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authorJack Rosenthal <jrosenth@chromium.org>2021-11-04 12:11:58 -0600
committerCommit Bot <commit-bot@chromium.org>2021-11-05 04:22:34 +0000
commit252457d4b21f46889eebad61d4c0a65331919cec (patch)
tree01856c4d31d710b20e85a74c8d7b5836e35c3b98 /core/cortex-m/watchdog.c
parent08f5a1e6fc2c9467230444ac9b582dcf4d9f0068 (diff)
downloadchrome-ec-stabilize-14395.B-ish.tar.gz
In the interest of making long-term branch maintenance incur as little technical debt on us as possible, we should not maintain any files on the branch we are not actually using. This has the added effect of making it extremely clear when merging CLs from the main branch when changes have the possibility to affect us. The follow-on CL adds a convenience script to actually pull updates from the main branch and generate a CL for the update. BUG=b:204206272 BRANCH=ish TEST=make BOARD=arcada_ish && make BOARD=drallion_ish Signed-off-by: Jack Rosenthal <jrosenth@chromium.org> Change-Id: I17e4694c38219b5a0823e0a3e55a28d1348f4b18 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3262038 Reviewed-by: Jett Rink <jettrink@chromium.org> Reviewed-by: Tom Hughes <tomhughes@chromium.org>
Diffstat (limited to 'core/cortex-m/watchdog.c')
-rw-r--r--core/cortex-m/watchdog.c58
1 files changed, 0 insertions, 58 deletions
diff --git a/core/cortex-m/watchdog.c b/core/cortex-m/watchdog.c
deleted file mode 100644
index c9faf54b2b..0000000000
--- a/core/cortex-m/watchdog.c
+++ /dev/null
@@ -1,58 +0,0 @@
-/* Copyright 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.
- */
-
-/* Watchdog common code */
-
-#include "common.h"
-#include "cpu.h"
-#include "panic.h"
-#include "task.h"
-#include "timer.h"
-#include "watchdog.h"
-
-/*
- * As defined by Armv7-M Reference Manual B1.5.6 "Exception Entry Behavior",
- * the structure of the saved context on the stack is:
- * r0, r1, r2, r3, r12, lr, pc, psr, ...
- */
-#define STACK_IDX_REG_LR 5
-#define STACK_IDX_REG_PC 6
-
-void __keep 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_set_reason(PANIC_SW_WATCHDOG, stack[STACK_IDX_REG_PC],
- (excep_lr & 0xf) == 1 ? 0xff : task_get_current());
-
- /*
- * This is our last breath, the last opportunity to sort out all
- * matters. Flush and invalidate D-cache if cache enabled.
- */
- if (IS_ENABLED(CONFIG_ARMV7M_CACHE))
- cpu_clean_invalidate_dcache();
-
- panic_printf("### WATCHDOG PC=%08x / LR=%08x / pSP=%08x ",
- stack[STACK_IDX_REG_PC], stack[STACK_IDX_REG_LR], 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();
-}