Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2022, ARM Limited and Contributors. All rights reserved. |
| 3 | * |
| 4 | * SPDX-License-Identifier: BSD-3-Clause |
| 5 | */ |
| 6 | |
| 7 | #include <assert.h> |
| 8 | #include <errno.h> |
| 9 | |
| 10 | #include <arch_helpers.h> |
| 11 | #include <bl31/bl31.h> |
| 12 | #include <bl31/ehf.h> |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 13 | #include <bl31/interrupt_mgmt.h> |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 14 | #include <common/debug.h> |
| 15 | #include <common/fdt_wrappers.h> |
| 16 | #include <common/runtime_svc.h> |
Marc Bonnici | 37dd8e1 | 2021-08-17 18:00:07 +0100 | [diff] [blame] | 17 | #include <common/uuid.h> |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 18 | #include <lib/el3_runtime/context_mgmt.h> |
| 19 | #include <lib/smccc.h> |
| 20 | #include <lib/utils.h> |
| 21 | #include <lib/xlat_tables/xlat_tables_v2.h> |
| 22 | #include <libfdt.h> |
| 23 | #include <plat/common/platform.h> |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 24 | #include <services/el3_spmc_logical_sp.h> |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 25 | #include <services/ffa_svc.h> |
| 26 | #include <services/spmc_svc.h> |
| 27 | #include <services/spmd_svc.h> |
| 28 | #include "spmc.h" |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 29 | #include "spmc_shared_mem.h" |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 30 | |
| 31 | #include <platform_def.h> |
| 32 | |
Marc Bonnici | 37dd8e1 | 2021-08-17 18:00:07 +0100 | [diff] [blame] | 33 | /* Declare the maximum number of SPs and El3 LPs. */ |
| 34 | #define MAX_SP_LP_PARTITIONS SECURE_PARTITION_COUNT + MAX_EL3_LP_DESCS_COUNT |
| 35 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 36 | /* |
| 37 | * Allocate a secure partition descriptor to describe each SP in the system that |
| 38 | * does not reside at EL3. |
| 39 | */ |
| 40 | static struct secure_partition_desc sp_desc[SECURE_PARTITION_COUNT]; |
| 41 | |
| 42 | /* |
| 43 | * Allocate an NS endpoint descriptor to describe each VM and the Hypervisor in |
| 44 | * the system that interacts with a SP. It is used to track the Hypervisor |
| 45 | * buffer pair, version and ID for now. It could be extended to track VM |
| 46 | * properties when the SPMC supports indirect messaging. |
| 47 | */ |
| 48 | static struct ns_endpoint_desc ns_ep_desc[NS_PARTITION_COUNT]; |
| 49 | |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 50 | static uint64_t spmc_sp_interrupt_handler(uint32_t id, |
| 51 | uint32_t flags, |
| 52 | void *handle, |
| 53 | void *cookie); |
| 54 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 55 | /* |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 56 | * Helper function to obtain the array storing the EL3 |
| 57 | * Logical Partition descriptors. |
| 58 | */ |
| 59 | struct el3_lp_desc *get_el3_lp_array(void) |
| 60 | { |
| 61 | return (struct el3_lp_desc *) EL3_LP_DESCS_START; |
| 62 | } |
| 63 | |
| 64 | /* |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 65 | * Helper function to obtain the descriptor of the last SP to whom control was |
| 66 | * handed to on this physical cpu. Currently, we assume there is only one SP. |
| 67 | * TODO: Expand to track multiple partitions when required. |
| 68 | */ |
| 69 | struct secure_partition_desc *spmc_get_current_sp_ctx(void) |
| 70 | { |
| 71 | return &(sp_desc[ACTIVE_SP_DESC_INDEX]); |
| 72 | } |
| 73 | |
| 74 | /* |
| 75 | * Helper function to obtain the execution context of an SP on the |
| 76 | * current physical cpu. |
| 77 | */ |
| 78 | struct sp_exec_ctx *spmc_get_sp_ec(struct secure_partition_desc *sp) |
| 79 | { |
| 80 | return &(sp->ec[get_ec_index(sp)]); |
| 81 | } |
| 82 | |
| 83 | /* Helper function to get pointer to SP context from its ID. */ |
| 84 | struct secure_partition_desc *spmc_get_sp_ctx(uint16_t id) |
| 85 | { |
Marc Bonnici | e95eb7c | 2021-12-08 14:24:03 +0000 | [diff] [blame] | 86 | /* Check for Secure World Partitions. */ |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 87 | for (unsigned int i = 0U; i < SECURE_PARTITION_COUNT; i++) { |
| 88 | if (sp_desc[i].sp_id == id) { |
| 89 | return &(sp_desc[i]); |
| 90 | } |
| 91 | } |
| 92 | return NULL; |
| 93 | } |
| 94 | |
Marc Bonnici | 52a9cbc | 2021-11-24 10:32:16 +0000 | [diff] [blame] | 95 | /* |
| 96 | * Helper function to obtain the descriptor of the Hypervisor or OS kernel. |
| 97 | * We assume that the first descriptor is reserved for this entity. |
| 98 | */ |
| 99 | struct ns_endpoint_desc *spmc_get_hyp_ctx(void) |
| 100 | { |
| 101 | return &(ns_ep_desc[0]); |
| 102 | } |
| 103 | |
Marc Bonnici | a2cfa61 | 2021-11-24 10:33:48 +0000 | [diff] [blame] | 104 | /* |
| 105 | * Helper function to obtain the RX/TX buffer pair descriptor of the Hypervisor |
| 106 | * or OS kernel in the normal world or the last SP that was run. |
| 107 | */ |
| 108 | struct mailbox *spmc_get_mbox_desc(bool secure_origin) |
| 109 | { |
| 110 | /* Obtain the RX/TX buffer pair descriptor. */ |
| 111 | if (secure_origin) { |
| 112 | return &(spmc_get_current_sp_ctx()->mailbox); |
| 113 | } else { |
| 114 | return &(spmc_get_hyp_ctx()->mailbox); |
| 115 | } |
| 116 | } |
| 117 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 118 | /****************************************************************************** |
| 119 | * This function returns to the place where spmc_sp_synchronous_entry() was |
| 120 | * called originally. |
| 121 | ******************************************************************************/ |
| 122 | __dead2 void spmc_sp_synchronous_exit(struct sp_exec_ctx *ec, uint64_t rc) |
| 123 | { |
| 124 | /* |
| 125 | * The SPM must have initiated the original request through a |
| 126 | * synchronous entry into the secure partition. Jump back to the |
| 127 | * original C runtime context with the value of rc in x0; |
| 128 | */ |
| 129 | spm_secure_partition_exit(ec->c_rt_ctx, rc); |
| 130 | |
| 131 | panic(); |
| 132 | } |
| 133 | |
| 134 | /******************************************************************************* |
| 135 | * Return FFA_ERROR with specified error code. |
| 136 | ******************************************************************************/ |
| 137 | uint64_t spmc_ffa_error_return(void *handle, int error_code) |
| 138 | { |
| 139 | SMC_RET8(handle, FFA_ERROR, |
| 140 | FFA_TARGET_INFO_MBZ, error_code, |
| 141 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 142 | FFA_PARAM_MBZ, FFA_PARAM_MBZ); |
| 143 | } |
| 144 | |
| 145 | /****************************************************************************** |
| 146 | * Helper function to validate a secure partition ID to ensure it does not |
| 147 | * conflict with any other FF-A component and follows the convention to |
| 148 | * indicate it resides within the secure world. |
| 149 | ******************************************************************************/ |
| 150 | bool is_ffa_secure_id_valid(uint16_t partition_id) |
| 151 | { |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 152 | struct el3_lp_desc *el3_lp_descs = get_el3_lp_array(); |
| 153 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 154 | /* Ensure the ID is not the invalid partition ID. */ |
| 155 | if (partition_id == INV_SP_ID) { |
| 156 | return false; |
| 157 | } |
| 158 | |
| 159 | /* Ensure the ID is not the SPMD ID. */ |
| 160 | if (partition_id == SPMD_DIRECT_MSG_ENDPOINT_ID) { |
| 161 | return false; |
| 162 | } |
| 163 | |
| 164 | /* |
| 165 | * Ensure the ID follows the convention to indicate it resides |
| 166 | * in the secure world. |
| 167 | */ |
| 168 | if (!ffa_is_secure_world_id(partition_id)) { |
| 169 | return false; |
| 170 | } |
| 171 | |
| 172 | /* Ensure we don't conflict with the SPMC partition ID. */ |
| 173 | if (partition_id == FFA_SPMC_ID) { |
| 174 | return false; |
| 175 | } |
| 176 | |
| 177 | /* Ensure we do not already have an SP context with this ID. */ |
| 178 | if (spmc_get_sp_ctx(partition_id)) { |
| 179 | return false; |
| 180 | } |
| 181 | |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 182 | /* Ensure we don't clash with any Logical SP's. */ |
| 183 | for (unsigned int i = 0U; i < EL3_LP_DESCS_COUNT; i++) { |
| 184 | if (el3_lp_descs[i].sp_id == partition_id) { |
| 185 | return false; |
| 186 | } |
| 187 | } |
| 188 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 189 | return true; |
| 190 | } |
| 191 | |
| 192 | /******************************************************************************* |
Marc Bonnici | 7e19db8 | 2021-11-29 17:17:29 +0000 | [diff] [blame] | 193 | * This function either forwards the request to the other world or returns |
| 194 | * with an ERET depending on the source of the call. |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 195 | * We can assume that the destination is for an entity at a lower exception |
| 196 | * level as any messages destined for a logical SP resident in EL3 will have |
| 197 | * already been taken care of by the SPMC before entering this function. |
Marc Bonnici | 7e19db8 | 2021-11-29 17:17:29 +0000 | [diff] [blame] | 198 | ******************************************************************************/ |
| 199 | static uint64_t spmc_smc_return(uint32_t smc_fid, |
| 200 | bool secure_origin, |
| 201 | uint64_t x1, |
| 202 | uint64_t x2, |
| 203 | uint64_t x3, |
| 204 | uint64_t x4, |
| 205 | void *handle, |
| 206 | void *cookie, |
| 207 | uint64_t flags, |
| 208 | uint16_t dst_id) |
| 209 | { |
| 210 | /* If the destination is in the normal world always go via the SPMD. */ |
| 211 | if (ffa_is_normal_world_id(dst_id)) { |
| 212 | return spmd_smc_handler(smc_fid, x1, x2, x3, x4, |
| 213 | cookie, handle, flags); |
| 214 | } |
| 215 | /* |
| 216 | * If the caller is secure and we want to return to the secure world, |
| 217 | * ERET directly. |
