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howtos:hardware:arm:raspberrypi2 [2017/12/26 19:47 (UTC)] – updated notes for SARPi URL exagahowtos:hardware:arm:raspberrypi2 [2024/04/09 16:51 (UTC)] (current) – mozes
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 ^ Site ^ Slackware versions ^ Using official Slackware packages ^ Installation methods ^ Notes ^ ^ Site ^ Slackware versions ^ Using official Slackware packages ^ Installation methods ^ Notes ^
-| [[http://sarpi.co.uk/|SARPi Project]] | 14.2, -current | Yes | Slackware installer | An end-to-end HOW TO tutorial taking you through the installation and setup process. |+| [[https://sarpi.penthux.net/|SARPi Project]] | 14.2 | Yes | Slackware installer | An end-to-end HOW TO tutorial taking you through the installation and setup process. |
  
-As long you use recent raspbian image the [[howtos:hardware:arm:raspberrypi|Raspberry Pi 1 manual install method]] also works for the Pi 2.+==== Manual install method without a Raspbian image ====
  
 +As long you use the most recent release of firmware [i.e. post-June 2019] and the latest Raspbian Buster image the [[howtos:hardware:arm:raspberrypi|Raspberry Pi 1 manual install method]] also works for the Pi 2.
 +
 +This method is for installing Slackware ARM 14.2 on a Raspberry Pi 2 model B without a Raspbian image.
 +However, it should work for other Slackware ARM and Raspberry Pi versions.
 +
 +=== 1. Partition and format the SD Card ===
 +
 +<code>
 +$ sudo fdisk -l /dev/mmcblk0
 +
 +Disk /dev/mmcblk0: 31.9 GB, 31914983424 bytes
 +4 heads, 16 sectors/track, 973968 cylinders, total 62333952 sectors
 +Units = sectors of 1 * 512 = 512 bytes
 +Sector size (logical/physical): 512 bytes / 512 bytes
 +I/O size (minimum/optimal): 512 bytes / 512 bytes
 +Disk identifier: 0x00000000
 +
 +        Device Boot      Start         End      Blocks   Id  System
 +/dev/mmcblk0p1            2048       67583       32768    b  W95 FAT32
 +/dev/mmcblk0p2           67584    62333951    31133184   83  Linux
 +$ sudo mkfs.vfat /dev/mmcblk0p1
 +$ sudo mkfs.ext4 /dev/mmcblk0p2
 +</code>
 +
 +Remarks:
 +  * I use a 32GB SD Card
 +  * I choose 32MB for the size of the first partition
 +  * I let the empty space left for the second partition
 +
 +=== 2. Put the Raspberry Pi firmware in the SD Card ===
 +
 +<code>
 +$ git clone https://github.com/raspberrypi/firmware.git
 +$ sudo mount /dev/mmcblk0p1 ~/mnt
 +$ sudo cp -r firmware/boot/* ~/mnt
 +$ sudo umount ~/mnt
 +$ sudo mount /dev/mmcblk0p2 ~/mnt
 +$ sudo mkdir -p ~/mnt/lib/modules
 +$ sudo cp -r firmware/modules/* ~/mnt/lib/modules
 +$ sudo umount ~/mnt
 +</code>
 +
 +=== 3. Put the Slackware ARM mini root file system in the SD Card ===
 +
 +<code>
 +$ wget -c ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-devtools/minirootfs/roots/slack-14.2-miniroot_01Jul16.tar.xz
 +$ sudo mount /dev/mmcblk0p2 ~/mnt
 +$ sudo tar -C ~/mnt -xf slack-14.2-miniroot_01Jul16.tar.xz
 +$ echo "/dev/mmcblk0p1 /boot vfat defaults 0 0" | sudo tee ~/mnt/etc/fstab
 +$ echo "/dev/mmcblk0p2 /     ext4 defaults 0 0" | sudo tee -a ~/mnt/etc/fstab
 +$ echo "proc           /proc proc defaults 0 0" | sudo tee -a ~/mnt/etc/fstab
 +$ PASSWD=$(openssl passwd -1 -salt cetkq/enZx6/c2 password)
 +$ sudo sed -i "s|\(root:\).*\(:16983:0:::::\)|\1${PASSWD}\2|" ~/mnt/etc/shadow
 +$ sudo sed -i 's|USE_DHCP\[1\]=""|USE_DHCP\[1\]="yes"|' ~/mnt/etc/rc.d/rc.inet1.conf
 +$ echo "PermitRootLogin yes" | sudo tee -a ~/mnt/etc/ssh/sshd_config
 +$ sudo umount ~/mnt
 +</code>
 +
 +Remarks:
 +  * I set "password" as password for the "root" user
 +  * I set DHCP on the "eth1" network interface
 +  * I allow the "root" user to connect through SSH
 +
