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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
Daniel Boulby18485942024-10-14 16:23:03 +0100136 int_desc->interrupt_id = interrupt.id;
137 int_desc->priority = (attr >> INT_INFO_ATTR_PRIORITY_SHIFT) & 0xff;
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500138
Daniel Boulby18485942024-10-14 16:23:03 +0100139 int_desc->type = (attr >> INT_INFO_ATTR_TYPE_SHIFT) & 0x3;
140 int_desc->config = (attr >> INT_INFO_ATTR_CONFIG_SHIFT) & 0x1;
141 int_desc->sec_state = (attr >> INT_INFO_ATTR_SEC_STATE_SHIFT) & 0x1;
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500142
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700143 if (interrupt.mpidr_valid) {
Daniel Boulby18485942024-10-14 16:23:03 +0100144 int_desc->mpidr_valid = true;
145 int_desc->mpidr = interrupt.mpidr;
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700146 } else {
Daniel Boulby18485942024-10-14 16:23:03 +0100147 int_desc->mpidr_valid = false;
148 int_desc->mpidr = 0;
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700149 }
150
Daniel Boulby18485942024-10-14 16:23:03 +0100151 int_desc->valid = true;
152 int_desc->enabled = true;
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500153}
154
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100155/**
Andrew Scullae9962e2019-10-03 16:51:16 +0100156 * Performs VM loading activities that are common between the primary and
157 * secondaries.
158 */
Manish Pandeyd34f8892020-06-19 17:41:07 +0100159static bool load_common(struct mm_stage1_locked stage1_locked,
160 struct vm_locked vm_locked,
161 const struct manifest_vm *manifest_vm,
162 struct mpool *ppool)
Andrew Scullae9962e2019-10-03 16:51:16 +0100163{
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500164 struct device_region dev_region;
Raghu Krishnamurthyad38a9c2022-07-20 07:30:36 -0700165 struct interrupt_info interrupt;
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500166 uint32_t k = 0;
167
Manish Pandeyd34f8892020-06-19 17:41:07 +0100168 vm_locked.vm->smc_whitelist = manifest_vm->smc_whitelist;
Olivier Depreza15f2352022-09-26 09:17:24 +0200169 vm_locked.vm->power_management =
170 manifest_vm->partition.power_management;
Andrew Scullae9962e2019-10-03 16:51:16 +0100171
Kathleen Capella422b10b2023-06-30 18:28:27 -0400172 /* Populate array of UUIDs. */
173 for (uint16_t i = 0; i < PARTITION_MAX_UUIDS; i++) {
174 struct ffa_uuid current_uuid = manifest_vm->partition.uuids[i];
175
176 if (ffa_uuid_is_null(&current_uuid)) {
177 break;
178 }
179
180 vm_locked.vm->uuids[i] = current_uuid;
181 }
182
J-Alvescc542042024-07-24 19:13:22 +0100183 /*
184 * Populate the interrupt descriptor for current VM.
185 * They can be enabled in runtime using HF_INTERRUPT_ENABLE.
186 */
Raghu Krishnamurthy641dcd82022-07-19 23:21:20 -0700187 for (uint16_t i = 0; i < PARTITION_MAX_DEVICE_REGIONS; i++) {
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500188 dev_region = manifest_vm->partition.dev_regions[i];
189
190 CHECK(dev_region.interrupt_count <=
Raghu Krishnamurthy641dcd82022-07-19 23:21:20 -0700191 PARTITION_MAX_INTERRUPTS_PER_DEVICE);
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500192
193 for (uint8_t j = 0; j < dev_region.interrupt_count; j++) {
Raghu Krishnamurthy98da1ca2022-10-04 08:59:01 -0700194 struct interrupt_descriptor int_desc = {0};
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500195
196 interrupt = dev_region.interrupts[j];
197 infer_interrupt(interrupt, &int_desc);
198 vm_locked.vm->interrupt_desc[k] = int_desc;
Madhukar Pappireddy938faaf2023-07-31 17:56:55 -0500199 assert(int_desc.enabled);
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500200
201 k++;
202 CHECK(k <= VM_MANIFEST_MAX_INTERRUPTS);
203 }
204 }
J-Alvescc542042024-07-24 19:13:22 +0100205
Madhukar Pappireddy5fc8be12021-08-03 11:42:53 -0500206 dlog_verbose("VM has %d physical interrupts defined in manifest.\n", k);
207
Manish Pandeyd34f8892020-06-19 17:41:07 +0100208 if (manifest_vm->is_ffa_partition) {
Daniel Boulbybaeaf2e2021-12-09 11:42:36 +0000209 vm_locked.vm->ffa_version = manifest_vm->partition.ffa_version;
Manish Pandeyd34f8892020-06-19 17:41:07 +0100210 /* Link rxtx buffers to mailbox */
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700211 if (manifest_vm->partition.rxtx.available) {
Manish Pandeyd34f8892020-06-19 17:41:07 +0100212 if (!link_rxtx_to_mailbox(stage1_locked, vm_locked,
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700213 manifest_vm->partition.rxtx,
Manish Pandeyd34f8892020-06-19 17:41:07 +0100214 ppool)) {
215 dlog_error(
216 "Unable to Link RX/TX buffer with "
217 "mailbox.\n");
218 return false;
219 }
220 }
J-Alvesb37fd082020-10-22 12:29:21 +0100221
Maksims Svecovsb596eab2021-04-27 00:52:27 +0100222 vm_locked.vm->messaging_method =
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700223 manifest_vm->partition.messaging_method;
Manish Pandeyf3be6392020-09-24 17:26:09 +0100224
Madhukar Pappireddy84154052022-06-21 18:30:25 -0500225 vm_locked.vm->ns_interrupts_action =
226 manifest_vm->partition.ns_interrupts_action;
Maksims Svecovs9ddf86a2021-05-06 17:17:21 +0100227
Madhukar Pappireddy5c04a382022-12-28 11:29:26 -0600228 vm_locked.vm->other_s_interrupts_action =
229 manifest_vm->partition.other_s_interrupts_action;
230
Madhukar Pappireddy046dad02022-06-21 18:43:33 -0500231 vm_locked.vm->me_signal_virq =
232 manifest_vm->partition.me_signal_virq;
233
J-Alvesa4730db2021-11-02 10:31:01 +0000234 vm_locked.vm->notifications.enabled =
235 manifest_vm->partition.notification_support;
236
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700237 vm_locked.vm->boot_order = manifest_vm->partition.boot_order;
238
J-Alves7d38f7b2022-04-13 13:22:30 +0100239 vm_locked.vm->boot_info.gp_register_num =
240 manifest_vm->partition.gp_register_num;
241
242 if (manifest_vm->partition.boot_info) {
243 /*
244 * If the partition expects the boot information blob
245 * per the ff-a v1.1 boot protocol, then its address
246 * shall match the partition's load address.
