root/drivers/staging/greybus/Documentation/firmware/firmware.c

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DEFINITIONS

This source file includes following definitions.
  1. usage
  2. update_intf_firmware
  3. update_backend_firmware
  4. main

   1 // SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
   2 /*
   3  * Sample code to test firmware-management protocol
   4  *
   5  * Copyright(c) 2016 Google Inc. All rights reserved.
   6  * Copyright(c) 2016 Linaro Ltd. All rights reserved.
   7  */
   8 
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <unistd.h>
  13 #include <sys/ioctl.h>
  14 #include <sys/stat.h>
  15 #include <fcntl.h>
  16 
  17 #include "../../greybus_firmware.h"
  18 
  19 #define FW_DEV_DEFAULT          "/dev/gb-fw-mgmt-0"
  20 #define FW_TAG_INT_DEFAULT      "s3f"
  21 #define FW_TAG_BCND_DEFAULT     "bf_01"
  22 #define FW_UPDATE_TYPE_DEFAULT  0
  23 #define FW_TIMEOUT_DEFAULT      10000
  24 
  25 static const char *firmware_tag;
  26 static const char *fwdev = FW_DEV_DEFAULT;
  27 static unsigned int fw_update_type = FW_UPDATE_TYPE_DEFAULT;
  28 static unsigned int fw_timeout = FW_TIMEOUT_DEFAULT;
  29 
  30 static struct fw_mgmt_ioc_get_intf_version intf_fw_info;
  31 static struct fw_mgmt_ioc_get_backend_version backend_fw_info;
  32 static struct fw_mgmt_ioc_intf_load_and_validate intf_load;
  33 static struct fw_mgmt_ioc_backend_fw_update backend_update;
  34 
  35 static void usage(void)
  36 {
  37         printf("\nUsage: ./firmware <gb-fw-mgmt-X (default: gb-fw-mgmt-0)> <interface: 0, backend: 1 (default: 0)> <firmware-tag> (default: \"s3f\"/\"bf_01\") <timeout (default: 10000 ms)>\n");
  38 }
  39 
  40 static int update_intf_firmware(int fd)
  41 {
  42         int ret;
  43 
  44         /* Get Interface Firmware Version */
  45         printf("Get Interface Firmware Version\n");
  46 
  47         ret = ioctl(fd, FW_MGMT_IOC_GET_INTF_FW, &intf_fw_info);
  48         if (ret < 0) {
  49                 printf("Failed to get interface firmware version: %s (%d)\n",
  50                         fwdev, ret);
  51                 return -1;
  52         }
  53 
  54         printf("Interface Firmware tag (%s), major (%d), minor (%d)\n",
  55                 intf_fw_info.firmware_tag, intf_fw_info.major,
  56                 intf_fw_info.minor);
  57 
  58         /* Try Interface Firmware load over Unipro */
  59         printf("Loading Interface Firmware\n");
  60 
  61         intf_load.load_method = GB_FW_U_LOAD_METHOD_UNIPRO;
  62         intf_load.status = 0;
  63         intf_load.major = 0;
  64         intf_load.minor = 0;
  65 
  66         strncpy((char *)&intf_load.firmware_tag, firmware_tag,
  67                 GB_FIRMWARE_U_TAG_MAX_SIZE);
  68 
  69         ret = ioctl(fd, FW_MGMT_IOC_INTF_LOAD_AND_VALIDATE, &intf_load);
  70         if (ret < 0) {
  71                 printf("Failed to load interface firmware: %s (%d)\n", fwdev,
  72                         ret);
  73                 return -1;
  74         }
  75 
  76         if (intf_load.status != GB_FW_U_LOAD_STATUS_VALIDATED &&
  77             intf_load.status != GB_FW_U_LOAD_STATUS_UNVALIDATED) {
  78                 printf("Load status says loading failed: %d\n",
  79                         intf_load.status);
  80                 return -1;
  81         }
  82 
  83         printf("Interface Firmware (%s) Load done: major: %d, minor: %d, status: %d\n",
  84                 firmware_tag, intf_load.major, intf_load.minor,
  85                 intf_load.status);
  86 
  87         /* Initiate Mode-switch to the newly loaded firmware */
  88         printf("Initiate Mode switch\n");
  89 
  90         ret = ioctl(fd, FW_MGMT_IOC_MODE_SWITCH);
  91         if (ret < 0)
  92                 printf("Failed to initiate mode-switch (%d)\n", ret);
  93 
  94         return ret;
  95 }
  96 
  97 static int update_backend_firmware(int fd)
  98 {
  99         int ret;
 100 
 101         /* Get Backend Firmware Version */
 102         printf("Getting Backend Firmware Version\n");
 103 
 104         strncpy((char *)&backend_fw_info.firmware_tag, firmware_tag,
 105                 GB_FIRMWARE_U_TAG_MAX_SIZE);
 106 
