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