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U-boot-wandboard

May 26, 2018

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U-Boot loader for Wandboard Solo, Dual, and Quad.

Install the u-boot.imx file onto the boot disk using

dd if=u-boot.imx of=/dev/whatever bs=1k oseek=1 conv=sync

The U-Boot built by this port expects the first 1MB of the boot media to be reserved for the U-Boot executable and saved environment. The u-boot.imx file begins at an offset of 1K from the start of the boot disk. The U-Boot environment area begins at an offset of 512K.

This version is patched so that

  • ELF and API features are enabled to support ubldr.
  • A single U-Boot image supports Solo, Dual[lite], and Quad processors.
  • When the selected board has multiple SD or MMC devices available, the mmc0 device in U-Boot and thus the disk0 device in loader8 will be whichever device U-Boot was loaded from by the ROM bootloader routines.

The sources for this port were originally obtained from commit 87f595d1ee at https//github.com/TechNexion/U-Boot-edm/ which appears to be a slightly modified fork of the stock U-Boot 2013.10 release. As of this writing, the changes in this fork have not been rolled back into upstream U-Boot.

For general information about U-Boot see WWW http//www.denx.de/wiki/U-Boot