| /* |
| * 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 |
| * Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, |
| * Raptor Engineering |
| * Copyright (C) 2016-2017 Siemens AG |
| * |
| * 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 |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; version 2 of the License. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| /* |
| * 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/acpi_ivrs.h> |
| #include <arch/acpigen.h> |
| #include <device/pci.h> |
| #include <cbmem.h> |
| #include <compiler.h> |
| #include <cpu/x86/lapic_def.h> |
| #include <cpu/cpu.h> |
| #include <cbfs.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 *)(uintptr_t)rsdp->rsdt_address; |
| |
| /* ...while the XSDT is not. */ |
| if (rsdp->xsdt_address) |
| xsdt = (acpi_xsdt_t *)((uintptr_t)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] = (uintptr_t)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)(uintptr_t)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) |
| { |
| memset(mmconfig, 0, sizeof(*mmconfig)); |
| 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) |
| { |
| struct device *cpu; |
| int index = 0; |
| |
| for (cpu = all_devices; cpu; cpu = cpu->next) { |
| if ((cpu->path.type != DEVICE_PATH_APIC) || |
| (cpu->bus->dev->path.type != DEVICE_PATH_CPU_CLUSTER)) { |
| continue; |
| } |
| if (!cpu->enabled) |
| continue; |
| current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, |
| index, cpu->path.apic.apic_id); |
| 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 = get_acpi_table_revision(MADT); |
| |
| 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 = get_acpi_table_revision(MCFG); |
| |
| current = acpi_fill_mcfg(current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)mcfg; |
| header->checksum = acpi_checksum((void *)mcfg, header->length); |
| } |
| |
| static void *get_tcpa_log(u32 *size) |
| { |
| const struct cbmem_entry *ce; |
| const u32 tcpa_default_log_len = 0x10000; |
| void *lasa; |
| ce = cbmem_entry_find(CBMEM_ID_TCPA_TCG_LOG); |
| if (ce) { |
| lasa = cbmem_entry_start(ce); |
| *size = cbmem_entry_size(ce); |
| printk(BIOS_DEBUG, "TCPA log found at %p\n", lasa); |
| return lasa; |
| } |
| lasa = cbmem_add(CBMEM_ID_TCPA_TCG_LOG, tcpa_default_log_len); |
| if (!lasa) { |
| printk(BIOS_ERR, "TCPA log creation failed\n"); |
| return NULL; |
| } |
| |
| printk(BIOS_DEBUG, "TCPA log created at %p\n", lasa); |
| memset(lasa, 0, tcpa_default_log_len); |
| |
| *size = tcpa_default_log_len; |
| return lasa; |
| } |
| |
| static void acpi_create_tcpa(acpi_tcpa_t *tcpa) |
| { |
| acpi_header_t *header = &(tcpa->header); |
| u32 tcpa_log_len; |
| void *lasa; |
| |
| memset((void *)tcpa, 0, sizeof(acpi_tcpa_t)); |
| |
| lasa = get_tcpa_log(&tcpa_log_len); |
| if (!lasa) |
| return; |
| |
| /* Fill out header fields. */ |
| memcpy(header->signature, "TCPA", 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_tcpa_t); |
| header->revision = get_acpi_table_revision(TCPA); |
| |
| tcpa->platform_class = 0; |
| tcpa->laml = tcpa_log_len; |
| tcpa->lasa = (uintptr_t) lasa; |
| |
| /* Calculate checksum. */ |
| header->checksum = acpi_checksum((void *)tcpa, header->length); |
