1 // Support for generating ACPI tables (on emulators)
2 // DO NOT ADD NEW FEATURES HERE. (See paravirt.c / biostables.c instead.)
3 //
4 // Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
5 // Copyright (C) 2006 Fabrice Bellard
6 //
7 // This file may be distributed under the terms of the GNU LGPLv3 license.
8
9 #include "byteorder.h" // cpu_to_le16
10 #include "config.h" // CONFIG_*
11 #include "dev-q35.h"
12 #include "dev-piix.h"
13 #include "hw/pcidevice.h" // pci_find_init_device
14 #include "hw/pci_ids.h" // PCI_VENDOR_ID_INTEL
15 #include "hw/pci_regs.h" // PCI_INTERRUPT_LINE
16 #include "malloc.h" // free
17 #include "output.h" // dprintf
18 #include "paravirt.h" // RamSize
19 #include "romfile.h" // romfile_loadint
20 #include "std/acpi.h" // struct rsdp_descriptor
21 #include "string.h" // memset
22 #include "util.h" // MaxCountCPUs
23 #include "x86.h" // readl
24
25 #include "fw/acpi-dsdt.hex"
26
27 static void
build_header(struct acpi_table_header * h,u32 sig,int len,u8 rev)28 build_header(struct acpi_table_header *h, u32 sig, int len, u8 rev)
29 {
30 h->signature = cpu_to_le32(sig);
31 h->length = cpu_to_le32(len);
32 h->revision = rev;
33 memcpy(h->oem_id, BUILD_APPNAME6, 6);
34 memcpy(h->oem_table_id, BUILD_APPNAME4, 4);
35 memcpy(h->oem_table_id + 4, (void*)&sig, 4);
36 h->oem_revision = cpu_to_le32(1);
37 memcpy(h->asl_compiler_id, BUILD_APPNAME4, 4);
38 h->asl_compiler_revision = cpu_to_le32(1);
39 h->checksum -= checksum(h, len);
40 }
41
piix4_fadt_setup(struct pci_device * pci,void * arg)42 static void piix4_fadt_setup(struct pci_device *pci, void *arg)
43 {
44 struct fadt_descriptor_rev1 *fadt = arg;
45
46 fadt->model = 1;
47 fadt->reserved1 = 0;
48 fadt->sci_int = cpu_to_le16(PIIX_PM_INTRRUPT);
49 fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
50 fadt->acpi_enable = PIIX_ACPI_ENABLE;
51 fadt->acpi_disable = PIIX_ACPI_DISABLE;
52 fadt->pm1a_evt_blk = cpu_to_le32(acpi_pm_base);
53 fadt->pm1a_cnt_blk = cpu_to_le32(acpi_pm_base + 0x04);
54 fadt->pm_tmr_blk = cpu_to_le32(acpi_pm_base + 0x08);
55 fadt->gpe0_blk = cpu_to_le32(PIIX_GPE0_BLK);
56 fadt->pm1_evt_len = 4;
57 fadt->pm1_cnt_len = 2;
58 fadt->pm_tmr_len = 4;
59 fadt->gpe0_blk_len = PIIX_GPE0_BLK_LEN;
60 fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
61 fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
62 fadt->flags = cpu_to_le32(ACPI_FADT_F_WBINVD |
63 ACPI_FADT_F_PROC_C1 |
64 ACPI_FADT_F_SLP_BUTTON |
65 ACPI_FADT_F_RTC_S4 |
66 ACPI_FADT_F_USE_PLATFORM_CLOCK);
67 }
68
69 /* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_LPC */
ich9_lpc_fadt_setup(struct pci_device * dev,void * arg)70 static void ich9_lpc_fadt_setup(struct pci_device *dev, void *arg)
71 {
72 struct fadt_descriptor_rev1 *fadt = arg;
73
74 fadt->model = 1;
75 fadt->reserved1 = 0;
76 fadt->sci_int = cpu_to_le16(9);