247 */
248 vm_locked.vm->boot_info.blob_addr =
249 ipa_init(manifest_vm->partition.load_addr);
250 }
251
J-Alvesb37fd082020-10-22 12:29:21 +0100252 /* Updating boot list according to boot_order */
Olivier Deprez181074b2023-02-02 14:53:23 +0100253 vcpu_update_boot(vm_get_vcpu(vm_locked.vm, 0));
J-Alvesa0f317d2021-06-09 13:31:59 +0100254
J-Alves09ff9d82021-11-02 11:55:20 +0000255 if (vm_locked_are_notifications_enabled(vm_locked) &&
J-Alvesa4730db2021-11-02 10:31:01 +0000256 !plat_ffa_notifications_bitmap_create_call(
257 vm_locked.vm->id, vm_locked.vm->vcpu_count)) {
258 return false;
J-Alvesa9c7cba2021-08-25 16:26:11 +0100259 }
Manish Pandeyd34f8892020-06-19 17:41:07 +0100260 }
J-Alvesb37fd082020-10-22 12:29:21 +0100261
Fuad Tabba56970712020-01-10 11:20:09 +0000262 /* Initialize architecture-specific features. */
Manish Pandeyd34f8892020-06-19 17:41:07 +0100263 arch_vm_features_set(vm_locked.vm);
Fuad Tabba77a4b012019-11-15 12:13:08 +0000264
Madhukar Pappireddy54680c72020-10-23 15:02:38 -0500265 if (!plat_iommu_attach_peripheral(stage1_locked, vm_locked, manifest_vm,
266 ppool)) {
267 dlog_error("Unable to attach upstream peripheral device\n");
268 return false;
269 }
270
Andrew Scullae9962e2019-10-03 16:51:16 +0100271 return true;
272}
273
274/**
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100275 * Loads the primary VM.
276 */
Andrew Scull72b43c02019-09-18 13:53:45 +0100277static bool load_primary(struct mm_stage1_locked stage1_locked,
Andrew Scullae9962e2019-10-03 16:51:16 +0100278 const struct manifest_vm *manifest_vm,
Andrew Scullb5f49e02019-10-02 13:20:47 +0100279 const struct memiter *cpio,
280 const struct boot_params *params, struct mpool *ppool)
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100281{
Olivier Deprez62d99e32020-01-09 15:58:07 +0100282 paddr_t primary_begin;
283 ipaddr_t primary_entry;
David Brazdile6f83222019-09-23 14:47:37 +0100284 struct vm *vm;
Andrew Scull3c257452019-11-26 13:32:50 +0000285 struct vm_locked vm_locked;
David Brazdile6f83222019-09-23 14:47:37 +0100286 struct vcpu_locked vcpu_locked;
Andrew Scullb5f49e02019-10-02 13:20:47 +0100287 size_t i;
Andrew Scull3c257452019-11-26 13:32:50 +0000288 bool ret;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100289
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700290 if (manifest_vm->is_ffa_partition && !manifest_vm->is_hyp_loaded) {
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700291 primary_begin = pa_init(manifest_vm->partition.load_addr);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100292 primary_entry = ipa_add(ipa_from_pa(primary_begin),
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700293 manifest_vm->partition.ep_offset);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100294 } else {
295 primary_begin =
296 (manifest_vm->primary.boot_address ==
297 MANIFEST_INVALID_ADDRESS)
298 ? layout_primary_begin()
299 : pa_init(manifest_vm->primary.boot_address);
300 primary_entry = ipa_from_pa(primary_begin);
301 }
302
David Brazdil080ee312020-02-25 15:30:30 -0800303 paddr_t primary_end = pa_add(primary_begin, RSIZE_MAX);
Andrew Scull72b43c02019-09-18 13:53:45 +0100304
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800305 /* Primary VM must be a VM */
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700306 CHECK(manifest_vm->partition.run_time_el == EL1);
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800307
Olivier Deprez62d99e32020-01-09 15:58:07 +0100308 /*
309 * Load the kernel if a filename is specified in the VM manifest.
310 * For an FF-A partition, kernel_filename is undefined indicating
311 * the partition package has already been loaded prior to Hafnium
312 * booting.
313 */
314 if (!string_is_empty(&manifest_vm->kernel_filename)) {
315 if (!load_kernel(stage1_locked, primary_begin, primary_end,
Fuad Tabba50469e02020-06-30 15:14:28 +0100316 manifest_vm, cpio, ppool, NULL)) {
Olivier Deprez62d99e32020-01-09 15:58:07 +0100317 dlog_error("Unable to load primary kernel.\n");
318 return false;
319 }
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100320 }
321
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600322 if (!vm_init_next(MAX_CPUS, ppool, &vm, false,
323 manifest_vm->partition.dma_device_count)) {
Andrew Walbran7586e042020-02-18 18:19:26 +0000324 dlog_error("Unable to initialise primary VM.\n");
David Brazdile6f83222019-09-23 14:47:37 +0100325 return false;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100326 }
327
Karl Meakin5e996992024-05-20 11:27:07 +0100328 if (!vm_is_primary(vm)) {
Andrew Walbran7586e042020-02-18 18:19:26 +0000329 dlog_error("Primary VM was not given correct ID.\n");
David Brazdile6f83222019-09-23 14:47:37 +0100330 return false;
331 }
332
Andrew Scull3c257452019-11-26 13:32:50 +0000333 vm_locked = vm_lock(vm);
334
Andrew Scull48929fd2020-01-28 10:39:10 +0000335 if (params->device_mem_ranges_count == 0) {
336 /*
337 * Map 1TB of address space as device memory to, most likely,
338 * make all devices available to the primary VM.
