1 // Support for generating ACPI tables (on emulators)
3 // Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
4 // Copyright (C) 2006 Fabrice Bellard
6 // This file may be distributed under the terms of the GNU LGPLv3 license.
8 #include "acpi.h" // struct rsdp_descriptor
9 #include "util.h" // memcpy
10 #include "pci.h" // pci_find_init_device
11 #include "biosvar.h" // GET_EBDA
12 #include "pci_ids.h" // PCI_VENDOR_ID_INTEL
13 #include "pci_regs.h" // PCI_INTERRUPT_LINE
16 /****************************************************/
17 /* ACPI tables init */
19 /* Table structure from Linux kernel (the ACPI tables are under the
22 struct acpi_table_header /* ACPI common table header */
28 * ACPI 1.0 Root System Description Table (RSDT)
30 #define RSDT_SIGNATURE 0x54445352 // RSDT
31 struct rsdt_descriptor_rev1
33 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
34 u32 table_offset_entry[0]; /* Array of pointers to other */
39 * ACPI 1.0 Firmware ACPI Control Structure (FACS)
41 #define FACS_SIGNATURE 0x53434146 // FACS
42 struct facs_descriptor_rev1
44 u32 signature; /* ACPI Signature */
45 u32 length; /* Length of structure, in bytes */
46 u32 hardware_signature; /* Hardware configuration signature */
47 u32 firmware_waking_vector; /* ACPI OS waking vector */
48 u32 global_lock; /* Global Lock */
49 u32 S4bios_f : 1; /* Indicates if S4BIOS support is present */
50 u32 reserved1 : 31; /* Must be 0 */
51 u8 resverved3 [40]; /* Reserved - must be zero */
56 * MADT values and structures
59 /* Values for MADT PCATCompat */
62 #define MULTIPLE_APIC 1
67 #define APIC_SIGNATURE 0x43495041 // APIC
68 struct multiple_apic_table
70 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
71 u32 local_apic_address; /* Physical address of local APIC */
73 u32 PCATcompat : 1; /* A one indicates system also has dual 8259s */
81 /* Values for Type in APIC sub-headers */
83 #define APIC_PROCESSOR 0
85 #define APIC_XRUPT_OVERRIDE 2
87 #define APIC_LOCAL_NMI 4
88 #define APIC_ADDRESS_OVERRIDE 5
89 #define APIC_IO_SAPIC 6
90 #define APIC_LOCAL_SAPIC 7
91 #define APIC_XRUPT_SOURCE 8
92 #define APIC_RESERVED 9 /* 9 and greater are reserved */
95 * MADT sub-structures (Follow MULTIPLE_APIC_DESCRIPTION_TABLE)
97 #define ACPI_SUB_HEADER_DEF /* Common ACPI sub-structure header */\
101 /* Sub-structures for MADT */
103 struct madt_processor_apic
106 u8 processor_id; /* ACPI processor id */
107 u8 local_apic_id; /* Processor's local APIC id */
109 u32 processor_enabled: 1; /* Processor is usable if set */
110 u32 reserved2 : 31; /* Reserved, must be zero */
119 u8 io_apic_id; /* I/O APIC ID */
120 u8 reserved; /* Reserved - must be zero */
121 u32 address; /* APIC physical address */
122 u32 interrupt; /* Global system interrupt where INTI
127 #define PCI_ISA_IRQ_MASK 0x0e20
129 struct madt_intsrcovr {
138 * ACPI 2.0 Generic Address Space definition.
