mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-06 11:16:15 +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>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2008 Texas Insturments
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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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* Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
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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/secure.h>
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#include <linux/compiler.h>
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/*
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* sdelay() - simple spin loop.
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*
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* Will delay execution by roughly (@loops * 2) cycles.
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* This is necessary to be used before timers are accessible.
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*
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* A value of "0" will results in 2^64 loops.
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*/
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void sdelay(unsigned long loops)
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{
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__asm__ volatile ("1:\n" "subs %0, %0, #1\n"
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"b.ne 1b" : "=r" (loops) : "0"(loops) : "cc");
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}
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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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* disable interrupt and turn off caches etc ...
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*/
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disable_interrupts();
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/*
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* Turn off I-cache and invalidate it
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*/
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icache_disable();
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invalidate_icache_all();
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/*
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* turn off D-cache
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* dcache_disable() in turn flushes the d-cache and disables MMU
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*/
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dcache_disable();
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invalidate_dcache_all();
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return 0;
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}
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#ifdef CONFIG_ARMV8_PSCI
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static void relocate_secure_section(void)
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{
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#ifdef CONFIG_ARMV8_SECURE_BASE
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size_t sz = __secure_end - __secure_start;
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memcpy((void *)CONFIG_ARMV8_SECURE_BASE, __secure_start, sz);
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flush_dcache_range(CONFIG_ARMV8_SECURE_BASE,
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CONFIG_ARMV8_SECURE_BASE + sz + 1);
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invalidate_icache_all();
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#endif
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}
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void armv8_setup_psci(void)
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{
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relocate_secure_section();
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secure_ram_addr(psci_setup_vectors)();
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secure_ram_addr(psci_arch_init)();
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}
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#endif
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