On Wed, Jul 3, 2013 at 8:48 PM, Jon Medhurst (Tixy) <t...@linaro.org> wrote: > On Wed, 2013-07-03 at 15:30 +0100, Jon Medhurst (Tixy) wrote: >> On Wed, 2013-07-03 at 19:03 +0530, Vijay Kilari wrote: >> > Hi, >> > >> > With latest Linaro ARM kernel mentioned below fails to boot when >> > following configs are enabled >> > CONFIG_VEXPRESS_SPC & CONFIG_ARCH_VEXPRESS_TC2_PM >> > >> > OR >> > >> > Even just enabling CONFIG_VEXPRESS_PSCI and passing psci as kernel >> > bootargs fails >> > >> > git://git.linaro.org/landing-teams/working/arm/kernel.git >> > >> > please let me know if you have any information on why it fails?. >> >> You'll need to provide us more of a clue a to what you are doing. >> >> 1. When you say 'fails to boot', do you get any messages out of the >> serial port? Can you provide a log? >> No log. Just fails at Starting kernel..
>> 2. You didn't mention that you had enabled CONFIG_BIG_LITTLE=y, this >> will be needed and possibly others. We have all the required configs for >> all vexpress CoreTiles, including TC2, in linaro/configs/vexpress.conf. CONFIG_BIG_LITTLE=y is enabled by default with below suggested config. >> 3. How are you generating the kernel config? In Linaro we use the >> command: >> >> ARCH=arm scripts/kconfig/merge_config.sh \ >> linaro/configs/linaro-base.conf \ >> linaro/configs/android.conf \ >> linaro/configs/big-LITTLE-MP.conf \ >> linaro/configs/big-LITTLE-IKS.conf \ >> linaro/configs/vexpress.conf >> >> (If you want a plain Linux kernel rather than an Android one, replace >> 'android.conf' with 'distribution.conf'.) >> I generated config with the above command. However I am using Versatile express with A15x2 and A7x3 (versatile TC2) So I changed 1) NR_CPUS=5 in vexpress.conf file 2) Used distribution.conf file instead on android.conf Also I used vexpress-v2p-ca15_a7.dtb file Result: Hangs at very beginning.. Logs: reserving fdt memory region: addr=ff000000 size=1000000 Loading Device Tree to 9fee2000, end 9fee8a98 ... OK Starting kernel .. I even tried without linaro/configs/big-LITTLE-MP.conf \ linaro/configs/big-LITTLE-IKS.conf \ but result is same. It hangs >> 4. What branch were you using in the git you mention? Though as Ryan >> said, you should really use the main linaro kernel which is the kernel >> we test and release each month. That is the linux-linaro branch of >> git://git.linaro.org/kernel/linux-linaro-tracking.git >> Yes. Used suggested git >> 5. Have you installed the firmware as described in the 'Firmware Update' >> tab of http://releases.linaro.org/13.06/android/vexpress ? This says to >> use the version 5.0 Versatile Express CD, plus some extra patches from >> ARM, plus some extra config files. All of these are needed to get a >> working system. > > I guess another good question is does last month's Linaro release boot > on your board? E.g. the kernel (zImage or uImage) and dtb > (v2p-ca15-tc2.dtb) from: > http://releases.linaro.org/13.06/android/vexpress/boot.tar.bz2 > Will test with this release and let you know the result > If that works, then we know the problem lies somewhere with the kernel > or config you are trying to build. And if the last Linaro release > doesn't boot, then the problem probably lies with the firmware and/or > config files on the vexpress motherboard. > > -- > Tixy > _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
