mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
71 lines
1.5 KiB
C
71 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2017 Intel Corporation
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*/
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#include <common.h>
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#include <watchdog.h>
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#include <asm/scu.h>
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/* Hardware timeout in seconds */
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#define WDT_PRETIMEOUT 15
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#define WDT_TIMEOUT_MIN (1 + WDT_PRETIMEOUT)
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#define WDT_TIMEOUT_MAX 170
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#define WDT_DEFAULT_TIMEOUT 90
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#ifndef CONFIG_WATCHDOG_TIMEOUT_MSECS
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#define WATCHDOG_HEARTBEAT 60000
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#else
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#define WATCHDOG_HEARTBEAT CONFIG_WATCHDOG_TIMEOUT_MSECS
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#endif
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enum {
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SCU_WATCHDOG_START = 0,
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SCU_WATCHDOG_STOP = 1,
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SCU_WATCHDOG_KEEPALIVE = 2,
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SCU_WATCHDOG_SET_ACTION_ON_TIMEOUT = 3,
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};
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void hw_watchdog_reset(void)
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{
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static unsigned long last;
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unsigned long now;
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if (gd->timer)
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now = timer_get_us();
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else
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now = rdtsc() / 1000;
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/* Do not flood SCU */
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if (last > now)
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last = 0;
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if (unlikely((now - last) > (WDT_PRETIMEOUT / 2) * 1000000)) {
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last = now;
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scu_ipc_simple_command(IPCMSG_WATCHDOG_TIMER, SCU_WATCHDOG_KEEPALIVE);
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}
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}
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int hw_watchdog_disable(void)
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{
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return scu_ipc_simple_command(IPCMSG_WATCHDOG_TIMER, SCU_WATCHDOG_STOP);
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}
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void hw_watchdog_init(void)
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{
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u32 timeout = WATCHDOG_HEARTBEAT / 1000;
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int in_size;
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struct ipc_wd_start {
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u32 pretimeout;
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u32 timeout;
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} ipc_wd_start = { timeout - WDT_PRETIMEOUT, timeout };
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/*
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* SCU expects the input size for watchdog IPC
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* to be based on 4 bytes
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*/
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in_size = DIV_ROUND_UP(sizeof(ipc_wd_start), 4);
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scu_ipc_command(IPCMSG_WATCHDOG_TIMER, SCU_WATCHDOG_START,
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(u32 *)&ipc_wd_start, in_size, NULL, 0);
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}
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