From d6719fd49f6394bbd91f90384b5f5a6a5baaad36 Mon Sep 17 00:00:00 2001
From: Takumi Sueda <puhitaku@gmail.com>
Date: Fri, 28 Jul 2023 22:18:52 +0900
Subject: [PATCH] Enhance build scripts to generate a buildroot SD image

---
 Makefile             | 15 ++++++++++++---
 image/build_image.sh | 13 ++++++++-----
 2 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index 3cc25d3..a7ea1ed 100644
--- a/Makefile
+++ b/Makefile
@@ -135,7 +135,6 @@ lilobuild:
 liloclean:
 	make -C ./brainlilo clean
 
-
 brainux:
 	@if [ "$(shell uname)" != "Linux" ]; then \
 		echo "Debootstrap is only available in Linux!"; \
@@ -155,11 +154,21 @@ brainux:
 	sudo rm brainux/setup_brainux.sh
 	sudo ./os-brainux/override.sh ./os-brainux/override ./brainux
 
+buildroot_rootfs:
+	make -C buildroot brain_imx28_defconfig
+	make -C buildroot -j 12
+	sudo mkdir -p buildroot_rootfs
+	sudo tar -C ./buildroot_rootfs -xf buildroot/output/images/rootfs.tar
+
 image/sd.img: clean_work
-	./image/build_image.sh
+	./image/build_image.sh brainux sd.img 3072
 
 image/sd_x1.img: clean_work
-	./image/build_image_x1.sh
+	./image/build_image_x1.sh brainux sd_x1.img 3072
+
+image/sd_buildroot.img: clean_work
+	./image/build_image.sh buildroot_rootfs sd_buildroot.img 128
+
 
 .PHONY:
 clean_work:
diff --git a/image/build_image.sh b/image/build_image.sh
index a3f12f0..9cb4f33 100755
--- a/image/build_image.sh
+++ b/image/build_image.sh
@@ -5,7 +5,10 @@ JOBS=$(nproc)
 REPO=$(git rev-parse --show-toplevel)
 WORK=${REPO}/image/work
 LINUX=${REPO}/linux-brain
-IMG=${REPO}/image/sd.img
+ROOTFS=$1
+IMG_NAME=$2
+IMG=${REPO}/image/${IMG_NAME}
+SIZE_M=$3
 export CROSS_COMPILE=arm-linux-gnueabi-
 
 mkdir -p ${WORK}
@@ -34,7 +37,7 @@ for i in "a7200" "sh1" "sh2" "sh3" "sh4" "sh5" "sh6" "sh7"; do
     esac
 done
 
-dd if=/dev/zero of=${IMG} bs=1M count=3072
+dd if=/dev/zero of=${IMG} bs=1M count=${SIZE_M}
 
 START1=2048
 SECTORS1=$((1024 * 1024 * 64 / 512))
@@ -49,7 +52,7 @@ sfdisk ${IMG} < ${WORK}/part.sfdisk
 
 sudo kpartx -av ${IMG}
 
-LOOPDEV=$(losetup -l | grep sd.img | grep -o 'loop.' | tail -n 1)
+LOOPDEV=$(losetup -l | grep ${IMG_NAME} | grep -o 'loop.' | tail -n 1)
 
 sudo mkfs.fat -n boot -F32 -v -I /dev/mapper/${LOOPDEV}p1
 sudo mkfs.ext4 -L rootfs /dev/mapper/${LOOPDEV}p2
@@ -71,13 +74,13 @@ sudo touch "${LILO}/index.din"
 sudo touch "${LILO}/AppMain.cfg"
 sudo cp ${REPO}/brainlilo/*.dll "${LILO}/"
 sudo cp ${REPO}/brainlilo/BrainLILO.exe "${LILO}/AppMain_.exe"
-gzip -d ${REPO}/image/exeopener.exe.gz
+gzip -cd ${REPO}/image/exeopener.exe.gz > ${REPO}/image/exeopener.exe
 sudo cp ${REPO}/image/exeopener.exe "${LILO}/AppMain.exe"
 
 sudo mkdir -p ${WORK}/p1/loader
 sudo cp ${WORK}/lilobin/*.bin ${WORK}/p1/loader/
 
-sudo cp -ra ${REPO}/brainux/* ${WORK}/p2/
+sudo cp -ra ${REPO}/${ROOTFS}/* ${WORK}/p2/
 
 sudo umount ${WORK}/p1 ${WORK}/p2
 sudo kpartx -d ${IMG}