Dear Shawn,
in message c3d0340b04072711035f9822df@mail.gmail.com you wrote:
- uclinux or linux?
strictly speaking: this question is off topic on this mailing list.
Since ARM946 has no MMU, uclinux might be a better starting point for porting linux to ARM946. But I have to find out the relationship
Let's rephrase it: the only chance you have on a MMU-less system is by using uCLinux. For standard Linux a working MMU is mandatory.
Note that it seens that uCLinux has already been ported to the ARM946.
between uclinux and linux. To my understanding, uclinux must be a patch to the normal linux distribution.
Not really. It's actually more of a different implemenation. And in 2.6 it's being merged into the standard kernel tree.
- Boot loader?
Does u-boot support ARM946? I know u-boot supports some ARM processors
Not yet, but it should be straightforward to add.
with MMU, such as 926. Or more general question: does u-boot support processors without MMU? From my ppc experience I know MMU is enabled on u-boot.
Yes, U-Boot does support MMU-less systems (see for example all the ARM7 or StrongARM systems, or the MIPS "purple" configuration).
And you are wrong: U-Boot does NOT use the MMU on PPC. [At least not on all processors, and if then not for virtual memory but just to play dirt^H^H^H^Hclever tricks with the data cache.]
Does ELDK support ARM946? ELDK supports arm920. ELDK can be used for arm946 if its core is compatible with arm920's. If ELDK doesn't
You can use the cross toolchain, but the ative target tools will of course not run as they require a standard Linux kernel, not uCLinux.
support it, does it mean that I have to build the cross tool chain from scratch? Is there any off-shelf tool I can use? I tried to build
There are many. Did you attempt to search the Web?
ppc cross tool chain from scratch before the crosstool came into being. That's not a straightforward step, actually painful.
Painful it is, indeed.
Best regards,
Wolfgang Denk