From: Wolfgang Denk <wd@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] u-boot flash for yellowstone board with external programmer
Date: Fri, 21 Jul 2006 19:13:44 +0200 [thread overview]
Message-ID: <20060721171344.F0CB2352660@atlas.denx.de> (raw)
In-Reply-To: Your message of "Fri, 21 Jul 2006 18:38:53 +0200." <60E856FD577CC04BA3727AF4122D3F160123856C@3bit.vector.com.pl>
In message <60E856FD577CC04BA3727AF4122D3F160123856C@3bit.vector.com.pl> you wrote:
>
> for some reason we need to replace flash chip on yellowstone board and program it with external programmer.
> The question is that for external programmer flash is visible as 0-64M, and I'm not sure where should I program 512k of u-boot? I assume that at the end of the chip (CPU is looking at the end, at 0xfffffffc),am I right?
The normale image address for U-Boot on the yelowstone is FFF80000
(flash being mapped ion the FC000000 ... FFFFFFFF area); so if you
see 0 ... 64M = 04000000, then you will have to program the image at
0x3F80000
> Also concerning endianness -as board has swapped data and address
> signals (flash_A0->cpu_A30, flash_D0->cpu_D15) I assume that image
There are no swapped signals. Just keep in mind that on PowerPC MSB =
Bit 0.
> can be programmed "as is" - 16-bit word-by-word without any
> conversion? Please fix me if I'm wrong.
Right.
Best regards,
Wolfgang Denk
--
Software Engineering: Embedded and Realtime Systems, Embedded Linux
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"Beware of programmers carrying screwdrivers." - Chip Salzenberg
prev parent reply other threads:[~2006-07-21 17:13 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-07-21 16:38 [U-Boot-Users] u-boot flash for yellowstone board with external programmer Andriy Korud
2006-07-21 17:13 ` Wolfgang Denk [this message]
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