blob: beef891424d9d6a763228653c4fef8e79aec8180 [file] [log] [blame]
/*
* coreboot ACPI Table support
* written by Stefan Reinauer <stepan@openbios.org>
* Copyright (C) 2004 SUSE LINUX AG
* Copyright (C) 2005-2009 coresystems GmbH
*
* ACPI FADT, FACS, and DSDT table support added by
* Nick Barker <nick.barker9@btinternet.com>, and those portions
* (C) Copyright 2004 Nick Barker
*
* Copyright 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved.
* 2005.9 yhlu add SRAT table generation
*/
/*
* Each system port implementing ACPI has to provide two functions:
*
* write_acpi_tables()
* acpi_dump_apics()
*
* See Kontron 986LCD-M port for a good example of an ACPI implementation
* in coreboot.
*/
#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
#include <arch/acpigen.h>
#include <device/pci.h>
#include <cbmem.h>
u8 acpi_checksum(u8 *table, u32 length)
{
u8 ret=0;
while (length--) {
ret += *table;
table++;
}
return -ret;
}
/**
* Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum
*/
void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
{
int i, entries_num;
acpi_rsdt_t *rsdt;
acpi_xsdt_t *xsdt = NULL;
/* The RSDT is mandatory ... */
rsdt = (acpi_rsdt_t *)rsdp->rsdt_address;
/* ... while the XSDT is not */
if (rsdp->xsdt_address) {
xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address);
}
/* This should always be MAX_ACPI_TABLES */
entries_num = ARRAY_SIZE(rsdt->entry);
for (i = 0; i < entries_num; i++) {
if(rsdt->entry[i] == 0)
break;
}
if (i >= entries_num) {
printk_err("ACPI: Error: Could not add ACPI table, too many tables.\n");
return;
}
/* Add table to the RSDT */
rsdt->entry[i] = (u32)table;
/* Fix RSDT length or the kernel will assume invalid entries */
rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
/* Re-calculate checksum */
rsdt->header.checksum = 0; /* Hope this won't get optimized away */
rsdt->header.checksum = acpi_checksum((u8 *)rsdt,
rsdt->header.length);
/* And now the same thing for the XSDT. We use the same index as for
* now we want the XSDT and RSDT to always be in sync in coreboot.
*/
if (xsdt) {
/* Add table to the XSDT */
xsdt->entry[i]=(u64)(u32)table;
/* Fix XSDT length */
xsdt->header.length = sizeof(acpi_header_t) +
(sizeof(u64) * (i+1));
/* Re-calculate checksum */
xsdt->header.checksum=0;
xsdt->header.checksum=acpi_checksum((u8 *)xsdt,
xsdt->header.length);
}
printk_debug("ACPI: added table %d/%d Length now %d\n",
i+1, entries_num, rsdt->header.length);
}
int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
{
mmconfig->base_address = base;
mmconfig->base_reserved = 0;
mmconfig->pci_segment_group_number = seg_nr;
mmconfig->start_bus_number = start;
mmconfig->end_bus_number = end;
return (sizeof(acpi_mcfg_mmconfig_t));
}
int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
{
lapic->type=0;
lapic->length=sizeof(acpi_madt_lapic_t);
lapic->flags=1;
lapic->processor_id=cpu;
lapic->apic_id=apic;
return(lapic->length);
}
unsigned long acpi_create_madt_lapics(unsigned long current)
{
device_t cpu;
int cpu_index = 0;
for(cpu = all_devices; cpu; cpu = cpu->next) {
if ((cpu->path.type != DEVICE_PATH_APIC) ||
(cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
continue;
}
if (!cpu->enabled) {
continue;
}
current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
cpu_index++;
}
return current;
}
int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
{
ioapic->type=1;
ioapic->length=sizeof(acpi_madt_ioapic_t);
ioapic->reserved=0x00;
ioapic->gsi_base=gsi_base;
ioapic->ioapic_id=id;
ioapic->ioapic_addr=addr;
return(ioapic->length);
}
int acpi_create_madt_irqoverride(acpi_madt_irqoverride_t *irqoverride,
u8 bus, u8 source, u32 gsirq, u16 flags)
{
irqoverride->type=2;
irqoverride->length=sizeof(acpi_madt_irqoverride_t);
irqoverride->bus=bus;
irqoverride->source=source;
irqoverride->gsirq=gsirq;
irqoverride->flags=flags;
return(irqoverride->length);
}
int acpi_create_madt_lapic_nmi(acpi_madt_lapic_nmi_t *lapic_nmi, u8 cpu,
u16 flags, u8 lint)
{
lapic_nmi->type=4;
lapic_nmi->length=sizeof(acpi_madt_lapic_nmi_t);
lapic_nmi->flags=flags;
lapic_nmi->processor_id=cpu;
lapic_nmi->lint=lint;
return(lapic_nmi->length);
}
void acpi_create_madt(acpi_madt_t *madt)
{
#define LOCAL_APIC_ADDR 0xfee00000ULL
acpi_header_t *header=&(madt->header);
unsigned long current=(unsigned long)madt+sizeof(acpi_madt_t);
memset((void *)madt, 0, sizeof(acpi_madt_t));
/* fill out header fields */
memcpy(header->signature, "APIC", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_madt_t);
header->revision = 1;
madt->lapic_addr= LOCAL_APIC_ADDR;
