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linux/arch/sh/boards/mach-hp6xx/pm_wakeup.S

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sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
/*
* Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
*/
#include <linux/linkage.h>
sh: migrate to arch/sh/include/ This follows the sparc changes a439fe51a1f8eb087c22dd24d69cebae4a3addac. Most of the moving about was done with Sam's directions at: http://marc.info/?l=linux-sh&m=121724823706062&w=2 with subsequent hacking and fixups entirely my fault. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2008-07-29 07:09:44 +08:00
#include <cpu/mmu_context.h>
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
/*
* Kernel mode register usage:
* k0 scratch
* k1 scratch
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
* For more details, please have a look at entry.S
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
*/
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
#define k0 r0
#define k1 r1
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
ENTRY(wakeup_start)
! clear STBY bit
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
mov #-126, k1
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
and #127, k0
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
mov.b k0, @k1
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
! enable refresh
mov.l 5f, k1
mov.w 6f, k0
mov.w k0, @k1
! jump to handler
mov.l 4f, k1
jmp @k1
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
nop
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
.align 2
sh: shared register saving code for sh3/sh4/sh4a This patch reworks the sh3/sh4/sh4a register saving code in the following ways: - break out prepare_stack_save_dsp() from handle_exception() - break out save_regs() from handle_exception() - the register saving order is unchanged - align new functions to fit in cache lines - separate exception code from interrupt code - keep main code flow in a single cache line per exception vector - use bsr/rts for regular functions (save pr first) - keep data in one shared cache line (exception_data) - document the functions - tie in the hp6xx code Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-02-23 15:14:02 +08:00
4: .long handle_interrupt
sh: APM/PM support. This adds some simple PM stubs and the basic APM interfaces, primarily for use by hp6xx, where the existing userland expects it. Signed-off-by: Andriy Skulysh <askulysh@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2006-09-27 15:20:22 +08:00
5: .long 0xffffff68
6: .word 0x0524
ENTRY(wakeup_end)
nop