Arch Linux 在红米5 Plus (MSM8953) 上的移植
2024-02-13
前言
在 Android 上运行 Linux 发行版这件事我大概从 18 年就开始了，但是当时是使用 termux+proot 的组合，后面写了个脚本来调用 unshare，使用 magisk 来随系统启动，一直到现在hhh
前些天收拾东西发现有个被遗忘的红米 5 PLus，但是无限重启，在下载固件时发现 Vince 有 postmarkedOS 的支持，故事从此开始~
pmOS 是一个基于 Alpine 的发行版，Alpine 是个使用musl 和openrc 而非 glibc+systemd 的 Linux 发行版，但这问题不大本人日常用 Void Linux 也是 musl+runit 的组合，但是把 Alpine 用在容器以外的地方还是感觉有的怪（x，还是用 Arch Linux 比较棒（
好了，开始正文部分
要在手机上跑起来 Linux 发行版（说起来 Android 被开除 Linux 籍了）首先要准备一个 bootloader，其次是一个 Linux Kernel，最后再来一个 rootfs 就好了
bootloader 目前可用的有 lk2nd 和 edk2（SDM835以上），Vince 是 sd625，选 lk2nd。我这里直接用 pmOS 编译好的 lk2nd 镜像，下面就开始内核以及 rootfs 的准备
环境准备
我这里使用了 Debian12 (AMD64) 来进行交叉编译，有条件可以直接使用 ARM64 的设备（比如手机或者 ARM 的主机/服务器）来编译
安装依赖
交叉编译环境：
1sudo apt install build-essential openssl pkg-config libssl-dev libncurses5-dev pkg-config minizip libelf-dev flex bison libc6-dev libidn11-dev rsync bc liblz4-tool
2sudo apt install gcc-aarch64-linux-gnu dpkg dpkg-dev git debhelper
rootfs 构建：
1sudo apt install arch-install-scripts qemu-user-static android-platform-system-core mkbootimg
内核构建
内核源码： https://github.com/msm8953-mainline/linux
config： postmarketOS/pmaports
如果使用 Archlinux 也可以用 makepkg 构建，PKGBUILD 如下：
1# AArch64 MSM8953
2# Maintainer: Zmyeir <[email protected]>
3
4buildarch=8
5
6pkgbase=linux-aarch64
7pkgver=6.7.2
8pkgrel=1
9_kernelname=${pkgbase#linux}
10_desc="AArch64 qcom msm8953"
11_srcdir=linux-${pkgver}-r0
12arch=('aarch64')
13url="https://github.com/msm8953-mainline/linux"
14license=('GPL2')
15makedepends=('bc' 'dtc' 'kmod' 'inetutils' 'git' 'tar' 'xz' 'xmlto')
16options=('!strip')
17source=("https://github.com/msm8953-mainline/linux/archive/refs/tags/v${pkgver}-r0.tar.gz"
18 'config'
19)
20sha256sums=('SKIP'
21 'SKIP')
22
23prepare() {
24 cd $_srcdir
25
26 echo "Setting version..."
27 #scripts/setlocalversion --save-scmversion
28 echo "-$pkgrel" > localversion.10-pkgrel
29 echo "${pkgbase#linux}" > localversion.20-pkgname
30 cat "${srcdir}/config" > ./.config
31}
32
33build() {
34 cd ${_srcdir}
35
36 # get kernel version
37 make prepare
38 make -s kernelrelease > version
39
40 # build!
41 unset LDFLAGS
42 make ${MAKEFLAGS} Image Image.gz modules
43 # Generate device tree blobs with symbols to support applying device tree overlays in U-Boot
44 make ${MAKEFLAGS} DTC_FLAGS="-@" dtbs
45}
46
47_package() {
48 pkgdesc="The Linux Kernel and modules - ${_desc}"
49 depends=('coreutils' 'initramfs' 'kmod' 'mkinitcpio>=0.7')
50 optdepends=('wireless-regdb: to set the correct wireless channels of your country'
51 'linux-firmware: firmware images needed for some devices')
52 provides=("linux=${pkgver}" "WIREGUARD-MODULE")
53 conflicts=('linux')
54
55 cd $_srcdir
56 local kernver="$(<version)"
57 local modulesdir="$pkgdir/usr/lib/modules/$kernver"
58
59 echo "Installing boot image and dtbs..."
