Pine A64 Rust Workspace

Crates

• pine64 : pine-a64 device crate, registers defined via bounded-registers
• pine64-hal : embedded-hal trait impls
• pine64-lts-bsp : pine64-lts board support crate

Building

rustc 1.46.0-nightly (346aec9b0 2020-07-11)

rustup target add aarch64-unknown-none

cargo build --release

Copy elf to binary:

cargo objcopy -- -O binary target/aarch64-unknown-none/release/<img> /dest/<img>.bin

cargo objcopy --release -- -O binary /dest/<img>.bin

U-boot

TODO - track u-boot.cfg here

CONFIG_CMD_CACHE=y
CONFIG_ENV_FAT_DEVICE_AND_PART="0:auto"

ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make pine64-lts_defconfig
ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make
dd if=u-boot-sunxi-with-spl.bin of=/dev/sda bs=1k seek=8

U-Boot SPL 2020.10-rc1-00148-g719f42190d-dirty (Aug 01 2020 - 07:59:39 -0700)
...

U-Boot 2020.10-rc1-00148-g719f42190d-dirty (Aug 01 2020 - 08:04:33 -0700) Allwinner Technology
...

Environment:

setenv imgname img.bin

setenv loadaddr 0x42000000

# Make sure the caches are off for now
setenv bootimg 'tftp ${loadaddr} ${serverip}:${imgname}; dcache flush; dcache off; go ${loadaddr}'

Links

• Pine A64 Specs
• PinePhone Specs
• linux-sunxi A64
• sun50i-a64-sopine-baseboard.dts
• sun50i-a64-sopine.dtsi
• sun50i-a64.dtsi

...

• check svd2rust for the latest peripheral materialization patterns
  • https://github.com/rust-embedded/cortex-m/commit/64dc07d286163bc0c666b7d7058107c3f688bb32
• interrupts and consts in the device crate
  • rust-embedded/cortex-m#241
  • rust-embedded/cortex-m#235
• update the boot crate to use llvm_asm!
• add all the PIO registers/pins/etc
• gpio ExtiPin patterns
• generate UART1-4 device/reg impls with a macro
• switch UART device to have aliased registers instead of multiple register blocks and type state
• CCU device for peripheral resets/etc
• use Infallible instead of Void
• BSP crates: pine-a64-lts and pinephone
• PR on bounded-regs for having a field named Width breaking things

Stuff for the PinePhone BSP crate

• PinePhone debug UART is UART0, PB8/PB9