140 struct acpi_20_generic_address {
142 u8 register_bit_width;
143 u8 register_bit_offset;
149 * HPET Description Table
151 struct acpi_20_hpet {
152 ACPI_TABLE_HEADER_DEF /* ACPI common table header */
154 struct acpi_20_generic_address addr;
159 #define ACPI_HPET_ADDRESS 0xFED00000UL
162 * SRAT (NUMA topology description) table
165 #define SRAT_PROCESSOR 0
166 #define SRAT_MEMORY 1
168 struct system_resource_affinity_table
170 ACPI_TABLE_HEADER_DEF
175 struct srat_processor_affinity
186 struct srat_memory_affinity
191 u32 base_addr_low,base_addr_high;
192 u32 length_low,length_high;
198 #include "acpi-dsdt.hex"
201 build_header(struct acpi_table_header *h, u32 sig, int len, u8 rev)
204 h->length = cpu_to_le32(len);
206 memcpy(h->oem_id, CONFIG_APPNAME6, 6);
207 memcpy(h->oem_table_id, CONFIG_APPNAME4, 4);
208 memcpy(h->asl_compiler_id, CONFIG_APPNAME4, 4);
209 memcpy(h->oem_table_id + 4, (void*)&sig, 4);
210 h->oem_revision = cpu_to_le32(1);
211 h->asl_compiler_revision = cpu_to_le32(1);
212 h->checksum -= checksum(h, len);
215 #define PIIX4_ACPI_ENABLE 0xf1
216 #define PIIX4_ACPI_DISABLE 0xf0
217 #define PIIX4_GPE0_BLK 0xafe0
218 #define PIIX4_GPE0_BLK_LEN 4
220 static void piix4_fadt_init(struct pci_device *pci, void *arg)
222 struct fadt_descriptor_rev1 *fadt = arg;
223 fadt->acpi_enable = PIIX4_ACPI_ENABLE;
224 fadt->acpi_disable = PIIX4_ACPI_DISABLE;
225 fadt->gpe0_blk = cpu_to_le32(PIIX4_GPE0_BLK);
226 fadt->gpe0_blk_len = PIIX4_GPE0_BLK_LEN;
229 static const struct pci_device_id fadt_init_tbl[] = {
230 /* PIIX4 Power Management device (for ACPI) */
231 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3,
238 build_fadt(struct pci_device *pci)
240 struct fadt_descriptor_rev1 *fadt = malloc_high(sizeof(*fadt));
241 struct facs_descriptor_rev1 *facs = memalign_high(64, sizeof(*facs));
242 void *dsdt = malloc_high(sizeof(AmlCode));
244 if (!fadt || !facs || !dsdt) {
250 memset(facs, 0, sizeof(*facs));
251 facs->signature = FACS_SIGNATURE;
252 facs->length = cpu_to_le32(sizeof(*facs));
255 memcpy(dsdt, AmlCode, sizeof(AmlCode));
258 memset(fadt, 0, sizeof(*fadt));
259 fadt->firmware_ctrl = cpu_to_le32((u32)facs);
260 fadt->dsdt = cpu_to_le32((u32)dsdt);
263 int pm_sci_int = pci_config_readb(pci->bdf, PCI_INTERRUPT_LINE);
264 fadt->sci_int = cpu_to_le16(pm_sci_int);
265 fadt->smi_cmd = cpu_to_le32(PORT_SMI_CMD);
266 fadt->pm1a_evt_blk = cpu_to_le32(PORT_ACPI_PM_BASE);
267 fadt->pm1a_cnt_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x04);
268 fadt->pm_tmr_blk = cpu_to_le32(PORT_ACPI_PM_BASE + 0x08);
269 fadt->pm1_evt_len = 4;
270 fadt->pm1_cnt_len = 2;
271 fadt->pm_tmr_len = 4;
272 fadt->plvl2_lat = cpu_to_le16(0xfff); // C2 state not supported
273 fadt->plvl3_lat = cpu_to_le16(0xfff); // C3 state not supported
274 pci_init_device(fadt_init_tbl, pci, fadt);
275 /* WBINVD + PROC_C1 + SLP_BUTTON + FIX_RTC + RTC_S4 */
276 fadt->flags = cpu_to_le32((1 << 0) | (1 << 2) | (1 << 5) | (1 << 6) | (1 << 7));
278 build_header((void*)fadt, FACP_SIGNATURE, sizeof(*fadt), 1);
286 int madt_size = (sizeof(struct multiple_apic_table)
287 + sizeof(struct madt_processor_apic) * MaxCountCPUs
288 + sizeof(struct madt_io_apic)
289 + sizeof(struct madt_intsrcovr) * 16);