60 install -Dm644 arch/arm64/boot/Image{,.gz} -t "${pkgdir}/boot"
61 install -Dt "$modulesdir/dtbs" arch/arm64/boot/dts/qcom/msm8953*.dtb
62
63 # Used by mkinitcpio to name the kernel
64 echo "$pkgbase" | install -Dm644 /dev/stdin "$modulesdir/pkgbase"
65
66 echo "Installing modules..."
67 make INSTALL_MOD_PATH="$pkgdir/usr" INSTALL_MOD_STRIP=1 modules_install
68
69 # remove build and source links
70 rm "$modulesdir"/{source,build} || true
71
72}
73
74_package-headers() {
75 pkgdesc="Header files and scripts for building modules for linux kernel - ${_desc}"
76 depends=(pahole)
77
78 cd $_srcdir
79 local builddir="$pkgdir/usr/lib/modules/$(<version)/build"
80
81 echo "Installing build files..."
82 install -Dt "$builddir" -m644 .config Makefile Module.symvers System.map \
83 localversion.* version vmlinux
84 install -Dt "$builddir/kernel" -m644 kernel/Makefile
85 install -Dt "$builddir/arch/arm64" -m644 arch/arm64/Makefile
86 cp -t "$builddir" -a scripts
87
88 echo "Installing headers..."
89 cp -t "$builddir" -a include
90 cp -t "$builddir/arch/arm64" -a arch/arm64/include
91 install -Dt "$builddir/arch/arm64/kernel" -m644 arch/arm64/kernel/asm-offsets.s
92 mkdir -p "$builddir/arch/arm"
93 cp -t "$builddir/arch/arm" -a arch/arm/include
94
95 install -Dt "$builddir/drivers/md" -m644 drivers/md/*.h
96 install -Dt "$builddir/net/mac80211" -m644 net/mac80211/*.h
97
98 # https://bugs.archlinux.org/task/13146
99 install -Dt "$builddir/drivers/media/i2c" -m644 drivers/media/i2c/msp3400-driver.h
100
101 # https://bugs.archlinux.org/task/20402
102 install -Dt "$builddir/drivers/media/usb/dvb-usb" -m644 drivers/media/usb/dvb-usb/*.h
103 install -Dt "$builddir/drivers/media/dvb-frontends" -m644 drivers/media/dvb-frontends/*.h
104 install -Dt "$builddir/drivers/media/tuners" -m644 drivers/media/tuners/*.h
105
106 # https://bugs.archlinux.org/task/71392
107 install -Dt "$builddir/drivers/iio/common/hid-sensors" -m644 drivers/iio/common/hid-sensors/*.h
108
109 echo "Installing KConfig files..."
110 find . -name 'Kconfig*' -exec install -Dm644 {} "$builddir/{}" \;
111
112 echo "Removing unneeded architectures..."
113 local arch
114 for arch in "$builddir"/arch/*/; do
115 [[ $arch = */arm64/ || $arch == */arm/ ]] && continue
116 echo "Removing $(basename "$arch")"
117 rm -r "$arch"
118 done
119
120 echo "Removing documentation..."
121 rm -r "$builddir/Documentation"
122
123 echo "Removing broken symlinks..."
124 find -L "$builddir" -type l -printf 'Removing %P\n' -delete
125
126 echo "Removing loose objects..."
127 find "$builddir" -type f -name '*.o' -printf 'Removing %P\n' -delete
128
129 echo "Stripping build tools..."
130 local file
131 while read -rd '' file; do
132 case "$(file -bi "$file")" in
133 application/x-sharedlib\;*) # Libraries (.so)
134 strip -v $STRIP_SHARED "$file" ;;
135 application/x-archive\;*) # Libraries (.a)
136 strip -v $STRIP_STATIC "$file" ;;
137 application/x-executable\;*) # Binaries
138 strip -v $STRIP_BINARIES "$file" ;;
139 application/x-pie-executable\;*) # Relocatable binaries
140 strip -v $STRIP_SHARED "$file" ;;
141 esac
142 done < <(find "$builddir" -type f -perm -u+x ! -name vmlinux -print0)
143
144 echo "Adding symlink..."
