* [U-Boot] Ask: How speed up read nand flash on lpc3250
@ 2009-07-22 14:47 xbl1986
2009-07-28 21:36 ` Scott Wood
0 siblings, 1 reply; 2+ messages in thread
From: xbl1986 @ 2009-07-22 14:47 UTC (permalink / raw)
To: u-boot
CPU:LPC3250.
Nand:K9F2G8U0A 256M
the u-boot boot time now about 8s.
the step to read linux kernel less 2M cost more or less 4s!!
I want to make it faster~,but don't know how to.
I try to change the memcpy function.but it's works not very well.
so i want to via the maillist to find some help.
thank you~~.
--wizard
^ permalink raw reply [flat|nested] 2+ messages in thread* [U-Boot] Ask: How speed up read nand flash on lpc3250
2009-07-22 14:47 [U-Boot] Ask: How speed up read nand flash on lpc3250 xbl1986
@ 2009-07-28 21:36 ` Scott Wood
0 siblings, 0 replies; 2+ messages in thread
From: Scott Wood @ 2009-07-28 21:36 UTC (permalink / raw)
To: u-boot
On Wed, Jul 22, 2009 at 10:47:22PM +0800, xbl1986 wrote:
> CPU:LPC3250.
I don't see that string anywhere in the U-Boot tree -- what NAND driver
are you using?
> Nand:K9F2G8U0A 256M
> the u-boot boot time now about 8s.
> the step to read linux kernel less 2M cost more or less 4s!!
> I want to make it faster~,but don't know how to.
Make sure you are creating an on-chip bad block table
(NAND_USE_FLASH_BBT). You'll still have to scan for bad blocks on first
boot, but it should be much faster after that.
-Scott
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2009-07-22 14:47 [U-Boot] Ask: How speed up read nand flash on lpc3250 xbl1986
2009-07-28 21:36 ` Scott Wood
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