339 *
340 * TODO: remove this once all targets provide valid ranges.
341 */
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800342 dlog_warning(
343 "Device memory not provided, defaulting to 1 TB.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000344
345 if (!vm_identity_map(
346 vm_locked, pa_init(0),
347 pa_init(UINT64_C(1024) * 1024 * 1024 * 1024),
348 MM_MODE_R | MM_MODE_W | MM_MODE_D, ppool, NULL)) {
349 dlog_error(
350 "Unable to initialise address space for "
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800351 "primary VM.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000352 ret = false;
353 goto out;
354 }
David Brazdile6f83222019-09-23 14:47:37 +0100355 }
356
Andrew Scullb5f49e02019-10-02 13:20:47 +0100357 /* Map normal memory as such to permit caching, execution, etc. */
358 for (i = 0; i < params->mem_ranges_count; ++i) {
Andrew Scull3c257452019-11-26 13:32:50 +0000359 if (!vm_identity_map(vm_locked, params->mem_ranges[i].begin,
360 params->mem_ranges[i].end,
361 MM_MODE_R | MM_MODE_W | MM_MODE_X, ppool,
362 NULL)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000363 dlog_error(
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800364 "Unable to initialise memory for primary "
365 "VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000366 ret = false;
367 goto out;
Andrew Scullb5f49e02019-10-02 13:20:47 +0100368 }
369 }
370
Andrew Scull48929fd2020-01-28 10:39:10 +0000371 /* Map device memory as such to prevent execution, speculation etc. */
372 for (i = 0; i < params->device_mem_ranges_count; ++i) {
373 if (!vm_identity_map(
374 vm_locked, params->device_mem_ranges[i].begin,
375 params->device_mem_ranges[i].end,
376 MM_MODE_R | MM_MODE_W | MM_MODE_D, ppool, NULL)) {
377 dlog("Unable to initialise device memory for primary "
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800378 "VM.\n");
Andrew Scull48929fd2020-01-28 10:39:10 +0000379 ret = false;
380 goto out;
381 }
382 }
383
Manish Pandeyd34f8892020-06-19 17:41:07 +0100384 if (!load_common(stage1_locked, vm_locked, manifest_vm, ppool)) {
385 ret = false;
386 goto out;
387 }
388
Andrew Scull3c257452019-11-26 13:32:50 +0000389 if (!vm_unmap_hypervisor(vm_locked, ppool)) {
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800390 dlog_error("Unable to unmap hypervisor from primary VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000391 ret = false;
392 goto out;
David Brazdile6f83222019-09-23 14:47:37 +0100393 }
394
Andrew Scullb1a6d0d2020-01-29 11:25:12 +0000395 if (!plat_iommu_unmap_iommus(vm_locked, ppool)) {
Andrew Scullf6ab9bc2020-02-26 12:56:37 -0800396 dlog_error("Unable to unmap IOMMUs from primary VM.\n");
Andrew Scullb1a6d0d2020-01-29 11:25:12 +0000397 ret = false;
398 goto out;
399 }
400
Karl Meakine8937d92024-03-19 16:04:25 +0000401 dlog_info("Loaded primary VM with %u vCPUs, entry at %#lx.\n",
Andrew Walbran7586e042020-02-18 18:19:26 +0000402 vm->vcpu_count, pa_addr(primary_begin));
403
Olivier Deprez181074b2023-02-02 14:53:23 +0100404 /* Mark the first VM vCPU to be the first booted vCPU. */
405 vcpu_update_boot(vm_get_vcpu(vm, 0));
Olivier Deprezb9adff42021-02-01 12:14:05 +0100406
David Brazdile6f83222019-09-23 14:47:37 +0100407 vcpu_locked = vcpu_lock(vm_get_vcpu(vm, 0));
Olivier Deprez62d99e32020-01-09 15:58:07 +0100408 vcpu_on(vcpu_locked, primary_entry, params->kernel_arg);
David Brazdile6f83222019-09-23 14:47:37 +0100409 vcpu_unlock(&vcpu_locked);
Andrew Scull3c257452019-11-26 13:32:50 +0000410 ret = true;
David Brazdile6f83222019-09-23 14:47:37 +0100411
Andrew Scull3c257452019-11-26 13:32:50 +0000412out:
413 vm_unlock(&vm_locked);
414
415 return ret;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100416}
417
Fuad Tabba50469e02020-06-30 15:14:28 +0100418/**
419 * Loads the secondary VM's FDT.
420 * Stores the total allocated size for the FDT in fdt_allocated_size (if
421 * fdt_allocated_size is not NULL). The allocated size includes additional space
422 * for potential patching.
423 */
424static bool load_secondary_fdt(struct mm_stage1_locked stage1_locked,
425 paddr_t end, size_t fdt_max_size,
426 const struct manifest_vm *manifest_vm,
427 const struct memiter *cpio, struct mpool *ppool,
428 paddr_t *fdt_addr, size_t *fdt_allocated_size)
429{
430 struct memiter fdt;
431 size_t allocated_size;
432
433 CHECK(!string_is_empty(&manifest_vm->secondary.fdt_filename));
434
435 if (!cpio_get_file(cpio, &manifest_vm->secondary.fdt_filename, &fdt)) {
436 dlog_error("Cannot open the secondary VM's FDT.\n");
437 return false;
438 }
439
440 /*
Olivier Deprez701e8bf2022-04-06 18:45:18 +0200441 * Ensure the FDT has one additional page at the end for patching,
Fuad Tabba50469e02020-06-30 15:14:28 +0100442 * and align it to the page boundary.
