On Wed, 2013-09-25 at 20:04 -0500, sun york-R58495 wrote: > On Sep 25, 2013, at 4:52 PM, Scott Wood wrote: > > > On Wed, 2013-09-25 at 16:30 -0700, York Sun wrote: > >> Dear Wolfgang, > >> > >> I failed to find the guideline, here is my question. Pardon me if this > >> is a dump question as I am still new to ARM. > >> > >> As David Feng post his patch set to add ARMv8 support, I am trying to > >> enable it for Freescale implementation. Let's name it as LS2 for this > >> discussion. I am thinking to reuse as much as possible for existing > >> codes, which include copying some header files from powerpc partially. I > >> noticed the SoC field in boards.cfg file and I am wondering how to use > >> it effectively. I want to put LS2 specific headers to > >> arch/arm/include/asm/arch-ls2. Do I need to copy all files from > >> arch/arm/include/asm/arch-armv8/? There aren't many but I see mmu.h is > >> included in start.S. I have been searching case like this in ARMv7 but > >> didn't see shared header file (maybe I missed it). Please advise. > > > > LS2 is (or perhaps more accurately, contains) an implementation of > > ARMv8, so you should be using arch-armv8 rather than copying it. > > True. But I guess LS2 won't be the only "LS" Freescale is going to > make. Where is the best place to put the header file for chassis > related registers, like CCSR we have for mpc8xxx.
Anything that isn't deeply tied to the ARM architecture should probably just go in include/. > I am thinking the > best place is arch/arm/include/asm/ls2 (or a better name). Like other > ARMv7 variants, I am thinking to put ls2 under arch/arm/cpu/armv8/ as > well, to host LS-specific code. Likewise, if it's specifically tied to armv8 it should go in arch/arm/include/asm/arch-armv8, but I'm not sure what would be tied to both armv8 and ls2. Most likely anything LS-specific that needs to go under arch/arm/ should go somewhere like arch/arm/include/asm/ls/ (similar to arch/arm/include/asm/imx-common). -Scott _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot