177943Sdfr/*- 277943Sdfr * Copyright (c) 2000 Doug Rabson 377943Sdfr * All rights reserved. 477943Sdfr * 577943Sdfr * Redistribution and use in source and binary forms, with or without 677943Sdfr * modification, are permitted provided that the following conditions 777943Sdfr * are met: 877943Sdfr * 1. Redistributions of source code must retain the above copyright 977943Sdfr * notice, this list of conditions and the following disclaimer. 1077943Sdfr * 2. Redistributions in binary form must reproduce the above copyright 1177943Sdfr * notice, this list of conditions and the following disclaimer in the 1277943Sdfr * documentation and/or other materials provided with the distribution. 1377943Sdfr * 1477943Sdfr * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1577943Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1677943Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1777943Sdfr * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1877943Sdfr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1977943Sdfr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2077943Sdfr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2177943Sdfr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2277943Sdfr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2377943Sdfr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2477943Sdfr * SUCH DAMAGE. 2577943Sdfr */ 2677943Sdfr 27113038Sobrien#include <sys/cdefs.h> 28113038Sobrien__FBSDID("$FreeBSD: releng/10.2/sys/boot/efi/libefi/libefi.c 281323 2015-04-09 19:51:55Z jhb $"); 2978327Sobrien 3077943Sdfr#include <efi.h> 31271996Semaste#include <eficonsctl.h> 3277943Sdfr#include <efilib.h> 33107723Smarcel#include <stand.h> 3477943Sdfr 3577943SdfrEFI_HANDLE IH; 3677943SdfrEFI_SYSTEM_TABLE *ST; 3777943SdfrEFI_BOOT_SERVICES *BS; 3877943SdfrEFI_RUNTIME_SERVICES *RS; 3977943Sdfr 40107723Smarcelstatic EFI_PHYSICAL_ADDRESS heap; 41107723Smarcelstatic UINTN heapsize; 42107723Smarcel 43107723Smarcelstatic CHAR16 * 44107723Smarcelarg_skipsep(CHAR16 *argp) 45107723Smarcel{ 46107723Smarcel 47107723Smarcel while (*argp == ' ' || *argp == '\t') 48107723Smarcel argp++; 49107723Smarcel return (argp); 50107723Smarcel} 51107723Smarcel 52107723Smarcelstatic CHAR16 * 53107723Smarcelarg_skipword(CHAR16 *argp) 54107723Smarcel{ 55107723Smarcel 56107723Smarcel while (*argp && *argp != ' ' && *argp != '\t') 57107723Smarcel argp++; 58107723Smarcel return (argp); 59107723Smarcel} 60107723Smarcel 61107733Smarcelvoid * 62107733Smarcelefi_get_table(EFI_GUID *tbl) 63107733Smarcel{ 64107733Smarcel EFI_GUID *id; 65107733Smarcel int i; 66107733Smarcel 67107733Smarcel for (i = 0; i < ST->NumberOfTableEntries; i++) { 68107733Smarcel id = &ST->ConfigurationTable[i].VendorGuid; 69107733Smarcel if (!memcmp(id, tbl, sizeof(EFI_GUID))) 70107733Smarcel return (ST->ConfigurationTable[i].VendorTable); 71107733Smarcel } 72107733Smarcel return (NULL); 73107733Smarcel} 74107733Smarcel 75107723Smarcelvoid exit(EFI_STATUS exit_code) 76107723Smarcel{ 77107723Smarcel 78107723Smarcel BS->FreePages(heap, EFI_SIZE_TO_PAGES(heapsize)); 79107723Smarcel BS->Exit(IH, exit_code, 0, NULL); 80107723Smarcel} 81107723Smarcel 8277943Sdfrvoid 83107723Smarcelefi_main(EFI_HANDLE image_handle, EFI_SYSTEM_TABLE *system_table) 8477943Sdfr{ 85107723Smarcel static EFI_GUID image_protocol = LOADED_IMAGE_PROTOCOL; 86271996Semaste static EFI_GUID console_control_protocol = 87271996Semaste EFI_CONSOLE_CONTROL_PROTOCOL_GUID; 88271996Semaste EFI_CONSOLE_CONTROL_PROTOCOL *console_control = NULL; 89107723Smarcel EFI_LOADED_IMAGE *img; 90107723Smarcel CHAR16 *argp, *args, **argv; 91107723Smarcel EFI_STATUS status; 92107723Smarcel int argc, addprog; 93107723Smarcel 9477943Sdfr IH = image_handle; 9577943Sdfr ST = system_table; 9677943Sdfr BS = ST->BootServices; 9777943Sdfr RS = ST->RuntimeServices; 98107723Smarcel 99271996Semaste status = BS->LocateProtocol(&console_control_protocol, NULL, 100271996Semaste (VOID **)&console_control); 101271996Semaste if (status == EFI_SUCCESS) 102271996Semaste (void)console_control->SetMode(console_control, 103271996Semaste EfiConsoleControlScreenText); 104271996Semaste 105281323Sjhb heapsize = 3 * 1024 * 1024; 106107723Smarcel status = BS->AllocatePages(AllocateAnyPages, EfiLoaderData, 107107723Smarcel EFI_SIZE_TO_PAGES(heapsize), &heap); 