290 struct multiple_apic_table *madt = malloc_high(madt_size);
295 memset(madt, 0, madt_size);
296 madt->local_apic_address = cpu_to_le32(BUILD_APIC_ADDR);
297 madt->flags = cpu_to_le32(1);
298 struct madt_processor_apic *apic = (void*)&madt[1];
300 for (i=0; i<MaxCountCPUs; i++) {
301 apic->type = APIC_PROCESSOR;
302 apic->length = sizeof(*apic);
303 apic->processor_id = i;
304 apic->local_apic_id = i;
306 apic->flags = cpu_to_le32(1);
308 apic->flags = cpu_to_le32(0);
311 struct madt_io_apic *io_apic = (void*)apic;
312 io_apic->type = APIC_IO;
313 io_apic->length = sizeof(*io_apic);
314 io_apic->io_apic_id = CountCPUs;
315 io_apic->address = cpu_to_le32(BUILD_IOAPIC_ADDR);
316 io_apic->interrupt = cpu_to_le32(0);
318 struct madt_intsrcovr *intsrcovr = (void*)&io_apic[1];
319 if (qemu_cfg_irq0_override()) {
320 memset(intsrcovr, 0, sizeof(*intsrcovr));
321 intsrcovr->type = APIC_XRUPT_OVERRIDE;
322 intsrcovr->length = sizeof(*intsrcovr);
323 intsrcovr->source = 0;
325 intsrcovr->flags = 0; /* conforms to bus specifications */
328 for (i = 1; i < 16; i++) {
329 if (!(PCI_ISA_IRQ_MASK & (1 << i)))
330 /* No need for a INT source override structure. */
332 memset(intsrcovr, 0, sizeof(*intsrcovr));
333 intsrcovr->type = APIC_XRUPT_OVERRIDE;
334 intsrcovr->length = sizeof(*intsrcovr);
335 intsrcovr->source = i;
337 intsrcovr->flags = 0xd; /* active high, level triggered */
341 build_header((void*)madt, APIC_SIGNATURE, (void*)intsrcovr - (void*)madt, 1);
345 // Encode a hex value
346 static inline char getHex(u32 val) {
348 return (val <= 9) ? ('0' + val) : ('A' + val - 10);
351 // Encode a length in an SSDT.
353 encodeLen(u8 *ssdt_ptr, int length, int bytes)
357 case 4: ssdt_ptr[3] = ((length >> 20) & 0xff);
358 case 3: ssdt_ptr[2] = ((length >> 12) & 0xff);
359 case 2: ssdt_ptr[1] = ((length >> 4) & 0xff);
360 ssdt_ptr[0] = (((bytes-1) & 0x3) << 6) | (length & 0x0f);
362 case 1: ssdt_ptr[0] = length & 0x3f;
364 return ssdt_ptr + bytes;
367 // AML Processor() object. See src/ssdt-proc.dsl for info.
368 static unsigned char ssdt_proc[] = {
369 0x5b,0x83,0x42,0x05,0x43,0x50,0x41,0x41,
370 0xaa,0x10,0xb0,0x00,0x00,0x06,0x08,0x49,
371 0x44,0x5f,0x5f,0x0a,0xaa,0x08,0x5f,0x48,
372 0x49,0x44,0x0d,0x41,0x43,0x50,0x49,0x30,
373 0x30,0x30,0x37,0x00,0x14,0x0f,0x5f,0x4d,
374 0x41,0x54,0x00,0xa4,0x43,0x50,0x4d,0x41,
375 0x49,0x44,0x5f,0x5f,0x14,0x0f,0x5f,0x53,
376 0x54,0x41,0x00,0xa4,0x43,0x50,0x53,0x54,
377 0x49,0x44,0x5f,0x5f,0x14,0x0f,0x5f,0x45,
378 0x4a,0x30,0x01,0x43,0x50,0x45,0x4a,0x49,
381 #define SD_OFFSET_CPUHEX 6
382 #define SD_OFFSET_CPUID1 8
383 #define SD_OFFSET_CPUID2 20
385 #define SSDT_SIGNATURE 0x54445353 // SSDT
389 int acpi_cpus = MaxCountCPUs > 0xff ? 0xff : MaxCountCPUs;
390 // length = ScopeOp + procs + NTYF method + CPON package
391 int length = ((1+3+4)
392 + (acpi_cpus * sizeof(ssdt_proc))
393 + (1+2+5+(12*acpi_cpus))
394 + (6+2+1+(1*acpi_cpus)));
395 u8 *ssdt = malloc_high(sizeof(struct acpi_table_header) + length);
400 u8 *ssdt_ptr = ssdt + sizeof(struct acpi_table_header);
402 // build Scope(_SB_) header
403 *(ssdt_ptr++) = 0x10; // ScopeOp
404 ssdt_ptr = encodeLen(ssdt_ptr, length-1, 3);