| 218 | */ |
| 219 | else if (secure_origin && ffa_is_secure_world_id(dst_id)) { |
| 220 | SMC_RET5(handle, smc_fid, x1, x2, x3, x4); |
| 221 | } |
| 222 | /* If we originated in the normal world then switch contexts. */ |
| 223 | else if (!secure_origin && ffa_is_secure_world_id(dst_id)) { |
| 224 | return spmd_smc_switch_state(smc_fid, secure_origin, x1, x2, |
| 225 | x3, x4, handle); |
| 226 | } else { |
| 227 | /* Unknown State. */ |
| 228 | panic(); |
| 229 | } |
| 230 | |
| 231 | /* Shouldn't be Reached. */ |
| 232 | return 0; |
| 233 | } |
| 234 | |
| 235 | /******************************************************************************* |
Marc Bonnici | 8eb1520 | 2021-11-29 17:05:33 +0000 | [diff] [blame] | 236 | * FF-A ABI Handlers. |
| 237 | ******************************************************************************/ |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 238 | |
| 239 | /******************************************************************************* |
| 240 | * Helper function to validate arg2 as part of a direct message. |
| 241 | ******************************************************************************/ |
| 242 | static inline bool direct_msg_validate_arg2(uint64_t x2) |
| 243 | { |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 244 | /* Check message type. */ |
| 245 | if (x2 & FFA_FWK_MSG_BIT) { |
| 246 | /* We have a framework message, ensure it is a known message. */ |
| 247 | if (x2 & ~(FFA_FWK_MSG_MASK | FFA_FWK_MSG_BIT)) { |
| 248 | VERBOSE("Invalid message format 0x%lx.\n", x2); |
| 249 | return false; |
| 250 | } |
| 251 | } else { |
| 252 | /* We have a partition messages, ensure x2 is not set. */ |
| 253 | if (x2 != (uint64_t) 0) { |
| 254 | VERBOSE("Arg2 MBZ for partition messages. (0x%lx).\n", |
| 255 | x2); |
| 256 | return false; |
| 257 | } |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 258 | } |
| 259 | return true; |
| 260 | } |
| 261 | |
| 262 | /******************************************************************************* |
| 263 | * Handle direct request messages and route to the appropriate destination. |
| 264 | ******************************************************************************/ |
| 265 | static uint64_t direct_req_smc_handler(uint32_t smc_fid, |
| 266 | bool secure_origin, |
| 267 | uint64_t x1, |
| 268 | uint64_t x2, |
| 269 | uint64_t x3, |
| 270 | uint64_t x4, |
| 271 | void *cookie, |
| 272 | void *handle, |
| 273 | uint64_t flags) |
| 274 | { |
| 275 | uint16_t dst_id = ffa_endpoint_destination(x1); |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 276 | struct el3_lp_desc *el3_lp_descs; |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 277 | struct secure_partition_desc *sp; |
| 278 | unsigned int idx; |
| 279 | |
| 280 | /* Check if arg2 has been populated correctly based on message type. */ |
| 281 | if (!direct_msg_validate_arg2(x2)) { |
| 282 | return spmc_ffa_error_return(handle, |
| 283 | FFA_ERROR_INVALID_PARAMETER); |
| 284 | } |
| 285 | |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 286 | el3_lp_descs = get_el3_lp_array(); |
| 287 | |
| 288 | /* Check if the request is destined for a Logical Partition. */ |
| 289 | for (unsigned int i = 0U; i < MAX_EL3_LP_DESCS_COUNT; i++) { |
| 290 | if (el3_lp_descs[i].sp_id == dst_id) { |
| 291 | return el3_lp_descs[i].direct_req( |
| 292 | smc_fid, secure_origin, x1, x2, x3, x4, |
| 293 | cookie, handle, flags); |
| 294 | } |
| 295 | } |
| 296 | |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 297 | /* |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 298 | * If the request was not targeted to a LSP and from the secure world |
| 299 | * then it is invalid since a SP cannot call into the Normal world and |
| 300 | * there is no other SP to call into. If there are other SPs in future |
| 301 | * then the partition runtime model would need to be validated as well. |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 302 | */ |
| 303 | if (secure_origin) { |
| 304 | VERBOSE("Direct request not supported to the Normal World.\n"); |
| 305 | return spmc_ffa_error_return(handle, |
| 306 | FFA_ERROR_INVALID_PARAMETER); |
| 307 | } |
| 308 | |
| 309 | /* Check if the SP ID is valid. */ |
| 310 | sp = spmc_get_sp_ctx(dst_id); |
| 311 | if (sp == NULL) { |
| 312 | VERBOSE("Direct request to unknown partition ID (0x%x).\n", |
| 313 | dst_id); |
| 314 | return spmc_ffa_error_return(handle, |
| 315 | FFA_ERROR_INVALID_PARAMETER); |
| 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Check that the target execution context is in a waiting state before |
| 320 | * forwarding the direct request to it. |
| 321 | */ |
| 322 | idx = get_ec_index(sp); |
| 323 | if (sp->ec[idx].rt_state != RT_STATE_WAITING) { |
| 324 | VERBOSE("SP context on core%u is not waiting (%u).\n", |
| 325 | idx, sp->ec[idx].rt_model); |
| 326 | return spmc_ffa_error_return(handle, FFA_ERROR_BUSY); |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * Everything checks out so forward the request to the SP after updating |
| 331 | * its state and runtime model. |
| 332 | */ |
| 333 | sp->ec[idx].rt_state = RT_STATE_RUNNING; |
| 334 | sp->ec[idx].rt_model = RT_MODEL_DIR_REQ; |
| 335 | return spmc_smc_return(smc_fid, secure_origin, x1, x2, x3, x4, |
| 336 | handle, cookie, flags, dst_id); |
| 337 | } |
| 338 | |
| 339 | /******************************************************************************* |
| 340 | * Handle direct response messages and route to the appropriate destination. |
| 341 | ******************************************************************************/ |
| 342 | static uint64_t direct_resp_smc_handler(uint32_t smc_fid, |
| 343 | bool secure_origin, |
| 344 | uint64_t x1, |
| 345 | uint64_t x2, |
| 346 | uint64_t x3, |
| 347 | uint64_t x4, |
| 348 | void *cookie, |
| 349 | void *handle, |
| 350 | uint64_t flags) |
| 351 | { |
| 352 | uint16_t dst_id = ffa_endpoint_destination(x1); |
| 353 | struct secure_partition_desc *sp; |
| 354 | unsigned int idx; |
| 355 | |
| 356 | /* Check if arg2 has been populated correctly based on message type. */ |
| 357 | if (!direct_msg_validate_arg2(x2)) { |
| 358 | return spmc_ffa_error_return(handle, |
| 359 | FFA_ERROR_INVALID_PARAMETER); |
| 360 | } |
| 361 | |
| 362 | /* Check that the response did not originate from the Normal world. */ |
| 363 | if (!secure_origin) { |
| 364 | VERBOSE("Direct Response not supported from Normal World.\n"); |
| 365 | return spmc_ffa_error_return(handle, |
| 366 | FFA_ERROR_INVALID_PARAMETER); |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * Check that the response is either targeted to the Normal world or the |
| 371 | * SPMC e.g. a PM response. |
| 372 | */ |
| 373 | if ((dst_id != FFA_SPMC_ID) && ffa_is_secure_world_id(dst_id)) { |
| 374 | VERBOSE("Direct response to invalid partition ID (0x%x).\n", |
| 375 | dst_id); |
| 376 | return spmc_ffa_error_return(handle, |
| 377 | FFA_ERROR_INVALID_PARAMETER); |
| 378 | } |
| 379 | |
| 380 | /* Obtain the SP descriptor and update its runtime state. */ |
| 381 | sp = spmc_get_sp_ctx(ffa_endpoint_source(x1)); |
| 382 | if (sp == NULL) { |
| 383 | VERBOSE("Direct response to unknown partition ID (0x%x).\n", |
| 384 | dst_id); |
| 385 | return spmc_ffa_error_return(handle, |
| 386 | FFA_ERROR_INVALID_PARAMETER); |
| 387 | } |
| 388 | |
| 389 | /* Sanity check state is being tracked correctly in the SPMC. */ |
| 390 | idx = get_ec_index(sp); |
| 391 | assert(sp->ec[idx].rt_state == RT_STATE_RUNNING); |
| 392 | |
| 393 | /* Ensure SP execution context was in the right runtime model. */ |
| 394 | if (sp->ec[idx].rt_model != RT_MODEL_DIR_REQ) { |
| 395 | VERBOSE("SP context on core%u not handling direct req (%u).\n", |
| 396 | idx, sp->ec[idx].rt_model); |
| 397 | return spmc_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 398 | } |
| 399 | |
| 400 | /* Update the state of the SP execution context. */ |
| 401 | sp->ec[idx].rt_state = RT_STATE_WAITING; |
| 402 | |
| 403 | /* |
| 404 | * If the receiver is not the SPMC then forward the response to the |
| 405 | * Normal world. |
| 406 | */ |
| 407 | if (dst_id == FFA_SPMC_ID) { |
| 408 | spmc_sp_synchronous_exit(&sp->ec[idx], x4); |
| 409 | /* Should not get here. */ |
| 410 | panic(); |
| 411 | } |
| 412 | |
| 413 | return spmc_smc_return(smc_fid, secure_origin, x1, x2, x3, x4, |
| 414 | handle, cookie, flags, dst_id); |
| 415 | } |
| 416 | |
Marc Bonnici | 8eb1520 | 2021-11-29 17:05:33 +0000 | [diff] [blame] | 417 | /******************************************************************************* |
| 418 | * This function handles the FFA_MSG_WAIT SMC to allow an SP to relinquish its |
| 419 | * cycles. |
| 420 | ******************************************************************************/ |
| 421 | static uint64_t msg_wait_handler(uint32_t smc_fid, |
| 422 | bool secure_origin, |
| 423 | uint64_t x1, |
| 424 | uint64_t x2, |
| 425 | uint64_t x3, |
| 426 | uint64_t x4, |
| 427 | void *cookie, |
| 428 | void *handle, |
| 429 | uint64_t flags) |
| 430 | { |
| 431 | struct secure_partition_desc *sp; |
| 432 | unsigned int idx; |
| 433 | |
| 434 | /* |
| 435 | * Check that the response did not originate from the Normal world as |
| 436 | * only the secure world can call this ABI. |
| 437 | */ |
| 438 | if (!secure_origin) { |
| 439 | VERBOSE("Normal world cannot call FFA_MSG_WAIT.\n"); |
| 440 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 441 | } |
| 442 | |
| 443 | /* Get the descriptor of the SP that invoked FFA_MSG_WAIT. */ |
| 444 | sp = spmc_get_current_sp_ctx(); |
| 445 | if (sp == NULL) { |
| 446 | return spmc_ffa_error_return(handle, |
| 447 | FFA_ERROR_INVALID_PARAMETER); |
| 448 | } |
| 449 | |
| 450 | /* |
| 451 | * Get the execution context of the SP that invoked FFA_MSG_WAIT. |
| 452 | */ |
| 453 | idx = get_ec_index(sp); |
| 454 | |
