[PATCH v7 5/6] efi: selftest: add selftest for EFI_DEBUG_SUPPORT

[Ying-Chun Liu (PaulLiu)]

From: "Ying-Chun Liu (PaulLiu)" <paul.liu at linaro.org>

Add selftest to check the installed configuration table that has
the correct GUID.

Signed-off-by: Ying-Chun Liu (PaulLiu) <paul.liu at linaro.org>
Cc: Heinrich Schuchardt <xypron.glpk at gmx.de>
Cc: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
V7: add selftest for EFI_DEBUG_SUPPORT
---
 lib/efi_selftest/Makefile                     |  2 +
 lib/efi_selftest/efi_selftest_debug_support.c | 58 +++++++++++++++++++
 2 files changed, 60 insertions(+)
 create mode 100644 lib/efi_selftest/efi_selftest_debug_support.c

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index d78bf7d6191..842433f68aa 100644
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -78,6 +78,8 @@ endif
 
 obj-$(CONFIG_EFI_ESRT) += efi_selftest_esrt.o
 
+obj-$(CONFIG_EFI_DEBUG_SUPPORT) += efi_selftest_debug_support.o
+
 targets += \
 efi_miniapp_file_image_exception.h \
 efi_miniapp_file_image_exit.h \
diff --git a/lib/efi_selftest/efi_selftest_debug_support.c b/lib/efi_selftest/efi_selftest_debug_support.c
new file mode 100644
index 00000000000..9cfa44c05a2
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_debug_support.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * efi_selftest_debug_support
+ *
+ * Copyright (c) 2025 Ying-Chun Liu, Linaro Ltd. <paul.liu at linaro.org>
+ *
+ * Test the EFI_DEBUG_SUPPORT
+ */
+
+#include <efi_loader.h>
+#include <efi_selftest.h>
+
+static const struct efi_system_table *local_systable;
+
+/**
+ * efi_st_debug_support_setup() - setup test
+ *
+ * @handle:	handle of the loaded image
+ * @systable:	system table
+ * Return:	status code
+ */
+static int efi_st_debug_support_setup(const efi_handle_t img_handle,
+				      const struct efi_system_table *systable)
+{
+	local_systable = systable;
+
+	return EFI_ST_SUCCESS;
+}
+
+/**
+ * efi_st_debug_support_execute() - execute test
+ *
+ * Test EFI_DEBUG_SUPPORT tables.
+ *
+ * Return:	status code
+ */
+static int efi_st_debug_support_execute(void)
+{
+	struct efi_debug_image_info_table_header *efi_st_debug_info_table_header = NULL;
+	efi_guid_t efi_debug_image_info_table_guid = EFI_DEBUG_IMAGE_INFO_TABLE_GUID;
+
+	/* find EFI_DEBUG_IMAGE_INFO_TABLE */
+	for (int idx = 0; idx < local_systable->nr_tables; idx++)
+		if (!guidcmp(&efi_debug_image_info_table_guid, &local_systable->tables[idx].guid))
+			efi_st_debug_info_table_header = local_systable->tables[idx].table;
+
+	if (!efi_st_debug_info_table_header)
+		return EFI_ST_FAILURE;
+
+	return EFI_ST_SUCCESS;
+}
+
+EFI_UNIT_TEST(debug_support) = {
+	.name = "debug_support",
+	.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+	.execute = efi_st_debug_support_execute,
+	.setup = efi_st_debug_support_setup,
+};
-- 
2.39.5