Commit Graph

7 Commits

Author SHA1 Message Date
Magnus Damm
eb9b9b56ee sh: boot word / mode pin support V2
Add mode pin support for the SuperH architecture V2.

With this patch applied the board code can add their
own function to export the cpu mode pin configuration.
In most cases this will be a constant bitmap, but
boards that allow reading this from a register can
instead read out the pin state from hardware.

The code warns if a pin is tested but no board specific
mode pin function has been provided.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-06-01 15:44:49 +09:00
Paul Mundt
14866543ad sh: More I/O routine overhauling.
This tidies up a lot of the PIO/MMIO split. No in-tree platforms were
making use of the MMIO overloading through the machvec (nor have any of
them been in some time), so we just kill all of that off. The ISA I/O
routine wrapping remains unaffected, which remains the only special
casing outside of the iomap API that boards need to think about.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-10-04 05:25:52 +09:00
Paul Mundt
fa43972fab sh: fixup many sparse errors.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-09-08 10:35:04 +09:00
Paul Mundt
5556410e22 sh: panic on machvec section misalignment.
Now that __initmv references the machvec section unconditionally
there have been cases where folks have been mistakenly flagging
non-machvec structures with the machvec section attribute (presumably
to shut up modpost). This leads to obscure breakage in earlyprintk
amongst other places and is rather non-obvious.

Add a simple sanity check to try and catch __initmv misuse and
panic early.

Reported-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-08-07 19:13:23 +09:00
Paul Mundt
fd8f20e8e2 sh: Rip out special unknown machvec.
This kills off the BareCPU board as a "special" machvec, rather,
we leave this as a default for when no other vector is available,
or when we want to use it in combination with other vectors for
testing with generic ops. As sh_mv is copied out anyways (or
overloaded when an alternate vector is explicitly selected), this
doesn't consume any additional memory.

The generic machvec can be forcibly selected with sh_mv=generic,
or by not having any other boards enabled.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08 02:43:40 +00:00
Paul Mundt
82f81f4784 sh: Kill off machvec aliases.
We now throw all of the machvecs in to .machvec.init and either
select one on the command line, or copy out the first (and
usually only) one to sh_mv. The rest are freed as usual.

This gets rid of all of the silly sh_mv aliasing and makes the
selection explicit rather than link-order dependent.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08 02:43:39 +00:00
Paul Mundt
9655ad03af sh: Fixup machvec support.
This fixes up much of the machvec handling, allowing for it to be
overloaded on boot. Making practical use of this still requires
some Kconfig munging, however.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-06-08 02:43:37 +00:00