[Buildroot] [PATCHv2 2/2] configs: add raspberrypi4 64bits defconfig

[Arthur COURTEL <arthur.courtel@smile.fr>]

Hello Peter,

Indeed it is needed.
I don't know how i got a working serial on rpi4 without it...
Thanks for the feedback, I will propose a V3 to fix that.

Regards,
Arthur

On Tue, Dec 3, 2019 at 9:16 PM Peter Seiderer <ps.report@gmx.net> wrote:

> Hello Arthur,
>
> On Tue,  3 Dec 2019 14:26:58 +0100, Arthur Courtel <
> arthur.courtel at smile.fr> wrote:
>
> > This configuration builds a 64bit image for RaspberryPi 4.
> >
> > Signed-off-by: Arthur Courtel <arthur.courtel@smile.fr>
> > ---
> >  .../raspberrypi/genimage-raspberrypi4-64.cfg  | 30 +++++++++++++++
> >  board/raspberrypi4-64                         |  1 +
> >  configs/raspberrypi4_64_defconfig             | 37 +++++++++++++++++++
> >  3 files changed, 68 insertions(+)
> >  create mode 100644 board/raspberrypi/genimage-raspberrypi4-64.cfg
> >  create mode 120000 board/raspberrypi4-64
> >  create mode 100644 configs/raspberrypi4_64_defconfig
> >
> > diff --git a/board/raspberrypi/genimage-raspberrypi4-64.cfg
> b/board/raspberrypi/genimage-raspberrypi4-64.cfg
> > new file mode 100644
> > index 0000000000..3c480e98f0
> > --- /dev/null
> > +++ b/board/raspberrypi/genimage-raspberrypi4-64.cfg
> > @@ -0,0 +1,30 @@
> > +image boot.vfat {
> > +  vfat {
> > +    files = {
> > +      "bcm2711-rpi-4-b.dtb",
> > +      "rpi-firmware/cmdline.txt",
> > +      "rpi-firmware/config.txt",
> > +      "rpi-firmware/fixup4.dat",
> > +      "rpi-firmware/start4.elf",
> > +      "rpi-firmware/overlays",
> > +      "Image"
> > +    }
> > +  }
> > +  size = 32M
> > +}
> > +
> > +image sdcard.img {
> > +  hdimage {
> > +  }
> > +
> > +  partition boot {
> > +    partition-type = 0xC
> > +    bootable = "true"
> > +    image = "boot.vfat"
> > +  }
> > +
> > +  partition rootfs {
> > +    partition-type = 0x83
> > +    image = "rootfs.ext4"
> > +  }
> > +}
> > diff --git a/board/raspberrypi4-64 b/board/raspberrypi4-64
> > new file mode 120000
> > index 0000000000..fcdafc81ed
> > --- /dev/null
> > +++ b/board/raspberrypi4-64
> > @@ -0,0 +1 @@
> > +raspberrypi
> > \ No newline at end of file
> > diff --git a/configs/raspberrypi4_64_defconfig
> b/configs/raspberrypi4_64_defconfig
> > new file mode 100644
> > index 0000000000..c88923d507
> > --- /dev/null
> > +++ b/configs/raspberrypi4_64_defconfig
> > @@ -0,0 +1,37 @@
> > +BR2_aarch64=y
> > +BR2_cortex_a72=y
> > +
> > +BR2_TOOLCHAIN_BUILDROOT_CXX=y
> > +
> > +BR2_SYSTEM_DHCP="eth0"
> > +
> > +# Linux headers same as kernel, a 4.19 series
> > +BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_4_19=y
> > +
> > +BR2_LINUX_KERNEL=y
> > +BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
> > +BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call
> github,raspberrypi,linux,raspberrypi-kernel_1.20190819-1)/linux-raspberrypi-kernel_1.20190819-1.tar.gz"
> > +BR2_LINUX_KERNEL_DEFCONFIG="bcm2711"
> > +
> > +# Build the DTB from the kernel sources
> > +BR2_LINUX_KERNEL_DTS_SUPPORT=y
> > +BR2_LINUX_KERNEL_INTREE_DTS_NAME="broadcom/bcm2711-rpi-4-b"
>
> No chance to test myself for pi4 (because of lack of hardware yet), but I
> believe
> BR2_LINUX_KERNEL_DTB_OVERLAY_SUPPORT=y is needed for an 64-bit kernel, see
> [1] and [2] for pi3...
>
> Regards,
> Peter
>
> [1]
> https://git.buildroot.net/buildroot/commit/?id=2aa92335cdc5f71c2d09391dc49fcf3c7627d6f0
> [2]
> https://git.buildroot.net/buildroot/commit/?id=e747d33bd9d319481a67a376c97e5100dd93f62a
>
> > +
> > +BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
> > +
> > +BR2_PACKAGE_RPI_FIRMWARE=y
> > +BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI4=y
> > +
> > +# Required tools to create the SD image
> > +BR2_PACKAGE_HOST_DOSFSTOOLS=y
> > +BR2_PACKAGE_HOST_GENIMAGE=y
> > +BR2_PACKAGE_HOST_MTOOLS=y
> > +
> > +# Filesystem / image
> > +BR2_TARGET_ROOTFS_EXT2=y
> > +BR2_TARGET_ROOTFS_EXT2_4=y
> > +BR2_TARGET_ROOTFS_EXT2_SIZE="120M"
> > +# BR2_TARGET_ROOTFS_TAR is not set
> > +BR2_ROOTFS_POST_BUILD_SCRIPT="board/raspberrypi4-64/post-build.sh"
> > +BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypi4-64/post-image.sh"
> > +BR2_ROOTFS_POST_SCRIPT_ARGS="--add-miniuart-bt-overlay --aarch64"
>
>

-- 
<http://www.smile.eu/>
*Arthur COURTEL*
Ing?nieur Etude et D?veloppement

[image: email] arthur.courtel at smile.fr

[image: eco] Pour la plan?te, n'imprimez ce mail que si c'est n?cessaire
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