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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  *  * Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  *  * Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in
     12  *    the documentation and/or other materials provided with the
     13  *    distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
     22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <stdio.h>
     30 #include <stdlib.h>
     31 #include <stdarg.h>
     32 #include <string.h>
     33 #include <errno.h>
     34 #include <fcntl.h>
     35 #include <unistd.h>
     36 #include <limits.h>
     37 #include <ctype.h>
     38 
     39 #include <sys/time.h>
     40 #include <bootimg.h>
     41 #include <zipfile/zipfile.h>
     42 
     43 #include "fastboot.h"
     44 
     45 void bootimg_set_cmdline(boot_img_hdr *h, const char *cmdline);
     46 
     47 boot_img_hdr *mkbootimg(void *kernel, unsigned kernel_size,
     48                         void *ramdisk, unsigned ramdisk_size,
     49                         void *second, unsigned second_size,
     50                         unsigned page_size, unsigned base,
     51                         unsigned *bootimg_size);
     52 
     53 static usb_handle *usb = 0;
     54 static const char *serial = 0;
     55 static const char *product = 0;
     56 static const char *cmdline = 0;
     57 static int wipe_data = 0;
     58 static unsigned short vendor_id = 0;
     59 
     60 static unsigned base_addr = 0x10000000;
     61 
     62 void die(const char *fmt, ...)
     63 {
     64     va_list ap;
     65     va_start(ap, fmt);
     66     fprintf(stderr,"error: ");
     67     vfprintf(stderr, fmt, ap);
     68     fprintf(stderr,"\n");
     69     va_end(ap);
     70     exit(1);
     71 }
     72 
     73 void get_my_path(char *path);
     74 
     75 char *find_item(const char *item, const char *product)
     76 {
     77     char *dir;
     78     char *fn;
     79     char path[PATH_MAX + 128];
     80 
     81     if(!strcmp(item,"boot")) {
     82         fn = "boot.img";
     83     } else if(!strcmp(item,"recovery")) {
     84         fn = "recovery.img";
     85     } else if(!strcmp(item,"system")) {
     86         fn = "system.img";
     87     } else if(!strcmp(item,"userdata")) {
     88         fn = "userdata.img";
     89     } else if(!strcmp(item,"info")) {
     90         fn = "android-info.txt";
     91     } else {
     92         fprintf(stderr,"unknown partition '%s'\n", item);
     93         return 0;
     94     }
     95 
     96     if(product) {
     97         get_my_path(path);
     98         sprintf(path + strlen(path),
     99                 "../../../target/product/%s/%s", product, fn);
    100         return strdup(path);
    101     }
    102 
    103     dir = getenv("ANDROID_PRODUCT_OUT");
    104     if((dir == 0) || (dir[0] == 0)) {
    105         die("neither -p product specified nor ANDROID_PRODUCT_OUT set");
    106         return 0;
    107     }
    108 
    109     sprintf(path, "%s/%s", dir, fn);
    110     return strdup(path);
    111 }
    112 
    113 #ifdef _WIN32
    114 void *load_file(const char *fn, unsigned *_sz);
    115 #else
    116 void *load_file(const char *fn, unsigned *_sz)
    117 {
    118     char *data;
    119     int sz;
    120     int fd;
    121 
    122     data = 0;
    123     fd = open(fn, O_RDONLY);
    124     if(fd < 0) return 0;
    125 
    126     sz = lseek(fd, 0, SEEK_END);
    127     if(sz < 0) goto oops;
    128 
    129     if(lseek(fd, 0, SEEK_SET) != 0) goto oops;
    130 
    131     data = (char*) malloc(sz);
    132     if(data == 0) goto oops;
    133 
    134     if(read(fd, data, sz) != sz) goto oops;
    135     close(fd);
    136 
    137     if(_sz) *_sz = sz;
    138     return data;
    139 
    140 oops:
    141     close(fd);
    142     if(data != 0) free(data);
    143     return 0;
    144 }
    145 #endif
    146 
    147 int match_fastboot(usb_ifc_info *info)
    148 {
    149     if(!(vendor_id && (info->dev_vendor == vendor_id)) &&
    150        (info->dev_vendor != 0x18d1) &&  // Google
    151        (info->dev_vendor != 0x0451) &&
    152        (info->dev_vendor != 0x0502) &&
    153        (info->dev_vendor != 0x0fce) &&  // Sony Ericsson
    154        (info->dev_vendor != 0x05c6) &&  // Qualcomm
    155        (info->dev_vendor != 0x22b8) &&  // Motorola
    156        (info->dev_vendor != 0x0955) &&  // Nvidia
    157        (info->dev_vendor != 0x413c) &&  // DELL
    158        (info->dev_vendor != 0x0bb4))    // HTC
    159             return -1;
    160     if(info->ifc_class != 0xff) return -1;
    161     if(info->ifc_subclass != 0x42) return -1;
    162     if(info->ifc_protocol != 0x03) return -1;
    163     // require matching serial number if a serial number is specified
    164     // at the command line with the -s option.
