1 // SPDX-License-Identifier: GPL-2.0+
3 * efi_selftest_variables
5 * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
7 * This unit test checks the runtime services for variables:
8 * GetVariable, GetNextVariableName, SetVariable, QueryVariableInfo.
11 #include <efi_selftest.h>
13 #define EFI_ST_MAX_DATA_SIZE 16
14 #define EFI_ST_MAX_VARNAME_SIZE 40
16 static struct efi_boot_services
*boottime
;
17 static struct efi_runtime_services
*runtime
;
18 static const efi_guid_t guid_vendor0
=
19 EFI_GUID(0x67029eb5, 0x0af2, 0xf6b1,
20 0xda, 0x53, 0xfc, 0xb5, 0x66, 0xdd, 0x1c, 0xe6);
21 static const efi_guid_t guid_vendor1
=
22 EFI_GUID(0xff629290, 0x1fc1, 0xd73f,
23 0x8f, 0xb1, 0x32, 0xf9, 0x0c, 0xa0, 0x42, 0xea);
28 * @handle handle of the loaded image
29 * @systable system table
31 static int setup(const efi_handle_t img_handle
,
32 const struct efi_system_table
*systable
)
34 boottime
= systable
->boottime
;
35 runtime
= systable
->runtime
;
37 return EFI_ST_SUCCESS
;
43 static int execute(void)
48 u8 v
[16] = {0x5d, 0xd1, 0x5e, 0x51, 0x5a, 0x05, 0xc7, 0x0c,
49 0x35, 0x4a, 0xae, 0x87, 0xa5, 0xdf, 0x0f, 0x65,};
50 u8 data
[EFI_ST_MAX_DATA_SIZE
];
51 u16 varname
[EFI_ST_MAX_VARNAME_SIZE
];
54 u64 max_storage
, rem_storage
, max_size
;
56 ret
= runtime
->query_variable_info(EFI_VARIABLE_BOOTSERVICE_ACCESS
,
57 &max_storage
, &rem_storage
,
59 if (ret
!= EFI_SUCCESS
) {
60 efi_st_todo("QueryVariableInfo failed\n");
61 } else if (!max_storage
|| !rem_storage
|| !max_size
) {
62 efi_st_error("QueryVariableInfo: wrong info\n");
63 return EFI_ST_FAILURE
;
66 ret
= runtime
->set_variable(L
"efi_st_var0", &guid_vendor0
,
67 EFI_VARIABLE_BOOTSERVICE_ACCESS
,
69 if (ret
!= EFI_SUCCESS
) {
70 efi_st_error("SetVariable failed\n");
71 return EFI_ST_FAILURE
;
75 ret
= runtime
->get_variable(L
"efi_st_var0", &guid_vendor0
,
77 if (ret
!= EFI_SUCCESS
) {
78 efi_st_error("GetVariable failed\n");
79 return EFI_ST_FAILURE
;
81 if (efi_st_memcmp(data
, v
+ 4, 3)) {
82 efi_st_error("GetVariable returned wrong value\n");
83 return EFI_ST_FAILURE
;
85 if (data
[3] != 0xff) {
86 efi_st_error("GetVariable wrote past the end of the buffer\n");
87 return EFI_ST_FAILURE
;
90 ret
= runtime
->set_variable(L
"efi_st_var1", &guid_vendor1
,
91 EFI_VARIABLE_BOOTSERVICE_ACCESS
,
93 if (ret
!= EFI_SUCCESS
) {
94 efi_st_error("SetVariable failed\n");
95 return EFI_ST_FAILURE
;
97 len
= EFI_ST_MAX_DATA_SIZE
;
98 ret
= runtime
->get_variable(L
"efi_st_var1", &guid_vendor1
,
100 if (ret
!= EFI_SUCCESS
) {
101 efi_st_error("GetVariable failed\n");
102 return EFI_ST_FAILURE
;
105 efi_st_error("GetVariable returned wrong length %u\n",
107 return EFI_ST_FAILURE
;
109 if (efi_st_memcmp(data
, v
, 8)) {
110 efi_st_error("GetVariable returned wrong value\n");
111 return EFI_ST_FAILURE
;
113 /* Append variable 1 */
114 ret
= runtime
->set_variable(L
"efi_st_var1", &guid_vendor1
,
115 EFI_VARIABLE_BOOTSERVICE_ACCESS
|
116 EFI_VARIABLE_APPEND_WRITE
,
118 if (ret
!= EFI_SUCCESS
) {
119 efi_st_error("SetVariable failed\n");
120 return EFI_ST_FAILURE
;
122 len
= EFI_ST_MAX_DATA_SIZE
;
123 ret
= runtime
->get_variable(L
"efi_st_var1", &guid_vendor1
,
125 if (ret
!= EFI_SUCCESS
) {
126 efi_st_error("GetVariable failed\n");
127 return EFI_ST_FAILURE
;
130 efi_st_todo("GetVariable returned wrong length %u\n",
132 if (efi_st_memcmp(data
, v
, len
))
133 efi_st_todo("GetVariable returned wrong value\n");
134 /* Enumerate variables */
135 boottime
->set_mem(&guid
, 16, 0);
139 len
= EFI_ST_MAX_VARNAME_SIZE
;
140 ret
= runtime
->get_next_variable_name(&len
, varname
, &guid
);
141 if (ret
== EFI_NOT_FOUND
)
143 if (ret
!= EFI_SUCCESS
) {
144 efi_st_error("GetNextVariableName failed (%u)\n",
146 return EFI_ST_FAILURE
;
148 if (!efi_st_memcmp(&guid
, &guid_vendor0
, sizeof(efi_guid_t
)) &&
149 !efi_st_strcmp_16_8(varname
, "efi_st_var0"))
151 if (!efi_st_memcmp(&guid
, &guid_vendor1
, sizeof(efi_guid_t
)) &&
152 !efi_st_strcmp_16_8(varname
, "efi_st_var1"))
157 "GetNextVariableName did not return all variables\n");
158 return EFI_ST_FAILURE
;
160 /* Delete variable 1 */
161 ret
= runtime
->set_variable(L
"efi_st_var1", &guid_vendor1
,
163 if (ret
!= EFI_SUCCESS
) {
164 efi_st_error("SetVariable failed\n");
165 return EFI_ST_FAILURE
;
167 len
= EFI_ST_MAX_DATA_SIZE
;
168 ret
= runtime
->get_variable(L
"efi_st_var1", &guid_vendor1
,
170 if (ret
!= EFI_NOT_FOUND
) {
171 efi_st_error("Variable was not deleted\n");
172 return EFI_ST_FAILURE
;
174 /* Delete variable 0 */
175 ret
= runtime
->set_variable(L
"efi_st_var0", &guid_vendor0
,
177 if (ret
!= EFI_SUCCESS
) {
178 efi_st_error("SetVariable failed\n");
179 return EFI_ST_FAILURE
;
181 len
= EFI_ST_MAX_DATA_SIZE
;
182 ret
= runtime
->get_variable(L
"efi_st_var0", &guid_vendor0
,
184 if (ret
!= EFI_NOT_FOUND
) {
185 efi_st_error("Variable was not deleted\n");
186 return EFI_ST_FAILURE
;
189 return EFI_ST_SUCCESS
;
192 EFI_UNIT_TEST(variables
) = {
194 .phase
= EFI_EXECUTE_BEFORE_BOOTTIME_EXIT
,