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 AMD Solo, Island Aruma or Via Epia-M port for more details.
24 #include <console/console.h>
26 #include <arch/acpi.h>
27 #include <arch/acpigen.h>
28 #include <device/pci.h>
30 u8 acpi_checksum(u8 *table, u32 length)
41 * add an acpi table to rsdt structure, and recalculate checksum
44 void acpi_add_table(acpi_rsdt_t *rsdt, void *table)
48 int entries_num = ARRAY_SIZE(rsdt->entry);
50 for (i=0; i<entries_num; i++) {
51 if(rsdt->entry[i]==0) {
52 rsdt->entry[i]=(u32)table;
53 /* fix length to stop kernel winging about invalid entries */
54 rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
56 /* hope this won't get optimized away */
57 rsdt->header.checksum=0;
58 rsdt->header.checksum=acpi_checksum((u8 *)rsdt,
61 printk_debug("ACPI: added table %d/%d Length now %d\n",i+1, entries_num, rsdt->header.length);
66 printk_warning("ACPI: could not add ACPI table to RSDT. failed.\n");
69 int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
71 mmconfig->base_address = base;
72 mmconfig->base_reserved = 0;
73 mmconfig->pci_segment_group_number = seg_nr;
74 mmconfig->start_bus_number = start;
75 mmconfig->end_bus_number = end;
76 return (sizeof(acpi_mcfg_mmconfig_t));
79 int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
82 lapic->length=sizeof(acpi_madt_lapic_t);
85 lapic->processor_id=cpu;
88 return(lapic->length);
91 int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
94 ioapic->length=sizeof(acpi_madt_ioapic_t);
95 ioapic->reserved=0x00;
96 ioapic->gsi_base=gsi_base;
99 ioapic->ioapic_addr=addr;
101 return(ioapic->length);
104 int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride,
105 u8 bus, u8 source, u32 gsirq, u16 flags)
108 irqoverride->length=sizeof(acpi_madt_irqoverride_t);
109 irqoverride->bus=bus;
110 irqoverride->source=source;
111 irqoverride->gsirq=gsirq;
112 irqoverride->flags=flags;
114 return(irqoverride->length);
117 int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
121 lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t);
123 lapic_nmi->flags=flags;
124 lapic_nmi->processor_id=cpu;
125 lapic_nmi->lint=lint;
127 return(lapic_nmi->length);
130 void acpi_create_madt(acpi_madt_t *madt)
132 #define LOCAL_APIC_ADDR 0xfee00000ULL
134 acpi_header_t *header=&(madt->header);
135 unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t);
137 memset((void *)madt, 0, sizeof(acpi_madt_t));
139 /* fill out header fields */
140 memcpy(header->signature, MADT_NAME, 4);
141 memcpy(header->oem_id, OEM_ID, 6);
142 memcpy(header->oem_table_id, MADT_TABLE, 8);
143 memcpy(header->asl_compiler_id, ASLC, 4);
145 header->length = sizeof(acpi_madt_t);
146 header->revision = 1;
148 madt->lapic_addr= LOCAL_APIC_ADDR;
149 madt->flags = 0x1; /* PCAT_COMPAT */
151 current = acpi_fill_madt(current);
153 /* recalculate length */
154 header->length= current - (unsigned long)madt;
156 header->checksum = acpi_checksum((void *)madt, header->length);
159 void acpi_create_mcfg(acpi_mcfg_t *mcfg)
162 acpi_header_t *header=&(mcfg->header);
163 unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
165 memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
167 /* fill out header fields */
168 memcpy(header->signature, MCFG_NAME, 4);
169 memcpy(header->oem_id, OEM_ID, 6);
170 memcpy(header->oem_table_id, MCFG_TABLE, 8);
171 memcpy(header->asl_compiler_id, ASLC, 4);
173 header->length = sizeof(acpi_mcfg_t);
174 header->revision = 1;
176 current = acpi_fill_mcfg(current);
178 /* recalculate length */
179 header->length= current - (unsigned long)mcfg;
181 header->checksum = acpi_checksum((void *)mcfg, header->length);
184 /* this can be overriden by platform ACPI setup code,
185 if it calls acpi_create_ssdt_generator */
186 unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
187 char *oem_table_id) {
191 void acpi_create_ssdt_generator(acpi_header_t *ssdt, char *oem_table_id)
193 unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
194 memset((void *)ssdt, 0, sizeof(acpi_header_t));
195 memcpy(&ssdt->signature, SSDT_NAME, 4);