| 455 | /* Ensure SP execution context was in the right runtime model. */ |
| 456 | if (sp->ec[idx].rt_model == RT_MODEL_DIR_REQ) { |
| 457 | return spmc_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 458 | } |
| 459 | |
| 460 | /* Sanity check the state is being tracked correctly in the SPMC. */ |
| 461 | assert(sp->ec[idx].rt_state == RT_STATE_RUNNING); |
| 462 | |
| 463 | /* |
| 464 | * Perform a synchronous exit if the partition was initialising. The |
| 465 | * state is updated after the exit. |
| 466 | */ |
| 467 | if (sp->ec[idx].rt_model == RT_MODEL_INIT) { |
| 468 | spmc_sp_synchronous_exit(&sp->ec[idx], x4); |
| 469 | /* Should not get here */ |
| 470 | panic(); |
| 471 | } |
| 472 | |
| 473 | /* Update the state of the SP execution context. */ |
| 474 | sp->ec[idx].rt_state = RT_STATE_WAITING; |
| 475 | |
| 476 | /* Resume normal world if a secure interrupt was handled. */ |
| 477 | if (sp->ec[idx].rt_model == RT_MODEL_INTR) { |
| 478 | /* FFA_MSG_WAIT can only be called from the secure world. */ |
| 479 | unsigned int secure_state_in = SECURE; |
| 480 | unsigned int secure_state_out = NON_SECURE; |
| 481 | |
| 482 | cm_el1_sysregs_context_save(secure_state_in); |
| 483 | cm_el1_sysregs_context_restore(secure_state_out); |
| 484 | cm_set_next_eret_context(secure_state_out); |
| 485 | SMC_RET0(cm_get_context(secure_state_out)); |
| 486 | } |
| 487 | |
| 488 | /* Forward the response to the Normal world. */ |
| 489 | return spmc_smc_return(smc_fid, secure_origin, x1, x2, x3, x4, |
| 490 | handle, cookie, flags, FFA_NWD_ID); |
| 491 | } |
| 492 | |
Marc Bonnici | b4e9984 | 2021-12-10 09:21:56 +0000 | [diff] [blame] | 493 | static uint64_t ffa_error_handler(uint32_t smc_fid, |
| 494 | bool secure_origin, |
| 495 | uint64_t x1, |
| 496 | uint64_t x2, |
| 497 | uint64_t x3, |
| 498 | uint64_t x4, |
| 499 | void *cookie, |
| 500 | void *handle, |
| 501 | uint64_t flags) |
| 502 | { |
| 503 | struct secure_partition_desc *sp; |
| 504 | unsigned int idx; |
| 505 | |
| 506 | /* Check that the response did not originate from the Normal world. */ |
| 507 | if (!secure_origin) { |
| 508 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 509 | } |
| 510 | |
| 511 | /* Get the descriptor of the SP that invoked FFA_ERROR. */ |
| 512 | sp = spmc_get_current_sp_ctx(); |
| 513 | if (sp == NULL) { |
| 514 | return spmc_ffa_error_return(handle, |
| 515 | FFA_ERROR_INVALID_PARAMETER); |
| 516 | } |
| 517 | |
| 518 | /* Get the execution context of the SP that invoked FFA_ERROR. */ |
| 519 | idx = get_ec_index(sp); |
| 520 | |
| 521 | /* |
| 522 | * We only expect FFA_ERROR to be received during SP initialisation |
| 523 | * otherwise this is an invalid call. |
| 524 | */ |
| 525 | if (sp->ec[idx].rt_model == RT_MODEL_INIT) { |
| 526 | ERROR("SP 0x%x failed to initialize.\n", sp->sp_id); |
| 527 | spmc_sp_synchronous_exit(&sp->ec[idx], x2); |
| 528 | /* Should not get here. */ |
| 529 | panic(); |
| 530 | } |
| 531 | |
| 532 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 533 | } |
| 534 | |
Marc Bonnici | e95eb7c | 2021-12-08 14:24:03 +0000 | [diff] [blame] | 535 | static uint64_t ffa_version_handler(uint32_t smc_fid, |
| 536 | bool secure_origin, |
| 537 | uint64_t x1, |
| 538 | uint64_t x2, |
| 539 | uint64_t x3, |
| 540 | uint64_t x4, |
| 541 | void *cookie, |
| 542 | void *handle, |
| 543 | uint64_t flags) |
| 544 | { |
| 545 | uint32_t requested_version = x1 & FFA_VERSION_MASK; |
| 546 | |
| 547 | if (requested_version & FFA_VERSION_BIT31_MASK) { |
| 548 | /* Invalid encoding, return an error. */ |
| 549 | SMC_RET1(handle, FFA_ERROR_NOT_SUPPORTED); |
| 550 | /* Execution stops here. */ |
| 551 | } |
| 552 | |
| 553 | /* Determine the caller to store the requested version. */ |
| 554 | if (secure_origin) { |
| 555 | /* |
| 556 | * Ensure that the SP is reporting the same version as |
| 557 | * specified in its manifest. If these do not match there is |
| 558 | * something wrong with the SP. |
| 559 | * TODO: Should we abort the SP? For now assert this is not |
| 560 | * case. |
| 561 | */ |
| 562 | assert(requested_version == |
| 563 | spmc_get_current_sp_ctx()->ffa_version); |
| 564 | } else { |
| 565 | /* |
| 566 | * If this is called by the normal world, record this |
| 567 | * information in its descriptor. |
| 568 | */ |
| 569 | spmc_get_hyp_ctx()->ffa_version = requested_version; |
| 570 | } |
| 571 | |
| 572 | SMC_RET1(handle, MAKE_FFA_VERSION(FFA_VERSION_MAJOR, |
| 573 | FFA_VERSION_MINOR)); |
| 574 | } |
| 575 | |
Marc Bonnici | 8eb1520 | 2021-11-29 17:05:33 +0000 | [diff] [blame] | 576 | /******************************************************************************* |
Marc Bonnici | 73fbe8f | 2021-12-09 11:32:30 +0000 | [diff] [blame] | 577 | * Helper function to obtain the FF-A version of the calling partition. |
| 578 | ******************************************************************************/ |
| 579 | uint32_t get_partition_ffa_version(bool secure_origin) |
| 580 | { |
| 581 | if (secure_origin) { |
| 582 | return spmc_get_current_sp_ctx()->ffa_version; |
| 583 | } else { |
| 584 | return spmc_get_hyp_ctx()->ffa_version; |
| 585 | } |
| 586 | } |
| 587 | |
Marc Bonnici | 0cf1a15 | 2021-08-25 12:09:37 +0100 | [diff] [blame] | 588 | static uint64_t rxtx_map_handler(uint32_t smc_fid, |
| 589 | bool secure_origin, |
| 590 | uint64_t x1, |
| 591 | uint64_t x2, |
| 592 | uint64_t x3, |
| 593 | uint64_t x4, |
| 594 | void *cookie, |
| 595 | void *handle, |
| 596 | uint64_t flags) |
| 597 | { |
| 598 | int ret; |
| 599 | uint32_t error_code; |
| 600 | uint32_t mem_atts = secure_origin ? MT_SECURE : MT_NS; |
| 601 | struct mailbox *mbox; |
| 602 | uintptr_t tx_address = x1; |
| 603 | uintptr_t rx_address = x2; |
| 604 | uint32_t page_count = x3 & FFA_RXTX_PAGE_COUNT_MASK; /* Bits [5:0] */ |
| 605 | uint32_t buf_size = page_count * FFA_PAGE_SIZE; |
| 606 | |
| 607 | /* |
| 608 | * The SPMC does not support mapping of VM RX/TX pairs to facilitate |
| 609 | * indirect messaging with SPs. Check if the Hypervisor has invoked this |
| 610 | * ABI on behalf of a VM and reject it if this is the case. |
| 611 | */ |
| 612 | if (tx_address == 0 || rx_address == 0) { |
| 613 | WARN("Mapping RX/TX Buffers on behalf of VM not supported.\n"); |
| 614 | return spmc_ffa_error_return(handle, |
| 615 | FFA_ERROR_INVALID_PARAMETER); |
| 616 | } |
| 617 | |
| 618 | /* Ensure the specified buffers are not the same. */ |
| 619 | if (tx_address == rx_address) { |
| 620 | WARN("TX Buffer must not be the same as RX Buffer.\n"); |
| 621 | return spmc_ffa_error_return(handle, |
| 622 | FFA_ERROR_INVALID_PARAMETER); |
| 623 | } |
| 624 | |
| 625 | /* Ensure the buffer size is not 0. */ |
| 626 | if (buf_size == 0U) { |
| 627 | WARN("Buffer size must not be 0\n"); |
| 628 | return spmc_ffa_error_return(handle, |
| 629 | FFA_ERROR_INVALID_PARAMETER); |
| 630 | } |
| 631 | |
| 632 | /* |
| 633 | * Ensure the buffer size is a multiple of the translation granule size |
| 634 | * in TF-A. |
| 635 | */ |
| 636 | if (buf_size % PAGE_SIZE != 0U) { |
| 637 | WARN("Buffer size must be aligned to translation granule.\n"); |
| 638 | return spmc_ffa_error_return(handle, |
| 639 | FFA_ERROR_INVALID_PARAMETER); |
| 640 | } |
| 641 | |
| 642 | /* Obtain the RX/TX buffer pair descriptor. */ |
| 643 | mbox = spmc_get_mbox_desc(secure_origin); |
| 644 | |
| 645 | spin_lock(&mbox->lock); |
| 646 | |
| 647 | /* Check if buffers have already been mapped. */ |
| 648 | if (mbox->rx_buffer != 0 || mbox->tx_buffer != 0) { |
| 649 | WARN("RX/TX Buffers already mapped (%p/%p)\n", |
| 650 | (void *) mbox->rx_buffer, (void *)mbox->tx_buffer); |
| 651 | error_code = FFA_ERROR_DENIED; |
| 652 | goto err; |
| 653 | } |
| 654 | |
| 655 | /* memmap the TX buffer as read only. */ |
| 656 | ret = mmap_add_dynamic_region(tx_address, /* PA */ |
| 657 | tx_address, /* VA */ |
| 658 | buf_size, /* size */ |
| 659 | mem_atts | MT_RO_DATA); /* attrs */ |
| 660 | if (ret != 0) { |
| 661 | /* Return the correct error code. */ |
| 662 | error_code = (ret == -ENOMEM) ? FFA_ERROR_NO_MEMORY : |
| 663 | FFA_ERROR_INVALID_PARAMETER; |
| 664 | WARN("Unable to map TX buffer: %d\n", error_code); |
| 665 | goto err; |
| 666 | } |
| 667 | |
| 668 | /* memmap the RX buffer as read write. */ |
| 669 | ret = mmap_add_dynamic_region(rx_address, /* PA */ |
| 670 | rx_address, /* VA */ |
| 671 | buf_size, /* size */ |
| 672 | mem_atts | MT_RW_DATA); /* attrs */ |
| 673 | |
| 674 | if (ret != 0) { |
| 675 | error_code = (ret == -ENOMEM) ? FFA_ERROR_NO_MEMORY : |
| 676 | FFA_ERROR_INVALID_PARAMETER; |
| 677 | WARN("Unable to map RX buffer: %d\n", error_code); |
| 678 | /* Unmap the TX buffer again. */ |
| 679 | mmap_remove_dynamic_region(tx_address, buf_size); |
| 680 | goto err; |
| 681 | } |
| 682 | |
| 683 | mbox->tx_buffer = (void *) tx_address; |
| 684 | mbox->rx_buffer = (void *) rx_address; |
| 685 | mbox->rxtx_page_count = page_count; |
| 686 | spin_unlock(&mbox->lock); |
| 687 | |
| 688 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 689 | /* Execution stops here. */ |
| 690 | err: |
| 691 | spin_unlock(&mbox->lock); |
| 692 | return spmc_ffa_error_return(handle, error_code); |
| 693 | } |
| 694 | |
| 695 | static uint64_t rxtx_unmap_handler(uint32_t smc_fid, |
| 696 | bool secure_origin, |
| 697 | uint64_t x1, |
| 698 | uint64_t x2, |
| 699 | uint64_t x3, |
| 700 | uint64_t x4, |
| 701 | void *cookie, |
| 702 | void *handle, |
| 703 | uint64_t flags) |
| 704 | { |
| 705 | struct mailbox *mbox = spmc_get_mbox_desc(secure_origin); |
| 706 | uint32_t buf_size = mbox->rxtx_page_count * FFA_PAGE_SIZE; |
| 707 | |
| 708 | /* |
| 709 | * The SPMC does not support mapping of VM RX/TX pairs to facilitate |
| 710 | * indirect messaging with SPs. Check if the Hypervisor has invoked this |
| 711 | * ABI on behalf of a VM and reject it if this is the case. |