410 // build Processor object for each processor
412 for (i=0; i<acpi_cpus; i++) {
413 memcpy(ssdt_ptr, ssdt_proc, sizeof(ssdt_proc));
414 ssdt_ptr[SD_OFFSET_CPUHEX] = getHex(i >> 4);
415 ssdt_ptr[SD_OFFSET_CPUHEX+1] = getHex(i);
416 ssdt_ptr[SD_OFFSET_CPUID1] = i;
417 ssdt_ptr[SD_OFFSET_CPUID2] = i;
418 ssdt_ptr += sizeof(ssdt_proc);
421 // build "Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}"
422 *(ssdt_ptr++) = 0x14; // MethodOp
423 ssdt_ptr = encodeLen(ssdt_ptr, 2+5+(12*acpi_cpus), 2);
428 *(ssdt_ptr++) = 0x02;
429 for (i=0; i<acpi_cpus; i++) {
430 *(ssdt_ptr++) = 0xA0; // IfOp
431 ssdt_ptr = encodeLen(ssdt_ptr, 11, 1);
432 *(ssdt_ptr++) = 0x93; // LEqualOp
433 *(ssdt_ptr++) = 0x68; // Arg0Op
434 *(ssdt_ptr++) = 0x0A; // BytePrefix
436 *(ssdt_ptr++) = 0x86; // NotifyOp
439 *(ssdt_ptr++) = getHex(i >> 4);
440 *(ssdt_ptr++) = getHex(i);
441 *(ssdt_ptr++) = 0x69; // Arg1Op
444 // build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })"
445 *(ssdt_ptr++) = 0x08; // NameOp
450 *(ssdt_ptr++) = 0x12; // PackageOp
451 ssdt_ptr = encodeLen(ssdt_ptr, 2+1+(1*acpi_cpus), 2);
452 *(ssdt_ptr++) = acpi_cpus;
453 for (i=0; i<acpi_cpus; i++)
454 *(ssdt_ptr++) = (i < CountCPUs) ? 0x01 : 0x00;
456 build_header((void*)ssdt, SSDT_SIGNATURE, ssdt_ptr - ssdt, 1);
458 //hexdump(ssdt, ssdt_ptr - ssdt);
463 #define HPET_SIGNATURE 0x54455048 //HPET
467 struct acpi_20_hpet *hpet = malloc_high(sizeof(*hpet));
473 memset(hpet, 0, sizeof(*hpet));
474 /* Note timer_block_id value must be kept in sync with value advertised by
477 hpet->timer_block_id = cpu_to_le32(0x8086a201);
478 hpet->addr.address = cpu_to_le32(ACPI_HPET_ADDRESS);
479 build_header((void*)hpet, HPET_SIGNATURE, sizeof(*hpet), 1);
485 acpi_build_srat_memory(struct srat_memory_affinity *numamem,
486 u64 base, u64 len, int node, int enabled)
488 numamem->type = SRAT_MEMORY;
489 numamem->length = sizeof(*numamem);
490 memset (numamem->proximity, 0 ,4);
491 numamem->proximity[0] = node;
492 numamem->flags = cpu_to_le32(!!enabled);
493 numamem->base_addr_low = base & 0xFFFFFFFF;
494 numamem->base_addr_high = base >> 32;
495 numamem->length_low = len & 0xFFFFFFFF;
496 numamem->length_high = len >> 32;
499 #define SRAT_SIGNATURE 0x54415253 //HPET
503 int nb_numa_nodes = qemu_cfg_get_numa_nodes();
505 if (nb_numa_nodes == 0)
508 u64 *numadata = malloc_tmphigh(sizeof(u64) * (MaxCountCPUs + nb_numa_nodes));
514 qemu_cfg_get_numa_data(numadata, MaxCountCPUs + nb_numa_nodes);
516 struct system_resource_affinity_table *srat;
517 int srat_size = sizeof(*srat) +
518 sizeof(struct srat_processor_affinity) * MaxCountCPUs +
519 sizeof(struct srat_memory_affinity) * (nb_numa_nodes + 2);
521 srat = malloc_high(srat_size);
528 memset(srat, 0, srat_size);
530 struct srat_processor_affinity *core = (void*)(srat + 1);
534 for (i = 0; i < MaxCountCPUs; ++i) {
535 core->type = SRAT_PROCESSOR;
536 core->length = sizeof(*core);
537 core->local_apic_id = i;
538 curnode = *numadata++;
539 core->proximity_lo = curnode;
540 memset(core->proximity_hi, 0, 3);
541 core->local_sapic_eid = 0;
543 core->flags = cpu_to_le32(1);
550 /* the memory map is a bit tricky, it contains at least one hole
551 * from 640k-1M and possibly another one from 3.5G-4G.