145 mkdir -p "$pkgdir/usr/src"
146 ln -sr "$builddir" "$pkgdir/usr/src/$pkgbase"
147}
148
149pkgname=("${pkgbase}" "${pkgbase}-headers")
150for _p in ${pkgname[@]}; do
151 eval "package_${_p}() {
152 _package${_p#${pkgbase}}
153 }"
154done
源码拉取
拉取 v6.7.2-r0 分支（本文发布时最新签出）
1mkdir ~/vince
2cd ~/vince
3git clone https://github.com/msm8953-mainline/linux.git -b v6.7.2-r0 --depth 1
4cd linux
处理 Config
使用@HandsomeHacker的脚本处理 config：
1./check.sh </path/to/file> -w
脚本如下：
1#!/bin/bash
2
3FILE=$1
4
5[ -f "$FILE" ] || {
6 echo "Provide a config file as argument"
7 exit
8}
9
10write=false
11
12if [ "$2" = "-w" ]; then
13 write=true
14fi
15
16CONFIGS_ON="
17CONFIG_IKCONFIG
18CONFIG_CPUSETS
19CONFIG_AUTOFS4_FS
20CONFIG_TMPFS_XATTR
21CONFIG_TMPFS_POSIX_ACL
22CONFIG_CGROUP_DEVICE
23CONFIG_CGROUP_MEM_RES_CTLR
24CONFIG_CGROUP_MEM_RES_CTLR_SWAP
25CONFIG_CGROUP_MEM_RES_CTLR_KMEM
26CONFIG_RTC_DRV_CMOS
27CONFIG_BLK_CGROUP
28CONFIG_CGROUP_PERF
29CONFIG_IKCONFIG_PROC
30CONFIG_SYSVIPC
31CONFIG_CGROUPS
32CONFIG_CGROUP_FREEZER
33CONFIG_NAMESPACES
34CONFIG_UTS_NS
35CONFIG_IPC_NS
36CONFIG_USER_NS
37CONFIG_PID_NS
38CONFIG_NET_NS
39CONFIG_AUDIT
40CONFIG_AUDITSYSCALL
41CONFIG_AUDIT_TREE
42CONFIG_AUDIT_WATCH
43CONFIG_CC_STACKPROTECTOR
44CONFIG_DEBUG_RODATA
45CONFIG_DEVTMPFS
46CONFIG_DEVTMPFS_MOUNT
47CONFIG_DEVPTS_MULTIPLE_INSTANCES
48CONFIG_ECRYPT_FS
49CONFIG_ECRYPT_FS_MESSAGING
50CONFIG_ENCRYPTED_KEYS
51CONFIG_EXT4_FS_POSIX_ACL
52CONFIG_EXT4_FS_SECURITY
53CONFIG_FSNOTIFY
54CONFIG_DNOTIFY
55CONFIG_INOTIFY_USER
56CONFIG_FANOTIFY
57CONFIG_FANOTIFY_ACCESS_PERMISSIONS
58CONFIG_KEYS
59CONFIG_SWAP
60CONFIG_VT
61CONFIG_VT_CONSOLE
62CONFIG_SECCOMP
63CONFIG_STRICT_DEVMEM
64CONFIG_SYN_COOKIES
65CONFIG_BT
66CONFIG_BT_RFCOMM
67CONFIG_BT_RFCOMM_TTY
68CONFIG_BT_BNEP
69CONFIG_BT_BNEP_MC_FILTER
70CONFIG_BT_BNEP_PROTO_FILTER
71CONFIG_BT_HIDP
72CONFIG_XFRM_USER
73CONFIG_NET_KEY
74CONFIG_INET
75CONFIG_IP_ADVANCED_ROUTER
76CONFIG_IP_MULTIPLE_TABLES
77CONFIG_INET_AH
78CONFIG_INET_ESP
79CONFIG_INET_IPCOMP
80CONFIG_INET_XFRM_MODE_TRANSPORT
81CONFIG_INET_XFRM_MODE_TUNNEL
82CONFIG_INET_XFRM_MODE_BEET
83CONFIG_IPV6
84CONFIG_INET6_AH
85CONFIG_INET6_ESP
86CONFIG_INET6_IPCOMP
87CONFIG_INET6_XFRM_MODE_TRANSPORT
88CONFIG_INET6_XFRM_MODE_TUNNEL
89CONFIG_INET6_XFRM_MODE_BEET
90CONFIG_IPV6_MULTIPLE_TABLES
91CONFIG_NETFILTER
