mirror of
https://github.com/AsahiLinux/u-boot
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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>
63 lines
1.1 KiB
C
63 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.de>
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Alex Zuepke <azu@sysgo.de>
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*/
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/*
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* CPU specific code
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*/
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#include <common.h>
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#include <command.h>
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#include <asm/system.h>
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#include <asm/io.h>
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static void cache_flush(void);
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int cleanup_before_linux (void)
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{
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/*
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* this function is called just before we call linux
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* it prepares the processor for linux
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*
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* just disable everything that can disturb booting linux
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*/
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disable_interrupts ();
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/* turn off I-cache */
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icache_disable();
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dcache_disable();
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/* flush I-cache */
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cache_flush();
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return (0);
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}
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/* flush I/D-cache */
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static void cache_flush (void)
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{
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unsigned long i = 0;
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asm ("mcr p15, 0, %0, c7, c5, 0": :"r" (i));
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}
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#define RST_BASE 0x90030000
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#define RSRR 0x00
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#define RCSR 0x04
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__attribute__((noreturn)) void reset_cpu(ulong addr __attribute__((unused)))
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{
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/* repeat endlessly */
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while (1) {
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writel(0, RST_BASE + RCSR);
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writel(1, RST_BASE + RSRR);
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}
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}
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