2 * coreboot ACPI Table support
3 * written by Stefan Reinauer <stepan@openbios.org>
4 * Copyright (C) 2004 SUSE LINUX AG
5 * Copyright (C) 2005-2009 coresystems GmbH
7 * ACPI FADT, FACS, and DSDT table support added by
8 * Nick Barker <nick.barker9@btinternet.com>, and those portions
9 * (C) Copyright 2004 Nick Barker
11 * Copyright 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved.
12 * 2005.9 yhlu add SRAT table generation
16 * Each system port implementing ACPI has to provide two functions:
21 * See Kontron 986LCD-M port for a good example of an ACPI implementation
25 #include <console/console.h>
27 #include <arch/acpi.h>
28 #include <arch/acpigen.h>
29 #include <device/pci.h>
32 u8 acpi_checksum(u8 *table, u32 length)
43 * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum
46 void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
50 acpi_xsdt_t *xsdt = NULL;
52 /* The RSDT is mandatory ... */
53 rsdt = (acpi_rsdt_t *)rsdp->rsdt_address;
55 /* ... while the XSDT is not */
56 if (rsdp->xsdt_address) {
57 xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address);
60 /* This should always be MAX_ACPI_TABLES */
61 entries_num = ARRAY_SIZE(rsdt->entry);
63 for (i = 0; i < entries_num; i++) {
64 if(rsdt->entry[i] == 0)
68 if (i >= entries_num) {
69 printk_err("ACPI: Error: Could not add ACPI table, too many tables.\n");
73 /* Add table to the RSDT */
74 rsdt->entry[i] = (u32)table;
76 /* Fix RSDT length or the kernel will assume invalid entries */
77 rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
79 /* Re-calculate checksum */
80 rsdt->header.checksum = 0; /* Hope this won't get optimized away */
81 rsdt->header.checksum = acpi_checksum((u8 *)rsdt,
84 /* And now the same thing for the XSDT. We use the same index as for
85 * now we want the XSDT and RSDT to always be in sync in coreboot.
88 /* Add table to the XSDT */
89 xsdt->entry[i]=(u64)(u32)table;
92 xsdt->header.length = sizeof(acpi_header_t) +
93 (sizeof(u64) * (i+1));
95 /* Re-calculate checksum */
96 xsdt->header.checksum=0;
97 xsdt->header.checksum=acpi_checksum((u8 *)xsdt,
101 printk_debug("ACPI: added table %d/%d Length now %d\n",
102 i+1, entries_num, rsdt->header.length);
105 int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
107 mmconfig->base_address = base;
108 mmconfig->base_reserved = 0;
109 mmconfig->pci_segment_group_number = seg_nr;
110 mmconfig->start_bus_number = start;
111 mmconfig->end_bus_number = end;
112 return (sizeof(acpi_mcfg_mmconfig_t));
115 int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
118 lapic->length=sizeof(acpi_madt_lapic_t);
121 lapic->processor_id=cpu;
124 return(lapic->length);
127 unsigned long acpi_create_madt_lapics(unsigned long current)
132 for(cpu = all_devices; cpu; cpu = cpu->next) {
133 if ((cpu->path.type != DEVICE_PATH_APIC) ||
134 (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
140 current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
146 int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
149 ioapic->length=sizeof(acpi_madt_ioapic_t);
150 ioapic->reserved=0x00;
151 ioapic->gsi_base=gsi_base;
153 ioapic->ioapic_id=id;
154 ioapic->ioapic_addr=addr;
156 return(ioapic->length);
159 int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride,
160 u8 bus, u8 source, u32 gsirq, u16 flags)
163 irqoverride->length=sizeof(acpi_madt_irqoverride_t);
164 irqoverride->bus=bus;
165 irqoverride->source=source;
166 irqoverride->gsirq=gsirq;
167 irqoverride->flags=flags;
169 return(irqoverride->length);
172 int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
176 lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t);
178 lapic_nmi->flags=flags;
179 lapic_nmi->processor_id=cpu;
180 lapic_nmi->lint=lint;
182 return(lapic_nmi->length);
185 void acpi_create_madt(acpi_madt_t *madt)
187 #define LOCAL_APIC_ADDR 0xfee00000ULL
189 acpi_header_t *header=&(madt->header);
190 unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t);
192 memset((void *)madt, 0, sizeof(acpi_madt_t));
194 /* fill out header fields */
195 memcpy(header->signature, "APIC", 4);
196 memcpy(header->oem_id, OEM_ID, 6);
197 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
198 memcpy(header->asl_compiler_id, ASLC, 4);
200 header->length = sizeof(acpi_madt_t);
201 header->revision = 1;
203 madt->lapic_addr= LOCAL_APIC_ADDR;
204 madt->flags = 0x1; /* PCAT_COMPAT */
206 current = acpi_fill_madt(current);
208 /* recalculate length */
209 header->length= current - (unsigned long)madt;
211 header->checksum = acpi_checksum((void *)madt, header->length);
214 void acpi_create_mcfg(acpi_mcfg_t *mcfg)
217 acpi_header_t *header=&(mcfg->header);
218 unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
220 memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
222 /* fill out header fields */
223 memcpy(header->signature, "MCFG", 4);
224 memcpy(header->oem_id, OEM_ID, 6);
