One of the shortcomings of the DragonBoard 410c was that it relied on the Android-phone-centric fastboot for any Kernel updates, but now there is a version of U-Boot available, thanks to Mateusz Kulikowski.. This is very much a work-in-progress, but I thought I would give it a try… I started with the version at https://github.com/hallor/u-boot/tree/dragonboard-2015.11.01, and made … Continue reading →
I decided to try U-Boot on the Raspberry Pi 2, and the process has been fairly well documented in several places.. I used the latest U-Boot, with ‘patch’ info from here, as I needed Device Tree support: https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=108217. Actual ‘installation’ is simple, as I just copied the u-boot binary to the boot directory on the SD Card, … Continue reading →
Now that the DreamPlug has a stable power supply (see previous post..) I decided to live dangerously and update the u-boot version and install a modern ‘device tree’ plus kernel.. It has been mentioned many times before that the u-boot update for a DreamPlug is fraught, and can result in a ‘brick’.. There should be a way … Continue reading →
On the hunch that there may be something within the U-Boot parameters that causes the boot-to-ram problem, I removed almost all the ‘wmt.xxx‘ parameters. The only one remaining was wmt.usb.param=11:3, which enables the USB subsystem – as I was booting from a USB-attached ‘disk’.. You can effectively ‘remove’ U-Boot parameters by setting their values to <blank>: setenv … Continue reading →
My initial success at getting the APC to boot from the micro-SD card instead of built-in ram was tempered by another issue.. Apart from examination of the boot process on the console, I had confirmed that device boots from the micro-SD card when I inadvertently formatted it as EXT3, and the boot process failed with an appropriate … Continue reading →
As the APCs are still ‘awaiting customs clearance’, I decided to try to cross-compile the kernel source available at github: https://github.com/apc-io/apc-8750 Unfortunately, many of the APC-specific drivers (‘wmt’) are currently missing.. The system is an Android 2.3 one, and the kernel is based – as you would expect – on Linux kernel version 2.6.32. (In this case … Continue reading →