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Andrew Scull18834872018-10-12 11:48:09 +01001/*
Andrew Walbran692b3252019-03-07 15:51:31 +00002 * Copyright 2018 The Hafnium Authors.
Andrew Scull18834872018-10-12 11:48:09 +01003 *
Andrew Walbrane959ec12020-06-17 15:01:09 +01004 * Use of this source code is governed by a BSD-style
5 * license that can be found in the LICENSE file or at
6 * https://opensource.org/licenses/BSD-3-Clause.
Andrew Scull18834872018-10-12 11:48:09 +01007 */
8
Andrew Scull18c78fc2018-08-20 12:57:41 +01009#include "hf/load.h"
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010010
11#include <stdbool.h>
12
Maksims Svecovs134b8f92022-03-04 15:14:09 +000013#include "hf/arch/init.h"
Olivier Deprez112d2b52020-09-30 07:39:23 +020014#include "hf/arch/other_world.h"
J-Alvesa9c7cba2021-08-25 16:26:11 +010015#include "hf/arch/plat/ffa.h"
Fuad Tabba77a4b012019-11-15 12:13:08 +000016#include "hf/arch/vm.h"
17
Andrew Scull18c78fc2018-08-20 12:57:41 +010018#include "hf/api.h"
Andrew Walbran34ce72e2018-09-13 16:47:44 +010019#include "hf/boot_params.h"
Andrew Scull72b43c02019-09-18 13:53:45 +010020#include "hf/check.h"
Andrew Scull18c78fc2018-08-20 12:57:41 +010021#include "hf/dlog.h"
Fuad Tabba50469e02020-06-30 15:14:28 +010022#include "hf/fdt_patch.h"
Andrew Scull5991ec92018-10-08 14:55:02 +010023#include "hf/layout.h"
J-Alves77b6f4f2023-03-15 11:34:49 +000024#include "hf/manifest.h"
Andrew Scull18c78fc2018-08-20 12:57:41 +010025#include "hf/memiter.h"
26#include "hf/mm.h"
Andrew Walbran48699362019-05-20 14:38:00 +010027#include "hf/plat/console.h"
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -050028#include "hf/plat/interrupts.h"
Andrew Scullb1a6d0d2020-01-29 11:25:12 +000029#include "hf/plat/iommu.h"
Andrew Scull877ae4b2019-07-02 12:52:33 +010030#include "hf/static_assert.h"
Andrew Scull8d9e1212019-04-05 13:52:55 +010031#include "hf/std.h"
Andrew Scull18c78fc2018-08-20 12:57:41 +010032#include "hf/vm.h"
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010033
Andrew Scull19503262018-09-20 14:48:39 +010034#include "vmapi/hf/call.h"
Manish Pandeyd34f8892020-06-19 17:41:07 +010035#include "vmapi/hf/ffa.h"
Andrew Scull19503262018-09-20 14:48:39 +010036
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010037/**
38 * Copies data to an unmapped location by mapping it for write, copying the
39 * data, then unmapping it.
Andrew Sculld9225b32018-11-19 16:12:41 +000040 *
41 * The data is written so that it is available to all cores with the cache
42 * disabled. When switching to the partitions, the caching is initially disabled
43 * so the data must be available without the cache.
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010044 */
Andrew Scull3c0a90a2019-07-01 11:55:53 +010045static bool copy_to_unmapped(struct mm_stage1_locked stage1_locked, paddr_t to,
David Brazdil7a462ec2019-08-15 12:27:47 +010046 struct memiter *from_it, struct mpool *ppool)
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010047{
David Brazdil7a462ec2019-08-15 12:27:47 +010048 const void *from = memiter_base(from_it);
49 size_t size = memiter_size(from_it);
Andrew Scull80871322018-08-06 12:04:09 +010050 paddr_t to_end = pa_add(to, size);
51 void *ptr;
Andrew Scull265ada92018-07-30 15:19:01 +010052
Andrew Scull3c0a90a2019-07-01 11:55:53 +010053 ptr = mm_identity_map(stage1_locked, to, to_end, MM_MODE_W, ppool);
Andrew Scull80871322018-08-06 12:04:09 +010054 if (!ptr) {
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010055 return false;
56 }
57
Andrew Sculla1aa2ba2019-04-05 11:49:02 +010058 memcpy_s(ptr, size, from, size);
Andrew Scullc059fbe2019-09-12 12:58:40 +010059 arch_mm_flush_dcache(ptr, size);
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010060
Andrew Scull72b43c02019-09-18 13:53:45 +010061 CHECK(mm_unmap(stage1_locked, to, to_end, ppool));
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +010062
63 return true;
64}
65
Fuad Tabba50469e02020-06-30 15:14:28 +010066/**
67 * Loads the secondary VM's kernel.
68 * Stores the kernel size in kernel_size (if kernel_size is not NULL).
69 * Returns false if it cannot load the kernel.
70 */
Andrew Scull72b43c02019-09-18 13:53:45 +010071static bool load_kernel(struct mm_stage1_locked stage1_locked, paddr_t begin,
72 paddr_t end, const struct manifest_vm *manifest_vm,
Fuad Tabba50469e02020-06-30 15:14:28 +010073 const struct memiter *cpio, struct mpool *ppool,
74 size_t *kernel_size)
Andrew Scull72b43c02019-09-18 13:53:45 +010075{
Andrew Scull72b43c02019-09-18 13:53:45 +010076 struct memiter kernel;
Fuad Tabba50469e02020-06-30 15:14:28 +010077 size_t size;
Andrew Scull72b43c02019-09-18 13:53:45 +010078
David Brazdil136f2942019-09-23 14:11:03 +010079 if (!cpio_get_file(cpio, &manifest_vm->kernel_filename, &kernel)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +000080 dlog_error("Could not find kernel file \"%s\".\n",
81 string_data(&manifest_vm->kernel_filename));
Andrew Scull72b43c02019-09-18 13:53:45 +010082 return false;
83 }
84
Fuad Tabba50469e02020-06-30 15:14:28 +010085 size = memiter_size(&kernel);
86 if (pa_difference(begin, end) < size) {
Andrew Walbran17eebf92020-02-05 16:35:49 +000087 dlog_error("Kernel is larger than available memory.\n");
Andrew Scull72b43c02019-09-18 13:53:45 +010088 return false;
89 }
90
91 if (!copy_to_unmapped(stage1_locked, begin, &kernel, ppool)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +000092 dlog_error("Unable to copy kernel.\n");
Andrew Scull72b43c02019-09-18 13:53:45 +010093 return false;
94 }
95
Fuad Tabba50469e02020-06-30 15:14:28 +010096 if (kernel_size) {
97 *kernel_size = size;
98 }
99
Andrew Scull72b43c02019-09-18 13:53:45 +0100100 return true;
101}
102
Manish Pandeyd34f8892020-06-19 17:41:07 +0100103/*
104 * Link RX/TX buffers provided in partition manifest to mailbox
105 */
106static bool link_rxtx_to_mailbox(struct mm_stage1_locked stage1_locked,
107 struct vm_locked vm_locked, struct rx_tx rxtx,
108 struct mpool *ppool)
109{
110 struct ffa_value ret;
111 ipaddr_t send;
112 ipaddr_t recv;
113 uint32_t page_count;
114
115 send = ipa_init(rxtx.tx_buffer->base_address);
116 recv = ipa_init(rxtx.rx_buffer->base_address);
117 page_count = rxtx.tx_buffer->page_count;
118
119 ret = api_vm_configure_pages(stage1_locked, vm_locked, send, recv,
