| Simon Glass | b2672ea | 2020-04-08 16:57:38 -0600 | [diff] [blame] | 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> |
| Simon Glass | e962989 | 2020-04-08 16:57:39 -0600 | [diff] [blame] | 10 | #include <dm.h> |
| 11 | #include <cpu.h> |
| 12 | |
| 13 | /* Temporary change to ensure bisectability */ |
| 14 | #ifndef CONFIG_SANDBOX |
| 15 | int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags) |
| 16 | { |
| 17 | struct acpi_table_header *header = &dmar->header; |
| 18 | struct cpu_info info; |
| 19 | struct udevice *cpu; |
| 20 | int ret; |
| 21 | |
| 22 | ret = uclass_first_device(UCLASS_CPU, &cpu); |
| 23 | if (ret) |
| 24 | return log_msg_ret("cpu", ret); |
| 25 | ret = cpu_get_info(cpu, &info); |
| 26 | if (ret) |
| 27 | return log_msg_ret("info", ret); |
| 28 | memset((void *)dmar, 0, sizeof(struct acpi_dmar)); |
| 29 | |
| 30 | /* Fill out header fields. */ |
| 31 | acpi_fill_header(&dmar->header, "DMAR"); |
| 32 | header->length = sizeof(struct acpi_dmar); |
| 33 | header->revision = acpi_get_table_revision(ACPITAB_DMAR); |
| 34 | |
| 35 | dmar->host_address_width = info.address_width - 1; |
| 36 | dmar->flags = flags; |
| 37 | |
| 38 | return 0; |
| 39 | } |
| 40 | #endif |
| Simon Glass | b2672ea | 2020-04-08 16:57:38 -0600 | [diff] [blame] | 41 | |
| 42 | int acpi_get_table_revision(enum acpi_tables table) |
| 43 | { |
| 44 | switch (table) { |
| 45 | case ACPITAB_FADT: |
| 46 | return ACPI_FADT_REV_ACPI_3_0; |
| 47 | case ACPITAB_MADT: |
| 48 | return ACPI_MADT_REV_ACPI_3_0; |
| 49 | case ACPITAB_MCFG: |
| 50 | return ACPI_MCFG_REV_ACPI_3_0; |
| 51 | case ACPITAB_TCPA: |
| 52 | /* This version and the rest are open-coded */ |
| 53 | return 2; |
| 54 | case ACPITAB_TPM2: |
| 55 | return 4; |
| 56 | case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */ |
| 57 | return 2; |
| 58 | case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */ |
| 59 | return 1; /* TODO Should probably be upgraded to 2 */ |
| 60 | case ACPITAB_DMAR: |
| 61 | return 1; |
| 62 | case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */ |
| 63 | return 1; |
| 64 | case ACPITAB_SPMI: /* IMPI 2.0 */ |
| 65 | return 5; |
| 66 | case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */ |
| 67 | return 1; |
| 68 | case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */ |
| 69 | return 1; |
| 70 | case ACPITAB_IVRS: |
| 71 | return IVRS_FORMAT_FIXED; |
| 72 | case ACPITAB_DBG2: |
| 73 | return 0; |
| 74 | case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */ |
| 75 | return 1; |
| 76 | case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */ |
| 77 | return 1; |
| 78 | case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */ |
| 79 | return 1; |
| 80 | case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */ |
| 81 | return 2; |
| 82 | case ACPITAB_HEST: |
| 83 | return 1; |
| 84 | case ACPITAB_NHLT: |
| 85 | return 5; |
| 86 | case ACPITAB_BERT: |
| 87 | return 1; |
| 88 | case ACPITAB_SPCR: |
| 89 | return 2; |
| 90 | default: |
| 91 | return -EINVAL; |
| 92 | } |
| 93 | } |