Espressobin

  • manual flashing to latest u-boot is mandatory! Download the right boot flash for your board: 512,1G,2G, number of RAM chips and appropirate memory speeds. You can obtain numbers from current boot prompt. Copy this flash-image-MEM-RAM_CHIPS-CPU_DDR_boot_sd_and_usb.bin to your FAT formatted USB key, plug it into USB3.0 port and execute from u-boot prompt:
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      bubt flash-image-MEM-RAM_CHIPS-CPU_DDR_boot_sd_and_usb.bin spi usb

    After updating your SPI flash with most recent “sd_and_usb” u-boot, you can boot from USB or SD card the exact same way.

  • in case you came from stock boot loader or your boot environment was erased somehow, this is what you need to put into u-boot:
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      setenv initrd_addr 0x1100000
  setenv image_name boot/Image
  setenv load_script 'if test -e mmc 0:1 boot/boot.scr; then echo \"... booting from SD\";setenv boot_interface mmc;else echo \"... booting from USB/SATA\";usb start;setenv boot_interface usb;fi;if test -e \$boot_interface 0:1 boot/boot.scr;then ext4load \$boot_interface 0:1 0x00800000 boot/boot.scr; source; fi'
  setenv bootcmd 'run get_images; run set_bootargs; run load_script;booti \$kernel_addr \$ramfs_addr \$fdt_addr'
  saveenv
    • If you manage to crash your SPI, proceed with SATA boot recovery.
    • booting directly from SATA is currently broken.
    • rebooting works with 4.14.y and SD media while it is broken with SATA and USB (always stops)