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| author | Shawn Nematbakhsh <shawnn@chromium.org> | 2015-02-13 15:29:33 -0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-02-18 04:53:51 +0000 |
| commit | d00847782480e492401ba3bc5a8a8e6f026b08ba (patch) | |
| tree | 01c42b77ba518cf57e7512affcb833f0df61056f /include/software_panic.h | |
| parent | 9cb03971f6852fa03df3290e44a8451e01774755 (diff) | |
| download | chrome-ec-d00847782480e492401ba3bc5a8a8e6f026b08ba.tar.gz | |
cortex-m*: Save panicinfo on non-exception panics
Make non-exception "software" panics such as stack overflow and assert
failure save a panic log. Log the panic type in r4, and misc. panic data
in r5 so that panic reasons can be distinguished.
BUG=chrome-os-partner:36744
TEST=Manual on samus_pd. Run 'crash divzero' then 'panicinfo' after
reboot. Verify that panic info is printed with "r4 :dead6660". Trigger
stack overflow, verify that panic info is printed with "r4 :dead6661".
BRANCH=Samus
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Change-Id: I5f7a8eb0a5c2ac5799d29bb241deb24fabf38f68
Reviewed-on: https://chromium-review.googlesource.com/249912
Tested-by: Alec Berg <alecaberg@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Diffstat (limited to 'include/software_panic.h')
| -rw-r--r-- | include/software_panic.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/software_panic.h b/include/software_panic.h new file mode 100644 index 0000000000..9dc6d5a394 --- /dev/null +++ b/include/software_panic.h @@ -0,0 +1,23 @@ +/* Copyright (c) 2015 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. + * + * Software panic constants. This file must be parsable by the assembler. + */ + +#ifndef __CROS_EC_SOFTWARE_PANIC_H +#define __CROS_EC_SOFTWARE_PANIC_H + +/* Holds software panic reason PANIC_SW_* */ +#define SOFTWARE_PANIC_REASON_REG r4 +#define SOFTWARE_PANIC_INFO_REG r5 + +#define PANIC_SW_BASE 0xDEAD6660 + +/* Software panic reasons */ +#define PANIC_SW_DIV_ZERO (PANIC_SW_BASE + 0) +#define PANIC_SW_STACK_OVERFLOW (PANIC_SW_BASE + 1) +#define PANIC_SW_ASSERT (PANIC_SW_BASE + 3) +#define PANIC_SW_WATCHDOG (PANIC_SW_BASE + 4) + +#endif /* __CROS_EC_SOFTWARE_PANIC_H */ |