Date: Sat, 16 Apr 2016 13:21:53 +0100 From: Craig Butler <craig001@lerwick.hopto.org> To: freebsd-arm <freebsd-arm@freebsd.org> Subject: boot fail when bootelf kernel but not when using the ubldr Message-ID: <57122E61.1000409@lerwick.hopto.org>
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Hello Folks
Little frustrating fail. I have a kernel for the cm-t335 board
thatworks fine under uboot -> ubldr -> nfs'ing the kernel in and booting.
It fails when u-boot -> nand read into ram -> bootelf the kernel
directly. Annoyingly it does not drop into the debugger
CM-T335 # bootelf ${kloadaddr}
## Starting application at 0xc0200100 ...
KDB: debugger backends: ddb
KDB: current backend: ddb
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FreeBSD 10.3-RELEASE #20: Sat Apr 16 11:41:14 BST 2016
root@xxxxx arm
FreeBSD clang version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512
CPU: Cortex A8-r3 rev 2 (Cortex-A core)
Supported features: ARM_ISA THUMB2 JAZELLE THUMBEE ARMv4 Security_Ext
WB disabled EABT branch prediction enabled
LoUU:2 LoC:3 LoUIS:1
Cache level 1:
32KB/64B 4-way data cache WT WB Read-Alloc
32KB/64B 4-way instruction cache Read-Alloc
Cache level 2:
256KB/64B 8-way unified cache WT WB Read-Alloc Write-Alloc
hangs here :/
It doesn't do this under 10.1-RELEASE src, but is doing it under
10.3-RELEASE src
any clues on what might be wrong, or how to debug further ?
Thanks
Craig
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