Commit Graph

3 Commits

Author SHA1 Message Date
scw
5cc4fe3194 Slight tweak to how the sm(4) driver attaches to superio. Also, just
use the regular bus tag for sm(4) instead of superio's "special" ISA
bus tag.
2002-08-30 10:57:05 +00:00
scw
9bcd736b9d Attach sm(4) at superio, instead of the previous isa bus attachment.
The latter's probe doesn't pick up the ethernet controller, and the
attach function needs to set MIIF_NOISOLATE.
We attach it at superio mainly because they share the same region of
address space, and the ethernet controller's interrupt is routed
through the superio.
2002-08-26 11:04:44 +00:00
scw
59474a8c82 NetBSD, meet the SH-5 cpu.
SH-5, meet NetBSD.

Let's hope this is the start of a long and fruitful relationship. :-)

This code, funded by Wasabi Systems, adds initial support for the
Hitachi SuperH(tm) SH-5 cpu architecture to NetBSD.

At the present time, NetBSD/evbsh5 only runs on a SH-5 core simulator
which has no simulated devices other than a simple console. However, it
is good enough to get to the "root device: " prompt.

Device driver support for Real SH-5 Hardware is in place, particularly for
supporting the up-coming Cayman evaluation board, and should be quite
easy to get running when the hardware is available.

There is no in-tree toolchain for this port at this time. Gcc-current has
rudimentary SH-5 support but it is known to be buggy. A working toolchain
was obtained from SuperH to facilitate this port. Gcc-current will be
fixed in due course.

The SH-5 architecture is fully 64-bit capable, although NetBSD/evbsh5 has
currently only been tested in 32-bit mode. It is bi-endian, via a boot-
time option and it also has an "SHcompact" mode in which it will execute
SH-[34] user-land instructions.

For more information on the SH-5, see www.superh.com. Suffice to say it
is *not* just another respin of the SH-[34].
2002-07-05 13:31:28 +00:00