| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * coreboot ACPI Table support |
| */ |
| |
| /* |
| * 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 <acpi/acpi.h> |
| #include <acpi/acpi_iort.h> |
| #include <acpi/acpi_ivrs.h> |
| #include <acpi/acpigen.h> |
| #include <cbfs.h> |
| #include <cbmem.h> |
| #include <commonlib/helpers.h> |
| #include <console/console.h> |
| #include <cpu/cpu.h> |
| #include <device/device.h> |
| #include <device/mmio.h> |
| #include <device/pci.h> |
| #include <drivers/crb/tpm.h> |
| #include <drivers/uart/pl011.h> |
| #include <security/tpm/tss.h> |
| #include <string.h> |
| #include <types.h> |
| #include <version.h> |
| |
| static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp); |
| |
| 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; |
| |
| /* The 32bit RSDT may not be valid if tables live above 4GiB */ |
| rsdt = (acpi_rsdt_t *)(uintptr_t)rsdp->rsdt_address; |
| xsdt = (acpi_xsdt_t *)(uintptr_t)rsdp->xsdt_address; |
| |
| /* This should always be MAX_ACPI_TABLES. */ |
| entries_num = ARRAY_SIZE(xsdt->entry); |
| |
| for (i = 0; i < entries_num; i++) { |
| if (xsdt->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 XSDT. */ |
| xsdt->entry[i] = (u64)(uintptr_t)table; |
| |
| /* Fix XSDT length or the kernel will assume invalid entries. */ |
| xsdt->header.length = sizeof(acpi_header_t) + (sizeof(u64) * (i + 1)); |
| |
| /* Re-calculate checksum. */ |
| xsdt->header.checksum = 0; /* Hope this won't get optimized away */ |
| xsdt->header.checksum = acpi_checksum((u8 *)xsdt, xsdt->header.length); |
| |
| /* |
| * And now the same thing for the RSDT. We use the same index as for |
| * now we want the XSDT and RSDT to always be in sync in coreboot. |
| */ |
| if (rsdt && (uintptr_t)table < UINT32_MAX) { |
| /* Add table to the RSDT. */ |
| rsdt->entry[i] = (u32)(uintptr_t)table; |
| |
| /* Fix RSDT length. */ |
| rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i + 1)); |
| |
| /* Re-calculate checksum. */ |
| rsdt->header.checksum = 0; |
| rsdt->header.checksum = acpi_checksum((u8 *)rsdt, rsdt->header.length); |
| } |
| |
| printk(BIOS_DEBUG, "ACPI: added table %d/%d, length now %d\n", |
| i + 1, entries_num, xsdt->header.length); |
| } |
| |
| static enum cb_err acpi_fill_header(acpi_header_t *header, const char name[4], |
| enum acpi_tables table, uint32_t size) |
| { |
| if (!header) |
| return CB_ERR; |
| |
| /* Fill out header fields. */ |
| memcpy(header->signature, name, 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->asl_compiler_revision = asl_revision; |
| header->revision = get_acpi_table_revision(table); |
| header->length = size; |
| |
| return CB_SUCCESS; |
| } |
| |
| static int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u64 base, |
| u16 seg_nr, u8 start, u8 end) |
| { |
| memset(mmconfig, 0, sizeof(*mmconfig)); |
| mmconfig->base_address = base; |
| mmconfig->pci_segment_group_number = seg_nr; |
| mmconfig->start_bus_number = start; |
| mmconfig->end_bus_number = end; |
| |
| return sizeof(acpi_mcfg_mmconfig_t); |
| } |
| |
| static void acpi_create_madt(acpi_header_t *header, void *unused) |
| { |
| acpi_madt_t *madt = (acpi_madt_t *)header; |
| unsigned long current = (unsigned long)madt + sizeof(acpi_madt_t); |
| |
| if (acpi_fill_header(header, "APIC", MADT, sizeof(acpi_madt_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_arch_fill_madt(madt, current); |
| |
| if (CONFIG(ACPI_CUSTOM_MADT)) |
| current = acpi_fill_madt(current); |
| |
| /* (Re)calculate length . */ |
| header->length = current - (unsigned long)madt; |
| } |
| |
| static unsigned long acpi_fill_mcfg(unsigned long current) |
| { |
| for (int i = 0; i < PCI_SEGMENT_GROUP_COUNT; i++) { |
| current += acpi_create_mcfg_mmconfig((acpi_mcfg_mmconfig_t *)current, |
| CONFIG_ECAM_MMCONF_BASE_ADDRESS + i * PCI_PER_SEGMENT_GROUP_ECAM_SIZE, |
| i, |
| 0, |
| PCI_BUSES_PER_SEGMENT_GROUP - 1); |
| } |
| |
| return current; |
| } |
| |
| /* MCFG is defined in the PCI Firmware Specification 3.0. */ |
| static void acpi_create_mcfg(acpi_header_t *header, void *unused) |
| { |
| acpi_mcfg_t *mcfg = (acpi_mcfg_t *)header; |
| unsigned long current = (unsigned long)mcfg + sizeof(acpi_mcfg_t); |
| |
| |
| if (acpi_fill_header(header, "MCFG", MCFG, sizeof(acpi_mcfg_t)) != CB_SUCCESS) |
| return; |
| |
| if (CONFIG(ECAM_MMCONF_SUPPORT)) |
| current = acpi_fill_mcfg(current); |
| |
| /* (Re)calculate length */ |
| header->length = current - (unsigned long)mcfg; |
| } |
| |
| 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_header_t *header, void *unused) |
| { |
| if (tlcl_get_family() != TPM_1) |
| return; |
| |
| acpi_tcpa_t *tcpa = (acpi_tcpa_t *)header; |
| u32 tcpa_log_len; |
| void *lasa; |
| |
| lasa = get_tcpa_log(&tcpa_log_len); |
| if (!lasa) |
| return; |
| |
| if (acpi_fill_header(header, "TCPA", TCPA, sizeof(acpi_tcpa_t)) != CB_SUCCESS) |
| return; |
| |
| tcpa->platform_class = 0; |
| tcpa->laml = tcpa_log_len; |
| tcpa->lasa = (uintptr_t)lasa; |
| } |
| |
| static void *get_tpm2_log(u32 *size) |
| { |
| const struct cbmem_entry *ce; |
| const u32 tpm2_default_log_len = 0x10000; |
| void *lasa; |
| ce = cbmem_entry_find(CBMEM_ID_TPM2_TCG_LOG); |
| if (ce) { |
| lasa = cbmem_entry_start(ce); |
| *size = cbmem_entry_size(ce); |
| printk(BIOS_DEBUG, "TPM2 log found at %p\n", lasa); |
| return lasa; |
| } |
| lasa = cbmem_add(CBMEM_ID_TPM2_TCG_LOG, tpm2_default_log_len); |
