Dear sayed zahid,
On 05.07.2012 13:42, sayed zahid wrote:
Hi , I have basic knowledge of porting u-boot to a new board. But now i have got a task to port u-boot on cavium mips based board. As i know that mips architecture is already supported, but will it support all cavium octeon mips variants?
I guess no. I had to work with some non mainlined version of u-boot provided by cavium a year ago (or something around that). At that time we got a
---8<--- abiessmann@azuregos % git grep U_BOOT_VERSION include/version.h include/version.h:#define U_BOOT_VERSION "U-Boot 1.1.1" --->8---
:(
AFAIR there was a lot of basic stuff missing in mainline U-Boot to get Cavium mips64 running at that time so I didn't start to port these proprietary changes (well it would not have been accepted the way it was written down; beside that cavium forced us to sign a NDA for that piece of GPL code).
I have not followed their open source efforts since then, but I saw a lot of work on the linux-mips list by David Daney and I think Aaron Williams is working for Cavium too and is on this list. Maybe one of them can comment?
Please put some light on this. I would be glad if you guys, give my some idea to where to start with or suggest some documents which will help me understand and port on a new architecture
You should not hesitate to contact their support and ask for proper mainline support of u-boot ;)
Enough Cavium bashing.
Regarding your question for documents, I'm sorry I can not help you here. I recommend start working with some mainlined device which is comparable, get firm with the architecture, try to find commonalities, get the new cpu in u-boot step by step.
Best regards
Andreas Bießmann