs_context_save(NON_SECURE); |
| 657 | #endif |
| 658 | |
| 659 | /* |
| 660 | * The incoming request has FFA_VERSION as X0 smc_fid |
| 661 | * and requested version in x1. Prepare a direct request |
| 662 | * from SPMD to SPMC with FFA_VERSION framework function |
| 663 | * identifier in X2 and requested version in X3. |
| 664 | */ |
| 665 | spmd_build_spmc_message(gpregs, |
| 666 | SPMD_FWK_MSG_FFA_VERSION_REQ, |
| 667 | input_version); |
| 668 | |
| 669 | rc = spmd_spm_core_sync_entry(ctx); |
| 670 | |
| 671 | if ((rc != 0ULL) || |
| 672 | (SMC_GET_GP(gpregs, CTX_GPREG_X0) != |
| 673 | FFA_MSG_SEND_DIRECT_RESP_SMC32) || |
| 674 | (SMC_GET_GP(gpregs, CTX_GPREG_X2) != |
| 675 | (SPMD_FWK_MSG_BIT | |
| 676 | SPMD_FWK_MSG_FFA_VERSION_RESP))) { |
| 677 | ERROR("Failed to forward FFA_VERSION\n"); |
| 678 | ret = FFA_ERROR_NOT_SUPPORTED; |
| 679 | } else { |
| 680 | ret = SMC_GET_GP(gpregs, CTX_GPREG_X3); |
| 681 | } |
| 682 | |
| 683 | /* |
| 684 | * Return here after SPMC has handled FFA_VERSION. |
| 685 | * The returned SPMC version is held in X3. |
| 686 | * Forward this version in X0 to the non-secure caller. |
| 687 | */ |
| 688 | return spmd_smc_forward(ret, true, FFA_PARAM_MBZ, |
| 689 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 690 | FFA_PARAM_MBZ, cookie, gpregs, |
| 691 | flags); |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 692 | } else { |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 693 | ret = MAKE_FFA_VERSION(FFA_VERSION_MAJOR, |
| 694 | FFA_VERSION_MINOR); |
J-Alves | 4c95c70 | 2020-05-26 14:03:05 +0100 | [diff] [blame] | 695 | } |
| 696 | |
J-Alves | 64ff993 | 2021-03-01 10:26:59 +0000 | [diff] [blame] | 697 | SMC_RET8(handle, (uint32_t)ret, FFA_TARGET_INFO_MBZ, |
| 698 | FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 699 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 700 | break; /* not reached */ |
| 701 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 702 | case FFA_FEATURES: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 703 | /* |
| 704 | * This is an optional interface. Do the minimal checks and |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 705 | * forward to SPM Core which will handle it if implemented. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 706 | */ |
| 707 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 708 | /* Forward SMC from Normal world to the SPM Core */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 709 | if (!secure_origin) { |
| 710 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 711 | x1, x2, x3, x4, cookie, |
| 712 | handle, flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 713 | } |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 714 | |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 715 | /* |
| 716 | * Return success if call was from secure world i.e. all |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 717 | * FFA functions are supported. This is essentially a |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 718 | * nop. |
| 719 | */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 720 | SMC_RET8(handle, FFA_SUCCESS_SMC32, x1, x2, x3, x4, |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 721 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 722 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 723 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 724 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 725 | break; /* not reached */ |
| 726 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 727 | case FFA_ID_GET: |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 728 | /* |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 729 | * Returns the ID of the calling FFA component. |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 730 | */ |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 731 | if (!secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 732 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 733 | FFA_TARGET_INFO_MBZ, FFA_NS_ENDPOINT_ID, |
| 734 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 735 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 736 | FFA_PARAM_MBZ); |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 737 | } |
| 738 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 739 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 740 | FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, |
| 741 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 742 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 743 | FFA_PARAM_MBZ); |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 744 | |
