Hi. I got a custom MPC823E board, and I want to use a LCD display with Linux. So I removed the HIOX specific line in lcd823.c, and added the LCD frame buffer to the kernel. But I got a problem; the kernel crashes about 3 seconds after bash gets started, with this message:
init-2.00# Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel panic: Kernel Mode Software FPU Emulation Kernel stack overflow in process c02f8000, r1=c02f82d0 NIP: C0054D20 XER: 8000BC7F LR: C0054D20 REGS: c02f8220 TRAP: 1000 MSR: 00001032 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 11 Machine check in kernel mode. Caused by (from msr): regs c006ff00 Machine check signal - probably due to mm fault with mmu off NIP: 00001230 XER: A000BC7F LR: C0002544 REGS: c006ff00 TRAP: 0200 MSR: 00001000 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00 Machine check in kernel mode. Caused by (from msr): Can anyone tell me what is wrong, and how to solve this? I'm using the kernel from mvista and I have enabled Math Emulation. The kernel runs fine without the LCD driver. I have used the LCD driver on a PRXL board without any problems. --- Kim Jorgensen ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