| 712 | */ |
| 713 | if (x1 != 0UL) { |
| 714 | return spmc_ffa_error_return(handle, |
| 715 | FFA_ERROR_INVALID_PARAMETER); |
| 716 | } |
| 717 | |
| 718 | spin_lock(&mbox->lock); |
| 719 | |
| 720 | /* Check if buffers are currently mapped. */ |
| 721 | if (mbox->rx_buffer == 0 || mbox->tx_buffer == 0) { |
| 722 | spin_unlock(&mbox->lock); |
| 723 | return spmc_ffa_error_return(handle, |
| 724 | FFA_ERROR_INVALID_PARAMETER); |
| 725 | } |
| 726 | |
| 727 | /* Unmap RX Buffer */ |
| 728 | if (mmap_remove_dynamic_region((uintptr_t) mbox->rx_buffer, |
| 729 | buf_size) != 0) { |
| 730 | WARN("Unable to unmap RX buffer!\n"); |
| 731 | } |
| 732 | |
| 733 | mbox->rx_buffer = 0; |
| 734 | |
| 735 | /* Unmap TX Buffer */ |
| 736 | if (mmap_remove_dynamic_region((uintptr_t) mbox->tx_buffer, |
| 737 | buf_size) != 0) { |
| 738 | WARN("Unable to unmap TX buffer!\n"); |
| 739 | } |
| 740 | |
| 741 | mbox->tx_buffer = 0; |
| 742 | mbox->rxtx_page_count = 0; |
| 743 | |
| 744 | spin_unlock(&mbox->lock); |
| 745 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 746 | } |
| 747 | |
Marc Bonnici | 37dd8e1 | 2021-08-17 18:00:07 +0100 | [diff] [blame] | 748 | /* |
| 749 | * Collate the partition information in a v1.1 partition information |
| 750 | * descriptor format, this will be converter later if required. |
| 751 | */ |
| 752 | static int partition_info_get_handler_v1_1(uint32_t *uuid, |
| 753 | struct ffa_partition_info_v1_1 |
| 754 | *partitions, |
| 755 | uint32_t max_partitions, |
| 756 | uint32_t *partition_count) |
| 757 | { |
| 758 | uint32_t index; |
| 759 | struct ffa_partition_info_v1_1 *desc; |
| 760 | bool null_uuid = is_null_uuid(uuid); |
| 761 | struct el3_lp_desc *el3_lp_descs = get_el3_lp_array(); |
| 762 | |
| 763 | /* Deal with Logical Partitions. */ |
| 764 | for (index = 0U; index < EL3_LP_DESCS_COUNT; index++) { |
| 765 | if (null_uuid || uuid_match(uuid, el3_lp_descs[index].uuid)) { |
| 766 | /* Found a matching UUID, populate appropriately. */ |
| 767 | if (*partition_count >= max_partitions) { |
| 768 | return FFA_ERROR_NO_MEMORY; |
| 769 | } |
| 770 | |
| 771 | desc = &partitions[*partition_count]; |
| 772 | desc->ep_id = el3_lp_descs[index].sp_id; |
| 773 | desc->execution_ctx_count = PLATFORM_CORE_COUNT; |
| 774 | desc->properties = el3_lp_descs[index].properties; |
| 775 | if (null_uuid) { |
| 776 | copy_uuid(desc->uuid, el3_lp_descs[index].uuid); |
| 777 | } |
| 778 | (*partition_count)++; |
| 779 | } |
| 780 | } |
| 781 | |
| 782 | /* Deal with physical SP's. */ |
| 783 | for (index = 0U; index < SECURE_PARTITION_COUNT; index++) { |
| 784 | if (null_uuid || uuid_match(uuid, sp_desc[index].uuid)) { |
| 785 | /* Found a matching UUID, populate appropriately. */ |
| 786 | if (*partition_count >= max_partitions) { |
| 787 | return FFA_ERROR_NO_MEMORY; |
| 788 | } |
| 789 | |
| 790 | desc = &partitions[*partition_count]; |
| 791 | desc->ep_id = sp_desc[index].sp_id; |
| 792 | /* |
| 793 | * Execution context count must match No. cores for |
| 794 | * S-EL1 SPs. |
| 795 | */ |
| 796 | desc->execution_ctx_count = PLATFORM_CORE_COUNT; |
| 797 | desc->properties = sp_desc[index].properties; |
| 798 | if (null_uuid) { |
| 799 | copy_uuid(desc->uuid, sp_desc[index].uuid); |
| 800 | } |
| 801 | (*partition_count)++; |
| 802 | } |
| 803 | } |
| 804 | return 0; |
| 805 | } |
| 806 | |
| 807 | /* |
| 808 | * Handle the case where that caller only wants the count of partitions |
| 809 | * matching a given UUID and does not want the corresponding descriptors |
| 810 | * populated. |
| 811 | */ |
| 812 | static uint32_t partition_info_get_handler_count_only(uint32_t *uuid) |
| 813 | { |
| 814 | uint32_t index = 0; |
| 815 | uint32_t partition_count = 0; |
| 816 | bool null_uuid = is_null_uuid(uuid); |
| 817 | struct el3_lp_desc *el3_lp_descs = get_el3_lp_array(); |
| 818 | |
| 819 | /* Deal with Logical Partitions. */ |
| 820 | for (index = 0U; index < EL3_LP_DESCS_COUNT; index++) { |
| 821 | if (null_uuid || |
| 822 | uuid_match(uuid, el3_lp_descs[index].uuid)) { |
| 823 | (partition_count)++; |
| 824 | } |
| 825 | } |
| 826 | |
| 827 | /* Deal with physical SP's. */ |
| 828 | for (index = 0U; index < SECURE_PARTITION_COUNT; index++) { |
| 829 | if (null_uuid || uuid_match(uuid, sp_desc[index].uuid)) { |
| 830 | (partition_count)++; |
| 831 | } |
| 832 | } |
| 833 | return partition_count; |
| 834 | } |
| 835 | |
| 836 | /* |
| 837 | * If the caller of the PARTITION_INFO_GET ABI was a v1.0 caller, populate |
| 838 | * the coresponding descriptor format from the v1.1 descriptor array. |
| 839 | */ |
| 840 | static uint64_t partition_info_populate_v1_0(struct ffa_partition_info_v1_1 |
| 841 | *partitions, |
| 842 | struct mailbox *mbox, |
| 843 | int partition_count) |
| 844 | { |
| 845 | uint32_t index; |
| 846 | uint32_t buf_size; |
| 847 | uint32_t descriptor_size; |
| 848 | struct ffa_partition_info_v1_0 *v1_0_partitions = |
| 849 | (struct ffa_partition_info_v1_0 *) mbox->rx_buffer; |
| 850 | |
| 851 | buf_size = mbox->rxtx_page_count * FFA_PAGE_SIZE; |
| 852 | descriptor_size = partition_count * |
| 853 | sizeof(struct ffa_partition_info_v1_0); |
| 854 | |
| 855 | if (descriptor_size > buf_size) { |
| 856 | return FFA_ERROR_NO_MEMORY; |
| 857 | } |
| 858 | |
| 859 | for (index = 0U; index < partition_count; index++) { |
| 860 | v1_0_partitions[index].ep_id = partitions[index].ep_id; |
| 861 | v1_0_partitions[index].execution_ctx_count = |
| 862 | partitions[index].execution_ctx_count; |
| 863 | v1_0_partitions[index].properties = |
| 864 | partitions[index].properties; |
| 865 | } |
| 866 | return 0; |
| 867 | } |
| 868 | |
| 869 | /* |
| 870 | * Main handler for FFA_PARTITION_INFO_GET which supports both FF-A v1.1 and |
| 871 | * v1.0 implementations. |
| 872 | */ |
| 873 | static uint64_t partition_info_get_handler(uint32_t smc_fid, |
| 874 | bool secure_origin, |
| 875 | uint64_t x1, |
| 876 | uint64_t x2, |
| 877 | uint64_t x3, |
| 878 | uint64_t x4, |
| 879 | void *cookie, |
| 880 | void *handle, |
| 881 | uint64_t flags) |
| 882 | { |
| 883 | int ret; |
| 884 | uint32_t partition_count = 0; |
| 885 | uint32_t size = 0; |
| 886 | uint32_t ffa_version = get_partition_ffa_version(secure_origin); |
| 887 | struct mailbox *mbox; |
| 888 | uint64_t info_get_flags; |
| 889 | bool count_only; |
| 890 | uint32_t uuid[4]; |
| 891 | |
| 892 | uuid[0] = x1; |
| 893 | uuid[1] = x2; |
| 894 | uuid[2] = x3; |
| 895 | uuid[3] = x4; |
| 896 | |
| 897 | /* Determine if the Partition descriptors should be populated. */ |
| 898 | info_get_flags = SMC_GET_GP(handle, CTX_GPREG_X5); |
| 899 | count_only = (info_get_flags & FFA_PARTITION_INFO_GET_COUNT_FLAG_MASK); |
| 900 | |
| 901 | /* Handle the case where we don't need to populate the descriptors. */ |
| 902 | if (count_only) { |
| 903 | partition_count = partition_info_get_handler_count_only(uuid); |
| 904 | if (partition_count == 0) { |
| 905 | return spmc_ffa_error_return(handle, |
| 906 | FFA_ERROR_INVALID_PARAMETER); |
| 907 | } |
| 908 | } else { |
| 909 | struct ffa_partition_info_v1_1 partitions[MAX_SP_LP_PARTITIONS]; |
| 910 | |
| 911 | /* |
| 912 | * Handle the case where the partition descriptors are required, |
| 913 | * check we have the buffers available and populate the |
| 914 | * appropriate structure version. |
| 915 | */ |
| 916 | |
| 917 | /* Obtain the v1.1 format of the descriptors. */ |
| 918 | ret = partition_info_get_handler_v1_1(uuid, partitions, |
| 919 | MAX_SP_LP_PARTITIONS, |
| 920 | &partition_count); |
| 921 | |
| 922 | /* Check if an error occurred during discovery. */ |
| 923 | if (ret != 0) { |
| 924 | goto err; |
| 925 | } |
| 926 | |
| 927 | /* If we didn't find any matches the UUID is unknown. */ |
| 928 | if (partition_count == 0) { |
| 929 | ret = FFA_ERROR_INVALID_PARAMETER; |
| 930 | goto err; |
| 931 | } |
| 932 | |
| 933 | /* Obtain the partition mailbox RX/TX buffer pair descriptor. */ |
| 934 | mbox = spmc_get_mbox_desc(secure_origin); |
| 935 | |
| 936 | /* |
| 937 | * If the caller has not bothered registering its RX/TX pair |
| 938 | * then return an error code. |
| 939 | */ |
| 940 | spin_lock(&mbox->lock); |
| 941 | if (mbox->rx_buffer == NULL) { |
| 942 | ret = FFA_ERROR_BUSY; |
| 943 | goto err_unlock; |
| 944 | } |
| 945 | |
| 946 | /* Ensure the RX buffer is currently free. */ |
| 947 | if (mbox->state != MAILBOX_STATE_EMPTY) { |
| 948 | ret = FFA_ERROR_BUSY; |
| 949 | goto err_unlock; |
| 950 | } |
| 951 | |
| 952 | /* Zero the RX buffer before populating. */ |
| 953 | (void)memset(mbox->rx_buffer, 0, |
| 954 | mbox->rxtx_page_count * FFA_PAGE_SIZE); |
| 955 | |
| 956 | /* |
| 957 | * Depending on the FF-A version of the requesting partition |
| 958 | * we may need to convert to a v1.0 format otherwise we can copy |
| 959 | * directly. |
| 960 | */ |
| 961 | if (ffa_version == MAKE_FFA_VERSION(U(1), U(0))) { |
| 962 | ret = partition_info_populate_v1_0(partitions, |
| 963 | mbox, |
| 964 | partition_count); |
| 965 | if (ret != 0) { |
| 966 | goto err_unlock; |
| 967 | } |
| 968 | } else { |
| 969 | uint32_t buf_size = mbox->rxtx_page_count * |
| 970 | FFA_PAGE_SIZE; |
| 971 | |
| 972 | /* Ensure the descriptor will fit in the buffer. */ |
| 973 | size = sizeof(struct ffa_partition_info_v1_1); |
| 974 | if (partition_count * size > buf_size) { |
| 975 | ret = FFA_ERROR_NO_MEMORY; |
| 976 | goto err_unlock; |
| 977 | } |
| 978 | memcpy(mbox->rx_buffer, partitions, |
| 979 | partition_count * size); |
| 980 | } |
| 981 | |
| 982 | mbox->state = MAILBOX_STATE_FULL; |
| 983 | spin_unlock(&mbox->lock); |
| 984 | } |
| 985 | SMC_RET4(handle, FFA_SUCCESS_SMC32, 0, partition_count, size); |
| 986 | |
| 987 | err_unlock: |
| 988 | spin_unlock(&mbox->lock); |
| 989 | err: |
| 990 | return spmc_ffa_error_return(handle, ret); |
| 991 | } |
