diff options
Diffstat (limited to 'apps/AllocPages.c')
| -rw-r--r-- | apps/AllocPages.c | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/apps/AllocPages.c b/apps/AllocPages.c new file mode 100644 index 0000000..77a082e --- /dev/null +++ b/apps/AllocPages.c @@ -0,0 +1,184 @@ + +/* + * Copyright (C) 2013 Jerry Hoemann <jerry.hoemann@hp.com> + * + * + * Application to allocate memory at EFI. Syntax of command + * mimics the EFI Boot Service "AllocatePages." + * + * See UEFI spec 2.3, Section 6.2. + * + * + + + + +FS1:\> memmap +Type Start End #pages Attributes +BS_Code 0000000000000000-0000000000000FFF 0000000000000001 000000000000000F +Available 0000000000001000-000000000008DFFF 000000000000008D 000000000000000F +Reserved 000000000008E000-000000000008FFFF 0000000000000002 000000000000000F +Available 0000000000090000-000000000009FFFF 0000000000000010 000000000000000F +Available 0000000000100000-000000000FFFFFFF 000000000000FF00 000000000000000F +BS_Code 0000000010000000-0000000010061FFF 0000000000000062 000000000000000F +Available 0000000010062000-000000005CDFFFFF 000000000004CD9E 000000000000000F +ACPI_NVS 000000005CE00000-000000005DDFFFFF 0000000000001000 000000000000000F +BS_Data 000000005DE00000-000000005DFFFFFF 0000000000000200 000000000000000F +Available 000000005E000000-000000005EF1CFFF 0000000000000F1D 000000000000000F +BS_Data 000000005EF1D000-00000000709FBFFF 0000000000011ADF 000000000000000F +Available 00000000709FC000-00000000710E3FFF 00000000000006E8 000000000000000F +LoaderCode 00000000710E4000-00000000711FEFFF 000000000000011B 000000000000000F +Available 00000000711FF000-0000000071901FFF 0000000000000703 000000000000000F +BS_Code 0000000071902000-00000000721FEFFF 00000000000008FD 000000000000000F + + +Example to allocat 5 pages type BootCode at address 20000000 (hex) + + +FS1:\> AllocPages.efi 2 3 5 20000000 +AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__] +__AllocType__ {0,1,2} -- Any, MaxAddr, Addr +__MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ... +__NumPages__ {0..F000000} +[__Addr__] 0... 3FFFFFFFFFFF +All numbers in hex no leading 0x + +AllocatPage(2,3,5,20000000) + + +Example to allocat 5 pages type BootCode at address 30000000 (hex) + + +FS1:\> AllocPages.efi 2 3 5 30000000 +AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__] +__AllocType__ {0,1,2} -- Any, MaxAddr, Addr +__MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ... +__NumPages__ {0..F000000} +[__Addr__] 0... 3FFFFFFFFFFF +All numbers in hex no leading 0x + + + +FS1:\> memmap +Type Start End #pages Attributes +BS_Code 0000000000000000-0000000000000FFF 0000000000000001 000000000000000F +Available 0000000000001000-000000000008DFFF 000000000000008D 000000000000000F +Reserved 000000000008E000-000000000008FFFF 0000000000000002 000000000000000F +Available 0000000000090000-000000000009FFFF 0000000000000010 000000000000000F +Available 0000000000100000-000000000FFFFFFF 000000000000FF00 000000000000000F +BS_Code 0000000010000000-0000000010061FFF 0000000000000062 000000000000000F +Available 0000000010062000-000000001FFFFFFF 