| Message ID | 20161015165155.20004-1-vincent.stehle@laposte.net |
|---|---|
| State | Accepted |
| Headers | show |
On 15-10-16 18:51, Vincent Stehle wrote: > From: Vincent Stehlé <vincent.stehle@laposte.net> > > Bump kernel revision used by lego_ev3_defconfig to the latest tag from > ev3dev, as suggested by Peter. This is a 4.4 series kernel, which has the > added benefit of not necessitating a specific gcc to boot. > > We need a patch to create an empty drivers/lego/Kconfig file for the build > to succeed though, as the ev3dev kernel normally expects a drivers tree to > be checked out there. > > Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> > Suggested-by: Peter Korsgaard <peter@korsgaard.com> Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> > --- > > > Hi Peter, > > Thanks for the suggestion. Here is a patch to update lego_ev3_defconfig. > This boots fine for me, with gcc 5.4. > > One remark though: the ev3dev project has a separate drivers tree managed > as a git submodule of the kernel (!) I do not really know how to cope with > that properly, so I just added a patch to repair the build for the moment. > > Do you know if it is possible for the `linux' recipe to have extra > downloads like other packages do? But how would one extract the extra > archives to the proper place then? > Maybe this calls for an additional `ev3 drivers' package after all, what > do you think? > > Arnout I just saw your e-mail. Thanks for the config file, I double-checked > the one in this patch. If you don't mind I'd rather stay with a git tree > (shallow cloned) rather than a tarball. Is that ok for you? Any reason why you prefer a git tree? Regards, Arnout [snip]
Hello, On Sat, 15 Oct 2016 18:51:55 +0200, Vincent Stehle wrote: > From: Vincent Stehlé <vincent.stehle@laposte.net> > > Bump kernel revision used by lego_ev3_defconfig to the latest tag from > ev3dev, as suggested by Peter. This is a 4.4 series kernel, which has the > added benefit of not necessitating a specific gcc to boot. > > We need a patch to create an empty drivers/lego/Kconfig file for the build > to succeed though, as the ev3dev kernel normally expects a drivers tree to > be checked out there. > > Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> > Suggested-by: Peter Korsgaard <peter@korsgaard.com> I've applied your patch to master, thanks! One comment below, though. > Prepare your SDcard > =================== > > The following µSD card layout is recommended: > > -- First partition formated with a FAT filesystem, containing the uImage. > +- First partition formatted with a FAT filesystem, containing the uImage. > - Second partition formatted as ext2 or ext3, containing the root filesystem. > > Create the SDcard partition table It would be nice to use genimage here to automatically create a complete SD card image. Thanks, Thomas
>>>>> "Vincent" == Vincent Stehle <vincent.stehle@laposte.net> writes: Hi, > One remark though: the ev3dev project has a separate drivers tree > managed as a git submodule of the kernel (!) I do not really know how > to cope with that properly, so I just added a patch to repair the > build for the moment. How important are those drivers? We do actually support git submodules nowadays, but it has to be explicitly enabled per package. I'm not sure we really want to unconditionally enable it for the linux package so we would need to add a Config.in option to enable it. A nicer method might be to handle these drivers through our linux-extensions support. Take a look at linux/linux-ext-fbtft.mk and package/fbtft for an example of this. -- Bye, Peter Korsgaard
diff --git a/board/lego/ev3/patches/linux/0001-Create-empty-drivers-lego-Kconfig.patch b/board/lego/ev3/patches/linux/0001-Create-empty-drivers-lego-Kconfig.patch new file mode 100644 index 0000000..614d53d --- /dev/null +++ b/board/lego/ev3/patches/linux/0001-Create-empty-drivers-lego-Kconfig.patch @@ -0,0 +1,24 @@ +From 72c5727488f10160abfadcc77dd9763c4408b5e9 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= <vincent.stehle@laposte.net> +Date: Sat, 15 Oct 2016 16:23:31 +0200 +Subject: [PATCH] Create empty drivers/lego/Kconfig +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net> +--- + drivers/lego/Kconfig | 1 + + 1 file changed, 1 insertion(+) + create mode 100644 drivers/lego/Kconfig + +diff --git a/drivers/lego/Kconfig b/drivers/lego/Kconfig +new file mode 100644 +index 0000000..d7cbf4f +--- /dev/null ++++ b/drivers/lego/Kconfig +@@ -0,0 +1 @@ ++# Empty Kconfig just to make source from drivers/Kconfig succeed. +-- +2.9.3 + diff --git a/board/lego/ev3/readme.txt b/board/lego/ev3/readme.txt index 3c0bd2e..7d9ec4f 100644 --- a/board/lego/ev3/readme.txt +++ b/board/lego/ev3/readme.txt @@ -16,11 +16,8 @@ See: The buildroot configuration uses the Linux kernel of the ev3dev project. See: -- http://botbench.com/blog/2013/07/31/lego-mindstorms-ev3-source-code-available/ -- https://github.com/mindboards/ev3sources - -Note that the EV3 configuration uses gcc 4.7, as the boot is broken with gcc -4.8. +- https://github.com/ev3dev/ev3-kernel/ +- http://www.ev3dev.org/ How it works ============ @@ -61,13 +58,12 @@ After building, you should obtain this tree: ├── rootfs.ext3 -> rootfs.ext2 └── uImage - Prepare your SDcard =================== The following µSD card layout is recommended: -- First partition formated with a FAT filesystem, containing the uImage. +- First partition formatted with a FAT filesystem, containing the uImage. - Second partition formatted as ext2 or ext3, containing the root filesystem. Create the SDcard partition table diff --git a/configs/lego_ev3_defconfig b/configs/lego_ev3_defconfig index d49fa06..1ddc4f9 100644 --- a/configs/lego_ev3_defconfig +++ b/configs/lego_ev3_defconfig @@ -2,23 +2,23 @@ BR2_arm=y BR2_arm926t=y -# toolchain -# Use gcc 4.7, as gcc 4.8 breaks the boot. -BR2_GCC_VERSION_4_7_X=y +# patches +BR2_GLOBAL_PATCH_DIR="board/lego/ev3/patches" # system BR2_TARGET_GENERIC_GETTY=y BR2_TARGET_GENERIC_GETTY_PORT="ttyS1" -# Linux headers same as kernel, a 3.3 series -BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_3_3=y +# Linux headers same as kernel, a 4.4 series +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_4=y # Kernel BR2_LINUX_KERNEL=y BR2_LINUX_KERNEL_CUSTOM_GIT=y -BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/mindboards/ev3dev-kernel.git" -BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="v3.3.0-2-ev3dev_0" +BR2_LINUX_KERNEL_CUSTOM_REPO_URL="https://github.com/ev3dev/ev3dev-kernel.git" +BR2_LINUX_KERNEL_CUSTOM_REPO_VERSION="v4.4.19-15-ev3dev-ev3_1" BR2_LINUX_KERNEL_DEFCONFIG="ev3dev" +BR2_LINUX_KERNEL_UIMAGE=y # filesystem BR2_TARGET_ROOTFS_EXT2=y