From 1a724a14c3b47f84c5d8c4206b151efa0246fe51 Mon Sep 17 00:00:00 2001
From: Grzegorz Kowalski <g.kowalski@isbt.se>
Date: Fri, 8 Mar 2024 01:37:02 +0100
Subject: [PATCH] custom configuration for Raspberry Pi Zero W

---
 conf/layer.conf                              | 20 ++++++++++++++++++++
 conf/machine/include/rpi-common.inc          |  6 ++++++
 conf/machine/rpi-zero-w.conf                 |  8 ++++++++
 recipes-bsp/bootfiles/rpi-bootfiles.bbappend |  5 +++++
 recipes-core/images/helium-image-rpi.bb      |  6 ++++++
 5 files changed, 45 insertions(+)
 create mode 100644 conf/layer.conf
 create mode 100644 conf/machine/include/rpi-common.inc
 create mode 100644 conf/machine/rpi-zero-w.conf
 create mode 100644 recipes-bsp/bootfiles/rpi-bootfiles.bbappend
 create mode 100644 recipes-core/images/helium-image-rpi.bb

diff --git a/conf/layer.conf b/conf/layer.conf
new file mode 100644
index 0000000..538aad1
--- /dev/null
+++ b/conf/layer.conf
@@ -0,0 +1,20 @@
+# We have a conf and classes directory, add to BBPATH
+BBPATH .= ":${LAYERDIR}"
+
+# We have recipes-* directories, add to BBFILES
+BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
+			${LAYERDIR}/recipes-*/*/*.bbappend"
+
+BBFILE_COLLECTIONS += "helium-rpi"
+BBFILE_PATTERN_helium-rpi = "^${LAYERDIR}/"
+BBFILE_PRIORITY_helium-rpi = "6"
+
+# This should only be incremented on significant changes that will
+# cause compatibility issues with other layers
+LAYERVERSION_helium-rpi = "2"
+
+
+LAYERDEPENDS_helium-rpi = "core raspberrypi helium"
+LAYERSERIES_COMPAT_helium-rpi = "mickledore"
+
+LICENSE_FLAGS_ACCEPTED = "synaptics-killswitch"
diff --git a/conf/machine/include/rpi-common.inc b/conf/machine/include/rpi-common.inc
new file mode 100644
index 0000000..932a45c
--- /dev/null
+++ b/conf/machine/include/rpi-common.inc
@@ -0,0 +1,6 @@
+# Raspberry Pi Helium common configuration
+
+ENABLE_UART = "1"
+ENABLE_I2C = "1"
+ENABLE_SPI_BUS = "1"
+ENABLE_W1 = "1"
diff --git a/conf/machine/rpi-zero-w.conf b/conf/machine/rpi-zero-w.conf
new file mode 100644
index 0000000..3e42e3e
--- /dev/null
+++ b/conf/machine/rpi-zero-w.conf
@@ -0,0 +1,8 @@
+#@TYPE: Machine
+#@NAME: RaspberryPi Zero WiFi Development Board
+
+require conf/machine/include/rpi-common.inc
+require conf/machine/raspberrypi0-wifi.conf
+
+KBUILD_DEFCONFIG:rpi-zero-w = "bcmrpi_defconfig"
+RPI_KERNEL_DEVICETREE = "bcm2708-rpi-zero-w.dtb"
diff --git a/recipes-bsp/bootfiles/rpi-bootfiles.bbappend b/recipes-bsp/bootfiles/rpi-bootfiles.bbappend
new file mode 100644
index 0000000..c54b10c
--- /dev/null
+++ b/recipes-bsp/bootfiles/rpi-bootfiles.bbappend
@@ -0,0 +1,5 @@
+# Enable UART output from bootcode.bin
+
+do_configure() {
+	sed -i -e "s/BOOT_UART=0/BOOT_UART=1/" ${S}/bootcode.bin
+}
diff --git a/recipes-core/images/helium-image-rpi.bb b/recipes-core/images/helium-image-rpi.bb
new file mode 100644
index 0000000..e543ef5
--- /dev/null
+++ b/recipes-core/images/helium-image-rpi.bb
@@ -0,0 +1,6 @@
+SUMMARY = "Helium image for Raspberry Pi"
+LICENSE = "MIT"
+
+require recipes-core/images/helium-image-default.bb
+DEPENDS += "rpi-bootfiles"
+