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/* Copyright 2019 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.
*/
/* Workaround for ISH5.4 reset prep handling before full PM is enabled */
#include "common.h"
#include "hooks.h"
#include "interrupts.h"
#include "registers.h"
#include "system.h"
#include "task.h"
/*
* IRQ fires when we receive a RESET_PREP message from AP. This happens at S0
* entry.
*/
static void reset_prep_wr_isr(void)
{
system_reset(SYSTEM_RESET_HARD);
}
DECLARE_IRQ(ISH_RESET_PREP_IRQ, reset_prep_wr_isr);
void reset_prep_init(void)
{
/* Clear reset bit */
ISH_RST_REG = 0;
/* Clear reset history register from previous boot. */
CCU_RST_HST = CCU_RST_HST;
/* Unmask reset prep avail interrupt mask */
PMU_RST_PREP = 0;
/* Clear TCG Enable, no trunk level clock gating*/
CCU_TCG_ENABLE = 0;
/* Clear BCG Enable, no block level clock gating*/
CCU_BCG_ENABLE = 0;
task_enable_irq(ISH_RESET_PREP_IRQ);
}
DECLARE_HOOK(HOOK_INIT, reset_prep_init, HOOK_PRIO_DEFAULT);
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