diff options
Diffstat (limited to 'src/superio/nsc/pc87417/early_init.c')
| -rw-r--r-- | src/superio/nsc/pc87417/early_init.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/src/superio/nsc/pc87417/early_init.c b/src/superio/nsc/pc87417/early_init.c new file mode 100644 index 0000000000..a635beb61d --- /dev/null +++ b/src/superio/nsc/pc87417/early_init.c @@ -0,0 +1,54 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2000 AG Electronics Ltd. + * Copyright (C) 2003-2004 Linux Networx + * Copyright (C) 2004 Tyan + * + * 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; either version 2 of the License, or + * (at your option) any later version. + * + * 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/romcc_io.h> +#include "pc87417.h" + +static void pc87417_disable_dev(device_t dev) +{ + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); +} + +static void pc87417_enable_dev(device_t dev, u16 iobase) +{ + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_iobase(dev, PNP_IDX_IO0, iobase); + pnp_set_enable(dev, 1); +} + +static void xbus_cfg(device_t dev) +{ + u8 i, data; + u16 xbus_index; + + pnp_set_logical_device(dev); + /* Select proper BIOS size (4MB). */ + pnp_write_config(dev, PC87417_XMEMCNF2, + (pnp_read_config(dev, PC87417_XMEMCNF2)) | 0x04); + xbus_index = pnp_read_iobase(dev, 0x60); + + /* Enable writes to devices attached to XCS0 (XBUS Chip Select 0). */ + for (i = 0; i <= 0xf; i++) + outb((i << 4), xbus_index + PC87417_HAP0); +} |