madt->flags = 0x1; /* PCAT_COMPAT */
current = acpi_fill_madt(current);
/* recalculate length */
header->length= current - (unsigned long)madt;
header->checksum = acpi_checksum((void *)madt, header->length);
}
void acpi_create_mcfg(acpi_mcfg_t *mcfg)
{
acpi_header_t *header=&(mcfg->header);
unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
/* fill out header fields */
memcpy(header->signature, "MCFG", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_mcfg_t);
header->revision = 1;
current = acpi_fill_mcfg(current);
/* recalculate length */
header->length= current - (unsigned long)mcfg;
header->checksum = acpi_checksum((void *)mcfg, header->length);
}
/* this can be overriden by platform ACPI setup code,
* if it calls acpi_create_ssdt_generator
*/
unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
const char *oem_table_id) {
return current;
}
void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
{
unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
memset((void *)ssdt, 0, sizeof(acpi_header_t));
memcpy(&ssdt->signature, "SSDT", 4);
ssdt->revision = 2;
memcpy(&ssdt->oem_id, OEM_ID, 6);
memcpy(&ssdt->oem_table_id, oem_table_id, 8);
ssdt->oem_revision = 42;
memcpy(&ssdt->asl_compiler_id, "CORE", 4);
ssdt->asl_compiler_revision = 42;
ssdt->length = sizeof(acpi_header_t);
acpigen_set_current((char *) current);
current = acpi_fill_ssdt_generator(current, oem_table_id);
/* recalculate length */
ssdt->length = current - (unsigned long)ssdt;
ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
}
int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
{
memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
lapic->type=0;
lapic->length=sizeof(acpi_srat_lapic_t);
lapic->flags=1;
lapic->proximity_domain_7_0 = node;
lapic->apic_id=apic;
return(lapic->length);
}
int acpi_create_srat_mem(acpi_srat_mem_t *mem, u8 node, u32 basek,u32 sizek, u32 flags)
{
mem->type=1;
mem->length=sizeof(acpi_srat_mem_t);
mem->base_address_low = (basek<<10);
mem->base_address_high = (basek>>(32-10));
mem->length_low = (sizek<<10);
mem->length_high = (sizek>>(32-10));
mem->proximity_domain = node;
mem->flags = flags;
return(mem->length);
}
void acpi_create_srat(acpi_srat_t *srat)
{
acpi_header_t *header=&(srat->header);
unsigned long current=(unsigned long)srat+sizeof(acpi_srat_t);
memset((void *)srat, 0, sizeof(acpi_srat_t));
/* fill out header fields */
memcpy(header->signature, "SRAT", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_srat_t);
header->revision = 1;
srat->resv = 0x1; /* BACK COMP */
current = acpi_fill_srat(current);
/* recalculate length */
header->length= current - (unsigned long)srat;
header->checksum = acpi_checksum((void *)srat, header->length);
}
void acpi_create_slit(acpi_slit_t *slit)
{
acpi_header_t *header=&(slit->header);
unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
memset((void *)slit, 0, sizeof(acpi_slit_t));
/* fill out header fields */
memcpy(header->signature, "SLIT", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_slit_t);
header->revision = 1;
current = acpi_fill_slit(current);
/* recalculate length */
header->length= current - (unsigned long)slit;
header->checksum = acpi_checksum((void *)slit, header->length);
}
void acpi_create_hpet(acpi_hpet_t *hpet)
{
#define HPET_ADDR 0xfed00000ULL
acpi_header_t *header=&(hpet->header);
acpi_addr_t *addr=&(hpet->addr);
memset((void *)hpet, 0, sizeof(acpi_hpet_t));
/* fill out header fields */
memcpy(header->signature, "HPET", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_hpet_t);
header->revision = 1;
/* fill out HPET address */
addr->space_id = 0; /* Memory */
addr->bit_width = 64;
addr->bit_offset = 0;
addr->addrl = HPET_ADDR & 0xffffffff;
addr->addrh = HPET_ADDR >> 32;
hpet->id = 0x102282a0; /* AMD ? */
hpet->number = 0;
hpet->min_tick = 4096;
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
}
void acpi_create_facs(acpi_facs_t *facs)
{
memset( (void *)facs,0, sizeof(acpi_facs_t));
memcpy(facs->signature, "FACS", 4);
facs->length = sizeof(acpi_facs_t);
facs->hardware_signature = 0;
facs->firmware_waking_vector = 0;
facs->global_lock = 0;
facs->flags = 0;
facs->x_firmware_waking_vector_l = 0;
facs->x_firmware_waking_vector_h = 0;
facs->version = 1;
}
void acpi_write_rsdt(acpi_rsdt_t *rsdt)
{
acpi_header_t *header=&(rsdt->header);
/* fill out header fields */
memcpy(header->signature, "RSDT", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_rsdt_t);
header->revision = 1;
/* fill out entries */
// entries are filled in later, we come with an empty set.