92CONFIG_NETFILTER_ADVANCED
93CONFIG_NETFILTER_NETLINK
94CONFIG_NETFILTER_NETLINK_ACCT
95CONFIG_NETFILTER_NETLINK_LOG
96CONFIG_NETFILTER_NETLINK_QUEUE
97CONFIG_NETFILTER_TPROXY
98CONFIG_NETFILTER_XTABLES
99CONFIG_NETFILTER_XT_CONNMARK
100CONFIG_NETFILTER_XT_MARK
101CONFIG_NETFILTER_XT_MATCH_ADDRTYPE
102CONFIG_NETFILTER_XT_MATCH_CLUSTER
103CONFIG_NETFILTER_XT_MATCH_COMMENT
104CONFIG_NETFILTER_XT_MATCH_CONNBYTES
105CONFIG_NETFILTER_XT_MATCH_CONNLIMIT
106CONFIG_NETFILTER_XT_MATCH_CONNMARK
107CONFIG_NETFILTER_XT_MATCH_CONNTRACK
108CONFIG_NETFILTER_XT_MATCH_CPU
109CONFIG_NETFILTER_XT_MATCH_DCCP
110CONFIG_NETFILTER_XT_MATCH_DEVGROUP
111CONFIG_NETFILTER_XT_MATCH_DSCP
112CONFIG_NETFILTER_XT_MATCH_ECN
113CONFIG_NETFILTER_XT_MATCH_ESP
114CONFIG_NETFILTER_XT_MATCH_HASHLIMIT
115CONFIG_NETFILTER_XT_MATCH_HELPER
116CONFIG_NETFILTER_XT_MATCH_HL
117CONFIG_NETFILTER_XT_MATCH_IPRANGE
118CONFIG_NETFILTER_XT_MATCH_LENGTH
119CONFIG_NETFILTER_XT_MATCH_LIMIT
120CONFIG_NETFILTER_XT_MATCH_MAC
121CONFIG_NETFILTER_XT_MATCH_MARK
122CONFIG_NETFILTER_XT_MATCH_MULTIPORT
123CONFIG_NETFILTER_XT_MATCH_NFACCT
124CONFIG_NETFILTER_XT_MATCH_OSF
125CONFIG_NETFILTER_XT_MATCH_OWNER
126CONFIG_NETFILTER_XT_MATCH_PKTTYPE
127CONFIG_NETFILTER_XT_MATCH_POLICY
128CONFIG_NETFILTER_XT_MATCH_QUOTA
129CONFIG_NETFILTER_XT_MATCH_QUOTA2
130CONFIG_NETFILTER_XT_MATCH_RATEEST
131CONFIG_NETFILTER_XT_MATCH_REALM
132CONFIG_NETFILTER_XT_MATCH_RECENT
133CONFIG_NETFILTER_XT_MATCH_SCTP
134CONFIG_NETFILTER_XT_MATCH_SOCKET
135CONFIG_NETFILTER_XT_MATCH_STATE
136CONFIG_NETFILTER_XT_MATCH_STATISTIC
137CONFIG_NETFILTER_XT_MATCH_STRING
138CONFIG_NETFILTER_XT_MATCH_TCPMSS
139CONFIG_NETFILTER_XT_MATCH_TIME
140CONFIG_NETFILTER_XT_MATCH_U32
141CONFIG_NETFILTER_XT_TARGET_AUDIT
142CONFIG_NETFILTER_XT_TARGET_CHECKSUM
143CONFIG_NETFILTER_XT_TARGET_CLASSIFY
144CONFIG_NETFILTER_XT_TARGET_CONNMARK
145CONFIG_NETFILTER_XT_TARGET_CONNSECMARK
146CONFIG_NETFILTER_XT_TARGET_CT
147CONFIG_NETFILTER_XT_TARGET_DSCP
148CONFIG_NETFILTER_XT_TARGET_HL
149CONFIG_NETFILTER_XT_TARGET_IDLETIMER
150CONFIG_NETFILTER_XT_TARGET_LED
151CONFIG_NETFILTER_XT_TARGET_LOG
152CONFIG_NETFILTER_XT_TARGET_MARK
153CONFIG_NETFILTER_XT_TARGET_NFLOG
154CONFIG_NETFILTER_XT_TARGET_NFQUEUE
155CONFIG_NETFILTER_XT_TARGET_NOTRACK
156CONFIG_NETFILTER_XT_TARGET_RATEEST
157CONFIG_NETFILTER_XT_TARGET_SECMARK
