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b9bb2627bb
Enhance the debug support unit test. Acked-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
107 lines
2.8 KiB
C
107 lines
2.8 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* efi_selftest_debug_support
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*
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* Copyright (c) 2025 Ying-Chun Liu, Linaro Ltd. <paul.liu@linaro.org>
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*
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* Test the EFI_DEBUG_SUPPORT
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*/
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#include <efi_loader.h>
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#include <efi_selftest.h>
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#include <linux/sizes.h>
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/**
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* efi_st_debug_support_execute() - execute test
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*
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* Test EFI_DEBUG_SUPPORT tables.
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*
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* Return: status code
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*/
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static int efi_st_debug_support_execute(void)
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{
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struct efi_debug_image_info_table_header *efi_st_debug_info_table_header = NULL;
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efi_guid_t efi_debug_image_info_table_guid = EFI_DEBUG_IMAGE_INFO_TABLE_GUID;
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struct efi_mem_desc *memory_map;
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efi_uintn_t map_size = 0;
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efi_uintn_t map_key;
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efi_uintn_t desc_size;
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u32 desc_version;
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efi_status_t ret;
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/* get EFI_DEBUG_IMAGE_INFO_TABLE */
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efi_st_debug_info_table_header = efi_st_get_config_table(&efi_debug_image_info_table_guid);
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if (!efi_st_debug_info_table_header) {
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efi_st_error("Missing EFI_DEBUG_IMAGE_INFO_TABLE\n");
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return EFI_ST_FAILURE;
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}
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/* Load memory map */
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ret = st_boottime->get_memory_map(&map_size, NULL, &map_key, &desc_size,
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&desc_version);
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if (ret != EFI_BUFFER_TOO_SMALL) {
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efi_st_error
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("GetMemoryMap did not return EFI_BUFFER_TOO_SMALL\n");
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return EFI_ST_FAILURE;
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}
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/* Allocate extra space for newly allocated memory */
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map_size += sizeof(struct efi_mem_desc);
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ret = st_boottime->allocate_pool(EFI_BOOT_SERVICES_DATA, map_size,
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(void **)&memory_map);
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if (ret != EFI_SUCCESS) {
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efi_st_error("AllocatePool failed\n");
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return EFI_ST_FAILURE;
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}
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ret = st_boottime->get_memory_map(&map_size, memory_map, &map_key,
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&desc_size, &desc_version);
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if (ret != EFI_SUCCESS) {
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efi_st_error("GetMemoryMap failed\n");
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return EFI_ST_FAILURE;
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}
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/* Find the system table pointer */
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for (efi_uintn_t i = 0; map_size; ++i, map_size -= desc_size) {
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struct efi_mem_desc *entry = &memory_map[i];
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u64 end;
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if (entry->type != EFI_RUNTIME_SERVICES_DATA)
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continue;
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end = entry->physical_start +
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(entry->num_pages << EFI_PAGE_SHIFT);
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for (u64 pos = ALIGN(entry->physical_start, SZ_4M);
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pos <= end; pos += SZ_4M) {
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struct efi_system_table_pointer *systab_pointer =
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(void *)(uintptr_t)pos;
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/* check for overflow */
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if (pos < entry->physical_start)
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break;
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if (systab_pointer->signature ==
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EFI_SYSTEM_TABLE_SIGNATURE) {
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if (systab_pointer->efi_system_table_base !=
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(uintptr_t)st_systable) {
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efi_st_error("Wrong system table address\n");
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ret = EFI_ST_FAILURE;
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goto out;
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}
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ret = EFI_ST_SUCCESS;
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goto out;
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}
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}
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}
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efi_st_error("System table pointer not found\n");
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ret = EFI_ST_FAILURE;
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out:
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st_boottime->free_pool(memory_map);
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return ret;
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}
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EFI_UNIT_TEST(debug_support) = {
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.name = "debug_support",
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.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
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.execute = efi_st_debug_support_execute,
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};
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