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".
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. For the in-kernel switcher, we have hacks in the bootwrapper to bring the A7s out of reset instead.
Cheers ---Dave
-- Tixy
[1] http://git.linaro.org/gitweb?p=landing-teams/working/arm/kernel.git%3Ba=shor... [2] http://git.linaro.org/gitweb?p=arm/models/boot-wrapper.git%3Ba=summary
linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
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:
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. For the in-kernel switcher, we have hacks in the bootwrapper to bring the A7s out of reset instead.
Thanks for the valuable clue. I think people in Linaro are using prebuilt models, I'm not sure how they are configured.
(I only first used fast models a couple of days ago to test out the device-trees, I hadn't planned on spending time fixing things like boot-wrappers.)
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%3Ba=commit%3Bh=e7ae96aefcd7ed898...
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.
On 08/15/2012 08:47 PM, 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.
Done, thanks! The git tag is ll-20120815.0.
*Tushar*,
I've commented out the Samsung LT's topics this time, as they seem to be v3.5-rc2 based. Do you have a plan to move them to v3.6-rc*?
Thanks, Andrey
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".
On 08/16/2012 12:55 AM, Andrey Konovalov wrote:
On 08/15/2012 08:47 PM, 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.
Done, thanks! The git tag is ll-20120815.0.
*Tushar*,
I've commented out the Samsung LT's topics this time, as they seem to be v3.5-rc2 based. Do you have a plan to move them to v3.6-rc*?
v3.6-rc1 based kernel is almost ready, pending some tests. I hope to push it to glo by this Friday.
Thanks, Andrey
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".
On 08/16/2012 08:24 AM, Tushar Behera wrote:
On 08/16/2012 12:55 AM, Andrey Konovalov wrote:
On 08/15/2012 08:47 PM, 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.
Done, thanks! The git tag is ll-20120815.0.
*Tushar*,
I've commented out the Samsung LT's topics this time, as they seem to be v3.5-rc2 based. Do you have a plan to move them to v3.6-rc*?
v3.6-rc1 based kernel is almost ready, pending some tests. I hope to push it to glo by this Friday.
Pushed to [1] with tag *samsung-lt-v3.6-rc1*
[1] git://git.linaro.org/landing-teams/working/samsung/kernel.git
Thanks, Andrey
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".
-
Andrey Konovalov -
Dave Martin -
Jon Medhurst (Tixy) -
Tushar Behera