| 992 | |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 993 | static uint64_t ffa_features_handler(uint32_t smc_fid, |
| 994 | bool secure_origin, |
| 995 | uint64_t x1, |
| 996 | uint64_t x2, |
| 997 | uint64_t x3, |
| 998 | uint64_t x4, |
| 999 | void *cookie, |
| 1000 | void *handle, |
| 1001 | uint64_t flags) |
| 1002 | { |
| 1003 | uint32_t function_id = (uint32_t) x1; |
| 1004 | uint32_t input_properties = (uint32_t) x2; |
| 1005 | |
| 1006 | /* |
| 1007 | * We don't currently support any additional input properties |
| 1008 | * for any ABI therefore ensure this value is always set to 0. |
| 1009 | */ |
| 1010 | if (input_properties != 0) { |
| 1011 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 1012 | } |
| 1013 | |
| 1014 | /* Check if a Feature ID was requested. */ |
| 1015 | if ((function_id & FFA_FEATURES_BIT31_MASK) == 0U) { |
| 1016 | /* We currently don't support any additional features. */ |
| 1017 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 1018 | } |
| 1019 | |
| 1020 | /* Report if an FF-A ABI is supported. */ |
| 1021 | switch (function_id) { |
| 1022 | /* Supported features from both worlds. */ |
| 1023 | case FFA_ERROR: |
| 1024 | case FFA_SUCCESS_SMC32: |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 1025 | case FFA_INTERRUPT: |
Marc Bonnici | 38add67 | 2021-11-25 15:54:52 +0000 | [diff] [blame] | 1026 | case FFA_SPM_ID_GET: |
Marc Bonnici | faa4a76 | 2021-11-24 15:40:00 +0000 | [diff] [blame] | 1027 | case FFA_ID_GET: |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1028 | case FFA_FEATURES: |
| 1029 | case FFA_VERSION: |
Marc Bonnici | cb17d31 | 2022-04-12 17:17:45 +0100 | [diff] [blame] | 1030 | case FFA_RX_RELEASE: |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1031 | case FFA_MSG_SEND_DIRECT_REQ_SMC32: |
| 1032 | case FFA_MSG_SEND_DIRECT_REQ_SMC64: |
| 1033 | case FFA_PARTITION_INFO_GET: |
| 1034 | case FFA_RXTX_MAP_SMC32: |
| 1035 | case FFA_RXTX_MAP_SMC64: |
| 1036 | case FFA_RXTX_UNMAP: |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1037 | case FFA_MEM_FRAG_TX: |
Marc Bonnici | 764e667 | 2021-08-31 17:57:04 +0100 | [diff] [blame] | 1038 | case FFA_MSG_RUN: |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1039 | |
| 1040 | /* |
| 1041 | * We are relying on the fact that the other registers |
| 1042 | * will be set to 0 as these values align with the |
| 1043 | * currently implemented features of the SPMC. If this |
| 1044 | * changes this function must be extended to handle |
| 1045 | * reporting the additional functionality. |
| 1046 | */ |
| 1047 | |
| 1048 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 1049 | /* Execution stops here. */ |
| 1050 | |
| 1051 | /* Supported ABIs only from the secure world. */ |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1052 | case FFA_SECONDARY_EP_REGISTER_SMC64: |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1053 | case FFA_MSG_SEND_DIRECT_RESP_SMC32: |
| 1054 | case FFA_MSG_SEND_DIRECT_RESP_SMC64: |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1055 | case FFA_MEM_RETRIEVE_REQ_SMC32: |
| 1056 | case FFA_MEM_RETRIEVE_REQ_SMC64: |
| 1057 | case FFA_MEM_RELINQUISH: |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1058 | case FFA_MSG_WAIT: |
| 1059 | |
| 1060 | if (!secure_origin) { |
| 1061 | return spmc_ffa_error_return(handle, |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1062 | FFA_ERROR_NOT_SUPPORTED); |
| 1063 | } |
| 1064 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 1065 | /* Execution stops here. */ |
| 1066 | |
| 1067 | /* Supported features only from the normal world. */ |
| 1068 | case FFA_MEM_SHARE_SMC32: |
| 1069 | case FFA_MEM_SHARE_SMC64: |
| 1070 | case FFA_MEM_LEND_SMC32: |
| 1071 | case FFA_MEM_LEND_SMC64: |
| 1072 | case FFA_MEM_RECLAIM: |
| 1073 | case FFA_MEM_FRAG_RX: |
| 1074 | |
| 1075 | if (secure_origin) { |
| 1076 | return spmc_ffa_error_return(handle, |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1077 | FFA_ERROR_NOT_SUPPORTED); |
| 1078 | } |
| 1079 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 1080 | /* Execution stops here. */ |
| 1081 | |
| 1082 | default: |
| 1083 | return spmc_ffa_error_return(handle, |
| 1084 | FFA_ERROR_NOT_SUPPORTED); |
| 1085 | } |
| 1086 | } |
| 1087 | |
Marc Bonnici | faa4a76 | 2021-11-24 15:40:00 +0000 | [diff] [blame] | 1088 | static uint64_t ffa_id_get_handler(uint32_t smc_fid, |
| 1089 | bool secure_origin, |
| 1090 | uint64_t x1, |
| 1091 | uint64_t x2, |
| 1092 | uint64_t x3, |
| 1093 | uint64_t x4, |
| 1094 | void *cookie, |
| 1095 | void *handle, |
| 1096 | uint64_t flags) |
| 1097 | { |
| 1098 | if (secure_origin) { |
| 1099 | SMC_RET3(handle, FFA_SUCCESS_SMC32, 0x0, |
| 1100 | spmc_get_current_sp_ctx()->sp_id); |
| 1101 | } else { |
| 1102 | SMC_RET3(handle, FFA_SUCCESS_SMC32, 0x0, |
| 1103 | spmc_get_hyp_ctx()->ns_ep_id); |
| 1104 | } |
| 1105 | } |
| 1106 | |
Marc Bonnici | 38add67 | 2021-11-25 15:54:52 +0000 | [diff] [blame] | 1107 | /* |
| 1108 | * Enable an SP to query the ID assigned to the SPMC. |
| 1109 | */ |
| 1110 | static uint64_t ffa_spm_id_get_handler(uint32_t smc_fid, |
| 1111 | bool secure_origin, |
| 1112 | uint64_t x1, |
| 1113 | uint64_t x2, |
| 1114 | uint64_t x3, |
| 1115 | uint64_t x4, |
| 1116 | void *cookie, |
| 1117 | void *handle, |
| 1118 | uint64_t flags) |
| 1119 | { |
| 1120 | assert(x1 == 0UL); |
| 1121 | assert(x2 == 0UL); |
| 1122 | assert(x3 == 0UL); |
| 1123 | assert(x4 == 0UL); |
| 1124 | assert(SMC_GET_GP(handle, CTX_GPREG_X5) == 0UL); |
| 1125 | assert(SMC_GET_GP(handle, CTX_GPREG_X6) == 0UL); |
| 1126 | assert(SMC_GET_GP(handle, CTX_GPREG_X7) == 0UL); |
| 1127 | |
| 1128 | SMC_RET3(handle, FFA_SUCCESS_SMC32, 0x0, FFA_SPMC_ID); |
| 1129 | } |
| 1130 | |
Marc Bonnici | 764e667 | 2021-08-31 17:57:04 +0100 | [diff] [blame] | 1131 | static uint64_t ffa_run_handler(uint32_t smc_fid, |
| 1132 | bool secure_origin, |
| 1133 | uint64_t x1, |
| 1134 | uint64_t x2, |
| 1135 | uint64_t x3, |
| 1136 | uint64_t x4, |
| 1137 | void *cookie, |
| 1138 | void *handle, |
| 1139 | uint64_t flags) |
| 1140 | { |
| 1141 | struct secure_partition_desc *sp; |
| 1142 | uint16_t target_id = FFA_RUN_EP_ID(x1); |
| 1143 | uint16_t vcpu_id = FFA_RUN_VCPU_ID(x1); |
| 1144 | unsigned int idx; |
| 1145 | unsigned int *rt_state; |
| 1146 | unsigned int *rt_model; |
| 1147 | |
| 1148 | /* Can only be called from the normal world. */ |
| 1149 | if (secure_origin) { |
| 1150 | ERROR("FFA_RUN can only be called from NWd.\n"); |
| 1151 | return spmc_ffa_error_return(handle, |
| 1152 | FFA_ERROR_INVALID_PARAMETER); |
| 1153 | } |
| 1154 | |
| 1155 | /* Cannot run a Normal world partition. */ |
| 1156 | if (ffa_is_normal_world_id(target_id)) { |
| 1157 | ERROR("Cannot run a NWd partition (0x%x).\n", target_id); |
| 1158 | return spmc_ffa_error_return(handle, |
| 1159 | FFA_ERROR_INVALID_PARAMETER); |
| 1160 | } |
| 1161 | |
| 1162 | /* Check that the target SP exists. */ |
| 1163 | sp = spmc_get_sp_ctx(target_id); |
| 1164 | ERROR("Unknown partition ID (0x%x).\n", target_id); |
| 1165 | if (sp == NULL) { |
| 1166 | return spmc_ffa_error_return(handle, |
| 1167 | FFA_ERROR_INVALID_PARAMETER); |
| 1168 | } |
| 1169 | |
| 1170 | idx = get_ec_index(sp); |
| 1171 | if (idx != vcpu_id) { |
| 1172 | ERROR("Cannot run vcpu %d != %d.\n", idx, vcpu_id); |
| 1173 | return spmc_ffa_error_return(handle, |
| 1174 | FFA_ERROR_INVALID_PARAMETER); |
| 1175 | } |
| 1176 | rt_state = &((sp->ec[idx]).rt_state); |
| 1177 | rt_model = &((sp->ec[idx]).rt_model); |
| 1178 | if (*rt_state == RT_STATE_RUNNING) { |
| 1179 | ERROR("Partition (0x%x) is already running.\n", target_id); |
| 1180 | return spmc_ffa_error_return(handle, FFA_ERROR_BUSY); |
| 1181 | } |
| 1182 | |
| 1183 | /* |
| 1184 | * Sanity check that if the execution context was not waiting then it |
| 1185 | * was either in the direct request or the run partition runtime model. |
| 1186 | */ |
| 1187 | if (*rt_state == RT_STATE_PREEMPTED || *rt_state == RT_STATE_BLOCKED) { |
| 1188 | assert(*rt_model == RT_MODEL_RUN || |
| 1189 | *rt_model == RT_MODEL_DIR_REQ); |
| 1190 | } |
| 1191 | |
| 1192 | /* |
| 1193 | * If the context was waiting then update the partition runtime model. |
| 1194 | */ |
| 1195 | if (*rt_state == RT_STATE_WAITING) { |
| 1196 | *rt_model = RT_MODEL_RUN; |
| 1197 | } |
| 1198 | |
| 1199 | /* |
| 1200 | * Forward the request to the correct SP vCPU after updating |
| 1201 | * its state. |
| 1202 | */ |
| 1203 | *rt_state = RT_STATE_RUNNING; |
| 1204 | |
| 1205 | return spmc_smc_return(smc_fid, secure_origin, x1, 0, 0, 0, |
| 1206 | handle, cookie, flags, target_id); |
| 1207 | } |
| 1208 | |
Marc Bonnici | cb17d31 | 2022-04-12 17:17:45 +0100 | [diff] [blame] | 1209 | static uint64_t rx_release_handler(uint32_t smc_fid, |
| 1210 | bool secure_origin, |
| 1211 | uint64_t x1, |
| 1212 | uint64_t x2, |
| 1213 | uint64_t x3, |
| 1214 | uint64_t x4, |
| 1215 | void *cookie, |
| 1216 | void *handle, |
| 1217 | uint64_t flags) |
| 1218 | { |
| 1219 | struct mailbox *mbox = spmc_get_mbox_desc(secure_origin); |
| 1220 | |
| 1221 | spin_lock(&mbox->lock); |
| 1222 | |
| 1223 | if (mbox->state != MAILBOX_STATE_FULL) { |
| 1224 | spin_unlock(&mbox->lock); |
| 1225 | return spmc_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 1226 | } |
| 1227 | |
| 1228 | mbox->state = MAILBOX_STATE_EMPTY; |
| 1229 | spin_unlock(&mbox->lock); |
| 1230 | |
| 1231 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 1232 | } |
| 1233 | |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1234 | /* |
| 1235 | * Perform initial validation on the provided secondary entry point. |
| 1236 | * For now ensure it does not lie within the BL31 Image or the SP's |
| 1237 | * RX/TX buffers as these are mapped within EL3. |
| 1238 | * TODO: perform validation for additional invalid memory regions. |
| 1239 | */ |