443 */
444 allocated_size = align_up(memiter_size(&fdt), PAGE_SIZE) + PAGE_SIZE;
445
446 if (allocated_size > fdt_max_size) {
447 dlog_error(
Karl Meakine8937d92024-03-19 16:04:25 +0000448 "FDT allocated space (%zu) is more than the specified "
449 "maximum to use (%zu).\n",
Fuad Tabba50469e02020-06-30 15:14:28 +0100450 allocated_size, fdt_max_size);
451 return false;
452 }
453
454 /* Load the FDT to the end of the VM's allocated memory space. */
455 *fdt_addr = pa_init(pa_addr(pa_sub(end, allocated_size)));
456
Karl Meakine8937d92024-03-19 16:04:25 +0000457 dlog_info("Loading secondary FDT of allocated size %zu at 0x%lx.\n",
Fuad Tabba50469e02020-06-30 15:14:28 +0100458 allocated_size, pa_addr(*fdt_addr));
459
460 if (!copy_to_unmapped(stage1_locked, *fdt_addr, &fdt, ppool)) {
461 dlog_error("Unable to copy FDT.\n");
462 return false;
463 }
464
465 if (fdt_allocated_size) {
466 *fdt_allocated_size = allocated_size;
467 }
468
469 return true;
470}
471
Olivier Deprez035fa152022-03-14 11:19:10 +0100472/**
473 * Convert the manifest memory region attributes to mode consumed by mm layer.
474 */
475static uint32_t memory_region_attributes_to_mode(uint32_t attributes)
476{
477 uint32_t mode = 0U;
478
479 if ((attributes & MANIFEST_REGION_ATTR_READ) != 0U) {
480 mode |= MM_MODE_R;
481 }
482
483 if ((attributes & MANIFEST_REGION_ATTR_WRITE) != 0U) {
484 mode |= MM_MODE_W;
485 }
486
487 if ((attributes & MANIFEST_REGION_ATTR_EXEC) != 0U) {
488 mode |= MM_MODE_X;
489 }
490
491 assert((mode == (MM_MODE_R | MM_MODE_W)) || (mode == MM_MODE_R) ||
492 (mode == (MM_MODE_R | MM_MODE_X)));
493
494 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0U) {
495 mode |= arch_mm_extra_attributes_from_vm(HF_HYPERVISOR_VM_ID);
496 }
497
498 return mode;
499}
500
501/**
502 * Convert the manifest device region attributes to mode consumed by mm layer.
503 */
504static uint32_t device_region_attributes_to_mode(uint32_t attributes)
505{
506 uint32_t mode = 0U;
507
508 if ((attributes & MANIFEST_REGION_ATTR_READ) != 0U) {
509 mode |= MM_MODE_R;
510 }
511
512 if ((attributes & MANIFEST_REGION_ATTR_WRITE) != 0U) {
513 mode |= MM_MODE_W;
514 }
515
516 assert((mode == (MM_MODE_R | MM_MODE_W)) || (mode == MM_MODE_R));
517
518 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0U) {
519 mode |= arch_mm_extra_attributes_from_vm(HF_HYPERVISOR_VM_ID);
520 }
521
522 return mode | MM_MODE_D;
523}
524
Daniel Boulbye6df3452022-07-14 18:14:26 +0100525static bool ffa_map_memory_regions(const struct manifest_vm *manifest_vm,
526 const struct vm_locked vm_locked,
527 const struct vm_locked primary_vm_locked,
J-Alvesd8a1d362023-03-08 11:15:28 +0000528 bool is_el0_partition, struct mpool *ppool)
Daniel Boulbye6df3452022-07-14 18:14:26 +0100529{
530#if LOG_LEVEL >= LOG_LEVEL_WARNING
531 const char *error_string = " region security state ignored for ";
532#endif
533 int j = 0;
534 paddr_t region_begin;
535 paddr_t region_end;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100536 size_t size;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100537 uint32_t map_mode;
538 uint32_t attributes;
539
540 /* Map memory-regions */
541 while (j < manifest_vm->partition.mem_region_count) {
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500542 struct memory_region mem_region;
543
544 mem_region = manifest_vm->partition.mem_regions[j];
545 size = mem_region.page_count * PAGE_SIZE;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100546 /*
J-Alvesd8a1d362023-03-08 11:15:28 +0000547 * Identity map memory region for both case,
548 * VA(S-EL0) or IPA(S-EL1).
Daniel Boulbye6df3452022-07-14 18:14:26 +0100549 */
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500550 region_begin = pa_init(mem_region.base_address);
J-Alvesd8a1d362023-03-08 11:15:28 +0000551 region_end = pa_add(region_begin, size);
Daniel Boulbye6df3452022-07-14 18:14:26 +0100552
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500553 attributes = mem_region.attributes;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100554 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0) {
J-Alves661e1b72023-08-02 13:39:40 +0100555 if (ffa_is_vm_id(vm_locked.vm->id)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100556 dlog_warning("Memory%sVMs\n", error_string);
557 attributes &= ~MANIFEST_REGION_ATTR_SECURITY;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100558 }
559 }
560
561 map_mode = memory_region_attributes_to_mode(attributes);
562
563 if (is_el0_partition) {
564 map_mode |= MM_MODE_USER | MM_MODE_NG;
565 }
566
567 if (!vm_identity_map(vm_locked, region_begin, region_end,
568 map_mode, ppool, NULL)) {
569 dlog_error(
570 "Unable to map secondary VM "
571 "memory-region.\n");
572 return false;
573 }
574
Madhukar Pappireddy0e57d3d2023-10-11 15:49:05 -0500575 /*
576 * Enforce static DMA isolation through stage 2 address
577 * translation.
578 * Only the DMA device that is specified as part of this memory
579 * region node in the partition manifest will be granted access
580 * to the memory region.
