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|
/*
* This file is part of the coreboot project.
*
* 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
* Copyright (C) 2004 Nick Barker
*
* Copyright (C) 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>
#include <cpu/x86/lapic_def.h>
#if CONFIG_COLLECT_TIMESTAMPS
#include <timestamp.h>
#endif
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(BIOS_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(BIOS_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; /* Local APIC structure */
lapic->length = sizeof(acpi_madt_lapic_t);
lapic->flags = (1 << 0); /* Processor/LAPIC enabled */
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; /* I/O APIC structure */
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; /* Interrupt source override */
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; /* Local APIC NMI structure */
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)
{
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; /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */
madt->lapic_addr = LOCAL_APIC_ADDR;
madt->flags = 0x1; /* PCAT_COMPAT */
current = acpi_fill_madt(current);
/* (Re)calculate length and checksum. */
header->length = current - (unsigned long)madt;
header->checksum = acpi_checksum((void *)madt, header->length);
}
/* MCFG is defined in the PCI Firmware Specification 3.0. */
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);
/* (Re)calculate length and checksum. */
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; /* ACPI 1.0/2.0: ?, ACPI 3.0/4.0: 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, ASLC, 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);
/* (Re)calculate length and checksum. */
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; /* Processor local APIC/SAPIC affinity structure */
lapic->length = sizeof(acpi_srat_lapic_t);
lapic->flags = (1 << 0); /* Enabled (the use of this structure). */
lapic->proximity_domain_7_0 = node;
/* TODO: proximity_domain_31_8, local SAPIC EID, clock domain. */
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; /* Memory affinity structure */
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;
}
/* http://www.microsoft.com/whdc/system/sysinternals/sratdwn.mspx */
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; /* ACPI 1.0: N/A, 2.0: 1, 3.0: 2, 4.0: 3 */
srat->resv = 1; /* Spec: Reserved to 1 for backwards compatibility. */
current = acpi_fill_srat(current);
/* (Re)calculate length and checksum. */
header->length = current - (unsigned long)srat;
header->checksum = acpi_checksum((void *)srat, header->length);
}
/* http://h21007.www2.hp.com/portal/download/files/unprot/Itanium/slit.pdf */
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; /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */
current = acpi_fill_slit(current);
/* (Re)calculate length and checksum. */
header->length = current - (unsigned long)slit;
header->checksum = acpi_checksum((void *)slit, header->length);
}
/* http://www.intel.com/hardwaredesign/hpetspec_1.pdf */
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; /* Currently 1. Table added in ACPI 2.0. */
/* 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! FIXME */
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; /* ACPI 1.0: 0, ACPI 2.0/3.0: 1, ACPI 4.0: 2 */
}
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; /* ACPI 1.0/2.0/3.0/4.0: 1 */
/* 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; /* ACPI 1.0: N/A, 2.0/3.0/4.0: 1 */
/* 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;
/*
* Revision: ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2.