158CONFIG_NETFILTER_XT_TARGET_TCPMSS
159CONFIG_NETFILTER_XT_TARGET_TCPOPTSTRIP
160CONFIG_NETFILTER_XT_TARGET_TEE
161CONFIG_NETFILTER_XT_TARGET_TPROXY
162CONFIG_NETFILTER_XT_TARGET_TRACE
163CONFIG_NF_CONNTRACK_ZONES
164CONFIG_IP6_NF_FILTER
165CONFIG_IP6_NF_IPTABLES
166CONFIG_IP6_NF_MANGLE
167CONFIG_IP6_NF_MATCH_AH
168CONFIG_IP6_NF_MATCH_EUI64
169CONFIG_IP6_NF_MATCH_FRAG
170CONFIG_IP6_NF_MATCH_HL
171CONFIG_IP6_NF_MATCH_IPV6HEADER
172CONFIG_IP6_NF_MATCH_MH
173CONFIG_IP6_NF_MATCH_OPTS
174CONFIG_IP6_NF_MATCH_RPFILTER
175CONFIG_IP6_NF_MATCH_RT
176CONFIG_IP6_NF_QUEUE
177CONFIG_IP6_NF_RAW
178CONFIG_IP6_NF_SECURITY
179CONFIG_IP6_NF_TARGET_HL
180CONFIG_IP6_NF_TARGET_REJECT
181CONFIG_IP6_NF_TARGET_REJECT_SKERR
182CONFIG_DNS_RESOLVER
183CONFIG_IOSCHED_DEADLINE
184CONFIG_SUSPEND_TIME
185CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS
186CONFIG_CONSOLE_TRANSLATIONS
187CONFIG_EVM
188CONFIG_INTEGRITY_SIGNATURE
189CONFIG_FHANDLE
190CONFIG_EPOLL
191CONFIG_SIGNALFD
192CONFIG_TIMERFD
193CONFIG_TMPFS_POSIX_ACL
194"
195
196CONFIGS_OFF="
197"
198CONFIGS_EQ="
199"
200
201ered() {
202 echo -e "\033[31m" $@
203}
204
205egreen() {
206 echo -e "\033[32m" $@
207}
208
209ewhite() {
210 echo -e "\033[37m" $@
211}
212
213echo -e "\n\nChecking config file for Halium specific config options.\n\n"
214
215errors=0
216fixes=0
217
218for c in $CONFIGS_ON $CONFIGS_OFF;do
219 cnt=`grep -w -c $c $FILE`
220 if [ $cnt -gt 1 ];then
221 ered "$c appears more than once in the config file, fix this"
222 errors=$((errors+1))
223 fi
224
225 if [ $cnt -eq 0 ];then
226 if $write ; then
227 ewhite "Creating $c"
228 echo "# $c is not set" >> "$FILE"
229 fixes=$((fixes+1))
230 else
231 ered "$c is neither enabled nor disabled in the config file"
232 errors=$((errors+1))
233 fi
234 fi
235done
236
237for c in $CONFIGS_ON;do
238 if grep "$c=y\|$c=m" "$FILE" >/dev/null;then
239 egreen "$c is already set"
240 else
241 if $write ; then
242 ewhite "Setting $c"
243 sed -i "s,# $c is not set,$c=y," "$FILE"
244 fixes=$((fixes+1))
245 else
246 ered "$c is not set, set it"
247 errors=$((errors+1))
248 fi
249 fi
250done
251
252for c in $CONFIGS_EQ;do
253 lhs=$(awk -F= '{ print $1 }' <(echo $c))
254 rhs=$(awk -F= '{ print $2 }' <(echo $c))
255 if grep "^$c" "$FILE" >/dev/null;then
256 egreen "$c is already set correctly."
