HelenOS on Raspberry Pi

Raspberry Pi 1 with a USB-TTL cable used for serial console.

Information pertaining to porting HelenOS to the ​Raspberry Pi 1 computer.

Status

Supported in HelenOS 0.6.0 and later. 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