120 page_count, ppool);
121 if (ret.func != FFA_SUCCESS_32) {
122 return false;
123 }
124
Karl Meakine8937d92024-03-19 16:04:25 +0000125 dlog_verbose(" mailbox: send = %p, recv = %p\n",
Manish Pandeyd34f8892020-06-19 17:41:07 +0100126 vm_locked.vm->mailbox.send, vm_locked.vm->mailbox.recv);
127
128 return true;
129}
130
Raghu Krishnamurthyad38a9c2022-07-20 07:30:36 -0700131static void infer_interrupt(struct interrupt_info interrupt,
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500132 struct interrupt_descriptor *int_desc)
133{
134 uint32_t attr = interrupt.attributes;
135
136 interrupt_desc_set_id(int_desc, interrupt.id);
137 interrupt_desc_set_priority(int_desc,
138 (attr >> INT_DESC_PRIORITY_SHIFT) & 0xff);
139
140 /* Refer to the comments in interrupt_descriptor struct definition. */
141 interrupt_desc_set_type_config_sec_state(
142 int_desc,
143 (((attr >> INT_DESC_TYPE_SHIFT) & 0x3) << 2) |
144 (((attr >> INT_DESC_CONFIG_SHIFT) & 0x1) << 1) |
145 ((attr >> INT_DESC_SEC_STATE_SHIFT) & 0x1));
146
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700147 if (interrupt.mpidr_valid) {
148 interrupt_desc_set_mpidr(int_desc, interrupt.mpidr);
149 } else {
150 interrupt_desc_set_mpidr_invalid(int_desc);
151 }
152
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500153 interrupt_desc_set_valid(int_desc, true);
Madhukar Pappireddy938faaf2023-07-31 17:56:55 -0500154 interrupt_desc_set_enabled(int_desc, true);
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500155}
156
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100157/**
Andrew Scullae9962e2019-10-03 16:51:16 +0100158 * Performs VM loading activities that are common between the primary and
159 * secondaries.
160 */
Manish Pandeyd34f8892020-06-19 17:41:07 +0100161static bool load_common(struct mm_stage1_locked stage1_locked,
162 struct vm_locked vm_locked,
163 const struct manifest_vm *manifest_vm,
164 struct mpool *ppool)
Andrew Scullae9962e2019-10-03 16:51:16 +0100165{
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500166 struct device_region dev_region;
Raghu Krishnamurthyad38a9c2022-07-20 07:30:36 -0700167 struct interrupt_info interrupt;
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500168 uint32_t k = 0;
169
Manish Pandeyd34f8892020-06-19 17:41:07 +0100170 vm_locked.vm->smc_whitelist = manifest_vm->smc_whitelist;
Olivier Depreza15f2352022-09-26 09:17:24 +0200171 vm_locked.vm->power_management =
172 manifest_vm->partition.power_management;
Andrew Scullae9962e2019-10-03 16:51:16 +0100173
Kathleen Capella422b10b2023-06-30 18:28:27 -0400174 /* Populate array of UUIDs. */
175 for (uint16_t i = 0; i < PARTITION_MAX_UUIDS; i++) {
176 struct ffa_uuid current_uuid = manifest_vm->partition.uuids[i];
177
178 if (ffa_uuid_is_null(&current_uuid)) {
179 break;
180 }
181
182 vm_locked.vm->uuids[i] = current_uuid;
183 }
184
J-Alvescc542042024-07-24 19:13:22 +0100185 /*
186 * Populate the interrupt descriptor for current VM.
187 * They can be enabled in runtime using HF_INTERRUPT_ENABLE.
188 */
Raghu Krishnamurthy641dcd82022-07-19 23:21:20 -0700189 for (uint16_t i = 0; i < PARTITION_MAX_DEVICE_REGIONS; i++) {
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500190 dev_region = manifest_vm->partition.dev_regions[i];
191
192 CHECK(dev_region.interrupt_count <=
Raghu Krishnamurthy641dcd82022-07-19 23:21:20 -0700193 PARTITION_MAX_INTERRUPTS_PER_DEVICE);
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500194
195 for (uint8_t j = 0; j < dev_region.interrupt_count; j++) {
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700196 struct interrupt_descriptor int_desc = {0};
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500197
198 interrupt = dev_region.interrupts[j];
199 infer_interrupt(interrupt, &int_desc);
200 vm_locked.vm->interrupt_desc[k] = int_desc;
Madhukar Pappireddy938faaf2023-07-31 17:56:55 -0500201 assert(int_desc.enabled);
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500202
203 k++;
204 CHECK(k <= VM_MANIFEST_MAX_INTERRUPTS);
205 }
206 }
J-Alvescc542042024-07-24 19:13:22 +0100207
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500208 dlog_verbose("VM has %d physical interrupts defined in manifest.\n", k);
209
Manish Pandeyd34f8892020-06-19 17:41:07 +0100210 if (manifest_vm->is_ffa_partition) {
Daniel Boulbybaeaf2e2021-12-09 11:42:36 +0000211 vm_locked.vm->ffa_version = manifest_vm->partition.ffa_version;
Manish Pandeyd34f8892020-06-19 17:41:07 +0100212 /* Link rxtx buffers to mailbox */
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700213 if (manifest_vm->partition.rxtx.available) {
Manish Pandeyd34f8892020-06-19 17:41:07 +0100214 if (!link_rxtx_to_mailbox(stage1_locked, vm_locked,
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700215 manifest_vm->partition.rxtx,
Manish Pandeyd34f8892020-06-19 17:41:07 +0100216 ppool)) {
217 dlog_error(
218 "Unable to Link RX/TX buffer with "
219 "mailbox.\n");
220 return false;
221 }
222 }
J-Alvesb37fd082020-10-22 12:29:21 +0100223
Maksims Svecovsb596eab2021-04-27 00:52:27 +0100224 vm_locked.vm->messaging_method =
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700225 manifest_vm->partition.messaging_method;
Manish Pandeyf3be6392020-09-24 17:26:09 +0100226
Madhukar Pappireddy84154052022-06-21 18:30:25 -0500227 vm_locked.vm->ns_interrupts_action =
228 manifest_vm->partition.ns_interrupts_action;
Maksims Svecovs9ddf86a2021-05-06 17:17:21 +0100229
Madhukar Pappireddy5c04a382022-12-28 11:29:26 -0600230 vm_locked.vm->other_s_interrupts_action =
231 manifest_vm->partition.other_s_interrupts_action;
232
Madhukar Pappireddy046dad02022-06-21 18:43:33 -0500233 vm_locked.vm->me_signal_virq =
234 manifest_vm->partition.me_signal_virq;
235
J-Alvesa4730db2021-11-02 10:31:01 +0000236 vm_locked.vm->notifications.enabled =
237 manifest_vm->partition.notification_support;
238
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700239 vm_locked.vm->boot_order = manifest_vm->partition.boot_order;
240
J-Alves7d38f7b2022-04-13 13:22:30 +0100241 vm_locked.vm->boot_info.gp_register_num =
242 manifest_vm->partition.gp_register_num;
243
244 if (manifest_vm->partition.boot_info) {
245 /*
246 * If the partition expects the boot information blob
247 * per the ff-a v1.1 boot protocol, then its address
248 * shall match the partition's load address.