*
* 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;
}
/* Calculate checksums. */
rsdp->checksum = acpi_checksum((void *)rsdp, 20);
rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
}
unsigned long __attribute__((weak)) acpi_fill_hest(acpi_hest_t *hest)
{
return (unsigned long)hest;
}
unsigned long acpi_create_hest_error_source(acpi_hest_t *hest, acpi_hest_esd_t *esd, u16 type, void *data, u16 data_len)
{
acpi_header_t *header = &(hest->header);
acpi_hest_hen_t *hen;
void *pos;
u16 len;
pos = esd;
memset(pos, 0, sizeof(acpi_hest_esd_t));
len = 0;
esd->type = type; /* MCE */
esd->source_id = hest->error_source_count;
esd->flags = 0; /* FIRMWARE_FIRST */
esd->enabled = 1;
esd->prealloc_erecords = 1;
esd->max_section_per_record = 0x1;
len += sizeof(acpi_hest_esd_t);
pos = esd + 1;
switch (type) {
case 0: /* MCE */
break;
case 1: /* CMC */
hen = (acpi_hest_hen_t *) (pos);
memset(pos, 0, sizeof(acpi_hest_hen_t));
hen->type = 3; /* SCI? */
hen->length = sizeof(acpi_hest_hen_t);
hen->conf_we = 0; /* Configuration Write Enable. */
hen->poll_interval = 0;
hen->vector = 0;
hen->sw2poll_threshold_val = 0;
hen->sw2poll_threshold_win = 0;
hen->error_threshold_val = 0;
hen->error_threshold_win = 0;
len += sizeof(acpi_hest_hen_t);
pos = hen + 1;
break;
case 2: /* NMI */
case 6: /* AER Root Port */
case 7: /* AER Endpoint */
case 8: /* AER Bridge */
case 9: /* Generic Hardware Error Source. */
/* TODO: */
break;
default:
printk(BIOS_DEBUG, "Invalid type of Error Source.");
break;
}
hest->error_source_count ++;
memcpy(pos, data, data_len);
len += data_len;
header->length += len;
return len;
}
/* ACPI 4.0 */
void acpi_write_hest(acpi_hest_t *hest)
{
acpi_header_t *header = &(hest->header);
memset(hest, 0, sizeof(acpi_hest_t));
memcpy(header->signature, "HEST", 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_hest_t);
header->revision = 1;
acpi_fill_hest(hest);
/* Calculate checksums. */
header->checksum = acpi_checksum((void *)hest, header->length);
}
#if CONFIG_HAVE_ACPI_RESUME
void suspend_resume(void)
{
void *wake_vec;
/* If we happen to be resuming find wakeup vector and jump to OS. */
wake_vec = acpi_find_wakeup_vector();
if (wake_vec) {
/* Call mainboard resume handler first, if defined. */
if (mainboard_suspend_resume)
mainboard_suspend_resume();
acpi_jump_to_wakeup(wake_vec);
}
}
/* This is to be filled by SB code - startup value what was found. */
u8 acpi_slp_type = 0;
static int acpi_is_wakeup(void)
{
/* Both resume from S2 and resume from S3 restart at CPU reset */
return (acpi_slp_type == 3 || acpi_slp_type == 2);
}
static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
{
if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
return NULL;
printk(BIOS_DEBUG, "Looking on %p for valid checksum\n", rsdp);
if (acpi_checksum((void *)rsdp, 20) != 0)
return NULL;
printk(BIOS_DEBUG, "Checksum 1 passed\n");
if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
rsdp->length) != 0))
return NULL;
printk(BIOS_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(BIOS_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(BIOS_DEBUG, "RSDP found at %p\n", rsdp);
rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
end = (char *)rsdt + rsdt->header.length;
printk(BIOS_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(BIOS_DEBUG, "FADT found at %p\n", fadt);
facs = (acpi_facs_t *)fadt->firmware_ctrl;
if (facs == NULL) {
printk(BIOS_DEBUG, "No FACS found, wake up from S3 not "
"possible.\n");
return NULL;
}
printk(BIOS_DEBUG, "FACS found at %p\n", facs);
wake_vec = (void *)facs->firmware_waking_vector;
printk(BIOS_DEBUG, "OS waking vector is %p\n", wake_vec);
return wake_vec;
}
#if CONFIG_SMP
extern char *lowmem_backup;
extern char *lowmem_backup_ptr;
extern int lowmem_backup_size;
#endif
#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;
}
#if CONFIG_SMP
// 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);
#endif
/* Copy wakeup trampoline in place. */
memcpy((void *)WAKEUP_BASE, &__wakeup, (size_t)&__wakeup_size);
#if CONFIG_COLLECT_TIMESTAMPS
timestamp_add_now(TS_ACPI_WAKE_JUMP);
#endif
acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE,
HIGH_MEMORY_SAVE);
}
#endif
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