55 строки
1.4 KiB
C
55 строки
1.4 KiB
C
/*
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* linux/include/asm-arm/arch-ixp2000/system.h
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*
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* Copyright (C) 2002 Intel Corp.
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* Copyricht (C) 2003-2005 MontaVista Software, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <asm/hardware.h>
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#include <asm/mach-types.h>
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static inline void arch_idle(void)
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{
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cpu_do_idle();
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}
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static inline void arch_reset(char mode)
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{
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local_irq_disable();
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/*
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* Reset flash banking register so that we are pointing at
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* RedBoot bank.
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*/
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if (machine_is_ixdp2401()) {
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*IXDP2X01_CPLD_FLASH_REG = ((0 >> IXDP2X01_FLASH_WINDOW_BITS)
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| IXDP2X01_CPLD_FLASH_INTERN);
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*IXDP2X01_CPLD_RESET_REG = 0xffffffff;
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}
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/*
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* On IXDP2801 we need to write this magic sequence to the CPLD
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* to cause a complete reset of the CPU and all external devices
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* and moves the flash bank register back to 0.
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*/
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if (machine_is_ixdp2801()) {
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unsigned long reset_reg = *IXDP2X01_CPLD_RESET_REG;
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reset_reg = 0x55AA0000 | (reset_reg & 0x0000FFFF);
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*IXDP2X01_CPLD_RESET_REG = reset_reg;
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mb();
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*IXDP2X01_CPLD_RESET_REG = 0x80000000;
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}
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/*
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* We do a reset all if we are PCI master. We could be a slave and we
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* don't want to do anything funky on the PCI bus.
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*/
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if (*IXP2000_STRAP_OPTIONS & CFG_PCI_BOOT_HOST) {
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*(IXP2000_RESET0) |= (RSTALL);
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}
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}
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