249 */
250 vm_locked.vm->boot_info.blob_addr =
251 ipa_init(manifest_vm->partition.load_addr);
252 }
253
J-Alvesb37fd082020-10-22 12:29:21 +0100254 /* Updating boot list according to boot_order */
Olivier Deprez181074b2023-02-02 14:53:23 +0100255 vcpu_update_boot(vm_get_vcpu(vm_locked.vm, 0));
J-Alvesa0f317d2021-06-09 13:31:59 +0100256
J-Alves09ff9d82021-11-02 11:55:20 +0000257 if (vm_locked_are_notifications_enabled(vm_locked) &&
J-Alvesa4730db2021-11-02 10:31:01 +0000258 !plat_ffa_notifications_bitmap_create_call(
259 vm_locked.vm->id, vm_locked.vm->vcpu_count)) {
260 return false;
J-Alvesa9c7cba2021-08-25 16:26:11 +0100261 }
Manish Pandeyd34f8892020-06-19 17:41:07 +0100262 }
J-Alvesb37fd082020-10-22 12:29:21 +0100263
Fuad Tabba56970712020-01-10 11:20:09 +0000264 /* Initialize architecture-specific features. */
Manish Pandeyd34f8892020-06-19 17:41:07 +0100265 arch_vm_features_set(vm_locked.vm);
Fuad Tabba77a4b012019-11-15 12:13:08 +0000266
Madhukar Pappireddy54680c72020-10-23 15:02:38 -0500267 if (!plat_iommu_attach_peripheral(stage1_locked, vm_locked, manifest_vm,
268 ppool)) {
269 dlog_error("Unable to attach upstream peripheral device\n");
270 return false;
271 }
272
Andrew Scullae9962e2019-10-03 16:51:16 +0100273 return true;
274}
275
276/**
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100277 * Loads the primary VM.
278 */
Andrew Scull72b43c02019-09-18 13:53:45 +0100279static bool load_primary(struct mm_stage1_locked stage1_locked,
Andrew Scullae9962e2019-10-03 16:51:16 +0100280 const struct manifest_vm *manifest_vm,
Andrew Scullb5f49e02019-10-02 13:20:47 +0100281 const struct memiter *cpio,
282 const struct boot_params *params, struct mpool *ppool)
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100283{
Olivier Deprez62d99e32020-01-09 15:58:07 +0100284 paddr_t primary_begin;
285 ipaddr_t primary_entry;
David Brazdile6f83222019-09-23 14:47:37 +0100286 struct vm *vm;
Andrew Scull3c257452019-11-26 13:32:50 +0000287 struct vm_locked vm_locked;
David Brazdile6f83222019-09-23 14:47:37 +0100288 struct vcpu_locked vcpu_locked;
Andrew Scullb5f49e02019-10-02 13:20:47 +0100289 size_t i;
Andrew Scull3c257452019-11-26 13:32:50 +0000290 bool ret;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100291
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700292 if (manifest_vm->is_ffa_partition && !manifest_vm->is_hyp_loaded) {
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700293 primary_begin = pa_init(manifest_vm->partition.load_addr);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100294 primary_entry = ipa_add(ipa_from_pa(primary_begin),
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700295 manifest_vm->partition.ep_offset);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100296 } else {
297 primary_begin =
298 (manifest_vm->primary.boot_address ==
299 MANIFEST_INVALID_ADDRESS)
300 ? layout_primary_begin()
301 : pa_init(manifest_vm->primary.boot_address);
302 primary_entry = ipa_from_pa(primary_begin);
303 }
304
David Brazdil080ee312020-02-25 15:30:30 -0800305 paddr_t primary_end = pa_add(primary_begin, RSIZE_MAX);
Andrew Scull72b43c02019-09-18 13:53:45 +0100306
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800307 /* Primary VM must be a VM */
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700308 CHECK(manifest_vm->partition.run_time_el == EL1);
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800309
Olivier Deprez62d99e32020-01-09 15:58:07 +0100310 /*
311 * Load the kernel if a filename is specified in the VM manifest.
312 * For an FF-A partition, kernel_filename is undefined indicating
313 * the partition package has already been loaded prior to Hafnium
314 * booting.
315 */
316 if (!string_is_empty(&manifest_vm->kernel_filename)) {
317 if (!load_kernel(stage1_locked, primary_begin, primary_end,
Fuad Tabba50469e02020-06-30 15:14:28 +0100318 manifest_vm, cpio, ppool, NULL)) {
Olivier Deprez62d99e32020-01-09 15:58:07 +0100319 dlog_error("Unable to load primary kernel.\n");
320 return false;
321 }
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100322 }
323
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600324 if (!vm_init_next(MAX_CPUS, ppool, &vm, false,
325 manifest_vm->partition.dma_device_count)) {
Andrew Walbran7586e042020-02-18 18:19:26 +0000326 dlog_error("Unable to initialise primary VM.\n");
David Brazdile6f83222019-09-23 14:47:37 +0100327 return false;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100328 }
329
Karl Meakin5e996992024-05-20 11:27:07 +0100330 if (!vm_is_primary(vm)) {
Andrew Walbran7586e042020-02-18 18:19:26 +0000331 dlog_error("Primary VM was not given correct ID.\n");
David Brazdile6f83222019-09-23 14:47:37 +0100332 return false;
333 }
334
Andrew Scull3c257452019-11-26 13:32:50 +0000335 vm_locked = vm_lock(vm);
336
Andrew Scull48929fd2020-01-28 10:39:10 +0000337 if (params->device_mem_ranges_count == 0) {
338 /*
339 * Map 1TB of address space as device memory to, most likely,
340 * make all devices available to the primary VM.
341 *
342 * TODO: remove this once all targets provide valid ranges.
