The ramdisk size need to match the size selected in the kernel config (default is 32MB) and the appropriate file system selected (ext2 in this case). Also since we are trying to build the smallest possible config NFS is unchecked but for practical reason you may want to turn this on for testing. Thanks for the feedback. Best regards, Loc
-----Original Message----- From: meher baba [mailto:[EMAIL PROTECTED] Sent: Wednesday, December 13, 2006 5:53 PM To: Truong, Loc Cc: [email protected] Subject: Re: Using initrd Hi Loc, I am able to boot the kernel with the ramdisk based on the information provided in the document. But if possible I would like to add another section to allow the user to first load the ramdisk into RAM boot the kernel with it and once everything is working fine then flash the ramdisk. I followed these steps to do it: 1. Load the ramdisk into RAM @ location 0x85000000 using the command, tftpboot 0x85000000 ramdisk.gz 2. Provide this information in the bootargs by adding, root=/dev/ram rw initrd=0x85000000,0x$(filesize) 3. Now kernel will boot from the ramdisk loaded at RAM location 0x85000000 and if everything is fine then the ramdisk can be flashed. But my final setup is to load ramdisk using tftp and also the kernel using tftp. Right now I am facing some issues with that. I am working on it and hopefully will be able to get it working soon. One question, Do I need to enable any feature in the kernel to get the root mounted on /dev/ramx? I think with both kernel and ramdisk loaded from tftp it is booting fine but kernel panics while mounting FS giving this message, yaffs: dev is 1048576 name is "ram0" yaffs: Attempting MTD mount on 1.0, "ram0" yaffs: dev is 1048576 name is "ram0" yaffs: Attempting MTD mount on 1.0, "ram0" Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0) Thanks and Regards, Meher On 12/13/06, Truong, Loc <[EMAIL PROTECTED]> wrote: > > > > > You are welcome. Please let us know any comments so we can make the document more useful. > > Best regards, > > Loc > > > > ________________________________ > > From: meher baba [mailto:[EMAIL PROTECTED] > Sent: Wednesday, December 13, 2006 2:37 PM > To: Truong, Loc > Cc: [email protected] > Subject: Re: Using initrd > > > > > Loc, > Thanks for the information. This definetly should get me going. > > Regards, > Meher > > > On 12/13/06, Truong, Loc < [EMAIL PROTECTED]> wrote: > > Please check out a new app note SPRAAH2 at www.ti.com that talks about > flashing initrd to NOR to build a stand alone system as an http server. > Regards, > Loc > > ------------------------------ > > Message: 3 > Date: Wed, 13 Dec 2006 10:59:33 -0600 > From: "meher baba" <[EMAIL PROTECTED]> > Subject: Using initrd > To: [email protected] > Message-ID: > <[EMAIL PROTECTED]> > Content-Type: text/plain; charset="iso-8859-1" > > Hi, > I am new to Linux and I want to use the initrd feature of the > kernel to > load the basic file system. Can some one point to me on how to make a > initrd > image and how to load it using U-boot? > > Thanks and Best Regards, > Meher > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://linux.omap.com/pipermail/davinci-linux-open-source/attachments/20 > 061213/8994d9bc/attachment-0001.htm > > ------------------------------ > > Message: 4 > Date: Wed, 13 Dec 2006 17:08:33 +0000 > From: Andrew Armstrong <[EMAIL PROTECTED] > > Subject: Re: Using initrd > To: meher baba <[EMAIL PROTECTED]> > Cc: [email protected] > Message-ID: <[EMAIL PROTECTED]> > Content-Type: text/plain > > Guys, > > I would like to tag something alond to this request, I myself am in the > position of having a working self-contained NAND setup (boot, kernel and > filesys) and a step-by-step procedure, however, am having difficulty > doing the same in NOR. > > I have the UBOOT and Kernel running as it should, but does anyone know > the best way to get a read-only file system mounted from the remaining > NOR space? Ideally (for production) this would be written to flash at > the same time as the Kernel. I am also considering mounting the file > system directly from the NOR if this is possible. > > Any linux brainboxes with any answers? ;) > > Regards, > > Andrew > > > > On Wed, 2006-12-13 at 10:59 -0600, meher baba wrote: > > Hi, > > I am new to Linux and I want to use the initrd feature of the > > kernel to load the basic file system. Can some one point to me on how > > to make a initrd image and how to load it using U-boot? > > > > Thanks and Best Regards, > > Meher > > _______________________________________________ > > Davinci-linux-open-source mailing list > > [email protected] > > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > *************************************************** > _______________________________________________ > Davinci-linux-open-source mailing list > [email protected] > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source > > -- Regards, Meher _______________________________________________ Davinci-linux-open-source mailing list [email protected] http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
