* [U-Boot-Users] u-boot flash for yellowstone board with external programmer
@ 2006-07-21 16:38 Andriy Korud
2006-07-21 17:13 ` Wolfgang Denk
0 siblings, 1 reply; 2+ messages in thread
From: Andriy Korud @ 2006-07-21 16:38 UTC (permalink / raw)
To: u-boot
Hello,
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?
Also concerning endianness -as board has swapped data and address signals (flash_A0->cpu_A30, flash_D0->cpu_D15) I assume that image can be programmed "as is" - 16-bit word-by-word without any conversion? Please fix me if I'm wrong.
Best regards,
Andriy Korud
^ permalink raw reply [flat|nested] 2+ messages in thread
* [U-Boot-Users] u-boot flash for yellowstone board with external programmer
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
0 siblings, 0 replies; 2+ messages in thread
From: Wolfgang Denk @ 2006-07-21 17:13 UTC (permalink / raw)
To: u-boot
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
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2006-07-21 17:13 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
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 is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox