On Wed, 2012-08-15 at 18:55 +0100, Dave Martin wrote: > On Wed, Aug 15, 2012 at 05:47:19PM +0100, Jon Medhurst (Tixy) wrote: > > Hi Andrey > > > > Can you include a new topic to linux-linaro which contains device-tree > > files for ARM's fast models? This branch is tracking-armlt-rtsm [1] in > > the ARM LT working tree. > > > > Thanks > > > > For those interested... > > > > These device-trees enable the the current Linaro vexpress kernel to boot > > on fast-models when used with the boot-wrapper at [2], this includes > > having a working display. However, on the big.LITLE models the A7 cores > > don't start, giving "Failed to boot -38". > > Does that bootwrapper do anything to bring the A7s out of reset? I think > by default they are held in reset -- there is a model configuration > parameter for that, but I can't remember it off-hand.
A little bird told me... For just booting cluster 0 use : -C coretile.dualclustersystemconfigurationblock.CFG_ACTIVECLUSTER=0x1 To make both clusters boot for running MP use : -C coretile.dualclustersystemconfigurationblock.CFG_ACTIVECLUSTER=0x3 Linaro's boot-wrapper is also going to need updating based on... http://linux-arm.org/git?p=boot-wrapper.git;a=commit;h=e7ae96aefcd7ed8985ac85dc5e30bb0e6fd89671 Would be good if there was a way of detecting the presence of the CCI at runtime so we can have a single bootwrapper for all models. -- Tixy _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