    165     if (serial && strcmp(serial, info->serial_number) != 0) return -1;
    166     return 0;
    167 }
    168 
    169 int list_devices_callback(usb_ifc_info *info)
    170 {
    171     if (match_fastboot(info) == 0) {
    172         char* serial = info->serial_number;
    173         if (!info->writable) {
    174             serial = "no permissions"; // like "adb devices"
    175         }
    176         if (!serial[0]) {
    177             serial = "????????????";
    178         }
    179         // output compatible with "adb devices"
    180         printf("%s\tfastboot\n", serial);
    181     }
    182 
    183     return -1;
    184 }
    185 
    186 usb_handle *open_device(void)
    187 {
    188     static usb_handle *usb = 0;
    189     int announce = 1;
    190 
    191     if(usb) return usb;
    192 
    193     for(;;) {
    194         usb = usb_open(match_fastboot);
    195         if(usb) return usb;
    196         if(announce) {
    197             announce = 0;
    198             fprintf(stderr,"< waiting for device >\n");
    199         }
    200         sleep(1);
    201     }
    202 }
    203 
    204 void list_devices(void) {
    205     // We don't actually open a USB device here,
    206     // just getting our callback called so we can
    207     // list all the connected devices.
    208     usb_open(list_devices_callback);
    209 }
    210 
    211 void usage(void)
    212 {
    213     fprintf(stderr,
    214 /*           1234567890123456789012345678901234567890123456789012345678901234567890123456 */
    215             "usage: fastboot [ <option> ] <command>\n"
    216             "\n"
    217             "commands:\n"
    218             "  update <filename>                        reflash device from update.zip\n"
    219             "  flashall                                 flash boot + recovery + system\n"
    220             "  flash <partition> [ <filename> ]         write a file to a flash partition\n"
    221             "  erase <partition>                        erase a flash partition\n"
    222             "  getvar <variable>                        display a bootloader variable\n"
    223             "  boot <kernel> [ <ramdisk> ]              download and boot kernel\n"
    224             "  flash:raw boot <kernel> [ <ramdisk> ]    create bootimage and flash it\n"
    225             "  devices                                  list all connected devices\n"
    226             "  reboot                                   reboot device normally\n"
    227             "  reboot-bootloader                        reboot device into bootloader\n"
    228             "\n"
    229             "options:\n"
    230             "  -w                                       erase userdata and cache\n"
    231             "  -s <serial number>                       specify device serial number\n"
    232             "  -p <product>                             specify product name\n"
    233             "  -c <cmdline>                             override kernel commandline\n"
    234             "  -i <vendor id>                           specify a custom USB vendor id\n"
    235             "  -b <base_addr>                           specify a custom kernel base address\n"
    236             "  -n <page size>                           specify the nand page size. default: 2048\n"
    237         );
    238     exit(1);
    239 }
    240 
    241 void *load_bootable_image(unsigned page_size, const char *kernel, const char *ramdisk,
    242                           unsigned *sz, const char *cmdline)
    243 {
    244     void *kdata = 0, *rdata = 0;
    245     unsigned ksize = 0, rsize = 0;
    246     void *bdata;
    247     unsigned bsize;
    248 
    249     if(kernel == 0) {
    250         fprintf(stderr, "no image specified\n");
    251         return 0;
    252     }
    253 
    254     kdata = load_file(kernel, &ksize);
