From: Frank A. <ft...@ya...> - 2011-03-25 01:45:48
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On 3/24/2011 9:30 PM, dtran11 wrote: > > have you tried erasing the uboot environment partition on flash? > > in uboot prompt type: > > nand erase 240000 20000 > Yes, I've tried erasing flash. I've tried multiple boards, multiple mmc cards, various flavors of mlo and a wide variety of versions of u-boot, all in an endless series of combinations. I can definitively say that the problem is related to the OMAP CPU revision and the multiblock read code. > > Frank Agius wrote: >> >> I have various vintages of overo's, some purchased fairly recently and >> others more than 18 months old. I've been systematically upgrading >> u-boot on all boards to u-boot-2010-.12. On the newer boards, the >> process has gone smoothly, but on the older boards (all with OMAP >> revision 2.1), u-boot fails to load as follows: >> >> Hiy key to stop autoboot: 0 >> reading boot.scr >> >> 212 bytes read >> Running bootscript from mmc ... >> ## Executing script at 82000000 >> Testing >> reading uImage >> mmc_send_cmd: timedout waiting for cmddis! >> mmc fail to send stop cmd >> mmc_send_cmd: timedout waiting for cmddis! >> Invalid FAT entry >> >> 743424 bytes read >> Wrong Image Format for bootm command >> ERROR: can't get kernel image! >> >> I did some debug and found that the problem was introduced into >> u-boot-2010.12.rc3 with a checkin that added multiblock read support to >> the mmc driver. According to the TI docs, multiple block read transfer >> does not work correctly in CPU revisions 2.1 and earlier (TI advisory >> 2.1.1.128). I think that a potential fix is the check the cpu revision >> in mmc code that does the block read and only attempt multiblock if the >> revision is> 2.1. >> >> frank >> >> >> ------------------------------------------------------------------------------ >> Enable your software for Intel(R) Active Management Technology to meet the >> growing manageability and security demands of your customers. Businesses >> are taking advantage of Intel(R) vPro (TM) technology - will your software >> be a part of the solution? Download the Intel(R) Manageability Checker >> today! http://p.sf.net/sfu/intel-dev2devmar >> _______________________________________________ >> gumstix-users mailing list >> gum...@li... >> https://lists.sourceforge.net/lists/listinfo/gumstix-users >> >> > |