| } |
| |
| static void acpi_ssdt_write_cbtable(void) |
| { |
| const struct cbmem_entry *cbtable; |
| uintptr_t base; |
| uint32_t size; |
| |
| cbtable = cbmem_entry_find(CBMEM_ID_CBTABLE); |
| if (!cbtable) |
| return; |
| base = (uintptr_t)cbmem_entry_start(cbtable); |
| size = cbmem_entry_size(cbtable); |
| |
| acpigen_write_device("CTBL"); |
| acpigen_write_coreboot_hid(COREBOOT_ACPI_ID_CBTABLE); |
| acpigen_write_name_integer("_UID", 0); |
| acpigen_write_STA(ACPI_STATUS_DEVICE_ALL_ON); |
| acpigen_write_name("_CRS"); |
| acpigen_write_resourcetemplate_header(); |
| acpigen_write_mem32fixed(0, base, size); |
| acpigen_write_resourcetemplate_footer(); |
| acpigen_pop_len(); |
| } |
| |
| 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 = get_acpi_table_revision(SSDT); |
| 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); |
| |
| /* Write object to declare coreboot tables */ |
| acpi_ssdt_write_cbtable(); |
| |
| { |
| struct device *dev; |
| for (dev = all_devices; dev; dev = dev->next) |
| if (dev->ops && dev->ops->acpi_fill_ssdt_generator) |
| dev->ops->acpi_fill_ssdt_generator(dev); |
| current = (unsigned long) acpigen_get_current(); |
| } |
| |
| /* (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, |
| unsigned long (*acpi_fill_srat)(unsigned long current)) |
| { |
| 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 = get_acpi_table_revision(SRAT); |
| |
| 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); |
| } |
| |
| void acpi_create_dmar(acpi_dmar_t *dmar, enum dmar_flags flags, |
| unsigned long (*acpi_fill_dmar)(unsigned long)) |
| { |
| acpi_header_t *header = &(dmar->header); |
| unsigned long current = (unsigned long)dmar + sizeof(acpi_dmar_t); |
| |
| memset((void *)dmar, 0, sizeof(acpi_dmar_t)); |
| |
| /* Fill out header fields. */ |
| memcpy(header->signature, "DMAR", 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_dmar_t); |
| header->revision = get_acpi_table_revision(DMAR); |
| |
| dmar->host_address_width = cpu_phys_address_size() - 1; |
| dmar->flags = flags; |
| |
| current = acpi_fill_dmar(current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)dmar; |
| header->checksum = acpi_checksum((void *)dmar, header->length); |
| } |
| |
| unsigned long acpi_create_dmar_drhd(unsigned long current, u8 flags, |
| u16 segment, u64 bar) |
| { |
| dmar_entry_t *drhd = (dmar_entry_t *)current; |
| memset(drhd, 0, sizeof(*drhd)); |
| drhd->type = DMAR_DRHD; |
| drhd->length = sizeof(*drhd); /* will be fixed up later */ |
| drhd->flags = flags; |
| drhd->segment = segment; |
| drhd->bar = bar; |
| |
| return drhd->length; |
| } |
| |
| unsigned long acpi_create_dmar_rmrr(unsigned long current, u16 segment, |
| u64 bar, u64 limit) |
| { |
| dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)current; |
| memset(rmrr, 0, sizeof(*rmrr)); |
| rmrr->type = DMAR_RMRR; |
| rmrr->length = sizeof(*rmrr); /* will be fixed up later */ |
| rmrr->segment = segment; |
| rmrr->bar = bar; |
| rmrr->limit = limit; |
| |
| return rmrr->length; |
| } |
| |
| unsigned long acpi_create_dmar_atsr(unsigned long current, u8 flags, |
| u16 segment) |
| { |
| dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)current; |
| memset(atsr, 0, sizeof(*atsr)); |
| atsr->type = DMAR_ATSR; |
| atsr->length = sizeof(*atsr); /* will be fixed up later */ |
| atsr->flags = flags; |
| atsr->segment = segment; |
| |
| return atsr->length; |
| } |
| |
| void acpi_dmar_drhd_fixup(unsigned long base, unsigned long current) |
| { |
| dmar_entry_t *drhd = (dmar_entry_t *)base; |
| drhd->length = current - base; |
| } |
| |
| void acpi_dmar_rmrr_fixup(unsigned long base, unsigned long current) |
| { |
| dmar_rmrr_entry_t *rmrr = (dmar_rmrr_entry_t *)base; |
| rmrr->length = current - base; |
| } |
| |
| void acpi_dmar_atsr_fixup(unsigned long base, unsigned long current) |
| { |
| dmar_atsr_entry_t *atsr = (dmar_atsr_entry_t *)base; |
| atsr->length = current - base; |
| } |
| |
| static unsigned long acpi_create_dmar_ds(unsigned long current, |
| enum dev_scope_type type, u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| { |
| /* we don't support longer paths yet */ |
| const size_t dev_scope_length = sizeof(dev_scope_t) + 2; |
| |
| dev_scope_t *ds = (dev_scope_t *)current; |
| memset(ds, 0, dev_scope_length); |
| ds->type = type; |
| ds->length = dev_scope_length; |
| ds->enumeration = enumeration_id; |
| ds->start_bus = bus; |
| ds->path[0].dev = dev; |
| ds->path[0].fn = fn; |
| |
| return ds->length; |
| } |
| |
| unsigned long acpi_create_dmar_ds_pci_br(unsigned long current, u8 bus, |
| u8 dev, u8 fn) |
| { |
| return acpi_create_dmar_ds(current, |
| SCOPE_PCI_SUB, 0, bus, dev, fn); |
| } |
| |
| unsigned long acpi_create_dmar_ds_pci(unsigned long current, u8 bus, |
| u8 dev, u8 fn) |
| { |
| return acpi_create_dmar_ds(current, |
| SCOPE_PCI_ENDPOINT, 0, bus, dev, fn); |
| } |
| |
| unsigned long acpi_create_dmar_ds_ioapic(unsigned long current, |
| u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| { |
| return acpi_create_dmar_ds(current, |
| SCOPE_IOAPIC, enumeration_id, bus, dev, fn); |
| } |
| |
| unsigned long acpi_create_dmar_ds_msi_hpet(unsigned long current, |
| u8 enumeration_id, u8 bus, u8 dev, u8 fn) |
| { |
| return acpi_create_dmar_ds(current, |
| SCOPE_MSI_HPET, enumeration_id, bus, dev, fn); |
| } |
| |
| /* http://h21007.www2.hp.com/portal/download/files/unprot/Itanium/slit.pdf */ |
| void acpi_create_slit(acpi_slit_t *slit, |
| unsigned long (*acpi_fill_slit)(unsigned long current)) |
| { |
| 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 = get_acpi_table_revision(SLIT); |
| |
| 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) |
| { |
| 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 = get_acpi_table_revision(HPET); |
| |
| /* Fill out HPET address. */ |
| addr->space_id = 0; /* Memory */ |
| addr->bit_width = 64; |
| addr->bit_offset = 0; |
| addr->addrl = CONFIG_HPET_ADDRESS & 0xffffffff; |
| addr->addrh = ((unsigned long long)CONFIG_HPET_ADDRESS) >> 32; |
| |
| hpet->id = *(unsigned int *)CONFIG_HPET_ADDRESS; |
| hpet->number = 0; |
| hpet->min_tick = CONFIG_HPET_MIN_TICKS; |
| |
| header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t)); |
| } |
| |
| void acpi_create_vfct(struct device *device, |
| struct acpi_vfct *vfct, |
| unsigned long (*acpi_fill_vfct)(struct device *device, |