000000000000FF9E 000000000000000F +BS_Code 0000000020000000-0000000020004FFF 0000000000000005 000000000000000F +Available 0000000020005000-000000002FFFFFFF 000000000000FFFB 000000000000000F +BS_Code 0000000030000000-0000000030004FFF 0000000000000005 000000000000000F +Available 0000000030005000-000000005CDFFFFF 000000000002CDFB 000000000000000F +ACPI_NVS 000000005CE00000-000000005DDFFFFF 0000000000001000 000000000000000F +BS_Data 000000005DE00000-000000005DFFFFFF 0000000000000200 000000000000000F +Available 000000005E000000-000000005EF1CFFF 0000000000000F1D 000000000000000F +BS_Data 000000005EF1D000-00000000709FBFFF 0000000000011ADF 000000000000000F +Available 00000000709FC000-00000000710E3FFF 00000000000006E8 000000000000000F +LoaderCode 00000000710E4000-00000000711FEFFF 000000000000011B 000000000000000F +Available 00000000711FF000-0000000071901FFF 0000000000000703 000000000000000F +BS_Code 0000000071902000-00000000721FEFFF 00000000000008FD 000000000000000F + + + + + + */ + +#include <efi.h> +#include <efilib.h> + + +#define MAX_NUM_PAGES 0x000000000F000000 +#define MAX_ADDR ((1ULL << 46) - 1) + + +#ifdef DEBUG +#undef DEBUG +#endif +#define DEBUG 0 + + + +EFI_STATUS +efi_main (EFI_HANDLE image, EFI_SYSTEM_TABLE *systab) +{ + + EFI_STATUS efi_status; + CHAR16 **argv; + INTN argc; + INTN err = 0; +#if DEBUG + INTN c = 0; +#endif + INTN AllocType = -1; + INTN MemType = -1; + INTN NumPages = -1; + UINTN Addr = 0; + + InitializeLib(image, systab); + + Print(L"AllocatePage: __AllocType__ __MemType__ __NumPages__ [__Addr__]\n"); + Print(L"__AllocType__ {0,1,2} -- Any, MaxAddr, Addr\n"); + Print(L"__MemType__ {0..13}, Reserved ==0, LCode==1, LData==2, BSCode==3, BSData==4, ...\n"); + Print(L"__NumPages__ {0..%x}\n", MAX_NUM_PAGES); + Print(L"[__Addr__] 0... %llx\n", MAX_ADDR); + Print(L"All numbers in hex no leading 0x\n"); + Print(L"\n"); + +#if DEBUG + Print(L"Now get argc/argv\n"); +#endif + argc = GetShellArgcArgv(image, &argv); +#if DEBUG + Print(L"argc = %d\n", argc); +#endif + +#if DEBUG + for (c = 0; c < argc; c++ ) { + Print(L"argv[%d] = <%s>\n", c, argv[c]); + } +#endif + if ( (argc < 4) || (argc > 5) ) { + Print(L"Wrong argument count\n"); + return EFI_SUCCESS; + } + + AllocType = xtoi(argv[1]); + MemType = xtoi(argv[2]); + NumPages = xtoi(argv[3]); + if ( argc == 5 ) Addr = xtoi(argv[4]); + + if ( (AllocType < 0) || (AllocType > 2)) { + Print(L"Invalid AllocType\n"); + err++; + } + if ( (MemType < 0) || (MemType > 13) ) { + Print(L"Invalid MemType\n"); + err++; + } + if ( (NumPages < 0) || (NumPages > MAX_NUM_PAGES) ) { + Print(L"Inavlid NumPages\n"); + err++; + } + if ( Addr > MAX_ADDR ) { + Print(L"Inavlid Address\n"); + err++; + } + if ( err ) { + return EFI_INVALID_PARAMETER; + } + + Print(L"AllocatPage(%d,%d,%d,%lx)\n", AllocType, MemType, NumPages, Addr); + + efi_status = uefi_call_wrapper(BS->AllocatePages, 4, AllocType, MemType, NumPages, &Addr); + + if ( EFI_ERROR(efi_status) ) { + Print(L"Allocate Pages Failed: %d\n", efi_status); + return efi_status; + } + + return EFI_SUCCESS; +} |