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https://github.com/AsahiLinux/u-boot
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35b65dd8ef
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>
31 lines
751 B
C
31 lines
751 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2007-2008
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* Stelian Pop <stelian@popies.net>
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* Lead Tech Design <www.leadtechdesign.com>
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*
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* (C) Copyright 2013
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* Bo Shen <voice.shen@atmel.com>
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*/
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#include <common.h>
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#include <cpu_func.h>
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#include <asm/io.h>
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#include <asm/arch/hardware.h>
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#include <asm/arch/at91_rstc.h>
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/* Reset the cpu by telling the reset controller to do so */
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void reset_cpu(void)
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{
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at91_rstc_t *rstc = (at91_rstc_t *)ATMEL_BASE_RSTC;
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writel(AT91_RSTC_KEY
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| AT91_RSTC_CR_PROCRST /* Processor Reset */
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| AT91_RSTC_CR_PERRST /* Peripheral Reset */
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#ifdef CONFIG_AT91RESET_EXTRST
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| AT91_RSTC_CR_EXTRST /* External Reset (assert nRST pin) */
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#endif
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, &rstc->cr);
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/* never reached */
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do { } while (1);
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}
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