diff options
Diffstat (limited to 'include/asm-arm/arch-ixp2000/system.h')
| -rw-r--r-- | include/asm-arm/arch-ixp2000/system.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/asm-arm/arch-ixp2000/system.h b/include/asm-arm/arch-ixp2000/system.h new file mode 100644 index 000000000000..4f489cc0dfa5 --- /dev/null +++ b/include/asm-arm/arch-ixp2000/system.h @@ -0,0 +1,54 @@ +/* + * 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); + } +} |