= HelenOS on Raspberry Pi =
{{{#!imagebox align=right, width=200px
[[Image(rpi-usb-ttl-cable.jpg,center,180px, margin-left=10, margin-bottom=30, title="Raspberry Pi 1 with a USB-TTL cable used for serial console")]]
Raspberry Pi 1 with a USB-TTL cable used for serial console.
}}}


Information pertaining to porting HelenOS to the [https://www.raspberrypi.org/ Raspberry Pi] single-board computers.

== Status ==

Supported models:

  * Raspberry Pi 1 (model B)

Raspberry Pi 1 has been supported since HelenOS 0.6.0. The system boots to the kernel console. Use the USB-TTL cable and the pinout depicted on the picture to get the console going. For full user experience, a userspace serial driver is needed, in addition to a mechanism for passing boot arguments to HelenOS.

== Booting ==

Build HelenOS for Raspberry Pi, insert the microSD card you use to boot Raspberry Pi to your computer and copy `boot/image.bin` to `kernel.bin` on its boot partition:

{{{
$ make distclean; make -j 6 PROFILE=arm32/raspberrypi
$ mount
<snip>
/dev/mmcblk0p2 on /run/media/foo/af599925-1134-4b6e-8883-fb6a99cd58f1 type ext4 (rw,nosuid,nodev,relatime,seclabel,data=ordered,uhelper=udisks2)
/dev/mmcblk0p1 on /run/media/foo/boot type vfat (rw,nosuid,nodev,relatime,uid=1000,gid=1000,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,showexec,utf8,flush,errors=remount-ro,uhelper=udisks2)
$ sudo cp boot/image.bin /run/media/foo/boot/kernel.img
}}}