1 files changed, 0 insertions, 135 deletions
diff --git a/chip/it83xx/watchdog.c b/chip/it83xx/watchdog.c
deleted file mode 100644
index f0e200c4ac..0000000000
--- a/chip/it83xx/watchdog.c
+++ /dev/null
@@ -1,135 +0,0 @@
-/* Copyright 2013 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 driver */
-
-#include "common.h"
-#include "cpu.h"
-#include "hooks.h"
-#include "hwtimer_chip.h"
-#include "panic.h"
-#include "registers.h"
-#include "task.h"
-#include "watchdog.h"
-
-/* Enter critical period or not. */
-static int wdt_warning_fired;
-
-/*
- * We use WDT_EXT_TIMER to trigger an interrupt just before the watchdog timer
- * will fire so that we can capture important state information before
- * being reset.
- */
-
-/* Magic value to tickle the watchdog register. */
-#define ITE83XX_WATCHDOG_MAGIC_WORD  0x5C
-/* Start to print warning message. */
-#define ITE83XX_WATCHDOG_WARNING_MS  CONFIG_AUX_TIMER_PERIOD_MS
-/* The interval to print warning message at critical period. */
-#define ITE83XX_WATCHDOG_CRITICAL_MS 30
-
-/* set warning timer */
-static void watchdog_set_warning_timer(int32_t ms, int init)
-{
-	ext_timer_ms(WDT_EXT_TIMER, EXT_PSR_32P768K_HZ, 1, 1, ms, init, 0);
-}
-
-void watchdog_warning_irq(void)
-{
-#ifdef CONFIG_SOFTWARE_PANIC
-	struct panic_data * const pdata_ptr = get_panic_data_write();
-
-#if defined(CHIP_CORE_NDS32)
-	pdata_ptr->nds_n8.ipc = get_ipc();
-#elif defined(CHIP_CORE_RISCV)
-	pdata_ptr->riscv.mepc = get_mepc();
-#endif
-#endif
-	/* clear interrupt status */
-	task_clear_pending_irq(et_ctrl_regs[WDT_EXT_TIMER].irq);
-
-	/* Reset warning timer. */
-	IT83XX_ETWD_ETXCTRL(WDT_EXT_TIMER) = 0x03;
-
-#if defined(CHIP_CORE_NDS32)
-	/*
-	 * The IPC (Interruption Program Counter) is the shadow stack register
-	 * of the PC (Program Counter). It stores the return address of program
-	 * (PC->IPC) when the ISR was called.
-	 *
-	 * The LP (Link Pointer) stores the program address of the next
-	 * sequential instruction for function call return purposes.
-	 * LP = PC+4 after a jump and link instruction (jal).
-	 */
-	panic_printf("Pre-WDT warning! IPC:%08x LP:%08x TASK_ID:%d\n",
-		get_ipc(), ilp, task_get_current());
-#elif defined(CHIP_CORE_RISCV)
-	panic_printf("Pre-WDT warning! MEPC:%08x RA:%08x TASK_ID:%d\n",
-		get_mepc(), ira, task_get_current());
-#endif
-
-	if (!wdt_warning_fired++)
-		/*
-		 * Reduce interval of warning timer, so we can print more
-		 * warning messages during critical period.
-		 */
-		watchdog_set_warning_timer(ITE83XX_WATCHDOG_CRITICAL_MS, 0);
-}
-
-void watchdog_reload(void)
-{
-	/* Reset warning timer. */
-	IT83XX_ETWD_ETXCTRL(WDT_EXT_TIMER) = 0x03;
-
-	/* Restart (tickle) watchdog timer. */
-	IT83XX_ETWD_EWDKEYR = ITE83XX_WATCHDOG_MAGIC_WORD;
-
-	if (wdt_warning_fired) {
-		wdt_warning_fired = 0;
-		/* Reset warning timer to default if watchdog is touched. */
-		watchdog_set_warning_timer(ITE83XX_WATCHDOG_WARNING_MS, 0);
-	}
-}
-DECLARE_HOOK(HOOK_TICK, watchdog_reload, HOOK_PRIO_DEFAULT);
-
-int watchdog_init(void)
-{
-	uint16_t wdt_count = CONFIG_WATCHDOG_PERIOD_MS * 1024 / 1000;
-
-	/* Unlock access to watchdog registers. */
-	IT83XX_ETWD_ETWCFG = 0x00;
-
-	/* Set WD timer to use 1.024kHz clock. */
-	IT83XX_ETWD_ET1PSR = 0x01;
-
-	/* Set WDT key match enabled and WDT clock to use ET1PSR. */
-	IT83XX_ETWD_ETWCFG = 0x30;
-
-#ifdef CONFIG_HIBERNATE
-	/* bit4: watchdog can be stopped. */
-	IT83XX_ETWD_ETWCTRL |= BIT(4);
-#else
-	/* Specify that watchdog cannot be stopped. */
-	IT83XX_ETWD_ETWCTRL = 0x00;
-#endif
-
-	/* Start WDT_EXT_TIMER (CONFIG_AUX_TIMER_PERIOD_MS ms). */
-	watchdog_set_warning_timer(ITE83XX_WATCHDOG_WARNING_MS, 1);
-
-	/* Start timer 1 (must be started for watchdog timer to run). */
-	IT83XX_ETWD_ET1CNTLLR = 0x00;
-
-	/*
-	 * Set watchdog timer to CONFIG_WATCHDOG_PERIOD_MS ms.
-	 * Writing CNTLL starts timer.
-	 */
-	IT83XX_ETWD_EWDCNTLHR = (wdt_count >> 8) & 0xff;
-	IT83XX_ETWD_EWDCNTLLR = wdt_count & 0xff;
-
-	/* Lock access to watchdog registers. */
-	IT83XX_ETWD_ETWCFG = 0x3f;
-
-	return EC_SUCCESS;
-}