[FS#131] cannot boot from kirkwood generic target uimage or zimage

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - bobafetthotmail (bobafetthotmail) 

Attached to Project - LEDE Project
Summary - cannot boot from kirkwood generic target uimage or zimage
Task Type - Bug Report
Category - Toolchain
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - I compiled latest LEDE with kirkwood generic target and I tried to boot uImage or zImage with stock uboot and with a modern uboot on a zyxel nsa310 (kirkwood SoC).

It recognizes the image as valid but fails to boot it.

Same behaviour on both uboots, and also same happens if I compile OpenWRT trunk and use their files.

I remember that some months ago I was able to simply append my device's dtb to the zimage, then make an uimage and it would boot that. Now it cannot boot if I do this.

here are the relevant uboot outputs (they are the same on both uboots)

**zimage**

NSA310> fatload usb 0 0x800000 lede-kirkwood-zimage ; bootz 0x800000
reading lede-kirkwood-zimage
1855964 bytes read in 94 ms (18.8 MiB/s)
Kernel image @ 0x800000 [ 0x000000 - 0x1c51d8 ]

Starting kernel ...

**uimage**

NSA310> fatload usb 0 0x800000 lede-kirkwood-uimage ; bootm 0x800000
reading lede-kirkwood-uimage
1856028 bytes read in 88 ms (20.1 MiB/s)
## Booting kernel from Legacy Image at 00800000 ...
   Image Name:   ARM LEDE Linux-4.4.19
   Created:      2016-08-31  11:57:05 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1855964 Bytes = 1.8 MiB
   Load Address: 00008000
   Entry Point:  00008000
   Verifying Checksum ... OK
   Loading Kernel Image ... OK

Starting kernel ...

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=131