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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);
/*
* Notification function, increments the notification count if parameter
* 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;
}
/*
* Check CRC32 of a table.
*/
static int check_table(const void *table)
{
efi_status_t ret;
u32 crc32, res;
/* Casting from constant to not constant */
struct efi_table_hdr *hdr = (struct efi_table_hdr *)table;
crc32 = hdr->crc32;
/*
* Setting the CRC32 of the 'const' table to zero is easier than
* copying
*/
hdr->crc32 = 0;
ret = boottime->calculate_crc32(table, hdr->headersize, &res);
/* Reset table CRC32 so it stays constant */
hdr->crc32 = crc32;
if (ret != EFI_ST_SUCCESS) {
efi_st_error("CalculateCrc32 failed\n");
return EFI_ST_FAILURE;
}
if (res != crc32) {
efi_st_error("Incorrect CRC32\n");
return EFI_ST_FAILURE;
}
return EFI_ST_SUCCESS;
}
/*
* 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\n");
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\n");
return EFI_ST_FAILURE;
}
if (counter) {
efi_st_error("Notification function was called.\n");
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\n");
return EFI_ST_FAILURE;
}
if (counter != 1) {
efi_st_error("Notification function was not called.\n");
return EFI_ST_FAILURE;
}
if (table_count != sys_table->nr_tables) {
efi_st_error("Incorrect table count %u, expected %u\n",
(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\n");
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\n");
return EFI_ST_FAILURE;
}
if (++table_count != sys_table->nr_tables) {
efi_st_error("Incorrect table count %u, expected %u\n",
(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 (!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\n");
return EFI_ST_FAILURE;
}
if (table != &tables[0]) {
efi_st_error("Incorrect table address\n");
return EFI_ST_FAILURE;
}
if (check_table(sys_table) != EFI_ST_SUCCESS) {
efi_st_error("Checking system table\n");
return EFI_ST_FAILURE;
}
/* Update table */
ret = boottime->install_configuration_table(&table_guid,
(void *)&tables[1]);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to update table\n");
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\n");
return EFI_ST_FAILURE;
}
if (table_count != sys_table->nr_tables) {
efi_st_error("Incorrect table count %u, expected %u\n",
(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 (!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\n");
return EFI_ST_FAILURE;
}
if (tabcnt > 1) {
efi_st_error("Duplicate table GUID\n");
return EFI_ST_FAILURE;
}
if (table != &tables[1]) {
efi_st_error("Incorrect table address\n");
return EFI_ST_FAILURE;
}
if (check_table(sys_table) != EFI_ST_SUCCESS) {
efi_st_error("Checking system table\n");
return EFI_ST_FAILURE;
}
/* Delete table */
ret = boottime->install_configuration_table(&table_guid, NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to delete table\n");
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\n");
return EFI_ST_FAILURE;
}
if (--table_count != sys_table->nr_tables) {
efi_st_error("Incorrect table count %u, expected %u\n",
(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 (!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\n");
return EFI_ST_FAILURE;
}
ret = boottime->close_event(event);
if (ret != EFI_SUCCESS) {
efi_st_error("Failed to close event\n");
return EFI_ST_FAILURE;
}
if (check_table(sys_table) != EFI_ST_SUCCESS) {
efi_st_error("Checking system table\n");
return EFI_ST_FAILURE;
}
return EFI_ST_SUCCESS;
}
EFI_UNIT_TEST(configtables) = {
.name = "configuration tables",
.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
.setup = setup,
.execute = execute,
};
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