[U-Boot] [ppc440epx] D-CACHE
I'm using u-boot-1.3.4 rc1 version on my custom board based on SEQUOIA.
Do I just have to define CONFIG_4xx_DCACHE in sequoia.h?? Tha's it??
Or, Should I patch my u-boot source?
(The comment said that it needs further testing.)
Best regards
Sean
Dear "sean",
In message 000001c91811$9cf51d70$d6df5850$@com you wrote:
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I'm using u-boot-1.3.4 rc1 version on my custom board based on SEQUOIA.
You should update the code to the current version, then.
Do I just have to define CONFIG_4xx_DCACHE in sequoia.h?? Tha's it??
Ummm..why would you want to do that? Which problem are you trying to solve? And are you aware of the implications of enabling the data cache?
Or, Should I patch my u-boot source?
That's difficult for us to tell as we don't know you board, nor your code, nor your intentions.
(The comment said that it needs further testing.)
Which comment said that? And in which context?
Best regards,
Wolfgang Denk
Sean,
On Tuesday 16 September 2008 17:33:47 sean wrote:
I'm using u-boot-1.3.4 rc1 version on my custom board based on SEQUOIA.
Which board are you talking about?
mfuchs@fox:~/git/u-boot$ grep EPx MAINTAINERS DU440 PPC440EPx PMC440 PPC440EPx HCU5 PPC440EPx korat PPC440EPx lwmon5 PPC440EPx sequoia PPC440EPx
Do I just have to define CONFIG_4xx_DCACHE in sequoia.h?? Tha's it??
Probably yes,
Or, Should I patch my u-boot source?
It flew out of our all's brain. So best thing would be to post the patches for your board and everybody will see if they can help you.
(The comment said that it needs further testing.)
This comment (wd: see include/configs/sequoia.h) should sensitize you: a) it's disabled on all public 4xx boards. So it's not tested that good as other options. b) you should know would you are doing when you enable it. E.g. USB will not work with this option and some OS do not like to be loaded with DCACHE enabled (e.g. OS/9).
Matthias
participants (3)
-
Matthias Fuchs -
sean -
Wolfgang Denk