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75 lines
1.6 KiB
75 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* |
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* Copyright (C) 2012 Thomas Langer <[email protected]> |
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* Copyright (C) 2012 John Crispin <[email protected]> |
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*/ |
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#include <linux/init.h> |
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#include <linux/io.h> |
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#include <linux/pm.h> |
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#include <asm/reboot.h> |
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#include <linux/export.h> |
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#include <lantiq_soc.h> |
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/* |
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* Dummy implementation. Used to allow platform code to find out what |
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* source was booted from |
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*/ |
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unsigned char ltq_boot_select(void) |
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{ |
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return BS_SPI; |
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} |
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#define BOOT_REG_BASE (KSEG1 | 0x1F200000) |
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#define BOOT_PW1_REG (BOOT_REG_BASE | 0x20) |
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#define BOOT_PW2_REG (BOOT_REG_BASE | 0x24) |
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#define BOOT_PW1 0x4C545100 |
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#define BOOT_PW2 0x0051544C |
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#define WDT_REG_BASE (KSEG1 | 0x1F8803F0) |
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#define WDT_PW1 0x00BE0000 |
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#define WDT_PW2 0x00DC0000 |
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static void machine_restart(char *command) |
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{ |
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local_irq_disable(); |
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/* reboot magic */ |
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ltq_w32(BOOT_PW1, (void *)BOOT_PW1_REG); /* 'LTQ\0' */ |
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ltq_w32(BOOT_PW2, (void *)BOOT_PW2_REG); /* '\0QTL' */ |
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ltq_w32(0, (void *)BOOT_REG_BASE); /* reset Bootreg RVEC */ |
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/* watchdog magic */ |
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ltq_w32(WDT_PW1, (void *)WDT_REG_BASE); |
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ltq_w32(WDT_PW2 | |
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(0x3 << 26) | /* PWL */ |
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(0x2 << 24) | /* CLKDIV */ |
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(0x1 << 31) | /* enable */ |
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(1), /* reload */ |
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(void *)WDT_REG_BASE); |
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unreachable(); |
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} |
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static void machine_halt(void) |
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{ |
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local_irq_disable(); |
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unreachable(); |
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} |
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static void machine_power_off(void) |
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{ |
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local_irq_disable(); |
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unreachable(); |
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} |
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static int __init mips_reboot_setup(void) |
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{ |
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_machine_restart = machine_restart; |
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_machine_halt = machine_halt; |
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pm_power_off = machine_power_off; |
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return 0; |
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} |
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arch_initcall(mips_reboot_setup);
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