581 */
582 if (mem_region.dma_prop.stream_count > 0 &&
583 !vm_iommu_mm_identity_map(
584 vm_locked, region_begin, region_end, map_mode,
585 ppool, NULL, mem_region.dma_prop.dma_device_id)) {
586 dlog_error(
587 "Unable to map memory-region in the page "
588 "tables of DMA device.\n");
589 return false;
590 }
591
Daniel Boulbye6df3452022-07-14 18:14:26 +0100592 /* Deny the primary VM access to this memory */
593 if (!vm_unmap(primary_vm_locked, region_begin, region_end,
594 ppool)) {
595 dlog_error(
596 "Unable to unmap secondary VM memory-"
597 "region from primary VM.\n");
598 return false;
599 }
600
Karl Meakine8937d92024-03-19 16:04:25 +0000601 dlog_verbose("Memory region %#lx - %#lx allocated.\n",
602 pa_addr(region_begin), pa_addr(region_end));
Daniel Boulbye6df3452022-07-14 18:14:26 +0100603
604 j++;
605 }
606
607 /* Map device-regions */
608 j = 0;
609 while (j < manifest_vm->partition.dev_region_count) {
610 region_begin = pa_init(
611 manifest_vm->partition.dev_regions[j].base_address);
612 size = manifest_vm->partition.dev_regions[j].page_count *
613 PAGE_SIZE;
614 region_end = pa_add(region_begin, size);
615
616 attributes = manifest_vm->partition.dev_regions[j].attributes;
617 if ((attributes & MANIFEST_REGION_ATTR_SECURITY) != 0) {
J-Alves661e1b72023-08-02 13:39:40 +0100618 if (ffa_is_vm_id(vm_locked.vm->id)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100619 dlog_warning("Device%sVMs\n", error_string);
620 attributes &= ~MANIFEST_REGION_ATTR_SECURITY;
Daniel Boulbye6df3452022-07-14 18:14:26 +0100621 }
622 }
623
624 map_mode = device_region_attributes_to_mode(attributes);
625 if (is_el0_partition) {
626 map_mode |= MM_MODE_USER | MM_MODE_NG;
627 }
628
629 if (!vm_identity_map(vm_locked, region_begin, region_end,
630 map_mode, ppool, NULL)) {
631 dlog_error(
632 "Unable to map secondary VM "
633 "device-region.\n");
634 return false;
635 }
636 /* Deny primary VM access to this region */
637 if (!vm_unmap(primary_vm_locked, region_begin, region_end,
638 ppool)) {
639 dlog_error(
640 "Unable to unmap secondary VM device-"
641 "region from primary VM.\n");
642 return false;
643 }
644 j++;
645 }
646 return true;
647}
648
Andrew Scull72b43c02019-09-18 13:53:45 +0100649/*
650 * Loads a secondary VM.
651 */
652static bool load_secondary(struct mm_stage1_locked stage1_locked,
Manish Pandey2145c212020-05-01 16:04:22 +0100653 struct vm_locked primary_vm_locked,
Andrew Scull72b43c02019-09-18 13:53:45 +0100654 paddr_t mem_begin, paddr_t mem_end,
655 const struct manifest_vm *manifest_vm,
J-Alves77b6f4f2023-03-15 11:34:49 +0000656 const struct boot_params *boot_params,
Andrew Scull72b43c02019-09-18 13:53:45 +0100657 const struct memiter *cpio, struct mpool *ppool)
658{
659 struct vm *vm;
Andrew Scull3c257452019-11-26 13:32:50 +0000660 struct vm_locked vm_locked;
Max Shvetsov40108e72020-08-27 12:39:50 +0100661 struct vcpu_locked vcpu_locked;
Andrew Scull72b43c02019-09-18 13:53:45 +0100662 struct vcpu *vcpu;
663 ipaddr_t secondary_entry;
Andrew Scull3c257452019-11-26 13:32:50 +0000664 bool ret;
Fuad Tabba50469e02020-06-30 15:14:28 +0100665 paddr_t fdt_addr;
666 bool has_fdt;
667 size_t kernel_size = 0;
668 const size_t mem_size = pa_difference(mem_begin, mem_end);
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800669 uint32_t map_mode;
Daniel Boulby874d5432023-04-27 12:40:24 +0100670 bool is_el0_partition = manifest_vm->partition.run_time_el == S_EL0 ||
671 manifest_vm->partition.run_time_el == EL0;
Jens Wiklanderb697ad02022-11-04 10:15:03 +0100672 size_t n;
Andrew Scull72b43c02019-09-18 13:53:45 +0100673
Olivier Deprez62d99e32020-01-09 15:58:07 +0100674 /*
675 * Load the kernel if a filename is specified in the VM manifest.
676 * For an FF-A partition, kernel_filename is undefined indicating
677 * the partition package has already been loaded prior to Hafnium
678 * booting.
679 */
680 if (!string_is_empty(&manifest_vm->kernel_filename)) {
681 if (!load_kernel(stage1_locked, mem_begin, mem_end, manifest_vm,
Fuad Tabba50469e02020-06-30 15:14:28 +0100682 cpio, ppool, &kernel_size)) {
Olivier Deprez62d99e32020-01-09 15:58:07 +0100683 dlog_error("Unable to load kernel.\n");
684 return false;
685 }
Andrew Scull72b43c02019-09-18 13:53:45 +0100686 }
687
Fuad Tabba50469e02020-06-30 15:14:28 +0100688 has_fdt = !string_is_empty(&manifest_vm->secondary.fdt_filename);
689 if (has_fdt) {
690 /*
691 * Ensure that the FDT does not overwrite the kernel or overlap
692 * its page, for the FDT to start at a page boundary.
693 */
694 const size_t fdt_max_size =
695 mem_size - align_up(kernel_size, PAGE_SIZE);
696
697 size_t fdt_allocated_size;
698
699 if (!load_secondary_fdt(stage1_locked, mem_end, fdt_max_size,
700 manifest_vm, cpio, ppool, &fdt_addr,
701 &fdt_allocated_size)) {
702 dlog_error("Unable to load FDT.\n");
703 return false;
704 }
705
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700706 if (manifest_vm->is_ffa_partition) {
707 plat_ffa_parse_partition_manifest(
708 stage1_locked, fdt_addr, fdt_allocated_size,
J-Alves77b6f4f2023-03-15 11:34:49 +0000709 manifest_vm, boot_params, ppool);
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -0700710 }
711
Fuad Tabba50469e02020-06-30 15:14:28 +0100712 if (!fdt_patch_mem(stage1_locked, fdt_addr, fdt_allocated_size,
713 mem_begin, mem_end, ppool)) {
714 dlog_error("Unable to patch FDT.\n");
715 return false;
716 }
717 }
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800718 /*
719 * An S-EL0 partition must contain only 1 vCPU (UP migratable) per the
720 * FF-A 1.0 spec.
