Sudhakar Rajashekhara writes:
Sudhakar> Hi, I am trying to port U-boot-1.0.0 on a board which has Sudhakar> MPC8280 processor. I have started with RAM boot. I am Sudhakar> using VisionPROBE utility to debug. One of the line which Sudhakar> U-boot executes is as follows.
Sudhakar> boot_warm: Sudhakar> mfmsr r5 /* save msr contents */
Sudhakar> This line is supposed to move the contents of MSR register Sudhakar> to R5 register. I am seeing the content of these two Sudhakar> registers before the execution of the above statement and Sudhakar> after the execution, using "DR" command. But I feel that Sudhakar> the above statement is not executed properly as the Sudhakar> content of R5 register is same even after the above line Sudhakar> is executed (in my case 40) whereas MSR is all ZEROes. Why Sudhakar> is it happening so? I also want to know whether anyone has Sudhakar> sucessfully ported U-boot to MPC8280?
Yes, look at board/mpc8260ads. The port runs on PQ2FADS board on MPC8280. Our customers use U-Boot on their MPC8270-based boards.