343 */
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800344 dlog_warning(
345 "Device memory not provided, defaulting to 1 TB.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000346
347 if (!vm_identity_map(
348 vm_locked, pa_init(0),
349 pa_init(UINT64_C(1024) * 1024 * 1024 * 1024),
350 MM_MODE_R | MM_MODE_W | MM_MODE_D, ppool, NULL)) {
351 dlog_error(
352 "Unable to initialise address space for "
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800353 "primary VM.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000354 ret = false;
355 goto out;
356 }
David Brazdile6f83222019-09-23 14:47:37 +0100357 }
358
Andrew Scullb5f49e02019-10-02 13:20:47 +0100359 /* Map normal memory as such to permit caching, execution, etc. */
360 for (i = 0; i < params->mem_ranges_count; ++i) {
Andrew Scull3c257452019-11-26 13:32:50 +0000361 if (!vm_identity_map(vm_locked, params->mem_ranges[i].begin,
362 params->mem_ranges[i].end,
363 MM_MODE_R | MM_MODE_W | MM_MODE_X, ppool,
364 NULL)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000365 dlog_error(
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800366 "Unable to initialise memory for primary "
367 "VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000368 ret = false;
369 goto out;
Andrew Scullb5f49e02019-10-02 13:20:47 +0100370 }
371 }
372
Andrew Scull48929fd2020-01-28 10:39:10 +0000373 /* Map device memory as such to prevent execution, speculation etc. */
374 for (i = 0; i < params->device_mem_ranges_count; ++i) {
375 if (!vm_identity_map(
376 vm_locked, params->device_mem_ranges[i].begin,
377 params->device_mem_ranges[i].end,
378 MM_MODE_R | MM_MODE_W | MM_MODE_D, ppool, NULL)) {
379 dlog("Unable to initialise device memory for primary "
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800380 "VM.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000381 ret = false;
382 goto out;
383 }
384 }
385
Manish Pandeyd34f8892020-06-19 17:41:07 +0100386 if (!load_common(stage1_locked, vm_locked, manifest_vm, ppool)) {
387 ret = false;
388 goto out;
389 }
390
Andrew Scull3c257452019-11-26 13:32:50 +0000391 if (!vm_unmap_hypervisor(vm_locked, ppool)) {
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800392 dlog_error("Unable to unmap hypervisor from primary VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000393 ret = false;
394 goto out;
David Brazdile6f83222019-09-23 14:47:37 +0100395 }
396
Andrew Scullb1a6d0d2020-01-29 11:25:12 +0000397 if (!plat_iommu_unmap_iommus(vm_locked, ppool)) {
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800398 dlog_error("Unable to unmap IOMMUs from primary VM.\n");
Andrew Scullb1a6d0d2020-01-29 11:25:12 +0000399 ret = false;
400 goto out;
401 }
402
Karl Meakine8937d92024-03-19 16:04:25 +0000403 dlog_info("Loaded primary VM with %u vCPUs, entry at %#lx.\n",
Andrew Walbran7586e042020-02-18 18:19:26 +0000404 vm->vcpu_count, pa_addr(primary_begin));
405
Olivier Deprez181074b2023-02-02 14:53:23 +0100406 /* Mark the first VM vCPU to be the first booted vCPU. */
407 vcpu_update_boot(vm_get_vcpu(vm, 0));
Olivier Deprezb9adff42021-02-01 12:14:05 +0100408
David Brazdile6f83222019-09-23 14:47:37 +0100409 vcpu_locked = vcpu_lock(vm_get_vcpu(vm, 0));
Olivier Deprez62d99e32020-01-09 15:58:07 +0100410 vcpu_on(vcpu_locked, primary_entry, params->kernel_arg);
David Brazdile6f83222019-09-23 14:47:37 +0100411 vcpu_unlock(&vcpu_locked);
Andrew Scull3c257452019-11-26 13:32:50 +0000412 ret = true;
David Brazdile6f83222019-09-23 14:47:37 +0100413
Andrew Scull3c257452019-11-26 13:32:50 +0000414out:
415 vm_unlock(&vm_locked);
416
417 return ret;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100418}
419
Fuad Tabba50469e02020-06-30 15:14:28 +0100420/**
421 * Loads the secondary VM's FDT.
422 * Stores the total allocated size for the FDT in fdt_allocated_size (if
423 * fdt_allocated_size is not NULL). The allocated size includes additional space
424 * for potential patching.
425 */
426static bool load_secondary_fdt(struct mm_stage1_locked stage1_locked,
427 paddr_t end, size_t fdt_max_size,
428 const struct manifest_vm *manifest_vm,
429 const struct memiter *cpio, struct mpool *ppool,
430 paddr_t *fdt_addr, size_t *fdt_allocated_size)
431{
432 struct memiter fdt;
433 size_t allocated_size;
434
435 CHECK(!string_is_empty(&manifest_vm->secondary.fdt_filename));
436
437 if (!cpio_get_file(cpio, &manifest_vm->secondary.fdt_filename, &fdt)) {
438 dlog_error("Cannot open the secondary VM's FDT.\n");
439 return false;
440 }
441
442 /*
Olivier Deprez701e8bf2022-04-06 18:45:18 +0200443 * Ensure the FDT has one additional page at the end for patching,
Fuad Tabba50469e02020-06-30 15:14:28 +0100444 * and align it to the page boundary.
445 */
446 allocated_size = align_up(memiter_size(&fdt), PAGE_SIZE) + PAGE_SIZE;
447
448 if (allocated_size > fdt_max_size) {
449 dlog_error(
Karl Meakine8937d92024-03-19 16:04:25 +0000450 "FDT allocated space (%zu) is more than the specified "
451 "maximum to use (%zu).\n",
Fuad Tabba50469e02020-06-30 15:14:28 +0100452 allocated_size, fdt_max_size);
453 return false;
454 }
455
456 /* Load the FDT to the end of the VM's allocated memory space. */
457 *fdt_addr = pa_init(pa_addr(pa_sub(end, allocated_size)));
458
Karl Meakine8937d92024-03-19 16:04:25 +0000459 dlog_info("Loading secondary FDT of allocated size %zu at 0x%lx.\n",
Fuad Tabba50469e02020-06-30 15:14:28 +0100460 allocated_size, pa_addr(*fdt_addr));
461
462 if (!copy_to_unmapped(stage1_locked, *fdt_addr, &fdt, ppool)) {
463 dlog_error("Unable to copy FDT.\n");
464 return false;
465 }
466
467 if (fdt_allocated_size) {
468 *fdt_allocated_size = allocated_size;
469 }
470
471 return true;
472}
473
Olivier Deprez035fa152022-03-14 11:19:10 +0100474/**
475 * Convert the manifest memory region attributes to mode consumed by mm layer.
