[U-Boot-Users] Turning on instruction address translation on an 8349 causes processor reset

[Liu Dave-r63238]

[snip]
> 
> I'm working on adding support for a new 8349 board to U-Boot, 
> and the processor resets if I turn on the IR bit in the MSR.  
> This happens in function enable_addr_trans() in start.S.
> 
> enable_addr_trans:
> 	/* enable address translation */
> 	mfmsr	r5
> 	ori	r5, r5, (MSR_IR | MSR_DR)
> 	mtmsr	r5
> 	isync
> 	blr
> 
> with this code, when the "mtmsr" instruction is executed, the 
> processor resets (or hangs - I can't tell).  If I change the 
> 4th line to:
> 
> 	ori	r5, r5, MSR_DR
> 
> It works and U-Boot boots to a command prompt.
> 
> Since the BATs are configured the same for data and 
> instruction, I presume the mapping is correct, but there's 
> something wrong with turning on instruction address 
> translation.  Anyone have any ideas?
> 
The MPC8349EMDS code in wolfgang's git is working well now. No hang.
Please check your code carefully.

-Dave