I have built a PXA250 board around the form factor reference design from Intel. So far, I have been able to (1) get a JTAG connection using OCDemon and Wiggler, and (2) flash (and verify the flash) a u-boot boot-loader using openwince and the Wiggler.
I hate to say I'm stuck, but I have not been able to get the PXA250 to do more than 1 step out of Reset-- either from JTAG-reset or hard-reset-- which is a Branch from 0x00000000 to 0x00000060. When I "Reset and Go" from OCDemon I get the error "run_target_from_pc: target bus error (20:11)" which I cannot interpret. This is before initializing anything-- i.e. SDRAM, etc.
I would appreciate any clues or ideas, and I have attached some (possibly) relevant information.
A. Board info PXA250 Stepping B1 400MHz 64MB 100MHz SDRAM 4MB Strataflash SDCard Power supply
B. OCDemon data after hard-reset PC: 00000000 SP: FFFFFFFF LINK: 00000054 CPSR: 180000D3 B 060H ! Reset
C. OCDemon data after "Step" PC: 00000060 SP: FFFFFFFF LINK: 00000054 CPSR: 180000D3 MRS R0, CPSR
D. OCDemon data after "Go" PC: 00000060 SP: FFFFFFFF LINK: 00000054 CPSR: 180000D3 MRS R0, CPSR "run_target_from_pc:target bus error (20:11)" appears in the bottom left panel.
and that's all I have been able to do... again, thanks in advance.