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

• friendly arm NanoPi NEO - TESTED OK
• MX3 h3 - TESTED OK ( boot from MMC, NAND in progress )
• M16 LITE H3 - WAIT
• Orange Pi ZeroZero h2+ - TESTED OK
• Orange Pi Zero Plus2 h3 - TESTED OK
• Orange Pi Zero R1 - TESTED OK
• Orange Pi One - TESTED OK
• Orange Pi PC - TESTED OK
• Orange Pi PC+ - NOT TESTED
• Orange Pi Plus2E - NOT TESTED
• Orange Pi Lite - NOT TESTED

• boot from h2+ h3 sunxi boards
• 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 )
• improved i2c available for any gpios (configurable soft mode) not only for TWI0 (PA11 PA12) or TWI0 (PA18 PA19)
• splash screen on ssd1306 i2c OLED 128x64 display TWI0 or TWI1 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 fixes
• boot from NAND in progress ( 04/30/2019 ) for MX3

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!

cd /tmp
mkdir zero_builder
cd  zero_builder

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

./uboot_prepare
./uboot_build

!note: if have permissions problems with modprobe|mount overlay try sudo bash before ./uboot_prepare ...

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

wget http://raw.githubusercontent.com/hyphop/miZy-uboot/master/make_it_easy -O- | sh -

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

• dtc v1.4.3 (flex + bison)
• toolchain-arm_cortex-a9+neon_gcc-5.3.0_musl-1.1.15_eabi

its easy and automated by scripts!

• https://github.com/hyphop/miZy-uboot/releases/download/v0.1-beta/uboot-mizy.bin

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

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.

• https://github.com/hyphop/miZy-linux-kernel
• https://github.com/hyphop/miZy-builder
• https://github.com/hyphop/miZy-uboot
• https://hyphop.github.io/mizy/ - miZy - Tiny fast embeded linux