197 memcpy(&ssdt->oem_id, OEM_ID, 6);
198 memcpy(&ssdt->oem_table_id, oem_table_id, 8);
199 ssdt->oem_revision = 42;
200 memcpy(&ssdt->asl_compiler_id, "GENAML", 4);
201 ssdt->asl_compiler_revision = 42;
202 ssdt->length = sizeof(acpi_header_t);
204 acpigen_set_current((char *) current);
205 current = acpi_fill_ssdt_generator(current, oem_table_id);
207 /* recalculate length */
208 ssdt->length = current - (unsigned long)ssdt;
209 ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
212 int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
214 memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
216 lapic->length=sizeof(acpi_srat_lapic_t);
219 lapic->proximity_domain_7_0 = node;
222 return(lapic->length);
225 int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek,u32 sizek, u32 flags)
228 mem->length=sizeof(acpi_srat_mem_t);
230 mem->base_address_low = (basek<<10);
231 mem->base_address_high = (basek>>(32-10));
233 mem->length_low = (sizek<<10);
234 mem->length_high = (sizek>>(32-10));
236 mem->proximity_domain = node;
243 void acpi_create_srat(acpi_srat_t *srat)
246 acpi_header_t *header=&(srat->header);
247 unsigned long current=(unsigned long)srat+sizeof(acpi_srat_t);
249 memset((void *)srat, 0, sizeof(acpi_srat_t));
251 /* fill out header fields */
252 memcpy(header->signature, SRAT_NAME, 4);
253 memcpy(header->oem_id, OEM_ID, 6);
254 memcpy(header->oem_table_id, SRAT_TABLE, 8);
255 memcpy(header->asl_compiler_id, ASLC, 4);
257 header->length = sizeof(acpi_srat_t);
258 header->revision = 1;
260 srat->resv = 0x1; /* BACK COMP */
262 current = acpi_fill_srat(current);
264 /* recalculate length */
265 header->length= current - (unsigned long)srat;
267 header->checksum = acpi_checksum((void *)srat, header->length);
270 void acpi_create_slit(acpi_slit_t *slit)
273 acpi_header_t *header=&(slit->header);
274 unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
276 memset((void *)slit, 0, sizeof(acpi_slit_t));
278 /* fill out header fields */
279 memcpy(header->signature, SLIT_NAME, 4);
280 memcpy(header->oem_id, OEM_ID, 6);
281 memcpy(header->oem_table_id, SLIT_TABLE, 8);
282 memcpy(header->asl_compiler_id, ASLC, 4);
284 header->length = sizeof(acpi_slit_t);
285 header->revision = 1;
287 current = acpi_fill_slit(current);
289 /* recalculate length */
290 header->length= current - (unsigned long)slit;
292 header->checksum = acpi_checksum((void *)slit, header->length);
295 void acpi_create_hpet(acpi_hpet_t *hpet)
297 #define HPET_ADDR 0xfed00000ULL
298 acpi_header_t *header=&(hpet->header);
299 acpi_addr_t *addr=&(hpet->addr);
301 memset((void *)hpet, 0, sizeof(acpi_hpet_t));
303 /* fill out header fields */
304 memcpy(header->signature, HPET_NAME, 4);
305 memcpy(header->oem_id, OEM_ID, 6);
306 memcpy(header->oem_table_id, HPET_TABLE, 8);
307 memcpy(header->asl_compiler_id, ASLC, 4);
309 header->length = sizeof(acpi_hpet_t);
310 header->revision = 1;
312 /* fill out HPET address */
313 addr->space_id = 0; /* Memory */
314 addr->bit_width = 64;
315 addr->bit_offset = 0;
316 addr->addrl = HPET_ADDR & 0xffffffff;
317 addr->addrh = HPET_ADDR >> 32;
319 hpet->id = 0x102282a0; /* AMD ? */
321 hpet->min_tick = 4096;
323 header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
325 void acpi_create_facs(acpi_facs_t *facs)
328 memset( (void *)facs,0, sizeof(acpi_facs_t));
330 memcpy(facs->signature, FACS_NAME, 4);
331 facs->length = sizeof(acpi_facs_t);
332 facs->hardware_signature = 0;
333 facs->firmware_waking_vector = 0;
334 facs->global_lock = 0;
336 facs->x_firmware_waking_vector_l = 0;
337 facs->x_firmware_waking_vector_h = 0;
341 void acpi_write_rsdt(acpi_rsdt_t *rsdt)
343 acpi_header_t *header=&(rsdt->header);
345 /* fill out header fields */
346 memcpy(header->signature, RSDT_NAME, 4);
347 memcpy(header->oem_id, OEM_ID, 6);
348 memcpy(header->oem_table_id, RSDT_TABLE, 8);
349 memcpy(header->asl_compiler_id, ASLC, 4);
351 header->length = sizeof(acpi_rsdt_t);
352 header->revision = 1;
354 /* fill out entries */
356 // entries are filled in later, we come with an empty set.
