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Introduce low-level debug for ARM architecture

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  1. v1 Latest0 of 4 patches 0 repliesNew

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Cover letter [U-Boot] [PATCH 0/4] Introduce low-level debug for ARM architecture
Quoted 6 lines · Masahiro Yamada

I have been in trouble for a while to debug some nasty problem where neighter a debugger nor printf() function is available.

I found the lowlevel debug feature in ARM Linux can be used as is in U-Boot too.

Quoted 8 lines

I tested this series on our SoCs (32bit ARM, specificly Coretex-A9). Because I was not sure about aarch64, I have this feature depend on "! ARM64".

1/4 and 2/4 refactor a bit and move CONFIG_ARM64 to Kconfig.

3/4 imports some source files from Linux 3.16 and
4/4 adds the Kconfig menu.

Dear Masahiro,

How do you use this debug facility? Do you print to memory?

I don't know enough to comment on the patch. I don't see CP15 co-process in the SoC I am debugging.

York

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