1 /* $NetBSD: AllocPages.c,v 1.1.1.1 2018/08/16 18:17:47 jmcneill Exp $ */
2
3
4 /*
5 * Copyright (C) 2013 Jerry Hoemann <jerry.hoemann@hp.com>
6 *
7 *
8 * Application to allocate memory at EFI. Syntax of command
9 * mimics the EFI Boot Service "AllocatePages."
10 *
11 * See UEFI spec 2.3, Section 6.2.
12 *
13 *
14
15
16
17
18 FS1:\> memmap
19 Type Start End #pages Attributes
20 BS_Code 0000000000000000-0000000000000FFF 0000000000000001 000000000000000F
21 Available 0000000000001000-000000000008DFFF 000000000000008D 000000000000000F
22 Reserved 000000000008E000-000000000008FFFF 0000000000000002 000000000000000F
23 Available 0000000000090000-000000000009FFFF 0000000000000010 000000000000000F
24 Available 0000000000100000-000000000FFFFFFF 000000000000FF00 000000000000000F
25 BS_Code 0000000010000000-0000000010061FFF 0000000000000062 000000000000000F
26 Available 0000000010062000-000000005CDFFFFF 000000000004CD9E 000000000000000F
27 ACPI_NVS 000000005CE00000-000000005DDFFFFF 0000000000001000 000000000000000F
28 BS_Data 000000005DE00000-000000005DFFFFFF 0000000000000200 000000000000000F
29 Available 000000005E000000-000000005EF1CFFF 0000000000000F1D 000000000000000F
30 BS_Data 000000005EF1D000-00000000709FBFFF 0000000000011ADF 000000000000000F
31 Available 00000000709FC000-00000000710E3FFF 00000000000006E8 000000000000000F
32 LoaderCode 00000000710E4000-00000000711FEFFF 000000000000011B 000000000000000F
33 Available 00000000711FF000-0000000071901FFF 0000000000000703 000000000000000F
34 BS_Code 0000000071902000-00000000721FEFFF 00000000000008FD 000000000000000F
35
36
37 Example to allocat 5 pages type BootCode at address 20000000 (hex)
38
39
40 FS1:\> AllocPages.efi 2 3 5 20000000
41 AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__]
42 __AllocType__ {0,1,2} -- Any, MaxAddr, Addr
43 __MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ...
44 __NumPages__ {0..F000000}
45 [__Addr__] 0... 3FFFFFFFFFFF
46 All numbers in hex no leading 0x
47
48 AllocatPage(2,3,5,20000000)
49
50
51 Example to allocat 5 pages type BootCode at address 30000000 (hex)
52
53
54 FS1:\> AllocPages.efi 2 3 5 30000000
55 AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__]
56 __AllocType__ {0,1,2} -- Any, MaxAddr, Addr
57 __MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ...
58 __NumPages__ {0..F000000}
59 [__Addr__] 0... 3FFFFFFFFFFF
60 All numbers in hex no leading 0x
61
62
63
64 FS1:\> memmap
65 Type Start End #pages Attributes
66 BS_Code 0000000000000000-0000000000000FFF 0000000000000001 000000000000000F
67 Available 0000000000001000-000000000008DFFF 000000000000008D 000000000000000F
68 Reserved 000000000008E000-000000000008FFFF 0000000000000002 000000000000000F
69 Available 0000000000090000-000000000009FFFF 0000000000000010 000000000000000F
70 Available 0000000000100000-000000000FFFFFFF 000000000000FF00 000000000000000F
71 BS_Code 0000000010000000-0000000010061FFF 0000000000000062 000000000000000F
72 Available 0000000010062000-000000001FFFFFFF 000000000000FF9E 000000000000000F
73 BS_Code 0000000020000000-0000000020004FFF 0000000000000005 000000000000000F
74 Available 0000000020005000-000000002FFFFFFF 000000000000FFFB 000000000000000F
