u-boot/arch/arm/mach-at91/arm926ejs/cache.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * (C) Copyright 2016
 * Heiko Schocher, DENX Software Engineering, hs@denx.de.
 */
#include <linux/types.h>
#include <common.h>

void enable_caches(void)
{
#ifndef CONFIG_SYS_ICACHE_OFF
	icache_enable();
#endif
}

#ifndef CONFIG_SYS_ICACHE_OFF
/* Invalidate entire I-cache and branch predictor array */
void invalidate_icache_all(void)
{
	unsigned long i = 0;

	asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));
}
#else
void invalidate_icache_all(void)
{
}
#endif
SPDX: Convert all of our single license tags to Linux Kernel style 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> 2018-05-06 21:58:06 +00:00			`// SPDX-License-Identifier: GPL-2.0+`
arm, at91: add icache support add at least icache support for at91 based boards. This speeds up NOR flash access on an at91sam9g15 based board from 15.2 seconds reading 8 MiB from a SPI NOR flash to 5.7 seconds. Signed-off-by: Heiko Schocher <hs@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Andreas Bießmann <andreas@biessmann.org> 2016-08-17 07:13:25 +00:00			`/*`
			`* (C) Copyright 2016`
			`* Heiko Schocher, DENX Software Engineering, hs@denx.de.`
			`*/`
			`#include <linux/types.h>`
			`#include <common.h>`

			`void enable_caches(void)`
			`{`
			`#ifndef CONFIG_SYS_ICACHE_OFF`
			`icache_enable();`
			`#endif`
			`}`

			`#ifndef CONFIG_SYS_ICACHE_OFF`
			`/* Invalidate entire I-cache and branch predictor array */`
			`void invalidate_icache_all(void)`
			`{`
			`unsigned long i = 0;`

			`asm ("mcr p15, 0, %0, c7, c5, 0" : : "r" (i));`
			`}`
			`#else`
			`void invalidate_icache_all(void)`
			`{`
			`}`
			`#endif`