diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2014-03-01 10:20:47 -0800 |
|---|---|---|
| committer | chrome-internal-fetch <chrome-internal-fetch@google.com> | 2014-03-11 05:52:41 +0000 |
| commit | 0f73a129b42acfcad843203b602fbbcc8894c614 (patch) | |
| tree | 9531fae7a8d9c3290973fe5b5ee47e57cd485546 /core/cortex-m0/watchdog.c | |
| parent | 7aab81edce830e15134b52256ad3186e08951b10 (diff) | |
| download | chrome-ec-0f73a129b42acfcad843203b602fbbcc8894c614.tar.gz | |
Add Cortex-M0 core support
The Cortex-M0 core is based on ARMv6-M instruction set rather than
ARMv7-M as Cortex-M3 and M4.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BRANCH=none
BUG=none
TEST=run console on STM32F072,
and pass all available unit-tests on target.
Change-Id: I9bdf6637132ba4a3e739d388580a72b4c84e930e
Reviewed-on: https://chromium-review.googlesource.com/188982
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'core/cortex-m0/watchdog.c')
| -rw-r--r-- | core/cortex-m0/watchdog.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/core/cortex-m0/watchdog.c b/core/cortex-m0/watchdog.c new file mode 100644 index 0000000000..53172dd2a6 --- /dev/null +++ b/core/cortex-m0/watchdog.c @@ -0,0 +1,40 @@ +/* Copyright (c) 2014 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. + */ + +/* Watchdog common code */ + +#include "common.h" +#include "panic.h" +#include "task.h" +#include "timer.h" +#include "uart.h" +#include "watchdog.h" + +void watchdog_trace(uint32_t excep_lr, uint32_t excep_sp) +{ + uint32_t psp; + uint32_t *stack; + + asm("mrs %0, psp" : "=r"(psp)); + if ((excep_lr & 0xf) == 1) { + /* we were already in exception context */ + stack = (uint32_t *)excep_sp; + } else { + /* we were in task context */ + stack = (uint32_t *)psp; + } + + panic_printf("### WATCHDOG PC=%08x / LR=%08x / pSP=%08x ", + stack[6], stack[5], psp); + if ((excep_lr & 0xf) == 1) + panic_puts("(exc) ###\n"); + else + panic_printf("(task %d) ###\n", task_get_current()); + + /* If we are blocked in a high priority IT handler, the following debug + * messages might not appear but they are useless in that situation. */ + timer_print_info(); + task_print_list(); +} |