[PATCH] ARM: add support for uncompressed uImage kernel

Sascha Hauer s.hauer at pengutronix.de
Tue Nov 9 17:38:03 EST 2010


On Tue, Nov 09, 2010 at 02:04:55PM +0000, Russell King - ARM Linux wrote:
> Is it really faster to copy an uncompressed image than it is to
> decompress using LZMA with caches on?
> 

At least on an i.MX35 I can read a bigger image from NAND faster than I
can read + uncompress a smaller image. ZBOOT_ROM is no option for NAND.
Reading from NAND is done with mmu/dcache on in this case.

Sascha

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