77 fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
78 fadt->acpi_enable = ICH9_ACPI_ENABLE;
79 fadt->acpi_disable = ICH9_ACPI_DISABLE;
80 fadt->pm1a_evt_blk = cpu_to_le32(acpi_pm_base);
81 fadt->pm1a_cnt_blk = cpu_to_le32(acpi_pm_base + 0x04);
82 fadt->pm_tmr_blk = cpu_to_le32(acpi_pm_base + 0x08);
83 fadt->gpe0_blk = cpu_to_le32(acpi_pm_base + ICH9_PMIO_GPE0_STS);
84 fadt->pm1_evt_len = 4;
85 fadt->pm1_cnt_len = 2;
86 fadt->pm_tmr_len = 4;
87 fadt->gpe0_blk_len = ICH9_PMIO_GPE0_BLK_LEN;
88 fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
89 fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
90 fadt->flags = cpu_to_le32(ACPI_FADT_F_WBINVD |
91 ACPI_FADT_F_PROC_C1 |
92 ACPI_FADT_F_SLP_BUTTON |
93 ACPI_FADT_F_RTC_S4 |
94 ACPI_FADT_F_USE_PLATFORM_CLOCK);
95 }
96
97 static const struct pci_device_id fadt_init_tbl[] = {
98 /* PIIX4 Power Management device (for ACPI) */
99 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3,
100 piix4_fadt_setup),
101 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_LPC,
102 ich9_lpc_fadt_setup),
103 PCI_DEVICE_END
104 };
105
fill_dsdt(struct fadt_descriptor_rev1 * fadt,void * dsdt)106 static void fill_dsdt(struct fadt_descriptor_rev1 *fadt, void *dsdt)
107 {
108 if (fadt->dsdt) {
109 free((void *)le32_to_cpu(fadt->dsdt));
110 }
111 fadt->dsdt = cpu_to_le32((u32)dsdt);
112 fadt->checksum -= checksum(fadt, sizeof(*fadt));
113 dprintf(1, "ACPI DSDT=%p\n", dsdt);
114 }
115
116 static void *
build_fadt(struct pci_device * pci)117 build_fadt(struct pci_device *pci)
118 {
119 struct fadt_descriptor_rev1 *fadt = malloc_high(sizeof(*fadt));
120 struct facs_descriptor_rev1 *facs = memalign_high(64, sizeof(*facs));
121
122 if (!fadt || !facs) {
123 warn_noalloc();
124 return NULL;
125 }
126
127 /* FACS */
128 memset(facs, 0, sizeof(*facs));
129 facs->signature = cpu_to_le32(FACS_SIGNATURE);
130 facs->length = cpu_to_le32(sizeof(*facs));
131
132 /* FADT */
133 memset(fadt, 0, sizeof(*fadt));
134 fadt->firmware_ctrl = cpu_to_le32((u32)facs);
135 fadt->dsdt = 0; /* dsdt will be filled later in acpi_setup()
136 by fill_dsdt() */
137 pci_init_device(fadt_init_tbl, pci, fadt);
138
139 build_header((void*)fadt, FACP_SIGNATURE, sizeof(*fadt), 1);
140
141 return fadt;
142 }
143
144 static void*
build_madt(void)145 build_madt(void)
146 {
147 int madt_size = (sizeof(struct multiple_apic_table)
148 + sizeof(struct madt_processor_apic) * MaxCountCPUs
149 + sizeof(struct madt_io_apic)
150 + sizeof(struct madt_intsrcovr) * 16
151 + sizeof(struct madt_local_nmi));
152
153 struct multiple_apic_table *madt = malloc_high(madt_size);
154 if (!madt) {
155 warn_noalloc();
156 return NULL;
157 }
158 memset(madt, 0, madt_size);
159 madt->local_apic_address = cpu_to_le32(BUILD_APIC_ADDR);
160 madt->flags = cpu_to_le32(1);
