efi_selftest_miniapp_exit.c
2.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
// SPDX-License-Identifier: GPL-2.0+
/*
* efi_selftest_miniapp_exit
*
* Copyright (c) 2018 Heinrich Schuchardt
*
* This EFI application is run by the StartImage selftest.
* It uses the Exit boot service to return.
*/
#include <common.h>
#include <efi_selftest.h>
static efi_guid_t loaded_image_protocol_guid = EFI_LOADED_IMAGE_PROTOCOL_GUID;
/**
* check_loaded_image_protocol() - check image_base/image_size
*
* Try to open the loaded image protocol. Check that this function is located
* between image_base and image_base + image_size.
*
* @image_handle: handle of the loaded image
* @systable: system table
* @return: status code
*/
static efi_status_t EFIAPI check_loaded_image_protocol
(efi_handle_t image_handle, struct efi_system_table *systable)
{
struct efi_simple_text_output_protocol *cout = systable->con_out;
struct efi_boot_services *boottime = systable->boottime;
struct efi_loaded_image *loaded_image_protocol;
efi_status_t ret;
/*
* Open the loaded image protocol.
*/
ret = boottime->open_protocol
(image_handle, &loaded_image_protocol_guid,
(void **)&loaded_image_protocol, NULL,
NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL);
if (ret != EFI_SUCCESS) {
cout->output_string(cout,
L"Could not open loaded image protocol");
return ret;
}
if ((void *)check_loaded_image_protocol <
loaded_image_protocol->image_base ||
(void *)check_loaded_image_protocol >=
loaded_image_protocol->image_base +
loaded_image_protocol->image_size) {
cout->output_string(cout,
L"Incorrect image_base or image_size\n");
return EFI_NOT_FOUND;
}
return EFI_SUCCESS;
}
/**
* Entry point of the EFI application.
*
* @handle: handle of the loaded image
* @systable: system table
* @return: status code
*/
efi_status_t EFIAPI efi_main(efi_handle_t handle,
struct efi_system_table *systable)
{
struct efi_simple_text_output_protocol *con_out = systable->con_out;
efi_status_t ret;
u16 text[] = EFI_ST_SUCCESS_STR;
con_out->output_string(con_out, L"EFI application calling Exit\n");
if (check_loaded_image_protocol(handle, systable) != EFI_SUCCESS) {
con_out->output_string(con_out,
L"Loaded image protocol missing\n");
ret = EFI_NOT_FOUND;
goto out;
}
/* This return value is expected by the calling test */
ret = EFI_UNSUPPORTED;
out:
systable->boottime->exit(handle, ret, sizeof(text), text);
/*
* This statement should not be reached.
* To enable testing use a different return value.
*/
return EFI_SUCCESS;
}