[Buildroot] [PATCH/next v1 7/7] board/raspberrypi: add Raspberry Pi Zero 2 W
Peter Seiderer
ps.report at gmx.net
Thu Nov 11 20:04:39 UTC 2021
From: Julien Grossholtz <julien.grossholtz at openest.io>
The Raspberry-Pi Zero 2 W is an affordable single board computer. It is
a more powerful drop-in replacement for the Raspberry Pi Zero W.
The board incorporates an Raspberry-Pi RP3A0 system-in-package (SiP) with
a Broadcom BCM2710A1 and 512MB LPDDR2 SDRAM. The CPU is a quad-core 1Ghz
64-bit Arm Cortex-A53. As for other Raspberry-Pis it also provides
2.4GHz 802.11 b/g/n Wifi, Bluetooth 4.2 and BLE.
The BCM2710 cpu is similar to the Raspberry-Pi 3, it uses the same
kernel configuration as the Raspberry-Pi 2 and 3.
Signed-off-by: Julien Grossholtz <julien.grossholtz at openest.io>
[Based on https://patchwork.ozlabs.org/project/buildroot/patch/20211030213600.3445223-3-julien.grossholtz@openest.io/
- reformat genimage-raspberrypizero2w.cfg according to the beautify patch-set
- update kernel version to 9878a11 (5.10.78)
- use new bcm2710-rpi-zero-2-w dtb
- update commit log about kernel config (RPi2/3)
- add DEVELOPERS entries for Julien
]
Signed-off-by: Peter Seiderer <ps.report at gmx.net>
---
DEVELOPERS | 2 ++
board/raspberrypi/config_zero2w.txt | 29 +++++++++++++++
.../genimage-raspberrypizero2w.cfg | 32 +++++++++++++++++
board/raspberrypi/readme.txt | 5 +++
board/raspberrypizero2w | 1 +
configs/raspberrypizero2w_defconfig | 36 +++++++++++++++++++
6 files changed, 105 insertions(+)
create mode 100644 board/raspberrypi/config_zero2w.txt
create mode 100644 board/raspberrypi/genimage-raspberrypizero2w.cfg
create mode 120000 board/raspberrypizero2w
create mode 100644 configs/raspberrypizero2w_defconfig
diff --git a/DEVELOPERS b/DEVELOPERS
index 70262eac8c..6f812eb564 100644
--- a/DEVELOPERS
+++ b/DEVELOPERS
@@ -1512,7 +1512,9 @@ N: Julien Corjon <corjon.j at ecagroup.com>
F: package/qt5/
N: Julien Grossholtz <julien.grossholtz at openest.io>
+F: board/raspberrypi/
F: board/technologic/ts7680/
+F: configs/raspberrypizero2w_defconfig
F: configs/ts7680_defconfig
F: package/paho-mqtt-c
diff --git a/board/raspberrypi/config_zero2w.txt b/board/raspberrypi/config_zero2w.txt
new file mode 100644
index 0000000000..9e6b7f5ccf
--- /dev/null
+++ b/board/raspberrypi/config_zero2w.txt
@@ -0,0 +1,29 @@
+# Please note that this is only a sample, we recommend you to change it to fit
+# your needs.
+# You should override this file using BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE.