161 struct madt_processor_apic *apic = (void*)&madt[1];
162 int i;
163 for (i=0; i<MaxCountCPUs; i++) {
164 apic->type = APIC_PROCESSOR;
165 apic->length = sizeof(*apic);
166 apic->processor_id = i;
167 apic->local_apic_id = i;
168 if (apic_id_is_present(apic->local_apic_id))
169 apic->flags = cpu_to_le32(1);
170 else
171 apic->flags = cpu_to_le32(0);
172 apic++;
173 }
174 struct madt_io_apic *io_apic = (void*)apic;
175 io_apic->type = APIC_IO;
176 io_apic->length = sizeof(*io_apic);
177 io_apic->io_apic_id = BUILD_IOAPIC_ID;
178 io_apic->address = cpu_to_le32(BUILD_IOAPIC_ADDR);
179 io_apic->interrupt = cpu_to_le32(0);
180
181 struct madt_intsrcovr *intsrcovr = (void*)&io_apic[1];
182 if (romfile_loadint("etc/irq0-override", 0)) {
183 memset(intsrcovr, 0, sizeof(*intsrcovr));
184 intsrcovr->type = APIC_XRUPT_OVERRIDE;
185 intsrcovr->length = sizeof(*intsrcovr);
186 intsrcovr->source = 0;
187 intsrcovr->gsi = cpu_to_le32(2);
188 intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
189 intsrcovr++;
190 }
191 for (i = 1; i < 16; i++) {
192 if (!(BUILD_PCI_IRQS & (1 << i)))
193 /* No need for a INT source override structure. */
194 continue;
195 memset(intsrcovr, 0, sizeof(*intsrcovr));
196 intsrcovr->type = APIC_XRUPT_OVERRIDE;
197 intsrcovr->length = sizeof(*intsrcovr);
198 intsrcovr->source = i;
199 intsrcovr->gsi = cpu_to_le32(i);
200 intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
201 intsrcovr++;
202 }
203
204 struct madt_local_nmi *local_nmi = (void*)intsrcovr;
205 local_nmi->type = APIC_LOCAL_NMI;
206 local_nmi->length = sizeof(*local_nmi);
207 local_nmi->processor_id = 0xff; /* all processors */
208 local_nmi->flags = cpu_to_le16(0);
209 local_nmi->lint = 1; /* LINT1 */
210 local_nmi++;
211
212 build_header((void*)madt, APIC_SIGNATURE, (void*)local_nmi - (void*)madt, 1);
213 return madt;
214 }
215
216 // Encode a hex value
getHex(u32 val)217 static inline char getHex(u32 val) {
218 val &= 0x0f;
219 return (val <= 9) ? ('0' + val) : ('A' + val - 10);
220 }
221
222 // Encode a length in an SSDT.
223 static u8 *
encodeLen(u8 * ssdt_ptr,int length,int bytes)224 encodeLen(u8 *ssdt_ptr, int length, int bytes)
225 {
226 switch (bytes) {
227 default:
228 case 4: ssdt_ptr[3] = ((length >> 20) & 0xff);
229 case 3: ssdt_ptr[2] = ((length >> 12) & 0xff);
230 case 2: ssdt_ptr[1] = ((length >> 4) & 0xff);
231 ssdt_ptr[0] = (((bytes-1) & 0x3) << 6) | (length & 0x0f);
232 break;
233 case 1: ssdt_ptr[0] = length & 0x3f;
234 }
235 return ssdt_ptr + bytes;
236 }
237
238 #include "fw/ssdt-proc.hex"
239
240 /* 0x5B 0x83 ProcessorOp PkgLength NameString ProcID */
241 #define PROC_OFFSET_CPUHEX (*ssdt_proc_name - *ssdt_proc_start + 2)
242 #define PROC_OFFSET_CPUID1 (*ssdt_proc_name - *ssdt_proc_start + 4)
243 #define PROC_OFFSET_CPUID2 (*ssdt_proc_id - *ssdt_proc_start)
