diff options
| author | Vic Yang <victoryang@chromium.org> | 2012-02-11 23:00:42 +0800 |
|---|---|---|
| committer | Vic Yang <victoryang@chromium.org> | 2012-02-16 05:42:08 +0800 |
| commit | 502613771e5239e5494f9f06ffecc6f61c711f1c (patch) | |
| tree | 2ca74f36b00eb04534c149df17bd927e0cedefd8 /include | |
| parent | c160dae1d45ea1a02e17b5de75e75a396b160627 (diff) | |
| download | chrome-ec-502613771e5239e5494f9f06ffecc6f61c711f1c.tar.gz | |
FPU control
Implement enable_fpu() and disable_fpu().
enable_fpu() disables interrupt and then enables FPU.
disable_fpu() disables FPU and enables interrupt.
Also added a CONFIG_FPU flag.
BUG=chrome-os-partner:7920
TEST=none
Change-Id: I2d71f396d9c7d7ac4a6a2d525f3d86f8aae87521
Signed-off-by: Vic Yang <victoryang@chromium.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/fpu.h | 17 | ||||
| -rw-r--r-- | include/task.h | 7 |
2 files changed, 24 insertions, 0 deletions
diff --git a/include/fpu.h b/include/fpu.h new file mode 100644 index 0000000000..1e398c7a67 --- /dev/null +++ b/include/fpu.h @@ -0,0 +1,17 @@ +/* Copyright (c) 2012 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +/* FPU module for Chrome EC operating system */ + +#ifndef __EC_FPU_H +#define __EC_FPU_H + +/* Enables FPU. Note that this function also disables interrupt. */ +void enable_fpu(void); + +/* Disables FPU. This function also enables interrupt. */ +void disable_fpu(void); + +#endif /* __EC_FPU_H */ diff --git a/include/task.h b/include/task.h index 17a83def98..83c1d73555 100644 --- a/include/task.h +++ b/include/task.h @@ -11,6 +11,13 @@ #include "common.h" #include "task_id.h" +/* Disables CPU interrupt bit. This might break the system so think really hard + * before using these. There are usually better ways of accomplishing this. */ +void interrupt_disable(void); + +/* Enables CPU interrupt */ +void interrupt_enable(void); + /** * Return true if we are in interrupt context */ |