From: Alex Dubov <oakad@yahoo.com>
Date: Tue, 4 Aug 2009 19:57:02 -0700 (PDT)
Subject: [U-Boot] [PATCH] stxamc8548: make environment use one of the
	smaller "boot" blocks in flash
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> > 
> > Put environment into .ppcenv section aligned on a
> smaller "boot" eraseblock
> > boundary near flash end.
> 
> Hm... if you change to code to using a smaller boot
> sector...
> 
> >? #define CONFIG_ENV_ADDR? ? ?
> ? (CONFIG_SYS_MONITOR_BASE + 0x38000)
> >? #define
> CONFIG_ENV_SECT_SIZE???0x4000???/*
> 16K(one sector) for env */
> > -#define CONFIG_ENV_SIZE? ? ? ?
> 0x2000
> > +#define CONFIG_ENV_SIZE? ? ? ?
> 0x4000
> 
> ...should then not be CONFIG_ENV_SECT_SIZE changed to some
> smaller
> size, too?
> 

The "large" eraseblock size for this flash config is 128k (2x64k). Small one is 16k (2x8k).