244 #define PROC_SIZEOF (*ssdt_proc_end - *ssdt_proc_start)
245 #define PROC_AML (ssdp_proc_aml + *ssdt_proc_start)
246
247 /* 0x5B 0x82 DeviceOp PkgLength NameString */
248 #define PCIHP_OFFSET_HEX (*ssdt_pcihp_name - *ssdt_pcihp_start + 1)
249 #define PCIHP_OFFSET_ID (*ssdt_pcihp_id - *ssdt_pcihp_start)
250 #define PCIHP_OFFSET_ADR (*ssdt_pcihp_adr - *ssdt_pcihp_start)
251 #define PCIHP_OFFSET_EJ0 (*ssdt_pcihp_ej0 - *ssdt_pcihp_start)
252 #define PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start)
253 #define PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start)
254 #define PCI_SLOTS 32
255
256 #define SSDT_SIGNATURE 0x54445353 // SSDT
257 #define SSDT_HEADER_LENGTH 36
258
259 #include "fw/ssdt-misc.hex"
260 #include "fw/ssdt-pcihp.hex"
261
262 #define PCI_RMV_BASE 0xae0c
263
264 static u8*
build_notify(u8 * ssdt_ptr,const char * name,int skip,int count,const char * target,int ofs)265 build_notify(u8 *ssdt_ptr, const char *name, int skip, int count,
266 const char *target, int ofs)
267 {
268 count -= skip;
269
270 *(ssdt_ptr++) = 0x14; // MethodOp
271 ssdt_ptr = encodeLen(ssdt_ptr, 2+5+(12*count), 2);
272 memcpy(ssdt_ptr, name, 4);
273 ssdt_ptr += 4;
274 *(ssdt_ptr++) = 0x02; // MethodOp
275
276 int i;
277 for (i = skip; count-- > 0; i++) {
278 *(ssdt_ptr++) = 0xA0; // IfOp
279 ssdt_ptr = encodeLen(ssdt_ptr, 11, 1);
280 *(ssdt_ptr++) = 0x93; // LEqualOp
281 *(ssdt_ptr++) = 0x68; // Arg0Op
282 *(ssdt_ptr++) = 0x0A; // BytePrefix
283 *(ssdt_ptr++) = i;
284 *(ssdt_ptr++) = 0x86; // NotifyOp
285 memcpy(ssdt_ptr, target, 4);
286 ssdt_ptr[ofs] = getHex(i >> 4);
287 ssdt_ptr[ofs + 1] = getHex(i);
288 ssdt_ptr += 4;
289 *(ssdt_ptr++) = 0x69; // Arg1Op
290 }
291 return ssdt_ptr;
292 }
293
patch_pcihp(int slot,u8 * ssdt_ptr,u32 eject)294 static void patch_pcihp(int slot, u8 *ssdt_ptr, u32 eject)
295 {
296 ssdt_ptr[PCIHP_OFFSET_HEX] = getHex(slot >> 4);
297 ssdt_ptr[PCIHP_OFFSET_HEX+1] = getHex(slot);
298 ssdt_ptr[PCIHP_OFFSET_ID] = slot;
299 ssdt_ptr[PCIHP_OFFSET_ADR + 2] = slot;
300
301 /* Runtime patching of EJ0: to disable hotplug for a slot,
302 * replace the method name: _EJ0 by EJ0_. */
303 /* Sanity check */
304 if (memcmp(ssdt_ptr + PCIHP_OFFSET_EJ0, "_EJ0", 4)) {
305 warn_internalerror();
306 }
307 if (!eject) {
308 memcpy(ssdt_ptr + PCIHP_OFFSET_EJ0, "EJ0_", 4);
309 }
310 }
311
312 static void*
build_ssdt(void)313 build_ssdt(void)
314 {
315 int acpi_cpus = MaxCountCPUs > 0xff ? 0xff : MaxCountCPUs;
316 int length = (sizeof(ssdp_misc_aml) // _S3_ / _S4_ / _S5_
317 + (1+3+4) // Scope(_SB_)
318 + (acpi_cpus * PROC_SIZEOF) // procs
319 + (1+2+5+(12*acpi_cpus)) // NTFY
320 + (6+2+1+(1*acpi_cpus)) // CPON
321 + (1+3+4) // Scope(PCI0)
322 + ((PCI_SLOTS - 1) * PCIHP_SIZEOF) // slots
323 + (1+2+5+(12*(PCI_SLOTS - 1)))); // PCNT
324 u8 *ssdt = malloc_high(length);
325 if (! ssdt) {
