!3 安装后自动更新boot分区&卸载后恢复到旧版本

Merge pull request !3 from woqidaideshi/dev

README.en.md

@@ -16,23 +16,12 @@ AArch64
 
 #### Instructions
 
-1. The version of raspberrypi kernel ends with `.raspi`, e.g., `4.19.90-2005.2.0.0036.raspi.aarch64 `.
-2. The module files will be installed into `/lib/modules`. The directory name of these module files is the same as the version of raspberrypi kernel, such as `4.19.90-2005.2.0.0036.raspi.aarch64`.
-3. The image file will be installed into `/boot`, whose filename is like `vmlinuz-4.19.90-2005.2.0.0036.raspi.aarch64`. Note that the image file is in GZ compression format by default. You can decompress this  file, and then rename it to `kernel8.img` as follows.
+1. The version of raspberrypi kernel is in the front of `.raspi.aarch64` such as `4.19.90-2005.2.0.0001.raspi.aarch64`.
+2. The module files will be installed into `/lib/modules/` such as `/lib/modules/4.19.90-2005.2.0.0001.raspi.aarch64`, where `4.19.90-2005.2.0.0039.raspi` is the version of raspberrypi kernel.
+3. The image file will be installed into `/boot/` such as `/boot/vmlinuz-4.19.90-2005.2.0.0001.raspi.aarch64`. Meanwhile, the `/boot/kernel8.img` will be overrided by the image file.
+4. The device tree files will be installed into `/boot/` such as `/boot/dtb-4.19.90-2005.2.0.0001.raspi.aarch64`. Meanwhile, the `.dtb` files and `overlays` folder in this `dtb-4.19.90-2005.2.0.0001.raspi.aarch64` directory will replace the corresponding files in `/boot/`.
 
-    ```
-    cd /boot
-    cp vmlinuz-4.19.90-2005.2.0.0036.raspi.aarch64 Image.gz
-    gunzip Image.gz
-    mv Image kernel8.img
-    ```
 
-4. The device tree files will be installed into `/boot`. The directory name of these files looks like `dtb-4.19.90-2005.2.0.0036.raspi.aarch64`. You need to copy the device tree files to `/boot` as follows.
-
-    ```
-    cd /boot
-    cp dtb-4.19.90-2005.2.0.0036.raspi.aarch64/*.dtb ./
-    ```
 
 #### Contribution
 

README.md

@@ -18,25 +18,10 @@ AArch64
 
 安装 raspberrypi-kernel 后，
 
-1. 内核版本号后缀增加 `.raspi` 标识，形如 `4.19.90-2005.2.0.0036.raspi.aarch64`。
-2. 内核模块安装在 `/lib/modules` 目录下，对应文件夹名称同内核版本号，如 `4.19.90-2005.2.0.0036.raspi.aarch64`。
-3. 内核映像文件在 `/boot` 目录下，映像文件名形如 `vmlinuz-4.19.90-2005.2.0.0036.raspi.aarch64`。注意，该文件默认是采用 GZ 压缩格式的压缩文件，需要解压缩后重命名为 `kernel8.img`。
-
-    具体过程：
-    ```
-    cd /boot
-    cp vmlinuz-4.19.90-2005.2.0.0036.raspi.aarch64 Image.gz
-    gunzip Image.gz
-    mv Image kernel8.img
-    ```
-
-4. 设备树文件在 `/boot` 目录下的文件夹下，该文件夹名称形如 `dtb-4.19.90-2005.2.0.0036.raspi.aarch64`，需要将其中的设备树文件拷贝到 `/boot` 目录下。
-
-    具体过程：
-    ```
-    cd /boot
-    cp dtb-4.19.90-2005.2.0.0036.raspi.aarch64/*.dtb ./
-    ```
+1. 内核版本号后缀增加 `.raspi` 标识，形如 `4.19.90-2005.2.0.0001.raspi.aarch64`。
+2. 内核模块安装在 `/lib/modules/` 目录下，对应文件夹名称同内核版本号，如 `4.19.90-2005.2.0.0001.raspi.aarch64`。
+3. 内核映像文件在 `/boot/` 目录下，映像文件名形如 `vmlinuz-4.19.90-2005.2.0.0001.raspi.aarch64`。同时，该文件会替换原来的 `/boot/kernel8.img` 文件。
+4. 设备树文件在 `/boot/` 目录下的文件夹下，该文件夹名称形如 `dtb-4.19.90-2005.2.0.0001.raspi.aarch64`。同时，该文件夹下的 `.dtb` 文件和 `overlays` 文件夹会替换 `/boot/` 下对应的文件。
 
 #### 参与贡献
 

raspberrypi-kernel.spec

@@ -8,7 +8,7 @@
 
 Name:	 raspberrypi-kernel
 Version: 4.19.90
-Release: %{hulkrelease}.0036
+Release: %{hulkrelease}.0001
 Summary: Linux Kernel
 License: GPLv2
 URL:	 http://www.kernel.org/
@@ -57,12 +57,8 @@ cd linux-%{KernelVer}
 perl -p -i -e "s/^EXTRAVERSION.*/EXTRAVERSION = -%{release}.raspi.%{_target_cpu}/" Makefile
 
 make ARCH=%{Arch} %{?_smp_mflags} openeuler-raspi_defconfig
-make ARCH=%{Arch} dtbs
 
-TargetImage=$(basename $(make -s image_name))
-
-make ARCH=%{Arch} $TargetImage %{?_smp_mflags}
-make ARCH=%{Arch} modules %{?_smp_mflags}
+make ARCH=%{Arch} %{?_smp_mflags}
 
