Hi All, I'm running a V2Pro-based development board, and I'm working on a linux 2.6.15 port. Currently, the board hangs in the early_init function. Specifically, at the following line: memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
This memset_io() call eventually calls memset() (from arch/ppc/lib/string.S) to zero the region of memory. Using a BDI2000, I'm able to step through the assembly and see that within memset, it enters a two-instruction loop where it is writing zeros to consecutive memory locations. Everything is going fine, but after 10 or 20 iterations of the loop (it's not consistent), everything blows up. GDB reports the following: ------------------------------ (gdb) stepi Program received signal SIG110, Real-time event 110. 0xc000b3e8 in memset () (gdb) ------------------------------ The BDI2000 reports the following: ------------------------------ *** MMU: address translation for 0xC000B3E8 failed *** MMU: address translation for 0xC000B3E4 failed *** MMU: address translation for 0xC000B3E8 failed *** MMU: address translation for 0xC000B3E4 failed *** MMU: address translation for 0xC000B3B0 failed *** MMU: address translation for 0xDEADBEEF failed *** MMU: address translation for 0xDEADBEEB failed *** MMU: address translation for 0xDEADBEEF failed *** MMU: address translation for 0xDEADBEEB failed *** MMU: address translation for 0x00000000 failed *** MMU: address translation for 0xDEADBEEF failed *** MMU: address translation for 0xDEADBEEB failed *** MMU: address translation for 0xDEADBEEF failed *** MMU: address translation for 0xDEADBEEB failed *** MMU: address translation for 0x00000000 failed ------------------------------ Here is my BDI2000 configuration file: ------------------------------ [INIT] [TARGET] JTAGCLOCK 0 ;use 16 MHz JTAG clock CPUTYPE 405 ;the used target CPU type BDIMODE AGENT ;the BDI working mode (LOADONLY | AGENT) BREAKMODE HARD ;SOFT or HARD, HARD uses PPC hardware breakpoint STEPMODE HWBP ;JTAG or HWBP, HWPB uses one or two hardware breakpoints MMU XLAT 0xC0000000 ;enable virtual address mode PTBASE 0x000000f0 ;address where kernel/user stores pointer to page table STARTUP RESET [HOST] IP 192.9.200.213 FILE ppcboot.bin FORMAT BIN 0xfff80000 ;0x200000 START 0xfff80000 ; 0x200000 LOAD MANUAL ;load code MANUAL or AUTO after reset DEBUGPORT 2001 DUMP dump.bin ;Linux: dump.bin must already exist and public writable [FLASH] WORKSPACE 0xffffd000 CHIPTYPE STRATAX16 BUSWIDTH 16 CHIPSIZE 0x400000 [REGS] IDCR1 0x010 0x011 ;MEMCFGADR and MEMCFGDATA IDCR2 0x012 0x013 ;EBCCFGADR and EBCCFGDATA IDCR3 0x014 0x015 ;KIAR and KIDR FILE reg405gp.def ------------------------------ Any ideas would be appreciated. Regards, Chris Dumoulin