326 warn_noalloc();
327 return NULL;
328 }
329 u8 *ssdt_ptr = ssdt;
330
331 // Copy header and encode fwcfg values in the S3_ / S4_ / S5_ packages
332 int sys_state_size;
333 char *sys_states = romfile_loadfile("etc/system-states", &sys_state_size);
334 if (!sys_states || sys_state_size != 6)
335 sys_states = (char[]){128, 0, 0, 129, 128, 128};
336
337 memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml));
338 if (!(sys_states[3] & 128))
339 ssdt_ptr[acpi_s3_name[0]] = 'X';
340 if (!(sys_states[4] & 128))
341 ssdt_ptr[acpi_s4_name[0]] = 'X';
342 else
343 ssdt_ptr[acpi_s4_pkg[0] + 1] = ssdt[acpi_s4_pkg[0] + 3] = sys_states[4] & 127;
344
345 // store pci io windows
346 *(u32*)&ssdt_ptr[acpi_pci32_start[0]] = cpu_to_le32(pcimem_start);
347 *(u32*)&ssdt_ptr[acpi_pci32_end[0]] = cpu_to_le32(pcimem_end - 1);
348 if (pcimem64_start) {
349 ssdt_ptr[acpi_pci64_valid[0]] = 1;
350 *(u64*)&ssdt_ptr[acpi_pci64_start[0]] = cpu_to_le64(pcimem64_start);
351 *(u64*)&ssdt_ptr[acpi_pci64_end[0]] = cpu_to_le64(pcimem64_end - 1);
352 *(u64*)&ssdt_ptr[acpi_pci64_length[0]] = cpu_to_le64(
353 pcimem64_end - pcimem64_start);
354 } else {
355 ssdt_ptr[acpi_pci64_valid[0]] = 0;
356 }
357
358 int pvpanic_port = romfile_loadint("etc/pvpanic-port", 0x0);
359 *(u16 *)(ssdt_ptr + *ssdt_isa_pest) = pvpanic_port;
360
361 ssdt_ptr += sizeof(ssdp_misc_aml);
362
363 // build Scope(_SB_) header
364 *(ssdt_ptr++) = 0x10; // ScopeOp
365 ssdt_ptr = encodeLen(ssdt_ptr, length - (ssdt_ptr - ssdt), 3);
366 *(ssdt_ptr++) = '_';
367 *(ssdt_ptr++) = 'S';
368 *(ssdt_ptr++) = 'B';
369 *(ssdt_ptr++) = '_';
370
371 // build Processor object for each processor
372 int i;
373 for (i=0; i<acpi_cpus; i++) {
374 memcpy(ssdt_ptr, PROC_AML, PROC_SIZEOF);
375 ssdt_ptr[PROC_OFFSET_CPUHEX] = getHex(i >> 4);
376 ssdt_ptr[PROC_OFFSET_CPUHEX+1] = getHex(i);
377 ssdt_ptr[PROC_OFFSET_CPUID1] = i;
378 ssdt_ptr[PROC_OFFSET_CPUID2] = i;
379 ssdt_ptr += PROC_SIZEOF;
380 }
381
382 // build "Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}"
383 // Arg0 = Processor ID = APIC ID
384 ssdt_ptr = build_notify(ssdt_ptr, "NTFY", 0, acpi_cpus, "CP00", 2);
385
386 // build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
387 *(ssdt_ptr++) = 0x08; // NameOp
388 *(ssdt_ptr++) = 'C';
389 *(ssdt_ptr++) = 'P';
390 *(ssdt_ptr++) = 'O';
391 *(ssdt_ptr++) = 'N';
392 *(ssdt_ptr++) = 0x12; // PackageOp
393 ssdt_ptr = encodeLen(ssdt_ptr, 2+1+(1*acpi_cpus), 2);
394 *(ssdt_ptr++) = acpi_cpus;
395 for (i=0; i<acpi_cpus; i++)
396 *(ssdt_ptr++) = (apic_id_is_present(i)) ? 0x01 : 0x00;
397
398 // build Scope(PCI0) opcode
399 *(ssdt_ptr++) = 0x10; // ScopeOp
400 ssdt_ptr = encodeLen(ssdt_ptr, length - (ssdt_ptr - ssdt), 3);
401 *(ssdt_ptr++) = 'P';
402 *(ssdt_ptr++) = 'C';
403 *(ssdt_ptr++) = 'I';
404 *(ssdt_ptr++) = '0';
405
