92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* efi_selftest_miniapp_exit
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*
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* Copyright (c) 2018 Heinrich Schuchardt
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*
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* This EFI application is run by the StartImage selftest.
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* It uses the Exit boot service to return.
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*/
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#include <common.h>
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#include <efi_selftest.h>
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static efi_guid_t loaded_image_protocol_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
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/**
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* check_loaded_image_protocol() - check image_base/image_size
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*
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* Try to open the loaded image protocol. Check that this function is located
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* between image_base and image_base + image_size.
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*
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* @image_handle: handle of the loaded image
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* @systable: system table
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* @return: status code
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*/
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static efi_status_t EFIAPI check_loaded_image_protocol
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(efi_handle_t image_handle, struct efi_system_table *systable)
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{
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struct efi_simple_text_output_protocol *cout = systable->con_out;
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struct efi_boot_services *boottime = systable->boottime;
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struct efi_loaded_image *loaded_image_protocol;
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efi_status_t ret;
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/*
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* Open the loaded image protocol.
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*/
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ret = boottime->open_protocol
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(image_handle, &loaded_image_protocol_guid,
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(void **)&loaded_image_protocol, NULL,
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NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
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if (ret != EFI_SUCCESS) {
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cout->output_string(cout,
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L"Could not open loaded image protocol");
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return ret;
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}
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if ((void *)check_loaded_image_protocol <
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loaded_image_protocol->image_base ||
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(void *)check_loaded_image_protocol >=
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loaded_image_protocol->image_base +
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loaded_image_protocol->image_size) {
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cout->output_string(cout,
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L"Incorrect image_base or image_size\n");
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return EFI_NOT_FOUND;
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}
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return EFI_SUCCESS;
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}
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/**
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* Entry point of the EFI application.
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*
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* @handle: handle of the loaded image
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* @systable: system table
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* @return: status code
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*/
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efi_status_t EFIAPI efi_main(efi_handle_t handle,
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struct efi_system_table *systable)
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{
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struct efi_simple_text_output_protocol *con_out = systable->con_out;
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efi_status_t ret;
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u16 text[] = EFI_ST_SUCCESS_STR;
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con_out->output_string(con_out, L"EFI application calling Exit\n");
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if (check_loaded_image_protocol(handle, systable) != EFI_SUCCESS) {
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con_out->output_string(con_out,
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L"Loaded image protocol missing\n");
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ret = EFI_NOT_FOUND;
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goto out;
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}
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/* This return value is expected by the calling test */
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ret = EFI_UNSUPPORTED;
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out:
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systable->boottime->exit(handle, ret, sizeof(text), text);
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/*
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* This statement should not be reached.
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* To enable testing use a different return value.
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*/
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return EFI_SUCCESS;
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}
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