Hi Rob, On Tue, 5 Nov 2013 10:22:24 -0600, Rob Herring <[email protected]> wrote:
> On Thu, Oct 24, 2013 at 4:37 PM, Andrew Ruder <[email protected]> wrote: > > On Wed, Oct 23, 2013 at 11:41:45AM -0600, Joe Kulikauskas wrote: (putting back more context) > >> v2013.10-rc1 (and after) has a patch ( > >> http://lists.denx.de/pipermail/u-boot/2013-June/156298.html) > >> which sets up the abort stack before relocation. However, what > >> I am seeing: IRQ_STACK_START_IN > >> is in flash at that time, so this write fails. Hmm... Which one exactly is "this write"? The instructions below are reads, not writes. > >> interrupt_init: > >> FF0A0FA8 e59f3010 LDR R3,ff0a0fc0 > >> (ff0a0050=IRQ_STACK_START_IN) > > > >> Before this patch, abort stack setup was done after relocation, so > >> target location is in RAM and writeable. > > > >> interrupt_init: > >> 9FFB4020 e59f3010 LDR R3,9ffb4038 > >> (9ffb3054=IRQ_STACK_START_IN) > > > >> If I revert that patch, I don't see that problem. That problem only happens when there actually is an abort before relocation, right? > > FWIW, I am working on a PXA270 target, and have had to revert this patch > > as well. I hadn't gotten around to tracking down where and why I was > > crashing though so hadn't emailed in a bug report yet. Now seeing as > > there's someone else now seeing it too I thought I would chime in with > > a "me too". > > > > Rob: CC'd you since you were the author and might have some insight. > > Full email in entirety below. > > Other than doing stack setup in a completely different way by setting > the mode in the CPSR and setting up SP_irq and SP_abt directly, I > don't see an easy fix. So we should revert this change. It works for > me because I run from RAM before relocation. > > Albert or Tom, can you please revert commit 0f5141e9c57e96de11642a. I'm ok with reverting in the ARM repo (I'll PR to mainline after I get Atmel and IMX in), as soon as I get a clear understanding of the exact issue. > Rob Amicalement, -- Albert. _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
