Allwinner+a133+firmware+work ✦ Fast & Plus

Allwinner provides a downstream U-Boot branch with specific A133 patches. You often need to enable or disable features:

Common task: Modify include/configs/sun50i_a133.h to change console baud rate or boot delay. Recompile with: allwinner+a133+firmware+work

make CROSS_COMPILE=aarch64-linux-gnu- BL31=path/to/bl31.bin

Note: The A133 requires ARM Trusted Firmware (ATF) bl31.bin for booting Linux. Allwinner provides a downstream U-Boot branch with specific

The Allwinner A133 is a powerful, cost-effective application processor designed for tablets, automotive infotainment, smart displays, and industrial control panels. As a 64-bit, quad-core Cortex-A53 chip, it balances performance and power efficiency. However, working with its firmware—from bootloaders to Android or Linux images—can be challenging. This post is a deep dive into the A133 firmware ecosystem, covering build environments, boot flow, partitioning, and common customization tasks. Common task: Modify include/configs/sun50i_a133

sunxi-fel version

Allwinner’s official Windows tool. Works over USB in FEL mode.