| if (!lasa) { |
| printk(BIOS_ERR, "TPM2 log creation failed\n"); |
| return NULL; |
| } |
| |
| printk(BIOS_DEBUG, "TPM2 log created at %p\n", lasa); |
| memset(lasa, 0, tpm2_default_log_len); |
| |
| *size = tpm2_default_log_len; |
| return lasa; |
| } |
| |
| static void acpi_create_tpm2(acpi_header_t *header, void *unused) |
| { |
| if (tlcl_get_family() != TPM_2) |
| return; |
| |
| acpi_tpm2_t *tpm2 = (acpi_tpm2_t *)header; |
| u32 tpm2_log_len; |
| void *lasa; |
| |
| /* |
| * Some payloads like SeaBIOS depend on log area to use TPM2. |
| * Get the memory size and address of TPM2 log area or initialize it. |
| */ |
| lasa = get_tpm2_log(&tpm2_log_len); |
| if (!lasa) |
| tpm2_log_len = 0; |
| |
| if (acpi_fill_header(header, "TPM2", TPM2, sizeof(acpi_tpm2_t)) != CB_SUCCESS) |
| return; |
| |
| /* Hard to detect for coreboot. Just set it to 0 */ |
| tpm2->platform_class = 0; |
| if (CONFIG(CRB_TPM) && crb_tpm_is_active()) { |
| /* Must be set to 7 for CRB Support */ |
| tpm2->control_area = CONFIG_CRB_TPM_BASE_ADDRESS + 0x40; |
| tpm2->start_method = 7; |
| } else { |
| /* Must be set to 0 for FIFO interface support */ |
| tpm2->control_area = 0; |
| tpm2->start_method = 6; |
| } |
| memset(tpm2->msp, 0, sizeof(tpm2->msp)); |
| |
| /* Fill the log area size and start address fields. */ |
| tpm2->laml = tpm2_log_len; |
| tpm2->lasa = (uintptr_t)lasa; |
| } |
| |
| 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_resource_consumer_mmio(base, base + size - 1, |
| MEM_RSRC_FLAG_MEM_READ_ONLY |
| | MEM_RSRC_FLAG_MEM_ATTR_CACHE); |
| acpigen_write_resourcetemplate_footer(); |
| acpigen_pop_len(); |
| } |
| |
| static void acpi_create_ssdt_generator(acpi_header_t *ssdt, void *unused) |
| { |
| unsigned long current = (unsigned long)ssdt + sizeof(acpi_header_t); |
| |
| if (acpi_fill_header(ssdt, "SSDT", SSDT, sizeof(acpi_header_t)) != CB_SUCCESS) |
| return; |
| |
| 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->enabled && dev->ops && dev->ops->acpi_fill_ssdt) |
| dev->ops->acpi_fill_ssdt(dev); |
| current = (unsigned long)acpigen_get_current(); |
| } |
| |
| /* (Re)calculate length and checksum. */ |
| ssdt->length = current - (unsigned long)ssdt; |
| } |
| |
| 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; |
| } |
| |
| int acpi_create_srat_gia_pci(acpi_srat_gia_t *gia, u32 proximity_domain, |
| struct device *dev, u32 flags) |
| { |
| /* Only handle PCI devices. */ |
| if (dev->path.type != DEVICE_PATH_PCI) |
| return 0; |
| |
| gia->type = ACPI_SRAT_STRUCTURE_GIA; |
| gia->length = sizeof(acpi_srat_gia_t); |
| gia->proximity_domain = proximity_domain; |
| gia->dev_handle_type = ACPI_SRAT_GIA_DEV_HANDLE_PCI; |
| /* First two bytes has segment number */ |
| gia->dev_handle[0] = dev->upstream->segment_group; |
| gia->dev_handle[1] = 0; |
| gia->dev_handle[2] = dev->upstream->secondary; /* Byte 2 has bus number */ |
| /* Byte 3 has bits 7:3 for dev, bits 2:0 for func */ |
| gia->dev_handle[3] = dev->path.pci.devfn; |
| gia->flags = flags; |
| |
| return gia->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)); |
| |
| if (acpi_fill_header(header, "SRAT", SRAT, sizeof(acpi_srat_t)) != CB_SUCCESS) |
| return; |
| |
| 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); |
| } |
| |
| int acpi_create_cedt_chbs(acpi_cedt_chbs_t *chbs, u32 uid, u32 cxl_ver, u64 base) |
| { |
| memset((void *)chbs, 0, sizeof(acpi_cedt_chbs_t)); |
| |
| chbs->type = ACPI_CEDT_STRUCTURE_CHBS; |
| chbs->length = sizeof(acpi_cedt_chbs_t); |
| chbs->uid = uid; |
| chbs->cxl_ver = cxl_ver; |
| chbs->base = base; |
| |
| /* |
| * CXL spec 2.0 section 9.14.1.2 "CXL CHBS" |
| * CXL 1.1 spec compliant host bridge: 8KB |
| * CXL 2.0 spec compliant host bridge: 64KB |
| */ |
| if (cxl_ver == ACPI_CEDT_CHBS_CXL_VER_1_1) |
| chbs->len = 8 * KiB; |
| else if (cxl_ver == ACPI_CEDT_CHBS_CXL_VER_2_0) |
| chbs->len = 64 * KiB; |
| else |
| printk(BIOS_ERR, "ACPI(%s:%s): Incorrect CXL version:%d\n", __FILE__, __func__, |
| cxl_ver); |
| |
| return chbs->length; |
| } |
| |
| int acpi_create_cedt_cfmws(acpi_cedt_cfmws_t *cfmws, u64 base_hpa, u64 window_size, u8 eniw, |
| u32 hbig, u16 restriction, u16 qtg_id, const u32 *interleave_target) |
| { |
| memset((void *)cfmws, 0, sizeof(acpi_cedt_cfmws_t)); |
| |
| cfmws->type = ACPI_CEDT_STRUCTURE_CFMWS; |
| |
| u8 niw = 0; |
| if (eniw >= 8) |
| printk(BIOS_ERR, "ACPI(%s:%s): Incorrect eniw::%d\n", __FILE__, __func__, eniw); |
| else |
| /* NIW = 2 ** ENIW */ |
| niw = 0x1 << eniw; |
| /* 36 + 4 * NIW */ |
| cfmws->length = sizeof(acpi_cedt_cfmws_t) + 4 * niw; |
| |
| cfmws->base_hpa = base_hpa; |
| cfmws->window_size = window_size; |
| cfmws->eniw = eniw; |
| |
| // 0: Standard Modulo Arithmetic. Other values reserved. |
| cfmws->interleave_arithmetic = 0; |
| |
| cfmws->hbig = hbig; |
| cfmws->restriction = restriction; |
| cfmws->qtg_id = qtg_id; |
| memcpy(&cfmws->interleave_target, interleave_target, 4 * niw); |
| |
| return cfmws->length; |
| } |
| |
| void acpi_create_cedt(acpi_cedt_t *cedt, unsigned long (*acpi_fill_cedt)(unsigned long current)) |
| { |
| acpi_header_t *header = &(cedt->header); |
| unsigned long current = (unsigned long)cedt + sizeof(acpi_cedt_t); |
| |
| memset((void *)cedt, 0, sizeof(acpi_cedt_t)); |
| |
| if (acpi_fill_header(header, "CEDT", CEDT, sizeof(acpi_cedt_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_cedt(current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)cedt; |
