From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Roese Date: Thu, 20 May 2010 13:55:01 +0200 Subject: [U-Boot] Watchdog support for ppc4xx In-Reply-To: References: Message-ID: <201005201355.01964.sr@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Hi Mark, On Thursday 20 May 2010 00:27:50 Mark Maestas wrote: > I have a question about watchdog support for PPC_4xx. When I define > CONFIG_WATCHDOG in canyonlands.h, I get an error when building > cpu_init.c. The error code reads: > > {standard input}: Assembler messages: > {standard input}:133: Error: unsupported relocation against tcr > {standard input}:141: Error: unsupported relocation against tcr > {standard input}:146: Error: unsupported relocation against tsr > {standard input}:154: Error: unsupported relocation against tsr > make[1]: *** [cpu_init.o] Error 1 > > Shouldn't this work? It *should*. But unfortunately it doesn't. I just checked this here myself. I get the same error. Seems that the "tcr/tsr" defines need to be converted to upper-case. It would be great if you could send a patch for this. > Also I would like to determine in u-boot if a > reset was caused by the watchdog timer using the TSR WRS field. If it > was reset by the watchdog we will boot into a failsafe partition to > protect against system update errors. > > Has anyone done something like this? Such a detection is not implemented for PPC4xx. Not sure if it's implemented for any other architecture. Cheers, Stefan -- DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de