928f3248b3
This supports the system reset via PSCI for ARMv7 SoCs. Because the system reset is not supported on PSCI 0.1, let's define CONFIG_ARMV7_PSCI_1_0. (it is supported since PSCI 0.2, but there is no CONFIG to enable it in U-Boot for now.) Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
37 lines
735 B
C
37 lines
735 B
C
/*
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* Copyright (C) 2012-2014 Panasonic Corporation
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* Copyright (C) 2015-2016 Socionext Inc.
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* Author: Masahiro Yamada <yamada.masahiro@socionext.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <linux/io.h>
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#include <asm/secure.h>
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#include "sc-regs.h"
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/* If PSCI is enabled, this is used for SYSTEM_RESET function */
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#ifdef CONFIG_ARMV7_PSCI
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#define __SECURE __secure
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#else
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#define __SECURE
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#endif
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void __SECURE reset_cpu(unsigned long ignored)
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{
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u32 tmp;
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writel(5, SC_IRQTIMSET); /* default value */
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tmp = readl(SC_SLFRSTSEL);
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tmp &= ~0x3; /* mask [1:0] */
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tmp |= 0x0; /* XRST reboot */
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writel(tmp, SC_SLFRSTSEL);
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tmp = readl(SC_SLFRSTCTL);
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tmp |= 0x1;
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writel(tmp, SC_SLFRSTCTL);
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}
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