[U-Boot] [PATCH 4/4] arm920t/at91/timer: replace bss variables by gd

[Wolfgang Denk]

Dear "=?UTF-8?B?QW5kcmVhcyBCaWXDn21hbm4=?=",

In message <4CF4AFED.1010609 at gmail.com> you wrote:
> 
> To get this bss issue fixed for v2010.12 I'd like to add another value
> to GD to hold the last hw timer value. My current usage of tbu should
> therefore go to tbl, to have a virutal 64 bit value just counting 32
> bit, is that right?

That sounds like a terrible mess to me, please do not do that. Either
we have a 64 bit counter, hen it should cound the full 64 bit range.
Or use a plain uint32_t if 32 bit are sfficient. Don't play any
tricks like misusing an "unused" part of one variable for other,
independent purposes.

I think we should provide a "uint64_t timebase" which represents a
real 64 bit counter. And if you need a separate "uint32_t timelast"
to store the previous timer value then please make this a separate
variable.

Best regards,

Wolfgang Denk

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