Customisation of U-Boot for Edison x86

[rajakumaripilla]

I am customising the U boot source for compiling locally to make changes in uboot source of Edison.
I have downloaded the source Edison-u-boot, and trying to build the code.
I have configured for x86 with command as following
make coreboot-x86_defconfig,

1. is it the correct config for x86 Edison board?
   and want to build the code.
   When I do make,
   getting following error.

undefined reference to `__normal___udivdi3'
make: *** [u-boot] Error 1

Please suggest and provide documentation for customising Edison Uboot.
Provide links for sources of Uboot.

[rajakumaripilla]

Can anyone please suggest on this..

[andy-shev]

@rajakumaripilla Try my version here: https://github.com/andy-shev/u-boot/tree/edison
Command to use is make edison_defconfig; make -j4.

[0181532686cf4a31163be0bf3e6bb6732bf]

@andy-shev can you briefly describe your changes?

[htot]

Andy has upstreamed a lot of patches to u-boot. As you can see in his repo there are 3 more in the queue. So basically you get u-boot + 3. But if you mean what changed since 01org/edison-u-boot? That is a highly customized version of an old u-boot, so years of development passed. Most important: Andy's u-boot boots vanilla kernels (most recent: 4.14), while still able to boot the original image.

[andy-shev]

@lyssdod
Just forget about this (01org/edison-u-boot) repository and use upstream version of U-Boot. In my
branch now only two hack patches added (have no time and honestly no will to upstream them, feel free to do that):

• support for DFU timeout
• enabling SD card slot

All my current activity is tightly related to ACPI enabling.

[andy-shev]

Simple use upstream U-Boot. Or if you want Yocto solution, consider unofficial community project: https://github.com/edison-fw.

P.S. All mentioned hacks have actually been upstreamed.