acpi: Add a central location for table version numbers
Each ACPI table has its own version number. Add the version numbers in a
single function so we can keep them consistent and easily see what
versions are supported.
Start a new acpi_table file in a generic directory to house this function.
We can move things over to this file from x86 as needed.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/lib/Makefile b/lib/Makefile
index 32bf3f3..5f88d92 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -58,6 +58,7 @@
obj-$(CONFIG_TPM_V2) += tpm-v2.o
endif
+obj-$(CONFIG_$(SPL_)ACPIGEN) += acpi/
obj-$(CONFIG_$(SPL_)RSA) += rsa/
obj-$(CONFIG_SHA1) += sha1.o
obj-$(CONFIG_SHA256) += sha256.o
diff --git a/lib/acpi/Makefile b/lib/acpi/Makefile
new file mode 100644
index 0000000..660491e
--- /dev/null
+++ b/lib/acpi/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+
+obj-y += acpi_table.o
diff --git a/lib/acpi/acpi_table.c b/lib/acpi/acpi_table.c
new file mode 100644
index 0000000..3268430
--- /dev/null
+++ b/lib/acpi/acpi_table.c
@@ -0,0 +1,62 @@
+// 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>
+
+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;
+ }
+}