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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include <errno.h>
     18 #include <fcntl.h>
     19 #include <linux/usbdevice_fs.h>
     20 #include <stdarg.h>
     21 #include <stdio.h>
     22 #include <stdlib.h>
     23 #include <string.h>
     24 #include <sys/ioctl.h>
     25 #include <sys/mman.h>
     26 #include <sys/stat.h>
     27 #include <sys/types.h>
     28 #include <time.h>
     29 #include <unistd.h>
     30 #include <termios.h>
     31 
     32 #include "update_cdma_modem.h"
     33 
     34 
     35 #define MODEM_DEVNODE "/dev/cdma_boot0"
     36 
     37 #define IOCTL_MODEM_ON          _IO('o', 0x19)
     38 #define IOCTL_MODEM_OFF         _IO('o', 0x20)
     39 #define IOCTL_MODEM_RESET       _IO('o', 0x21)
     40 #define IOCTL_MODEM_BOOT_ON     _IO('o', 0x22)
     41 #define IOCTL_MODEM_BOOT_OFF    _IO('o', 0x23)
     42 #define IOCTL_MODEM_START       _IO('o', 0x24)
     43 #define IOCTL_MODEM_SEND        _IO('o', 0x25)
     44 #define IOCTL_MODEM_RECV        _IO('o', 0x26)
     45 #define IOCTL_MODEM_STATUS      _IO('o', 0x27)
     46 #define IOCTL_MODEM_GOTA_START  _IO('o', 0x28)
     47 #define IOCTL_MODEM_FW_UPDATE   _IO('o', 0x29)
     48 
     49 /* buffer type for modem image */
     50 struct dpram_firmware {
     51   char *firmware;
     52   int size;
     53   int is_delta;
     54 };
     55 
     56 static int modem_download_ioctl_fw(int sel, struct dpram_firmware* fw)
     57 {
     58   int fd = open(MODEM_DEVNODE, O_RDWR);
     59   if (fd < 0) {
     60     fprintf(stderr, "Unable to open modem device (%s)\n", strerror(errno));
     61     return -1;
     62   }
     63   int ret = (fw != NULL) ? ioctl(fd, sel, fw) : ioctl(fd, sel);
     64   close(fd);
     65 
     66   return ret;
     67 }
     68 
     69 static int modem_download_ioctl(int sel)
     70 {
     71   return modem_download_ioctl_fw(sel, NULL);
     72 }
     73 
     74 int update_cdma_modem(const char* image_data, size_t image_size) {
     75   int ret;
     76   struct dpram_firmware fw;
     77 
     78   ret = modem_download_ioctl(IOCTL_MODEM_GOTA_START);
     79   if (ret < 0) {
     80     fprintf(stderr, "IOCTL_MODEM_GOTA_START failed: (%d)\n", ret);
     81     return -1;
     82   }
     83 
     84   ret = modem_download_ioctl(IOCTL_MODEM_BOOT_ON);
     85   if (ret < 0) {
     86     fprintf(stderr, "IOCTL_MODEM_BOOT_ON failed: (%d)\n", ret);
     87     return -1;
     88   }
     89 
     90   fw.firmware = image_data;
     91   fw.size = image_size;
     92   fw.is_delta = 0;
     93 
     94   ret = modem_download_ioctl_fw(IOCTL_MODEM_FW_UPDATE, &fw);
     95   if (ret < 0) {
     96     fprintf(stderr, "IOCTL_MODEM_FW_UPDATE failed: (%d)\n", ret);
     97     return -1;
     98   }
     99 
    100   ret = modem_download_ioctl(IOCTL_MODEM_BOOT_OFF);
    101   if (ret < 0) {
    102     fprintf(stderr, "IOCTL_MODEM_BOOT_OFF failed: (%d)\n", ret);
    103     return -1;
    104   }
    105 
    106   printf("Firmware update was successful\n");
    107 
    108   return 0;
    109 }
    110