| struct acpi_vfct *vfct_struct, unsigned long current)) |
| { |
| acpi_header_t *header = &(vfct->header); |
| unsigned long current = (unsigned long)vfct + sizeof(struct acpi_vfct); |
| |
| memset((void *)vfct, 0, sizeof(struct acpi_vfct)); |
| |
| /* Fill out header fields. */ |
| memcpy(header->signature, "VFCT", 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(struct acpi_vfct); |
| header->revision = get_acpi_table_revision(VFCT); |
| |
| current = acpi_fill_vfct(device, vfct, current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)vfct; |
| header->checksum = acpi_checksum((void *)vfct, header->length); |
| } |
| |
| void acpi_create_ivrs(acpi_ivrs_t *ivrs, |
| unsigned long (*acpi_fill_ivrs)(acpi_ivrs_t *ivrs_struct, |
| unsigned long current)) |
| { |
| acpi_header_t *header = &(ivrs->header); |
| unsigned long current = (unsigned long)ivrs + sizeof(acpi_ivrs_t); |
| |
| memset((void *)ivrs, 0, sizeof(acpi_ivrs_t)); |
| |
| /* Fill out header fields. */ |
| memcpy(header->signature, "IVRS", 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_ivrs_t); |
| header->revision = get_acpi_table_revision(IVRS); |
| |
| current = acpi_fill_ivrs(ivrs, current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)ivrs; |
| header->checksum = acpi_checksum((void *)ivrs, header->length); |
| } |
| |
| unsigned long acpi_write_hpet(struct device *device, unsigned long current, |
| acpi_rsdp_t *rsdp) |
| { |
| acpi_hpet_t *hpet; |
| |
| /* |
| * We explicitly add these tables later on: |
| */ |
| printk(BIOS_DEBUG, "ACPI: * HPET\n"); |
| |
| hpet = (acpi_hpet_t *) current; |
| current += sizeof(acpi_hpet_t); |
| current = ALIGN(current, 16); |
| acpi_create_hpet(hpet); |
| acpi_add_table(rsdp, hpet); |
| |
| return current; |
| } |
| |
| void acpi_create_dbg2(acpi_dbg2_header_t *dbg2, |
| int port_type, int port_subtype, |
| acpi_addr_t *address, uint32_t address_size, |
| const char *device_path) |
| { |
| uintptr_t current; |
| acpi_dbg2_device_t *device; |
| uint32_t *dbg2_addr_size; |
| acpi_header_t *header; |
| size_t path_len; |
| const char *path; |
| char *namespace; |
| |
| /* Fill out header fields. */ |
| current = (uintptr_t)dbg2; |
| memset(dbg2, 0, sizeof(acpi_dbg2_header_t)); |
| header = &(dbg2->header); |
| header->revision = get_acpi_table_revision(DBG2); |
| memcpy(header->signature, "DBG2", 4); |
| memcpy(header->oem_id, OEM_ID, 6); |
| memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| /* One debug device defined */ |
| dbg2->devices_offset = sizeof(acpi_dbg2_header_t); |
| dbg2->devices_count = 1; |
| current += sizeof(acpi_dbg2_header_t); |
| |
| /* Device comes after the header */ |
| device = (acpi_dbg2_device_t *)current; |
| memset(device, 0, sizeof(acpi_dbg2_device_t)); |
| current += sizeof(acpi_dbg2_device_t); |
| |
| device->revision = 0; |
| device->address_count = 1; |
| device->port_type = port_type; |
| device->port_subtype = port_subtype; |
| |
| /* Base Address comes after device structure */ |
| memcpy((void *)current, address, sizeof(acpi_addr_t)); |
| device->base_address_offset = current - (uintptr_t)device; |
| current += sizeof(acpi_addr_t); |
| |
| /* Address Size comes after address structure */ |