476 */
477static uint32_t memory_region_attributes_to_mode(uint32_t attributes)
478{
479 uint32_t mode = 0U;
480
481 if ((attributes & MANIFEST_REGION_ATTR_READ) != 0U) {
482 mode |= MM_MODE_R;
483 }
484
485 if ((attributes & MANIFEST_REGION_ATTR_WRITE) != 0U) {
486 mode |= MM_MODE_W;
487 }
488
489 if ((attributes & MANIFEST_REGION_ATTR_EXEC) != 0U) {
490 mode |= MM_MODE_X;
491 }
492
493 assert((mode == (MM_MODE_R | MM_MODE_W)) || (mode == MM_MODE_R) ||
494 (mode == (MM_MODE_R | MM_MODE_X)));
495
496 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0U) {
497 mode |= arch_mm_extra_attributes_from_vm(HF_HYPERVISOR_VM_ID);
498 }
499
500 return mode;
501}
502
503/**
504 * Convert the manifest device region attributes to mode consumed by mm layer.
505 */
506static uint32_t device_region_attributes_to_mode(uint32_t attributes)
507{
508 uint32_t mode = 0U;
509
510 if ((attributes & MANIFEST_REGION_ATTR_READ) != 0U) {
511 mode |= MM_MODE_R;
512 }
513
514 if ((attributes & MANIFEST_REGION_ATTR_WRITE) != 0U) {
515 mode |= MM_MODE_W;
516 }
517
518 assert((mode == (MM_MODE_R | MM_MODE_W)) || (mode == MM_MODE_R));
519
520 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0U) {
521 mode |= arch_mm_extra_attributes_from_vm(HF_HYPERVISOR_VM_ID);
522 }
523
524 return mode | MM_MODE_D;
525}
526
Daniel Boulbye6df3452022-07-14 18:14:26 +0100527static bool ffa_map_memory_regions(const struct manifest_vm *manifest_vm,
528 const struct vm_locked vm_locked,
529 const struct vm_locked primary_vm_locked,
J-Alvesd8a1d362023-03-08 11:15:28 +0000530 bool is_el0_partition, struct mpool *ppool)
Daniel Boulbye6df3452022-07-14 18:14:26 +0100531{
532#if LOG_LEVEL >= LOG_LEVEL_WARNING
533 const char *error_string = " region security state ignored for ";
534#endif
535 int j = 0;
536 paddr_t region_begin;
537 paddr_t region_end;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100538 size_t size;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100539 uint32_t map_mode;
540 uint32_t attributes;
541
542 /* Map memory-regions */
543 while (j < manifest_vm->partition.mem_region_count) {
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500544 struct memory_region mem_region;
545
546 mem_region = manifest_vm->partition.mem_regions[j];
547 size = mem_region.page_count * PAGE_SIZE;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100548 /*
J-Alvesd8a1d362023-03-08 11:15:28 +0000549 * Identity map memory region for both case,
550 * VA(S-EL0) or IPA(S-EL1).
Daniel Boulbye6df3452022-07-14 18:14:26 +0100551 */
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500552 region_begin = pa_init(mem_region.base_address);
J-Alvesd8a1d362023-03-08 11:15:28 +0000553 region_end = pa_add(region_begin, size);
Daniel Boulbye6df3452022-07-14 18:14:26 +0100554
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500555 attributes = mem_region.attributes;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100556 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0) {
J-Alves661e1b72023-08-02 13:39:40 +0100557 if (ffa_is_vm_id(vm_locked.vm->id)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100558 dlog_warning("Memory%sVMs\n", error_string);
559 attributes &= ~MANIFEST_REGION_ATTR_SECURITY;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100560 }
561 }
562
563 map_mode = memory_region_attributes_to_mode(attributes);
564
565 if (is_el0_partition) {
566 map_mode |= MM_MODE_USER | MM_MODE_NG;
567 }
568
569 if (!vm_identity_map(vm_locked, region_begin, region_end,
570 map_mode, ppool, NULL)) {
571 dlog_error(
572 "Unable to map secondary VM "
573 "memory-region.\n");
574 return false;
575 }
576
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500577 /*
578 * Enforce static DMA isolation through stage 2 address
579 * translation.
580 * Only the DMA device that is specified as part of this memory
581 * region node in the partition manifest will be granted access
582 * to the memory region.
583 */
584 if (mem_region.dma_prop.stream_count > 0 &&
585 !vm_iommu_mm_identity_map(
586 vm_locked, region_begin, region_end, map_mode,
587 ppool, NULL, mem_region.dma_prop.dma_device_id)) {
588 dlog_error(
589 "Unable to map memory-region in the page "
590 "tables of DMA device.\n");
591 return false;
592 }
593
Daniel Boulbye6df3452022-07-14 18:14:26 +0100594 /* Deny the primary VM access to this memory */
595 if (!vm_unmap(primary_vm_locked, region_begin, region_end,
596 ppool)) {
597 dlog_error(
598 "Unable to unmap secondary VM memory-"
599 "region from primary VM.\n");
600 return false;
601 }
602
Karl Meakine8937d92024-03-19 16:04:25 +0000603 dlog_verbose("Memory region %#lx - %#lx allocated.\n",
604 pa_addr(region_begin), pa_addr(region_end));
Daniel Boulbye6df3452022-07-14 18:14:26 +0100605
606 j++;
607 }
608
609 /* Map device-regions */
610 j = 0;
611 while (j < manifest_vm->partition.dev_region_count) {
612 region_begin = pa_init(
613 manifest_vm->partition.dev_regions[j].base_address);
614 size = manifest_vm->partition.dev_regions[j].page_count *
615 PAGE_SIZE;
616 region_end = pa_add(region_begin, size);
617
618 attributes = manifest_vm->partition.dev_regions[j].attributes;
619 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0) {
J-Alves661e1b72023-08-02 13:39:40 +0100620 if (ffa_is_vm_id(vm_locked.vm->id)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100621 dlog_warning("Device%sVMs\n", error_string);
622 attributes &= ~MANIFEST_REGION_ATTR_SECURITY;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100623 }
624 }
625
626 map_mode = device_region_attributes_to_mode(attributes);
627 if (is_el0_partition) {
628 map_mode |= MM_MODE_USER | MM_MODE_NG;
629 }
630
631 if (!vm_identity_map(vm_locked, region_begin, region_end,
632 map_mode, ppool, NULL)) {
633 dlog_error(
634 "Unable to map secondary VM "
635 "device-region.\n");
636 return false;
637 }
638 /* Deny primary VM access to this region */
639 if (!vm_unmap(primary_vm_locked, region_begin, region_end,
640 ppool)) {
641 dlog_error(
642 "Unable to unmap secondary VM device-"
643 "region from primary VM.\n");
644 return false;
645 }
646 j++;
647 }
648 return true;
649}
650
Andrew Scull72b43c02019-09-18 13:53:45 +0100651/*
652 * Loads a secondary VM.
