diff options
| author | Andriy Skulysh <askulysh@gmail.com> | 2006-09-27 16:20:22 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-09-27 16:20:22 +0900 |
| commit | 3aa770e7972723f479122cf66b529017d2175289 (patch) | |
| tree | f70d870381cec8034693704e346c53b311db688f /arch/sh/boards/hp6xx/pm_wakeup.S | |
| parent | ef48e8e3498605351f91f195cc9af0ef981b0dde (diff) | |
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>
Diffstat (limited to 'arch/sh/boards/hp6xx/pm_wakeup.S')
| -rw-r--r-- | arch/sh/boards/hp6xx/pm_wakeup.S | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/arch/sh/boards/hp6xx/pm_wakeup.S b/arch/sh/boards/hp6xx/pm_wakeup.S new file mode 100644 index 00000000000..45e9bf0b911 --- /dev/null +++ b/arch/sh/boards/hp6xx/pm_wakeup.S @@ -0,0 +1,58 @@ +/* + * 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> +#include <asm/cpu/mmu_context.h> + +#define k0 r0 +#define k1 r1 +#define k2 r2 +#define k3 r3 +#define k4 r4 + +/* + * Kernel mode register usage: + * k0 scratch + * k1 scratch + * k2 scratch (Exception code) + * k3 scratch (Return address) + * k4 scratch + * k5 reserved + * k6 Global Interrupt Mask (0--15 << 4) + * k7 CURRENT_THREAD_INFO (pointer to current thread info) + */ + +ENTRY(wakeup_start) +! clear STBY bit + mov #-126, k2 + and #127, k0 + mov.b k0, @k2 +! enable refresh + mov.l 5f, k1 + mov.w 6f, k0 + mov.w k0, @k1 +! jump to handler + mov.l 2f, k2 + mov.l 3f, k3 + mov.l @k2, k2 + + mov.l 4f, k1 + jmp @k1 + nop + + .align 2 +1: .long EXPEVT +2: .long INTEVT +3: .long ret_from_irq +4: .long handle_exception +5: .long 0xffffff68 +6: .word 0x0524 + +ENTRY(wakeup_end) + nop |