| dbg2_addr_size = (uint32_t *)current; |
| device->address_size_offset = current - (uintptr_t)device; |
| *dbg2_addr_size = address_size; |
| current += sizeof(uint32_t); |
| |
| /* Namespace string comes last, use '.' if not provided */ |
| path = device_path ? : "."; |
| /* Namespace string length includes NULL terminator */ |
| path_len = strlen(path) + 1; |
| namespace = (char *)current; |
| device->namespace_string_length = path_len; |
| device->namespace_string_offset = current - (uintptr_t)device; |
| strncpy(namespace, path, path_len); |
| current += path_len; |
| |
| /* Update structure lengths and checksum */ |
| device->length = current - (uintptr_t)device; |
| header->length = current - (uintptr_t)dbg2; |
| header->checksum = acpi_checksum((uint8_t *)dbg2, header->length); |
| } |
| |
| unsigned long acpi_write_dbg2_pci_uart(acpi_rsdp_t *rsdp, unsigned long current, |
| struct device *dev, uint8_t access_size) |
| { |
| acpi_dbg2_header_t *dbg2 = (acpi_dbg2_header_t *)current; |
| struct resource *res; |
| acpi_addr_t address; |
| |
| if (!dev) { |
| printk(BIOS_ERR, "%s: Device not found\n", __func__); |
| return current; |
| } |
| if (!dev->enabled) { |
| printk(BIOS_INFO, "%s: Device not enabled\n", __func__); |
| return current; |
| } |
| res = find_resource(dev, PCI_BASE_ADDRESS_0); |
| if (!res) { |
| printk(BIOS_ERR, "%s: Unable to find resource for %s\n", |
| __func__, dev_path(dev)); |
| return current; |
| } |
| |
| memset(&address, 0, sizeof(address)); |
| if (res->flags & IORESOURCE_IO) |
| address.space_id = ACPI_ADDRESS_SPACE_IO; |
| else if (res->flags & IORESOURCE_MEM) |
| address.space_id = ACPI_ADDRESS_SPACE_MEMORY; |
| else { |
| printk(BIOS_ERR, "%s: Unknown address space type\n", __func__); |
| return current; |
| } |
| |
| address.addrl = (uint32_t)res->base; |
| address.addrh = (uint32_t)((res->base >> 32) & 0xffffffff); |
| address.access_size = access_size; |
| |
| acpi_create_dbg2(dbg2, |
| ACPI_DBG2_PORT_SERIAL, |
| ACPI_DBG2_PORT_SERIAL_16550, |
| &address, res->size, |
| acpi_device_path(dev)); |
| |
| if (dbg2->header.length) { |
| current += dbg2->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, dbg2); |
| } |
| |
| return current; |
| } |
| |
| 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 = get_acpi_table_revision(FACS); |
| } |
| |
| static void acpi_write_rsdt(acpi_rsdt_t *rsdt, char *oem_id, char *oem_table_id) |
| { |
| 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, oem_table_id, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| header->length = sizeof(acpi_rsdt_t); |
| header->revision = get_acpi_table_revision(RSDT); |
| |
| /* Entries are filled in later, we come with an empty set. */ |
| |
| /* Fix checksum. */ |
| header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t)); |
| } |
| |
| static void acpi_write_xsdt(acpi_xsdt_t *xsdt, char *oem_id, char *oem_table_id) |
| { |
| 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, oem_table_id, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| |
| header->length = sizeof(acpi_xsdt_t); |
| header->revision = get_acpi_table_revision(XSDT); |
| |
| /* Entries are filled in later, we come with an empty set. */ |