| 1240 | static int validate_secondary_ep(uintptr_t ep, struct secure_partition_desc *sp) |
| 1241 | { |
| 1242 | struct mailbox *mb; |
| 1243 | uintptr_t buffer_size; |
| 1244 | uintptr_t sp_rx_buffer; |
| 1245 | uintptr_t sp_tx_buffer; |
| 1246 | uintptr_t sp_rx_buffer_limit; |
| 1247 | uintptr_t sp_tx_buffer_limit; |
| 1248 | |
| 1249 | mb = &sp->mailbox; |
| 1250 | buffer_size = (uintptr_t) (mb->rxtx_page_count * FFA_PAGE_SIZE); |
| 1251 | sp_rx_buffer = (uintptr_t) mb->rx_buffer; |
| 1252 | sp_tx_buffer = (uintptr_t) mb->tx_buffer; |
| 1253 | sp_rx_buffer_limit = sp_rx_buffer + buffer_size; |
| 1254 | sp_tx_buffer_limit = sp_tx_buffer + buffer_size; |
| 1255 | |
| 1256 | /* |
| 1257 | * Check if the entry point lies within BL31, or the |
| 1258 | * SP's RX or TX buffer. |
| 1259 | */ |
| 1260 | if ((ep >= BL31_BASE && ep < BL31_LIMIT) || |
| 1261 | (ep >= sp_rx_buffer && ep < sp_rx_buffer_limit) || |
| 1262 | (ep >= sp_tx_buffer && ep < sp_tx_buffer_limit)) { |
| 1263 | return -EINVAL; |
| 1264 | } |
| 1265 | return 0; |
| 1266 | } |
| 1267 | |
Marc Bonnici | 73fbe8f | 2021-12-09 11:32:30 +0000 | [diff] [blame] | 1268 | /******************************************************************************* |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1269 | * This function handles the FFA_SECONDARY_EP_REGISTER SMC to allow an SP to |
| 1270 | * register an entry point for initialization during a secondary cold boot. |
| 1271 | ******************************************************************************/ |
| 1272 | static uint64_t ffa_sec_ep_register_handler(uint32_t smc_fid, |
| 1273 | bool secure_origin, |
| 1274 | uint64_t x1, |
| 1275 | uint64_t x2, |
| 1276 | uint64_t x3, |
| 1277 | uint64_t x4, |
| 1278 | void *cookie, |
| 1279 | void *handle, |
| 1280 | uint64_t flags) |
| 1281 | { |
| 1282 | struct secure_partition_desc *sp; |
| 1283 | struct sp_exec_ctx *sp_ctx; |
| 1284 | |
| 1285 | /* This request cannot originate from the Normal world. */ |
| 1286 | if (!secure_origin) { |
| 1287 | WARN("%s: Can only be called from SWd.\n", __func__); |
| 1288 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 1289 | } |
| 1290 | |
| 1291 | /* Get the context of the current SP. */ |
| 1292 | sp = spmc_get_current_sp_ctx(); |
| 1293 | if (sp == NULL) { |
| 1294 | WARN("%s: Cannot find SP context.\n", __func__); |
| 1295 | return spmc_ffa_error_return(handle, |
| 1296 | FFA_ERROR_INVALID_PARAMETER); |
| 1297 | } |
| 1298 | |
| 1299 | /* Only an S-EL1 SP should be invoking this ABI. */ |
| 1300 | if (sp->runtime_el != S_EL1) { |
| 1301 | WARN("%s: Can only be called for a S-EL1 SP.\n", __func__); |
| 1302 | return spmc_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 1303 | } |
| 1304 | |
| 1305 | /* Ensure the SP is in its initialization state. */ |
| 1306 | sp_ctx = spmc_get_sp_ec(sp); |
| 1307 | if (sp_ctx->rt_model != RT_MODEL_INIT) { |
| 1308 | WARN("%s: Can only be called during SP initialization.\n", |
| 1309 | __func__); |
| 1310 | return spmc_ffa_error_return(handle, FFA_ERROR_DENIED); |
| 1311 | } |
| 1312 | |
| 1313 | /* Perform initial validation of the secondary entry point. */ |
| 1314 | if (validate_secondary_ep(x1, sp)) { |
| 1315 | WARN("%s: Invalid entry point provided (0x%lx).\n", |
| 1316 | __func__, x1); |
| 1317 | return spmc_ffa_error_return(handle, |
| 1318 | FFA_ERROR_INVALID_PARAMETER); |
| 1319 | } |
| 1320 | |
| 1321 | /* |
| 1322 | * Update the secondary entrypoint in SP context. |
| 1323 | * We don't need a lock here as during partition initialization there |
| 1324 | * will only be a single core online. |
| 1325 | */ |
| 1326 | sp->secondary_ep = x1; |
| 1327 | VERBOSE("%s: 0x%lx\n", __func__, sp->secondary_ep); |
| 1328 | |
| 1329 | SMC_RET1(handle, FFA_SUCCESS_SMC32); |
| 1330 | } |
| 1331 | |
| 1332 | /******************************************************************************* |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1333 | * This function will parse the Secure Partition Manifest. From manifest, it |
| 1334 | * will fetch details for preparing Secure partition image context and secure |
| 1335 | * partition image boot arguments if any. |
| 1336 | ******************************************************************************/ |
| 1337 | static int sp_manifest_parse(void *sp_manifest, int offset, |
| 1338 | struct secure_partition_desc *sp, |
Achin Gupta | eaf1716 | 2021-10-19 12:21:16 +0100 | [diff] [blame] | 1339 | entry_point_info_t *ep_info, |
| 1340 | int32_t *boot_info_reg) |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1341 | { |
| 1342 | int32_t ret, node; |
| 1343 | uint32_t config_32; |
| 1344 | |
| 1345 | /* |
| 1346 | * Look for the mandatory fields that are expected to be present in |
| 1347 | * the SP manifests. |
| 1348 | */ |
| 1349 | node = fdt_path_offset(sp_manifest, "/"); |
| 1350 | if (node < 0) { |
| 1351 | ERROR("Did not find root node.\n"); |
| 1352 | return node; |
| 1353 | } |
| 1354 | |
Marc Bonnici | 21e644d | 2021-08-24 11:31:52 +0100 | [diff] [blame] | 1355 | ret = fdt_read_uint32_array(sp_manifest, node, "uuid", |
| 1356 | ARRAY_SIZE(sp->uuid), sp->uuid); |
| 1357 | if (ret != 0) { |
| 1358 | ERROR("Missing Secure Partition UUID.\n"); |
| 1359 | return ret; |
| 1360 | } |
| 1361 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1362 | ret = fdt_read_uint32(sp_manifest, node, "exception-level", &config_32); |
| 1363 | if (ret != 0) { |
| 1364 | ERROR("Missing SP Exception Level information.\n"); |
| 1365 | return ret; |
| 1366 | } |
| 1367 | |
| 1368 | sp->runtime_el = config_32; |
| 1369 | |
| 1370 | ret = fdt_read_uint32(sp_manifest, node, "ffa-version", &config_32); |
| 1371 | if (ret != 0) { |
| 1372 | ERROR("Missing Secure Partition FF-A Version.\n"); |
| 1373 | return ret; |
| 1374 | } |
| 1375 | |
| 1376 | sp->ffa_version = config_32; |
| 1377 | |
| 1378 | ret = fdt_read_uint32(sp_manifest, node, "execution-state", &config_32); |
| 1379 | if (ret != 0) { |
| 1380 | ERROR("Missing Secure Partition Execution State.\n"); |
| 1381 | return ret; |
| 1382 | } |
| 1383 | |
| 1384 | sp->execution_state = config_32; |
| 1385 | |
Marc Bonnici | eec0d04 | 2021-12-09 10:51:05 +0000 | [diff] [blame] | 1386 | ret = fdt_read_uint32(sp_manifest, node, |
Marc Bonnici | f524489 | 2021-12-09 18:34:02 +0000 | [diff] [blame] | 1387 | "messaging-method", &config_32); |
| 1388 | if (ret != 0) { |
| 1389 | ERROR("Missing Secure Partition messaging method.\n"); |
| 1390 | return ret; |
| 1391 | } |
| 1392 | |
| 1393 | /* Validate this entry, we currently only support direct messaging. */ |
| 1394 | if ((config_32 & ~(FFA_PARTITION_DIRECT_REQ_RECV | |
| 1395 | FFA_PARTITION_DIRECT_REQ_SEND)) != 0U) { |
| 1396 | WARN("Invalid Secure Partition messaging method (0x%x)\n", |
| 1397 | config_32); |
| 1398 | return -EINVAL; |
| 1399 | } |
| 1400 | |
| 1401 | sp->properties = config_32; |
| 1402 | |
| 1403 | ret = fdt_read_uint32(sp_manifest, node, |
Marc Bonnici | eec0d04 | 2021-12-09 10:51:05 +0000 | [diff] [blame] | 1404 | "execution-ctx-count", &config_32); |
| 1405 | |
| 1406 | if (ret != 0) { |
| 1407 | ERROR("Missing SP Execution Context Count.\n"); |
| 1408 | return ret; |
| 1409 | } |
| 1410 | |
| 1411 | /* |
| 1412 | * Ensure this field is set correctly in the manifest however |
| 1413 | * since this is currently a hardcoded value for S-EL1 partitions |
| 1414 | * we don't need to save it here, just validate. |
| 1415 | */ |
| 1416 | if (config_32 != PLATFORM_CORE_COUNT) { |
| 1417 | ERROR("SP Execution Context Count (%u) must be %u.\n", |
| 1418 | config_32, PLATFORM_CORE_COUNT); |
| 1419 | return -EINVAL; |
| 1420 | } |
| 1421 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1422 | /* |
| 1423 | * Look for the optional fields that are expected to be present in |
| 1424 | * an SP manifest. |
| 1425 | */ |
| 1426 | ret = fdt_read_uint32(sp_manifest, node, "id", &config_32); |
| 1427 | if (ret != 0) { |
| 1428 | WARN("Missing Secure Partition ID.\n"); |
| 1429 | } else { |
| 1430 | if (!is_ffa_secure_id_valid(config_32)) { |
| 1431 | ERROR("Invalid Secure Partition ID (0x%x).\n", |
| 1432 | config_32); |
| 1433 | return -EINVAL; |
| 1434 | } |
| 1435 | sp->sp_id = config_32; |
| 1436 | } |
| 1437 | |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1438 | ret = fdt_read_uint32(sp_manifest, node, |
| 1439 | "power-management-messages", &config_32); |
| 1440 | if (ret != 0) { |
| 1441 | WARN("Missing Power Management Messages entry.\n"); |
| 1442 | } else { |
| 1443 | /* |
| 1444 | * Ensure only the currently supported power messages have |
| 1445 | * been requested. |
| 1446 | */ |
| 1447 | if (config_32 & ~(FFA_PM_MSG_SUB_CPU_OFF | |
| 1448 | FFA_PM_MSG_SUB_CPU_SUSPEND | |
| 1449 | FFA_PM_MSG_SUB_CPU_SUSPEND_RESUME)) { |
| 1450 | ERROR("Requested unsupported PM messages (%x)\n", |
| 1451 | config_32); |
| 1452 | return -EINVAL; |
| 1453 | } |
| 1454 | sp->pwr_mgmt_msgs = config_32; |
| 1455 | } |
| 1456 | |
Achin Gupta | eaf1716 | 2021-10-19 12:21:16 +0100 | [diff] [blame] | 1457 | ret = fdt_read_uint32(sp_manifest, node, |
| 1458 | "gp-register-num", &config_32); |
| 1459 | if (ret != 0) { |
| 1460 | WARN("Missing boot information register.\n"); |
| 1461 | } else { |
| 1462 | /* Check if a register number between 0-3 is specified. */ |
| 1463 | if (config_32 < 4) { |
| 1464 | *boot_info_reg = config_32; |
| 1465 | } else { |
| 1466 | WARN("Incorrect boot information register (%u).\n", |
| 1467 | config_32); |
| 1468 | } |
| 1469 | } |
| 1470 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1471 | return 0; |
| 1472 | } |
| 1473 | |
| 1474 | /******************************************************************************* |
| 1475 | * This function gets the Secure Partition Manifest base and maps the manifest |
| 1476 | * region. |
| 1477 | * Currently only one Secure Partition manifest is considered which is used to |
