From 9564c5e4e9e18c7191b05a2e3ab163facb3fa24a Mon Sep 17 00:00:00 2001
From: Matias Kotlik <matias@albacore.inc>
Date: Wed, 19 Nov 2025 21:44:33 -0500
Subject: [PATCH] fix: kernel command line

---
 build.sh   |  8 ++++----
 config.txt | 15 +--------------
 2 files changed, 5 insertions(+), 18 deletions(-)

diff --git a/build.sh b/build.sh
index 69be6f3..61547c5 100755
--- a/build.sh
+++ b/build.sh
@@ -27,10 +27,10 @@ elif [ "$ARCH" = "arm" ]; then
     cp /rpi-kernel/linux/arch/arm/boot/dts/overlays/README /raspios/mnt/boot/firmware/overlays/
 fi
 
-echo "kernel=${KERNEL}_rt.img" >> /raspios/config.txt
-cp /raspios/config.txt /raspios/mnt/boot/firmware/
-cp /raspios/userconf /raspios/mnt/boot/firmware/
-touch /raspios/mnt/boot/firmware/ssh
+echo "kernel=${KERNEL}_rt.img" >> /raspios/mnt/boot/firmware/config.txt
+
+# https://wiki.linuxfoundation.org/realtime/documentation/known_limitations
+sed -i 's/$/ dwc_otg.fiq_enable=0 dwc_otg.fiq_fsm_enable=0/' /raspios/mnt/boot/firmware/cmdline.txt
 
 umount /raspios/mnt/disk
 umount /raspios/mnt/boot/firmware
diff --git a/config.txt b/config.txt
index d7501e1..1534cda 100755
--- a/config.txt
+++ b/config.txt
@@ -1,18 +1,5 @@
-# Known issues
-# Disable USB FIQ support for Pi0, Pi2, Pi3
-# https://wiki.linuxfoundation.org/realtime/documentation/known_limitations
-
 [pi0]
-dwc_otg.fiq_enable=0
-dwc_otg.fiq_fsm_enable=0
 auto_initramfs=1
 
-[pi2]
-dwc_otg.fiq_enable=0
-dwc_otg.fiq_fsm_enable=0
-
-[pi3]
-dwc_otg.fiq_enable=0
-dwc_otg.fiq_fsm_enable=0
-
 [all]
+