| header->checksum = acpi_checksum((void *)cedt, header->length); |
| } |
| |
| int acpi_create_hmat_mpda(acpi_hmat_mpda_t *mpda, u32 initiator, u32 memory) |
| { |
| memset((void *)mpda, 0, sizeof(acpi_hmat_mpda_t)); |
| |
| mpda->type = 0; /* Memory Proximity Domain Attributes structure */ |
| mpda->length = sizeof(acpi_hmat_mpda_t); |
| /* |
| * Proximity Domain for Attached Initiator field is valid. |
| * Bit 1 and bit 2 are reserved since HMAT revision 2. |
| */ |
| mpda->flags = (1 << 0); |
| mpda->proximity_domain_initiator = initiator; |
| mpda->proximity_domain_memory = memory; |
| |
| return mpda->length; |
| } |
| |
| void acpi_create_hmat(acpi_hmat_t *hmat, |
| unsigned long (*acpi_fill_hmat)(unsigned long current)) |
| { |
| acpi_header_t *header = &(hmat->header); |
| unsigned long current = (unsigned long)hmat + sizeof(acpi_hmat_t); |
| |
| memset((void *)hmat, 0, sizeof(acpi_hmat_t)); |
| |
| if (acpi_fill_header(header, "HMAT", HMAT, sizeof(acpi_hmat_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_hmat(current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)hmat; |
| header->checksum = acpi_checksum((void *)hmat, header->length); |
| } |
| |
| /* 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)); |
| |
| if (acpi_fill_header(header, "SLIT", SLIT, sizeof(acpi_slit_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_slit(current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)slit; |
| header->checksum = acpi_checksum((void *)slit, header->length); |
| } |
| |
| /* |
| * This method adds the ACPI error injection capability. It fills the default information. |
| * HW dependent code (caller) can modify the defaults upon return. If no changes are necessary |
| * and the defaults are acceptable then caller can simply add the table (acpi_add_table). |
| * INPUTS: |
| * einj - ptr to the starting location of EINJ table |
| * actions - number of actions to trigger an error (HW dependent) |
| * addr - address of trigger action table. This should be ACPI reserved memory and it will be |
| * shared between OS and FW. |
| */ |
| void acpi_create_einj(acpi_einj_t *einj, uintptr_t addr, u8 actions) |
| { |
| int i; |
| acpi_header_t *header = &(einj->header); |
| acpi_injection_header_t *inj_header = &(einj->inj_header); |
| acpi_einj_smi_t *einj_smi = (acpi_einj_smi_t *)addr; |
| acpi_einj_trigger_table_t *tat; |
| if (!header) |
| return; |
| |
| printk(BIOS_DEBUG, "%s einj_smi = %p\n", __func__, einj_smi); |
| memset(einj_smi, 0, sizeof(acpi_einj_smi_t)); |
| tat = (acpi_einj_trigger_table_t *)((uint8_t *)einj_smi + sizeof(acpi_einj_smi_t)); |
| tat->header_size = 16; |
| tat->revision = 0; |
| tat->table_size = sizeof(acpi_einj_trigger_table_t) + |
| sizeof(acpi_einj_action_table_t) * actions - 1; |
| tat->entry_count = actions; |
| printk(BIOS_DEBUG, "%s trigger_action_table = %p\n", __func__, tat); |
| |
| for (i = 0; i < actions; i++) { |
| tat->trigger_action[i].action = TRIGGER_ERROR; |
| tat->trigger_action[i].instruction = NO_OP; |
| tat->trigger_action[i].flags = FLAG_IGNORE; |
| tat->trigger_action[i].reg.space_id = ACPI_ADDRESS_SPACE_MEMORY; |
| tat->trigger_action[i].reg.bit_width = 64; |
| tat->trigger_action[i].reg.bit_offset = 0; |
| tat->trigger_action[i].reg.access_size = ACPI_ACCESS_SIZE_QWORD_ACCESS; |
| tat->trigger_action[i].reg.addr = 0; |
| tat->trigger_action[i].value = 0; |
| tat->trigger_action[i].mask = 0xFFFFFFFF; |
| } |
| |
| acpi_einj_action_table_t default_actions[ACTION_COUNT] = { |
| [0] = { |
| .action = BEGIN_INJECT_OP, |
| .instruction = WRITE_REGISTER_VALUE, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->op_state), |
| .value = 0, |
| .mask = 0xFFFFFFFF |
| }, |
| [1] = { |
| .action = GET_TRIGGER_ACTION_TABLE, |
| .instruction = READ_REGISTER, |
| .flags = FLAG_IGNORE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->trigger_action_table), |
| .value = 0, |
| .mask = 0xFFFFFFFFFFFFFFFF |
| }, |
| [2] = { |
| .action = SET_ERROR_TYPE, |
| .instruction = WRITE_REGISTER, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->err_inject[0]), |
| .value = 0, |
| .mask = 0xFFFFFFFF |
| }, |
| [3] = { |
| .action = GET_ERROR_TYPE, |
| .instruction = READ_REGISTER, |
| .flags = FLAG_IGNORE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->err_inj_cap), |
| .value = 0, |
| .mask = 0xFFFFFFFF |
| }, |
| [4] = { |
| .action = END_INJECT_OP, |
| .instruction = WRITE_REGISTER_VALUE, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->op_state), |
| .value = 0, |
| .mask = 0xFFFFFFFF |
| |
| }, |
| [5] = { |
| .action = EXECUTE_INJECT_OP, |
| .instruction = WRITE_REGISTER_VALUE, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_IO(), |
| .value = 0x9a, |
| .mask = 0xFFFF, |
| }, |
| [6] = { |
| .action = CHECK_BUSY_STATUS, |
| .instruction = READ_REGISTER_VALUE, |
| .flags = FLAG_IGNORE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->op_status), |
| .value = 1, |
| .mask = 1, |
| }, |
| [7] = { |
| .action = GET_CMD_STATUS, |
| .instruction = READ_REGISTER, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->cmd_sts), |
| .value = 0, |
| .mask = 0x1fe, |
| }, |
| [8] = { |
| .action = SET_ERROR_TYPE_WITH_ADDRESS, |
| .instruction = WRITE_REGISTER, |
| .flags = FLAG_PRESERVE, |
| .reg = EINJ_REG_MEMORY((u64)(uintptr_t)&einj_smi->setaddrtable), |
| .value = 1, |
| .mask = 0xffffffff |
| } |
| }; |
| |
| einj_smi->err_inj_cap = ACPI_EINJ_DEFAULT_CAP; |