| |
| /* Fix checksum. */ |
| header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t)); |
| } |
| |
| static void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, |
| acpi_xsdt_t *xsdt, char *oem_id) |
| { |
| 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 = (uintptr_t)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)(uintptr_t)xsdt; |
| rsdp->revision = get_acpi_table_revision(RSDP); |
| } |
| |
| /* Calculate checksums. */ |
| rsdp->checksum = acpi_checksum((void *)rsdp, 20); |
| rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t)); |
| } |
| |
| 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, |
| unsigned long (*acpi_fill_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 = get_acpi_table_revision(HEST); |
| |
| acpi_fill_hest(hest); |
| |
| /* Calculate checksums. */ |
| header->checksum = acpi_checksum((void *)hest, header->length); |
| } |
| |
| #if IS_ENABLED(CONFIG_COMMON_FADT) |
| void acpi_create_fadt(acpi_fadt_t *fadt, acpi_facs_t *facs, void *dsdt) |
| { |
| acpi_header_t *header = &(fadt->header); |
| |
| memset((void *) fadt, 0, sizeof(acpi_fadt_t)); |
| memcpy(header->signature, "FACP", 4); |
| header->length = sizeof(acpi_fadt_t); |
| header->revision = get_acpi_table_revision(FADT); |
| memcpy(header->oem_id, OEM_ID, 6); |
| memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8); |
| memcpy(header->asl_compiler_id, ASLC, 4); |
| header->asl_compiler_revision = 0; |
| |
| fadt->firmware_ctrl = (unsigned long) facs; |
| fadt->dsdt = (unsigned long) dsdt; |
| |
| fadt->x_firmware_ctl_l = (unsigned long)facs; |
| fadt->x_firmware_ctl_h = 0; |
| fadt->x_dsdt_l = (unsigned long)dsdt; |
| fadt->x_dsdt_h = 0; |
| |
| if (IS_ENABLED(CONFIG_SYSTEM_TYPE_LAPTOP)) |
| fadt->preferred_pm_profile = PM_MOBILE; |
| else |
| fadt->preferred_pm_profile = PM_DESKTOP; |
| |
| acpi_fill_fadt(fadt); |
| |
| header->checksum = |
| acpi_checksum((void *) fadt, header->length); |
| } |
| #endif |
| |
| unsigned long __weak fw_cfg_acpi_tables(unsigned long start) |
| { |
| return 0; |
| } |
| |
| unsigned long write_acpi_tables(unsigned long start) |
| { |
| unsigned long current; |
| acpi_rsdp_t *rsdp; |
| acpi_rsdt_t *rsdt; |
| acpi_xsdt_t *xsdt; |
| acpi_fadt_t *fadt; |
| acpi_facs_t *facs; |
| acpi_header_t *slic_file, *slic; |
| acpi_header_t *ssdt; |
| acpi_header_t *dsdt_file, *dsdt; |
| acpi_mcfg_t *mcfg; |
| acpi_tcpa_t *tcpa; |
| acpi_madt_t *madt; |
| struct device *dev; |
| unsigned long fw; |
| size_t slic_size, dsdt_size; |
| char oem_id[6], oem_table_id[8]; |
| |
| current = start; |
| |
| /* Align ACPI tables to 16byte */ |
| current = acpi_align_current(current); |
| |
| fw = fw_cfg_acpi_tables(current); |
| if (fw) |
| return fw; |
| |
| dsdt_file = cbfs_boot_map_with_leak( |
| CONFIG_CBFS_PREFIX "/dsdt.aml", |
| CBFS_TYPE_RAW, &dsdt_size); |
| if (!dsdt_file) { |
| printk(BIOS_ERR, "No DSDT file, skipping ACPI tables\n"); |
| return current; |
| } |
| |
| if (dsdt_file->length > dsdt_size |
| || dsdt_file->length < sizeof(acpi_header_t) |
| || memcmp(dsdt_file->signature, "DSDT", 4) != 0) { |
| printk(BIOS_ERR, "Invalid DSDT file, skipping ACPI tables\n"); |
| return current; |