360 header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
363 void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt)
365 memcpy(rsdp->signature, RSDP_SIG, 8);
366 memcpy(rsdp->oem_id, OEM_ID, 6);
367 rsdp->length = sizeof(acpi_rsdp_t);
368 rsdp->rsdt_address = (u32)rsdt;
370 rsdp->checksum = acpi_checksum((void *)rsdp, 20);
371 rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
374 #if HAVE_ACPI_RESUME == 1
375 void suspend_resume(void)
380 #if MEM_TRAIN_SEQ != 0
381 #error "So far it works on AMD and MEM_TRAIN_SEQ == 0"
384 #if _RAMBASE < 0x1F00000
385 #error "For ACPI RESUME you need to have _RAMBASE at least 31MB"
386 #error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
387 #error "And coreboot memory reserved in mainboard.c"
390 /* if we happen to be resuming find wakeup vector and jump to OS */
391 wake_vec = acpi_find_wakeup_vector();
393 acpi_jump_to_wakeup(wake_vec);
396 /* this is to be filled by SB code - startup value what was found */
397 u8 acpi_slp_type = 0;
399 int acpi_get_sleep_type(void)
401 return acpi_slp_type;
404 int acpi_is_wakeup(void)
406 return (acpi_slp_type == 3);
409 static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
411 if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
414 printk_debug("Looking on %p for valid checksum\n", rsdp);
416 if (acpi_checksum((void *)rsdp, 20) != 0)
418 printk_debug("Checksum 1 passed\n");
420 if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
424 printk_debug("Checksum 2 passed all OK\n");
429 static acpi_rsdp_t *rsdp;
431 void *acpi_get_wakeup_rsdp(void)
436 void *acpi_find_wakeup_vector(void)
448 if (!acpi_is_wakeup())
451 printk_debug("Trying to find the wakeup vector ...\n");
454 for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
455 if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
462 printk_debug("RSDP found at %p\n", rsdp);
463 rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
465 end = (char *) rsdt + rsdt->header.length;
466 printk_debug("RSDT found at %p ends at %p\n", rsdt, end);
468 for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
469 fadt = (acpi_fadt_t *) rsdt->entry[i];
470 if (strncmp((char *)fadt, FADT_NAME, sizeof(FADT_NAME) - 1) == 0)
478 printk_debug("FADT found at %p\n", fadt);
479 facs = fadt->firmware_ctrl;
482 printk_debug("No FACS found, wake up from S3 not possible.\n");
486 printk_debug("FACS found at %p\n", facs);
487 wake_vec = (void *) facs->firmware_waking_vector;
488 printk_debug("OS waking vector is %p\n", wake_vec);
492 extern char *lowmem_backup;
493 extern char *lowmem_backup_ptr;
494 extern int lowmem_backup_size;
496 void acpi_jump_to_wakeup(void *vector)
498 /* just restore the SMP trampoline and continue with wakeup on assembly level */
499 memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
500 acpi_jmp_to_realm_wakeup((u32) vector);