u-boot/arch/arm/cpu/armv7/bcmnsp/reset.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2014 Broadcom Corporation.
 */

#include <common.h>
#include <cpu_func.h>
#include <asm/io.h>

#define CRU_RESET_OFFSET	0x1803F184

void reset_cpu(void)
{
	/* Reset the cpu by setting software reset request bit */
	writel(0x1, CRU_RESET_OFFSET);

	while (1)
		;	/* loop forever till reset */
}
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: bcmnsp: Add bcmnsp u-architecture Base support for the Broadcom NSP SoC. Based on iproc-common and the SoC specific reset function. Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Steve Rae <srae@broadcom.com> 2014-08-11 20:58:24 +00:00			`/*`
			`* Copyright 2014 Broadcom Corporation.`
			`*/`

			`#include <common.h>`
common: Move reset_cpu() to the CPU header Move this function out of common.h and into a relevant header file. Signed-off-by: Simon Glass <sjg@chromium.org> 2019-12-28 17:45:01 +00:00			`#include <cpu_func.h>`
arm: bcmnsp: Add bcmnsp u-architecture Base support for the Broadcom NSP SoC. Based on iproc-common and the SoC specific reset function. Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Steve Rae <srae@broadcom.com> 2014-08-11 20:58:24 +00:00			`#include <asm/io.h>`

			`#define CRU_RESET_OFFSET 0x1803F184`

reset: Remove addr parameter from reset_cpu() Historically, the reset_cpu() function had an `addr` parameter which was meant to pass in an address of the reset vector location, where the CPU should reset to. This feature is no longer used anywhere in U-Boot as all reset_cpu() implementations now ignore the passed value. Generic code has been added which always calls reset_cpu() with `0` which means this feature can no longer be used easily anyway. Over time, many implementations seem to have "misunderstood" the existence of this parameter as a way to customize/parameterize the reset (e.g. COLD vs WARM resets). As this is not properly supported, the code will almost always not do what it is intended to (because all call-sites just call reset_cpu() with 0). To avoid confusion and to clean up the codebase from unused left-overs of the past, remove the `addr` parameter entirely. Code which intends to support different kinds of resets should be rewritten as a sysreset driver instead. This transformation was done with the following coccinelle patch: @@ expression argvalue; @@ - reset_cpu(argvalue) + reset_cpu() @@ identifier argname; type argtype; @@ - reset_cpu(argtype argname) + reset_cpu(void) { ... } Signed-off-by: Harald Seiler <hws@denx.de> Reviewed-by: Simon Glass <sjg@chromium.org> 2020-12-15 15:47:52 +00:00			`void reset_cpu(void)`
arm: bcmnsp: Add bcmnsp u-architecture Base support for the Broadcom NSP SoC. Based on iproc-common and the SoC specific reset function. Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Steve Rae <srae@broadcom.com> 2014-08-11 20:58:24 +00:00			`{`
			`/* Reset the cpu by setting software reset request bit */`
			`writel(0x1, CRU_RESET_OFFSET);`

			`while (1)`
			`; /* loop forever till reset */`
			`}`