Restrict HID bootloader programming region (thanks to NicoHood).

[pub/USBasp.git] / Bootloaders / HID / BootloaderHID.c

diff --git a/Bootloaders/HID/BootloaderHID.c b/Bootloaders/HID/BootloaderHID.c
index 04fd0df..ec094b1 100644 (file)
--- a/Bootloaders/HID/BootloaderHID.c
+++ b/Bootloaders/HID/BootloaderHID.c
@@ -58,6 +58,11 @@ void Application_Jump_Check(void)
        /* If the reset source was the bootloader and the key is correct, clear it and jump to the application */
        if ((MCUSR & (1 << WDRF)) && (MagicBootKey == MAGIC_BOOT_KEY))
        {
+               /* Turn off the watchdog */
+               MCUSR &= ~(1 << WDRF);
+               wdt_disable();
+
+               /* Clear the boot key and jump to the user application */
                MagicBootKey = 0;
 
                // cppcheck-suppress constStatement
@@ -98,6 +103,9 @@ static void SetupHardware(void)
        MCUSR &= ~(1 << WDRF);
        wdt_disable();
 
+       /* Disable clock division */
+       clock_prescale_set(clock_div_1);
+
        /* Relocate the interrupt vector table to the bootloader section */
        MCUCR = (1 << IVCE);
        MCUCR = (1 << IVSEL);
@@ -153,7 +161,7 @@ void EVENT_USB_Device_ControlRequest(void)
                        {
                                RunBootloader = false;
                        }
-                       else
+                       else if (PageAddress < BOOT_START_ADDR)
                        {
                                /* Erase the given FLASH page, ready to be programmed */
                                boot_page_erase(PageAddress);