    255     if(kdata == 0) {
    256         fprintf(stderr, "cannot load '%s'\n", kernel);
    257         return 0;
    258     }
    259 
    260         /* is this actually a boot image? */
    261     if(!memcmp(kdata, BOOT_MAGIC, BOOT_MAGIC_SIZE)) {
    262         if(cmdline) bootimg_set_cmdline((boot_img_hdr*) kdata, cmdline);
    263 
    264         if(ramdisk) {
    265             fprintf(stderr, "cannot boot a boot.img *and* ramdisk\n");
    266             return 0;
    267         }
    268 
    269         *sz = ksize;
    270         return kdata;
    271     }
    272 
    273     if(ramdisk) {
    274         rdata = load_file(ramdisk, &rsize);
    275         if(rdata == 0) {
    276             fprintf(stderr,"cannot load '%s'\n", ramdisk);
    277             return  0;
    278         }
    279     }
    280 
    281     fprintf(stderr,"creating boot image...\n");
    282     bdata = mkbootimg(kdata, ksize, rdata, rsize, 0, 0, page_size, base_addr, &bsize);
    283     if(bdata == 0) {
    284         fprintf(stderr,"failed to create boot.img\n");
    285         return 0;
    286     }
    287     if(cmdline) bootimg_set_cmdline((boot_img_hdr*) bdata, cmdline);
    288     fprintf(stderr,"creating boot image - %d bytes\n", bsize);
    289     *sz = bsize;
    290 
    291     return bdata;
    292 }
    293 
    294 void *unzip_file(zipfile_t zip, const char *name, unsigned *sz)
    295 {
    296     void *data;
    297     zipentry_t entry;
    298     unsigned datasz;
    299 
    300     entry = lookup_zipentry(zip, name);
    301     if (entry == NULL) {
    302         fprintf(stderr, "archive does not contain '%s'\n", name);
    303         return 0;
    304     }
    305 
    306     *sz = get_zipentry_size(entry);
    307 
    308     datasz = *sz * 1.001;
    309     data = malloc(datasz);
    310 
    311     if(data == 0) {
    312         fprintf(stderr, "failed to allocate %d bytes\n", *sz);
    313         return 0;
    314     }
    315 
    316     if (decompress_zipentry(entry, data, datasz)) {
    317         fprintf(stderr, "failed to unzip '%s' from archive\n", name);
    318         free(data);
    319         return 0;
    320     }
    321 
    322     return data;
    323 }
    324 
    325 static char *strip(char *s)
    326 {
    327     int n;
    328     while(*s && isspace(*s)) s++;
    329     n = strlen(s);
    330     while(n-- > 0) {
    331         if(!isspace(s[n])) break;
    332         s[n] = 0;
    333     }
    334     return s;
    335 }
    336 
    337 #define MAX_OPTIONS 32
    338 static int setup_requirement_line(char *name)
    339 {
    340     char *val[MAX_OPTIONS];
    341     const char **out;
    342     unsigned n, count;
    343     char *x;
    344     int invert = 0;
    345 
    346     if (!strncmp(name, "reject ", 7)) {
    347         name += 7;
    348         invert = 1;
    349     } else if (!strncmp(name, "require ", 8)) {
    350         name += 8;
    351         invert = 0;
    352     }
    353 
    354     x = strchr(name, '=');
    355     if (x == 0) return 0;
    356     *x = 0;
    357     val[0] = x + 1;
    358 
    359     for(count = 1; count < MAX_OPTIONS; count++) {
    360         x = strchr(val[count - 1],'|');
    361         if (x == 0) break;
    362         *x = 0;
    363         val[count] = x + 1;
    364     }
    365 
    366     name = strip(name);
    367     for(n = 0; n < count; n++) val[n] = strip(val[n]);
    368 
    369     name = strip(name);
    370     if (name == 0) return -1;
    371 
    372         /* work around an unfortunate name mismatch */
    373     if (!strcmp(name,"board")) name = "product";
    374 
    375     out = malloc(sizeof(char*) * count);
    376     if (out == 0) return -1;
    377 
    378     for(n = 0; n < count; n++) {
    379         out[n] = strdup(strip(val[n]));
    380         if (out[n] == 0) return -1;
    381     }
