v0.3.0

• Set PICO_FLASH_SPI_CLKDIV=2 when building boot2

This doubles the flash access speed to the value used by the C SDK by default. So it should usually be safe. However, if you are overclocking the RP2040, you might need to lower the flash speed accordingly.

v0.2.1

• Update boot2 code from SDK version 1.4.0 (No changes to resulting binaries, but include structure is different)
• Add more boot2 versions:
  • BOOT_LOADER_W25X10CL
  • BOOT_LOADER_GENERIC_03H
  • BOOT_LOADER_IS25LP080

v0.2.0

See https://crates.io/crates/rp2040-boot2/0.2.0.

• Added AT25SF128A support
• Ensured all bootloaders are built on a cargo build
• Enable building without GCC by providing precompiled binaries. Use --feature=assemble to opt out.
• Added CI using --feature=assemble to verify latest boot2 source matches bootloader binary blobs

v0.1.2

Tested on a Raspberry Pi Pico, flashed using elf2uf2 and writing the UF2 to mass storage.