257 continue
258 elif grep "^$lhs" "$FILE" >/dev/null;then
259 cur=$(awk -F= '{ print $2 }' <(grep "$lhs" "$FILE"))
260 ered "$lhs is set, but to $cur not $rhs."
261 if $write ; then
262 egreen "Setting $c correctly"
263 sed -i 's,^'"$lhs"'.*,# '"$lhs"' was '"$cur"'\n'"$c"',' "$FILE"
264 fixes=$((fixes+1))
265 fi
266 else
267 if $write ; then
268 ewhite "Setting $c"
269 echo "$c" >> "$FILE"
270 fixes=$((fixes+1))
271 else
272 ered "$c is not set"
273 errors=$((errors+1))
274 fi
275 fi
276done
277
278for c in $CONFIGS_OFF;do
279 if grep "$c=y\|$c=m" "$FILE" >/dev/null;then
280 if $write ; then
281 ewhite "Unsetting $c"
282 sed -i "s,$c=.*,# $c is not set," $FILE
283 fixes=$((fixes+1))
284 else
285 ered "$c is set, unset it"
286 errors=$((errors+1))
287 fi
288 else
289 egreen "$c is already unset"
290 fi
291done
292
293if [ $errors -eq 0 ];then
294 egreen "\n\nConfig file checked, found no errors.\n\n"
295else
296 ered "\n\nConfig file checked, found $errors errors that I did not fix.\n\n"
297fi
298
299if [ $fixes -gt 0 ];then
300 egreen "Made $fixes fixes.\n\n"
301fi
302
303ewhite " "
编译内核
将处理好的config重命名为.config移动到内核源码目录
编译内核：
# 交叉编译前务必设置环境变量
export ARCH=arm64
export CROSS_COMPILE=aarch64-linux-gnu-
# 配置内核模块压缩为 none，否则 Debian/Arch 不开机
make menuconfig
make -j$(nproc)
生成 deb 包：
1export ARCH=arm64
2export CROSS_COMPILE=aarch64-linux-gnu-
3export KBUILD_DEBARCH=arm64
4export KDEB_CHANGELOG_DIST=mobile
5make -j$(nproc) deb-pkg
可选，如不生成，后续构建 rootfs 需要手动复制 vmLinuz。
生成的 deb 包在上级目录下。
构建 rootfs
可以选择使用Arch Linux ARM的官方预构建包
也可以使用 pacstrap 参考 Arch Linux 官方教程来构建root
这里使用预构建包：
1cd ~/vince
2wget http://os.archlinuxarm.org/os/ArchLinuxARM-aarch64-latest.tar.gz
处理 rootfs
释放 rootfs 并挂载需要的目录：
1mkdir rootfs
2sudo tar axf ArchLinuxARM-aarch64-latest.tar.gz -C rootfs
3
4# archlinux 需要挂载自身
5sudo mount --bind ~/vince/rootfs/ ~/vince/rootfs
配置 rootfs
使用 arch-chroot 进入 rootfs 环境：
1sudo arch-chroot rootfs su -
2ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
初始化 pacman keyring
1pacman-key --init
2pacman-key --populate archlinuxarm
卸载内核及 firmware
1pacman -R linux-aarch64 linux-firmware linux-firmware-whence
更新 rootfs：
1pacman -Syu
安装内核
打开一个新终端会话：
1cd ~/vince/linux
2
3sudo make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- INSTALL_MOD_PATH=~/vince/rootfs modules_install
4
5sudo make ARCH=arm64 INSTALL_PATH=~/vince/rootfs/boot install
