2 * This file is part of the coreboot project.
4 * coreboot ACPI Table support
5 * written by Stefan Reinauer <stepan@openbios.org>
7 * Copyright (C) 2004 SUSE LINUX AG
8 * Copyright (C) 2005-2009 coresystems GmbH
10 * ACPI FADT, FACS, and DSDT table support added by
11 * Nick Barker <nick.barker9@btinternet.com>, and those portions
12 * Copyright (C) 2004 Nick Barker
14 * Copyright (C) 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved.
15 * 2005.9 yhlu add SRAT table generation
19 * Each system port implementing ACPI has to provide two functions:
24 * See Kontron 986LCD-M port for a good example of an ACPI implementation
28 #include <console/console.h>
30 #include <arch/acpi.h>
31 #include <arch/acpigen.h>
32 #include <device/pci.h>
35 u8 acpi_checksum(u8 *table, u32 length)
46 * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum
49 void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
53 acpi_xsdt_t *xsdt = NULL;
55 /* The RSDT is mandatory ... */
56 rsdt = (acpi_rsdt_t *)rsdp->rsdt_address;
58 /* ... while the XSDT is not */
59 if (rsdp->xsdt_address) {
60 xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address);
63 /* This should always be MAX_ACPI_TABLES */
64 entries_num = ARRAY_SIZE(rsdt->entry);
66 for (i = 0; i < entries_num; i++) {
67 if(rsdt->entry[i] == 0)
71 if (i >= entries_num) {
72 printk(BIOS_ERR, "ACPI: Error: Could not add ACPI table, too many tables.\n");
76 /* Add table to the RSDT */
77 rsdt->entry[i] = (u32)table;
79 /* Fix RSDT length or the kernel will assume invalid entries */
80 rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
82 /* Re-calculate checksum */
83 rsdt->header.checksum = 0; /* Hope this won't get optimized away */
84 rsdt->header.checksum = acpi_checksum((u8 *)rsdt,
87 /* And now the same thing for the XSDT. We use the same index as for
88 * now we want the XSDT and RSDT to always be in sync in coreboot.
91 /* Add table to the XSDT */
92 xsdt->entry[i]=(u64)(u32)table;
95 xsdt->header.length = sizeof(acpi_header_t) +
96 (sizeof(u64) * (i+1));
98 /* Re-calculate checksum */
99 xsdt->header.checksum=0;
100 xsdt->header.checksum=acpi_checksum((u8 *)xsdt,
101 xsdt->header.length);
104 printk(BIOS_DEBUG, "ACPI: added table %d/%d Length now %d\n",
105 i+1, entries_num, rsdt->header.length);
108 int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
110 mmconfig->base_address = base;
111 mmconfig->base_reserved = 0;
112 mmconfig->pci_segment_group_number = seg_nr;
113 mmconfig->start_bus_number = start;
114 mmconfig->end_bus_number = end;
115 return (sizeof(acpi_mcfg_mmconfig_t));
118 int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
121 lapic->length=sizeof(acpi_madt_lapic_t);
124 lapic->processor_id=cpu;
127 return(lapic->length);
130 unsigned long acpi_create_madt_lapics(unsigned long current)
135 for(cpu = all_devices; cpu; cpu = cpu->next) {
136 if ((cpu->path.type != DEVICE_PATH_APIC) ||
137 (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
143 current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
149 int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
152 ioapic->length=sizeof(acpi_madt_ioapic_t);
153 ioapic->reserved=0x00;
154 ioapic->gsi_base=gsi_base;
156 ioapic->ioapic_id=id;
157 ioapic->ioapic_addr=addr;
159 return(ioapic->length);
162 int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride,
163 u8 bus, u8 source, u32 gsirq, u16 flags)
166 irqoverride->length=sizeof(acpi_madt_irqoverride_t);
167 irqoverride->bus=bus;
168 irqoverride->source=source;
169 irqoverride->gsirq=gsirq;
170 irqoverride->flags=flags;
172 return(irqoverride->length);
175 int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
179 lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t);
181 lapic_nmi->flags=flags;
182 lapic_nmi->processor_id=cpu;
183 lapic_nmi->lint=lint;
185 return(lapic_nmi->length);
188 void acpi_create_madt(acpi_madt_t *madt)
190 #define LOCAL_APIC_ADDR 0xfee00000ULL
192 acpi_header_t *header=&(madt->header);
193 unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t);
195 memset((void *)madt, 0, sizeof(acpi_madt_t));
197 /* fill out header fields */
198 memcpy(header->signature, "APIC", 4);
199 memcpy(header->oem_id, OEM_ID, 6);
200 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
201 memcpy(header->asl_compiler_id, ASLC, 4);
203 header->length = sizeof(acpi_madt_t);
204 header->revision = 1;
206 madt->lapic_addr= LOCAL_APIC_ADDR;
207 madt->flags = 0x1; /* PCAT_COMPAT */
209 current = acpi_fill_madt(current);
211 /* recalculate length */
212 header->length= current - (unsigned long)madt;
214 header->checksum = acpi_checksum((void *)madt, header->length);
217 void acpi_create_mcfg(acpi_mcfg_t *mcfg)
220 acpi_header_t *header=&(mcfg->header);
221 unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
223 memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
225 /* fill out header fields */
