[U-Boot-Users] Increasing U-Boot partition size
Jerry Van Baren
gerald.vanbaren at ge.com
Mon Aug 4 22:35:24 CEST 2008
Wolfgang Denk wrote:
> In message <489765FB.1010002 at ge.com> you wrote:
>>> Your choices are 0xfff00000 and zero, based on the BMS (Boot Memory
>>> Space) bit of the low reset control word.
>>>
>>> -Scott
>> ...and of the two options, I recommend 0xfff00000 ("boot high"). Note
>> that the start of u-boot is 0xfff00000 but the reset vector itself is
>> 0xfff00100 (or 0x00000100 for "boot low"). The first 0x100 bytes has
>> the u-boot signature and version info.
>
> I disagree.
>
> High-booting systems are a PITA. You always lose a full megabyte at
> the end of the flash of which usually only 256 kB or less are needed
> for U-Boot, wasting 0.75 MB.
>
> Also, systems with varying number of flash banks and/or flash sizes
> are not really straightforward to handle.
>
> Low-booting is much, much saner.
>
> Best regards,
>
> Wolfgang Denk
Arrr, my insanity. Wolfgang is correct, of course.
Sorry,
gvb
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