Sometimes while uncompressing the kernel image (gunzip), an illegal instruction program exception occurs. U-boot displays the registers, reboots, and usually doesn't have any problems loading the kernel. I'm having a hard time debugging the cause since the problem is intermittent. Has anyone experienced this? Is it due to a problem with the RAM? Any suggestions are greatly appreciated. Thanks, Farrah.
Hit any key to stop autoboot: 0 ## Booting image at 00400000 ... Image Name: Linux-2.6.15 daqNet H11764D Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 739864 Bytes = 722.5 kB Load Address: 00000000 Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... NIP: 07FEB04C XER: 20000000 LR: 07FEB9E0 REGS8 MSR: 00021000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
GPR00: 00000000 07FA4FF0 000038B0 07FCE854 00000013 00000013 00000000 07FA4FF8 GPR08: FFFFFFFA 07FA5100 07FA4FF8 00000002 07FA50B4 00004340 08004800 07FA503C GPR16: FFFFFFFF 00000000 00000006 000B4A0D 00000000 00000002 000B4A06 00000006 GPR24: 00000007 00400052 00000005 00000000 00000000 07FA5F58 080048B0 07FA5AE0 ** Illegal Instruction ** Call backtrace: Program Check Exception