added upload uboot

web/index.html

@@ -56,6 +56,9 @@
                     <button class="tab-btn" data-type="uboot">
                         U-Boot Environment
                     </button>
+                    <button class="tab-btn" data-type="uboot_bin">
+                        U-Boot Binary (SPL)
+                    </button>
                 </div>
 
                 <div class="upload-area">
@@ -81,6 +84,11 @@
                                 <span class="file-name" id="file-name"></span>
                             </label>
                         </div>
+                        <div class="upload-hint" id="upload-hint">
+                            ⚠️ U-Boot Binary will be written to SPI NOR
+                            (/dev/mtd0) and SD card at 8KB offset (/dev/mmcblk1
+                            +8KB)
+                        </div>
                         <button type="submit" class="upload-btn">Upload</button>
                     </form>