From 41edb1fd9057e4b2cbc9fb10c837143256ccc2fd Mon Sep 17 00:00:00 2001
From: Qiyang Sun <qs2g22@soton.ac.uk>
Date: Fri, 9 Aug 2024 01:34:39 +0100
Subject: [PATCH] Fastinit runlevel 2: add kernel modules for camera
---
recipes-bsp/bootfiles/rpi-cmdline.bbappend | 2 +-
recipes-core/fastinit/files/fastinit.sh | 35 +++++++++++++++++++++-
2 files changed, 35 insertions(+), 2 deletions(-)
diff --git a/recipes-bsp/bootfiles/rpi-cmdline.bbappend b/recipes-bsp/bootfiles/rpi-cmdline.bbappend
index edd3908..eb4f84f 100644
--- a/recipes-bsp/bootfiles/rpi-cmdline.bbappend
+++ b/recipes-bsp/bootfiles/rpi-cmdline.bbappend
@@ -5,4 +5,4 @@ CMDLINE:append = " modules.load=dwc2,g_serial"
CMDLINE:append = " earlycon=uart8250,mmio32,0x20215040"
#CMDLINE:append = " earlycon=pl011,mmio32,0x20201000"
-CMDLINE:append = " init=/usr/sbin/fastinit.sh 1"
+CMDLINE:append = " init=/usr/sbin/fastinit.sh 2"
diff --git a/recipes-core/fastinit/files/fastinit.sh b/recipes-core/fastinit/files/fastinit.sh
index abda454..09b1965 100755
--- a/recipes-core/fastinit/files/fastinit.sh
+++ b/recipes-core/fastinit/files/fastinit.sh
@@ -19,20 +19,48 @@ level_zero() {
exec /sbin/poweroff -f
}
-level_one() {
+mountfs() {
log_to_kernel "mounting filesystems"
mount -t proc proc /proc
mount -t sysfs sysfs /sys
mount -o ro /dev/mmcblk0p1 /boot
+}
+gp23hi() {
log_to_kernel "setting gpio 23 to high"
/usr/bin/gpioset -c 0 23=1 &
+}
+level_one() {
+ mountfs
+ gp23hi
+ crit_to_kernel "host is up and ready"
+ log_to_kernel "getting teletypes on ttyS0"
+ /sbin/getty -L 115200 ttyS0 vt100
+}
+
+level_two() {
+ mountfs
+ gp23hi
+
+ log_to_kernel "adding modules to linux kernel"
+ log_to_kernel "to be added: bcm2835-codec, bcm2835-isp, bcm2835-v4l2, bcm2835-unicam, ov5647, i2c-mux-pinctrl, i2c-bcm2835, uio, fixed"
+ modprobe bcm2835-codec # minors 0-4
+ modprobe bcm2835-isp # minors 5-12
+ modprobe bcm2835-v4l2
+ modprobe bcm2835-unicam # cause red led flash
+ modprobe ov5647
+ modprobe i2c-mux-pinctrl
+ modprobe i2c-bcm2835
+ modprobe uio
+ modprobe fixed
+
crit_to_kernel "host is up and ready"
log_to_kernel "getting teletypes on ttyS0"
/sbin/getty -L 115200 ttyS0 vt100
}
+
level_five() {
exec /sbin/init 5
}
@@ -58,6 +86,11 @@ else
log_to_kernel "runlevel 1: tty, serial, gpio"
level_one
;;
+ 2)
+ log_to_kernel "entering runlevel 2 (camera)"
+ log_to_kernel "runlevel 2: tty, serial, gpio, camera"
+ level_two
+ ;;
5)
log_to_kernel "entering runlevel 5 (sysvinit)"
level_five
--
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