diff options
author | Nikolay Petukhov <nikolay.petukhov@gmail.com> | 2007-06-06 10:26:00 +0000 |
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committer | Uwe Hermann <uwe@hermann-uwe.de> | 2007-06-06 10:26:00 +0000 |
commit | ecbe8e5d5cac1c37d9ce40bae39d4f763075fce0 (patch) | |
tree | 0d1a7e8c65dd877c8d029d8be023b984885a27c8 /src/superio/winbond/w83977f/w83977f_early_serial.c | |
parent | 66020709559e481e1d9b062156fe01016db25c60 (diff) |
Add support for the Winbond W83977F-A Super I/O.
Signed-off-by: Nikolay Petukhov <nikolay.petukhov@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2714 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/superio/winbond/w83977f/w83977f_early_serial.c')
-rw-r--r-- | src/superio/winbond/w83977f/w83977f_early_serial.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/superio/winbond/w83977f/w83977f_early_serial.c b/src/superio/winbond/w83977f/w83977f_early_serial.c new file mode 100644 index 0000000000..b9f73087d7 --- /dev/null +++ b/src/superio/winbond/w83977f/w83977f_early_serial.c @@ -0,0 +1,45 @@ +/* + * This file is part of the LinuxBIOS project. + * + * Copyright (C) 2007 Nikolay Petukhov <nikolay.petukhov@gmail.com> + * + * 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 "w83977f.h" + +static inline void pnp_enter_ext_func_mode(device_t dev) +{ + unsigned int port = dev >> 8; + outb(0x87, port); + outb(0x87, port); +} + +static void pnp_exit_ext_func_mode(device_t dev) +{ + unsigned int port = dev >> 8; + outb(0xaa, port); +} + +static void w83977f_enable_serial(device_t dev, unsigned int iobase) +{ + pnp_enter_ext_func_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_ext_func_mode(dev); +} |