    382 
    383     fb_queue_require(name, invert, n, out);
    384     return 0;
    385 }
    386 
    387 static void setup_requirements(char *data, unsigned sz)
    388 {
    389     char *s;
    390 
    391     s = data;
    392     while (sz-- > 0) {
    393         if(*s == '\n') {
    394             *s++ = 0;
    395             if (setup_requirement_line(data)) {
    396                 die("out of memory");
    397             }
    398             data = s;
    399         } else {
    400             s++;
    401         }
    402     }
    403 }
    404 
    405 void queue_info_dump(void)
    406 {
    407     fb_queue_notice("--------------------------------------------");
    408     fb_queue_display("version-bootloader", "Bootloader Version...");
    409     fb_queue_display("version-baseband",   "Baseband Version.....");
    410     fb_queue_display("serialno",           "Serial Number........");
    411     fb_queue_notice("--------------------------------------------");
    412 }
    413 
    414 void do_update_signature(zipfile_t zip, char *fn)
    415 {
    416     void *data;
    417     unsigned sz;
    418     data = unzip_file(zip, fn, &sz);
    419     if (data == 0) return;
    420     fb_queue_download("signature", data, sz);
    421     fb_queue_command("signature", "installing signature");
    422 }
    423 
    424 void do_update(char *fn)
    425 {
    426     void *zdata;
    427     unsigned zsize;
    428     void *data;
    429     unsigned sz;
    430     zipfile_t zip;
    431 
    432     queue_info_dump();
    433 
    434     zdata = load_file(fn, &zsize);
    435     if (zdata == 0) die("failed to load '%s'", fn);
    436 
    437     zip = init_zipfile(zdata, zsize);
    438     if(zip == 0) die("failed to access zipdata in '%s'");
    439 
    440     data = unzip_file(zip, "android-info.txt", &sz);
    441     if (data == 0) {
    442         char *tmp;
    443             /* fallback for older zipfiles */
    444         data = unzip_file(zip, "android-product.txt", &sz);
    445         if ((data == 0) || (sz < 1)) {
    446             die("update package has no android-info.txt or android-product.txt");
    447         }
    448         tmp = malloc(sz + 128);
    449         if (tmp == 0) die("out of memory");
    450         sprintf(tmp,"board=%sversion-baseband=0.66.04.19\n",(char*)data);
    451         data = tmp;
    452         sz = strlen(tmp);
    453     }
    454 
    455     setup_requirements(data, sz);
    456 
    457     data = unzip_file(zip, "boot.img", &sz);
    458     if (data == 0) die("update package missing boot.img");
    459     do_update_signature(zip, "boot.sig");
    460     fb_queue_flash("boot", data, sz);
    461 
    462     data = unzip_file(zip, "recovery.img", &sz);
    463     if (data != 0) {
    464         do_update_signature(zip, "recovery.sig");
    465         fb_queue_flash("recovery", data, sz);
    466     }
    467 
    468     data = unzip_file(zip, "system.img", &sz);
    469     if (data == 0) die("update package missing system.img");
    470     do_update_signature(zip, "system.sig");
    471     fb_queue_flash("system", data, sz);
    472 }
    473 
    474 void do_send_signature(char *fn)
    475 {
    476     void *data;
    477     unsigned sz;
    478     char *xtn;
    479 
    480     xtn = strrchr(fn, '.');
    481     if (!xtn) return;
    482     if (strcmp(xtn, ".img")) return;
    483 
    484     strcpy(xtn,".sig");
    485     data = load_file(fn, &sz);
    486     strcpy(xtn,".img");
    487     if (data == 0) return;
    488     fb_queue_download("signature", data, sz);
    489     fb_queue_command("signature", "installing signature");
    490 }
    491 
    492 void do_flashall(void)
    493 {
    494     char *fname;
    495     void *data;
    496     unsigned sz;
    497 
    498     queue_info_dump();
    499 
    500     fname = find_item("info", product);