| einj_smi->trigger_action_table = (u64)(uintptr_t)tat; |
| |
| for (i = 0; i < ACTION_COUNT; i++) |
| printk(BIOS_DEBUG, "default_actions[%d].reg.addr is %llx\n", i, |
| default_actions[i].reg.addr); |
| |
| memset((void *)einj, 0, sizeof(*einj)); |
| |
| if (acpi_fill_header(header, "EINJ", EINJ, sizeof(acpi_einj_t)) != CB_SUCCESS) |
| return; |
| |
| inj_header->einj_header_size = sizeof(acpi_injection_header_t); |
| inj_header->entry_count = ACTION_COUNT; |
| |
| printk(BIOS_DEBUG, "%s einj->action_table = %p\n", |
| __func__, einj->action_table); |
| memcpy((void *)einj->action_table, (void *)default_actions, sizeof(einj->action_table)); |
| header->checksum = acpi_checksum((void *)einj, sizeof(*einj)); |
| } |
| |
| void acpi_create_vfct(const struct device *device, |
| acpi_vfct_t *vfct, |
| unsigned long (*acpi_fill_vfct)(const struct device *device, |
| acpi_vfct_t *vfct_struct, unsigned long current)) |
| { |
| acpi_header_t *header = &(vfct->header); |
| unsigned long current = (unsigned long)vfct + sizeof(acpi_vfct_t); |
| |
| memset((void *)vfct, 0, sizeof(acpi_vfct_t)); |
| |
| if (acpi_fill_header(header, "VFCT", VFCT, sizeof(acpi_vfct_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_vfct(device, vfct, current); |
| |
| /* If no BIOS image, return with header->length == 0. */ |
| if (!vfct->VBIOSImageOffset) |
| return; |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)vfct; |
| header->checksum = acpi_checksum((void *)vfct, header->length); |
| } |
| |
| void acpi_create_ipmi(const struct device *device, |
| struct acpi_spmi *spmi, |
| const u16 ipmi_revision, |
| const acpi_addr_t *addr, |
| const enum acpi_ipmi_interface_type type, |
| const s8 gpe_interrupt, |
| const u32 apic_interrupt, |
| const u32 uid) |
| { |
| acpi_header_t *header = &(spmi->header); |
| memset((void *)spmi, 0, sizeof(struct acpi_spmi)); |
| |
| if (acpi_fill_header(header, "SPMI", SPMI, sizeof(struct acpi_spmi)) != CB_SUCCESS) |
| return; |
| |
| spmi->reserved = 1; |
| |
| if (device->path.type == DEVICE_PATH_PCI) { |
| spmi->pci_device_flag = ACPI_IPMI_PCI_DEVICE_FLAG; |
| spmi->pci_segment_group = device->upstream->segment_group; |
| spmi->pci_bus = device->upstream->secondary; |
| spmi->pci_device = device->path.pci.devfn >> 3; |
| spmi->pci_function = device->path.pci.devfn & 0x7; |
| } else if (type != IPMI_INTERFACE_SSIF) { |
| memcpy(spmi->uid, &uid, sizeof(spmi->uid)); |
| } |
| |
| spmi->base_address = *addr; |
| spmi->specification_revision = ipmi_revision; |
| |
| spmi->interface_type = type; |
| |
| if (gpe_interrupt >= 0 && gpe_interrupt < 32) { |
| spmi->gpe = gpe_interrupt; |
| spmi->interrupt_type |= ACPI_IPMI_INT_TYPE_SCI; |
| } |
| if (apic_interrupt > 0) { |
| spmi->global_system_interrupt = apic_interrupt; |
| spmi->interrupt_type |= ACPI_IPMI_INT_TYPE_APIC; |
| } |
| |
| /* Calculate checksum. */ |
| header->checksum = acpi_checksum((void *)spmi, 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)); |
| |
| if (acpi_fill_header(header, "IVRS", IVRS, sizeof(acpi_ivrs_t)) != CB_SUCCESS) |
| return; |
| |
| 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); |
| } |
| |
| void acpi_create_crat(struct acpi_crat_header *crat, |
| unsigned long (*acpi_fill_crat)(struct acpi_crat_header *crat_struct, |
| unsigned long current)) |
| { |
| acpi_header_t *header = &(crat->header); |
| unsigned long current = (unsigned long)crat + sizeof(struct acpi_crat_header); |
| |
| memset((void *)crat, 0, sizeof(struct acpi_crat_header)); |
| |
| if (acpi_fill_header(header, "CRAT", CRAT, sizeof(struct acpi_crat_header)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_crat(crat, current); |
| |
| /* (Re)calculate length and checksum. */ |
| header->length = current - (unsigned long)crat; |
| header->checksum = acpi_checksum((void *)crat, header->length); |
| } |
| |
| static 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); |
| |
| if (acpi_fill_header(header, "DBG2", DBG2, sizeof(acpi_dbg2_header_t)) != CB_SUCCESS) |
| return; |
| |
| /* 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); |
| } |
| |
| static unsigned long acpi_write_dbg2_uart(acpi_rsdp_t *rsdp, unsigned long current, |
| int space_id, uint64_t base, uint32_t size, |
| int access_size, const char *name) |
| { |
| acpi_dbg2_header_t *dbg2 = (acpi_dbg2_header_t *)current; |
| acpi_addr_t address; |
| |
| memset(&address, 0, sizeof(address)); |
| |
| address.space_id = space_id; |
| address.addrl = (uint32_t)base; |
| address.addrh = (uint32_t)((base >> 32) & 0xffffffff); |
| address.access_size = access_size; |
| |
| int subtype; |
| /* 16550-compatible with parameters defined in Generic Address Structure */ |
| if (CONFIG(DRIVERS_UART_8250IO) || CONFIG(DRIVERS_UART_8250MEM)) |
| subtype = ACPI_DBG2_PORT_SERIAL_16550; |
| else if (CONFIG(DRIVERS_UART_PL011)) |
| subtype = ACPI_DBG2_PORT_SERIAL_ARM_PL011; |
| else |
| return current; |
| |
| acpi_create_dbg2(dbg2, |
| ACPI_DBG2_PORT_SERIAL, |
| subtype, |
| &address, size, |
| name); |
| |
| if (dbg2->header.length) { |
| current += dbg2->header.length; |
| current = acpi_align_current(current); |
| acpi_add_table(rsdp, dbg2); |
| } |
| |
| return current; |
| } |
| |
| unsigned long acpi_write_dbg2_pci_uart(acpi_rsdp_t *rsdp, unsigned long current, |
| const struct device *dev, uint8_t access_size) |
| { |
| struct resource *res; |
| |
| if (!dev) { |
| printk(BIOS_DEBUG, "%s: Device not found\n", __func__); |