108107723Smarcel if (status != EFI_SUCCESS) 109107723Smarcel BS->Exit(IH, status, 0, NULL); 110107723Smarcel 111163929Smarcel setheap((void *)(uintptr_t)heap, (void *)(uintptr_t)(heap + heapsize)); 112107723Smarcel 113107723Smarcel /* Use exit() from here on... */ 114107723Smarcel 115107723Smarcel status = BS->HandleProtocol(IH, &image_protocol, (VOID**)&img); 116107723Smarcel if (status != EFI_SUCCESS) 117107723Smarcel exit(status); 118107723Smarcel 119107723Smarcel /* 120107723Smarcel * Pre-process the (optional) load options. If the option string 121107723Smarcel * is given as an ASCII string, we use a poor man's ASCII to 122107723Smarcel * Unicode-16 translation. The size of the option string as given 123107723Smarcel * to us includes the terminating null character. We assume the 124107723Smarcel * string is an ASCII string if strlen() plus the terminating 125107723Smarcel * '\0' is less than LoadOptionsSize. Even if all Unicode-16 126107723Smarcel * characters have the upper 8 bits non-zero, the terminating 127107723Smarcel * null character will cause a one-off. 128107723Smarcel * If the string is already in Unicode-16, we make a copy so that 129107723Smarcel * we know we can always modify the string. 130107723Smarcel */ 131111692Smarcel if (img->LoadOptionsSize > 0 && img->LoadOptions != NULL) { 132107723Smarcel if (img->LoadOptionsSize == strlen(img->LoadOptions) + 1) { 133107723Smarcel args = malloc(img->LoadOptionsSize << 1); 134107723Smarcel for (argc = 0; argc < img->LoadOptionsSize; argc++) 135107723Smarcel args[argc] = ((char*)img->LoadOptions)[argc]; 136107723Smarcel } else { 137107723Smarcel args = malloc(img->LoadOptionsSize); 138107723Smarcel memcpy(args, img->LoadOptions, img->LoadOptionsSize); 139107723Smarcel } 140107723Smarcel } else 141107723Smarcel args = NULL; 142107723Smarcel 143107723Smarcel /* 144107723Smarcel * Use a quick and dirty algorithm to build the argv vector. We 145107723Smarcel * first count the number of words. Then, after allocating the 146107723Smarcel * vector, we split the string up. We don't deal with quotes or 147107723Smarcel * other more advanced shell features. 148243978Srpaulo * The EFI shell will pass the name of the image as the first 149107723Smarcel * word in the argument list. This does not happen if we're 150107723Smarcel * loaded by the boot manager. This is not so easy to figure 151107723Smarcel * out though. The ParentHandle is not always NULL, because 152107723Smarcel * there can be a function (=image) that will perform the task 153107723Smarcel * for the boot manager. 154107723Smarcel */ 155107723Smarcel /* Part 1: Figure out if we need to add our program name. */ 156107723Smarcel addprog = (args == NULL || img->ParentHandle == NULL || 157107723Smarcel img->FilePath == NULL) ? 1 : 0; 158107723Smarcel if (!addprog) { 159107723Smarcel addprog = 160107723Smarcel (DevicePathType(img->FilePath) != MEDIA_DEVICE_PATH || 161107723Smarcel DevicePathSubType(img->FilePath) != MEDIA_FILEPATH_DP || 162107723Smarcel DevicePathNodeLength(img->FilePath) <= 163107723Smarcel sizeof(FILEPATH_DEVICE_PATH)) ? 1 : 0; 164107723Smarcel if (!addprog) { 165107723Smarcel /* XXX todo. */ 166107723Smarcel } 167107723Smarcel } 168107723Smarcel /* Part 2: count words. */ 169107723Smarcel argc = (addprog) ? 1 : 0; 170107723Smarcel argp = args; 171107723Smarcel while (argp != NULL && *argp != 0) { 172107723Smarcel argp = arg_skipsep(argp); 173107723Smarcel if (*argp == 0) 174107723Smarcel break; 175107723Smarcel argc++; 176107723Smarcel argp = arg_skipword(argp); 177107723Smarcel } 178107723Smarcel /* Part 3: build vector. */ 179107723Smarcel argv = malloc((argc + 1) * sizeof(CHAR16*)); 180107723Smarcel argc = 0; 181107723Smarcel if (addprog) 182107723Smarcel argv[argc++] = L"loader.efi"; 183107723Smarcel argp = args; 184107723Smarcel while (argp != NULL && *argp != 0) { 185107723Smarcel argp = arg_skipsep(argp); 186107723Smarcel if (*argp == 0) 187107723Smarcel break; 188107723Smarcel argv[argc++] = argp; 189107723Smarcel argp = arg_skipword(argp); 190107723Smarcel /* Terminate the words. */ 191107723Smarcel if (*argp != 0) 192107723Smarcel *argp++ = 0; 193107723Smarcel } 194107723Smarcel argv[argc] = NULL; 195107723Smarcel 196107723Smarcel status = main(argc, argv); 197107723Smarcel exit(status); 19877943Sdfr} 199