Message ID | 1441965609-4092-1-git-send-email-gary.bisson@boundarydevices.com |
---|---|
State | Accepted |
Headers | show |
Gary, On Fri, 11 Sep 2015 12:00:09 +0200, Gary Bisson wrote: > This board is using the exact same kernel and u-boot revision as the > Nitrogen6x. They also share the same u-boot "autoboot" script. > > The differences between the two configurations are: > - getty port is ttymxc0 instead of ttymxc1 > - uImage load address is 0x80008000 Do you have a reason to keep using uImage instead of using zImage? uImage are now a bit deprecated on ARM, and zImage is the modern way of booting the kernel even from U-Boot (using the bootz command). > I didn't include this patch as part of the Freescale packages update > as it is an addition. However this patch depends on the updates to be > applied for graphics support and so on. > http://lists.busybox.net/pipermail/buildroot/2015-September/139278.html No problem, I applied them already. > I wish we could do an include of another defconfig, that'd simplify > future config updates as it could look like: > > include nitrogen6x_defconfig > BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0" > BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x80008000" > BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx6sx-nitrogen6sx" > > That would also be very useful for all the Freescale sabre boards > where every config is almost the same apart from uboot configuration > or device tree name. Indeed. We don't have a solution for this in the upstream Buildroot. However, people in this situation are encouraged to use the concept of "defconfig" fragments, which can be merged together to give the final defconfig. I've applied your patch. Thanks! Thomas
Hi Thomas, On Sat, Sep 19, 2015 at 3:34 PM, Thomas Petazzoni <thomas.petazzoni@free-electrons.com> wrote: > Gary, > > On Fri, 11 Sep 2015 12:00:09 +0200, Gary Bisson wrote: >> This board is using the exact same kernel and u-boot revision as the >> Nitrogen6x. They also share the same u-boot "autoboot" script. >> >> The differences between the two configurations are: >> - getty port is ttymxc0 instead of ttymxc1 >> - uImage load address is 0x80008000 > > Do you have a reason to keep using uImage instead of using zImage? > uImage are now a bit deprecated on ARM, and zImage is the modern way of > booting the kernel even from U-Boot (using the bootz command). Legacy I guess. I should look into it but the main advantage I see of bootm/uImage is the CRC check. What is the story behind the switch to bootz? >> I didn't include this patch as part of the Freescale packages update >> as it is an addition. However this patch depends on the updates to be >> applied for graphics support and so on. >> http://lists.busybox.net/pipermail/buildroot/2015-September/139278.html > > No problem, I applied them already. > >> I wish we could do an include of another defconfig, that'd simplify >> future config updates as it could look like: >> >> include nitrogen6x_defconfig >> BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0" >> BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x80008000" >> BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx6sx-nitrogen6sx" >> >> That would also be very useful for all the Freescale sabre boards >> where every config is almost the same apart from uboot configuration >> or device tree name. > > Indeed. We don't have a solution for this in the upstream Buildroot. > However, people in this situation are encouraged to use the concept of > "defconfig" fragments, which can be merged together to give the final > defconfig. Ok, I'll into the fragments concept. Thanks, Gary
Hi Gary, On Mon, Sep 21, 2015 at 06:19:03PM +0200, Gary Bisson wrote: > On Sat, Sep 19, 2015 at 3:34 PM, Thomas Petazzoni > <thomas.petazzoni@free-electrons.com> wrote: > > On Fri, 11 Sep 2015 12:00:09 +0200, Gary Bisson wrote: > >> This board is using the exact same kernel and u-boot revision as the > >> Nitrogen6x. They also share the same u-boot "autoboot" script. > >> > >> The differences between the two configurations are: > >> - getty port is ttymxc0 instead of ttymxc1 > >> - uImage load address is 0x80008000 > > > > Do you have a reason to keep using uImage instead of using zImage? > > uImage are now a bit deprecated on ARM, and zImage is the modern way of > > booting the kernel even from U-Boot (using the bootz command). > > Legacy I guess. I should look into it but the main advantage I see of > bootm/uImage is the CRC check. What is the story behind the switch to > bootz? Multiplatform. See [1], for example. [1] http://lists.infradead.org/pipermail/linux-arm-kernel/2011-September/066289.html baruch
