mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-13 22:56:17 +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>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2012 Stephen Warren
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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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/arch/wdog.h>
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#include <efi_loader.h>
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#define RESET_TIMEOUT 10
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/*
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* The Raspberry Pi firmware uses the RSTS register to know which partiton
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* to boot from. The partiton value is spread into bits 0, 2, 4, 6, 8, 10.
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* Partiton 63 is a special partition used by the firmware to indicate halt.
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*/
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#define BCM2835_WDOG_RSTS_RASPBERRYPI_HALT 0x555
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/* max ticks timeout */
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#define BCM2835_WDOG_MAX_TIMEOUT 0x000fffff
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#ifdef CONFIG_BCM2835_WDT
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extern void hw_watchdog_disable(void);
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#else
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void hw_watchdog_disable(void) {}
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#endif
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__efi_runtime_data struct bcm2835_wdog_regs *wdog_regs =
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(struct bcm2835_wdog_regs *)BCM2835_WDOG_PHYSADDR;
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void __efi_runtime reset_cpu(ulong ticks)
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{
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uint32_t rstc, timeout;
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if (ticks == 0) {
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hw_watchdog_disable();
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timeout = RESET_TIMEOUT;
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} else
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timeout = ticks & BCM2835_WDOG_MAX_TIMEOUT;
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rstc = readl(&wdog_regs->rstc);
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rstc &= ~BCM2835_WDOG_RSTC_WRCFG_MASK;
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rstc |= BCM2835_WDOG_RSTC_WRCFG_FULL_RESET;
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writel(BCM2835_WDOG_PASSWORD | timeout, &wdog_regs->wdog);
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writel(BCM2835_WDOG_PASSWORD | rstc, &wdog_regs->rstc);
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}
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#ifdef CONFIG_EFI_LOADER
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void __efi_runtime EFIAPI efi_reset_system(
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enum efi_reset_type reset_type,
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efi_status_t reset_status,
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unsigned long data_size, void *reset_data)
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{
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u32 val;
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switch (reset_type) {
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case EFI_RESET_COLD:
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case EFI_RESET_WARM:
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case EFI_RESET_PLATFORM_SPECIFIC:
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reset_cpu(0);
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break;
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case EFI_RESET_SHUTDOWN:
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/*
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* We set the watchdog hard reset bit here to distinguish this reset
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* from the normal (full) reset. bootcode.bin will not reboot after a
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* hard reset.
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*/
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val = readl(&wdog_regs->rsts);
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val |= BCM2835_WDOG_PASSWORD;
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val |= BCM2835_WDOG_RSTS_RASPBERRYPI_HALT;
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writel(val, &wdog_regs->rsts);
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reset_cpu(0);
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break;
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}
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while (1) { }
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}
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efi_status_t efi_reset_system_init(void)
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{
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return efi_add_runtime_mmio(&wdog_regs, sizeof(*wdog_regs));
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}
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#endif
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