1 files changed, 93 insertions, 0 deletions
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
new file mode 100644
index 0000000000..4633dcb948
--- /dev/null
+++ b/lib/acpi/acpi_table.c
@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Generic code used to generate ACPI tables
+ *
+ * Copyright 2019 Google LLC
+ */
+
+#include <common.h>
+#include <acpi/acpi_table.h>
+#include <dm.h>
+#include <cpu.h>
+
+/* Temporary change to ensure bisectability */
+#ifndef CONFIG_SANDBOX
+int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags)
+{
+	struct acpi_table_header *header = &dmar->header;
+	struct cpu_info info;
+	struct udevice *cpu;
+	int ret;
+
+	ret = uclass_first_device(UCLASS_CPU, &cpu);
+	if (ret)
+		return log_msg_ret("cpu", ret);
+	ret = cpu_get_info(cpu, &info);
+	if (ret)
+		return log_msg_ret("info", ret);
+	memset((void *)dmar, 0, sizeof(struct acpi_dmar));
+
+	/* Fill out header fields. */
+	acpi_fill_header(&dmar->header, "DMAR");
+	header->length = sizeof(struct acpi_dmar);
+	header->revision = acpi_get_table_revision(ACPITAB_DMAR);
+
+	dmar->host_address_width = info.address_width - 1;
+	dmar->flags = flags;
+
+	return 0;
+}
+#endif
+
+int acpi_get_table_revision(enum acpi_tables table)
+{
+	switch (table) {
+	case ACPITAB_FADT:
+		return ACPI_FADT_REV_ACPI_3_0;
+	case ACPITAB_MADT:
+		return ACPI_MADT_REV_ACPI_3_0;
+	case ACPITAB_MCFG:
+		return ACPI_MCFG_REV_ACPI_3_0;
+	case ACPITAB_TCPA:
+		/* This version and the rest are open-coded */
+		return 2;
+	case ACPITAB_TPM2:
+		return 4;
+	case ACPITAB_SSDT: /* ACPI 3.0 upto 6.3: 2 */
+		return 2;
+	case ACPITAB_SRAT: /* ACPI 2.0: 1, ACPI 3.0: 2, ACPI 4.0 to 6.3: 3 */
+		return 1; /* TODO Should probably be upgraded to 2 */
+	case ACPITAB_DMAR:
+		return 1;
+	case ACPITAB_SLIT: /* ACPI 2.0 upto 6.3: 1 */
+		return 1;
+	case ACPITAB_SPMI: /* IMPI 2.0 */
+		return 5;
+	case ACPITAB_HPET: /* Currently 1. Table added in ACPI 2.0 */
+		return 1;
+	case ACPITAB_VFCT: /* ACPI 2.0/3.0/4.0: 1 */
+		return 1;
+	case ACPITAB_IVRS:
+		return IVRS_FORMAT_FIXED;
+	case ACPITAB_DBG2:
+		return 0;
+	case ACPITAB_FACS: /* ACPI 2.0/3.0: 1, ACPI 4.0 to 6.3: 2 */
+		return 1;
+	case ACPITAB_RSDT: /* ACPI 1.0 upto 6.3: 1 */
+		return 1;
+	case ACPITAB_XSDT: /* ACPI 2.0 upto 6.3: 1 */
+		return 1;
+	case ACPITAB_RSDP: /* ACPI 2.0 upto 6.3: 2 */
+		return 2;
+	case ACPITAB_HEST:
+		return 1;
+	case ACPITAB_NHLT:
+		return 5;
+	case ACPITAB_BERT:
+		return 1;
+	case ACPITAB_SPCR:
+		return 2;
+	default:
+		return -EINVAL;
+	}
+}