 %install
 cd linux-%{KernelVer}
@@ -73,7 +69,9 @@ make ARCH=%{Arch} INSTALL_MOD_PATH=$RPM_BUILD_ROOT modules_install KERNELRELEASE
 rm -rf $RPM_BUILD_ROOT/lib/modules/%{KernelVer}/source $RPM_BUILD_ROOT/lib/modules/%{KernelVer}/build
 
 mkdir -p $RPM_BUILD_ROOT/boot
-install -m 755 $(make -s image_name) $RPM_BUILD_ROOT/boot/vmlinuz-%{KernelVer}
+TargetImage=$(make -s image_name)
+TargetImage=${TargetImage%.*}
+install -m 755 $TargetImage $RPM_BUILD_ROOT/boot/vmlinuz-%{KernelVer}
 install -m 644 .config $RPM_BUILD_ROOT/boot/config-%{KernelVer}
 install -m 644 System.map $RPM_BUILD_ROOT/boot/System.map-%{KernelVer}
 
@@ -82,6 +80,79 @@ install -m 644 $(find arch/%{Arch}/boot/dts/broadcom/ -name "*.dtb") $RPM_BUILD_
 install -m 644 $(find arch/%{Arch}/boot/dts/overlays/ -name "*.dtbo") $RPM_BUILD_ROOT/boot/dtb-%{KernelVer}/overlays/
 install -m 644 arch/%{Arch}/boot/dts/overlays/README $RPM_BUILD_ROOT/boot/dtb-%{KernelVer}/overlays/
 
+%postun
+version_old=0
+if [ "$1" == "0" ]; then
+    version_old=old
+else
+    version_tmp=0
+    name_len=`echo -n %{name}-|wc -c`
+    for item in `rpm -qa %{name} 2>/dev/null`
+    do
+        cur_version=${item:name_len}
+        cpu_version=${cur_version##*.}
+        if [ "$cpu_version" == "%{_target_cpu}" ]; then
+            cur_version=${cur_version%.*}
+            cur_version=$cur_version.raspi.$cpu_version
+            if [[ "$cur_version" != "%{KernelVer}" && "$cur_version" > "$version_tmp" ]]; then
+                version_tmp=$cur_version
+            fi
+        fi
+    done
+    if [[ "$version_tmp" < "%{KernelVer}" ]]; then
+        version_old=$version_tmp
+    fi
+fi
+if [ "$version_old" != "0" ]; then
+    if [ -f /boot/vmlinuz-$version_old ] && [ -d /boot/dtb-$version_old ] && ( [ "$version_old" == "old" ] || [ -d /lib/modules/$version_old ] ); then
+        ls /boot/dtb-$version_old/overlays/*.dtbo > /dev/null 2>&1
+        if [ "$?" == "0" ]; then
+            ls /boot/dtb-$version_old/*.dtb > /dev/null 2>&1
+            if [ "$?" == "0" ]; then
+                rm -rf /boot/*.dtb /boot/overlays /boot/kernel8.img
+                mkdir /boot/overlays
+                install -m 755 /boot/vmlinuz-$version_old /boot/kernel8.img
+                for file in `ls /boot/dtb-$version_old/*.dtb 2>/dev/null`
+                do
+                    if [ -f $file ]; then
+                        install -m 644 $file /boot/`basename $file`
+                    fi
+                done
+                install -m 644 $(find /boot/dtb-$version_old/overlays/ -name "*.dtbo") /boot/overlays/
+                install -m 644 /boot/dtb-$version_old/overlays/README /boot/overlays/
+            else
+                echo "warning: files in /boot/dtb-$version_old/*.dtb missing when resetting kernel as $version_old, something may go wrong when starting this device next time."
+            fi
+        else
+            echo "warning: files in /boot/dtb-$version_old/overlays missing when resetting kernel as $version_old, something may go wrong when starting this device next time."
+        fi
+    else
+        echo "warning: files missing when resetting kernel as $version_old, something may go wrong when starting this device next time."
+    fi
+fi
+
+%posttrans
+if [ "$1" == "1" ]; then
+    if [ ! -f /boot/vmlinuz-old ] && [ -f /boot/kernel8.img ]; then
+        mkdir /boot/dtb-old
+        mv /boot/*.dtb /boot/dtb-old
+        mv /boot/overlays /boot/dtb-old/
+        mv /boot/kernel8.img /boot/vmlinuz-old
+    fi
+fi
+rm -rf /boot/*.dtb /boot/overlays /boot/kernel8.img
+mkdir -p /boot/overlays
+install -m 755 /boot/vmlinuz-%{KernelVer} /boot/kernel8.img
+for file in `ls /boot/dtb-%{KernelVer}/*.dtb 2>/dev/null`
+do
+    if [ -f $file ]; then
+        install -m 644 $file /boot/`basename $file`
+    fi
+done
+install -m 644 $(find /boot/dtb-%{KernelVer}/overlays/ -name "*.dtbo") /boot/overlays/
+install -m 644 /boot/dtb-%{KernelVer}/overlays/README /boot/overlays/
+
+
 %files
 %defattr (-, root, root)
 %doc
@@ -89,7 +160,7 @@ install -m 644 arch/%{Arch}/boot/dts/overlays/README $RPM_BUILD_ROOT/boot/dtb-%{
 /boot/System.map-*
 /boot/vmlinuz-*
 /boot/dtb-*
-/lib/modules/%{KernelVer}/
+/lib/modules/%{KernelVer}
 
 %changelog
 * Thu Jun 11 2020 EulixOS Buildteam <isrc-support@iscas.ac.cn> - 4.19.90-2003.4.0.0036-raspi