721 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100722 CHECK(!is_el0_partition || manifest_vm->secondary.vcpu_count == 1);
Fuad Tabba50469e02020-06-30 15:14:28 +0100723
Raghu Krishnamurthycd1eceb2021-01-04 12:20:48 -0800724 if (!vm_init_next(manifest_vm->secondary.vcpu_count, ppool, &vm,
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600725 is_el0_partition,
726 manifest_vm->partition.dma_device_count)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000727 dlog_error("Unable to initialise VM.\n");
Andrew Scull72b43c02019-09-18 13:53:45 +0100728 return false;
729 }
730
Andrew Scull3c257452019-11-26 13:32:50 +0000731 vm_locked = vm_lock(vm);
732
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800733 /*
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700734 * Grant the VM access to the memory. For VM's we mark all memory in
735 * stage-2 tables as RWX and the VM can control permissions using
736 * stage-1 translations. For S-EL0 partitions, hafnium maps the entire
737 * region of memory for the partition as RX. The partition is then
738 * expected to perform its owns relocations and call the FFA_MEM_PERM_*
739 * API's to change permissions on its image layout.
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800740 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100741 if (is_el0_partition) {
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700742 map_mode = MM_MODE_R | MM_MODE_X | MM_MODE_USER | MM_MODE_NG;
743 } else {
744 map_mode = MM_MODE_R | MM_MODE_W | MM_MODE_X;
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800745 }
Raghu Krishnamurthy2b801692021-07-18 17:46:43 -0700746
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800747 if (!vm_identity_map(vm_locked, mem_begin, mem_end, map_mode, ppool,
Andrew Scull3c257452019-11-26 13:32:50 +0000748 &secondary_entry)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000749 dlog_error("Unable to initialise memory.\n");
Andrew Scull3c257452019-11-26 13:32:50 +0000750 ret = false;
751 goto out;
Andrew Scull72b43c02019-09-18 13:53:45 +0100752 }
753
Olivier Deprez62d99e32020-01-09 15:58:07 +0100754 if (manifest_vm->is_ffa_partition) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100755 if (!ffa_map_memory_regions(manifest_vm, vm_locked,
J-Alvesd8a1d362023-03-08 11:15:28 +0000756 primary_vm_locked, is_el0_partition,
757 ppool)) {
Daniel Boulbye6df3452022-07-14 18:14:26 +0100758 ret = false;
759 goto out;
Manish Pandey2145c212020-05-01 16:04:22 +0100760 }
761
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -0700762 secondary_entry = ipa_add(secondary_entry,
763 manifest_vm->partition.ep_offset);
Olivier Deprez62d99e32020-01-09 15:58:07 +0100764 }
765
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800766 /*
767 * Map hypervisor into the VM's page table. The hypervisor pages will
768 * not be accessible from EL0 since it will not be marked for user
769 * access.
770 * TODO: Map only the exception vectors and data that exception vectors
771 * require and not the entire hypervisor. This helps with speculative
772 * side-channel attacks.
773 */
Daniel Boulbye6df3452022-07-14 18:14:26 +0100774 if (is_el0_partition) {
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800775 CHECK(vm_identity_map(vm_locked, layout_text_begin(),
776 layout_text_end(), MM_MODE_X, ppool,
777 NULL));
778
779 CHECK(vm_identity_map(vm_locked, layout_rodata_begin(),
780 layout_rodata_end(), MM_MODE_R, ppool,
781 NULL));
782
783 CHECK(vm_identity_map(vm_locked, layout_data_begin(),
784 layout_data_end(), MM_MODE_R | MM_MODE_W,
785 ppool, NULL));
Maksims Svecovs134b8f92022-03-04 15:14:09 +0000786
787 CHECK(arch_stack_mm_init(mm_lock_ptable_unsafe(&vm->ptable),
788 ppool));
789
Raghu Krishnamurthyd3ab8c32021-02-10 19:11:30 -0800790 plat_console_mm_init(mm_lock_ptable_unsafe(&vm->ptable), ppool);
791 }
792
Manish Pandeyd34f8892020-06-19 17:41:07 +0100793 if (!load_common(stage1_locked, vm_locked, manifest_vm, ppool)) {
794 ret = false;
795 goto out;
796 }
797
Karl Meakine8937d92024-03-19 16:04:25 +0000798 dlog_info("Loaded with %u vCPUs, entry at %#lx.\n",
Manish Pandey2145c212020-05-01 16:04:22 +0100799 manifest_vm->secondary.vcpu_count, pa_addr(mem_begin));
800
Andrew Scull72b43c02019-09-18 13:53:45 +0100801 vcpu = vm_get_vcpu(vm, 0);
Fuad Tabba50469e02020-06-30 15:14:28 +0100802
Max Shvetsov40108e72020-08-27 12:39:50 +0100803 vcpu_locked = vcpu_lock(vcpu);
Madhukar Pappireddy046dad02022-06-21 18:43:33 -0500804
Fuad Tabba50469e02020-06-30 15:14:28 +0100805 if (has_fdt) {
Max Shvetsov40108e72020-08-27 12:39:50 +0100806 vcpu_secondary_reset_and_start(vcpu_locked, secondary_entry,
Fuad Tabba50469e02020-06-30 15:14:28 +0100807 pa_addr(fdt_addr));
808 } else {
809 /*
810 * Without an FDT, secondary VMs expect the memory size to be
811 * passed in register x0, which is what
812 * vcpu_secondary_reset_and_start does in this case.
813 */
Max Shvetsov40108e72020-08-27 12:39:50 +0100814 vcpu_secondary_reset_and_start(vcpu_locked, secondary_entry,
815 mem_size);
Fuad Tabba50469e02020-06-30 15:14:28 +0100816 }
817
Max Shvetsov40108e72020-08-27 12:39:50 +0100818 vcpu_unlock(&vcpu_locked);
819
Jens Wiklanderb697ad02022-11-04 10:15:03 +0100820 /*
821 * For all vCPUs,
822 * in a VM: enable the notification pending virtual interrupt if
823 * requested in the manifest.
824 * in a SP: enable the NPI and managed exit virtual interrupts if
825 * requested in the manifest. For a S-EL0 partition, enable
826 * the virtual interrupts IDs matching the secure physical
827 * interrupt IDs declared in device regions.
