2008/11/11 David Chan <[EMAIL PROTECTED]> > > > for nand flash you'd better to use yaff2. If you really decide to use jffs2 > please modify the uboot to enable ecc check. > That's because ecc is not enabled by uboot. Then kernel give a ecc check. > While you write file.jffs2 to the nand, you will meet bad block and bit > reverse.All leads to ecc error. > My suggestion is to use yaffs2 or write mtd under linux environment. >
Thanks for ur reply.. I downloaded yafss2 tool to make yaffs2 image ... Now how can i write this image to nand (AT which memory location ? is it 0x460000?) i have copied yaffs2 image to 0x80700000 location .. and how can i set bootargs for that? is it setenv bootargs mem=120M console=ttyS0,115200n8 root=/dev/mtdblock3 rw init=/bin/sh noatime rootfstype=yaffs2 ip=off Nd finally u told "or write mtd under linux environment." Can u please give some pointer to this Thanks once again Deepak > > > David > >> Message: 3 >> Date: Tue, 11 Nov 2008 17:32:41 +0530 >> From: "Deepak Mundra" <[EMAIL PROTECTED]> >> Subject: Help in writiing JFFS2 Filesystem into NAND /Uboot >> To: "davinci-linux-open-source@linux.davincidsp.com" >> <davinci-linux-open-source@linux.davincidsp.com> >> Message-ID: >> <[EMAIL PROTECTED]> >> Content-Type: text/plain; charset="iso-8859-1" >> >> >> Hi, >> >> Has any one tried writing jfss2 filesystem on to nand using uboot ??? >> >> I am using following stem but MTD->READ is returning error >> >> >> 1]nand erase 0x460000 sizeof_filesystem_image >> >> 2]transfer jffs2 filsystem image to 0x80700000 >> >> 3]nand write 0x80700000 0x460000 sizeof_filesystem_image >> >> 4]In kernel i set boot args as follow >> >> >> setenv bootargs mem=120M console=ttyS0,115200n8 root=/dev/mtdblock3 rw >> init=/bin/sh noatime rootfstype=jffs2 >> setenv bootcmd 'nboot 0x80700000 0 0x60000;bootm' >> >> ANd while booting i am getting errors like MTD->READ, ECC error etc >> >> >> Thanks >> Deepak >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> http://linux.omap.com/pipermail/davinci-linux-open-source/attachments/20081111/7673cb90/attachment-0001.htm >> >> ------------------------------ >> >> Message: 4 >> Date: Tue, 11 Nov 2008 18:27:50 +0530 >> From: "Prabhaharan R-TLS,Chennai" <[EMAIL PROTECTED]> >> Subject: Davinci DMS355 - Video Encoder >> To: "Stephen Berry" <[EMAIL PROTECTED]>, "Karicheri, Muralidharan" >> <[EMAIL PROTECTED]> >> Cc: davinci-linux-open-source >> <davinci-linux-open-source@linux.davincidsp.com> >> Message-ID: >> < >> [EMAIL PROTECTED]> >> >> Content-Type: text/plain; charset="us-ascii" >> >> >> Hello Stephen and Murali, >> >> >> >> Currently I am working on the Video encoder driver for Davinci DMS 355. >> The driver is being implemented using the Montavista TI Linux code. As >> per the existing encoder driver architecture, we can add the customized >> new driver to the drivers/media folder and we have set the encoder >> output name in the driver as well in the boot arguments. I have taken >> the THS8200_encoder.c as reference. Since, the encoder that I am going >> to use is through I2c, I have selected the ths8200_encoder.c as base. >> >> >> >> I have set the encoder output as KCDA210. Also, I have made changes in >> the davinci_platform.c for VPBE module settings. In the boot arguments, >> when I give the encoder manager output name as KCDA210, the system is >> booting and working fine. If, I make any changes in the encoder file >> that I have created, then the system is not booting. The system gets >> hanged during the kernel un-compression. If I revert those changes back, >> then the system is booting properly. >> >> >> >> For example, err |= i2c_write(); >> >> >> >> If I make the change as err = i2c_write();, instead of ORing the output, >> then the system gets hanged during the boot. >> >> >> >> I am not sure that the hanging is because of this change. But, if I >> revert these changes back, the system works fine. >> >> >> >> Boot arguments that I am using, >> >> setenv bootargs console=ttyS0,115200n8 noinitrd rw >> ip=10.100.135.51:10.100.135.126:10.100.135.1:255.255.255.0:::off >> root=/dev/nfs nfsroot=$(nfshost):$(rootpath),nolock mem=116M >> video=davincifb:vid0=720x576x16,2500K:vid1=720x576x16,2500K:osd0=720x576 >> x16,2025K davinci_enc_mngr.ch0_output=KCDA210 >> davinci_enc_mngr.ch0_mode=$(videostd) >> >> >> >> If you faced the same issue, please provide your valuable comments. >> >> >> >> Thanks a lot in advance. >> >> >> >> Regards, >> >> Prabha. >> >> >> >> DISCLAIMER: >> >> ----------------------------------------------------------------------------------------------------------------------- >> >> The contents of this e-mail and any attachment(s) are confidential and >> intended for the named recipient(s) only. >> It shall not attach any liability on the originator or HCL or its >> affiliates. Any views or opinions presented in >> this email are solely those of the author and may not necessarily reflect >> the opinions of HCL or its affiliates. >> Any form of reproduction, dissemination, copying, disclosure, >> modification, distribution and / or publication of >> this message without the prior written consent of the author of this >> e-mail is strictly prohibited. If you have >> received this email in error please delete it and notify the sender >> immediately. Before opening any mail and >> attachments please check them for viruses and defect. >> >> >> ----------------------------------------------------------------------------------------------------------------------- >> -------------- next part -------------- >> An HTML attachment was scrubbed... >> URL: >> http://linux.omap.com/pipermail/davinci-linux-open-source/attachments/20081111/f8185f59/attachment.htm >> >> ------------------------------ >> >> _______________________________________________ >> Davinci-linux-open-source mailing list >> Davinci-linux-open-source@linux.davincidsp.com >> http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source >> >> >> End of Davinci-linux-open-source Digest, Vol 35, Issue 50 >> ********************************************************* >> > > > > -- > David > > Manager, Business Development > Embedio. Inc. > +86 13581953152 > > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > >
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