+++ /dev/null
-/*
- * 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>
-
-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)
-{
-#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; /* 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));
-}
-
-#if CONFIG_HAVE_ACPI_RESUME == 1
-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)
- 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)
-{
- 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(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;
-}
-
-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((void *)WAKEUP_BASE, &__wakeup, (size_t)&__wakeup_size);
-
- acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE,
- HIGH_MEMORY_SAVE);
-}
-#endif
projects / coreboot.git / blobdiff