    501     if (fname == 0) die("cannot find android-info.txt");
    502     data = load_file(fname, &sz);
    503     if (data == 0) die("could not load android-info.txt");
    504     setup_requirements(data, sz);
    505 
    506     fname = find_item("boot", product);
    507     data = load_file(fname, &sz);
    508     if (data == 0) die("could not load boot.img");
    509     do_send_signature(fname);
    510     fb_queue_flash("boot", data, sz);
    511 
    512     fname = find_item("recovery", product);
    513     data = load_file(fname, &sz);
    514     if (data != 0) {
    515         do_send_signature(fname);
    516         fb_queue_flash("recovery", data, sz);
    517     }
    518 
    519     fname = find_item("system", product);
    520     data = load_file(fname, &sz);
    521     if (data == 0) die("could not load system.img");
    522     do_send_signature(fname);
    523     fb_queue_flash("system", data, sz);
    524 }
    525 
    526 #define skip(n) do { argc -= (n); argv += (n); } while (0)
    527 #define require(n) do { if (argc < (n)) usage(); } while (0)
    528 
    529 int do_oem_command(int argc, char **argv)
    530 {
    531     int i;
    532     char command[256];
    533     if (argc <= 1) return 0;
    534 
    535     command[0] = 0;
    536     while(1) {
    537         strcat(command,*argv);
    538         skip(1);
    539         if(argc == 0) break;
    540         strcat(command," ");
    541     }
    542 
    543     fb_queue_command(command,"");
    544     return 0;
    545 }
    546 
    547 int main(int argc, char **argv)
    548 {
    549     int wants_wipe = 0;
    550     int wants_reboot = 0;
    551     int wants_reboot_bootloader = 0;
    552     void *data;
    553     unsigned sz;
    554     unsigned page_size = 2048;
    555 
    556     skip(1);
    557     if (argc == 0) {
    558         usage();
    559         return 0;
    560     }
    561 
    562     if (!strcmp(*argv, "devices")) {
    563         list_devices();
    564         return 0;
    565     }
    566 
    567     serial = getenv("ANDROID_SERIAL");
    568 
    569     while (argc > 0) {
    570         if(!strcmp(*argv, "-w")) {
    571             wants_wipe = 1;
    572             skip(1);
    573         } else if(!strcmp(*argv, "-b")) {
    574             require(2);
    575             base_addr = strtoul(argv[1], 0, 16);
    576             skip(2);
    577         } else if(!strcmp(*argv, "-n")) {
    578             require(2);
    579             page_size = (unsigned)strtoul(argv[1], NULL, 0);
    580             if (!page_size) die("invalid page size");
    581             skip(2);
    582         } else if(!strcmp(*argv, "-s")) {
    583             require(2);
    584             serial = argv[1];
    585             skip(2);
    586         } else if(!strcmp(*argv, "-p")) {
    587             require(2);
    588             product = argv[1];
    589             skip(2);
    590         } else if(!strcmp(*argv, "-c")) {
    591             require(2);
    592             cmdline = argv[1];
    593             skip(2);
    594         } else if(!strcmp(*argv, "-i")) {
    595             char *endptr = NULL;
    596             unsigned long val;
    597 
    598             require(2);
    599             val = strtoul(argv[1], &endptr, 0);
    600             if (!endptr || *endptr != '\0' || (val & ~0xffff))
    601                 die("invalid vendor id '%s'", argv[1]);
    602             vendor_id = (unsigned short)val;
    603             skip(2);
    604         } else if(!strcmp(*argv, "getvar")) {
    605             require(2);
    606             fb_queue_display(argv[1], argv[1]);
    607             skip(2);
    608         } else if(!strcmp(*argv, "erase")) {
    609             require(2);
    610             fb_queue_erase(argv[1]);
    611             skip(2);
    612         } else if(!strcmp(*argv, "signature")) {