225 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
226 memcpy(header->asl_compiler_id, ASLC, 4);
228 header->length = sizeof(acpi_mcfg_t);
229 header->revision = 1;
231 current = acpi_fill_mcfg(current);
233 /* recalculate length */
234 header->length= current - (unsigned long)mcfg;
236 header->checksum = acpi_checksum((void *)mcfg, header->length);
239 /* this can be overriden by platform ACPI setup code,
240 * if it calls acpi_create_ssdt_generator
242 unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
243 const char *oem_table_id) {
247 void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
249 unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
250 memset((void *)ssdt, 0, sizeof(acpi_header_t));
251 memcpy(&ssdt->signature, "SSDT", 4);
253 memcpy(&ssdt->oem_id, OEM_ID, 6);
254 memcpy(&ssdt->oem_table_id, oem_table_id, 8);
255 ssdt->oem_revision = 42;
256 memcpy(&ssdt->asl_compiler_id, "CORE", 4);
257 ssdt->asl_compiler_revision = 42;
258 ssdt->length = sizeof(acpi_header_t);
260 acpigen_set_current((char *) current);
261 current = acpi_fill_ssdt_generator(current, oem_table_id);
263 /* recalculate length */
264 ssdt->length = current - (unsigned long)ssdt;
265 ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
268 int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
270 memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
272 lapic->length=sizeof(acpi_srat_lapic_t);
275 lapic->proximity_domain_7_0 = node;
278 return(lapic->length);
281 int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek,u32 sizek, u32 flags)
284 mem->length=sizeof(acpi_srat_mem_t);
286 mem->base_address_low = (basek<<10);
287 mem->base_address_high = (basek>>(32-10));
289 mem->length_low = (sizek<<10);
290 mem->length_high = (sizek>>(32-10));
292 mem->proximity_domain = node;
299 void acpi_create_srat(acpi_srat_t *srat)
302 acpi_header_t *header=&(srat->header);
303 unsigned long current=(unsigned long)srat+sizeof(acpi_srat_t);
305 memset((void *)srat, 0, sizeof(acpi_srat_t));
307 /* fill out header fields */
308 memcpy(header->signature, "SRAT", 4);
309 memcpy(header->oem_id, OEM_ID, 6);
310 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
311 memcpy(header->asl_compiler_id, ASLC, 4);
313 header->length = sizeof(acpi_srat_t);
314 header->revision = 1;
316 srat->resv = 0x1; /* BACK COMP */
318 current = acpi_fill_srat(current);
320 /* recalculate length */
321 header->length= current - (unsigned long)srat;
323 header->checksum = acpi_checksum((void *)srat, header->length);
326 void acpi_create_slit(acpi_slit_t *slit)
329 acpi_header_t *header=&(slit->header);
330 unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
332 memset((void *)slit, 0, sizeof(acpi_slit_t));
334 /* fill out header fields */
335 memcpy(header->signature, "SLIT", 4);
336 memcpy(header->oem_id, OEM_ID, 6);
337 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
338 memcpy(header->asl_compiler_id, ASLC, 4);
340 header->length = sizeof(acpi_slit_t);
341 header->revision = 1;
343 current = acpi_fill_slit(current);
345 /* recalculate length */
346 header->length= current - (unsigned long)slit;
348 header->checksum = acpi_checksum((void *)slit, header->length);
351 void acpi_create_hpet(acpi_hpet_t *hpet)
353 #define HPET_ADDR 0xfed00000ULL
354 acpi_header_t *header=&(hpet->header);
355 acpi_addr_t *addr=&(hpet->addr);
357 memset((void *)hpet, 0, sizeof(acpi_hpet_t));
359 /* fill out header fields */
360 memcpy(header->signature, "HPET", 4);
361 memcpy(header->oem_id, OEM_ID, 6);
362 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
363 memcpy(header->asl_compiler_id, ASLC, 4);
365 header->length = sizeof(acpi_hpet_t);
366 header->revision = 1;
368 /* fill out HPET address */
369 addr->space_id = 0; /* Memory */
370 addr->bit_width = 64;
371 addr->bit_offset = 0;
372 addr->addrl = HPET_ADDR & 0xffffffff;
373 addr->addrh = HPET_ADDR >> 32;
375 hpet->id = 0x102282a0; /* AMD ? */
377 hpet->min_tick = 4096;
379 header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
381 void acpi_create_facs(acpi_facs_t *facs)
384 memset( (void *)facs,0, sizeof(acpi_facs_t));
386 memcpy(facs->signature, "FACS", 4);
387 facs->length = sizeof(acpi_facs_t);
388 facs->hardware_signature = 0;
389 facs->firmware_waking_vector = 0;
390 facs->global_lock = 0;
392 facs->x_firmware_waking_vector_l = 0;
393 facs->x_firmware_waking_vector_h = 0;
397 void acpi_write_rsdt(acpi_rsdt_t *rsdt)
399 acpi_header_t *header=&(rsdt->header);
401 /* fill out header fields */
402 memcpy(header->signature, "RSDT", 4);
403 memcpy(header->oem_id, OEM_ID, 6);
404 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
405 memcpy(header->asl_compiler_id, ASLC, 4);
407 header->length = sizeof(acpi_rsdt_t);
408 header->revision = 1;
410 /* fill out entries */
412 // entries are filled in later, we come with an empty set.
