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lib/efi_selftest/efi_selftest_config_table.c
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// SPDX-License-Identifier: GPL-2.0+ /* * efi_selftest_config_tables * * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de> * * This test checks the following service: * InstallConfigurationTable. */ #include <efi_selftest.h> static const struct efi_system_table *sys_table; static struct efi_boot_services *boottime; static efi_guid_t table_guid = EFI_GUID(0xff1c3f9e, 0x795b, 0x1529, 0xf1, 0x55, 0x17, 0x2e, 0x51, 0x6b, 0x49, 0x75); /* |
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* Notification function, increments the notification count if parameter |
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* context is provided. * * @event notified event * @context pointer to the notification count */ static void EFIAPI notify(struct efi_event *event, void *context) { unsigned int *count = context; if (count) ++*count; } /* |
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* Check CRC32 of a table. |
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*/ static int check_table(const void *table) { efi_status_t ret; u32 crc32, res; |
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/* Casting from constant to not constant */ |
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struct efi_table_hdr *hdr = (struct efi_table_hdr *)table; crc32 = hdr->crc32; /* |
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* Setting the CRC32 of the 'const' table to zero is easier than |
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* copying */ hdr->crc32 = 0; ret = boottime->calculate_crc32(table, hdr->headersize, &res); |
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/* Reset table CRC32 so it stays constant */ |
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hdr->crc32 = crc32; if (ret != EFI_ST_SUCCESS) { efi_st_error("CalculateCrc32 failed "); return EFI_ST_FAILURE; } if (res != crc32) { efi_st_error("Incorrect CRC32 "); return EFI_ST_FAILURE; } return EFI_ST_SUCCESS; } /* |
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* Setup unit test. * * @handle: handle of the loaded image * @systable: system table * @return: EFI_ST_SUCCESS for success */ static int setup(const efi_handle_t handle, const struct efi_system_table *systable) { sys_table = systable; boottime = systable->boottime; return EFI_ST_SUCCESS; } /* * Execute unit test. * * A table is installed, updated, removed. The table entry and the * triggering of events is checked. * * @return: EFI_ST_SUCCESS for success */ static int execute(void) { efi_status_t ret; unsigned int counter = 0; struct efi_event *event; void *table; const unsigned int tables[2]; efi_uintn_t i; efi_uintn_t tabcnt; efi_uintn_t table_count = sys_table->nr_tables; ret = boottime->create_event_ex(0, TPL_NOTIFY, notify, (void *)&counter, &table_guid, &event); if (ret != EFI_SUCCESS) { efi_st_error("Failed to create event "); return EFI_ST_FAILURE; } /* Try to delete non-existent table */ ret = boottime->install_configuration_table(&table_guid, NULL); if (ret != EFI_NOT_FOUND) { efi_st_error("Failed to detect missing table "); return EFI_ST_FAILURE; } if (counter) { efi_st_error("Notification function was called. "); return EFI_ST_FAILURE; } /* Check if the event was signaled */ ret = boottime->check_event(event); if (ret == EFI_SUCCESS) { efi_st_error("Event was signaled on EFI_NOT_FOUND "); return EFI_ST_FAILURE; } if (counter != 1) { efi_st_error("Notification function was not called. "); return EFI_ST_FAILURE; } if (table_count != sys_table->nr_tables) { efi_st_error("Incorrect table count %u, expected %u ", (unsigned int)sys_table->nr_tables, (unsigned int)table_count); return EFI_ST_FAILURE; } /* Install table */ ret = boottime->install_configuration_table(&table_guid, (void *)&tables[0]); if (ret != EFI_SUCCESS) { efi_st_error("Failed to install table "); return EFI_ST_FAILURE; } /* Check signaled state */ ret = boottime->check_event(event); if (ret != EFI_SUCCESS) { efi_st_error("Event was not signaled on insert "); return EFI_ST_FAILURE; } if (++table_count != sys_table->nr_tables) { efi_st_error("Incorrect table count %u, expected %u ", (unsigned int)sys_table->nr_tables, (unsigned int)table_count); return EFI_ST_FAILURE; } table = NULL; for (i = 0; i < sys_table->nr_tables; ++i) { if (!efi_st_memcmp(&sys_table->tables[i].guid, &table_guid, sizeof(efi_guid_t))) table = sys_table->tables[i].table; } if (!table) { efi_st_error("Installed table not found "); return EFI_ST_FAILURE; } if (table != &tables[0]) { efi_st_error("Incorrect table address "); return EFI_ST_FAILURE; } |
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if (check_table(sys_table) != EFI_ST_SUCCESS) { efi_st_error("Checking system table "); return EFI_ST_FAILURE; } |
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/* Update table */ ret = boottime->install_configuration_table(&table_guid, (void *)&tables[1]); if (ret != EFI_SUCCESS) { efi_st_error("Failed to update table "); return EFI_ST_FAILURE; } /* Check signaled state */ ret = boottime->check_event(event); if (ret != EFI_SUCCESS) { efi_st_error("Event was not signaled on update "); return EFI_ST_FAILURE; } if (table_count != sys_table->nr_tables) { efi_st_error("Incorrect table count %u, expected %u ", (unsigned int)sys_table->nr_tables, (unsigned int)table_count); return EFI_ST_FAILURE; } table = NULL; tabcnt = 0; for (i = 0; i < sys_table->nr_tables; ++i) { if (!efi_st_memcmp(&sys_table->tables[i].guid, &table_guid, sizeof(efi_guid_t))) { table = sys_table->tables[i].table; ++tabcnt; } } if (!table) { efi_st_error("Installed table not found "); return EFI_ST_FAILURE; } if (tabcnt > 1) { |
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efi_st_error("Duplicate table GUID "); |
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return EFI_ST_FAILURE; } if (table != &tables[1]) { efi_st_error("Incorrect table address "); return EFI_ST_FAILURE; } |
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if (check_table(sys_table) != EFI_ST_SUCCESS) { efi_st_error("Checking system table "); return EFI_ST_FAILURE; } |
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/* Delete table */ ret = boottime->install_configuration_table(&table_guid, NULL); if (ret != EFI_SUCCESS) { efi_st_error("Failed to delete table "); return EFI_ST_FAILURE; } /* Check signaled state */ ret = boottime->check_event(event); if (ret != EFI_SUCCESS) { efi_st_error("Event was not signaled on delete "); return EFI_ST_FAILURE; } if (--table_count != sys_table->nr_tables) { efi_st_error("Incorrect table count %u, expected %u ", (unsigned int)sys_table->nr_tables, (unsigned int)table_count); return EFI_ST_FAILURE; } table = NULL; for (i = 0; i < sys_table->nr_tables; ++i) { if (!efi_st_memcmp(&sys_table->tables[i].guid, &table_guid, sizeof(efi_guid_t))) { table = sys_table->tables[i].table; } } if (table) { efi_st_error("Wrong table deleted "); return EFI_ST_FAILURE; } ret = boottime->close_event(event); if (ret != EFI_SUCCESS) { efi_st_error("Failed to close event "); return EFI_ST_FAILURE; } |
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if (check_table(sys_table) != EFI_ST_SUCCESS) { efi_st_error("Checking system table "); return EFI_ST_FAILURE; } |
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return EFI_ST_SUCCESS; } EFI_UNIT_TEST(configtables) = { .name = "configuration tables", .phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT, .setup = setup, .execute = execute, }; |