projects / J-u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| 91fe8b79 SG |
1 | // SPDX-License-Identifier: GPL-2.0+ |
| 2 | /* | |
| 3 | * Generic code used to generate ACPI tables | |
| 4 | * | |
| 5 | * Copyright 2019 Google LLC | |
| 6 | */ | |
| 7 | ||
| 8 | #include <common.h> | |
| 9 | #include <acpi/acpi_table.h> | |
| bfeb5d46 SG |
10 | #include <dm.h> |
| 11 | #include <cpu.h> | |
| 93f7f827 | 12 | #include <version.h> |
| bfeb5d46 | 13 | |
| bfeb5d46 SG |
14 | int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags) |
| 15 | { | |
| 16 | struct acpi_table_header *header = &dmar->header; | |
| 17 | struct cpu_info info; | |
| 18 | struct udevice *cpu; | |
| 19 | int ret; | |
| 20 | ||
| 21 | ret = uclass_first_device(UCLASS_CPU, &cpu); | |
| 22 | if (ret) | |
| 23 | return log_msg_ret("cpu", ret); | |
| 24 | ret = cpu_get_info(cpu, &info); | |
| 25 | if (ret) | |
| 26 | return log_msg_ret("info", ret); | |
| 27 | memset((void *)dmar, 0, sizeof(struct acpi_dmar)); | |
| 28 | ||
| 29 | /* Fill out header fields. */ | |
| 30 | acpi_fill_header(&dmar->header, "DMAR"); | |
| 31 | header->length = sizeof(struct acpi_dmar); | |
| 32 | header->revision = acpi_get_table_revision(ACPITAB_DMAR); | |
| 33 | ||
| 34 | dmar->host_address_width = info.address_width - 1; | |
| 35 | dmar->flags = flags; | |
| 36 | ||
| 37 | return 0; | |
| 38 | } | |
| 91fe8b79 SG |
39 | |
| 40 | int acpi_get_table_revision(enum acpi_tables table) | |
| 41 | { | |
| 42 | switch (table) { | |
| 43 | case ACPITAB_FADT: | |
| 44 | return ACPI_FADT_REV_ACPI_3_0; | |
| 45 | case ACPITAB_MADT: | |
| 46 | return ACPI_MADT_REV_ACPI_3_0; | |
| 47 | case ACPITAB_MCFG: | |
| 48 | return ACPI_MCFG_REV_ACPI_3_0; | |
| 49 | case ACPITAB_TCPA: | |
| 50 | /* This version and the rest are open-coded */ | |
| 51 | return 2; | |
| 52 | case ACPITAB_TPM2: | |
| 53 | return 4; | |
| 54 | case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */ | |
| 55 | return 2; | |
| 56 | case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */ | |
| 57 | return 1; /* TODO Should probably be upgraded to 2 */ | |
| 58 | case ACPITAB_DMAR: | |
| 59 | return 1; | |
| 60 | case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */ | |
| 61 | return 1; | |
| 62 | case ACPITAB_SPMI: /* IMPI 2.0 */ | |
| 63 | return 5; | |
| 64 | case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */ | |
| 65 | return 1; | |
| 66 | case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */ | |
| 67 | return 1; | |
| 68 | case ACPITAB_IVRS: | |
| 69 | return IVRS_FORMAT_FIXED; | |
| 70 | case ACPITAB_DBG2: | |
| 71 | return 0; | |
| 72 | case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */ | |
| 73 | return 1; | |
| 74 | case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */ | |
| 75 | return 1; | |
| 76 | case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */ | |
| 77 | return 1; | |
| 78 | case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */ | |
| 79 | return 2; | |
| 80 | case ACPITAB_HEST: | |
| 81 | return 1; | |
| 82 | case ACPITAB_NHLT: | |
| 83 | return 5; | |
| 84 | case ACPITAB_BERT: | |
| 85 | return 1; | |
| 86 | case ACPITAB_SPCR: | |
| 87 | return 2; | |
| 88 | default: | |
| 89 | return -EINVAL; | |
| 90 | } | |
| 91 | } | |
| 93f7f827 SG |
92 | |
| 93 | void acpi_fill_header(struct acpi_table_header *header, char *signature) | |
| 94 | { | |
| 95 | memcpy(header->signature, signature, 4); | |
| 96 | memcpy(header->oem_id, OEM_ID, 6); | |
| 97 | memcpy(header->oem_table_id, OEM_TABLE_ID, 8); | |
| 98 | header->oem_revision = U_BOOT_BUILD_DATE; | |
| 99 | memcpy(header->aslc_id, ASLC_ID, 4); | |
| 100 | } |