diff options
Diffstat (limited to 'src/superio/nuvoton/nct5104d/early_init.c')
-rwxr-xr-x | src/superio/nuvoton/nct5104d/early_init.c | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/src/superio/nuvoton/nct5104d/early_init.c b/src/superio/nuvoton/nct5104d/early_init.c new file mode 100755 index 0000000..9c0cf0f --- /dev/null +++ b/src/superio/nuvoton/nct5104d/early_init.c @@ -0,0 +1,47 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 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; 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/io.h> +#include <arch/romcc_io.h> +#include <device/pnp_def.h> +#include "nct5104d.h" + +static void pnp_enter_extended_mode(device_t dev) +{ + u16 port = dev >> 8; + outb(0x87,port); + outb(0x87,port); +} + +static void pnp_exit_extended_mode(device_t dev) +{ + u16 port = dev >> 8; + outb(0xaa,port); +} + +static void nct5104d_enable_serial(device_t dev, u16 iobase) +{ + pnp_enter_extended_mode(dev); + pnp_set_logical_device(dev); + pnp_set_enable(dev,0); + pnp_set_iobase(dev,PNP_IDX_IO0, iobase); + pnp_set_enable(dev,1); + pnp_exit_extended_mode(dev); +} |