Deleted Added
sdiff udiff text old ( 302408 ) new ( 329114 )
full compact
libefi.c (302408) libefi.c (329114)
1/*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
1/*-
2 * Copyright (c) 2000 Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

--- 11 unchanged lines hidden (view full) ---

20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
28__FBSDID("$FreeBSD: stable/11/sys/boot/efi/libefi/libefi.c 298230 2016-04-18 23:09:22Z allanjude $");
28__FBSDID("$FreeBSD: stable/11/sys/boot/efi/libefi/libefi.c 329114 2018-02-11 02:27:50Z kevans $");
29
30#include <efi.h>
31#include <eficonsctl.h>
32#include <efilib.h>
33#include <stand.h>
34
35EFI_HANDLE IH;
36EFI_SYSTEM_TABLE *ST;
37EFI_BOOT_SERVICES *BS;
38EFI_RUNTIME_SERVICES *RS;
39
29
30#include <efi.h>
31#include <eficonsctl.h>
32#include <efilib.h>
33#include <stand.h>
34
35EFI_HANDLE IH;
36EFI_SYSTEM_TABLE *ST;
37EFI_BOOT_SERVICES *BS;
38EFI_RUNTIME_SERVICES *RS;
39
40static EFI_PHYSICAL_ADDRESS heap;
41static UINTN heapsize;
42
43static CHAR16 *
44arg_skipsep(CHAR16 *argp)
45{
46
47 while (*argp == ' ' || *argp == '\t' || *argp == '\n')
48 argp++;
49 return (argp);
50}
51
52static CHAR16 *
53arg_skipword(CHAR16 *argp)
54{
55
56 while (*argp && *argp != ' ' && *argp != '\t' && *argp != '\n')
57 argp++;
58 return (argp);
59}
60
61void *
62efi_get_table(EFI_GUID *tbl)
63{
64 EFI_GUID *id;
65 int i;
66
67 for (i = 0; i < ST->NumberOfTableEntries; i++) {
68 id = &ST->ConfigurationTable[i].VendorGuid;
69 if (!memcmp(id, tbl, sizeof(EFI_GUID)))
70 return (ST->ConfigurationTable[i].VendorTable);
71 }
72 return (NULL);
73}
40void *
41efi_get_table(EFI_GUID *tbl)
42{
43 EFI_GUID *id;
44 int i;
45
46 for (i = 0; i < ST->NumberOfTableEntries; i++) {
47 id = &ST->ConfigurationTable[i].VendorGuid;
48 if (!memcmp(id, tbl, sizeof(EFI_GUID)))
49 return (ST->ConfigurationTable[i].VendorTable);
50 }
51 return (NULL);
52}
74
75void exit(EFI_STATUS exit_code)
76{
77
78 BS->FreePages(heap, EFI_SIZE_TO_PAGES(heapsize));
79 BS->Exit(IH, exit_code, 0, NULL);
80}
81
82void
83efi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *system_table)
84{
85 static EFI_GUID image_protocol = LOADED_IMAGE_PROTOCOL;
86 static EFI_GUID console_control_protocol =
87 EFI_CONSOLE_CONTROL_PROTOCOL_GUID;
88 EFI_CONSOLE_CONTROL_PROTOCOL *console_control = NULL;
89 EFI_LOADED_IMAGE *img;
90 CHAR16 *argp, *args, **argv;
91 EFI_STATUS status;
92 int argc, addprog;
93
94 IH = image_handle;
95 ST = system_table;
96 BS = ST->BootServices;
97 RS = ST->RuntimeServices;
98
99 status = BS->LocateProtocol(&console_control_protocol, NULL,
100 (VOID **)&console_control);
101 if (status == EFI_SUCCESS)
102 (void)console_control->SetMode(console_control,
103 EfiConsoleControlScreenText);
104
105 heapsize = 64 * 1024 * 1024;
106 status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData,
107 EFI_SIZE_TO_PAGES(heapsize), &heap);
108 if (status != EFI_SUCCESS)
109 BS->Exit(IH, status, 0, NULL);
110
111 setheap((void *)(uintptr_t)heap, (void *)(uintptr_t)(heap + heapsize));
112
113 /* Use exit() from here on... */
114
115 status = BS->HandleProtocol(IH, &image_protocol, (VOID**)&img);
116 if (status != EFI_SUCCESS)
117 exit(status);
118
119 /*
120 * Pre-process the (optional) load options. If the option string
121 * is given as an ASCII string, we use a poor man's ASCII to
122 * Unicode-16 translation. The size of the option string as given
123 * to us includes the terminating null character. We assume the
124 * string is an ASCII string if strlen() plus the terminating
125 * '\0' is less than LoadOptionsSize. Even if all Unicode-16
126 * characters have the upper 8 bits non-zero, the terminating
127 * null character will cause a one-off.
128 * If the string is already in Unicode-16, we make a copy so that
129 * we know we can always modify the string.
130 */
131 if (img->LoadOptionsSize > 0 && img->LoadOptions != NULL) {
132 if (img->LoadOptionsSize == strlen(img->LoadOptions) + 1) {
133 args = malloc(img->LoadOptionsSize << 1);
134 for (argc = 0; argc < img->LoadOptionsSize; argc++)
135 args[argc] = ((char*)img->LoadOptions)[argc];
136 } else {
137 args = malloc(img->LoadOptionsSize);
138 memcpy(args, img->LoadOptions, img->LoadOptionsSize);
139 }
140 } else
141 args = NULL;
142
143 /*
144 * Use a quick and dirty algorithm to build the argv vector. We
145 * first count the number of words. Then, after allocating the
146 * vector, we split the string up. We don't deal with quotes or
147 * other more advanced shell features.
148 * The EFI shell will pass the name of the image as the first
149 * word in the argument list. This does not happen if we're
150 * loaded by the boot manager. This is not so easy to figure
151 * out though. The ParentHandle is not always NULL, because
152 * there can be a function (=image) that will perform the task
153 * for the boot manager.
154 */
155 /* Part 1: Figure out if we need to add our program name. */
156 addprog = (args == NULL || img->ParentHandle == NULL ||
157 img->FilePath == NULL) ? 1 : 0;
158 if (!addprog) {
159 addprog =
160 (DevicePathType(img->FilePath) != MEDIA_DEVICE_PATH ||
161 DevicePathSubType(img->FilePath) != MEDIA_FILEPATH_DP ||
162 DevicePathNodeLength(img->FilePath) <=
163 sizeof(FILEPATH_DEVICE_PATH)) ? 1 : 0;
164 if (!addprog) {
165 /* XXX todo. */
166 }
167 }
168 /* Part 2: count words. */
169 argc = (addprog) ? 1 : 0;
170 argp = args;
171 while (argp != NULL && *argp != 0) {
172 argp = arg_skipsep(argp);
173 if (*argp == 0)
174 break;
175 argc++;
176 argp = arg_skipword(argp);
177 }
178 /* Part 3: build vector. */
179 argv = malloc((argc + 1) * sizeof(CHAR16*));
180 argc = 0;
181 if (addprog)
182 argv[argc++] = (CHAR16 *)L"loader.efi";
183 argp = args;
184 while (argp != NULL && *argp != 0) {
185 argp = arg_skipsep(argp);
186 if (*argp == 0)
187 break;
188 argv[argc++] = argp;
189 argp = arg_skipword(argp);
190 /* Terminate the words. */
191 if (*argp != 0)
192 *argp++ = 0;
193 }
194 argv[argc] = NULL;
195
196 status = main(argc, argv);
197 exit(status);
198}