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jhess
135 Posts |
Posted - 02 Feb 2006 : 12:55:09
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Debian CRAMFS 2006-01-27 (Etch) Debian CRAMFS 2006-01-27 is a root file system that is derived from the Debian (Etch) distribution and is trimmed down to fit (compressed) in a partition in on-board flash as small as 15MB. This size can be reduced further by removing the demo programs and associated data that are included in this distribution.
Debian CRAMFS-flashfs2 2006-01-27 is a second partition, in JFFS2 format, used for persistant storage of selected files. See the README.txt for the 2006-01-27 release for information on using this JFFS2 partition to store persistant changes using 'altshadow'.
The following files are included in this release: bitsyXb/hw_config.txt bitsyXb/tty_config.txt bitsyXb/root_config.txt bitsyXb/start.txt sphere/hw_config.txt sphere/tty_config.txt sphere/root_config.txt sphere/start.txt vix/hw_config.txt vix/tty_config.txt vix/root_config.txt vix/start.txt flashfs2 MD5SUMS register.txt register_vgx.txt cramfs.img register_agxepson.txt cmdline.txt README.txt cmdline_bitsyx.txt flashfs2-128k debian-cramfs.tar.gz 700050-4104g.partno
Usage Download the cramfs.img and flashfs2 images from the link above and copy them to an ATA flash card. Also copy onto the card, the kernel zImage file for the kernel you want to use.
For PXA systems such as the BitsyX, AGX, GCX, and VGX, which do not use the u-boot bootloader, a kernel command line is required to direct the kernel to mount this file system during start up. Download a cmdline.txt file as shown below and copy it to the card, then create a file named ProgramFlash.ads! on the card. A register.txt file is recommended for best performace of the video demonstration programs included in this distribution. Download the register.txt file for your system's frame buffer as shown below and copy it to the card.
For systems such as the BitsyXb, Sphere, and VIX, which use the u-boot bootloader, a set of u-boot configuration files is needed. See this topic for all the available files, download the appropriate files and copy them to the card. Note that you will need at a minimum start.txt, cramfs root_config.txt, and one of the console configuration files.
On your ADS System, set the first dip switch to ON (Flash Update Mode), insert the card, and boot your system. The bootloader will erase everything in on-board flash (except the bootloader itself) and program (copy) the images on the ATA card to on-board flash. The kernel will be loaded from on-board flash and the CRAMFS root file system will be mounted when Linux starts.
Delete the ProgramFlash.ads! file and remove the ATA flash card to prevent an unnecessary erase/reprogramming of on-board flash the next time you reboot. See the bootloader manual for more information on the dip switch settings and boot options.
Command lines These command lines will eliminate the ramdisk partition and direct the kernel to mount the CRAMFS root file system in the third partition. See the bootloader manual for more examples.
On the BitsyX, use this cmdline.txt
On AGX, GCX, and VGX, use this cmdline.txt:
Register Settings These register.txt files will change the default 8bpp color depth to 16bpp. The bootloader reads the register.txt file and changes the registers before the kernel starts. Download the one for the frame buffer that is used by your board. register.txt for PXA frame buffer and LQ64343 LCD (BitsyX, GCX, or AGX without an Epson chip)
register.txt for Epson frame buffer and LQ64343 LCD (AGX with an Epson chip)
register.txt for SM501 frame buffer and LCD or CRT (VGX)
Tar Archive Here is a tar archive of this file system.
Verification MD5SUMS provides MD5 checksums for all files in this release.
History This release of our CRAMFS root file system is derived from Debian and supersedes our previous 2005-10-25 release.
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