406 // build Device object for each slot
407 u32 rmvc_pcrm = inl(PCI_RMV_BASE);
408 for (i=1; i<PCI_SLOTS; i++) {
409 u32 eject = rmvc_pcrm & (0x1 << i);
410 memcpy(ssdt_ptr, PCIHP_AML, PCIHP_SIZEOF);
411 patch_pcihp(i, ssdt_ptr, eject != 0);
412 ssdt_ptr += PCIHP_SIZEOF;
413 }
414
415 ssdt_ptr = build_notify(ssdt_ptr, "PCNT", 1, PCI_SLOTS, "S00_", 1);
416
417 build_header((void*)ssdt, SSDT_SIGNATURE, ssdt_ptr - ssdt, 1);
418
419 //hexdump(ssdt, ssdt_ptr - ssdt);
420
421 return ssdt;
422 }
423
424 #define HPET_ID 0x000
425 #define HPET_PERIOD 0x004
426
427 static void*
build_hpet(void)428 build_hpet(void)
429 {
430 struct acpi_20_hpet *hpet;
431 const void *hpet_base = (void *)BUILD_HPET_ADDRESS;
432 u32 hpet_vendor = readl(hpet_base + HPET_ID) >> 16;
433 u32 hpet_period = readl(hpet_base + HPET_PERIOD);
434
435 if (hpet_vendor == 0 || hpet_vendor == 0xffff ||
436 hpet_period == 0 || hpet_period > 100000000)
437 return NULL;
438
439 hpet = malloc_high(sizeof(*hpet));
440 if (!hpet) {
441 warn_noalloc();
442 return NULL;
443 }
444
445 memset(hpet, 0, sizeof(*hpet));
446 /* Note timer_block_id value must be kept in sync with value advertised by
447 * emulated hpet
448 */
449 hpet->timer_block_id = cpu_to_le32(0x8086a201);
450 hpet->addr.address = cpu_to_le64(BUILD_HPET_ADDRESS);
451 build_header((void*)hpet, HPET_SIGNATURE, sizeof(*hpet), 1);
452
453 return hpet;
454 }
455
456 static void
acpi_build_srat_memory(struct srat_memory_affinity * numamem,u64 base,u64 len,int node,int enabled)457 acpi_build_srat_memory(struct srat_memory_affinity *numamem,
458 u64 base, u64 len, int node, int enabled)
459 {
460 numamem->type = SRAT_MEMORY;
461 numamem->length = sizeof(*numamem);
462 memset(numamem->proximity, 0, 4);
463 numamem->proximity[0] = node;
464 numamem->flags = cpu_to_le32(!!enabled);
465 numamem->base_addr = cpu_to_le64(base);
466 numamem->range_length = cpu_to_le64(len);
467 }
468
469 static void *
build_srat(void)470 build_srat(void)
471 {
472 int numadatasize, numacpusize;
473 u64 *numadata = romfile_loadfile("etc/numa-nodes", &numadatasize);
474 u64 *numacpumap = romfile_loadfile("etc/numa-cpu-map", &numacpusize);
475 if (!numadata || !numacpumap)
476 goto fail;
477 int max_cpu = numacpusize / sizeof(u64);
478 int nb_numa_nodes = numadatasize / sizeof(u64);
479
480 struct system_resource_affinity_table *srat;
481 int srat_size = sizeof(*srat) +
482 sizeof(struct srat_processor_affinity) * max_cpu +
483 sizeof(struct srat_memory_affinity) * (nb_numa_nodes + 2);
484
485 srat = malloc_high(srat_size);
486 if (!srat) {
487 warn_noalloc();
488 goto fail;
489 }
490
491 memset(srat, 0, srat_size);
492 srat->reserved1=cpu_to_le32(1);
493 struct srat_processor_affinity *core = (void*)(srat + 1);
494 int i;
495 u64 curnode;
496
497 for (i = 0; i < max_cpu; ++i) {
498 core->type = SRAT_PROCESSOR;