| 1478 | * prepare the context for the single Secure Partition. |
| 1479 | ******************************************************************************/ |
| 1480 | static int find_and_prepare_sp_context(void) |
| 1481 | { |
| 1482 | void *sp_manifest; |
| 1483 | uintptr_t manifest_base; |
| 1484 | uintptr_t manifest_base_align; |
| 1485 | entry_point_info_t *next_image_ep_info; |
Achin Gupta | eaf1716 | 2021-10-19 12:21:16 +0100 | [diff] [blame] | 1486 | int32_t ret, boot_info_reg = -1; |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1487 | struct secure_partition_desc *sp; |
| 1488 | |
| 1489 | next_image_ep_info = bl31_plat_get_next_image_ep_info(SECURE); |
| 1490 | if (next_image_ep_info == NULL) { |
| 1491 | WARN("No Secure Partition image provided by BL2.\n"); |
| 1492 | return -ENOENT; |
| 1493 | } |
| 1494 | |
| 1495 | sp_manifest = (void *)next_image_ep_info->args.arg0; |
| 1496 | if (sp_manifest == NULL) { |
| 1497 | WARN("Secure Partition manifest absent.\n"); |
| 1498 | return -ENOENT; |
| 1499 | } |
| 1500 | |
| 1501 | manifest_base = (uintptr_t)sp_manifest; |
| 1502 | manifest_base_align = page_align(manifest_base, DOWN); |
| 1503 | |
| 1504 | /* |
| 1505 | * Map the secure partition manifest region in the EL3 translation |
| 1506 | * regime. |
| 1507 | * Map an area equal to (2 * PAGE_SIZE) for now. During manifest base |
| 1508 | * alignment the region of 1 PAGE_SIZE from manifest align base may |
| 1509 | * not completely accommodate the secure partition manifest region. |
| 1510 | */ |
| 1511 | ret = mmap_add_dynamic_region((unsigned long long)manifest_base_align, |
| 1512 | manifest_base_align, |
| 1513 | PAGE_SIZE * 2, |
| 1514 | MT_RO_DATA); |
| 1515 | if (ret != 0) { |
| 1516 | ERROR("Error while mapping SP manifest (%d).\n", ret); |
| 1517 | return ret; |
| 1518 | } |
| 1519 | |
| 1520 | ret = fdt_node_offset_by_compatible(sp_manifest, -1, |
| 1521 | "arm,ffa-manifest-1.0"); |
| 1522 | if (ret < 0) { |
| 1523 | ERROR("Error happened in SP manifest reading.\n"); |
| 1524 | return -EINVAL; |
| 1525 | } |
| 1526 | |
| 1527 | /* |
| 1528 | * Store the size of the manifest so that it can be used later to pass |
| 1529 | * the manifest as boot information later. |
| 1530 | */ |
| 1531 | next_image_ep_info->args.arg1 = fdt_totalsize(sp_manifest); |
| 1532 | INFO("Manifest size = %lu bytes.\n", next_image_ep_info->args.arg1); |
| 1533 | |
| 1534 | /* |
| 1535 | * Select an SP descriptor for initialising the partition's execution |
| 1536 | * context on the primary CPU. |
| 1537 | */ |
| 1538 | sp = spmc_get_current_sp_ctx(); |
| 1539 | |
| 1540 | /* Initialize entry point information for the SP */ |
| 1541 | SET_PARAM_HEAD(next_image_ep_info, PARAM_EP, VERSION_1, |
| 1542 | SECURE | EP_ST_ENABLE); |
| 1543 | |
| 1544 | /* Parse the SP manifest. */ |
Achin Gupta | eaf1716 | 2021-10-19 12:21:16 +0100 | [diff] [blame] | 1545 | ret = sp_manifest_parse(sp_manifest, ret, sp, next_image_ep_info, |
| 1546 | &boot_info_reg); |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1547 | if (ret != 0) { |
| 1548 | ERROR("Error in Secure Partition manifest parsing.\n"); |
| 1549 | return ret; |
| 1550 | } |
| 1551 | |
| 1552 | /* Check that the runtime EL in the manifest was correct. */ |
| 1553 | if (sp->runtime_el != S_EL1) { |
| 1554 | ERROR("Unexpected runtime EL: %d\n", sp->runtime_el); |
| 1555 | return -EINVAL; |
| 1556 | } |
| 1557 | |
| 1558 | /* Perform any common initialisation. */ |
Achin Gupta | eaf1716 | 2021-10-19 12:21:16 +0100 | [diff] [blame] | 1559 | spmc_sp_common_setup(sp, next_image_ep_info, boot_info_reg); |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1560 | |
| 1561 | /* Perform any initialisation specific to S-EL1 SPs. */ |
| 1562 | spmc_el1_sp_setup(sp, next_image_ep_info); |
| 1563 | |
| 1564 | /* Initialize the SP context with the required ep info. */ |
| 1565 | spmc_sp_common_ep_commit(sp, next_image_ep_info); |
| 1566 | |
| 1567 | return 0; |
| 1568 | } |
| 1569 | |
| 1570 | /******************************************************************************* |
| 1571 | * This function takes an SP context pointer and performs a synchronous entry |
| 1572 | * into it. |
| 1573 | ******************************************************************************/ |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 1574 | static int32_t logical_sp_init(void) |
| 1575 | { |
| 1576 | int32_t rc = 0; |
| 1577 | struct el3_lp_desc *el3_lp_descs; |
| 1578 | |
| 1579 | /* Perform initial validation of the Logical Partitions. */ |
| 1580 | rc = el3_sp_desc_validate(); |
| 1581 | if (rc != 0) { |
| 1582 | ERROR("Logical Partition validation failed!\n"); |
| 1583 | return rc; |
| 1584 | } |
| 1585 | |
| 1586 | el3_lp_descs = get_el3_lp_array(); |
| 1587 | |
| 1588 | INFO("Logical Secure Partition init start.\n"); |
| 1589 | for (unsigned int i = 0U; i < EL3_LP_DESCS_COUNT; i++) { |
| 1590 | rc = el3_lp_descs[i].init(); |
| 1591 | if (rc != 0) { |
| 1592 | ERROR("Logical SP (0x%x) Failed to Initialize\n", |
| 1593 | el3_lp_descs[i].sp_id); |
| 1594 | return rc; |
| 1595 | } |
| 1596 | VERBOSE("Logical SP (0x%x) Initialized\n", |
| 1597 | el3_lp_descs[i].sp_id); |
| 1598 | } |
| 1599 | |
| 1600 | INFO("Logical Secure Partition init completed.\n"); |
| 1601 | |
| 1602 | return rc; |
| 1603 | } |
| 1604 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1605 | uint64_t spmc_sp_synchronous_entry(struct sp_exec_ctx *ec) |
| 1606 | { |
| 1607 | uint64_t rc; |
| 1608 | |
| 1609 | assert(ec != NULL); |
| 1610 | |
| 1611 | /* Assign the context of the SP to this CPU */ |
| 1612 | cm_set_context(&(ec->cpu_ctx), SECURE); |
| 1613 | |
| 1614 | /* Restore the context assigned above */ |
| 1615 | cm_el1_sysregs_context_restore(SECURE); |
| 1616 | cm_set_next_eret_context(SECURE); |
| 1617 | |
| 1618 | /* Invalidate TLBs at EL1. */ |
| 1619 | tlbivmalle1(); |
| 1620 | dsbish(); |
| 1621 | |
| 1622 | /* Enter Secure Partition */ |
| 1623 | rc = spm_secure_partition_enter(&ec->c_rt_ctx); |
| 1624 | |
| 1625 | /* Save secure state */ |
| 1626 | cm_el1_sysregs_context_save(SECURE); |
| 1627 | |
| 1628 | return rc; |
| 1629 | } |
| 1630 | |
| 1631 | /******************************************************************************* |
| 1632 | * SPMC Helper Functions. |
| 1633 | ******************************************************************************/ |
| 1634 | static int32_t sp_init(void) |
| 1635 | { |
| 1636 | uint64_t rc; |
| 1637 | struct secure_partition_desc *sp; |
| 1638 | struct sp_exec_ctx *ec; |
| 1639 | |
| 1640 | sp = spmc_get_current_sp_ctx(); |
| 1641 | ec = spmc_get_sp_ec(sp); |
| 1642 | ec->rt_model = RT_MODEL_INIT; |
| 1643 | ec->rt_state = RT_STATE_RUNNING; |
| 1644 | |
| 1645 | INFO("Secure Partition (0x%x) init start.\n", sp->sp_id); |
| 1646 | |
| 1647 | rc = spmc_sp_synchronous_entry(ec); |
| 1648 | if (rc != 0) { |
| 1649 | /* Indicate SP init was not successful. */ |
| 1650 | ERROR("SP (0x%x) failed to initialize (%lu).\n", |
| 1651 | sp->sp_id, rc); |
| 1652 | return 0; |
| 1653 | } |
| 1654 | |
| 1655 | ec->rt_state = RT_STATE_WAITING; |
| 1656 | INFO("Secure Partition initialized.\n"); |
| 1657 | |
| 1658 | return 1; |
| 1659 | } |
| 1660 | |
| 1661 | static void initalize_sp_descs(void) |
| 1662 | { |
| 1663 | struct secure_partition_desc *sp; |
| 1664 | |
| 1665 | for (unsigned int i = 0U; i < SECURE_PARTITION_COUNT; i++) { |
| 1666 | sp = &sp_desc[i]; |
| 1667 | sp->sp_id = INV_SP_ID; |
Marc Bonnici | ecc460a | 2021-09-02 13:18:41 +0100 | [diff] [blame] | 1668 | sp->mailbox.rx_buffer = NULL; |
| 1669 | sp->mailbox.tx_buffer = NULL; |
| 1670 | sp->mailbox.state = MAILBOX_STATE_EMPTY; |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1671 | sp->secondary_ep = 0; |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | static void initalize_ns_ep_descs(void) |
| 1676 | { |
| 1677 | struct ns_endpoint_desc *ns_ep; |
| 1678 | |
| 1679 | for (unsigned int i = 0U; i < NS_PARTITION_COUNT; i++) { |
| 1680 | ns_ep = &ns_ep_desc[i]; |
| 1681 | /* |
| 1682 | * Clashes with the Hypervisor ID but will not be a |
| 1683 | * problem in practice. |
| 1684 | */ |
| 1685 | ns_ep->ns_ep_id = 0; |
| 1686 | ns_ep->ffa_version = 0; |
Marc Bonnici | ecc460a | 2021-09-02 13:18:41 +0100 | [diff] [blame] | 1687 | ns_ep->mailbox.rx_buffer = NULL; |
| 1688 | ns_ep->mailbox.tx_buffer = NULL; |
| 1689 | ns_ep->mailbox.state = MAILBOX_STATE_EMPTY; |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1690 | } |
| 1691 | } |
| 1692 | |
| 1693 | /******************************************************************************* |
Marc Bonnici | 1c33cc3 | 2021-11-29 17:57:03 +0000 | [diff] [blame] | 1694 | * Initialize SPMC attributes for the SPMD. |
| 1695 | ******************************************************************************/ |
| 1696 | void spmc_populate_attrs(spmc_manifest_attribute_t *spmc_attrs) |
| 1697 | { |
| 1698 | spmc_attrs->major_version = FFA_VERSION_MAJOR; |
| 1699 | spmc_attrs->minor_version = FFA_VERSION_MINOR; |
| 1700 | spmc_attrs->exec_state = MODE_RW_64; |
| 1701 | spmc_attrs->spmc_id = FFA_SPMC_ID; |
| 1702 | } |
| 1703 | |
| 1704 | /******************************************************************************* |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1705 | * Initialize contexts of all Secure Partitions. |
| 1706 | ******************************************************************************/ |
| 1707 | int32_t spmc_setup(void) |
| 1708 | { |
| 1709 | int32_t ret; |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 1710 | uint32_t flags; |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1711 | |
| 1712 | /* Initialize endpoint descriptors */ |
| 1713 | initalize_sp_descs(); |
| 1714 | initalize_ns_ep_descs(); |
| 1715 | |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1716 | /* |