Hi Baruch, On Mon, Sep 21, 2015 at 7:08 PM, Baruch Siach <baruch@tkos.co.il> wrote: > Hi Gary, > > On Mon, Sep 21, 2015 at 06:19:03PM +0200, Gary Bisson wrote: >> On Sat, Sep 19, 2015 at 3:34 PM, Thomas Petazzoni >> <thomas.petazzoni@free-electrons.com> wrote: >> > On Fri, 11 Sep 2015 12:00:09 +0200, Gary Bisson wrote: >> >> This board is using the exact same kernel and u-boot revision as the >> >> Nitrogen6x. They also share the same u-boot "autoboot" script. >> >> >> >> The differences between the two configurations are: >> >> - getty port is ttymxc0 instead of ttymxc1 >> >> - uImage load address is 0x80008000 >> > >> > Do you have a reason to keep using uImage instead of using zImage? >> > uImage are now a bit deprecated on ARM, and zImage is the modern way of >> > booting the kernel even from U-Boot (using the bootz command). >> >> Legacy I guess. I should look into it but the main advantage I see of >> bootm/uImage is the CRC check. What is the story behind the switch to >> bootz? > > Multiplatform. See [1], for example. > > [1] > http://lists.infradead.org/pipermail/linux-arm-kernel/2011-September/066289.html Thanks for the link. So indeed the mx6qdl vs mx6sx is the perfect example to show the need of bootz. Thanks, Gary
diff --git a/configs/nitrogen6sx_defconfig b/configs/nitrogen6sx_defconfig new file mode 100644 index 0000000..70006d5 --- /dev/null +++ b/configs/nitrogen6sx_defconfig @@ -0,0 +1,37 @@ +# architecture +BR2_arm=y +BR2_cortex_a9=y + +# system +BR2_TARGET_GENERIC_GETTY=y +BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0" +BR2_ROOTFS_POST_BUILD_SCRIPT="board/boundarydevices/nitrogen6x/post-build.sh" +BR2_PACKAGE_HOST_UBOOT_TOOLS=y + +# filesystem +BR2_TARGET_ROOTFS_EXT2=y +BR2_TARGET_ROOTFS_EXT2_2r1=y + +# Lock headers to match kernel +BR2_KERNEL_HEADERS_VERSION=y +BR2_DEFAULT_KERNEL_VERSION="3.14.28" +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_14=y + +# bootloader +BR2_TARGET_UBOOT=y +BR2_TARGET_UBOOT_BOARDNAME="nitrogen6sx" +BR2_TARGET_UBOOT_FORMAT_IMX=y +BR2_TARGET_UBOOT_CUSTOM_TARBALL=y +# Last version of branch boundary-v2015.07 +BR2_TARGET_UBOOT_CUSTOM_TARBALL_LOCATION="http://github.com/boundarydevices/u-boot-imx6/tarball/5115a9e/u-boot-5115a9e.tar.gz" + +# kernel +BR2_LINUX_KERNEL=y +BR2_LINUX_KERNEL_CUSTOM_TARBALL=y +# Last version of branch boundary-imx_3.14.28_1.0.0_ga +BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="https://github.com/boundarydevices/linux-imx6/tarball/3417c66/linux-imx6-3417c66.tar.gz" +BR2_LINUX_KERNEL_DEFCONFIG="nitrogen6x" +BR2_LINUX_KERNEL_INSTALL_TARGET=y +BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x80008000" +BR2_LINUX_KERNEL_DTS_SUPPORT=y +BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx6sx-nitrogen6sx"
This board is using the exact same kernel and u-boot revision as the Nitrogen6x. They also share the same u-boot "autoboot" script. The differences between the two configurations are: - getty port is ttymxc0 instead of ttymxc1 - uImage load address is 0x80008000 - different device tree http://boundarydevices.com/product/nit6_solox-imx6/ Signed-off-by: Gary Bisson <gary.bisson@boundarydevices.com> --- Hi all, I didn't include this patch as part of the Freescale packages update as it is an addition. However this patch depends on the updates to be applied for graphics support and so on. http://lists.busybox.net/pipermail/buildroot/2015-September/139278.html I wish we could do an include of another defconfig, that'd simplify future config updates as it could look like: include nitrogen6x_defconfig BR2_TARGET_GENERIC_GETTY_PORT="ttymxc0" BR2_LINUX_KERNEL_UIMAGE_LOADADDR="0x80008000" BR2_LINUX_KERNEL_INTREE_DTS_NAME="imx6sx-nitrogen6sx" That would also be very useful for all the Freescale sabre boards where every config is almost the same apart from uboot configuration or device tree name. Regards, Gary --- configs/nitrogen6sx_defconfig | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 configs/nitrogen6sx_defconfig