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Re: [microblaze-uclinux] watchdog

Hello All,
Reading the xps_timebase_wdt datasheet closer... It seems this core is in fact rather useless for use as a timebase (unless you want a 1-minute timebase or you don't want to use the watch-dog or only use it in a complicated way). As a watch-dog timer alone I guess it's usable and it would be nice to have support for it in booth u-boot and linux. Triggering in the simple boot loader is not a problem, as it can't be configured to be active from cold boot, but has to be enabled first in software. 

Finn

Finn Stadel Nielsen skrev:

Hi Michael and Guillaume,
Might be a good idea to switch from using a xps_timer to using an xps_timebase_wdt (which resembles the one that exists in the PowerPC CPU's) and then add support for that cores's watch-dog, which I think is the one Guillaume is using. I know the xps_timer has been used since the dawn of time, but it could be an alternative config and a nice addition of watch-dog functionality. I don't know if the simple boot loader can finish executing before a watch-dog timeout, if not it could trigger it or else people would just have to live with a watch-dog that is not enabled from cold start .. (daaangerous... ;-) ). 

Finn
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Michal Simek skrev:


Hi,


Hello,

Sure here is my log :


make[2]: Leaving directory
`/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/common' 

UNDEF_SYM=`microblaze-uclinux-objdump -x lib_generic/libgeneric.a
board/petalogix/microblaze-auto/libmicroblaze-auto.a
cpu/microblaze/libmicroblaze.a lib_microblaze/libmicroblaze.a
fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a
fs/jffs2/libjffs2.a fs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a
drivers/libdrivers.a drivers/nand/libnand.a
drivers/nand_legacy/libnand_legacy.a drivers/sk98lin/libsk98lin.a
post/libpost.a post/cpu/libcpu.a common/libcommon.a  |sed  -n -e
's/.*\(__u_boot_cmd_.*\)/-u\1/p'|sort|uniq`;\
        microblaze-uclinux-ld -Bstatic -T
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/board/petalogix/microblaze-auto/u-boot.lds 
-Ttext 0x9ffc0000  $UNDEF_SYM cpu/microblaze/start.o \
                --start-group lib_generic/libgeneric.a
board/petalogix/microblaze-auto/libmicroblaze-auto.a
cpu/microblaze/libmicroblaze.a lib_microblaze/libmicroblaze.a
fs/cramfs/libcramfs.a fs/fat/libfat.a fs/fdos/libfdos.a
fs/jffs2/libjffs2.afs/reiserfs/libreiserfs.a fs/ext2/libext2fs.a
net/libnet.a disk/libdisk.a rtc/librtc.a dtt/libdtt.a
drivers/libdrivers.a drivers/nand/libnand.a
drivers/nand_legacy/libnand_legacy.a drivers/sk98lin/libsk98lin.a
post/libpost.a post/cpu/libcpu.a common/libcommon.a  --end-group -L
/home/utilinux/work/petalinux_test2/trunk/tools/linux-i386/microblaze-uclinux-tools/bin/../lib/gcc/microblaze-uclinux/3.4.1/bs/m 
-lgcc \
                -Map u-boot.map -o u-boot
lib_microblaze/libmicroblaze.a(board.o): In function `board_init':
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/lib_microblaze/board.c(.text+0xbc): 
undefined reference to `watchdog_reset'
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/lib_microblaze/board.c:241: 
undefined reference to `watchdog_reset'
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/lib_microblaze/board.c:254: 
undefined reference to `watchdog_reset'
net/libnet.a(net.o): In function `NetLoop':
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/net/net.c(.text+0x14fc): 
undefined reference to `watchdog_reset'
common/libcommon.a(main.o): In function `readline':
/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/common/main.c(.text+0x190): 
undefined reference to `watchdog_reset'
common/libcommon.a(cmd_bootm.o)(.text+0x6c4):/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot/common/cmd_bootm.c: 
more undefined references to `watchdog_reset' follow
make[1]: *** [u-boot] Error 1
make[1]: Leaving directory
`/home/utilinux/work/petalinux_test2/trunk/software/petalinux-dist/u-boot' 
make: *** [u-boot] Error 2
you can see that you miss reference to watchdog_reset function. I haven't play with any watchdog but I am afraid that there is missing watchdog code in u-boot because none haven't needed it and programmed it. You can look if someone from 
powerpc guys did any work around but I haven't seen it.
If you want to use it for real project you need to implemented it yourself or 
you can look at petalogix.com site.

Thanks,
Michal



Regards

*_ZODIAC DATA SYSTEMS SAS_*
AEROSAFETY & TECHNOLOGY     logo
*Guillaume Gastebois*
Hardware/Firmware Engineer
2 rue de Caen - 14740 Bretteville l'orgueilleuse - France
Tel: +33 2 31 29 4888  - Fax: +33 2 31 80 6549
guillaume.gastebois@xxxxxxxxxxxxxxxxxxx
<mailto:guillaume.gastebois@xxxxxxxxxxxxxxxxxxx>
http://www.zodiacaerospace.com <http://www.zodiacaerospace.com/>







*Michal Simek <michal.simek@xxxxxxxxxxxxx>*
Envoyé par : owner-microblaze-uclinux@xxxxxxxxxxxxxx

20/03/2009 10:31
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    Re: [microblaze-uclinux] watchdog






Hi,



Hello,
I try to use a watchdog on ML505. I run from ref design ll_temac an add a watchdog. The bitstream generation process is ok, but adding watchdog capabilities to kernel gives me WATCHDOG_RESET() unknow function during 
u-boot compilation !!

What did I wrong ?

Can you post your log with that fault?

Thanks,
Michal



*_ZODIAC DATA SYSTEMS SAS_*
AEROSAFETY & TECHNOLOGY         logo
*Guillaume Gastebois*
Hardware/Firmware Engineer
2 rue de Caen - 14740 Bretteville l'orgueilleuse - France
Tel: +33 2 31 29 4888  - Fax: +33 2 31 80 6549
guillaume.gastebois@xxxxxxxxxxxxxxxxxxx
<mailto:guillaume.gastebois@xxxxxxxxxxxxxxxxxxx>
http://www.zodiacaerospace.com <http://www.zodiacaerospace.com/>





--
Michal Simek, Ing. (M.Eng)
PetaLogix - Linux Solutions for a Reconfigurable World
w: www.petalogix.com p: +61-7-30090663,+42-0-721842854 f: +61-7-30090663 
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Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.21/2014 - Release Date: 03/20/09 06:59:00 



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