On Wednesday 05 November 2008, k b wrote: > I'm trying to add a interrupt handler. My board is based of taishan 440gx. > I'm using external irq0. the moment i add the interrupt i get > > Bus Fault @ 0x00000000, fixup 0x00000000 > Machine check in kernel mode. > Caused by (from msr): regs 0c21ec28 Unknown values in msr > NIP: 00000000 XER: 20000000 LR: 0C345878 REGS: 0c21ec28 TRAP: 0200 DAR: > 00000000 MSR: 00000000 EE: 0 PR: 0 FP: 0 ME: 0 IR/DR: 00 > > GPR00: 00000000 0C21ED18 7FFFFFFF 00000000 0E37EBDB 0C37EBDC 0C361D48 > 20600000 GPR08: 00000100 0C37EBDC 0C361D44 27BC86AE 0C21EC20 00200000 > 0C364F00 0C363000 GPR16: 00000000 00000001 00000000 00000001 00001000 > 0C21ED58 00000000 0C32519C GPR24: 0C325EC8 FFFFFFF7 0C34586C 00000017 > 0C362248 0C21EF2C 0C366538 80000000 Call backtrace: > machine check > > this happens in > ppc4xx/interrupt.c function irq_install_handler > the moment a call to > mtdcr (uicer, mfdcr (uicer) | (0x80000000>> i));
This doesn't seem to be the latest code. Which U-Boot version are you using? I re-structured the 4xx interrupt handling a few months ago and now it's much "simpler". > FYI CONFIG_440 is set and so is CONFIG_4xx and this is not running in > compatibility mode. > > i checked and rechecked the polarity, trigger register setting they all > seem to be correct. Those are my first thoughts as well. > Any pointers would be appreciated. Again, switch to the current U-Boot version and give it another try. Best regards, 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: [EMAIL PROTECTED] ===================================================================== _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