 107 retry_fw_version:
 108         ret = ioctl(fd, FW_MGMT_IOC_GET_BACKEND_FW, &backend_fw_info);
 109         if (ret < 0) {
 110                 printf("Failed to get backend firmware version: %s (%d)\n",
 111                         fwdev, ret);
 112                 return -1;
 113         }
 114 
 115         printf("Backend Firmware tag (%s), major (%d), minor (%d), status (%d)\n",
 116                 backend_fw_info.firmware_tag, backend_fw_info.major,
 117                 backend_fw_info.minor, backend_fw_info.status);
 118 
 119         if (backend_fw_info.status == GB_FW_U_BACKEND_VERSION_STATUS_RETRY)
 120                 goto retry_fw_version;
 121 
 122         if ((backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_SUCCESS)
 123             && (backend_fw_info.status != GB_FW_U_BACKEND_VERSION_STATUS_NOT_AVAILABLE)) {
 124                 printf("Failed to get backend firmware version: %s (%d)\n",
 125                         fwdev, backend_fw_info.status);
 126                 return -1;
 127         }
 128 
 129         /* Try Backend Firmware Update over Unipro */
 130         printf("Updating Backend Firmware\n");
 131 
 132         strncpy((char *)&backend_update.firmware_tag, firmware_tag,
 133                 GB_FIRMWARE_U_TAG_MAX_SIZE);
 134 
 135 retry_fw_update:
 136         backend_update.status = 0;
 137 
 138         ret = ioctl(fd, FW_MGMT_IOC_INTF_BACKEND_FW_UPDATE, &backend_update);
 139         if (ret < 0) {
 140                 printf("Failed to load backend firmware: %s (%d)\n", fwdev, ret);
 141                 return -1;
 142         }
 143 
 144         if (backend_update.status == GB_FW_U_BACKEND_FW_STATUS_RETRY) {
 145                 printf("Retrying firmware update: %d\n", backend_update.status);
 146                 goto retry_fw_update;
 147         }
 148 
 149         if (backend_update.status != GB_FW_U_BACKEND_FW_STATUS_SUCCESS) {
 150                 printf("Load status says loading failed: %d\n",
 151                         backend_update.status);
 152         } else {
 153                 printf("Backend Firmware (%s) Load done: status: %d\n",
 154                                 firmware_tag, backend_update.status);
 155         }
 156 
 157         return 0;
 158 }
 159 
 160 int main(int argc, char *argv[])
 161 {
 162         int fd, ret;
 163         char *endptr;
 164 
 165         if (argc > 1 &&
 166             (!strcmp(argv[1], "-h") || !strcmp(argv[1], "--help"))) {
 167                 usage();
 168                 return -1;
 169         }
 170 
 171         if (argc > 1)
 172                 fwdev = argv[1];
 173 
 174         if (argc > 2)
 175                 fw_update_type = strtoul(argv[2], &endptr, 10);
 176 
 177         if (argc > 3)
 178                 firmware_tag = argv[3];
 179         else if (!fw_update_type)
 180                 firmware_tag = FW_TAG_INT_DEFAULT;
 181         else
 182                 firmware_tag = FW_TAG_BCND_DEFAULT;
 183 
 184         if (argc > 4)
 185                 fw_timeout = strtoul(argv[4], &endptr, 10);
 186 
 187         printf("Trying Firmware update: fwdev: %s, type: %s, tag: %s, timeout: %u\n",
 188                 fwdev, fw_update_type == 0 ? "interface" : "backend",
 189                 firmware_tag, fw_timeout);
 190 
 191         printf("Opening %s firmware management device\n", fwdev);
 192 
 193         fd = open(fwdev, O_RDWR);
 194         if (fd < 0) {
 195                 printf("Failed to open: %s\n", fwdev);
 196                 return -1;
 197         }
 198 
 199         /* Set Timeout */
 200         printf("Setting timeout to %u ms\n", fw_timeout);
 201 
 202         ret = ioctl(fd, FW_MGMT_IOC_SET_TIMEOUT_MS, &fw_timeout);
 203         if (ret < 0) {
 204                 printf("Failed to set timeout: %s (%d)\n", fwdev, ret);
 205                 ret = -1;
 206                 goto close_fd;
 207         }
 208 
 209         if (!fw_update_type)
 210                 ret = update_intf_firmware(fd);
 211         else
 212                 ret = update_backend_firmware(fd);
 213 
 214 close_fd:
 215         close(fd);
 216 
 217         return ret;
 218 }

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