| } |
| |
| slic_file = cbfs_boot_map_with_leak(CONFIG_CBFS_PREFIX "/slic", |
| CBFS_TYPE_RAW, &slic_size); |
| if (slic_file |
| && (slic_file->length > slic_size |
| || slic_file->length < sizeof(acpi_header_t) |
| || memcmp(slic_file->signature, "SLIC", 4) != 0)) { |
| slic_file = 0; |
| } |
| |
| if (slic_file) { |
| memcpy(oem_id, slic_file->oem_id, 6); |
| memcpy(oem_table_id, slic_file->oem_table_id, 8); |
| } else { |
| memcpy(oem_id, OEM_ID, 6); |
| memcpy(oem_table_id, ACPI_TABLE_CREATOR, 8); |
| } |
| |
| printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start); |
| |
| /* We need at least an RSDP and an RSDT Table */ |
| rsdp = (acpi_rsdp_t *) current; |
| current += sizeof(acpi_rsdp_t); |
| current = acpi_align_current(current); |
| rsdt = (acpi_rsdt_t *) current; |
| current += sizeof(acpi_rsdt_t); |
| current = acpi_align_current(current); |
| xsdt = (acpi_xsdt_t *) current; |
| current += sizeof(acpi_xsdt_t); |
| current = acpi_align_current(current); |
| |
| /* clear all table memory */ |
| memset((void *) start, 0, current - start); |
| |
| acpi_write_rsdp(rsdp, rsdt, xsdt, oem_id); |
| acpi_write_rsdt(rsdt, oem_id, oem_table_id); |
| acpi_write_xsdt(xsdt, oem_id, oem_table_id); |
| |
| printk(BIOS_DEBUG, "ACPI: * FACS\n"); |
| current = (ALIGN(current, 64)); |
| facs = (acpi_facs_t *) current; |
| current += sizeof(acpi_facs_t); |
| current = acpi_align_current(current); |
| acpi_create_facs(facs); |
| |
| printk(BIOS_DEBUG, "ACPI: * DSDT\n"); |
| dsdt = (acpi_header_t *) current; |
| memcpy(dsdt, dsdt_file, sizeof(acpi_header_t)); |
| if (dsdt->length >= sizeof(acpi_header_t)) { |
| current += sizeof(acpi_header_t); |
| |
| acpigen_set_current((char *) current); |
| for (dev = all_devices; dev; dev = dev->next) |
| if (dev->ops && dev->ops->acpi_inject_dsdt_generator) |
| dev->ops->acpi_inject_dsdt_generator(dev); |
| current = (unsigned long) acpigen_get_current(); |
| memcpy((char *)current, |
| (char *)dsdt_file + sizeof(acpi_header_t), |
| dsdt->length - sizeof(acpi_header_t)); |
| current += dsdt->length - sizeof(acpi_header_t); |
| |
| /* (Re)calculate length and checksum. */ |
| dsdt->length = current - (unsigned long)dsdt; |
| dsdt->checksum = 0; |
| dsdt->checksum = acpi_checksum((void *)dsdt, dsdt->length); |
| } |
| |
| current = acpi_align_current(current); |
| |
| printk(BIOS_DEBUG, "ACPI: * FADT\n"); |
| fadt = (acpi_fadt_t *) current; |
| current += sizeof(acpi_fadt_t); |
| current = acpi_align_current(current); |
| |
| acpi_create_fadt(fadt, facs, dsdt); |
| acpi_add_table(rsdp, fadt); |
| |
| if (slic_file) { |
| printk(BIOS_DEBUG, "ACPI: * SLIC\n"); |
| slic = (acpi_header_t *)current; |
| memcpy(slic, slic_file, slic_file->length); |
| current += slic_file->length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, slic); |
| } |
| |
| printk(BIOS_DEBUG, "ACPI: * SSDT\n"); |
| ssdt = (acpi_header_t *)current; |
| acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR); |
| if (ssdt->length > sizeof(acpi_header_t)) { |
| current += ssdt->length; |
| acpi_add_table(rsdp, ssdt); |
| current = acpi_align_current(current); |
| } |
| |
| printk(BIOS_DEBUG, "ACPI: * MCFG\n"); |
| mcfg = (acpi_mcfg_t *) current; |
