unleashed-firmware/bootloader

Flipper bootloader

What it does?

• Hardware initialization
• Boot process LED indicators
• Firmware update
• Firmware CRC check
• Interactive UI
• FS check
• Recovery mode
• Errata crutches

Targets

| Name | Bootloader | Firmware | Reset | DFU | | | Address | Address | Combo | Combo |

| f4 | 0x08000000 | 0x00008000 | L+Back | L+Back, hold L |

Also there is a ST bootloader combo available on empty device: L+Ok+Back, release Back,Left. Target independend code and headers in srcand target/include folders.

Building

With dev docker image:

docker-compose exec dev make -C bootloader

With toolchain installed in path:

make -C bootloader

Build Options

• DEBUG - 0/1 - enable or disable debug build. Default is 1.
• TARGET - string - target to build. Default is f4.

Flashing

Using stlink(st-flash):

make -C bootloader flash

Or use ST bootloader:

make -C bootloader upload

Debug

Using stlink (st-util + gdb):

make -C bootloader debug