| 1 | // SPDX-License-Identifier: GPL-2.0-only |
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| 2 | /* |
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| 3 | * arch/arm/plat-spear/restart.c |
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| 4 | * |
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| 5 | * SPEAr platform specific restart functions |
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| 6 | * |
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| 7 | * Copyright (C) 2009 ST Microelectronics |
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| 8 | * Viresh Kumar <vireshk@kernel.org> |
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| 9 | */ |
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| 10 | #include <linux/io.h> |
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| 11 | #include <linux/amba/sp810.h> |
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| 12 | #include <linux/reboot.h> |
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| 13 | #include <asm/system_misc.h> |
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| 14 | #include "spear.h" |
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| 15 | #include "generic.h" |
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| 16 | |
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| 17 | #define SPEAR13XX_SYS_SW_RES (VA_MISC_BASE + 0x204) |
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| 18 | void spear_restart(enum reboot_mode mode, const char *cmd) |
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| 19 | { |
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| 20 | if (mode == REBOOT_SOFT) { |
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| 21 | /* software reset, Jump into ROM at address 0 */ |
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| 22 | soft_restart(0); |
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| 23 | } else { |
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| 24 | /* hardware reset, Use on-chip reset capability */ |
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| 25 | #ifdef CONFIG_ARCH_SPEAR13XX |
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| 26 | writel_relaxed(0x01, SPEAR13XX_SYS_SW_RES); |
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| 27 | #endif |
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| 28 | #if defined(CONFIG_ARCH_SPEAR3XX) || defined(CONFIG_ARCH_SPEAR6XX) |
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| 29 | sysctl_soft_reset((void __iomem *)VA_SPEAR_SYS_CTRL_BASE); |
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| 30 | #endif |
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| 31 | } |
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| 32 | } |
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| 33 | |
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