/* fix checksum */
header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
}
void acpi_write_xsdt(acpi_xsdt_t *xsdt)
{
acpi_header_t *header=&(xsdt->header);
/* fill out header fields */
memcpy(header->signature, "XSDT", 4);
memcpy(header->oem_id, OEM_ID, 6);
memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_xsdt_t);
header->revision = 1;
/* fill out entries */
// entries are filled in later, we come with an empty set.
/* fix checksum */
header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t));
}
void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt)
{
memset(rsdp, 0, sizeof(acpi_rsdp_t));
memcpy(rsdp->signature, RSDP_SIG, 8);
memcpy(rsdp->oem_id, OEM_ID, 6);
rsdp->length = sizeof(acpi_rsdp_t);
rsdp->rsdt_address = (u32)rsdt;
/* Some OSes expect an XSDT to be present for RSD PTR
* revisions >= 2. If we don't have an ACPI XSDT, force
* ACPI 1.0 (and thus RSD PTR revision 0)
*/
if (xsdt == NULL) {
rsdp->revision = 0;
} else {
rsdp->xsdt_address = (u64)(u32)xsdt;
rsdp->revision = 2;
}
rsdp->checksum = acpi_checksum((void *)rsdp, 20);
rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
}
#if CONFIG_HAVE_ACPI_RESUME == 1
void suspend_resume(void)
{
void *wake_vec;
#if 0
#if CONFIG_MEM_TRAIN_SEQ != 0
#error "So far it works on AMD and CONFIG_MEM_TRAIN_SEQ == 0"
#endif
#if CONFIG_RAMBASE < 0x1F00000
#error "For ACPI RESUME you need to have CONFIG_RAMBASE at least 31MB"
#error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
#error "And coreboot memory reserved in mainboard.c"
#endif
#endif
/* if we happen to be resuming find wakeup vector and jump to OS */
wake_vec = acpi_find_wakeup_vector();
if (wake_vec)
acpi_jump_to_wakeup(wake_vec);
}
/* this is to be filled by SB code - startup value what was found */
u8 acpi_slp_type = 0;
int acpi_is_wakeup(void)
{
return (acpi_slp_type == 3);
}
static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
{
if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
return NULL;
printk_debug("Looking on %p for valid checksum\n", rsdp);
if (acpi_checksum((void *)rsdp, 20) != 0)
return NULL;
printk_debug("Checksum 1 passed\n");
if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
rsdp->length) != 0))
return NULL;
printk_debug("Checksum 2 passed all OK\n");
return rsdp;
}
static acpi_rsdp_t *rsdp;
void *acpi_get_wakeup_rsdp(void)
{
return rsdp;
}
void *acpi_find_wakeup_vector(void)
{
char *p, *end;
acpi_rsdt_t *rsdt;
acpi_facs_t *facs;
acpi_fadt_t *fadt;
void *wake_vec;
int i;
rsdp = NULL;
if (!acpi_is_wakeup())
return NULL;
printk_debug("Trying to find the wakeup vector ...\n");
/* find RSDP */
for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
break;
}
if (rsdp == NULL)
return NULL;
printk_debug("RSDP found at %p\n", rsdp);
rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
end = (char *) rsdt + rsdt->header.length;
printk_debug("RSDT found at %p ends at %p\n", rsdt, end);
for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
fadt = (acpi_fadt_t *) rsdt->entry[i];
if (strncmp((char *)fadt, "FACP", 4) == 0)
break;
fadt = NULL;
}
if (fadt == NULL)
return NULL;
printk_debug("FADT found at %p\n", fadt);
facs = (acpi_facs_t *)fadt->firmware_ctrl;
if (facs == NULL) {
printk_debug("No FACS found, wake up from S3 not possible.\n");
return NULL;
}
printk_debug("FACS found at %p\n", facs);
wake_vec = (void *) facs->firmware_waking_vector;
printk_debug("OS waking vector is %p\n", wake_vec);
return wake_vec;
}
extern char *lowmem_backup;
extern char *lowmem_backup_ptr;
extern int lowmem_backup_size;
#define WAKEUP_BASE 0x600
void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32
backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
extern unsigned char __wakeup, __wakeup_size;
void acpi_jump_to_wakeup(void *vector)
{
u32 acpi_backup_memory = (u32) cbmem_find(CBMEM_ID_RESUME);
if (!acpi_backup_memory) {
printk(BIOS_WARNING, "ACPI: Backup memory missing. No S3 Resume.\n");
return;
}
// FIXME this should go into the ACPI backup memory, too. No pork saussages.
/* just restore the SMP trampoline and continue with wakeup on assembly level */
memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
/* copy wakeup trampoline in place */
memcpy(WAKEUP_BASE, &__wakeup, &__wakeup_size);
acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
}
#endif