PSVita Linux build instructions

PSVita_Linux_build_instructions.md

0) Optional: Solder UART0 pins

1. Check here for the pinout. You will also need a 1.8V level shifter.

1) Install an ARMv7 cross-compiler

1. Go to https://toolchains.bootlin.com
2. Select arch: armv7-eabihf
3. Select libc: glibc
4. Download bleeding-edge
5. Uncompress it (for example to /opt)
6. Add the bin/directory of the toolchain to $PATH
   • In my case: export PATH=$PATH:/opt/armv7-eabihf--glibc--bleeding-edge-2023.08-1/bin

2) Build Buildroot

1. git clone git://git.buildroot.net/buildroot && cd buildroot
2. Download and copy this Buildroot .config to .config
3. If using a toolchain path different than /opt/armv7-eabihf--glibc--bleeding-edge-2023.08-1:
   • make menuconfig
   • Navigate to Toolchain --->
   • Properly set the Toolchain path, save and exit
4. Create a rootfs-overlay directory. Everything you put inside will be part of the rootfs.
5. make -j
6. This will generate output/images/rootfs.cpio.xz

3) Build Linux

1. git clone https://github.com/xerpi/linux_vita.git
2. cd linux_vita && cp ../buildroot/output/images/rootfs.cpio.xz ./
3. make ARCH=arm vita_defconfig
4. make ARCH=arm CROSS_COMPILE=arm-linux- -j
5. make ARCH=arm CROSS_COMPILE=arm-linux- vita1000.dtb vita2000.dtb pstv.dtb
6. This will generate arch/arm/boot/zImage and arch/arm/boot/dts/{vita1000.dtb,vita2000.dtb,pstv.dtb}

4) Install vitasdk

5) Build vita-baremetal-loader

1. git clone https://github.com/xerpi/vita-baremetal-loader.git
2. cd vita-baremetal-loader && make
3. This will generate baremetal-loader.skprx

6) Install libbaremetal

1. git clone https://github.com/xerpi/vita-libbaremetal.git
2. cd vita-libbaremetal/libbaremetal && make install

7) Build vita-baremetal-linux-loader

1. git clone https://github.com/xerpi/vita-baremetal-linux-loader.git
2. cd vita-baremetal-linux-loader && make
3. This will generate vita-baremetal-linux-loader.bin

8) Build and install the Plugin Loader VPK or vitacompanion

Two main methods: (a) a VPK that loads a kernel plugin, or (b) my fork of vitacompanion that has an custom command to load skprxes.

a. Plugin Loader VPK method:

1. git clone https://bitbucket.org/xerpi/vita_plugin_loader.git
2. cd vita_plugin_loader && mkdir build && cd build && cmake .. && make
3. Install plugin_loader.vpk

b. vitacompanion method:

1. Build and install vitacompanion
2. To launch an skprx run:
   echo "load_skprx ux0:/myplugin.skprx" | nc $PSVITAIP 1338

9) Boot Linux

1. Copy baremetal-loader.skprx to ux0:data/tai/kplugin.skprx
   • Configurable in vita_plugin_loader/main.c:13
2. Copy vita-baremetal-linux-loader.bin to ux0:/baremetal/payload.bin
   • Configurable in vita-baremetal-loader/config.h
3. Copy linux_vita/arch/arm/boot/zImage to ux0:/linux/zImage (uma0 if using sd2vita)
4. Copy linux_vita/arch/arm/boot/dts/{vita1000.dtb,vita2000.dtb,pstv.dtb} to ux0:/linux/ (uma0 if using sd2vita)
5. Launch the Plugin Loader VPK

More information

• Check https://github.com/xerpi/vita-linux-loader/blob/master/README.md
• Linux Driver status can be found here: https://wiki.henkaku.xyz/vita/Linux_Driver_Status

Deprecated steps

4) Build vita-linux-loader (DEPRECATED: use vita-baremetal-linux-loader instead)

1. Install vitasdk
2. git clone git@github.com:xerpi/vita-linux-loader.git
3. cd vita-linux-loader && make
4. This will generate linuxloader.skprx

I have rebased the Vita port to the latest upstream Linux commit (6.6.0-rc3): https://github.com/xerpi/linux_vita/tree/rebase-6.6.0-rc3
When booting, sometimes it hangs at:

Uncompressing Linux... done, booting the kernel.

