Hi Tixy, On Fri, Sep 7, 2012 at 5:42 PM, Jon Medhurst (Tixy) <t...@linaro.org> wrote:
> On Thu, 2012-09-06 at 22:34 +0800, Lei Wen wrote: > > I have several questions related how to run the mp over fastmodel. > > For the kernel config file, I see there are many for VE: > > android_vexpress_defconfig > > ubuntu_vexpress_defconfig > > vexpress_defconfig > > vexpress_tc2_defconfig > > Which one is suitable for the kernel run over fastmodel? > > > > Also the dts and bootwrapper, should I use below link? > > git://linux-arm.org/arm-dts.git > > git://git.linaro.org/arm/models/boot-wrapper.git or git:// > > linux-arm.org/boot-wrapper.git > > > Linaro's standard vexpress kernel will work on Fast Models. > > The kernel source is in the linux-linaro branch of > git://git.linaro.org/kernel/linux-linaro-tracking.git > > The config used is generated by the command: > > ARCH=arm scripts/kconfig/merge_config.sh \ > linaro/configs/linaro-base.conf \ > linaro/configs/ubuntu-minimal.conf \ > linaro/configs/vexpress.conf > > If you want to run a full Ubuntu desktop system its probably best to > replace 'ubuntu-minimal.conf' with 'ubuntu.conf'. And for Android > kernels use 'android.conf' instead. > > This kernel tree also contains device-trees for the Fast Models as > arch/arm/boot/dts/rtsm_ve* > > The boot-wrapper we are trying to standardise on is at > git://git.linaro.org/arm/models/boot-wrapper.git > > Currently this requires a patch (attached) to work on big.LITTLE models. > Note, this patch will break non bit.LITTLE models but people are working > on a way of a single boot-wrapper to work on all models. > > This boot-wrapper supports semi-hosting so it can be used as a > stand-alone bootloader and does not need to be merged with the kernel > binary. To build it: > > make CROSS_COMPILE=arm-linux-gnueabi- linux-system-semi.axf > > To run the big.LITTLE models you can then use a command like: > > RTSM_VE_Cortex-A15x4-A7x4 \ > -a coretile.cluster0.*=/path/linux-system-semi.axf \ > -a coretile.cluster1.*=/path/linux-system-semi.axf \ > -C > coretile.dualclustersystemconfigurationblock.CFG_ACTIVECLUSTER=0x3 \ > -C motherboard.mmc.p_mmc_file=/path/mmc.bin \ > -C coretile.cluster0.cpu0.semihosting-cmd_line="--kernel > /path/uImage --initrd /path/uInitrd --dtb /path/rtsm_ve-v2p-ca15x4-ca7x4 -- > console=ttyAMA0,115200n8 root=/dev/mmcblk0p2 rootwait ro debug" > > replacing names and paths as appropriate; and making sure the dtb file > you use matches the model you are running. I.e. it has the same type and > number of CPUS. > > For running non bit.LITTLE models use something like: > > RTSM_VE_Cortex-A15x4 \ > /path/linux-system-semi.axf \ > -C motherboard.mmc.p_mmc_file=/path/mmc.bin \ > -C cluster.cpu0.semihosting-cmd_line="--kernel /path/uImage > --initrd /path/uInitrd --dtb /path/rtsm_ve-cortex_a15x4 -- > console=ttyAMA0,115200n8 root=/dev/mmcblk0p2 rootwait ro debug" > > The MMC image to use for the root filesystem can be any Linaro vexpress > image created by linaro-media-create, or linaro-android-media-create, > but it needs to be limited to <2GB, e.g. for Android > > linaro-android-media-create \ > --image-file mmc.bin --image-size 2000M --dev vexpress \ > --boot boot.tar.bz2 --system system.tar.bz2 --userdata > userdata.tar.bz2 > > or an Ubuntu image > > linaro-media-create \ > --image-file mmc.bin --image-size 2000M --dev vexpress \ > --binary linaro-precise-XXXX.tar.gz \ > --hwpack hwpack_linaro-vexpress_XXXX.tar.gz > > To get a uInitrd to pass to the models then you can find this in > Android's boot.tar.bz2. However, for Ubuntu images I'm not sure of a > good way, only to create a second image on an SD card and then get a > uInitrd from the boot partition of that. > > Thanks a lot for the detailed setup doc. Thanks, Lei
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