226 memcpy(header->signature, "MCFG", 4);
227 memcpy(header->oem_id, OEM_ID, 6);
228 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
229 memcpy(header->asl_compiler_id, ASLC, 4);
231 header->length = sizeof(acpi_mcfg_t);
232 header->revision = 1;
234 current = acpi_fill_mcfg(current);
236 /* recalculate length */
237 header->length= current - (unsigned long)mcfg;
239 header->checksum = acpi_checksum((void *)mcfg, header->length);
242 /* this can be overriden by platform ACPI setup code,
243 * if it calls acpi_create_ssdt_generator
245 unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
246 const char *oem_table_id) {
250 void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
252 unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
253 memset((void *)ssdt, 0, sizeof(acpi_header_t));
254 memcpy(&ssdt->signature, "SSDT", 4);
256 memcpy(&ssdt->oem_id, OEM_ID, 6);
257 memcpy(&ssdt->oem_table_id, oem_table_id, 8);
258 ssdt->oem_revision = 42;
259 memcpy(&ssdt->asl_compiler_id, "CORE", 4);
260 ssdt->asl_compiler_revision = 42;
261 ssdt->length = sizeof(acpi_header_t);
263 acpigen_set_current((char *) current);
264 current = acpi_fill_ssdt_generator(current, oem_table_id);
266 /* recalculate length */
267 ssdt->length = current - (unsigned long)ssdt;
268 ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
271 int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
273 memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
275 lapic->length=sizeof(acpi_srat_lapic_t);
278 lapic->proximity_domain_7_0 = node;
281 return(lapic->length);
284 int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek,u32 sizek, u32 flags)
287 mem->length=sizeof(acpi_srat_mem_t);
289 mem->base_address_low = (basek<<10);
290 mem->base_address_high = (basek>>(32-10));
292 mem->length_low = (sizek<<10);
293 mem->length_high = (sizek>>(32-10));
295 mem->proximity_domain = node;
302 void acpi_create_srat(acpi_srat_t *srat)
305 acpi_header_t *header=&(srat->header);
306 unsigned long current=(unsigned long)srat+sizeof(acpi_srat_t);
308 memset((void *)srat, 0, sizeof(acpi_srat_t));
310 /* fill out header fields */
311 memcpy(header->signature, "SRAT", 4);
312 memcpy(header->oem_id, OEM_ID, 6);
313 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
314 memcpy(header->asl_compiler_id, ASLC, 4);
316 header->length = sizeof(acpi_srat_t);
317 header->revision = 1;
319 srat->resv = 0x1; /* BACK COMP */
321 current = acpi_fill_srat(current);
323 /* recalculate length */
324 header->length= current - (unsigned long)srat;
326 header->checksum = acpi_checksum((void *)srat, header->length);
329 void acpi_create_slit(acpi_slit_t *slit)
332 acpi_header_t *header=&(slit->header);
333 unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
335 memset((void *)slit, 0, sizeof(acpi_slit_t));
337 /* fill out header fields */
338 memcpy(header->signature, "SLIT", 4);
339 memcpy(header->oem_id, OEM_ID, 6);
340 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
341 memcpy(header->asl_compiler_id, ASLC, 4);
343 header->length = sizeof(acpi_slit_t);
344 header->revision = 1;
346 current = acpi_fill_slit(current);
348 /* recalculate length */
349 header->length= current - (unsigned long)slit;
351 header->checksum = acpi_checksum((void *)slit, header->length);
354 void acpi_create_hpet(acpi_hpet_t *hpet)
356 #define HPET_ADDR 0xfed00000ULL
357 acpi_header_t *header=&(hpet->header);
358 acpi_addr_t *addr=&(hpet->addr);
360 memset((void *)hpet, 0, sizeof(acpi_hpet_t));
362 /* fill out header fields */
363 memcpy(header->signature, "HPET", 4);
364 memcpy(header->oem_id, OEM_ID, 6);
365 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
366 memcpy(header->asl_compiler_id, ASLC, 4);
368 header->length = sizeof(acpi_hpet_t);
369 header->revision = 1;
371 /* fill out HPET address */
372 addr->space_id = 0; /* Memory */
373 addr->bit_width = 64;
374 addr->bit_offset = 0;
375 addr->addrl = HPET_ADDR & 0xffffffff;
376 addr->addrh = HPET_ADDR >> 32;
378 hpet->id = 0x102282a0; /* AMD ? */
380 hpet->min_tick = 4096;
382 header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
384 void acpi_create_facs(acpi_facs_t *facs)
387 memset( (void *)facs,0, sizeof(acpi_facs_t));
389 memcpy(facs->signature, "FACS", 4);
390 facs->length = sizeof(acpi_facs_t);
391 facs->hardware_signature = 0;
392 facs->firmware_waking_vector = 0;
393 facs->global_lock = 0;
395 facs->x_firmware_waking_vector_l = 0;
396 facs->x_firmware_waking_vector_h = 0;
400 void acpi_write_rsdt(acpi_rsdt_t *rsdt)
402 acpi_header_t *header=&(rsdt->header);
404 /* fill out header fields */
405 memcpy(header->signature, "RSDT", 4);
406 memcpy(header->oem_id, OEM_ID, 6);
407 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
408 memcpy(header->asl_compiler_id, ASLC, 4);
410 header->length = sizeof(acpi_rsdt_t);
411 header->revision = 1;
413 /* fill out entries */
415 // entries are filled in later, we come with an empty set.
