2 * linux/include/asm-arm/arch-ixp2000/system.h
4 * Copyright (C) 2002 Intel Corp.
5 * Copyricht (C) 2003-2005 MontaVista Software, Inc.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <asm/hardware.h>
13 #include <asm/mach-types.h>
15 static inline void arch_idle(void)
20 static inline void arch_reset(char mode)
25 * Reset flash banking register so that we are pointing at
28 if (machine_is_ixdp2401()) {
29 ixp2000_reg_write(IXDP2X01_CPLD_FLASH_REG,
30 ((0 >> IXDP2X01_FLASH_WINDOW_BITS)
31 | IXDP2X01_CPLD_FLASH_INTERN));
32 ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0xffffffff);
36 * On IXDP2801 we need to write this magic sequence to the CPLD
37 * to cause a complete reset of the CPU and all external devices
38 * and move the flash bank register back to 0.
40 if (machine_is_ixdp2801()) {
41 unsigned long reset_reg = *IXDP2X01_CPLD_RESET_REG;
43 reset_reg = 0x55AA0000 | (reset_reg & 0x0000FFFF);
44 ixp2000_reg_write(IXDP2X01_CPLD_RESET_REG, reset_reg);
45 ixp2000_reg_wrb(IXDP2X01_CPLD_RESET_REG, 0x80000000);
48 ixp2000_reg_wrb(IXP2000_RESET0, RSTALL);