499 core->length = sizeof(*core);
500 core->local_apic_id = i;
501 curnode = *numacpumap++;
502 core->proximity_lo = curnode;
503 memset(core->proximity_hi, 0, 3);
504 core->local_sapic_eid = 0;
505 if (apic_id_is_present(i))
506 core->flags = cpu_to_le32(1);
507 else
508 core->flags = cpu_to_le32(0);
509 core++;
510 }
511
512
513 /* the memory map is a bit tricky, it contains at least one hole
514 * from 640k-1M and possibly another one from 3.5G-4G.
515 */
516 struct srat_memory_affinity *numamem = (void*)core;
517 int slots = 0;
518 u64 mem_len, mem_base, next_base = 0;
519
520 acpi_build_srat_memory(numamem, 0, 640*1024, 0, 1);
521 next_base = 1024 * 1024;
522 numamem++;
523 slots++;
524 for (i = 1; i < nb_numa_nodes + 1; ++i) {
525 mem_base = next_base;
526 mem_len = *numadata++;
527 if (i == 1)
528 mem_len -= 1024 * 1024;
529 next_base = mem_base + mem_len;
530
531 /* Cut out the PCI hole */
532 if (mem_base <= RamSize && next_base > RamSize) {
533 mem_len -= next_base - RamSize;
534 if (mem_len > 0) {
535 acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
536 numamem++;
537 slots++;
538 }
539 mem_base = 1ULL << 32;
540 mem_len = next_base - RamSize;
541 next_base += (1ULL << 32) - RamSize;
542 }
543 acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
544 numamem++;
545 slots++;
546 }
547 for (; slots < nb_numa_nodes + 2; slots++) {
548 acpi_build_srat_memory(numamem, 0, 0, 0, 0);
549 numamem++;
550 }
551
552 build_header((void*)srat, SRAT_SIGNATURE, srat_size, 1);
553
554 free(numadata);
555 free(numacpumap);
556 return srat;
557 fail:
558 free(numadata);
559 free(numacpumap);
560 return NULL;
561 }
562
563 static void *
build_mcfg_q35(void)564 build_mcfg_q35(void)
565 {
566 struct acpi_table_mcfg *mcfg;
567
568 int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
569 mcfg = malloc_high(len);
570 if (!mcfg) {
571 warn_noalloc();
572 return NULL;
573 }
574 memset(mcfg, 0, len);
575 mcfg->allocation[0].address = cpu_to_le64(Q35_HOST_BRIDGE_PCIEXBAR_ADDR);
576 mcfg->allocation[0].pci_segment = cpu_to_le16(Q35_HOST_PCIE_PCI_SEGMENT);
577 mcfg->allocation[0].start_bus_number = Q35_HOST_PCIE_START_BUS_NUMBER;
578 mcfg->allocation[0].end_bus_number = Q35_HOST_PCIE_END_BUS_NUMBER;
579
580 build_header((void *)mcfg, MCFG_SIGNATURE, len, 1);
581 return mcfg;
582 }
583
584 static const struct pci_device_id acpi_find_tbl[] = {
585 /* PIIX4 Power Management device. */
586 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, NULL),
587 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_LPC, NULL),
588 PCI_DEVICE_END,
589 };
590
591 #define MAX_ACPI_TABLES 20
592 void
acpi_setup(void)593 acpi_setup(void)
594 {
595 if (! CONFIG_ACPI)
596 return;
597
598 dprintf(3, "init ACPI tables\n");
599
600 // This code is hardcoded for PIIX4 Power Management device.