553 struct srat_memory_affinity *numamem = (void*)core;
555 u64 mem_len, mem_base, next_base = 0;
557 acpi_build_srat_memory(numamem, 0, 640*1024, 0, 1);
558 next_base = 1024 * 1024;
561 for (i = 1; i < nb_numa_nodes + 1; ++i) {
562 mem_base = next_base;
563 mem_len = *numadata++;
565 mem_len -= 1024 * 1024;
566 next_base = mem_base + mem_len;
568 /* Cut out the PCI hole */
569 if (mem_base <= RamSize && next_base > RamSize) {
570 mem_len -= next_base - RamSize;
572 acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
576 mem_base = 1ULL << 32;
577 mem_len = next_base - RamSize;
578 next_base += (1ULL << 32) - RamSize;
580 acpi_build_srat_memory(numamem, mem_base, mem_len, i-1, 1);
584 for (; slots < nb_numa_nodes + 2; slots++) {
585 acpi_build_srat_memory(numamem, 0, 0, 0, 0);
589 build_header((void*)srat, SRAT_SIGNATURE, srat_size, 1);
595 static const struct pci_device_id acpi_find_tbl[] = {
596 /* PIIX4 Power Management device. */
597 PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, NULL),
602 struct rsdp_descriptor *RsdpAddr;
604 #define MAX_ACPI_TABLES 20
611 dprintf(3, "init ACPI tables\n");
613 // This code is hardcoded for PIIX4 Power Management device.
614 struct pci_device *pci = pci_find_init_device(acpi_find_tbl, NULL);
619 // Create initial rsdt table
620 struct rsdp_descriptor *rsdp = malloc_fseg(sizeof(*rsdp));
626 u32 tables[MAX_ACPI_TABLES], tbl_idx = 0;
628 #define ACPI_INIT_TABLE(X) \
630 tables[tbl_idx] = (u32)(X); \
631 if (tables[tbl_idx]) \
636 ACPI_INIT_TABLE(build_fadt(pci));
637 ACPI_INIT_TABLE(build_ssdt());
638 ACPI_INIT_TABLE(build_madt());
639 ACPI_INIT_TABLE(build_hpet());
640 ACPI_INIT_TABLE(build_srat());
642 u16 i, external_tables = qemu_cfg_acpi_additional_tables();
644 for(i = 0; i < external_tables; i++) {
645 u16 len = qemu_cfg_next_acpi_table_len();
646 void *addr = malloc_high(len);
651 ACPI_INIT_TABLE(qemu_cfg_next_acpi_table_load(addr, len));
652 if (tbl_idx == MAX_ACPI_TABLES) {
658 struct rsdt_descriptor_rev1 *rsdt;
659 size_t rsdt_len = sizeof(*rsdt) + sizeof(u32) * tbl_idx;
660 rsdt = malloc_high(rsdt_len);
666 memset(rsdt, 0, rsdt_len);
667 memcpy(rsdt->table_offset_entry, tables, sizeof(u32) * tbl_idx);
669 build_header((void*)rsdt, RSDT_SIGNATURE, rsdt_len, 1);
671 // Build rsdp pointer table
672 memset(rsdp, 0, sizeof(*rsdp));
673 rsdp->signature = RSDP_SIGNATURE;
674 memcpy(rsdp->oem_id, CONFIG_APPNAME6, 6);
675 rsdp->rsdt_physical_address = cpu_to_le32((u32)rsdt);
676 rsdp->checksum -= checksum(rsdp, 20);
678 dprintf(1, "ACPI tables: RSDP=%p RSDT=%p\n", rsdp, rsdt);
682 find_resume_vector(void)
684 dprintf(4, "rsdp=%p\n", RsdpAddr);
685 if (!RsdpAddr || RsdpAddr->signature != RSDP_SIGNATURE)
687 struct rsdt_descriptor_rev1 *rsdt = (void*)RsdpAddr->rsdt_physical_address;
688 dprintf(4, "rsdt=%p\n", rsdt);
689 if (!rsdt || rsdt->signature != RSDT_SIGNATURE)
691 void *end = (void*)rsdt + rsdt->length;
693 for (i=0; (void*)&rsdt->table_offset_entry[i] < end; i++) {
694 struct fadt_descriptor_rev1 *fadt = (void*)rsdt->table_offset_entry[i];
695 if (!fadt || fadt->signature != FACP_SIGNATURE)
697 dprintf(4, "fadt=%p\n", fadt);
698 struct facs_descriptor_rev1 *facs = (void*)fadt->firmware_ctrl;
699 dprintf(4, "facs=%p\n", facs);
700 if (! facs || facs->signature != FACS_SIGNATURE)
703 dprintf(4, "resume addr=%d\n", facs->firmware_waking_vector);
704 return facs->firmware_waking_vector;