efi_selftest: unit test for EFI Conformance Profile Table

Add a new unit test to test the integrity of the
EFI Conformance Profile Table.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>

diff --git a/lib/efi_selftest/Makefile b/lib/efi_selftest/Makefile
index 33536c9ec0211280a68dc7afb29e1a47ad23f6d9..daac6c3968206f0fc8727785f45675f55bbcf4ff 100644 (file)
--- a/lib/efi_selftest/Makefile
+++ b/lib/efi_selftest/Makefile
@@ -49,6 +49,7 @@ efi_selftest_variables.o \
 efi_selftest_variables_runtime.o \
 efi_selftest_watchdog.o
 
+obj-$(CONFIG_EFI_ECPT) += efi_selftest_ecpt.o
 obj-$(CONFIG_NET) += efi_selftest_snp.o
 
 obj-$(CONFIG_EFI_DEVICE_PATH_TO_TEXT) += efi_selftest_devicepath.o

diff --git a/lib/efi_selftest/efi_selftest_ecpt.c b/lib/efi_selftest/efi_selftest_ecpt.c
new file mode 100644 (file)
index 0000000..e8cc135
--- /dev/null
+++ b/lib/efi_selftest/efi_selftest_ecpt.c
@@ -0,0 +1,76 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * efi_selftest_fdt
+ *
+ * Copyright (c) 2022 Heinrich Schuchardt <xypron.glpk@gmx.de>
+ *
+ * Check the EFI_CONFORMANCE_PROFILE_TABLE
+ */
+
+#include <efi_selftest.h>
+
+static const efi_guid_t guid_ecpt = EFI_CONFORMANCE_PROFILES_TABLE_GUID;
+static const efi_guid_t guid_ebbr_2_0 = EFI_CONFORMANCE_PROFILE_EBBR_2_0_GUID;
+
+/*
+ * ecpt_find_guid() - find GUID in EFI Conformance Profile Table
+ *
+ * @ecpt:      EFI Conformance Profile Table
+ * @guid:      GUID to find
+ * Return:     EFI_ST_SUCCESS for success
+ */
+static int ecpt_find_guid(struct efi_conformance_profiles_table *ecpt,
+                         const efi_guid_t *guid) {
+       int i;
+
+       for (i = 0; i < ecpt->number_of_profiles; ++i) {
+               if (!memcmp(&ecpt->conformance_profiles[i], guid, 16))
+                       return EFI_ST_SUCCESS;
+       }
+       efi_st_error("GUID %pU not found\n", guid);
+       return EFI_ST_FAILURE;
+}
+
+/*
+ * Execute unit test.
+ *
+ * Return:     EFI_ST_SUCCESS for success
+ */
+static int execute(void)
+{
+       struct efi_conformance_profiles_table *ecpt;
+       int expected_entries = 0;
+
+       ecpt = efi_st_get_config_table(&guid_ecpt);
+
+       if (!ecpt) {
+               efi_st_error("Missing EFI Conformance Profile Table\n");
+               return EFI_ST_FAILURE;
+       }
+
+       if (ecpt->version != EFI_CONFORMANCE_PROFILES_TABLE_VERSION) {
+               efi_st_error("Wrong table version\n");
+               return EFI_ST_FAILURE;
+       }
+
+       if (CONFIG_IS_ENABLED(EFI_EBBR_2_0_CONFORMANCE)) {
+               ++expected_entries;
+               if (ecpt_find_guid(ecpt, &guid_ebbr_2_0))
+                       return EFI_ST_FAILURE;
+       }
+
+       if (ecpt->number_of_profiles != expected_entries) {
+               efi_st_error("Expected %d entries, found %d\n",
+                            expected_entries, ecpt->number_of_profiles);
+               return EFI_ST_FAILURE;
+       }
+
+       return EFI_ST_SUCCESS;
+}
+
+
+EFI_UNIT_TEST(ecpt) = {
+       .name = "conformance profile table",
+       .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
+       .execute = execute,
+};