| return current; |
| } |
| if (!dev->enabled) { |
| printk(BIOS_INFO, "%s: Device not enabled\n", __func__); |
| return current; |
| } |
| res = probe_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; |
| } |
| |
| int space_id; |
| if (res->flags & IORESOURCE_IO) |
| space_id = ACPI_ADDRESS_SPACE_IO; |
| else if (res->flags & IORESOURCE_MEM) |
| space_id = ACPI_ADDRESS_SPACE_MEMORY; |
| else { |
| printk(BIOS_ERR, "%s: Unknown address space type\n", __func__); |
| return current; |
| } |
| |
| return acpi_write_dbg2_uart(rsdp, current, space_id, res->base, res->size, access_size, acpi_device_path(dev)); |
| } |
| |
| unsigned long acpi_pl011_write_dbg2_uart(acpi_rsdp_t *rsdp, unsigned long current, |
| uint64_t base, const char *name) |
| { |
| return acpi_write_dbg2_uart(rsdp, current, ACPI_ADDRESS_SPACE_MEMORY, base, |
| sizeof(struct pl011_uart), ACPI_ACCESS_SIZE_DWORD_ACCESS, |
| name); |
| } |
| |
| unsigned long acpi_16550_mmio32_write_dbg2_uart(acpi_rsdp_t *rsdp, unsigned long current, |
| uint64_t base, const char *name) |
| { |
| return acpi_write_dbg2_uart(rsdp, current, ACPI_ADDRESS_SPACE_MEMORY, base, |
| 0x100, ACPI_ACCESS_SIZE_DWORD_ACCESS, |
| name); |
| } |
| |
| static void acpi_create_facs(void *header) |
| { |
| acpi_facs_t *facs = header; |
| |
| 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); |
| |
| if (acpi_fill_header(header, "RSDT", RSDT, sizeof(acpi_rsdt_t)) != CB_SUCCESS) |
| return; |
| |
| /* 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); |
| |
| if (acpi_fill_header(header, "XSDT", XSDT, sizeof(acpi_xsdt_t)) != CB_SUCCESS) |
| return; |
| |
| /* 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; |
| if (header) |
| 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)); |
| |
| if (acpi_fill_header(header, "HEST", HEST, sizeof(acpi_hest_t)) != CB_SUCCESS) |
| return; |
| |
| acpi_fill_hest(hest); |
| |
| /* Calculate checksums. */ |
| header->checksum = acpi_checksum((void *)hest, header->length); |
| } |
| |
| /* ACPI 3.0b */ |
| static void acpi_create_bert(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_BERT)) |
| return; |
| |
| acpi_bert_t *bert = (acpi_bert_t *)header; |
| |
| void *region; |
| size_t size; |
| if (acpi_soc_get_bert_region(®ion, &size) != CB_SUCCESS) |
| return; |
| |
| if (acpi_fill_header(header, "BERT", BERT, sizeof(acpi_bert_t)) != CB_SUCCESS) |
| return; |
| |
| bert->error_region = (uintptr_t)region; |
| bert->region_length = (size_t)size; |
| } |
| |
| __weak void arch_fill_fadt(acpi_fadt_t *fadt) { } |
| __weak void soc_fill_fadt(acpi_fadt_t *fadt) { } |
| __weak void mainboard_fill_fadt(acpi_fadt_t *fadt) { } |
| |
| static acpi_header_t *dsdt; |
| static void acpi_create_fadt(acpi_header_t *header, void *arg1) |
| { |
| acpi_fadt_t *fadt = (acpi_fadt_t *)header; |
| acpi_facs_t *facs = (acpi_facs_t *)(*(acpi_facs_t **)arg1); |
| |
| if (acpi_fill_header(header, "FACP", FADT, sizeof(acpi_fadt_t)) != CB_SUCCESS) |
| return; |
| |
| fadt->FADT_MinorVersion = get_acpi_fadt_minor_version(); |
| if ((uintptr_t)facs <= UINT32_MAX) |
| fadt->firmware_ctrl = (uintptr_t)facs; |
| else |
| fadt->x_firmware_ctl_h = (uint32_t)((uint64_t)(uintptr_t)facs >> 32); |
| fadt->x_firmware_ctl_l = (uint32_t)(uintptr_t)facs; |
| |
| if ((uintptr_t)dsdt <= UINT32_MAX) |
| fadt->dsdt = (uintptr_t)dsdt; |
| else |
| fadt->x_dsdt_h = (uint32_t)((uint64_t)(uintptr_t)dsdt >> 32); |
| fadt->x_dsdt_l = (uint32_t)(uintptr_t)dsdt; |
| |
| /* should be 0 ACPI 3.0 */ |
| fadt->reserved = 0; |
| |
| /* P_LVLx latencies are not used as CPU _CST will override them. */ |
| fadt->p_lvl2_lat = ACPI_FADT_C2_NOT_SUPPORTED; |
| fadt->p_lvl3_lat = ACPI_FADT_C3_NOT_SUPPORTED; |
| |
| /* Use CPU _PTC instead to provide P_CNT details. */ |
| fadt->duty_offset = 0; |
| fadt->duty_width = 0; |
| |
| fadt->preferred_pm_profile = acpi_get_preferred_pm_profile(); |
| |
| arch_fill_fadt(fadt); |
| |
| acpi_fill_fadt(fadt); |
| |
| soc_fill_fadt(fadt); |
| mainboard_fill_fadt(fadt); |
| } |
| |
| static void acpi_create_lpit(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_LPIT)) |
| return; |
| |
| acpi_lpit_t *lpit = (acpi_lpit_t *)header; |
| unsigned long current = (unsigned long)lpit + sizeof(acpi_lpit_t); |
| |
| if (acpi_fill_header(header, "LPIT", LPIT, sizeof(acpi_lpit_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_fill_lpit(current); |
| |
| /* (Re)calculate length. */ |
| header->length = current - (unsigned long)lpit; |
| } |
| |
| static void acpi_create_gtdt(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_GTDT)) |
| return; |
| |
| acpi_gtdt_t *gtdt = (acpi_gtdt_t *)header; |
| unsigned long current = (unsigned long)gtdt + sizeof(acpi_gtdt_t); |
| |
| if (acpi_fill_header(header, "GTDT", GTDT, sizeof(acpi_gtdt_t)) != CB_SUCCESS) |
| return; |
| |
| /* Fill out header fields. */ |
| gtdt->platform_timer_offset = sizeof(acpi_gtdt_t); |
| |
| acpi_soc_fill_gtdt(gtdt); |
| current = acpi_soc_gtdt_add_timers(>dt->platform_timer_count, current); |
| |
| /* (Re)calculate length. */ |
| header->length = current - (unsigned long)gtdt; |
| } |
| |
| unsigned long acpi_gtdt_add_timer_block(unsigned long current, const uint64_t address, |
| struct acpi_gtdt_timer_entry *timers, size_t number) |
| { |
| struct acpi_gtdt_timer_block *block = (struct acpi_gtdt_timer_block *)current; |
| memset(block, 0, sizeof(struct acpi_gtdt_timer_block)); |
| |
| assert(number < 8 && number != 0); |
