The is the very first piece of code that runs when you power on a MediaTek device. It resides in the boot ROM and is responsible for initializing the hardware—specifically the internal RAM (LPDDR) and storage—before handing off control to the Android bootloader (u-boot or lk).
(Device Working Sheet) file. For example, if adding a hardware-based feature like a new notification LED or sensor power: codegen.dws tool provided in the MediaTek SDK. Configure the Ensure variables are named correctly (e.g., GPIO_MAIN_FLASHLIGHT_EN_PIN CSDN博客 2. Preloader Source Modification The preloader code resides in vendor/mediatek/proprietary/bootable/bootloader/preloader Hardware Initialization: Add your feature's init code in platform/ /src/drivers/ custom/ / GPIO Control: Use standard MediaTek HAL calls: // Example: Driving a GPIO high for a new feature preloader-k80hd-bsp-fwv-512m
: Professional tools like Infinity CM2MT2 or SP Flash Tool are used to backup and restore these files. The is the very first piece of code