Debian SuperH (SH4) port
SuperH (SH) is a RISC Architecture created by Renesas Electronics. SuperH is used in embedded systems such as cellular phones, NAS, LCD TVs etc. The Open Processor Foundation are reviving SuperH as an open source architecture.
Renesas SH has many types of CPU (SH/SH2/SH3/SH4 and bi-endian).
The Debian SH (SH4) port project is active for supporting SH4 (m4 and m4a).
The SH3 CPU type can be supported as well, but sh3 is no longer developed and work is shifting to SH4.（Renesas does still sell SH3.）
Similarly, it is difficult to build the environment where buildd works for SH3.
Therefore, development is focused on SH4.
The J-Core Project plans to support the SH4 instruction set in their J4 processor in 2017. (SH2 was supported by J2 circa 2015, more patents expire in 2016...)
SH4 buildd status
SH4 machines supported
Alpha Project SuperH boards(Japanese only)
USL-5P (Japanese only)
- SH7751R / 64MB SDRAM / 10/100BASE Ethernet port x1 / USB2.0 x 5
L-BOX (Japanese only)
SH7751R / 64MB SDRAM / PCMCIA (CardBus) / 10/100BASE Ethernet port x2
AP-3300 (Japanese only)
- SH7723 / 128MB SDRAM / Ethernet port x1 / USB2.0 x 1 / TFT Touch panel
NextVOD (Chinese only)
The elinux.org website lists additional SuperH machines (anything sh4 is compatible) - http://elinux.org/Processors#SuperH
deb http://ftp.ports.debian.org/debian-ports/ sid main deb http://ftp.ports.debian.org/debian-ports/ unreleased main deb-src http://ftp.ports.debian.org/debian-ports/ sid main
Cross compilers can now be installed directly from the main Debian repositories thanks to the efforts of Matthias Klose (doko):
# apt-get install gcc-sh4-linux-gnu g++-sh4-linux-gnu
There are currently no porter boxes available. However, you can set up your own sh4 sbuild chroot with SH4/sbuildQEMU
If you are interested in SuperH and the sh4 port, please contact the debian-superh mailing list.
SH4/sbuildQEMU - Setting up an sbuild environment with qemu to build packages for sh4