And sometimes it gets a bit further:

Uncompressing Linux... done, booting the kernel.
Booting Linux on physical CPU 0x0
Linux version 6.6.0-rc3-00045-g87e131f82459 (xerpi@xps15-linux) (arm-linux-gcc.br_real (Buildroot 2021.11-8547-g7e65a1a) 13.2.0, GNU ld (GNU Binutils) 2.41) #3 SMP Thu Sep 28 00:29:59 CEST 2023
CPU: ARMv7 Processor [412fc09a] revision 10 (ARMv7), cr=10c5787d
CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing instruction cache
OF: fdt: Machine model: PlayStation Vita
OF: fdt: Ignoring memory range 0x40200000 - 0x41000000
printk: bootconsole [earlycon0] enabled
Memory policy: Data cache writealloc
BUG: not creating mapping for 0x00000000 at 0x7f000000 in user region

I suspect it's a problem related to the linux loader leaving stale data in the L2 data cache.

There is a missing folder in buildroot (Chapter 2) : It's rootfs-overlay
make doesn't seems to make it. Creating it manually allows to get rid of the error I encountered with rsync.

I suggest adding the creation of this folder into the guide or find a fix. Maybe the configuration file is incorrect ?

The error :

>>>   Copying overlay rootfs-overlay
rsync: [sender] change_dir "/home/gglinnk/buildroot/rootfs-overlay" failed: No such file or directory (2)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1338) [sender=3.2.7]
make[1]: *** [Makefile:749: target-finalize] Error 23
make: *** [Makefile:82: _all] Error 2

There is a missing folder in buildroot (Chapter 2) : It's rootfs-overlay make doesn't seems to make it. Creating it manually allows to get rid of the error I encountered with rsync.

I suggest adding the creation of this folder into the guide or find a fix. Maybe the configuration file is incorrect ?

The error :

>>>   Copying overlay rootfs-overlay
rsync: [sender] change_dir "/home/gglinnk/buildroot/rootfs-overlay" failed: No such file or directory (2)
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1338) [sender=3.2.7]
make[1]: *** [Makefile:749: target-finalize] Error 23
make: *** [Makefile:82: _all] Error 2

Thanks for pointing that out. I have updated the instructions.

It took me far too long to realize that there is an entire comment thread under the guide.
Anyways what does it mean I boot up plugin loader, it shows this for a split second

Plugin Loader by xerpi
Module loaded with ID: 0x4002006D
Press Start to continue.

then reboots to a blank screen?

Using a slim on 3.65, and I made sure to use the 363 skprx file.

It took me far too long to realize that there is an entire comment thread under the guide. Anyways what does it mean I boot up plugin loader, it shows this for a split second

@Cinder4198
It's funny, but I got here completely by accident. Looks like my experiments from a year ago will help you out. The comments from here confused me for a long time, until I got into the source code of the Xerpi toolkit and made it more intuitive.

I made a fork of my experiments where I also updated the README.md, it seems to be clearer. I have it running on 3.65, I've tried to cover all the subtleties I've seen, especially for the different PS Vita firmware.

I'll also give a link to my merge attempt with the newer kernel. Of course, I failed miserably, especially since I can't get debugging.
I have also placed the finished files in the plugin and loader repositories.

My failed kernel - https://github.com/DvaMishkiLapa/linux_vita
Original Xerpi kernel image - https://github.com/xerpi/linux_vita/releases/tag/5.9.0-rc5
Loader modification - https://github.com/DvaMishkiLapa/vita_plugin_linux_loader
Plugins - https://github.com/DvaMishkiLapa/vita-baremetal-loader

@xerpi
Probably should have shown you this, there might be something useful in there. You seem to be doing about the same thing in vita-baremetal-loader as I am. I'd be glad if this helps you in any way or improves the important repository ^^.

I am getting Error cant read zImage on 3.65. idk what i am doing wrong

One question: could I use the terminal or install a graphical interface?

Hello

Help me for plugin_loader.vpk released (compile)

Can anyone share the link?

Mediafire maybe

Thank you