Max Shvetsov | e79062e | 2020-03-12 15:16:40 +0000 | [diff] [blame] | 745 | break; /* not reached */ |
| 746 | |
Olivier Deprez | eae4596 | 2021-01-19 15:06:47 +0100 | [diff] [blame] | 747 | case FFA_SECONDARY_EP_REGISTER_SMC64: |
| 748 | if (secure_origin) { |
| 749 | ret = spmd_pm_secondary_ep_register(x1); |
| 750 | |
| 751 | if (ret < 0) { |
| 752 | SMC_RET8(handle, FFA_ERROR_SMC64, |
| 753 | FFA_TARGET_INFO_MBZ, ret, |
| 754 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 755 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 756 | FFA_PARAM_MBZ); |
| 757 | } else { |
| 758 | SMC_RET8(handle, FFA_SUCCESS_SMC64, |
| 759 | FFA_TARGET_INFO_MBZ, FFA_PARAM_MBZ, |
| 760 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 761 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 762 | FFA_PARAM_MBZ); |
| 763 | } |
| 764 | } |
| 765 | |
| 766 | return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 767 | break; /* Not reached */ |
| 768 | |
Daniel Boulby | 27f35df | 2021-02-03 12:13:19 +0000 | [diff] [blame] | 769 | case FFA_SPM_ID_GET: |
| 770 | if (MAKE_FFA_VERSION(1, 1) > FFA_VERSION_COMPILED) { |
| 771 | return spmd_ffa_error_return(handle, |
| 772 | FFA_ERROR_NOT_SUPPORTED); |
| 773 | } |
| 774 | /* |
| 775 | * Returns the ID of the SPMC or SPMD depending on the FF-A |
| 776 | * instance where this function is invoked |
| 777 | */ |
| 778 | if (!secure_origin) { |
| 779 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 780 | FFA_TARGET_INFO_MBZ, spmc_attrs.spmc_id, |
| 781 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 782 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 783 | FFA_PARAM_MBZ); |
| 784 | } |
| 785 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 786 | FFA_TARGET_INFO_MBZ, SPMD_DIRECT_MSG_ENDPOINT_ID, |
| 787 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 788 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 789 | FFA_PARAM_MBZ); |
| 790 | |
| 791 | break; /* not reached */ |
| 792 | |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 793 | case FFA_MSG_SEND_DIRECT_REQ_SMC32: |
| 794 | if (secure_origin && spmd_is_spmc_message(x1)) { |
| 795 | ret = spmd_handle_spmc_message(x3, x4, |
| 796 | SMC_GET_GP(handle, CTX_GPREG_X5), |
| 797 | SMC_GET_GP(handle, CTX_GPREG_X6), |
| 798 | SMC_GET_GP(handle, CTX_GPREG_X7)); |
| 799 | |
| 800 | SMC_RET8(handle, FFA_SUCCESS_SMC32, |
| 801 | FFA_TARGET_INFO_MBZ, ret, |
| 802 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 803 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 804 | FFA_PARAM_MBZ); |
| 805 | } else { |
| 806 | /* Forward direct message to the other world */ |
| 807 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 808 | x1, x2, x3, x4, cookie, |
| 809 | handle, flags); |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 810 | } |
| 811 | break; /* Not reached */ |
| 812 | |
| 813 | case FFA_MSG_SEND_DIRECT_RESP_SMC32: |
| 814 | if (secure_origin && spmd_is_spmc_message(x1)) { |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 815 | spmd_spm_core_sync_exit(0ULL); |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 816 | } else { |
| 817 | /* Forward direct message to the other world */ |
| 818 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 819 | x1, x2, x3, x4, cookie, |
| 820 | handle, flags); |
Olivier Deprez | 33e4412 | 2020-04-16 17:54:27 +0200 | [diff] [blame] | 821 | } |
| 822 | break; /* Not reached */ |
| 823 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 824 | case FFA_RX_RELEASE: |
| 825 | case FFA_RXTX_MAP_SMC32: |
| 826 | case FFA_RXTX_MAP_SMC64: |
| 827 | case FFA_RXTX_UNMAP: |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 828 | case FFA_PARTITION_INFO_GET: |
J-Alves | 2621cfd | 2021-03-11 17:46:47 +0000 | [diff] [blame] | 829 | #if MAKE_FFA_VERSION(1, 1) <= FFA_VERSION_COMPILED |
| 830 | case FFA_NOTIFICATION_BITMAP_CREATE: |
| 831 | case FFA_NOTIFICATION_BITMAP_DESTROY: |
| 832 | case FFA_NOTIFICATION_BIND: |
| 833 | case FFA_NOTIFICATION_UNBIND: |
| 834 | case FFA_NOTIFICATION_SET: |
| 835 | case FFA_NOTIFICATION_GET: |
| 836 | case FFA_NOTIFICATION_INFO_GET: |
| 837 | case FFA_NOTIFICATION_INFO_GET_SMC64: |
Federico Recanati | eecb4b0 | 2022-02-03 17:22:37 +0100 | [diff] [blame] | 838 | case FFA_MSG_SEND2: |
J-Alves | 2621cfd | 2021-03-11 17:46:47 +0000 | [diff] [blame] | 839 | #endif |
Federico Recanati | eecb4b0 | 2022-02-03 17:22:37 +0100 | [diff] [blame] | 840 | case FFA_MSG_RUN: |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 841 | /* |