| 1717 | * Retrieve the information of the datastore for tracking shared memory |
| 1718 | * requests allocated by platform code and zero the region if available. |
| 1719 | */ |
| 1720 | ret = plat_spmc_shmem_datastore_get(&spmc_shmem_obj_state.data, |
| 1721 | &spmc_shmem_obj_state.data_size); |
| 1722 | if (ret != 0) { |
| 1723 | ERROR("Failed to obtain memory descriptor backing store!\n"); |
| 1724 | return ret; |
| 1725 | } |
| 1726 | memset(spmc_shmem_obj_state.data, 0, spmc_shmem_obj_state.data_size); |
| 1727 | |
Marc Bonnici | 9a29704 | 2022-02-14 17:06:09 +0000 | [diff] [blame] | 1728 | /* Setup logical SPs. */ |
| 1729 | ret = logical_sp_init(); |
| 1730 | if (ret != 0) { |
| 1731 | ERROR("Failed to initialize Logical Partitions.\n"); |
| 1732 | return ret; |
| 1733 | } |
| 1734 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1735 | /* Perform physical SP setup. */ |
| 1736 | |
| 1737 | /* Disable MMU at EL1 (initialized by BL2) */ |
| 1738 | disable_mmu_icache_el1(); |
| 1739 | |
| 1740 | /* Initialize context of the SP */ |
| 1741 | INFO("Secure Partition context setup start.\n"); |
| 1742 | |
| 1743 | ret = find_and_prepare_sp_context(); |
| 1744 | if (ret != 0) { |
| 1745 | ERROR("Error in SP finding and context preparation.\n"); |
| 1746 | return ret; |
| 1747 | } |
| 1748 | |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1749 | /* Register power management hooks with PSCI */ |
| 1750 | psci_register_spd_pm_hook(&spmc_pm); |
| 1751 | |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 1752 | /* |
| 1753 | * Register an interrupt handler for S-EL1 interrupts |
| 1754 | * when generated during code executing in the |
| 1755 | * non-secure state. |
| 1756 | */ |
| 1757 | flags = 0; |
| 1758 | set_interrupt_rm_flag(flags, NON_SECURE); |
| 1759 | ret = register_interrupt_type_handler(INTR_TYPE_S_EL1, |
| 1760 | spmc_sp_interrupt_handler, |
| 1761 | flags); |
| 1762 | if (ret != 0) { |
| 1763 | ERROR("Failed to register interrupt handler! (%d)\n", ret); |
| 1764 | panic(); |
| 1765 | } |
| 1766 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1767 | /* Register init function for deferred init. */ |
| 1768 | bl31_register_bl32_init(&sp_init); |
| 1769 | |
| 1770 | INFO("Secure Partition setup done.\n"); |
| 1771 | |
| 1772 | return 0; |
| 1773 | } |
| 1774 | |
| 1775 | /******************************************************************************* |
| 1776 | * Secure Partition Manager SMC handler. |
| 1777 | ******************************************************************************/ |
| 1778 | uint64_t spmc_smc_handler(uint32_t smc_fid, |
| 1779 | bool secure_origin, |
| 1780 | uint64_t x1, |
| 1781 | uint64_t x2, |
| 1782 | uint64_t x3, |
| 1783 | uint64_t x4, |
| 1784 | void *cookie, |
| 1785 | void *handle, |
| 1786 | uint64_t flags) |
| 1787 | { |
| 1788 | switch (smc_fid) { |
| 1789 | |
Marc Bonnici | e95eb7c | 2021-12-08 14:24:03 +0000 | [diff] [blame] | 1790 | case FFA_VERSION: |
| 1791 | return ffa_version_handler(smc_fid, secure_origin, x1, x2, x3, |
| 1792 | x4, cookie, handle, flags); |
| 1793 | |
Marc Bonnici | 38add67 | 2021-11-25 15:54:52 +0000 | [diff] [blame] | 1794 | case FFA_SPM_ID_GET: |
| 1795 | return ffa_spm_id_get_handler(smc_fid, secure_origin, x1, x2, |
| 1796 | x3, x4, cookie, handle, flags); |
| 1797 | |
Marc Bonnici | faa4a76 | 2021-11-24 15:40:00 +0000 | [diff] [blame] | 1798 | case FFA_ID_GET: |
| 1799 | return ffa_id_get_handler(smc_fid, secure_origin, x1, x2, x3, |
| 1800 | x4, cookie, handle, flags); |
| 1801 | |
Marc Bonnici | d4bb245 | 2021-12-13 11:08:59 +0000 | [diff] [blame] | 1802 | case FFA_FEATURES: |
| 1803 | return ffa_features_handler(smc_fid, secure_origin, x1, x2, x3, |
| 1804 | x4, cookie, handle, flags); |
| 1805 | |
Marc Bonnici | 25f4b54 | 2022-04-12 17:18:13 +0100 | [diff] [blame] | 1806 | case FFA_SECONDARY_EP_REGISTER_SMC64: |
| 1807 | return ffa_sec_ep_register_handler(smc_fid, secure_origin, x1, |
| 1808 | x2, x3, x4, cookie, handle, |
| 1809 | flags); |
| 1810 | |
Marc Bonnici | 5eeacd5 | 2021-11-29 17:05:57 +0000 | [diff] [blame] | 1811 | case FFA_MSG_SEND_DIRECT_REQ_SMC32: |
| 1812 | case FFA_MSG_SEND_DIRECT_REQ_SMC64: |
| 1813 | return direct_req_smc_handler(smc_fid, secure_origin, x1, x2, |
| 1814 | x3, x4, cookie, handle, flags); |
| 1815 | |
| 1816 | case FFA_MSG_SEND_DIRECT_RESP_SMC32: |
| 1817 | case FFA_MSG_SEND_DIRECT_RESP_SMC64: |
| 1818 | return direct_resp_smc_handler(smc_fid, secure_origin, x1, x2, |
| 1819 | x3, x4, cookie, handle, flags); |
| 1820 | |
Marc Bonnici | 0cf1a15 | 2021-08-25 12:09:37 +0100 | [diff] [blame] | 1821 | case FFA_RXTX_MAP_SMC32: |
| 1822 | case FFA_RXTX_MAP_SMC64: |
| 1823 | return rxtx_map_handler(smc_fid, secure_origin, x1, x2, x3, x4, |
| 1824 | cookie, handle, flags); |
| 1825 | |
| 1826 | case FFA_RXTX_UNMAP: |
| 1827 | return rxtx_unmap_handler(smc_fid, secure_origin, x1, x2, x3, |
| 1828 | x4, cookie, handle, flags); |
| 1829 | |
Marc Bonnici | 37dd8e1 | 2021-08-17 18:00:07 +0100 | [diff] [blame] | 1830 | case FFA_PARTITION_INFO_GET: |
| 1831 | return partition_info_get_handler(smc_fid, secure_origin, x1, |
| 1832 | x2, x3, x4, cookie, handle, |
| 1833 | flags); |
| 1834 | |
Marc Bonnici | cb17d31 | 2022-04-12 17:17:45 +0100 | [diff] [blame] | 1835 | case FFA_RX_RELEASE: |
| 1836 | return rx_release_handler(smc_fid, secure_origin, x1, x2, x3, |
| 1837 | x4, cookie, handle, flags); |
| 1838 | |
Marc Bonnici | 8eb1520 | 2021-11-29 17:05:33 +0000 | [diff] [blame] | 1839 | case FFA_MSG_WAIT: |
| 1840 | return msg_wait_handler(smc_fid, secure_origin, x1, x2, x3, x4, |
| 1841 | cookie, handle, flags); |
| 1842 | |
Marc Bonnici | b4e9984 | 2021-12-10 09:21:56 +0000 | [diff] [blame] | 1843 | case FFA_ERROR: |
| 1844 | return ffa_error_handler(smc_fid, secure_origin, x1, x2, x3, x4, |
| 1845 | cookie, handle, flags); |
| 1846 | |
Marc Bonnici | 764e667 | 2021-08-31 17:57:04 +0100 | [diff] [blame] | 1847 | case FFA_MSG_RUN: |
| 1848 | return ffa_run_handler(smc_fid, secure_origin, x1, x2, x3, x4, |
| 1849 | cookie, handle, flags); |
Marc Bonnici | 9f23c8d | 2021-10-01 16:06:04 +0100 | [diff] [blame] | 1850 | |
| 1851 | case FFA_MEM_SHARE_SMC32: |
| 1852 | case FFA_MEM_SHARE_SMC64: |
| 1853 | case FFA_MEM_LEND_SMC32: |
| 1854 | case FFA_MEM_LEND_SMC64: |
| 1855 | return spmc_ffa_mem_send(smc_fid, secure_origin, x1, x2, x3, x4, |
| 1856 | cookie, handle, flags); |
| 1857 | |
| 1858 | case FFA_MEM_FRAG_TX: |
| 1859 | return spmc_ffa_mem_frag_tx(smc_fid, secure_origin, x1, x2, x3, |
| 1860 | x4, cookie, handle, flags); |
| 1861 | |
| 1862 | case FFA_MEM_FRAG_RX: |
| 1863 | return spmc_ffa_mem_frag_rx(smc_fid, secure_origin, x1, x2, x3, |
| 1864 | x4, cookie, handle, flags); |
| 1865 | |
| 1866 | case FFA_MEM_RETRIEVE_REQ_SMC32: |
| 1867 | case FFA_MEM_RETRIEVE_REQ_SMC64: |
| 1868 | return spmc_ffa_mem_retrieve_req(smc_fid, secure_origin, x1, x2, |
| 1869 | x3, x4, cookie, handle, flags); |
| 1870 | |
| 1871 | case FFA_MEM_RELINQUISH: |
| 1872 | return spmc_ffa_mem_relinquish(smc_fid, secure_origin, x1, x2, |
| 1873 | x3, x4, cookie, handle, flags); |
| 1874 | |
| 1875 | case FFA_MEM_RECLAIM: |
| 1876 | return spmc_ffa_mem_reclaim(smc_fid, secure_origin, x1, x2, x3, |
| 1877 | x4, cookie, handle, flags); |
| 1878 | |
Marc Bonnici | 8e1a755 | 2021-12-01 17:57:04 +0000 | [diff] [blame] | 1879 | default: |
| 1880 | WARN("Unsupported FF-A call 0x%08x.\n", smc_fid); |
| 1881 | break; |
| 1882 | } |
| 1883 | return spmc_ffa_error_return(handle, FFA_ERROR_NOT_SUPPORTED); |
| 1884 | } |
Achin Gupta | 2ec5dbe | 2021-10-04 20:17:45 +0100 | [diff] [blame] | 1885 | |
| 1886 | /******************************************************************************* |
| 1887 | * This function is the handler registered for S-EL1 interrupts by the SPMC. It |
| 1888 | * validates the interrupt and upon success arranges entry into the SP for |
| 1889 | * handling the interrupt. |
| 1890 | ******************************************************************************/ |
| 1891 | static uint64_t spmc_sp_interrupt_handler(uint32_t id, |
| 1892 | uint32_t flags, |
| 1893 | void *handle, |
| 1894 | void *cookie) |
| 1895 | { |
| 1896 | struct secure_partition_desc *sp = spmc_get_current_sp_ctx(); |
| 1897 | struct sp_exec_ctx *ec; |
| 1898 | uint32_t linear_id = plat_my_core_pos(); |
| 1899 | |
| 1900 | /* Sanity check for a NULL pointer dereference. */ |
| 1901 | assert(sp != NULL); |
| 1902 | |
| 1903 | /* Check the security state when the exception was generated. */ |
| 1904 | assert(get_interrupt_src_ss(flags) == NON_SECURE); |
| 1905 | |
| 1906 | /* Panic if not an S-EL1 Partition. */ |
| 1907 | if (sp->runtime_el != S_EL1) { |
| 1908 | ERROR("Interrupt received for a non S-EL1 SP on core%u.\n", |
| 1909 | linear_id); |
| 1910 | panic(); |
| 1911 | } |
| 1912 | |
| 1913 | /* Obtain a reference to the SP execution context. */ |
| 1914 | ec = spmc_get_sp_ec(sp); |
| 1915 | |
| 1916 | /* Ensure that the execution context is in waiting state else panic. */ |
| 1917 | if (ec->rt_state != RT_STATE_WAITING) { |
| 1918 | ERROR("SP EC on core%u is not waiting (%u), it is (%u).\n", |
| 1919 | linear_id, RT_STATE_WAITING, ec->rt_state); |
| 1920 | panic(); |
| 1921 | } |
| 1922 | |
| 1923 | /* Update the runtime model and state of the partition. */ |
| 1924 | ec->rt_model = RT_MODEL_INTR; |
| 1925 | ec->rt_state = RT_STATE_RUNNING; |
| 1926 | |
| 1927 | VERBOSE("SP (0x%x) interrupt start on core%u.\n", sp->sp_id, linear_id); |
| 1928 | |
| 1929 | /* |
| 1930 | * Forward the interrupt to the S-EL1 SP. The interrupt ID is not |
| 1931 | * populated as the SP can determine this by itself. |
| 1932 | */ |
| 1933 | return spmd_smc_switch_state(FFA_INTERRUPT, false, |
| 1934 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 1935 | FFA_PARAM_MBZ, FFA_PARAM_MBZ, |
| 1936 | handle); |
| 1937 | } |