#
# Copyright 2026 Aarav Ravindra Kharade
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#


# ArkOS Raspberry Pi 4 Model B Boot Configuration
# -------------------------------------------------
# Read by VideoCore VI GPU firmware (start4.elf) at power-on.

# Suppress VideoCore GPU rainbow test pattern splash screen
disable_splash=1

# Force 64-bit ARM mode (AArch64)
arm_64bit=1

# Enable GICv2 interrupt controller
enable_gic=1

# Enable UART serial console on GPIO 14 (TXD) / GPIO 15 (RXD) at 115200 baud
enable_uart=1

# Kernel image & RAM disk
kernel=kernel8.img
initramfs initramfs.img followkernel

# Device tree blob
device_tree=bcm2711-rpi-4-b.dtb

# Enable VC4 KMS display driver overlay for HDMI output
dtoverlay=vc4-kms-v3d

# HDMI Display Compatibility (HDMI 0 port next to USB-C power input)
hdmi_force_hotplug=1
hdmi_drive=2
config_hdmi_boost=7

# GPU Memory allocation
gpu_mem=128
max_framebuffers=2

# Framebuffer console (/dev/fb0)
framebuffer_width=1920
framebuffer_height=1080
framebuffer_depth=32
framebuffer_ignore_alpha=1