828 */
829 for (n = 0; n < manifest_vm->secondary.vcpu_count; n++) {
830 vcpu = vm_get_vcpu(vm, n);
831 vcpu_locked = vcpu_lock(vcpu);
832 plat_ffa_enable_virtual_interrupts(vcpu_locked, vm_locked);
833 vcpu_unlock(&vcpu_locked);
834 }
835
Andrew Scull3c257452019-11-26 13:32:50 +0000836 ret = true;
Andrew Scull72b43c02019-09-18 13:53:45 +0100837
Andrew Scull3c257452019-11-26 13:32:50 +0000838out:
839 vm_unlock(&vm_locked);
840
841 return ret;
Andrew Scull72b43c02019-09-18 13:53:45 +0100842}
843
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100844/**
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100845 * Try to find a memory range of the given size within the given ranges, and
846 * remove it from them. Return true on success, or false if no large enough
847 * contiguous range is found.
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100848 */
Hong-Seok Kim09648362019-05-23 15:47:11 +0900849static bool carve_out_mem_range(struct mem_range *mem_ranges,
850 size_t mem_ranges_count, uint64_t size_to_find,
851 paddr_t *found_begin, paddr_t *found_end)
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100852{
853 size_t i;
854
Wedson Almeida Filho81568c42019-01-04 13:33:02 +0000855 /*
856 * TODO(b/116191358): Consider being cleverer about how we pack VMs
857 * together, with a non-greedy algorithm.
858 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100859 for (i = 0; i < mem_ranges_count; ++i) {
860 if (size_to_find <=
Andrew Walbran2cb43392019-04-17 12:52:45 +0100861 pa_difference(mem_ranges[i].begin, mem_ranges[i].end)) {
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +0100862 /*
863 * This range is big enough, take some of it from the
864 * end and reduce its size accordingly.
865 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100866 *found_end = mem_ranges[i].end;
867 *found_begin = pa_init(pa_addr(mem_ranges[i].end) -
868 size_to_find);
869 mem_ranges[i].end = *found_begin;
870 return true;
871 }
872 }
873 return false;
874}
875
876/**
877 * Given arrays of memory ranges before and after memory was removed for
878 * secondary VMs, add the difference to the reserved ranges of the given update.
879 * Return true on success, or false if there would be more than MAX_MEM_RANGES
880 * reserved ranges after adding the new ones.
881 * `before` and `after` must be arrays of exactly `mem_ranges_count` elements.
882 */
Hong-Seok Kim09648362019-05-23 15:47:11 +0900883static bool update_reserved_ranges(struct boot_params_update *update,
884 const struct mem_range *before,
885 const struct mem_range *after,
886 size_t mem_ranges_count)
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100887{
888 size_t i;
889
890 for (i = 0; i < mem_ranges_count; ++i) {
891 if (pa_addr(after[i].begin) > pa_addr(before[i].begin)) {
892 if (update->reserved_ranges_count >= MAX_MEM_RANGES) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000893 dlog_error(
894 "Too many reserved ranges after "
895 "loading secondary VMs.\n");
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100896 return false;
897 }
898 update->reserved_ranges[update->reserved_ranges_count]
899 .begin = before[i].begin;
900 update->reserved_ranges[update->reserved_ranges_count]
901 .end = after[i].begin;
902 update->reserved_ranges_count++;
903 }
904 if (pa_addr(after[i].end) < pa_addr(before[i].end)) {
905 if (update->reserved_ranges_count >= MAX_MEM_RANGES) {
Andrew Walbran17eebf92020-02-05 16:35:49 +0000906 dlog_error(
907 "Too many reserved ranges after "
908 "loading secondary VMs.\n");
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100909 return false;
910 }
911 update->reserved_ranges[update->reserved_ranges_count]
912 .begin = after[i].end;
913 update->reserved_ranges[update->reserved_ranges_count]
914 .end = before[i].end;
915 update->reserved_ranges_count++;
916 }
917 }
918
919 return true;
920}
921
Olivier Deprez05046922023-03-09 15:48:40 +0100922static bool init_other_world_vm(const struct boot_params *params,
923 struct mpool *ppool)
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100924{
Olivier Deprez96a2a262020-06-11 17:21:38 +0200925 struct vm *other_world_vm;
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100926 size_t i;
Andrew Scull72b43c02019-09-18 13:53:45 +0100927
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100928 /*
Olivier Deprez96a2a262020-06-11 17:21:38 +0200929 * Initialise the dummy VM which represents the opposite world:
930 * -TrustZone (or the SPMC) when running the Hypervisor
931 * -the Hypervisor when running TZ/SPMC
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100932 */
Madhukar Pappireddy070f49e2024-01-12 13:02:27 -0600933 other_world_vm = vm_init(HF_OTHER_WORLD_ID, MAX_CPUS, ppool, false, 0);
Olivier Deprez96a2a262020-06-11 17:21:38 +0200934 CHECK(other_world_vm != NULL);
935
936 for (i = 0; i < MAX_CPUS; i++) {
937 struct vcpu *vcpu = vm_get_vcpu(other_world_vm, i);
938 struct cpu *cpu = cpu_find_index(i);
939
940 vcpu->cpu = cpu;
941 }
Andrew Walbran9daa57e2019-09-27 13:33:20 +0100942
Olivier Deprez05046922023-03-09 15:48:40 +0100943 return arch_other_world_vm_init(other_world_vm, params, ppool);
Olivier Deprez112d2b52020-09-30 07:39:23 +0200944}
945
946/*
947 * Loads alls VMs from the manifest.
948 */
949bool load_vms(struct mm_stage1_locked stage1_locked,
950 const struct manifest *manifest, const struct memiter *cpio,
951 const struct boot_params *params,
952 struct boot_params_update *update, struct mpool *ppool)
953{
954 struct vm *primary;
955 struct mem_range mem_ranges_available[MAX_MEM_RANGES];
956 struct vm_locked primary_vm_locked;
957 size_t i;
958 bool success = true;
959
Andrew Walbranf8716782020-10-29 17:07:07 +0000960 /**
961 * Only try to load the primary VM if it is supposed to be in this
962 * world.
