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 // set debug syslog default 39 #if KDEBUG_ENABLE_DEBUG_SYSLOG 40 gKernelArgs.keep_debug_output_buffer = true; 41 #endif 42 43 add_stage2_driver_settings(args); 44 45 platform_init_video(); 46 47 // the main platform dependent initialisation 48 // has already taken place at this point. 49 50 if (vfs_init(args) < B_OK) 51 panic("Could not initialize VFS!\n"); 52 53 dprintf("Welcome to the Haiku boot loader!\n"); 54 55 bool mountedAllVolumes = false; 56 57 Directory *volume = get_boot_file_system(args); 58 59 if (volume == NULL || (platform_boot_options() & BOOT_OPTION_MENU) != 0) { 60 if (volume == NULL) 61 puts("\tno boot path found, scan for all partitions...\n"); 62 63 if (mount_file_systems(args) < B_OK) { 64 // That's unfortunate, but we still give the user the possibility 65 // to insert a CD-ROM or just rescan the available devices 66 puts("Could not locate any supported boot devices!\n"); 67 } 68 69 // ToDo: check if there is only one bootable volume! 70 71 mountedAllVolumes = true; 72 73 if (user_menu(&volume) < B_OK) { 74 // user requested to quit the loader 75 goto out; 76 } 77 } 78 79 if (volume != NULL) { 80 // we got a volume to boot from! 81 status_t status; 82 while ((status = load_kernel(args, volume)) < B_OK) { 83 // loading the kernel failed, so let the user choose another 84 // volume to boot from until it works 85 volume = NULL; 86 87 if (!mountedAllVolumes) { 88 // mount all other file systems, if not already happened 89 if (mount_file_systems(args) < B_OK) 90 panic("Could not locate any supported boot devices!\n"); 91 92 mountedAllVolumes = true; 93 } 94 95 if (user_menu(&volume) < B_OK || volume == NULL) { 96 // user requested to quit the loader 97 goto out; 98 } 99 } 100 101 // if everything is okay, continue booting; the kernel 102 // is already loaded at this point and we definitely 103 // know our boot volume, too 104 if (status == B_OK) { 105 register_boot_file_system(volume); 106 107 if ((platform_boot_options() & BOOT_OPTION_DEBUG_OUTPUT) == 0) 108 platform_switch_to_logo(); 109 110 load_modules(args, volume); 111 load_driver_settings(args, volume); 112 113 // apply boot settings 114 apply_boot_settings(); 115 116 // set up kernel args version info 117 gKernelArgs.kernel_args_size = sizeof(kernel_args); 118 gKernelArgs.version = CURRENT_KERNEL_ARGS_VERSION; 119 120 // clone the boot_volume KMessage into kernel accessible memory 121 // note, that we need to 4 byte align the buffer and thus allocate 122 // 3 more bytes 123 void* buffer = kernel_args_malloc(gBootVolume.ContentSize() + 3); 124 if (!buffer) { 125 panic("Could not allocate memory for the boot volume kernel " 126 "arguments"); 127 } 128 129 buffer = (void*)(((addr_t)buffer + 3) & ~(addr_t)0x3); 130 memcpy(buffer, gBootVolume.Buffer(), gBootVolume.ContentSize()); 131 gKernelArgs.boot_volume = buffer; 132 gKernelArgs.boot_volume_size = gBootVolume.ContentSize(); 133 134 // ToDo: cleanup, heap_release() etc. 135 platform_start_kernel(); 136 } 137 } 138 139 out: 140 heap_release(args); 141 return 0; 142 } 143