+# See http://buildroot.org/manual.html#rootfs-custom
+# and http://elinux.org/RPiconfig for a description of config.txt syntax
+
+start_file=start.elf
+fixup_file=fixup.dat
+
+kernel=zImage
+
+# To use an external initramfs file
+#initramfs rootfs.cpio.gz
+
+# Disable overscan assuming the display supports displaying the full resolution
+# If the text shown on the screen disappears off the edge, comment this out
+disable_overscan=1
+
+# How much memory in MB to assign to the GPU on Pi models having
+# 256, 512 or 1024 MB total memory
+gpu_mem_256=100
+gpu_mem_512=100
+gpu_mem_1024=100
+
+# fixes rpi (3B, 3B+, 3A+, 4B ,zero W and zero 2) ttyAMA0 serial console
+dtoverlay=miniuart-bt
+
+# enable autoprobing of Bluetooth driver without need of hciattach/btattach
+dtoverlay=krnbt=on
diff --git a/board/raspberrypi/genimage-raspberrypizero2w.cfg b/board/raspberrypi/genimage-raspberrypizero2w.cfg
new file mode 100644
index 0000000000..b510fea563
--- /dev/null
+++ b/board/raspberrypi/genimage-raspberrypizero2w.cfg
@@ -0,0 +1,32 @@
+image boot.vfat {
+ vfat {
+ files = {
+ "bcm2710-rpi-zero-2-w.dtb",
+ "rpi-firmware/bootcode.bin",
+ "rpi-firmware/cmdline.txt",
+ "rpi-firmware/config.txt",
+ "rpi-firmware/fixup.dat",
+ "rpi-firmware/start.elf",
+ "rpi-firmware/overlays",
+ "zImage"
+ }
+ }
+
+ 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/raspberrypi/readme.txt b/board/raspberrypi/readme.txt
index d20096b5e6..c81fd801ae 100644
--- a/board/raspberrypi/readme.txt
+++ b/board/raspberrypi/readme.txt
@@ -28,6 +28,10 @@ For model Zero (model A+ in smaller form factor):
$ make raspberrypi0_defconfig
+For model Zero 2 W (model B3 in smaller form factor):
+
+ $ make raspberrypizero2w_defconfig
+
For model 2 B:
$ make raspberrypi2_defconfig
@@ -79,6 +83,7 @@ After building, you should obtain this tree:
+-- bcm2708-rpi-cm.dtb [1]
+-- bcm2708-rpi-zero.dtb [1]
+-- bcm2708-rpi-zero-w.dtb [1]
+ +-- bcm2710-rpi-zero-2-w.dtb [1]
+-- bcm2709-rpi-2-b.dtb [1]
+-- bcm2710-rpi-3-b.dtb [1]
+-- bcm2710-rpi-3-b-plus.dtb [1]
diff --git a/board/raspberrypizero2w b/board/raspberrypizero2w
new file mode 120000
index 0000000000..fcdafc81ed
--- /dev/null
+++ b/board/raspberrypizero2w
@@ -0,0 +1 @@
+raspberrypi
\ No newline at end of file
diff --git a/configs/raspberrypizero2w_defconfig b/configs/raspberrypizero2w_defconfig
new file mode 100644
index 0000000000..ddd6b97b06
--- /dev/null
+++ b/configs/raspberrypizero2w_defconfig
@@ -0,0 +1,36 @@
+BR2_arm=y
+BR2_cortex_a53=y
+BR2_ARM_FPU_NEON_VFPV4=y
+
+# Linux headers same as kernel, 5.10 series
+BR2_PACKAGE_HOST_LINUX_HEADERS_CUSTOM_5_10=y
+
+BR2_TOOLCHAIN_BUILDROOT_CXX=y
+
+BR2_LINUX_KERNEL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL=y
+BR2_LINUX_KERNEL_CUSTOM_TARBALL_LOCATION="$(call github,raspberrypi,linux,9878a118cbdb7779fd15caa45915d22bff381ba3)/linux-9878a118cbdb7779fd15caa45915d22bff381ba3.tar.gz"
+BR2_LINUX_KERNEL_DEFCONFIG="bcm2709"
+
+# Build the DTB from the kernel sources
+BR2_LINUX_KERNEL_DTS_SUPPORT=y
+BR2_LINUX_KERNEL_INTREE_DTS_NAME="bcm2710-rpi-zero-2-w"
+BR2_LINUX_KERNEL_NEEDS_HOST_OPENSSL=y
+
+BR2_PACKAGE_RPI_FIRMWARE=y
+BR2_PACKAGE_RPI_FIRMWARE_BOOTCODE_BIN=y
+BR2_PACKAGE_RPI_FIRMWARE_VARIANT_PI=y
+BR2_PACKAGE_RPI_FIRMWARE_CONFIG_FILE="board/raspberrypizero2w/config_zero2w.txt"
+
+# MicroSD images generation tools
+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/raspberrypizero2w/post-build.sh"
+BR2_ROOTFS_POST_IMAGE_SCRIPT="board/raspberrypizero2w/post-image.sh"
--
2.33.1
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