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 (at) 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 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
Indexes created Sat Sep 20 22:09:52 GMT 2025