Federico Recanati | eecb4b0 | 2022-02-03 17:22:37 +0100 | [diff] [blame] | 842 | * Above calls should be invoked only by the Normal world and |
| 843 | * must not be forwarded from Secure world to Normal world. |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 844 | */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 845 | if (secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 846 | return spmd_ffa_error_return(handle, |
Ruari Phipps | 93dff70 | 2020-07-28 10:33:35 +0100 | [diff] [blame] | 847 | FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 848 | } |
| 849 | |
| 850 | /* Fall through to forward the call to the other world */ |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 851 | case FFA_MSG_SEND: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 852 | case FFA_MSG_SEND_DIRECT_REQ_SMC64: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 853 | case FFA_MSG_SEND_DIRECT_RESP_SMC64: |
| 854 | case FFA_MEM_DONATE_SMC32: |
| 855 | case FFA_MEM_DONATE_SMC64: |
| 856 | case FFA_MEM_LEND_SMC32: |
| 857 | case FFA_MEM_LEND_SMC64: |
| 858 | case FFA_MEM_SHARE_SMC32: |
| 859 | case FFA_MEM_SHARE_SMC64: |
| 860 | case FFA_MEM_RETRIEVE_REQ_SMC32: |
| 861 | case FFA_MEM_RETRIEVE_REQ_SMC64: |
| 862 | case FFA_MEM_RETRIEVE_RESP: |
| 863 | case FFA_MEM_RELINQUISH: |
| 864 | case FFA_MEM_RECLAIM: |
| 865 | case FFA_SUCCESS_SMC32: |
| 866 | case FFA_SUCCESS_SMC64: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 867 | /* |
| 868 | * TODO: Assume that no requests originate from EL3 at the |
| 869 | * moment. This will change if a SP service is required in |
| 870 | * response to secure interrupts targeted to EL3. Until then |
| 871 | * simply forward the call to the Normal world. |
| 872 | */ |
| 873 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 874 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 875 | x1, x2, x3, x4, cookie, |
| 876 | handle, flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 877 | break; /* not reached */ |
| 878 | |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 879 | case FFA_MSG_WAIT: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 880 | /* |
| 881 | * Check if this is the first invocation of this interface on |
| 882 | * this CPU from the Secure world. If so, then indicate that the |
Olivier Deprez | 2bae35f | 2020-04-16 13:39:06 +0200 | [diff] [blame] | 883 | * SPM Core initialised successfully. |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 884 | */ |
Olivier Deprez | 7c01633 | 2019-10-28 09:03:13 +0000 | [diff] [blame] | 885 | if (secure_origin && (ctx->state == SPMC_STATE_ON_PENDING)) { |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 886 | spmd_spm_core_sync_exit(0ULL); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 887 | } |
| 888 | |
Max Shvetsov | 745889c | 2020-02-27 14:54:21 +0000 | [diff] [blame] | 889 | /* Fall through to forward the call to the other world */ |
Olivier Deprez | ae18caf | 2021-04-02 11:09:10 +0200 | [diff] [blame] | 890 | case FFA_INTERRUPT: |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 891 | case FFA_MSG_YIELD: |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 892 | /* This interface must be invoked only by the Secure world */ |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 893 | if (!secure_origin) { |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 894 | return spmd_ffa_error_return(handle, |
| 895 | FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 896 | } |
| 897 | |
Olivier Deprez | 41ff36a | 2019-12-23 16:21:12 +0100 | [diff] [blame] | 898 | return spmd_smc_forward(smc_fid, secure_origin, |
Marc Bonnici | da2c9e1 | 2021-11-29 18:02:45 +0000 | [diff] [blame] | 899 | x1, x2, x3, x4, cookie, |
| 900 | handle, flags); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 901 | break; /* not reached */ |
| 902 | |
Olivier Deprez | a664c49 | 2020-08-05 11:27:42 +0200 | [diff] [blame] | 903 | case FFA_NORMAL_WORLD_RESUME: |
| 904 | if (secure_origin && ctx->secure_interrupt_ongoing) { |
| 905 | spmd_spm_core_sync_exit(0ULL); |
| 906 | } else { |
| 907 | return spmd_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 908 | } |
| 909 | break; /* Not reached */ |
| 910 | |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 911 | default: |
| 912 | WARN("SPM: Unsupported call 0x%08x\n", smc_fid); |
J-Alves | 2672cde | 2020-05-07 18:42:25 +0100 | [diff] [blame] | 913 | return spmd_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
Achin Gupta | 86f2353 | 2019-10-11 15:41:16 +0100 | [diff] [blame] | 914 | } |
| 915 | } |