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| Linuxroot file system load failure http://www.at91.com/samphpbb/viewtopic.php?f=9&t=20706 |
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| Author: | pivodog [ Thu Mar 01, 2012 12:27 am ] |
| Post subject: | Linuxroot file system load failure |
I am trying load a file system ram disk and it keeps failing with the error: RAMDISK gzip image found at block 0 RAMDISK: incomplete write (7993 != 32768) I am creating the ram disk via the following commands: #!/bin/sh dd if=/dev/zero of=ramdisk/ramdisk bs=1k count=32768 mke2fs -F -v -m0 ramdisk/ramdisk sudo mount -o loop ramdisk/ramdisk /mnt/ramdisk sudo cp -av tmp/* /mnt/ramdisk /root/images sudo umount /mnt/ramdisk cd ramdisk gzip -9v ramdisk I'm using SAM-BA to transfer the file to memory and then UBOOT to save into flash. Linux kernel 2.6.36 AT91SAM9261 uP I using a shareed drive between my linux distro and the XP machine. Both are VMs. Does anybody have any suggestions? I have tried it on a 8MB file image and it loads correctly. 
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| Author: | CptTitanic [ Thu Mar 01, 2012 4:34 am ] |
| Post subject: | Re: Linuxroot file system load failure |
Do you have enough free RAM to do this? Why use SAM-BA and uBoot, both are capable of writing flash independently, and TFTP could be used to send data to uBoot directly? Be cautious about the memory regions used to store/park the data, and whether you reset via AT91Bootstrap to get to uBoot after exiting SAM-BA, and that reconfigures the processor, bus, and SDRAM speeds/settings. Try doing a read-back test of the data you have written, and confirm it made the round trip without getting corrupted. |
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| Author: | pivodog [ Thu Mar 01, 2012 4:11 pm ] |
| Post subject: | Re: Linuxroot file system load failure |
unfortunately, I don't have a Ethernet port on this device. I only have the debug serial port and a USB port |
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| Author: | CptTitanic [ Thu Mar 01, 2012 4:45 pm ] |
| Post subject: | Re: Linuxroot file system load failure |
Doesn't uBoot support xmodem? Have SAM-BA write data directly into NAND. |
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| Author: | pivodog [ Fri Mar 02, 2012 4:25 pm ] |
| Post subject: | Re: Linuxroot file system load failure |
transferring a ~7MB file via serial @ 115200 would take forever thats why the designers are using USB/SAMBA. I was able to get around the error by changing the default RAM disk size to 40960 from the default 4K but, now I'm dealing with a Kernel panic - not syncing error while mounting the file system. |
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| Author: | CptTitanic [ Fri Mar 02, 2012 6:37 pm ] |
| Post subject: | Re: Linuxroot file system load failure |
No doubt it would take a while, but why do you even need uBoot to transfer this to the board? Does your board have a JTAG, or did they leave that off too? Currently you're fighting symtoms, and trying to debug things, SAM-BA code is running in a totally different environment than AT91BootStrap & uBoot. The symtoms suggest the data is corrupt, or not in the right format/wrapping. Have you written the image to NAND and verified it in SAM-BA? |
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