 +=== 4. Insert the SD Card in the Raspberry Pi ===
 +
 +Your SD Card is ready so you can insert it in the Raspberry Pi and boot.
 +
 +You can connect remotely to your Raspberry Pi as "root" through SSH.
 +<code>
 +$ ssh root@raspberrypi
 +</code>
 +
 +As soon as you are logged, you might want to install additional Slackware ARM packages:
 +<code>
 +$ wget --mirror ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-14.2
 +$ upgradepkg --install-new ftp.arm.slackware.com/slackwarearm/slackwarearm-14.2/slackware/*/*.txz
 +$ removepkg ftp.arm.slackware.com/slackwarearm/slackwarearm-14.2/slackware/*/kernel_*.txz
 +</code>
 +
 +Remarks:
 +  * I consider that the Raspberry Pi hostname is "raspberrypi"
 +  * I recommend to add a normal user and use this user instead of "root"
 +  * I recommend to change the "root" user password
 +  * I recommend to disallow the "root" user to connect through SSH
 +  * I recommend to [[https://www.raspberrypi.org/documentation/linux/kernel/building.md|build your own Linux kernel]] packages because the kernel you are running does not match with the installed Slackware ARM packages
 +
 +=== 5. Tips and tricks ===
 +
 +== 5.1. Processor ==
 +
 +The Raspberry Pi processor can reach 1.2GHz.
 +However, by default, it is stuck to 600MHz even if it is used at 100%.
 +You can check the current frequency of the processor by typing:
 +<code>$ cpufreq-info</code>
 +
 +In order to reach 1.2GHz when the processor is used at 100% (i.e., use the frequency scaling), you need to change the default governors.
 +Add the following line to the end of the ''/etc/rc.d/rc.local'' file:
 +<code>echo ondemand | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor</code>
 +Now, the processor is correctly set.
 +
 +== 5.2. Time ==
 +
 +Unfortunately, the Raspberry Pi does not provide a Real-Time Clock (RTC).
 +That is why there is no battery included with the board.
 +It means that each time you shutdown the Raspberry Pi, the time is reset!
 +However, if you have internet access, you can update the time during the Slackware ARM boot.
 +Add the following line to the end of the ''/etc/rc.d/rc.local'' file:
 +<code>ntpdate pool.ntp.org</code>
 +Now, the time is correctly set.
 +
 +== 5.3. Video ==
 +
 +Unfortunately, the Raspberry Pi is not compatible with OpenGL (it is compatible OpenGL ES that is a subset of OpenGL).
 +It means that, by default, each application requiring OpenGL will be slow.
 +However, you can reach 60 FPS with OpenGL applications on the Raspberry Pi by using the correct driver.
 +
 +Firstly, you need to build Mesa (>= 17.0.4) with the VC4 DRI driver:
 +<code>
 +$ CFLAGS="-O2 -march=armv8-a -mtune=cortex-a53 -mfloat-abi=softfp -mfpu=neon-vfpv4" \
 + CXXFLAGS="-O2 -march=armv8-a -mtune=cortex-a53 -mfloat-abi=softfp -mfpu=neon-vfpv4" \
 + ./configure \
 + --prefix=/usr \
 + --sysconfdir=/etc \
 + --with-dri-driverdir=/usr/lib/xorg/modules/dri \
 + --with-egl-platforms=x11,drm \
 + --with-gallium-drivers=vc4
 +$ make -j4
 +$ make install DESTDIR=/where/you/want/to/install
 +</code>
 +Then build your own Slackware ARM Mesa package and install it.
 +
 +Secondly, add the following line to the end of the ''/boot/config.txt'' file:
 +<code>dtoverlay=vc4-fkms-v3d</code>
 +Then reboot the Raspberry Pi.
 +
 +You can check that you are able to get 60 FPS with OpenGL applications on the Raspberry Pi by typing the following command in an X terminal:
 +<code>$ glxgears</code>
 +
 +Now, the video is correctly set.
 ===== Sources ===== ===== Sources =====
  
   * Originally written by [[wiki:user:exaga|Exaga]]   * Originally written by [[wiki:user:exaga|Exaga]]
 +  * Contributions by [[wiki:user:yugiohjcj|yugiohjcj]]
  
  

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