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>
69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2011-2013 Xilinx Inc.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/microblaze_intc.h>
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#include <asm/processor.h>
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#include <watchdog.h>
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#define XWT_CSR0_WRS_MASK 0x00000008 /* Reset status Mask */
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#define XWT_CSR0_WDS_MASK 0x00000004 /* Timer state Mask */
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#define XWT_CSR0_EWDT1_MASK 0x00000002 /* Enable bit 1 Mask*/
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#define XWT_CSRX_EWDT2_MASK 0x00000001 /* Enable bit 2 Mask */
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struct watchdog_regs {
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u32 twcsr0; /* 0x0 */
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u32 twcsr1; /* 0x4 */
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u32 tbr; /* 0x8 */
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};
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static struct watchdog_regs *watchdog_base =
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(struct watchdog_regs *)CONFIG_WATCHDOG_BASEADDR;
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void hw_watchdog_reset(void)
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{
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u32 reg;
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/* Read the current contents of TCSR0 */
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reg = readl(&watchdog_base->twcsr0);
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/* Clear the watchdog WDS bit */
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if (reg & (XWT_CSR0_EWDT1_MASK | XWT_CSRX_EWDT2_MASK))
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writel(reg | XWT_CSR0_WDS_MASK, &watchdog_base->twcsr0);
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}
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void hw_watchdog_disable(void)
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{
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u32 reg;
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/* Read the current contents of TCSR0 */
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reg = readl(&watchdog_base->twcsr0);
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writel(reg & ~XWT_CSR0_EWDT1_MASK, &watchdog_base->twcsr0);
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writel(~XWT_CSRX_EWDT2_MASK, &watchdog_base->twcsr1);
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puts("Watchdog disabled!\n");
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}
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static void hw_watchdog_isr(void *arg)
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{
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hw_watchdog_reset();
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}
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void hw_watchdog_init(void)
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{
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int ret;
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writel((XWT_CSR0_WRS_MASK | XWT_CSR0_WDS_MASK | XWT_CSR0_EWDT1_MASK),
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&watchdog_base->twcsr0);
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writel(XWT_CSRX_EWDT2_MASK, &watchdog_base->twcsr1);
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ret = install_interrupt_handler(CONFIG_WATCHDOG_IRQ,
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hw_watchdog_isr, NULL);
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if (ret)
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puts("Watchdog IRQ registration failed.");
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}
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