| 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or |
| 3 | * modify it under the terms of the GNU General Public License |
| 4 | * as published by the Free Software Foundation; either version 2 |
| 5 | * of the License, or (at your option) any later version. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | * You should have received a copy of the GNU General Public License |
| 13 | * along with this program; if not, write to the |
| 14 | * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 15 | * Boston, MA 02110-1301, USA. |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | #include <asm/reboot.h> |
| 20 | #include <asm/io.h> |
| 21 | |
| 22 | static void rdc321x_reset(void) |
| 23 | { |
| 24 | unsigned i; |
| 25 | |
| 26 | /* write to southbridge config register 0x41 |
| 27 | enable pci reset on cpu reset, make internal port 0x92 writeable |
| 28 | and switch port 0x92 to internal */ |
| 29 | outl(0x80003840, 0xCF8); |
| 30 | i = inl(0xCFC); |
| 31 | i |= 0x1600; |
| 32 | outl(i, 0xCFC); |
| 33 | |
| 34 | /* soft reset */ |
| 35 | outb(1, 0x92); |
| 36 | } |
| 37 | |
| 38 | static int __init rdc_setup_reset(void) |
| 39 | { |
| 40 | machine_ops.emergency_restart = rdc321x_reset; |
| 41 | return 0; |
| 42 | } |
| 43 | |
| 44 | arch_initcall(rdc_setup_reset); |
| 45 | |