| const size_t entries_size = number * sizeof(struct acpi_gtdt_timer_entry); |
| |
| block->header.type = ACPI_GTDT_TYPE_TIMER_BLOCK; |
| block->header.length = sizeof(struct acpi_gtdt_timer_block) |
| + entries_size; |
| block->block_address = address; |
| block->timer_count = number; |
| block->timer_offset = sizeof(struct acpi_gtdt_timer_block); |
| current += sizeof(struct acpi_gtdt_timer_block); |
| memcpy((void *)current, timers, entries_size); |
| current += entries_size; |
| return current; |
| } |
| |
| unsigned long acpi_gtdt_add_watchdog(unsigned long current, uint64_t refresh_frame, |
| uint64_t control_frame, uint32_t gsiv, uint32_t flags) |
| { |
| struct acpi_gtdt_watchdog *wd = (struct acpi_gtdt_watchdog *)current; |
| memset(wd, 0, sizeof(struct acpi_gtdt_watchdog)); |
| |
| wd->header.type = ACPI_GTDT_TYPE_WATCHDOG; |
| wd->header.length = sizeof(struct acpi_gtdt_watchdog); |
| wd->refresh_frame_address = refresh_frame; |
| wd->control_frame_address = control_frame; |
| wd->timer_interrupt = gsiv; |
| wd->timer_flags = flags; |
| |
| return current + sizeof(struct acpi_gtdt_watchdog); |
| } |
| |
| static void acpi_create_iort(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_IORT)) |
| return; |
| |
| acpi_iort_t *iort = (acpi_iort_t *)header; |
| unsigned long current = (unsigned long)iort + sizeof(acpi_iort_t); |
| |
| if (acpi_fill_header(header, "IORT", IORT, sizeof(acpi_iort_t)) != CB_SUCCESS) |
| return; |
| |
| iort->node_count = 0; |
| iort->node_offset = current - (unsigned long)iort; |
| |
| current = acpi_soc_fill_iort(iort, current); |
| |
| /* (Re)calculate length */ |
| header->length = current - (unsigned long)iort; |
| } |
| |
| static void acpi_create_wdat(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_WDAT_WDT)) |
| return; |
| |
| acpi_wdat_t *wdat = (acpi_wdat_t *)header; |
| unsigned long current = (unsigned long)wdat + sizeof(acpi_wdat_t); |
| |
| memset((void *)wdat, 0, sizeof(acpi_wdat_t)); |
| |
| if (acpi_fill_header(header, "WDAT", WDAT, sizeof(acpi_wdat_t)) != CB_SUCCESS) |
| return; |
| |
| current = acpi_soc_fill_wdat(wdat, current); |
| |
| /* (Re)calculate length. */ |
| header->length = current - (unsigned long)wdat; |
| } |
| |
| unsigned long acpi_create_lpi_desc_ncst(acpi_lpi_desc_ncst_t *lpi_desc, uint16_t uid) |
| { |
| memset(lpi_desc, 0, sizeof(acpi_lpi_desc_ncst_t)); |
| lpi_desc->header.length = sizeof(acpi_lpi_desc_ncst_t); |
| lpi_desc->header.type = ACPI_LPI_DESC_TYPE_NATIVE_CSTATE; |
| lpi_desc->header.uid = uid; |
| |
| return lpi_desc->header.length; |
| } |
| |
| static void acpi_create_pptt(acpi_header_t *header, void *unused) |
| { |
| if (!CONFIG(ACPI_PPTT)) |
| return; |
| |
| if (acpi_fill_header(header, "PPTT", PPTT, sizeof(acpi_pptt_t)) != CB_SUCCESS) |
| return; |
| |
| acpi_pptt_t *pptt = (acpi_pptt_t *)header; |
| acpi_create_pptt_body(pptt); |
| } |
| |
| static uint8_t acpi_spcr_type(void) |
| { |
| /* 16550-compatible with parameters defined in Generic Address Structure */ |
| if (CONFIG(DRIVERS_UART_8250IO) || CONFIG(DRIVERS_UART_8250MEM)) |
| return 0x12; |
| if (CONFIG(DRIVERS_UART_PL011)) |
| return 0x3; |
| |
| printk(BIOS_ERR, "%s: unknown serial type\n", __func__); |
| return 0xff; |
| } |
| |
| static void acpi_create_spcr(acpi_header_t *header, void *unused) |
| { |
| acpi_spcr_t *spcr = (acpi_spcr_t *)header; |
| struct lb_serial serial; |
| |
| if (!CONFIG(CONSOLE_SERIAL)) |
| return; |
| |
| if (fill_lb_serial(&serial) != CB_SUCCESS) |
| return; |
| |
| if (acpi_fill_header(header, "SPCR", SPCR, sizeof(acpi_spcr_t)) != CB_SUCCESS) |
| return; |
| |
| spcr->interface_type = acpi_spcr_type(); |
| assert(serial.type == LB_SERIAL_TYPE_IO_MAPPED |
| || serial.type == LB_SERIAL_TYPE_MEMORY_MAPPED); |
| spcr->base_address.space_id = serial.type == LB_SERIAL_TYPE_IO_MAPPED ? |
| ACPI_ADDRESS_SPACE_IO : ACPI_ADDRESS_SPACE_MEMORY; |
| spcr->base_address.bit_width = serial.regwidth * 8; |
| spcr->base_address.bit_offset = 0; |
| switch (serial.regwidth) { |
| case 1: |
| spcr->base_address.access_size = ACPI_ACCESS_SIZE_BYTE_ACCESS; |
| break; |
| case 2: |
| spcr->base_address.access_size = ACPI_ACCESS_SIZE_WORD_ACCESS; |
| break; |
| case 4: |
| spcr->base_address.access_size = ACPI_ACCESS_SIZE_DWORD_ACCESS; |
| break; |
| default: |
| printk(BIOS_ERR, "%s, Invalid serial regwidth\n", __func__); |
| } |
| |
| spcr->base_address.addrl = serial.baseaddr; |
| spcr->base_address.addrh = 0; |
| spcr->interrupt_type = 0; |
| spcr->irq = 0; |
| spcr->configured_baudrate = 0; /* Have the OS use whatever is currently set */ |
| spcr->parity = 0; |
| spcr->stop_bits = 1; |
| spcr->flow_control = 0; |
| spcr->terminal_type = 2; /* 2 = VT-UTF8 */ |
| spcr->language = 0; |
| spcr->pci_did = 0xffff; |
| spcr->pci_vid = 0xffff; |
| |
| header->checksum = acpi_checksum((void *)spcr, header->length); |
| } |
| |
| unsigned long __weak fw_cfg_acpi_tables(unsigned long start) |
| { |
| return 0; |
| } |
| |
| void preload_acpi_dsdt(void) |
| { |
| const char *file = CONFIG_CBFS_PREFIX "/dsdt.aml"; |
| |
| if (!CONFIG(CBFS_PRELOAD)) |
| return; |
| |
| printk(BIOS_DEBUG, "Preloading %s\n", file); |
| cbfs_preload(file); |
| } |
| |
| static void acpi_create_dsdt(acpi_header_t *header, void *dsdt_file_arg) |
| { |
| dsdt = header; |
| acpi_header_t *dsdt_file = *(acpi_header_t **)dsdt_file_arg; |
| unsigned long current = (unsigned long)header; |
| |