653 */
654static bool load_secondary(struct mm_stage1_locked stage1_locked,
Manish Pandey2145c212020-05-01 16:04:22 +0100655 struct vm_locked primary_vm_locked,
Andrew Scull72b43c02019-09-18 13:53:45 +0100656 paddr_t mem_begin, paddr_t mem_end,
657 const struct manifest_vm *manifest_vm,
J-Alves77b6f4f2023-03-15 11:34:49 +0000658 const struct boot_params *boot_params,
Andrew Scull72b43c02019-09-18 13:53:45 +0100659 const struct memiter *cpio, struct mpool *ppool)
660{
661 struct vm *vm;
Andrew Scull3c257452019-11-26 13:32:50 +0000662 struct vm_locked vm_locked;
Max Shvetsov40108e72020-08-27 12:39:50 +0100663 struct vcpu_locked vcpu_locked;
Andrew Scull72b43c02019-09-18 13:53:45 +0100664 struct vcpu *vcpu;
665 ipaddr_t secondary_entry;
Andrew Scull3c257452019-11-26 13:32:50 +0000666 bool ret;
Fuad Tabba50469e02020-06-30 15:14:28 +0100667 paddr_t fdt_addr;
668 bool has_fdt;
669 size_t kernel_size = 0;
670 const size_t mem_size = pa_difference(mem_begin, mem_end);
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800671 uint32_t map_mode;
Daniel Boulby874d5432023-04-27 12:40:24 +0100672 bool is_el0_partition = manifest_vm->partition.run_time_el == S_EL0 ||
673 manifest_vm->partition.run_time_el == EL0;
Jens Wiklanderb697ad02022-11-04 10:15:03 +0100674 size_t n;
Andrew Scull72b43c02019-09-18 13:53:45 +0100675
Olivier Deprez62d99e32020-01-09 15:58:07 +0100676 /*
677 * Load the kernel if a filename is specified in the VM manifest.
678 * For an FF-A partition, kernel_filename is undefined indicating
679 * the partition package has already been loaded prior to Hafnium
680 * booting.
681 */
682 if (!string_is_empty(&manifest_vm->kernel_filename)) {
683 if (!load_kernel(stage1_locked, mem_begin, mem_end, manifest_vm,
Fuad Tabba50469e02020-06-30 15:14:28 +0100684 cpio, ppool, &kernel_size)) {
Olivier Deprez62d99e32020-01-09 15:58:07 +0100685 dlog_error("Unable to load kernel.\n");
686 return false;
687 }
Andrew Scull72b43c02019-09-18 13:53:45 +0100688 }
689
Fuad Tabba50469e02020-06-30 15:14:28 +0100690 has_fdt = !string_is_empty(&manifest_vm->secondary.fdt_filename);
691 if (has_fdt) {
692 /*
693 * Ensure that the FDT does not overwrite the kernel or overlap
694 * its page, for the FDT to start at a page boundary.
695 */
696 const size_t fdt_max_size =
697 mem_size - align_up(kernel_size, PAGE_SIZE);
698
699 size_t fdt_allocated_size;
700
701 if (!load_secondary_fdt(stage1_locked, mem_end, fdt_max_size,
702 manifest_vm, cpio, ppool, &fdt_addr,
703 &fdt_allocated_size)) {
704 dlog_error("Unable to load FDT.\n");
705 return false;
706 }
707
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700708 if (manifest_vm->is_ffa_partition) {
709 plat_ffa_parse_partition_manifest(
710 stage1_locked, fdt_addr, fdt_allocated_size,
J-Alves77b6f4f2023-03-15 11:34:49 +0000711 manifest_vm, boot_params, ppool);
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700712 }
713
Fuad Tabba50469e02020-06-30 15:14:28 +0100714 if (!fdt_patch_mem(stage1_locked, fdt_addr, fdt_allocated_size,
715 mem_begin, mem_end, ppool)) {
716 dlog_error("Unable to patch FDT.\n");
717 return false;
718 }
719 }
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800720 /*
721 * An S-EL0 partition must contain only 1 vCPU (UP migratable) per the
722 * FF-A 1.0 spec.
723 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100724 CHECK(!is_el0_partition || manifest_vm->secondary.vcpu_count == 1);
Fuad Tabba50469e02020-06-30 15:14:28 +0100725
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800726 if (!vm_init_next(manifest_vm->secondary.vcpu_count, ppool, &vm,
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600727 is_el0_partition,
728 manifest_vm->partition.dma_device_count)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000729 dlog_error("Unable to initialise VM.\n");
Andrew Scull72b43c02019-09-18 13:53:45 +0100730 return false;
731 }
732
Andrew Scull3c257452019-11-26 13:32:50 +0000733 vm_locked = vm_lock(vm);
734
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800735 /*
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700736 * Grant the VM access to the memory. For VM's we mark all memory in
737 * stage-2 tables as RWX and the VM can control permissions using
738 * stage-1 translations. For S-EL0 partitions, hafnium maps the entire
739 * region of memory for the partition as RX. The partition is then
740 * expected to perform its owns relocations and call the FFA_MEM_PERM_*
741 * API's to change permissions on its image layout.
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800742 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100743 if (is_el0_partition) {
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700744 map_mode = MM_MODE_R | MM_MODE_X | MM_MODE_USER | MM_MODE_NG;
745 } else {
746 map_mode = MM_MODE_R | MM_MODE_W | MM_MODE_X;
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800747 }
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700748
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800749 if (!vm_identity_map(vm_locked, mem_begin, mem_end, map_mode, ppool,
Andrew Scull3c257452019-11-26 13:32:50 +0000750 &secondary_entry)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000751 dlog_error("Unable to initialise memory.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000752 ret = false;
753 goto out;
Andrew Scull72b43c02019-09-18 13:53:45 +0100754 }
755
Olivier Deprez62d99e32020-01-09 15:58:07 +0100756 if (manifest_vm->is_ffa_partition) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100757 if (!ffa_map_memory_regions(manifest_vm, vm_locked,
J-Alvesd8a1d362023-03-08 11:15:28 +0000758 primary_vm_locked, is_el0_partition,
759 ppool)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100760 ret = false;
761 goto out;
Manish Pandey2145c212020-05-01 16:04:22 +0100762 }
763
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700764 secondary_entry = ipa_add(secondary_entry,
765 manifest_vm->partition.ep_offset);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100766 }
767
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800768 /*
769 * Map hypervisor into the VM's page table. The hypervisor pages will
770 * not be accessible from EL0 since it will not be marked for user
771 * access.
772 * TODO: Map only the exception vectors and data that exception vectors
773 * require and not the entire hypervisor. This helps with speculative
774 * side-channel attacks.
