From 9e8de766e5563c60d8161ed6b9d3d10e44d3d8de Mon Sep 17 00:00:00 2001
From: "ithink.chan" <chenyang@autoai.com>
Date: Thu, 5 Mar 2020 09:53:42 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=89=93=E5=8C=85=E5=92=8C?=
 =?UTF-8?q?=E8=A7=A3=E5=8C=85=20initramfs=20=E5=B7=A5=E5=85=B7.?=
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Signed-off-by: ithink.chan <chenyang@autoai.com>
---
 .../OperatingSystem/Linux/RAMFS/uirfs.sh      | 99 +++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100755 Software/Development/OperatingSystem/Linux/RAMFS/uirfs.sh

diff --git a/Software/Development/OperatingSystem/Linux/RAMFS/uirfs.sh b/Software/Development/OperatingSystem/Linux/RAMFS/uirfs.sh
new file mode 100755
index 0000000..9aed179
--- /dev/null
+++ b/Software/Development/OperatingSystem/Linux/RAMFS/uirfs.sh
@@ -0,0 +1,99 @@
+#!/bin/sh
+
+# This tool is used to pack folder to initramfs or unpack initramfs to folder(arm64). See usage() for more information.
+# Depend: mkimage,dd,gzip
+
+usage()
+{
+    echo "uirfs.sh [action] [file] [folder]"
+    echo "	action	pack|unpack	"
+    echo "	file	initramfs or uInitramfs file for unpack, uInitramfs for pack"
+    echo "	folder	folder for initramfs pack/unpack (unpack will erase an existing folder)"
+
+    if [ -n "$1" ]; then
+        echo "\n\t $1 \n"
+    fi
+
+    exit 1
+}
+
+unpack()
+{
+    if [ ! -f $1 ] ; then
+        usage "Missing file $1"
+    fi
+
+    if [ ! -d $2 ] && [ -e $2 ]; then
+        usage "$2 is an existing file, expecting folder"
+    fi
+
+    if [ -e $2 ] && [ -n "$(ls -A $2)" ] ; then
+        echo ""
+        read -r -p "Folder $2 is not empty, erase it? [y/N]:" yesno
+        case "$yesno" in
+            [yY])
+                rm -rf $2 || usage "Failed to cleanup $2"
+                ;;
+            *)
+                usage "Abort due to unhappines of folder erasure"
+                ;;
+        esac
+    fi
+
+    mkdir -p $2
+    cd $2
+
+    if file -b $1 | cut -f 1 -d " " | grep -q "u-boot"; then
+        dd if=$1 bs=1 skip=64 | gzip -cd | cpio -imd --quiet
+    elif file -b $1 | cut -f 1 -d " " | grep -q "gzip"; then
+        gzip -cd $1 | cpio -imd --quiet
+    else
+        usage "Wrong file <$1>"
+    fi
+
+    echo "\n\tuInitramfs unpacked to:"
+    echo "\t $2"
+}
+
+pack()
+{
+    if [ ! -d $2 ]; then
+        usage "$2 is not an existing folder"
+    fi
+
+    if [ -e $1 ] ; then
+        echo ""
+        read -r -p "Path $1 is existing, remove it? [y/N]:" yesno
+        case "$yesno" in
+            [yY])
+                rm -f $1 || usage "Failed to remove $1, a folder?"
+                ;;
+            *)
+                usage "Abort due to unhappines of a path removing"
+                ;;
+        esac
+    fi
+
+    cd $2
+    FILE=`mktemp`
+    find . | cpio --quiet -R 0:0 -H newc -o | gzip -9 -n > $FILE
+    mkimage -A arm64 -O linux -T ramdisk -C gzip -n "uInitramfs" -d $FILE $1
+    rm -f $FILE
+
+    echo "\n\tPacked uInitramfs file:"
+    echo "\t $1"
+}
+
+
+if [ "$#" != "3" ]
+then
+    usage "Not enough parameters"
+fi
+
+if [ "$1" = "pack" ] ; then
+    pack `realpath $2` `realpath $3`
+elif [ "$1" = "unpack" ] ; then
+    unpack `realpath $2` `realpath $3`
+else
+    usage "Wrong action <$1>"
+fi