
30 Jul
2004
30 Jul
'04
3:06 a.m.
I am implementing u-boot 1.0.2 on a custom 860P board and am getting a Software Emulation Exception (as reported by BDI2000) at the first access of RAM after code is copied to RAM.
The SDRAM setup was copied from a working PSOS+ load running on this board. Successful burst reads have been verified with a logic analyzer. I can't easily get access to the logic analyzer for debugging u-boot.
I have defined SRAM to be at 0x0 and I get the same results.
I know I am not using the CVS version of u-boot, I am using what was supplied w/ ELDK 3.0.
I have searched the list and have found cases where SDRAM initialization/burst read configurations have been blamed. Based on success w/ PSOS+, I don't think this is my problem.
Any ideas?
-Tom Laman