On Fri, Jun 05, 2009 at 07:37:26PM +0200, Patrick Georgi wrote: > The 20090605-[5678]-* patches give some indication on how to switch a > board over to CBFS support. It's not as easy as without the 20090531 > patch, but at least it works correctly then: > > For targets that use the src/config/*calculation.lb files, it's quite easy: > 1. define FALLBACK_SIZE to ROM_IMAGE_SIZE (both normal and fallback are > of that size now, that kludge can be dropped after non-CBFS is dropped) > > 2. drop most size definitions from the targets/*/*/Config*lb, except > ROM_SIZE (the total size of the image) > > 3. ROM_IMAGE_SIZE must be set to the intended size of the up-to-raminit > stage of coreboot (coreboot_ram is loaded from CBFS). > Usually, 64kb is enough, and choosing smaller values only makes > configuring the XIP range harder. > > For boards with coreboot_apc image (AMD stuff mostly), you also have to > remove "ldscript /arch/i386/init/ldscript_apc.lb" from the mainboard's > Config.lb (not shown in this patch set, as none of these boards uses > it). coreboot_apc also resides in CBFS now, so this link hack in not > required anymore. > > With this, I think CBFS has no regressions over the old style rom image > layout anymore, so moving everything over to using CBFS would be a nice > next step, as lots of stuff in the build system could disappear after > that.
Most of the text above should make a good start for a "How to move a board to CBFS" page in the wiki. > Index: targets/asus/m2v-mx_se/Config-abuild.lb > =================================================================== > --- targets/asus/m2v-mx_se/Config-abuild.lb (revision 4340) > +++ targets/asus/m2v-mx_se/Config-abuild.lb (working copy) > @@ -20,6 +20,10 @@ > target asus_m2v-mx_se > mainboard asus/m2v-mx_se > > +option CC="CROSSCC" > +option CROSS_COMPILE="CROSS_PREFIX" > +option HOSTCC="CROSS_HOSTCC" Shouldn't this be option CC="$(CROSSCC)" option CROSS_COMPILE="$(CROSS_PREFIX)" option HOSTCC="$(CROSS_HOSTCC)" Does the syntax without braces work? I confirmed on hardware (the kontron board), that these patches do indeed build/work fine _and_ fix the currently broken kontron board build. Without the patches you get 0xff on POST cards, and no serial output at all. Acked-by: Uwe Hermann <[email protected]> but please take Myles' comments into account. Uwe. -- http://www.hermann-uwe.de | http://www.holsham-traders.de http://www.crazy-hacks.org | http://www.unmaintained-free-software.org -- coreboot mailing list: [email protected] http://www.coreboot.org/mailman/listinfo/coreboot
