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miZy-uboot

Advanced u-boot (for sunxi Orange Pi Zero, another sunxi boards maybe work too ), ready for full load linux from spi-flash, i2c display, FEL mode, and many other improvement

Its just a part of miZy project, and same as other our parts can standalone used

Features

  • boot from spi-flash and next full load linux from spi-flash is ready via new added spiread cmd
  • ready for fast uboot & full linux load, with boot-time about 0.5 & 4-8 sec (MMC-SPI), from power-on time
  • 4x increase SPI-flash reading speed in SPL-loader and UBOOT ( spi work on 24Mhz freq now )
  • i2c available on TWI0 (PA11 PA12)
  • splash screen on ssd1306 i2c OLED 128x64 display TWI0 connected
  • ready for uboot splash screen customization
  • can fix (set or disable) FEL mode direct from uboot shell (write or clear FEL-loader on mmc)
  • support any LZMA LZO GZIP uboot packed images, and directly from uboot shell cmds
  • accept uboot images with bad crc
  • fast advanced configuration for build-in uboot environment, without recompilation
  • ready for next USB loading from any 3 usb ports
  • new improved building system full automated, speed + size optimized
  • easy write new patches with find_changes script
  • led indication and splash for boot process
  • many other small fix & adds

SPI NOTE

by default device can not have SPI flash or have only 2M bytes (mx25l1606e its enough for uboot only), needed re/install SPI flash to 4M or 8M or 16M bytes if u need full load linux from spi-flash. For example we have tested on W25q128 spi flash, and this worked well!

Get Source, Prepare, Build & Clear - need only 10-30 sec for build uboot

cd /tmp
mkdir zero_builder
cd  zero_builder

git clone https://github.com/hyphop/miZy-uboot
cd miZy-uboot

./uboot_prepare
./uboot_build

echo START; mkdir /tmp/zero_builder; cd /tmp/zero_builder; date ; git clone https://github.com/hyphop/miZy-uboot; cd miZy-uboot; ./uboot_prepare; ./uboot_build; date; echo "END"

if everything is ok, compilled uboot must be there ./uboot-mizy.bin, and ready for usage! now we can clear building data.

./uboot_clear_all

Output

  • u-boot-sunxi-with-spl.bin -> ./uboot-mizy/u-boot-sunxi-with-spl.bin
  • uboot-mizy.bin -> ../bin/uboot/uboot-mizy.bin

Deps and cross compilation

  • dtc v1.4.3
  • toolchain-arm_cortex-a9+neon_gcc-5.3.0_musl-1.1.15_eabi

its easy and automated by scripts!

miZy

miZy - open source minimalistic tiny fast embedded Linux system, (for sunxi Orange Pi Zero, another sunxi boards maybe work too )

NOTES

some source code parts in low quality ( sorry but I'm new to uboot ), some parts not annotated not documented, we stay in active develop now! wellcome to join us improve & tidy this code.

LINKS

;)

miZy