build_db845c.sh

#!/bin/bash

# Exit on any error
set -e

# Script expects path of kernel repo to be `linux` and located next to the location of this script

# Normally configured using 
$PRODUCT=db845c

echo ""
echo "== Building kernel for $PRODUCT =="
echo ""
echo ""

ARCH="arm64"
CROSS_COMPILE="ccache aarch64-linux-gnu-"

SCRIPT=$(readlink -f $0)
SCRIPTPATH=`dirname $SCRIPT`

cd $SCRIPTPATH/linux

NCPUS=$(nproc --ignore 2)

#make -j$NCPUS Image.gz dtbs modules
make -j$NCPUS Image.gz dtbs

TMPPATH=$SCRIPTPATH/tmp
mkdir -p $TMPPATH

#MODULEPATH=$TMPPATH/modules
#mkdir -p $MODULEPATH
#make modules_install INSTALL_MOD_STRIP=1 INSTALL_MOD_PATH=$MODULEPATH


IMAGE=arch/arm64/boot/Image.gz
DTB=arch/arm64/boot/dts/qcom/sdm845-db845c.dtb

ls -la $IMAGE
ls -la $DTB

cat $IMAGE $DTB > $TMPPATH/Image.gz+dtb


OUTPUTPATH=$TMPPATH
#mkbootimg --kernel $TMPPATH/Image.gz+dtb \
#          --output $OUTPUTPATH/boot-db845c.img \
#          --pagesize 4096 \
#          --base 0x80000000 \
#          --cmdline "root=PARTLABEL=rootfs console=tty0 console=ttyMSM0,115200n8 clk_ignore_unused pd_ignore_unused debug"


#wget http://releases.linaro.org/96boards/dragonboard845c/linaro/debian/19.11/initrd.img-5.2.0-qcomlt-arm64 -O $TMPPATH/initrd.img


OUTPUT_IMAGE=$OUTPUTPATH/boot_$PRODUCT.img
mkbootimg --kernel $TMPPATH/Image.gz+dtb \
          --ramdisk $TMPPATH/initrd.img \
          --output $OUTPUTPATH/boot_$PRODUCT.img \
          --pagesize 4096 \
          --base 0x80000000 \
          --cmdline "root=PARTLABEL=rootfs console=tty0 console=ttyMSM0,115200n8 clk_ignore_unused pd_ignore_unused debug"


echo ""
echo "Wrote image to: $OUTPUT_IMAGE"