/*
- * linux/include/asm-arm/arch-ixp2400/system.h
+ * 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
{
cli();
- if (machine_is_ixdp2401() || machine_is_ixdp2801()) {
- *IXDP2X01_CPLD_FLASH_REG = ((0 >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN);
+ /*
+ * 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.