Re: 8250_early for big-endian

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> I am using 8250 console and wish to use the 8250_early as well.
> 
> I encounter endianess problem while using this driver for mmio32.
> 
> The problem is since my serial peripheral like my cpu is in BIG endian.
> 
> Driver through serial_in/serial_out uses readl/writel from asm-generic/io.h.
> 
> These macros assume peripheral is always in LITTLE endian.
> 
> Therefore all data needs a swab. 
> 
> In 8250 driver I can register replacement for default serial_in/serial_out and workaround the problem.
> In 8250_early I had no choice but to change code with additional swab to workaround the problem.
> 
> I am looking for proper solution so it can be added to upstream.
> I got several ideas if interest arise.

Given they are all byte registers so how can they need swapping ? They are
merely 3 further bytes offset.

Alan
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