/* * This file is part of the coreboot project. * * coreboot ACPI Table support * written by Stefan Reinauer * * Copyright (C) 2004 SUSE LINUX AG * Copyright (C) 2005-2009 coresystems GmbH * Copyright (C) 2015 Timothy Pearson , * Raptor Engineering * Copyright (C) 2016-2017 Siemens AG * * ACPI FADT, FACS, and DSDT table support added by * Nick Barker , 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 #include #include #include #include #include #include #include #include #include #include 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 1; 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; }