I'm building U-Boot 2009.01 for the MPC8313 ERDB. The issue I'm having is that when attempting to boot the kernel (or even when doing an "imi" command), I either get a bunch of garbage dumped to the screen or a machine check exception:
=> imi 100000 ## Checking Image at 00100000 ... Legacy image found Image Name: Linux-2.6.28 Created: 2009-01-15 20:55:48 UTC Image Type: Machine check in kernel mode. Caused by (from msr): regs 07f2f7b8 Unknown values in msr NIP: 00001124 XER: 00000000 LR: 07FE318C REGS: 07f2f7b8 TRAP: 0200 DAR: 00000000 MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00 GPR00: 07F2FD08 07F2F8A8 07F2FF54 572553E1 00000000 07F2F8E8 0013E043 FFFFFFFF GPR08: 00000003 572553E1 00000000 00000003 07FF2D86 00000000 07FFC000 00000000 GPR16: 00000000 07FF1930 07FFA238 07FF66D8 07FF2DD0 FFFFFF10 00000000 00000020 GPR24: 07F2F8F4 07FF1CBF 572553E1 FFFFFFFF 00000000 07F30122 07FFD49C 07F2F8E8 Call backtrace: Machine check in kernel mode. Caused by (from msr): regs 07f2f688 Unknown values in msr NIP: 07FB7940 XER: 00000000 LR: 07FB792C REGS: 07f2f688 TRAP: 0200 DAR: 00000000 MSR: 00003002 EE: 0 PR: 0 FP: 1 ME: 1 IR/DR: 00 ... The backtrace never actually gets printed (it seems to hit another exception instead), so I can't use the debugging instructions at http://www.denx.de/wiki/DULG/DecodingUBootCrashDumps . By adding some printf()s, it seems that it's getting into image_print_type(), but the last line: printf ("%s %s %s (%s)\n", arch, os, type, comp); is triggering the crash. Replacing with: printf("%s\n", os); still prints garbage, but I found that if I print the actual address that 'os' points to, and I do a "md" from the command-line, it correctly shows the uimage_os table entry: => md 13e61d 0013e61d: 4c696e75 78006e65 74627364 004e6574 Linux.netbsd.Net ... So there seems to be something going on within printf() or some sub-function that's causing this issue. FYI, replacing with puts(os) didn't help, so the problem seems to be at a fairly low level (not within vsprintf() arg processing). Build details: - Toolchain is CodeSourcery 4.3-50 (CROSS_COMPILE is set to powerpc-linux-gnu-). - This patch: http://www.mail-archive.com/u-boot@lists.denx.de/msg06883.html has been applied to get U-Boot to build properly. - Otherwise, I'm doing a standard "make MPC8313ERDB_NAND_33_config; make". Any ideas on how to debug this are appreciated, thanks! -- Matthew L. Creech _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
