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d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
80 lines
1.4 KiB
C
80 lines
1.4 KiB
C
#include <common.h>
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#include <dm.h>
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#include <os.h>
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#include <wdt.h>
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struct alarm_wdt_priv {
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unsigned int timeout_sec;
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};
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static void alarm_handler(int sig)
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{
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const char *msg = "!!! ALARM !!!\n";
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os_write(2, msg, strlen(msg));
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os_fd_restore();
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os_set_alarm_handler(NULL);
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os_raise_sigalrm();
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}
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static int alarm_wdt_start(struct udevice *dev, u64 timeout, ulong flags)
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{
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struct alarm_wdt_priv *priv = dev_get_priv(dev);
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unsigned int sec;
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timeout = DIV_ROUND_UP(timeout, 1000);
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sec = min_t(u64, UINT_MAX, timeout);
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priv->timeout_sec = sec;
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os_alarm(0);
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os_set_alarm_handler(alarm_handler);
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os_alarm(sec);
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return 0;
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}
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static int alarm_wdt_stop(struct udevice *dev)
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{
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os_alarm(0);
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os_set_alarm_handler(NULL);
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return 0;
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}
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static int alarm_wdt_reset(struct udevice *dev)
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{
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struct alarm_wdt_priv *priv = dev_get_priv(dev);
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os_alarm(priv->timeout_sec);
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return 0;
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}
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static int alarm_wdt_expire_now(struct udevice *dev, ulong flags)
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{
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alarm_handler(0);
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return 0;
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}
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static const struct wdt_ops alarm_wdt_ops = {
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.start = alarm_wdt_start,
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.reset = alarm_wdt_reset,
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.stop = alarm_wdt_stop,
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.expire_now = alarm_wdt_expire_now,
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};
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static const struct udevice_id alarm_wdt_ids[] = {
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{ .compatible = "sandbox,alarm-wdt" },
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{}
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};
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U_BOOT_DRIVER(alarm_wdt_sandbox) = {
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.name = "alarm_wdt_sandbox",
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.id = UCLASS_WDT,
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.of_match = alarm_wdt_ids,
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.ops = &alarm_wdt_ops,
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.priv_auto = sizeof(struct alarm_wdt_priv),
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};
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