| acpi_create_mcfg(mcfg); |
| if (mcfg->header.length > sizeof(acpi_mcfg_t)) { |
| current += mcfg->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, mcfg); |
| } |
| |
| printk(BIOS_DEBUG, "ACPI: * TCPA\n"); |
| tcpa = (acpi_tcpa_t *) current; |
| acpi_create_tcpa(tcpa); |
| if (tcpa->header.length >= sizeof(acpi_tcpa_t)) { |
| current += tcpa->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, tcpa); |
| } |
| |
| printk(BIOS_DEBUG, "ACPI: * MADT\n"); |
| |
| madt = (acpi_madt_t *) current; |
| acpi_create_madt(madt); |
| if (madt->header.length > sizeof(acpi_madt_t)) { |
| current += madt->header.length; |
| acpi_add_table(rsdp, madt); |
| } |
| current = acpi_align_current(current); |
| |
| printk(BIOS_DEBUG, "current = %lx\n", current); |
| |
| for (dev = all_devices; dev; dev = dev->next) { |
| if (dev->ops && dev->ops->write_acpi_tables) { |
| current = dev->ops->write_acpi_tables(dev, current, |
| rsdp); |
| current = acpi_align_current(current); |
| } |
| } |
| |
| printk(BIOS_INFO, "ACPI: done.\n"); |
| return current; |
| } |
| |
| 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; |
| } |
| |
| void *acpi_find_wakeup_vector(void) |
| { |
| char *p, *end; |
| acpi_rsdt_t *rsdt; |
| acpi_facs_t *facs; |
| acpi_fadt_t *fadt = NULL; |
| acpi_rsdp_t *rsdp = NULL; |
| void *wake_vec; |
| int i; |
| |
| 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) { |
| rsdp = valid_rsdp((acpi_rsdp_t *)p); |
| if (rsdp) |
| break; |
| } |
| |
| if (rsdp == NULL) |
| return NULL; |
| |
| printk(BIOS_DEBUG, "RSDP found at %p\n", rsdp); |
| rsdt = (acpi_rsdt_t *)(uintptr_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 *)(uintptr_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 *)(uintptr_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 *)(uintptr_t)facs->firmware_waking_vector; |
| printk(BIOS_DEBUG, "OS waking vector is %p\n", wake_vec); |
| |
| return wake_vec; |
| } |
| |
| __weak int acpi_get_gpe(int gpe) |
| { |
| return -1; /* implemented by SOC */ |
| } |
| |
| int get_acpi_table_revision(enum acpi_tables table) |
| { |
| switch (table) { |
| case FADT: |
| return ACPI_FADT_REV_ACPI_3_0; |
| case MADT: /* ACPI 1.0/2.0: 1, ACPI 3.0: 2, ACPI 4.0: 3 */ |
| return 2; |
| case MCFG: |
| return 1; |
| case TCPA: |
| return 2; |
| case SSDT: /* ACPI 1.0/2.0: ?, ACPI 3.0/4.0: 2 */ |
| return 2; |
| case SRAT: /* ACPI 1.0: N/A, 2.0: 1, 3.0: 2, 4.0: 3 */ |
| return 1; /* TODO Should probably be upgraded to 2 */ |
| case DMAR: |
| return 1; |
| case SLIT: /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */ |
| return 1; |
| case HPET: /* Currently 1. Table added in ACPI 2.0. */ |
| return 1; |
| case VFCT: /* ACPI 1.0: N/A, ACPI 2.0/3.0/4.0: 1 */ |
| return 1; |
| case IVRS: |
| return IVRS_FORMAT_FIXED; |
| case DBG2: |
| return 0; |
| case FACS: /* ACPI 1.0: 0, ACPI 2.0/3.0: 1, ACPI 4.0: 2 */ |
| return 1; |
| case RSDT: /* ACPI 1.0/2.0/3.0/4.0: 1 */ |
| return 1; |
| case XSDT: /* ACPI 1.0: N/A, 2.0/3.0/4.0: 1 */ |
| return 1; |
| case RSDP: /* ACPI 1.0: 0, ACPI 2.0/3.0/4.0: 2. */ |
| return 2; |
| case HEST: |
| return 1; |
| case NHLT: |
| return 5; |
| default: |
| return -1; |
| } |
| return -1; |
| } |