Please note that User Registration has been temporarily disabled due to a recent increase in automated registrations. If anyone needs an account, please request one here: RequestAccount. Thanks for your patience!--Wmat (talk)
Please email User:Wmat if you experience any issues with the Request Account form.

Difference between revisions of "DaVinci Initrd 1.0"

From eLinux.org
Jump to: navigation, search
(fixing wrapping)
Line 16: Line 16:
 
Copy the data into RAM then flash:
 
Copy the data into RAM then flash:
  
<code><pre>
+
 
UBOOT# install_ramdisk 'tftp 0x2200000 uRamdisk; era 0x2200000 +${filesize};cp.b 0x85000000 0x2200000 ${filesize}'
+
UBOOT# install_ramdisk 'tftp 0x2200000 uRamdisk; era 0x2200000 +${filesize};cp.b 0x85000000 0x2200000  
</pre></code>
+
${filesize}'
 +
 
 
Save the ramdisk size into an environmental variable:
 
Save the ramdisk size into an environmental variable:
  

Revision as of 14:50, 4 July 2007

Create initrd Procedure (note change count to your required filesystem size):

> dd if=/dev/zero of=uRamdisk.img bs=1k count=20480
> mkfs.ext2 -F -v -M0 uRamdisk.img
> mount -o loop uRamdisk.img <path to mount point>

Now copy all the files needed for RAMDISK to the <path to mount point>.. that would be busybox and/or other apps and libs.

> umount <path to mount point>
> gzip -9 < uRamdisk.img > uRamdisk

Installing the Ramdisk (/tftpboot/uRamdisk) via u-boot

Copy the data into RAM then flash:


UBOOT# install_ramdisk 'tftp 0x2200000 uRamdisk; era 0x2200000 +${filesize};cp.b 0x85000000 0x2200000 
${filesize}'

Save the ramdisk size into an environmental variable:

UBOOT# setenv ramdisksize 0x${filesize}; saveenv

Update the boot parameters:

UBOOT# setenv bootargs 'mem=120M console=ttyS0,115200n8 ip=dhcp root=/dev/ram0 rw initrd=0x85000000,8M'
UBOOT# setenv bootcmd 'cp.b 0x2200000 0x85000000 ${ramdisksize}; bootm'