Difference between revisions of "DaVinci Initrd 1.0"
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# mkfs.ext2 -F -v -M0 uRamdisk.img | # mkfs.ext2 -F -v -M0 uRamdisk.img | ||
# mount -o loop uRamdisk.img <path to mount point> | # mount -o loop uRamdisk.img <path to mount point> | ||
| − | + | </pre></code> | |
Now copy all the files needed for RAMDISK to the <path to mount point>.. that would be busybox and/or other apps and libs. | Now copy all the files needed for RAMDISK to the <path to mount point>.. that would be busybox and/or other apps and libs. | ||
Revision as of 07:44, 20 June 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:
# install_ramdisk 'tftp 0x2200000 uRamdisk; era 0x2200000 +${filesize};cp.b 0x85000000 0x2200000 ${filesize}'
Save the ramdisk size into an environmental variable:
# setenv ramdisksize 0x${filesize}; saveenv
Update the boot parameters:
# setenv bootargs 'mem=120M console=ttyS0,115200n8 ip=dhcp root=/dev/ram0 rw initrd=0x85000000,8M'
# setenv bootcmd 'cp.b 0x2200000 0x85000000 ${ramdisksize}; bootm'