    613             require(2);
    614             data = load_file(argv[1], &sz);
    615             if (data == 0) die("could not load '%s'", argv[1]);
    616             if (sz != 256) die("signature must be 256 bytes");
    617             fb_queue_download("signature", data, sz);
    618             fb_queue_command("signature", "installing signature");
    619             skip(2);
    620         } else if(!strcmp(*argv, "reboot")) {
    621             wants_reboot = 1;
    622             skip(1);
    623         } else if(!strcmp(*argv, "reboot-bootloader")) {
    624             wants_reboot_bootloader = 1;
    625             skip(1);
    626         } else if (!strcmp(*argv, "continue")) {
    627             fb_queue_command("continue", "resuming boot");
    628             skip(1);
    629         } else if(!strcmp(*argv, "boot")) {
    630             char *kname = 0;
    631             char *rname = 0;
    632             skip(1);
    633             if (argc > 0) {
    634                 kname = argv[0];
    635                 skip(1);
    636             }
    637             if (argc > 0) {
    638                 rname = argv[0];
    639                 skip(1);
    640             }
    641             data = load_bootable_image(page_size, kname, rname, &sz, cmdline);
    642             if (data == 0) return 1;
    643             fb_queue_download("boot.img", data, sz);
    644             fb_queue_command("boot", "booting");
    645         } else if(!strcmp(*argv, "flash")) {
    646             char *pname = argv[1];
    647             char *fname = 0;
    648             require(2);
    649             if (argc > 2) {
    650                 fname = argv[2];
    651                 skip(3);
    652             } else {
    653                 fname = find_item(pname, product);
    654                 skip(2);
    655             }
    656             if (fname == 0) die("cannot determine image filename for '%s'", pname);
    657             data = load_file(fname, &sz);
    658             if (data == 0) die("cannot load '%s'\n", fname);
    659             fb_queue_flash(pname, data, sz);
    660         } else if(!strcmp(*argv, "flash:raw")) {
    661             char *pname = argv[1];
    662             char *kname = argv[2];
    663             char *rname = 0;
    664             require(3);
    665             if(argc > 3) {
    666                 rname = argv[3];
    667                 skip(4);
    668             } else {
    669                 skip(3);
    670             }
    671             data = load_bootable_image(page_size, kname, rname, &sz, cmdline);
    672             if (data == 0) die("cannot load bootable image");
    673             fb_queue_flash(pname, data, sz);
    674         } else if(!strcmp(*argv, "flashall")) {
    675             skip(1);
    676             do_flashall();
    677             wants_reboot = 1;
    678         } else if(!strcmp(*argv, "update")) {
    679             if (argc > 1) {
    680                 do_update(argv[1]);
    681                 skip(2);
    682             } else {
    683                 do_update("update.zip");
    684                 skip(1);
    685             }
    686             wants_reboot = 1;
    687         } else if(!strcmp(*argv, "oem")) {
    688             argc = do_oem_command(argc, argv);
    689         } else {
    690             usage();
    691         }
    692     }
    693 
    694     if (wants_wipe) {
    695         fb_queue_erase("userdata");
    696         fb_queue_erase("cache");
    697     }
    698     if (wants_reboot) {
    699         fb_queue_reboot();
    700     } else if (wants_reboot_bootloader) {
    701         fb_queue_command("reboot-bootloader", "rebooting into bootloader");
    702     }
    703 
    704     usb = open_device();
    705 
    706     fb_execute_queue(usb);
    707     return 0;
    708 }
    709