Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / drivers / watchdog / ftwdt010_wdt.c

diff --git a/qemu/roms/u-boot/drivers/watchdog/ftwdt010_wdt.c b/qemu/roms/u-boot/drivers/watchdog/ftwdt010_wdt.c
new file mode 100644 (file)
index 0000000..11f58f5
--- /dev/null
+++ b/qemu/roms/u-boot/drivers/watchdog/ftwdt010_wdt.c
@@ -0,0 +1,92 @@
+/*
+ * Watchdog driver for the FTWDT010 Watch Dog Driver
+ *
+ * (c) Copyright 2004 Faraday Technology Corp. (www.faraday-tech.com)
+ * Based on sa1100_wdt.c by Oleg Drokin <green@crimea.edu>
+ * Based on SoftDog driver by Alan Cox <alan@redhat.com>
+ *
+ * Copyright (C) 2011 Andes Technology Corporation
+ * Macpaul Lin, Andes Technology Corporation <macpaul@andestech.com>
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ *
+ * 27/11/2004 Initial release, Faraday.
+ * 12/01/2011 Port to u-boot, Macpaul Lin.
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <asm/io.h>
+#include <faraday/ftwdt010_wdt.h>
+
+/*
+ * Set the watchdog time interval.
+ * Counter is 32 bit.
+ */
+int ftwdt010_wdt_settimeout(unsigned int timeout)
+{
+       unsigned int reg;
+
+       struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
+
+       debug("Activating WDT..\n");
+
+       /* Check if disabled */
+       if (readl(&wd->wdcr) & ~FTWDT010_WDCR_ENABLE) {
+               printf("sorry, watchdog is disabled\n");
+               return -1;
+       }
+
+       /*
+        * In a 66MHz system,
+        * if you set WDLOAD as 0x03EF1480 (66000000)
+        * the reset timer is 1 second.
+        */
+       reg = FTWDT010_WDLOAD(timeout * FTWDT010_TIMEOUT_FACTOR);
+
+       writel(reg, &wd->wdload);
+
+       return 0;
+}
+
+void ftwdt010_wdt_reset(void)
+{
+       struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
+
+       /* clear control register */
+       writel(0, &wd->wdcr);
+
+       /* Write Magic number */
+       writel(FTWDT010_WDRESTART_MAGIC, &wd->wdrestart);
+
+       /* Enable WDT */
+       writel((FTWDT010_WDCR_RST | FTWDT010_WDCR_ENABLE), &wd->wdcr);
+}
+
+void ftwdt010_wdt_disable(void)
+{
+       struct ftwdt010_wdt *wd = (struct ftwdt010_wdt *)CONFIG_FTWDT010_BASE;
+
+       debug("Deactivating WDT..\n");
+
+       /*
+        * It was defined with CONFIG_WATCHDOG_NOWAYOUT in Linux
+        *
+        * Shut off the timer.
+        * Lock it in if it's a module and we defined ...NOWAYOUT
+        */
+       writel(0, &wd->wdcr);
+}
+
+#if defined(CONFIG_HW_WATCHDOG)
+void hw_watchdog_reset(void)
+{
+       ftwdt010_wdt_reset();
+}
+
+void hw_watchdog_init(void)
+{
+       /* set timer in ms */
+       ftwdt010_wdt_settimeout(CONFIG_FTWDT010_HW_TIMEOUT * 1000);
+}
+#endif