| 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); |
| |
| if (CONFIG(ACPI_SOC_NVS)) |
| acpi_fill_gnvs(); |
| if (CONFIG(CHROMEOS_NVS)) |
| acpi_fill_cnvs(); |
| |
| 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. */ |
| dsdt->length = current - (unsigned long)dsdt; |
| } |
| } |
| |
| static void acpi_create_slic(acpi_header_t *header, void *slic_file_arg) |
| { |
| acpi_header_t *slic_file = *(acpi_header_t **)slic_file_arg; |
| acpi_header_t *slic = header; |
| if (slic_file) |
| memcpy(slic, slic_file, slic_file->length); |
| } |
| |
| static uintptr_t coreboot_rsdp; |
| |
| uintptr_t get_coreboot_rsdp(void) |
| { |
| return coreboot_rsdp; |
| } |
| |
| static void acpixtract_compatible_hexdump(const void *memory, size_t length) |
| { |
| size_t i, j; |
| uint8_t *line; |
| size_t num_bytes; |
| |
| for (i = 0; i < length; i += 16) { |
| num_bytes = MIN(length - i, 16); |
| line = ((uint8_t *)memory) + i; |
| |
| printk(BIOS_SPEW, " %04zX:", i); |
| for (j = 0; j < num_bytes; j++) |
| printk(BIOS_SPEW, " %02x", line[j]); |
| for (; j < 16; j++) |
| printk(BIOS_SPEW, " "); |
| printk(BIOS_SPEW, " "); |
| for (j = 0; j < num_bytes; j++) |
| printk(BIOS_SPEW, "%c", |
| isprint(line[j]) ? line[j] : '.'); |
| printk(BIOS_SPEW, "\n"); |
| } |
| } |
| |
| static void acpidump_print(void *table_ptr) |
| { |
| if (table_ptr == NULL) |
| return; |
| const acpi_header_t *header = (acpi_header_t *)table_ptr; |
| const size_t table_size = header->length; |
| printk(BIOS_SPEW, "%.4s @ 0x0000000000000000\n", header->signature); |
| acpixtract_compatible_hexdump(table_ptr, table_size); |
| printk(BIOS_SPEW, "\n"); |
| } |
| |
| unsigned long write_acpi_tables(const unsigned long start) |
| { |
| unsigned long current; |
| acpi_rsdp_t *rsdp; |
| acpi_rsdt_t *rsdt = NULL; |
| acpi_xsdt_t *xsdt = NULL; |
| acpi_facs_t *facs = NULL; |
| acpi_header_t *slic_file; |
| acpi_header_t *ssdt = NULL; |
| acpi_header_t *dsdt_file; |
| struct device *dev; |
| unsigned long fw; |
| size_t slic_size, dsdt_size; |
| char oem_id[6], oem_table_id[8]; |
| |
| const struct acpi_table_generator { |
| void (*create_table)(acpi_header_t *table, void *arg); |
| void *args; |
| size_t min_size; |
| } tables[] = { |
| { acpi_create_dsdt, &dsdt_file, sizeof(acpi_header_t) }, |
| { acpi_create_fadt, &facs, sizeof(acpi_fadt_t) }, |
| { acpi_create_slic, &slic_file, sizeof(acpi_header_t) }, |
| { acpi_create_ssdt_generator, NULL, sizeof(acpi_header_t) }, |
| { acpi_create_mcfg, NULL, sizeof(acpi_mcfg_t) }, |
| { acpi_create_tcpa, NULL, sizeof(acpi_tcpa_t) }, |
| { acpi_create_tpm2, NULL, sizeof(acpi_tpm2_t) }, |
| { acpi_create_lpit, NULL, sizeof(acpi_lpit_t) }, |
| { acpi_create_madt, NULL, sizeof(acpi_header_t) }, |
| { acpi_create_bert, NULL, sizeof(acpi_bert_t) }, |
| { acpi_create_spcr, NULL, sizeof(acpi_spcr_t) }, |
| { acpi_create_gtdt, NULL, sizeof(acpi_gtdt_t) }, |
| { acpi_create_pptt, NULL, sizeof(acpi_pptt_t) }, |
| { acpi_create_iort, NULL, sizeof(acpi_iort_t) }, |
| { acpi_create_wdat, NULL, sizeof(acpi_wdat_t) }, |
| }; |
| |
| current = start; |
| |
| /* Align ACPI tables to 16byte */ |
| current = acpi_align_current(current); |
| |
| /* Special case for qemu */ |
| fw = fw_cfg_acpi_tables(current); |
| if (fw) { |
| rsdp = NULL; |
| /* Find RSDP. */ |
| for (void *p = (void *)current; p < (void *)fw; p += 16) { |
| if (valid_rsdp((acpi_rsdp_t *)p)) { |
| rsdp = p; |
| coreboot_rsdp = (uintptr_t)rsdp; |
| break; |
| } |
| } |
| if (!rsdp) |
| return fw; |
| |
| current = fw; |
| current = acpi_align_current(current); |
| if (rsdp->xsdt_address == 0) { |
| acpi_rsdt_t *existing_rsdt = (acpi_rsdt_t *)(uintptr_t)rsdp->rsdt_address; |
| |
| /* |
| * Qemu only provides a smaller ACPI 1.0 RSDP, thus |
| * allocate a bigger ACPI 2.0 RSDP structure. |
| */ |
| rsdp = (acpi_rsdp_t *)current; |
| current += sizeof(acpi_rsdp_t); |
| coreboot_rsdp = (uintptr_t)rsdp; |
| |
| xsdt = (acpi_xsdt_t *)current; |
| current += sizeof(acpi_xsdt_t); |
| current = acpi_align_current(current); |
| |
| /* |
| * Qemu only creates an RSDT. |
| * Add an XSDT based on the existing RSDT entries. |
| */ |
| acpi_write_rsdp(rsdp, existing_rsdt, xsdt, oem_id); |
| acpi_write_xsdt(xsdt, oem_id, oem_table_id); |
| /* |
| * Copy existing entries to the new XSDT. This will override existing |
| * RSDT entries with the same value. |
| */ |
| for (int i = 0; existing_rsdt->entry[i]; i++) |
| acpi_add_table(rsdp, (void *)(uintptr_t)existing_rsdt->entry[i]); |
| } |
| |
| /* Add BOOT0000 for Linux google firmware driver */ |
| printk(BIOS_DEBUG, "ACPI: * SSDT\n"); |
| ssdt = (acpi_header_t *)current; |
| current += 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 = asl_revision; |
| ssdt->length = sizeof(acpi_header_t); |
| |
| acpigen_set_current((char *)current); |
| |
| /* Write object to declare coreboot tables */ |
| acpi_ssdt_write_cbtable(); |
| |
| /* (Re)calculate length and checksum. */ |
| ssdt->length = current - (unsigned long)ssdt; |
| ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length); |
| |
| acpi_create_ssdt_generator(ssdt, NULL); |
| |
| acpi_add_table(rsdp, ssdt); |
| |
| return current; |
| } |
| |
| dsdt_file = cbfs_map(CONFIG_CBFS_PREFIX "/dsdt.aml", &dsdt_size); |
| if (!dsdt_file) { |
| printk(BIOS_ERR, "No DSDT file, skipping ACPI tables\n"); |
| return start; |
| } |
| |
| 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"); |
| cbfs_unmap(dsdt_file); |
