I do not know specifically about the hardware you are working with, but based on general boot processes I know from other flash-based embedded platforms, the clue you may need is to use the uncompressed and non-bootstrapped image for external boot. If you upload the compressed and bootstrapped image (aka what would go in flash) then the bootstrap is going to begin uncompressing the actual image on top of itself and nuke into failure (or, not be able to find the data to uncompress and hang). If your uploaded/external image is the one that the flash bootstrap would uncompress into RAM then it boots up just like it would have from flash. So you probably need to find the uncompressed and non-bootstrapped code image in the tree and use that instead of the one designed for flash, and your load address may already be correct (it was just overwriting itself or otherwise crashing).
I'm sure someone else that knows the exact hardware you are asking about will chime in with specifics, but I thought in the mean time this clue might get you on the right track to figuring it out for yourself. -T On Thu, Oct 8, 2009 at 11:56, Joerg Eilers <[email protected]>wrote: > Hi all, > and please forgive me, if it is the wrong place to ask. > > In rev 17856 "blogic" (thanks for your work on amazon/danube) added the > possibility to upload an u-boot image via uart, if got it right. I really > would like to understand how to use it, but obviously am too dull ;-). > I have an "Easybox A801" (ARV452CQW-B-LF-IR from Arcadyan) with an BRN > bootloader and thought this feature might help me to get linux/openwrt > running. So I built openwrt and got the .asc-file. The first question: Where > (address) do I have to load it to? I tried the default given by BRN > (0x80002000) but it doesn't seem to work. > Anybody able (and willing) to give me a helping hand? > > Thank you very much! > > Regards > > Joerg > > -- > Jetzt kostenlos herunterladen: Internet Explorer 8 und Mozilla Firefox 3.5 > - > sicherer, schneller und einfacher! http://portal.gmx.net/de/go/atbrowser > > -- > GRATIS für alle GMX-Mitglieder: Die maxdome Movie-FLAT! > Jetzt freischalten unter http://portal.gmx.net/de/go/maxdome01 > _______________________________________________ > openwrt-devel mailing list > [email protected] > https://lists.openwrt.org/mailman/listinfo/openwrt-devel >
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