601 struct pci_device *pci = pci_find_init_device(acpi_find_tbl, NULL);
602 if (!pci)
603 // Device not found
604 return;
605
606 // Build ACPI tables
607 u32 tables[MAX_ACPI_TABLES], tbl_idx = 0;
608
609 #define ACPI_INIT_TABLE(X) \
610 do { \
611 tables[tbl_idx] = cpu_to_le32((u32)(X)); \
612 if (le32_to_cpu(tables[tbl_idx])) \
613 tbl_idx++; \
614 } while(0)
615
616 struct fadt_descriptor_rev1 *fadt = build_fadt(pci);
617 ACPI_INIT_TABLE(fadt);
618 ACPI_INIT_TABLE(build_ssdt());
619 ACPI_INIT_TABLE(build_madt());
620 ACPI_INIT_TABLE(build_hpet());
621 ACPI_INIT_TABLE(build_srat());
622 if (pci->device == PCI_DEVICE_ID_INTEL_ICH9_LPC)
623 ACPI_INIT_TABLE(build_mcfg_q35());
624
625 struct romfile_s *file = NULL;
626 for (;;) {
627 file = romfile_findprefix("acpi/", file);
628 if (!file)
629 break;
630 struct acpi_table_header *table = malloc_high(file->size);
631 if (!table) {
632 warn_noalloc();
633 continue;
634 }
635 int ret = file->copy(file, table, file->size);
636 if (ret <= sizeof(*table))
637 continue;
638 if (table->signature == DSDT_SIGNATURE) {
639 if (fadt) {
640 fill_dsdt(fadt, table);
641 }
642 } else {
643 ACPI_INIT_TABLE(table);
644 }
645 if (tbl_idx == MAX_ACPI_TABLES) {
646 warn_noalloc();
647 break;
648 }
649 }
650
651 if (CONFIG_ACPI_DSDT && fadt && !fadt->dsdt) {
652 /* default DSDT */
653 struct acpi_table_header *dsdt = malloc_high(sizeof(AmlCode));
654 if (!dsdt) {
655 warn_noalloc();
656 return;
657 }
658 memcpy(dsdt, AmlCode, sizeof(AmlCode));
659 fill_dsdt(fadt, dsdt);
660 /* Strip out compiler-generated header if any */
661 memset(dsdt, 0, sizeof *dsdt);
662 build_header(dsdt, DSDT_SIGNATURE, sizeof(AmlCode), 1);
663 }
664
665 // Build final rsdt table
666 struct rsdt_descriptor_rev1 *rsdt;
667 size_t rsdt_len = sizeof(*rsdt) + sizeof(u32) * tbl_idx;
668 rsdt = malloc_high(rsdt_len);
669 if (!rsdt) {
670 warn_noalloc();
671 return;
672 }
673 memset(rsdt, 0, rsdt_len);
674 memcpy(rsdt->table_offset_entry, tables, sizeof(u32) * tbl_idx);
675 build_header((void*)rsdt, RSDT_SIGNATURE, rsdt_len, 1);
676
677 // Build rsdp pointer table
678 struct rsdp_descriptor rsdp;
679 memset(&rsdp, 0, sizeof(rsdp));
680 rsdp.signature = cpu_to_le64(RSDP_SIGNATURE);
681 memcpy(rsdp.oem_id, BUILD_APPNAME6, 6);
682 rsdp.rsdt_physical_address = cpu_to_le32((u32)rsdt);
683 rsdp.checksum -= checksum(&rsdp, 20);
684 copy_acpi_rsdp(&rsdp);
685 }
686