diff options
Diffstat (limited to 'src/southbridge/amd/sb700/sb700_reset.c')
-rw-r--r-- | src/southbridge/amd/sb700/sb700_reset.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/southbridge/amd/sb700/sb700_reset.c b/src/southbridge/amd/sb700/sb700_reset.c new file mode 100644 index 0000000000..44af1d8bd4 --- /dev/null +++ b/src/southbridge/amd/sb700/sb700_reset.c @@ -0,0 +1,62 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Advanced Micro Devices, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <arch/io.h> + +#define PCI_DEV(BUS, DEV, FN) ( \ + (((BUS) & 0xFFF) << 20) | \ + (((DEV) & 0x1F) << 15) | \ + (((FN) & 0x7) << 12)) + +typedef u32 device_t; + +static void pci_write_config8(device_t dev, unsigned where, unsigned char value) +{ + unsigned addr; + addr = (dev>>4) | where; + outl(0x80000000 | (addr & ~3), 0xCF8); + outb(value, 0xCFC + (addr & 3)); +} + +static void pci_write_config32(device_t dev, unsigned where, unsigned value) +{ + unsigned addr; + addr = (dev>>4) | where; + outl(0x80000000 | (addr & ~3), 0xCF8); + outl(value, 0xCFC); +} + +static unsigned pci_read_config32(device_t dev, unsigned where) +{ + unsigned addr; + addr = (dev>>4) | where; + outl(0x80000000 | (addr & ~3), 0xCF8); + return inl(0xCFC); +} + +#include "../../../northbridge/amd/amdk8/reset_test.c" + +void hard_reset(void) +{ + set_bios_reset(); + /* Try rebooting through port 0xcf9 */ + /* Actually it is not a real hard_reset --- it only reset coherent link table, but not reset link freq and width */ + outb((0 << 3) | (0 << 2) | (1 << 1), 0xcf9); + outb((0 << 3) | (1 << 2) | (1 << 1), 0xcf9); +} |