How to recompile and flash U-Boot only.

[Bernard_G_Intel]

In case some people are interested (done on Ubuntu 14.04)

Prerequisite:

git clone git://git.yoctoproject.org/meta-intel-edison

ln -s meta-intel-edison/utils/Makfile.mk Makefile

make setup

Setup:

cd out/linux64

source poky/oe-init-build-env

Files edition:

bitbake -c devshell u-boot

You get a new shell in u-boot sources directories. Modify the files as you need.

Compilation:

bitbake -f -c compile u-boot

Gernerate images:

bitbake -c build u-boot

../../../meta-intel-edison/utils/flash/postBuild.sh .

Note: Don't forget the . at the end of the line above!

Flash:

sudo toFlash/flashall.sh

To simplify and accelerate the flashing, you can comment the lines related to "Flashing boot partition (kernel)" and "Flashing rootfs".

In the end, your Edison board should boot your new U-Boot.

[Andriy_S_Intel]

Thanks for this, do you have the instructions how to do this having only the U-Boot Git repository clone? And just out of curiosity what is the version have you got at the end?

[HP1]

Thx for sharing this ...

but can I do this on Windows ... and what if my Edison is not booting at all anymore. i.e. this is my problem

When reverting back to an older image the u-boot of my edison got damaged and now is stopping to boot after the PSH kernel boot

******************************

PSH KERNEL VERSION: b0182b2b

WR: 20104000

******************************

SCU IPC: 0x800000d0 0xfffce92c

PSH miaHOB version: TNG.B0.VVBD.0000000c

microkernel built 11:24:08 Feb 5 2015

******* PSH loader *******

PCM page cache size = 192 KB

Cache Constraint = 0 Pages

Arming IPC driver ..

Adding page store pool ..

PagestoreAddr(IMR Start Address) = 0x04899000

pageStoreSize(IMR Size) = 0x00080000

*** Ready to receive application ***

So the kernel is not booting anymore and all the scripts that run on the edison won't work anymore

Thx

Hermann

[JJona4]

The minimal thing you need to do to flash a new u-boot is:

In u-boot:

=> run do_dfu_alt_info_mmc

=> dfu 0 mmc 0 10 # may need to be done more than once

On host machine:

# dfu-util --verbose --device 0x8087:0x0a99 --alt "u-boot0" --download u-boot.bin

# dfu-util --verbose --device 0x8087:0x0a99 --alt "u-boot-env0" ---download edison-blankcdc.bin

# dfu-util --verbose --device 0x8087:0x0a99 --alt "u-boot-env1" ---download edison-blankcdc.bin -R

`u-boot.bin` and `edison-blankcdc.bin` (and other environments) are found in `build/tmp/deply/images/edison/`. The `--alt` argument is the partition name; these are defined in the u-boot variable `dfu-alt-info`. The `-R` causes a reboot on success.

[Andriy_S_Intel]

jpkotta yeah, thanks, I'm playing with U-Boot v2016.11 itself right now, seems I'm about to get it working.