Debian JFFS2 2004-06-02 (Sarge)
Debian JFFS2 2004-06-02 [MD5] is a root file system that is derived from the Debian (Sarge) 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.
UsageDownload the flashfs1 image from the link above and copy it to an ATA flash card. Also copy onto the card, the kernel zImage file for the kernel you want to use.
A kernel command line is required to direct the kernel to mount this file system during start up. Download or create a cmdline.txt file as shown below and copy it to 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.
Create a file named ProgramFlash.ads! on the card.
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 JFFS2 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 linesThese command lines will eliminate the ramdisk partition and direct the kernel to mount the JFFS2 root file system in the third partition. See the bootloader manual for more examples.
On the BitsyX, use this cmdline.txt:
console=ttyS1,38400 rw mtdparts=pxa:256k(adslinux.rom),1536k(zImage),-(flashfs1) root=/dev/mtdblock2 rootfstype=jffs2 noinitrd
On AGX, GCX, and VGX, use this cmdline.txt:console=ttyS0,38400 rw mtdparts=pxa:256k(adslinux.rom),1536k(zImage),-(flashfs1) root=/dev/mtdblock2 rootfstype=jffs2 noinitrd
Register SettingsThese 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)
HistoryThis is the first JFFS2 root file system from Applied Data Systems. It is derived from Debian. It is similar to our Debian Ramdisk root file system but with X11 instead of Microwindows nano-x and with more features, demos, etc.
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Debian JFFS2 2004-06-02 (Sarge)
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Posted - 02 Jun 2004 : 18:19:49
