git.zerfleddert.de Git - hmcfgusb/blob - flash-hmcfgusb.c

   1 /* (not working) flasher for HM-CFG-USB
   2  *
   3  * Copyright (c) 2013 Michael Gernoth <michael@gernoth.net>
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a copy
   6  * of this software and associated documentation files (the "Software"), to
   7  * deal in the Software without restriction, including without limitation the
   8  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   9  * sell copies of the Software, and to permit persons to whom the Software is
  10  * furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <unistd.h>
  27 #include <stdint.h>
  28 #include <string.h>
  29 #include <strings.h>
  30 #include <poll.h>
  31 #include <errno.h>
  32 #include <sys/types.h>
  33 #include <sys/stat.h>
  34 #include <fcntl.h>
  35 #include <sys/time.h>
  36 #include <libusb-1.0/libusb.h>
  37
  38 #include "hexdump.h"
  39 #include "hmcfgusb.h"
  40
  41 struct recv_data {
  42 };
  43
  44 static int parse_hmcfgusb(uint8_t *buf, int buf_len, void *data)
  45 {
  46         if (buf_len < 1)
  47                 return 1;
  48
  49         switch(buf[0]) {
  50                 case 'E':
  51                 case 'H':
  52                 case 'R':
  53                 case 'I':
  54                         break;
  55                 default:
  56                         hexdump(buf, buf_len, "Unknown> ");
  57                         break;
  58         }
  59
  60         return 1;
  61 }
  62
  63 static uint8_t ascii_to_nibble(uint8_t a)
  64 {
  65         uint8_t c = 0x00;
  66
  67         if ((a >= '0') && (a <= '9')) {
  68                 c = a - '0';
  69         } else if ((a >= 'A') && (a <= 'F')) {
  70                 c = (a - 'A') + 10;
  71         } else if ((a >= 'a') && (a <= 'f')) {
  72                 c = (a - 'a') + 10;
  73         }
  74
  75         return c;
  76 }
  77
  78 int main(int argc, char **argv)
  79 {
  80         struct hmcfgusb_dev *dev;
  81         struct recv_data rdata;
  82         uint8_t out[4096];
  83         uint8_t buf[4096];
  84         uint8_t *outp;
  85         int fd;
  86         int r;
  87         int i;
  88         int cnt;
  89         int pkt;
  90
  91         hmcfgusb_set_debug(0);
  92
  93         memset(&rdata, 0, sizeof(rdata));
  94
  95         dev = hmcfgusb_init(parse_hmcfgusb, &rdata);
  96         if (!dev) {
  97                 fprintf(stderr, "Can't initialize HM-CFG-USB\n");
  98                 exit(EXIT_FAILURE);
  99         }
 100         printf("HM-CFG-USB opened!\n");
 101
 102         fd = open("hmusbif.enc", O_RDONLY);
 103         if (fd < 0) {
 104                 perror("Can't open hmusbif.enc");
 105                 exit(EXIT_FAILURE);
 106         }
 107
 108         cnt = 0;
 109         pkt = 0;
 110         do {
 111                 int len;
 112
 113                 memset(buf, 0, sizeof(buf));
 114                 r = read(fd, buf, 4);
 115                 if (r < 0) {
 116                         perror("read");
 117                         exit(EXIT_FAILURE);
 118                 } else if (r == 0) {
 119                         break;
 120                 } else if (r != 4) {
 121                         printf("can't get length information!\n");
 122                         exit(EXIT_FAILURE);
 123                 }
 124
 125                 len = (ascii_to_nibble(buf[0]) & 0xf)<< 4;
 126                 len |= ascii_to_nibble(buf[1]) & 0xf;
 127                 len <<= 8;
 128                 len |= (ascii_to_nibble(buf[2]) & 0xf)<< 4;
 129                 len |= ascii_to_nibble(buf[3]) & 0xf;
 130
 131                 printf("packet length: %x\n", len);
 132
 133                 r = read(fd, buf, len * 2);
 134                 if (r < 0) {
 135                         perror("read");
 136                         exit(EXIT_FAILURE);
 137                 } else if (r < len * 2) {
 138                         printf("short read, aborting (%d < %d)\n", r, len * 2);
 139                         break;
 140                 }
 141
 142                 memset(out, 0, sizeof(out));
 143                 outp = out;
 144                 *outp++ = 'W';
 145                 *outp++ = (pkt >> 8) & 0xff;
 146                 *outp++ = pkt & 0xff;
 147                 *outp++ = (len >> 8) & 0xff;
 148                 *outp++ = len & 0xff;
 149                 for (i = 0; i < r; i+=2) {
 150                         *outp = (ascii_to_nibble(buf[i]) & 0xf)<< 4;
 151                         *outp |= ascii_to_nibble(buf[i+1]) & 0xf;
 152                         outp++;
 153                 }
 154                 cnt += r/2;
 155                 printf("Flashing %d bytes...\n", cnt);
 156                 hexdump(out, outp-out, "F> ");
 157                 //hmcfgusb_send(dev, out, r/2, 1);
 158                 pkt++;
 159         } while (r > 0);
 160
 161         hmcfgusb_close(dev);
 162
 163         return EXIT_SUCCESS;
 164 }