1 /* 2 * Copyright 2003-2005, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 */ 5 6 7 #include "menu.h" 8 #include "loader.h" 9 #include "load_driver_settings.h" 10 11 #include <boot/stage2.h> 12 #include <boot/vfs.h> 13 #include <boot/platform.h> 14 #include <boot/heap.h> 15 #include <boot/stdio.h> 16 17 #include <util/kernel_cpp.h> 18 19 20 //#define TRACE_MAIN 21 #ifdef TRACE_MAIN 22 # define TRACE(x) dprintf x 23 #else 24 # define TRACE(x) ; 25 #endif 26 27 28 extern "C" int 29 main(stage2_args *args) 30 { 31 TRACE(("boot(): enter\n")); 32 33 if (heap_init(args) < B_OK) 34 panic("Could not initialize heap!\n"); 35 36 TRACE(("boot(): heap initialized...\n")); 37 38 platform_init_video(); 39 40 // the main platform dependent initialisation 41 // has already taken place at this point. 42 43 if (vfs_init(args) < B_OK) 44 panic("Could not initialize VFS!\n"); 45 46 dprintf("Welcome to the Haiku boot loader!\n"); 47 48 bool mountedAllVolumes = false; 49 50 Directory *volume = get_boot_file_system(args); 51 52 if (volume == NULL || (platform_boot_options() & BOOT_OPTION_MENU) != 0) { 53 if (volume == NULL) 54 puts("\tno boot path found, scan for all partitions...\n"); 55 56 if (mount_file_systems(args) < B_OK) { 57 // That's unfortunate, but we still give the user the possibility 58 // to insert a CD-ROM or just rescan the available devices 59 puts("Could not locate any supported boot devices!\n"); 60 } 61 62 // ToDo: check if there is only one bootable volume! 63 64 mountedAllVolumes = true; 65 66 if (user_menu(&volume) < B_OK) { 67 // user requested to quit the loader 68 goto out; 69 } 70 } 71 72 if (volume != NULL) { 73 // we got a volume to boot from! 74 status_t status; 75 while ((status = load_kernel(args, volume)) < B_OK) { 76 // loading the kernel failed, so let the user choose another 77 // volume to boot from until it works 78 volume = NULL; 79 80 if (!mountedAllVolumes) { 81 // mount all other file systems, if not already happened 82 if (mount_file_systems(args) < B_OK) 83 panic("Could not locate any supported boot devices!\n"); 84 85 mountedAllVolumes = true; 86 } 87 88 if (user_menu(&volume) < B_OK || volume == NULL) { 89 // user requested to quit the loader 90 goto out; 91 } 92 } 93 94 // if everything is okay, continue booting; the kernel 95 // is already loaded at this point and we definitely 96 // know our boot volume, too 97 if (status == B_OK) { 98 register_boot_file_system(volume); 99 100 if ((platform_boot_options() & BOOT_OPTION_DEBUG_OUTPUT) == 0) 101 platform_switch_to_logo(); 102 103 load_modules(args, volume); 104 load_driver_settings(args, volume); 105 106 // set up kernel args version info 107 gKernelArgs.kernel_args_size = sizeof(kernel_args); 108 gKernelArgs.version = CURRENT_KERNEL_ARGS_VERSION; 109 110 // ToDo: cleanup, heap_release() etc. 111 platform_start_kernel(); 112 } 113 } 114 115 out: 116 heap_release(args); 117 return 0; 118 } 119