416 header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
419 void acpi_write_xsdt(acpi_xsdt_t *xsdt)
421 acpi_header_t *header=&(xsdt->header);
423 /* fill out header fields */
424 memcpy(header->signature, "XSDT", 4);
425 memcpy(header->oem_id, OEM_ID, 6);
426 memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
427 memcpy(header->asl_compiler_id, ASLC, 4);
429 header->length = sizeof(acpi_xsdt_t);
430 header->revision = 1;
432 /* fill out entries */
434 // entries are filled in later, we come with an empty set.
438 header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t));
441 void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt)
443 memset(rsdp, 0, sizeof(acpi_rsdp_t));
444 memcpy(rsdp->signature, RSDP_SIG, 8);
445 memcpy(rsdp->oem_id, OEM_ID, 6);
446 rsdp->length = sizeof(acpi_rsdp_t);
447 rsdp->rsdt_address = (u32)rsdt;
448 /* Some OSes expect an XSDT to be present for RSD PTR
449 * revisions >= 2. If we don't have an ACPI XSDT, force
450 * ACPI 1.0 (and thus RSD PTR revision 0)
455 rsdp->xsdt_address = (u64)(u32)xsdt;
458 rsdp->checksum = acpi_checksum((void *)rsdp, 20);
459 rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
462 #if CONFIG_HAVE_ACPI_RESUME == 1
463 void suspend_resume(void)
468 #if CONFIG_MEM_TRAIN_SEQ != 0
469 #error "So far it works on AMD and CONFIG_MEM_TRAIN_SEQ == 0"
472 #if CONFIG_RAMBASE < 0x1F00000
473 #error "For ACPI RESUME you need to have CONFIG_RAMBASE at least 31MB"
474 #error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
475 #error "And coreboot memory reserved in mainboard.c"
478 /* if we happen to be resuming find wakeup vector and jump to OS */
479 wake_vec = acpi_find_wakeup_vector();
481 acpi_jump_to_wakeup(wake_vec);
484 /* this is to be filled by SB code - startup value what was found */
485 u8 acpi_slp_type = 0;
487 int acpi_is_wakeup(void)
489 return (acpi_slp_type == 3);
492 static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
494 if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
497 printk_debug("Looking on %p for valid checksum\n", rsdp);
499 if (acpi_checksum((void *)rsdp, 20) != 0)
501 printk_debug("Checksum 1 passed\n");
503 if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
507 printk_debug("Checksum 2 passed all OK\n");
512 static acpi_rsdp_t *rsdp;
514 void *acpi_get_wakeup_rsdp(void)
519 void *acpi_find_wakeup_vector(void)
531 if (!acpi_is_wakeup())
534 printk_debug("Trying to find the wakeup vector ...\n");
537 for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
538 if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
545 printk_debug("RSDP found at %p\n", rsdp);
546 rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
548 end = (char *) rsdt + rsdt->header.length;
549 printk_debug("RSDT found at %p ends at %p\n", rsdt, end);
551 for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
552 fadt = (acpi_fadt_t *) rsdt->entry[i];
553 if (strncmp((char *)fadt, "FACP", 4) == 0)
561 printk_debug("FADT found at %p\n", fadt);
562 facs = (acpi_facs_t *)fadt->firmware_ctrl;
565 printk_debug("No FACS found, wake up from S3 not possible.\n");
569 printk_debug("FACS found at %p\n", facs);
570 wake_vec = (void *) facs->firmware_waking_vector;
571 printk_debug("OS waking vector is %p\n", wake_vec);
575 extern char *lowmem_backup;
576 extern char *lowmem_backup_ptr;
577 extern int lowmem_backup_size;
579 #define WAKEUP_BASE 0x600
581 void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32
582 backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
584 extern unsigned char __wakeup, __wakeup_size;
586 void acpi_jump_to_wakeup(void *vector)
588 u32 acpi_backup_memory = (u32) cbmem_find(CBMEM_ID_RESUME);
590 if (!acpi_backup_memory) {
591 printk(BIOS_WARNING, "ACPI: Backup memory missing. No S3 Resume.\n");
595 // FIXME this should go into the ACPI backup memory, too. No pork saussages.
596 /* just restore the SMP trampoline and continue with wakeup on assembly level */
597 memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
599 /* copy wakeup trampoline in place */
600 memcpy(WAKEUP_BASE, &__wakeup, &__wakeup_size);
602 acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);