| return start; |
| } |
| |
| slic_file = cbfs_map(CONFIG_CBFS_PREFIX "/slic", &slic_size); |
| if (slic_file |
| && (slic_file->length > slic_size |
| || slic_file->length < sizeof(acpi_header_t) |
| || (memcmp(slic_file->signature, "SLIC", 4) != 0 |
| && memcmp(slic_file->signature, "MSDM", 4) != 0))) { |
| cbfs_unmap(slic_file); |
| 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, RSDT for ACPI 1.0 compat, otherwise XSDT */ |
| rsdp = (acpi_rsdp_t *)current; |
| coreboot_rsdp = (uintptr_t)rsdp; |
| current += sizeof(acpi_rsdp_t); |
| current = acpi_align_current(current); |
| if (current + sizeof(acpi_rsdt_t) - 1 <= UINT32_MAX) { |
| rsdt = (acpi_rsdt_t *)current; |
| current += sizeof(acpi_rsdt_t); |
| current = acpi_align_current(current); |
| } else { |
| printk(BIOS_INFO, "Not adding RSDT because tables reside above 4G."); |
| } |
| |
| 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); |
| |
| if (ENV_X86) { |
| printk(BIOS_DEBUG, "ACPI: * FACS\n"); |
| current = ALIGN_UP(current, 64); |
| facs = (acpi_facs_t *)current; |
| current += sizeof(acpi_facs_t); |
| current = acpi_align_current(current); |
| acpi_create_facs(facs); |
| } |
| |
| for (size_t i = 0; i < ARRAY_SIZE(tables); i++) { |
| acpi_header_t *header = (acpi_header_t *)current; |
| memset(header, 0, tables[i].min_size); |
| tables[i].create_table(header, tables[i].args); |
| if (header->length < tables[i].min_size) |
| continue; |
| header->checksum = 0; |
| header->checksum = acpi_checksum((void *)header, header->length); |
| current += header->length; |
| current = acpi_align_current(current); |
| |
| if (tables[i].create_table == acpi_create_dsdt) |
| continue; |
| |
| printk(BIOS_DEBUG, "ACPI: * %.4s\n", header->signature); |
| acpi_add_table(rsdp, header); |
| } |
| |
| /* |
| * cbfs_unmap() uses mem_pool_free() which works correctly only |
| * if freeing is done in reverse order than memory allocation. |
| * This is why unmapping of dsdt_file must be done after |
| * unmapping slic file. |
| */ |
| cbfs_unmap(slic_file); |
| cbfs_unmap(dsdt_file); |
| |
| 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"); |
| |
| if (CONFIG(DEBUG_ACPICA_COMPATIBLE)) { |
| printk(BIOS_DEBUG, "Printing ACPI tables in ACPICA compatible format\n"); |
| if (facs) |
| acpidump_print(facs); |
| acpidump_print(dsdt); |
| for (size_t i = 0; xsdt->entry[i] != 0; i++) { |
| acpidump_print((void *)(uintptr_t)xsdt->entry[i]); |
| } |
| printk(BIOS_DEBUG, "Done printing ACPI tables in ACPICA compatible format\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_xsdt_t *xsdt; |
| acpi_facs_t *facs; |
| acpi_fadt_t *fadt = NULL; |
| acpi_rsdp_t *rsdp = NULL; |
| void *wake_vec; |
| int i; |
| |
| if (!acpi_is_wakeup_s3()) |
| 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) { |
| printk(BIOS_ALERT, |
| "No RSDP found, wake up from S3 not possible.\n"); |
| return NULL; |
| } |
| |
| printk(BIOS_DEBUG, "RSDP found at %p\n", rsdp); |
| xsdt = (acpi_xsdt_t *)(uintptr_t)rsdp->xsdt_address; |
| |
| end = (char *)xsdt + xsdt->header.length; |
| printk(BIOS_DEBUG, "XSDT found at %p ends at %p\n", xsdt, end); |
| |
| for (i = 0; ((char *)&xsdt->entry[i]) < end; i++) { |
| fadt = (acpi_fadt_t *)(uintptr_t)xsdt->entry[i]; |
| if (strncmp((char *)fadt, "FACP", 4) == 0) |
| break; |
| fadt = NULL; |
| } |
| |
| if (fadt == NULL) { |
| printk(BIOS_ALERT, |
| "No FADT found, wake up from S3 not possible.\n"); |
| return NULL; |
| } |
| |
| printk(BIOS_DEBUG, "FADT found at %p\n", fadt); |
| facs = (acpi_facs_t *)(uintptr_t)((uint64_t)fadt->x_firmware_ctl_l |
| | (uint64_t)fadt->x_firmware_ctl_h << 32); |
| |
| if (facs == NULL) { |
| printk(BIOS_ALERT, |
| "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 */ |
| } |
| |
| u8 get_acpi_fadt_minor_version(void) |
| { |
| return ACPI_FADT_MINOR_VERSION_0; |
| } |
| |
| int get_acpi_table_revision(enum acpi_tables table) |
| { |
| switch (table) { |
| case FADT: |
| return ACPI_FADT_REV_ACPI_6; |
| case MADT: /* ACPI 3.0: 2, ACPI 4.0/5.0: 3, ACPI 6.2b/6.3: 5 */ |
| return 3; |
| case MCFG: |
| return 1; |
| case TCPA: |
| return 2; |
| case TPM2: |
| return 4; |
| case SSDT: /* ACPI 3.0 up to 6.3: 2 */ |
| return 2; |
| case SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 up to 6.4: 3 */ |
| return 3; |
| case HMAT: /* ACPI 6.4: 2 */ |
| return 2; |
| case DMAR: |
| return 1; |
| case SLIT: /* ACPI 2.0 up to 6.3: 1 */ |
| return 1; |
| case SPMI: /* IMPI 2.0 */ |
| return 5; |
| case HPET: /* Currently 1. Table added in ACPI 2.0. */ |
| return 1; |
| case VFCT: /* ACPI 2.0/3.0/4.0: 1 */ |
| return 1; |
| case IVRS: |
| return IVRS_FORMAT_MIXED; |
| case DBG2: |
| return 0; |
| case FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 up to 6.3: 2 */ |
| return 1; |
| case RSDT: /* ACPI 1.0 up to 6.3: 1 */ |
| return 1; |
| case XSDT: /* ACPI 2.0 up to 6.3: 1 */ |
| return 1; |
| case RSDP: /* ACPI 2.0 up to 6.3: 2 */ |
| return 2; |
| case EINJ: |
| return 1; |
| case HEST: |
| return 1; |
| case NHLT: |
| return 5; |
| case BERT: |
| return 1; |
| case CEDT: /* CXL 3.0 section 9.17.1 */ |
| return 1; |
| case CRAT: |
| return 1; |
| case LPIT: /* ACPI 5.1 up to 6.3: 0 */ |
| return 0; |
| case SPCR: |
| return 4; |
| case GTDT: |
| return 3; |
| case PPTT: /* ACPI 6.4 */ |
| return 3; |
| case IORT: /* IO Remapping Table E.e */ |
| return 6; |
| case WDAT: |
| return 1; |
| default: |
| return -1; |
| } |
| return -1; |
| } |