如果上一步没有构建 deb 包就需要将 arch/arm64/boot 下的 Image.gz 手动复制到 ~/vince/rootfs/boot
安装 firmware
从 pmOS 或者 mobian 的 /lib/firmware 下复制所有文件到 rootfs 的 /lib/firmware
然后回到 rootfs 环境，安装 linux-firmware-qcom：
1pacman -S linux-firmware-qcom
系统及软件配置
参考ArchLinux 安装及 Snapper 和 btrfs-grub 的使用
添加 danctnix 源：
1echo '[danctnix]
2Server = https://p64.arikawa-hi.me/$repo/$arch/' >> /etc/pacman.conf
3
4wget https://p64.arikawa-hi.me/danctnix/aarch64/danctnix-keyring-2-1-any.pkg.tar.xz
5pacman -U danctnix-keyring-2-1-any.pkg.tar.xz
6
7pacman -Syu
前文未提到的必要软件：
1pacman -S networkmanager modemmanager bluez bluez-utils qrtr rmtfs git wget usbutils
2systemctl enable NetworkManager
3systemctl enable bluetooth
4systemctl enable qrtr-ns
5systemctl enable rmtfs
6systemctl enable ModemManager
如不安装桌面环境：
1pacman -Sy danctnix-usb-tethering openssh
2systemctl enable usb-tethering
3systemctl enable sshd
可连接 pc 使用RNDIS连接网络，使用 ssh [email protected] 来进行基本的网络配置(这个 ip 我真的，爬了十几分钟 Google)
生成 initrd
kerver=$(ls /usr/lib/modules)
mkinitcpio --generate /boot/initrd.img-$kerver --kernel $kerver
打包镜像
清理缓存：
1pacman -Scc
2cat /dev/null > ~/.bash_history && history -c
随后 Ctrl+D 退出 rootfs
配置文件系统
首先 dd 一个 4G 大小的 raw img，格式化为 ext4（或者你想要的文件系统）
1cd ~/vince
2dd if=/dev/zero of=rootfs.ext4 bs=1M count=4096
3sudo mkfs.ext4 rootfs.ext4
记录刚刚的 UUID 备用，等下使用 file 指令也可获取
同步文件
挂载 rootfs.ext4：
1sudo mount rootfs.ext4 -m mnt
使用 rsync 迁移 rootfs ：
1rsync -qaHAXS rootfs/ mnt
2sudo umount -R mnt
生成 simg
使用 img2simg 将 raw image 转换为sparse image
1img2simg rootfs.ext4 rootfs.img
这样就得到的最终需要的 rootfs 了
构建 boot
还需要制作一个 boot.img 来启动 rootfs
准备文件：
1mkdir mkboot
2
3cp linux/arch/arm64/boot/Image.gz linux/arch/arm64/boot/dts/qcom/msm8953-xiaomi-vince.dtb mkboot
4
5sudo cp rootfs/boot/initrd.img* mkboot/initrd.img
6
7# 按你自己的用户来
8sudo chown users:users -R mkboot
9cd mkboot
为 kernel 附加设备树：
1cat Image.gz msm8953-xiaomi-vince.dtb > kernel-dtb
生成 boot 镜像：
1mkbootimg \
2 --base 0x80000000 \
3 --kernel_offset 0x00080000 \
4 --ramdisk_offset 0x02000000 \
5 --tags_offset 0x01e00000 \
6 --pagesize 2048 \
7 --second_offset 0x00f00000 \
8 --ramdisk initrd.img \
9 --cmdline "console=tty0 root=UUID=<分区UUID> rw loglevel=3 "\
10 --kernel kernel-dtb -o boot.img
结语
以上，我们就得到了需要的 boot.img 和 rootfs.img ，刷入手机即可
我也构建了成品放到 GitHub 上：zmyeir/msm8953-archlinux
参考
- 自己DIY一个pinephone——debian与主线linux在红米2（msm8916）上的移植
- 在骁龙（835 845 855等）设备通过UEFI运行Archlinux
- Xiaomi Redmi 5 Plus (xiaomi-vince)
- msm8953-mainline