[U-Boot] [PATCH 0/1] Fix hang trying to protect flash sectors

[Wolfgang Denk <wd@denx.de>]

Dear "mark tomlinson",


Please restrict your line length to some 70 characters or so, and stop
posting HTML!

In message <4BF4FC5E020000B80001201A@gwia.alliedtelesyn.co.nz> you wrote:
>
> Sorry, no. The flash chips are 0xf8000000-0xf9ffffff (32MB). (Actually we
>  have twice this area reserved for 64MB flash in the future). The flash
>  chip from 0xf8000000 is also mirrored at 0xfff00000 at boot time. I do
> n't know if you consider this a hardware bug to not have all the flash at
>  the very top of memory, but that is the way our product has been desig
> ned. Here's a memory map of the high memory area: 

It's not a hardware bug, but a configuration error.

> f8000000-fbffffff   64M Flash 
> fe000000-fe0fffff    1M Battery-backed RAM 
> ff000000-ff00ffff   64K On-board logic 
> ff700000-ff7fffff    1M CCSR 
> fff00000-ffffffff    1M Flash (mirror of f8000000). 

This makes no sense. Fix your memory map, and map the flash (all of
it) to the end of the address space.

> So we have CONFIG_SYS_FLASH_BASE pointing to the entire Flash, and CONFIG
> _SYS_MONITOR_BASE pointing to the mirrored section which contains u-boot.

As I mentioned above: misconigured.

> NOTICE: This message contains privileged and confidential
> information intended only for the use of the addressee
...

And please stop posting these silly disclaimers.

Best regards,

Wolfgang Denk

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DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
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