419 header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
422 void acpi_write_xsdt(acpi_xsdt_t *xsdt)
424 acpi_header_t *header=&(xsdt->header);
426 /* fill out header fields */
427 memcpy(header->signature, "XSDT", 4);
428 memcpy(header->oem_id, OEM_ID, 6);
429 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
430 memcpy(header->asl_compiler_id, ASLC, 4);
432 header->length = sizeof(acpi_xsdt_t);
433 header->revision = 1;
435 /* fill out entries */
437 // entries are filled in later, we come with an empty set.
441 header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t));
444 void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt)
446 memset(rsdp, 0, sizeof(acpi_rsdp_t));
447 memcpy(rsdp->signature, RSDP_SIG, 8);
448 memcpy(rsdp->oem_id, OEM_ID, 6);
449 rsdp->length = sizeof(acpi_rsdp_t);
450 rsdp->rsdt_address = (u32)rsdt;
451 /* Some OSes expect an XSDT to be present for RSD PTR
452 * revisions >= 2. If we don't have an ACPI XSDT, force
453 * ACPI 1.0 (and thus RSD PTR revision 0)
458 rsdp->xsdt_address = (u64)(u32)xsdt;
461 rsdp->checksum = acpi_checksum((void *)rsdp, 20);
462 rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
465 #if CONFIG_HAVE_ACPI_RESUME == 1
466 void suspend_resume(void)
471 #if CONFIG_MEM_TRAIN_SEQ != 0
472 #error "So far it works on AMD and CONFIG_MEM_TRAIN_SEQ == 0"
475 #if CONFIG_RAMBASE < 0x1F00000
476 #error "For ACPI RESUME you need to have CONFIG_RAMBASE at least 31MB"
477 #error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
478 #error "And coreboot memory reserved in mainboard.c"
481 /* if we happen to be resuming find wakeup vector and jump to OS */
482 wake_vec = acpi_find_wakeup_vector();
484 acpi_jump_to_wakeup(wake_vec);
487 /* this is to be filled by SB code - startup value what was found */
488 u8 acpi_slp_type = 0;
490 static int acpi_is_wakeup(void)
492 return (acpi_slp_type == 3);
495 static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
497 if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
500 printk(BIOS_DEBUG, "Looking on %p for valid checksum\n", rsdp);
502 if (acpi_checksum((void *)rsdp, 20) != 0)
504 printk(BIOS_DEBUG, "Checksum 1 passed\n");
506 if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
510 printk(BIOS_DEBUG, "Checksum 2 passed all OK\n");
515 static acpi_rsdp_t *rsdp;
517 void *acpi_get_wakeup_rsdp(void)
522 void *acpi_find_wakeup_vector(void)
534 if (!acpi_is_wakeup())
537 printk(BIOS_DEBUG, "Trying to find the wakeup vector ...\n");
540 for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
541 if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
548 printk(BIOS_DEBUG, "RSDP found at %p\n", rsdp);
549 rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
551 end = (char *) rsdt + rsdt->header.length;
552 printk(BIOS_DEBUG, "RSDT found at %p ends at %p\n", rsdt, end);
554 for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
555 fadt = (acpi_fadt_t *) rsdt->entry[i];
556 if (strncmp((char *)fadt, "FACP", 4) == 0)
564 printk(BIOS_DEBUG, "FADT found at %p\n", fadt);
565 facs = (acpi_facs_t *)fadt->firmware_ctrl;
568 printk(BIOS_DEBUG, "No FACS found, wake up from S3 not possible.\n");
572 printk(BIOS_DEBUG, "FACS found at %p\n", facs);
573 wake_vec = (void *) facs->firmware_waking_vector;
574 printk(BIOS_DEBUG, "OS waking vector is %p\n", wake_vec);
578 extern char *lowmem_backup;
579 extern char *lowmem_backup_ptr;
580 extern int lowmem_backup_size;
582 #define WAKEUP_BASE 0x600
584 void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32
585 backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
587 extern unsigned char __wakeup, __wakeup_size;
589 void acpi_jump_to_wakeup(void *vector)
591 u32 acpi_backup_memory = (u32) cbmem_find(CBMEM_ID_RESUME);
593 if (!acpi_backup_memory) {
594 printk(BIOS_WARNING, "ACPI: Backup memory missing. No S3 Resume.\n");
598 // FIXME this should go into the ACPI backup memory, too. No pork saussages.
599 /* just restore the SMP trampoline and continue with wakeup on assembly level */
600 memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
602 /* copy wakeup trampoline in place */
603 memcpy((void *)WAKEUP_BASE, &__wakeup, (size_t)&__wakeup_size);
605 acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);