963 */
964 if (vm_id_is_current_world(HF_PRIMARY_VM_ID)) {
965 if (!load_primary(stage1_locked,
966 &manifest->vm[HF_PRIMARY_VM_INDEX], cpio,
967 params, ppool)) {
968 dlog_error("Unable to load primary VM.\n");
969 return false;
970 }
Olivier Deprez112d2b52020-09-30 07:39:23 +0200971 }
972
Olivier Deprez05046922023-03-09 15:48:40 +0100973 if (!init_other_world_vm(params, ppool)) {
Olivier Deprez112d2b52020-09-30 07:39:23 +0200974 return false;
975 }
976
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100977 static_assert(
978 sizeof(mem_ranges_available) == sizeof(params->mem_ranges),
979 "mem_range arrays must be the same size for memcpy.");
980 static_assert(sizeof(mem_ranges_available) < 500,
981 "This will use too much stack, either make "
982 "MAX_MEM_RANGES smaller or change this.");
Andrew Sculla1aa2ba2019-04-05 11:49:02 +0100983 memcpy_s(mem_ranges_available, sizeof(mem_ranges_available),
984 params->mem_ranges, sizeof(params->mem_ranges));
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +0100985
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100986 /* Round the last addresses down to the page size. */
987 for (i = 0; i < params->mem_ranges_count; ++i) {
Alfredo Mazzinghieb1997c2019-02-07 18:00:01 +0000988 mem_ranges_available[i].end = pa_init(align_down(
989 pa_addr(mem_ranges_available[i].end), PAGE_SIZE));
Andrew Walbran34ce72e2018-09-13 16:47:44 +0100990 }
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +0100991
Andrew Scull3c257452019-11-26 13:32:50 +0000992 primary = vm_find(HF_PRIMARY_VM_ID);
993 primary_vm_locked = vm_lock(primary);
994
David Brazdil0251b942019-09-10 15:59:50 +0100995 for (i = 0; i < manifest->vm_count; ++i) {
David Brazdil0dbb41f2019-09-09 18:03:35 +0100996 const struct manifest_vm *manifest_vm = &manifest->vm[i];
J-Alves19e20cf2023-08-02 12:48:55 +0100997 ffa_id_t vm_id = HF_VM_ID_OFFSET + i;
David Brazdil7a462ec2019-08-15 12:27:47 +0100998 uint64_t mem_size;
Andrew Scull80871322018-08-06 12:04:09 +0100999 paddr_t secondary_mem_begin;
1000 paddr_t secondary_mem_end;
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001001
David Brazdil7a462ec2019-08-15 12:27:47 +01001002 if (vm_id == HF_PRIMARY_VM_ID) {
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001003 continue;
1004 }
1005
Olivier Deprez2a8ee342020-08-03 15:10:44 +02001006 dlog_info("Loading VM id %#x: %s.\n", vm_id,
Karl Meakine8937d92024-03-19 16:04:25 +00001007 manifest_vm->debug_name.data);
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001008
David Brazdil7a462ec2019-08-15 12:27:47 +01001009 mem_size = align_up(manifest_vm->secondary.mem_size, PAGE_SIZE);
Olivier Deprez62d99e32020-01-09 15:58:07 +01001010
Raghu Krishnamurthyb49549e2021-07-02 08:27:38 -07001011 if (manifest_vm->is_ffa_partition &&
1012 !manifest->vm[i].is_hyp_loaded) {
Olivier Deprez62d99e32020-01-09 15:58:07 +01001013 secondary_mem_begin =
Raghu Krishnamurthy8c250a92021-07-02 12:16:42 -07001014 pa_init(manifest_vm->partition.load_addr);
1015 secondary_mem_end = pa_init(
1016 manifest_vm->partition.load_addr + mem_size);
Olivier Deprez62d99e32020-01-09 15:58:07 +01001017 } else if (!carve_out_mem_range(mem_ranges_available,
1018 params->mem_ranges_count,
1019 mem_size, &secondary_mem_begin,
1020 &secondary_mem_end)) {
Karl Meakine8937d92024-03-19 16:04:25 +00001021 dlog_error("Not enough memory (%lu bytes).\n",
1022 mem_size);
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001023 continue;
1024 }
Andrew Scull80871322018-08-06 12:04:09 +01001025
Manish Pandey2145c212020-05-01 16:04:22 +01001026 if (!load_secondary(stage1_locked, primary_vm_locked,
1027 secondary_mem_begin, secondary_mem_end,
J-Alves77b6f4f2023-03-15 11:34:49 +00001028 manifest_vm, params, cpio, ppool)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +00001029 dlog_error("Unable to load VM.\n");
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +01001030 continue;
1031 }
1032
1033 /* Deny the primary VM access to this memory. */
Andrew Scull3c257452019-11-26 13:32:50 +00001034 if (!vm_unmap(primary_vm_locked, secondary_mem_begin,
1035 secondary_mem_end, ppool)) {
Andrew Walbran17eebf92020-02-05 16:35:49 +00001036 dlog_error(
1037 "Unable to unmap secondary VM from primary "
1038 "VM.\n");
Andrew Scull3c257452019-11-26 13:32:50 +00001039 success = false;
1040 break;
Wedson Almeida Filho84a30a02018-07-23 20:05:05 +01001041 }
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001042 }
1043
Andrew Scull3c257452019-11-26 13:32:50 +00001044 vm_unlock(&primary_vm_locked);
1045
1046 if (!success) {
1047 return false;
1048 }
1049
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +01001050 /*
1051 * Add newly reserved areas to update params by looking at the
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001052 * difference between the available ranges from the original params and
1053 * the updated mem_ranges_available. We assume that the number and order
1054 * of available ranges is the same, i.e. we don't remove any ranges
Wedson Almeida Filhob2c159e2018-10-25 13:27:47 +01001055 * above only make them smaller.
1056 */
Andrew Walbran34ce72e2018-09-13 16:47:44 +01001057 return update_reserved_ranges(update, params->mem_ranges,
1058 mem_ranges_available,
1059 params->mem_ranges_count);
Wedson Almeida Filhofdf4afc2018-07-19 15:45:21 +01001060}