linux.git/arch/sh/kernel/head.S, branch master

sh: Move over the SH-5 head.S and tlb.h.

2008-01-28T04:18:44+00:00

Signed-off-by: Paul Mundt

sh: Bring SMP support back from the dead.

2007-09-21T09:32:32+00:00

There was a very preliminary bunch of SMP code scattered around for the
SH7604 microcontrollers from way back when, and it has mostly suffered
bitrot since then. With the tree already having been slowly getting
prepped for SMP, this plugs in most of the remaining platform-independent
bits.

Signed-off-by: Magnus Damm 
Signed-off-by: Paul Mundt

sh: Move entry point code to .text.head.

2007-07-20T08:40:03+00:00

Follow Al Viro's m68k change from l-k:

	i.e. tell modpost that entry point code (that has to be outside
	of .init.text for external reasons) is OK to refer to .init.*

Shuts up some section mismatch warnings from modpost.

Signed-off-by: Paul Mundt

sh: Fix .empty_zero_page alignment for PAGE_SIZE > 4096.

2006-12-11T23:53:29+00:00

Signed-off-by: Paul Mundt

sh: Fixup various PAGE_SIZE == 4096 assumptions.

2006-12-06T01:45:39+00:00

There were a number of places that made evil PAGE_SIZE == 4k
assumptions that ended up breaking when trying to play with
8k and 64k page sizes, this fixes those up.

The most significant change is the way we load THREAD_SIZE,
previously this was done via:

	mov	#(THREAD_SIZE >> 8), reg
	shll8	reg

to avoid a memory access and allow the immediate load. With
a 64k PAGE_SIZE, we're out of range for the immediate load
size without resorting to special instructions available in
later ISAs (movi20s and so on). The "workaround" for this is
to bump up the shift to 10 and insert a shll2, which gives a
bit more flexibility while still being much cheaper than a
memory access.

Signed-off-by: Paul Mundt

sh: Exception vector rework and SH-2/SH-2A support.

2006-12-06T01:45:36+00:00

This splits out common bits from the existing exception handler for
use between SH-2/SH-2A and SH-3/4, and adds support for the SH-2/2A
exceptions.

Signed-off-by: Yoshinori Sato 
Signed-off-by: Paul Mundt

sh: Add support for 4K stacks.

2006-09-27T09:22:14+00:00

This enables support for 4K stacks on SH.

Currently this depends on DEBUG_KERNEL, but likely all boards
will switch to this as the default in the future.

Signed-off-by: Paul Mundt

sh: stack debugging support.

2006-09-27T09:20:16+00:00

This adds a DEBUG_STACK_USAGE and DEBUG_STACKOVERFLOW for SH.

Signed-off-by: Paul Mundt

sh: BSS init bugfix and barrier in entry point.

2006-09-27T06:00:04+00:00

A synco is needed before we jump to start_kernel().

While we're at it, also move the sh_cpu_init() jump until after
we've zeroed BSS, as this has caused some undesirable results
in sh_cpu_init().

Signed-off-by: Paul Mundt

sh: Kill off the .stack section.

2006-09-27T02:40:05+00:00

We had a special .stack section in the ld script that
was being used to position r15 initially. This is
nonsensical, as we can just use a THREAD_SIZE offset
from the init_thread_union instead (as every other arch
does).

Signed-off-by: Paul Mundt