775 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100776 if (is_el0_partition) {
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800777 CHECK(vm_identity_map(vm_locked, layout_text_begin(),
778 layout_text_end(), MM_MODE_X, ppool,
779 NULL));
780
781 CHECK(vm_identity_map(vm_locked, layout_rodata_begin(),
782 layout_rodata_end(), MM_MODE_R, ppool,
783 NULL));
784
785 CHECK(vm_identity_map(vm_locked, layout_data_begin(),
786 layout_data_end(), MM_MODE_R | MM_MODE_W,
787 ppool, NULL));
Maksims Svecovs134b8f92022-03-04 15:14:09 +0000788
789 CHECK(arch_stack_mm_init(mm_lock_ptable_unsafe(&vm->ptable),
790 ppool));
791
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800792 plat_console_mm_init(mm_lock_ptable_unsafe(&vm->ptable), ppool);
793 }
794
Manish Pandeyd34f8892020-06-19 17:41:07 +0100795 if (!load_common(stage1_locked, vm_locked, manifest_vm, ppool)) {
796 ret = false;
797 goto out;
798 }
799
Karl Meakine8937d92024-03-19 16:04:25 +0000800 dlog_info("Loaded with %u vCPUs, entry at %#lx.\n",
Manish Pandey2145c212020-05-01 16:04:22 +0100801 manifest_vm->secondary.vcpu_count, pa_addr(mem_begin));
802
Andrew Scull72b43c02019-09-18 13:53:45 +0100803 vcpu = vm_get_vcpu(vm, 0);
Fuad Tabba50469e02020-06-30 15:14:28 +0100804
Max Shvetsov40108e72020-08-27 12:39:50 +0100805 vcpu_locked = vcpu_lock(vcpu);
Madhukar Pappireddy046dad02022-06-21 18:43:33 -0500806
Fuad Tabba50469e02020-06-30 15:14:28 +0100807 if (has_fdt) {
Max Shvetsov40108e72020-08-27 12:39:50 +0100808 vcpu_secondary_reset_and_start(vcpu_locked, secondary_entry,
Fuad Tabba50469e02020-06-30 15:14:28 +0100809 pa_addr(fdt_addr));
810 } else {
811 /*
812 * Without an FDT, secondary VMs expect the memory size to be
813 * passed in register x0, which is what
814 * vcpu_secondary_reset_and_start does in this case.
815 */
Max Shvetsov40108e72020-08-27 12:39:50 +0100816 vcpu_secondary_reset_and_start(vcpu_locked, secondary_entry,
817 mem_size);
Fuad Tabba50469e02020-06-30 15:14:28 +0100818 }
819
Max Shvetsov40108e72020-08-27 12:39:50 +0100820 vcpu_unlock(&vcpu_locked);
821
Jens Wiklanderb697ad02022-11-04 10:15:03 +0100822 /*
823 * For all vCPUs,
824 * in a VM: enable the notification pending virtual interrupt if
825 * requested in the manifest.
826 * in a SP: enable the NPI and managed exit virtual interrupts if
827 * requested in the manifest. For a S-EL0 partition, enable
828 * the virtual interrupts IDs matching the secure physical
829 * interrupt IDs declared in device regions.
830 */
831 for (n = 0; n < manifest_vm->secondary.vcpu_count; n++) {
832 vcpu = vm_get_vcpu(vm, n);
833 vcpu_locked = vcpu_lock(vcpu);
834 plat_ffa_enable_virtual_interrupts(vcpu_locked, vm_locked);
835 vcpu_unlock(&vcpu_locked);
836 }
837
Andrew Scull3c257452019-11-26 13:32:50 +0000838 ret = true;
Andrew Scull72b43c02019-09-18 13:53:45 +0100839
Andrew Scull3c257452019-11-26 13:32:50 +0000840out:
841 vm_unlock(&vm_locked);
842
843 return ret;
Andrew Scull72b43c02019-09-18 13:53:45 +0100844}
845
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100846/**
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100847 * Try to find a memory range of the given size within the given ranges, and
848 * remove it from them. Return true on success, or false if no large enough
849 * contiguous range is found.
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100850 */
Hong-Seok Kim09648362019-05-23 15:47:11 +0900851static bool carve_out_mem_range(struct mem_range *mem_ranges,
852 size_t mem_ranges_count, uint64_t size_to_find,
853 paddr_t *found_begin, paddr_t *found_end)
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100854{
855 size_t i;
856
Wedson Almeida Filho81568c42019-01-04 13:33:02 +0000857 /*
858 * TODO(b/116191358): Consider being cleverer about how we pack VMs
859 * together, with a non-greedy algorithm.
860 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100861 for (i = 0; i < mem_ranges_count; ++i) {
862 if (size_to_find <=
Andrew Walbran2cb43392019-04-17 12:52:45 +0100863 pa_difference(mem_ranges[i].begin, mem_ranges[i].end)) {
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +0100864 /*
865 * This range is big enough, take some of it from the
866 * end and reduce its size accordingly.
867 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100868 *found_end = mem_ranges[i].end;
869 *found_begin = pa_init(pa_addr(mem_ranges[i].end) -
870 size_to_find);
871 mem_ranges[i].end = *found_begin;
872 return true;
873 }
874 }
875 return false;
876}
877
878/**
879 * Given arrays of memory ranges before and after memory was removed for
880 * secondary VMs, add the difference to the reserved ranges of the given update.
881 * Return true on success, or false if there would be more than MAX_MEM_RANGES
882 * reserved ranges after adding the new ones.
883 * `before` and `after` must be arrays of exactly `mem_ranges_count` elements.
884 */
Hong-Seok Kim09648362019-05-23 15:47:11 +0900885static bool update_reserved_ranges(struct boot_params_update *update,
886 const struct mem_range *before,
887 const struct mem_range *after,
888 size_t mem_ranges_count)
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100889{
890 size_t i;
891
892 for (i = 0; i < mem_ranges_count; ++i) {
893 if (pa_addr(after[i].begin) > pa_addr(before[i].begin)) {
894 if (update->reserved_ranges_count >= MAX_MEM_RANGES) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000895 dlog_error(
896 "Too many reserved ranges after "
897 "loading secondary VMs.\n");
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100898 return false;
899 }
900 update->reserved_ranges[update->reserved_ranges_count]
901 .begin = before[i].begin;
902 update->reserved_ranges[update->reserved_ranges_count]
903 .end = after[i].begin;
904 update->reserved_ranges_count++;
905 }
906 if (pa_addr(after[i].end) < pa_addr(before[i].end)) {
907 if (update->reserved_ranges_count >= MAX_MEM_RANGES) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000908 dlog_error(
909 "Too many reserved ranges after "
910 "loading secondary VMs.\n");
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100911 return false;
912 }
913 update->reserved_ranges[update->reserved_ranges_count]
914 .begin = after[i].end;
915 update->reserved_ranges[update->reserved_ranges_count]
916 .end = before[i].end;
917 update->reserved_ranges_count++;
918 }
919 }
920
921 return true;
922}
923
Olivier Deprez05046922023-03-09 15:48:40 +0100924static bool init_other_world_vm(const struct boot_params *params,
925 struct mpool *ppool)
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100926{
Olivier Deprez96a2a262020-06-11 17:21:38 +0200927 struct vm *other_world_vm;
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100928 size_t i;
Andrew Scull72b43c02019-09-18 13:53:45 +0100929
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100930 /*
Olivier Deprez96a2a262020-06-11 17:21:38 +0200931 * Initialise the dummy VM which represents the opposite world:
932 * -TrustZone (or the SPMC) when running the Hypervisor
933 * -the Hypervisor when running TZ/SPMC
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100934 */
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600935 other_world_vm = vm_init(HF_OTHER_WORLD_ID, MAX_CPUS, ppool, false, 0);
Olivier Deprez96a2a262020-06-11 17:21:38 +0200936 CHECK(other_world_vm != NULL);
937
938 for (i = 0; i < MAX_CPUS; i++) {
939 struct vcpu *vcpu = vm_get_vcpu(other_world_vm, i);
940 struct cpu *cpu = cpu_find_index(i);
941
942 vcpu->cpu = cpu;
943 }
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100944
Olivier Deprez05046922023-03-09 15:48:40 +0100945 return arch_other_world_vm_init(other_world_vm, params, ppool);
Olivier Deprez112d2b52020-09-30 07:39:23 +0200946}
947
948/*
949 * Loads alls VMs from the manifest.
