mirror of
https://github.com/brain-hackers/u-boot-brain
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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>
84 lines
1.8 KiB
C
84 lines
1.8 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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/*
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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/cache.h>
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#include <asm/armv7.h>
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#include <linux/compiler.h>
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void __weak cpu_cache_initialization(void){}
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int cleanup_before_linux_select(int flags)
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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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* we turn off caches etc ...
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*/
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#ifndef CONFIG_SPL_BUILD
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disable_interrupts();
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#endif
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if (flags & CBL_DISABLE_CACHES) {
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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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v7_outer_cache_disable();
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/*
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* After D-cache is flushed and before it is disabled there may
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* be some new valid entries brought into the cache. We are
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* sure that these lines are not dirty and will not affect our
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* execution. (because unwinding the call-stack and setting a
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* bit in CP15 SCTRL is all we did during this. We have not
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* pushed anything on to the stack. Neither have we affected
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* any static data) So just invalidate the entire d-cache again
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* to avoid coherency problems for kernel
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*/
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invalidate_dcache_all();
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icache_disable();
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invalidate_icache_all();
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} else {
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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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flush_dcache_all();
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invalidate_icache_all();
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icache_enable();
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}
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/*
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* Some CPU need more cache attention before starting the kernel.
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*/
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cpu_cache_initialization();
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return 0;
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}
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int cleanup_before_linux(void)
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{
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return cleanup_before_linux_select(CBL_ALL);
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}
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