1 // SPDX-License-Identifier: GPL-2.0+
3 * Generic code used to generate ACPI tables
5 * Copyright 2019 Google LLC
12 #include <acpi/acpi_table.h>
15 int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
17 struct acpi_table_header *header = &dmar->header;
22 ret = uclass_first_device(UCLASS_CPU, &cpu);
24 return log_msg_ret("cpu", ret);
25 ret = cpu_get_info(cpu, &info);
27 return log_msg_ret("info", ret);
28 memset((void *)dmar, 0, sizeof(struct acpi_dmar));
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);
35 dmar->host_address_width = info.address_width - 1;
41 int acpi_get_table_revision(enum acpi_tables table)
45 return ACPI_FADT_REV_ACPI_3_0;
47 return ACPI_MADT_REV_ACPI_3_0;
49 return ACPI_MCFG_REV_ACPI_3_0;
51 /* This version and the rest are open-coded */
55 case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */
57 case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */
58 return 1; /* TODO Should probably be upgraded to 2 */
61 case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */
63 case ACPITAB_SPMI: /* IMPI 2.0 */
65 case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */
67 case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */
70 return IVRS_FORMAT_FIXED;
73 case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */
75 case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */
77 case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */
79 case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */
94 void acpi_fill_header(struct acpi_table_header *header, char *signature)
96 memcpy(header->signature, signature, 4);
97 memcpy(header->oem_id, OEM_ID, 6);
98 memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
99 header->oem_revision = U_BOOT_BUILD_DATE;
100 memcpy(header->aslc_id, ASLC_ID, 4);
103 void acpi_align(struct acpi_ctx *ctx)
105 ctx->current = (void *)ALIGN((ulong)ctx->current, 16);
108 void acpi_align64(struct acpi_ctx *ctx)
110 ctx->current = (void *)ALIGN((ulong)ctx->current, 64);
113 void acpi_inc(struct acpi_ctx *ctx, uint amount)
115 ctx->current += amount;
118 void acpi_inc_align(struct acpi_ctx *ctx, uint amount)
120 ctx->current += amount;