Freescale P1020 Startup
Hi, I'm currently trying to bring up a P1020 based board which boots from a NOR flash. My board config is based on the existing P2020RDB board.
The code faults very early with an instruction TLB error when transitioning from the boot page (0xfffff000) to the flash's address space (0xeffff000). The TLB has the same valid entries that U-Boot has setup at the corresponding point in the code (at the end of create_init_ram_area).
I have tried to compare start.S with its U-Boot cousin but alas, my PPC assembler fu fails me. Are there any differences between the E500 cores in the P1020 vs. P2020 that must be taken in to consideration in start.S?
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Thanks - wkz _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
Hello Tobias,
I was away for a week, hence the late answer.
Have you made any progress since you sent this email?
As far as I know, this early in the code there is no difference.
If you have more information on your debug step, I may be able to find something.
What tool do you use?
cheers,
REnaud
Quoted 10 lines · Tobias Waldekranz
Hi, I'm currently trying to bring up a P1020 based board which boots from a NOR flash. My board config is based on the existing P2020RDB board.
The code faults very early with an instruction TLB error when transitioning from the boot page (
0xfffff000) to the flash's address space (0xeffff000). The TLB has the same valid entries that U-Boot has setup at the corresponding point in the code (at the end ofcreate_init_ram_area).
Quoted 5 lines
I have tried to compare
start.Swith its U-Boot cousin but alas, my PPC assembler fu fails me. Are there any differences between the E500 cores in the P1020 vs. P2020 that must be taken in to consideration instart.S?
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