Re: [U-Boot-Users] Increasing U-Boot partition size

4 Aug 2008


      In message 489765FB.1010002@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
-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de
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