uClinux Source Code Patch (Once Again) for Dual PC Modem

Dear Actiontec Dual PC Modem Hackers:

Oops!  The GPL source code update that I posted a few weeks ago
had the wrong ".config" file.  Mia-copa! Mia copa!

I've included the correct Linux configuration file under the name
"config.works".  I found that if one built a uClinux kernel with
the v1.2 ".config" file, the kernel would panic as follows:

    Kernel panic: VFS: Unable to mount root fs on 1f:00

I found that I did not need to re-load the bootstrap using USB
after this kernel panic.

Clearly, I somehow wiped out the ".config" file with an ancient
one *before* I made the last uClinux source patch distribution
(i.e., v1.2).  [Someone should fire me!]

The following *new* v1.3 ZIP archive:

   http://www.lightner.net/ActionHack/DualPcModemGplPatch_1.3.zip

...contains a compressed TAR archive with the following files...

    linux/README_Actiontec.txt
    linux/.config
    linux/Makefile
    linux/arch/armnommu/mach-cx821xx/cnxtbsp.c
    linux/arch/armnommu/mach-cx821xx/cnxtflash.c
    linux/arch/armnommu/mach-cx821xx/cnxtflash.h
    linux/arch/armnommu/mach-cx821xx/cnxtirq.c
    linux/arch/armnommu/mach-cx821xx/gpioisr.c
    linux/arch/armnommu/mach-cx861xx/gpio.c
    linux/arch/armnommu/kernel/armksyms.c
    linux/config.works
    linux/include/linux/cnxtflash.h
    linux/include/asm-armnommu/arch-cx821xx/gpio.h
    linux/drivers/mtd/devices/mtdram.c

...which should end up overwriting files rooted at
"/opt/uClinux/linux/".

The text file "linux/README_Actiontec.txt" contains updated
instructions.  The uClinux "config" file is "linux/config.works"
which should be used to overwrite "linux/.config".  I have used
these files with "make oldconfig" to build a stable Actiontec
Dual PC Modem uClinux kernel which runs correctly with Actiontec's
"stock" ROM file system...trust me!  Here's the console log from
loading the new kernel.

    http://lightner.net/ActionHack/DualPcModemBoot_1.3.txt

I connected to my ISP using PPP dial-up right after this.  Really!!

As before, the "Makefile" includes -DACTION_TEC as a global define
(read "kludge"):

   CPPFLAGS := -D__KERNEL__ -I$(HPATH) -DACTION_TEC

The other files are all GPL, and include the needed logic to work
with hardware that Actiontec *actually ships*.

I've once again updated the Wiki HOWTO page...

http://www.embeddedlinuxinterfacing.com/wiki.php/ActiontecGplReleaseHowto

...to include the following instructions:

INSTALLING THE LATEST ACTIONTEC GPL SOURCE RELEASE
--------------------------------------------------

  # su
  # wget -nd \
    ftp://128.121.226.214/pub/dualpcmodem/actiontec_release_031017.tar.gz
  # tar -zxvf actiontec_release_031017.tar.gz
  # usermod -G uClinux lightner
  # newgrp uClinux
  # cd Actiontec_Release/Actiontec_DPC_Base/
  # make

APPLYING PATCH TO /opt/uClinux/linux/
-------------------------------------

  # cd /opt/uCLinux
  # wget -nd http://www.lightner.net/ActionHack/DualPcModemGplPatch_1.3.zip
  # unzip DualPcModemGplPatch_1.3.zip
  # tar -zxf DualPcModemGplPatch_1.3.tar.gz

REBUILDING THE ACTIONTEC UCLINUX KERNEL
---------------------------------------

  % cd /opt/uClinux/linux/
  % newgrp uClinux
  % make clean
  % rm -f linux.bin linuz
  % cp config.works .config
  % make oldconfig
  % make dep
  % make linux.bin
  % gzip -c linux.bin > linuz
  % cp linuz /tftpboot/

Note the "extra" command to overwrite ".config" with "config.works"
before the "make oldconfig".

Per John's request, I've posted a ZIP file with my copies of the modified 
kernel and modified ROM file system:

   http://www.lightner.net/ActionHack/DualPcModemTftp_1.3.zip

Hopefully this should work a bit better.

Best regards,

Bruce

-- 
  Bruce D. Lightner
  Lightner Engineering
  La Jolla, California
  Voice: +1-858-551-4011
  FAX: +1-858-551-0777
  Email: lightner-2huV/[email protected]
  URL: http://www.lightner.net/lightner/bruce/

__
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http://www.embeddedlinuxinterfacing.com/wiki.php/ActiontecDualModem



-- 
  Bruce D. Lightner
  Lightner Engineering
  La Jolla, California
  Voice: +1-858-551-4011
  FAX: +1-858-551-0777
  Email: lightner-2huV/[email protected]
  URL: http://www.lightner.net/lightner/bruce/
__
ActionHack Mailing List - ActionHack-W7/[email protected]
http://www.express.org/mailman/listinfo/actionhack
http://www.embeddedlinuxinterfacing.com/wiki.php/ActiontecDualModem