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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * efi_selftest_variables_runtime
- *
- * Copyright (c) 2019 Heinrich Schuchardt <xypron.glpk@gmx.de>
- *
- * This unit test checks the runtime services for variables after
- * ExitBootServices():
- * GetVariable, GetNextVariableName, SetVariable, QueryVariableInfo.
- */
- #include <efi_selftest.h>
- #define EFI_ST_MAX_DATA_SIZE 16
- #define EFI_ST_MAX_VARNAME_SIZE 40
- static struct efi_boot_services *boottime;
- static struct efi_runtime_services *runtime;
- static const efi_guid_t guid_vendor0 = EFI_GLOBAL_VARIABLE_GUID;
- /*
- * Setup unit test.
- *
- * @handle handle of the loaded image
- * @systable system table
- */
- static int setup(const efi_handle_t img_handle,
- const struct efi_system_table *systable)
- {
- boottime = systable->boottime;
- runtime = systable->runtime;
- return EFI_ST_SUCCESS;
- }
- /**
- * execute() - execute unit test
- *
- * As runtime support is not implmented expect EFI_UNSUPPORTED to be returned.
- */
- static int execute(void)
- {
- efi_status_t ret;
- efi_uintn_t len;
- u32 attr;
- u8 v[16] = {0x5d, 0xd1, 0x5e, 0x51, 0x5a, 0x05, 0xc7, 0x0c,
- 0x35, 0x4a, 0xae, 0x87, 0xa5, 0xdf, 0x0f, 0x65,};
- u8 data[EFI_ST_MAX_DATA_SIZE];
- u16 varname[EFI_ST_MAX_VARNAME_SIZE];
- efi_guid_t guid;
- u64 max_storage, rem_storage, max_size;
- ret = runtime->query_variable_info(EFI_VARIABLE_BOOTSERVICE_ACCESS,
- &max_storage, &rem_storage,
- &max_size);
- if (ret != EFI_UNSUPPORTED) {
- efi_st_error("QueryVariableInfo failed\n");
- return EFI_ST_FAILURE;
- }
- ret = runtime->set_variable(L"efi_st_var0", &guid_vendor0,
- EFI_VARIABLE_BOOTSERVICE_ACCESS |
- EFI_VARIABLE_RUNTIME_ACCESS,
- 3, v + 4);
- if (ret != EFI_UNSUPPORTED) {
- efi_st_error("SetVariable failed\n");
- return EFI_ST_FAILURE;
- }
- len = EFI_ST_MAX_DATA_SIZE;
- ret = runtime->get_variable(L"PlatformLangCodes", &guid_vendor0,
- &attr, &len, data);
- if (ret != EFI_SUCCESS) {
- efi_st_error("GetVariable failed\n");
- return EFI_ST_FAILURE;
- }
- memset(&guid, 0, 16);
- *varname = 0;
- len = 2 * EFI_ST_MAX_VARNAME_SIZE;
- ret = runtime->get_next_variable_name(&len, varname, &guid);
- if (ret != EFI_SUCCESS) {
- efi_st_error("GetNextVariableName failed\n");
- return EFI_ST_FAILURE;
- }
- return EFI_ST_SUCCESS;
- }
- EFI_UNIT_TEST(variables_run) = {
- .name = "variables at runtime",
- .phase = EFI_SETUP_BEFORE_BOOTTIME_EXIT,
- .setup = setup,
- .execute = execute,
- };
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