[1/2] acpi: rgrt: add test for ACPI RGRT table( mantis 2056)

diff --git a/src/Makefile.am b/src/Makefile.am
index 3bb35e5c..334b287f 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -126,6 +126,7 @@  fwts_SOURCES = main.c 				\
 	acpi/pmtt/pmtt.c 			\
 	acpi/pptt/pptt.c 			\
 	acpi/rasf/rasf.c			\
+	acpi/rgrt/rgrt.c			\
 	acpi/rsdp/rsdp.c			\
 	sbbr/rsdp/rsdp.c			\
 	acpi/rsdt/rsdt.c			\
diff --git a/src/acpi/rgrt/rgrt.c b/src/acpi/rgrt/rgrt.c
new file mode 100644
index 00000000..b0e35423
--- /dev/null
+++ b/src/acpi/rgrt/rgrt.c
@@ -0,0 +1,87 @@ 
+/*
+ * Copyright (C) 2022 Canonical
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+#include "fwts.h"
+
+#if defined(FWTS_HAS_ACPI)
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <string.h>
+
+static fwts_acpi_table_info *table;
+acpi_table_init(RGRT, &table)
+
+static void rgrt_data_hexdump(fwts_framework *fw, uint8_t *data, size_t size)
+{
+	size_t i;
+
+	for (i = 0; i < size; i += 16) {
+		char buffer[128];
+		size_t left = size - i;
+
+		fwts_dump_raw_data(buffer, sizeof(buffer), data + i, i, left > 16 ? 16 : left);
+		fwts_log_info_verbatim(fw,  "    %s", buffer + 2);
+	}
+}
+
+static int rgrt_test1(fwts_framework *fw)
+{
+	bool passed = true;
+	fwts_acpi_table_rgrt *rgrt = (fwts_acpi_table_rgrt *)table->data;
+
+	if (!fwts_acpi_table_length(fw, "RGRT", table->length, sizeof(fwts_acpi_table_rgrt))) {
+		passed = false;
+		goto done;
+	}
+
+	fwts_log_info_verbatim(fw, "RGRT Regulatory Graphics Resource Table:");
+	fwts_log_info_simp_int(fw, "  Version:        ", rgrt->version);
+	fwts_log_info_simp_int(fw, "  Image Type:     ", rgrt->image_type);
+	fwts_log_info_simp_int(fw, "  Reserved:       ", rgrt->reserved);
+	fwts_log_info_verbatim(fw, "  Image:");
+	rgrt_data_hexdump(fw, rgrt->image, table->length - sizeof(fwts_acpi_table_rgrt));
+
+	fwts_acpi_fixed_value(fw, LOG_LEVEL_MEDIUM, "RGRT", "Version", rgrt->version, 1, &passed);
+	fwts_acpi_fixed_value(fw, LOG_LEVEL_MEDIUM, "RGRT", "Image Type", rgrt->image_type, 1, &passed);
+	fwts_acpi_reserved_zero("RGRT", "Reserved", rgrt->reserved, &passed);
+
+	fwts_log_nl(fw);
+	if (passed)
+		fwts_passed(fw, "No issues found in RGRT table.");
+
+done:
+	return FWTS_OK;
+}
+
+static fwts_framework_minor_test rgrt_tests[] = {
+	{ rgrt_test1, "Validate RGRT table." },
+	{ NULL, NULL }
+};
+
+static fwts_framework_ops rgrt_ops = {
+	.description = "RGRT Regulatory Graphics Resource Table test",
+	.init        = RGRT_init,
+	.minor_tests = rgrt_tests
+};
+
+FWTS_REGISTER("rgrt", &rgrt_ops, FWTS_TEST_ANYTIME, FWTS_FLAG_BATCH | FWTS_FLAG_ACPI)
+
+#endif
diff --git a/src/lib/include/fwts_acpi.h b/src/lib/include/fwts_acpi.h
index a599710d..c1fd49f1 100644
--- a/src/lib/include/fwts_acpi.h
+++ b/src/lib/include/fwts_acpi.h
@@ -2286,4 +2286,16 @@  typedef struct {
 	fwts_acpi_table_svkl_key_structure key_struct[0];
 } __attribute__ ((packed)) fwts_acpi_table_svkl;
 
+/*
+ * ACPI RGRT (Regulatory Graphics Resource Table)
+ * https://microsoft.github.io/mu/dyn/mu_plus/MsCorePkg/AcpiRGRT/feature_acpi_rgrt/
+ */
+typedef struct {
+	fwts_acpi_table_header  header;
+	uint16_t	version;
+	uint8_t		image_type;
+	uint8_t		reserved;
+	uint8_t		image[0];
+} __attribute__ ((packed)) fwts_acpi_table_rgrt;
+
 #endif