75 BS_Code 0000000030000000-0000000030004FFF 0000000000000005 000000000000000F
76 Available 0000000030005000-000000005CDFFFFF 000000000002CDFB 000000000000000F
77 ACPI_NVS 000000005CE00000-000000005DDFFFFF 0000000000001000 000000000000000F
78 BS_Data 000000005DE00000-000000005DFFFFFF 0000000000000200 000000000000000F
79 Available 000000005E000000-000000005EF1CFFF 0000000000000F1D 000000000000000F
80 BS_Data 000000005EF1D000-00000000709FBFFF 0000000000011ADF 000000000000000F
81 Available 00000000709FC000-00000000710E3FFF 00000000000006E8 000000000000000F
82 LoaderCode 00000000710E4000-00000000711FEFFF 000000000000011B 000000000000000F
83 Available 00000000711FF000-0000000071901FFF 0000000000000703 000000000000000F
84 BS_Code 0000000071902000-00000000721FEFFF 00000000000008FD 000000000000000F
85
86
87
88
89
90 */
91
92 #include <efi.h>
93 #include <efilib.h>
94
95
96 #define MAX_NUM_PAGES 0x000000000F000000
97 #define MAX_ADDR ((1ULL << 46) - 1)
98
99
100 #ifdef DEBUG
101 #undef DEBUG
102 #endif
103 #define DEBUG 0
104
105
106
107 EFI_STATUS
efi_main(EFI_HANDLE image,EFI_SYSTEM_TABLE * systab)108 efi_main (EFI_HANDLE image, EFI_SYSTEM_TABLE *systab)
109 {
110
111 EFI_STATUS efi_status;
112 CHAR16 **argv;
113 INTN argc;
114 INTN err = 0;
115 #if DEBUG
116 INTN c = 0;
117 #endif
118 INTN AllocType = -1;
119 INTN MemType = -1;
120 INTN NumPages = -1;
121 EFI_PHYSICAL_ADDRESS Addr = 0;
122
123 InitializeLib(image, systab);
124
125 Print(L"AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__]\n");
126 Print(L"__AllocType__ {0,1,2} -- Any, MaxAddr, Addr\n");
127 Print(L"__MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ...\n");
128 Print(L"__NumPages__ {0..%x}\n", MAX_NUM_PAGES);
129 Print(L"[__Addr__] 0... %llx\n", MAX_ADDR);
130 Print(L"All numbers in hex no leading 0x\n");
131 Print(L"\n");
132
133 #if DEBUG
134 Print(L"Now get argc/argv\n");
135 #endif
136 argc = GetShellArgcArgv(image, &argv);
137 #if DEBUG
138 Print(L"argc = %d\n", argc);
139 #endif
140
141 #if DEBUG
142 for (c = 0; c < argc; c++ ) {
143 Print(L"argv[%d] = <%s>\n", c, argv[c]);
144 }
145 #endif
146 if ( (argc < 4) || (argc > 5) ) {
147 Print(L"Wrong argument count\n");
148 return EFI_SUCCESS;
149 }
150
151 AllocType = xtoi(argv[1]);
152 MemType = xtoi(argv[2]);
153 NumPages = xtoi(argv[3]);
154 if ( argc == 5 ) Addr = xtoi(argv[4]);
155
156 if ( (AllocType < 0) || (AllocType > 2)) {
157 Print(L"Invalid AllocType\n");
158 err++;
159 }
160 if ( (MemType < 0) || (MemType > 13) ) {
161 Print(L"Invalid MemType\n");
162 err++;
163 }
164 if ( (NumPages < 0) || (NumPages > MAX_NUM_PAGES) ) {
165 Print(L"Inavlid NumPages\n");
166 err++;
167 }
168 if ( Addr > MAX_ADDR ) {
169 Print(L"Inavlid Address\n");
170 err++;
171 }
172 if ( err ) {
173 return EFI_INVALID_PARAMETER;
174 }
175
176 Print(L"AllocatPage(%d,%d,%d,%lx)\n", AllocType, MemType, NumPages, Addr);
177
178 efi_status = uefi_call_wrapper(BS->AllocatePages, 4, AllocType, MemType, NumPages, &Addr);
179
180 if ( EFI_ERROR(efi_status) ) {
181 Print(L"Allocate Pages Failed: %d\n", efi_status);
182 return efi_status;
183 }
184
185 return EFI_SUCCESS;
186 }
187