950 */
951bool load_vms(struct mm_stage1_locked stage1_locked,
952 const struct manifest *manifest, const struct memiter *cpio,
953 const struct boot_params *params,
954 struct boot_params_update *update, struct mpool *ppool)
955{
956 struct vm *primary;
957 struct mem_range mem_ranges_available[MAX_MEM_RANGES];
958 struct vm_locked primary_vm_locked;
959 size_t i;
960 bool success = true;
961
Andrew Walbranf8716782020-10-29 17:07:07 +0000962 /**
963 * Only try to load the primary VM if it is supposed to be in this
964 * world.
965 */
966 if (vm_id_is_current_world(HF_PRIMARY_VM_ID)) {
967 if (!load_primary(stage1_locked,
968 &manifest->vm[HF_PRIMARY_VM_INDEX], cpio,
969 params, ppool)) {
970 dlog_error("Unable to load primary VM.\n");
971 return false;
972 }
Olivier Deprez112d2b52020-09-30 07:39:23 +0200973 }
974
Olivier Deprez05046922023-03-09 15:48:40 +0100975 if (!init_other_world_vm(params, ppool)) {
Olivier Deprez112d2b52020-09-30 07:39:23 +0200976 return false;
977 }
978
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100979 static_assert(
980 sizeof(mem_ranges_available) == sizeof(params->mem_ranges),
981 "mem_range arrays must be the same size for memcpy.");
982 static_assert(sizeof(mem_ranges_available) < 500,
983 "This will use too much stack, either make "
984 "MAX_MEM_RANGES smaller or change this.");
Andrew Sculla1aa2ba2019-04-05 11:49:02 +0100985 memcpy_s(mem_ranges_available, sizeof(mem_ranges_available),
986 params->mem_ranges, sizeof(params->mem_ranges));
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100987
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100988 /* Round the last addresses down to the page size. */
989 for (i = 0; i < params->mem_ranges_count; ++i) {
Alfredo Mazzinghieb1997c2019-02-07 18:00:01 +0000990 mem_ranges_available[i].end = pa_init(align_down(
991 pa_addr(mem_ranges_available[i].end), PAGE_SIZE));
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100992 }
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +0100993
Andrew Scull3c257452019-11-26 13:32:50 +0000994 primary = vm_find(HF_PRIMARY_VM_ID);
995 primary_vm_locked = vm_lock(primary);
996
David Brazdil0251b942019-09-10 15:59:50 +0100997 for (i = 0; i < manifest->vm_count; ++i) {
David Brazdil0dbb41f2019-09-09 18:03:35 +0100998 const struct manifest_vm *manifest_vm = &manifest->vm[i];
J-Alves19e20cf2023-08-02 12:48:55 +0100999 ffa_id_t vm_id = HF_VM_ID_OFFSET + i;
David Brazdil7a462ec2019-08-15 12:27:47 +01001000 uint64_t mem_size;
Andrew Scull80871322018-08-06 12:04:09 +01001001 paddr_t secondary_mem_begin;
1002 paddr_t secondary_mem_end;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001003
David Brazdil7a462ec2019-08-15 12:27:47 +01001004 if (vm_id == HF_PRIMARY_VM_ID) {
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001005 continue;
1006 }
1007
Olivier Deprez2a8ee342020-08-03 15:10:44 +02001008 dlog_info("Loading VM id %#x: %s.\n", vm_id,
Karl Meakine8937d92024-03-19 16:04:25 +00001009 manifest_vm->debug_name.data);
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001010
David Brazdil7a462ec2019-08-15 12:27:47 +01001011 mem_size = align_up(manifest_vm->secondary.mem_size, PAGE_SIZE);
Olivier Deprez62d99e32020-01-09 15:58:07 +01001012
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -07001013 if (manifest_vm->is_ffa_partition &&
1014 !manifest->vm[i].is_hyp_loaded) {
Olivier Deprez62d99e32020-01-09 15:58:07 +01001015 secondary_mem_begin =
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -07001016 pa_init(manifest_vm->partition.load_addr);
1017 secondary_mem_end = pa_init(
1018 manifest_vm->partition.load_addr + mem_size);
Olivier Deprez62d99e32020-01-09 15:58:07 +01001019 } else if (!carve_out_mem_range(mem_ranges_available,
1020 params->mem_ranges_count,
1021 mem_size, &secondary_mem_begin,
1022 &secondary_mem_end)) {
Karl Meakine8937d92024-03-19 16:04:25 +00001023 dlog_error("Not enough memory (%lu bytes).\n",
1024 mem_size);
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001025 continue;
1026 }
Andrew Scull80871322018-08-06 12:04:09 +01001027
Manish Pandey2145c212020-05-01 16:04:22 +01001028 if (!load_secondary(stage1_locked, primary_vm_locked,
1029 secondary_mem_begin, secondary_mem_end,
J-Alves77b6f4f2023-03-15 11:34:49 +00001030 manifest_vm, params, cpio, ppool)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +00001031 dlog_error("Unable to load VM.\n");
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +01001032 continue;
1033 }
1034
1035 /* Deny the primary VM access to this memory. */
Andrew Scull3c257452019-11-26 13:32:50 +00001036 if (!vm_unmap(primary_vm_locked, secondary_mem_begin,
1037 secondary_mem_end, ppool)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +00001038 dlog_error(
1039 "Unable to unmap secondary VM from primary "
1040 "VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +00001041 success = false;
1042 break;
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +01001043 }
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001044 }
1045
Andrew Scull3c257452019-11-26 13:32:50 +00001046 vm_unlock(&primary_vm_locked);
1047
1048 if (!success) {
1049 return false;
1050 }
1051
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +01001052 /*
1053 * Add newly reserved areas to update params by looking at the
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001054 * difference between the available ranges from the original params and
1055 * the updated mem_ranges_available. We assume that the number and order
1056 * of available ranges is the same, i.e. we don't remove any ranges
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +01001057 * above only make them smaller.
1058 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001059 return update_reserved_ranges(update, params->mem_ranges,
1060 mem_ranges_available,
1061 params->mem_ranges_count);
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001062}