diff options
Diffstat (limited to 'src/superio/smsc/kbc1100/early_init.c')
-rw-r--r-- | src/superio/smsc/kbc1100/early_init.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/superio/smsc/kbc1100/early_init.c b/src/superio/smsc/kbc1100/early_init.c new file mode 100644 index 0000000000..d075f9c2f7 --- /dev/null +++ b/src/superio/smsc/kbc1100/early_init.c @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2011 Advanced Micro Devices, Inc. + * Copyright (C) 2014 Edward O'Callaghan <eocallaghan@alterapraxis.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; 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 + */ + +/* Pre-RAM driver for the SMSC KBC1100 Super I/O chip */ + +#include <arch/io.h> +#include <device/pnp.h> +#include <stdint.h> + +#include "kbc1100.h" + +static void pnp_enter_conf_state(device_t dev) +{ + u16 port = dev >> 8; + outb(0x55, port); +} + +static void pnp_exit_conf_state(device_t dev) +{ + u16 port = dev >> 8; + outb(0xaa, port); +} + +void kbc1100_early_serial(device_t dev, u16 iobase) +{ + pnp_enter_conf_state(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_conf_state(dev); +} + +void kbc1100_early_init(u16 port) +{ + device_t dev; + dev = PNP_DEV (port, KBC1100_KBC); + pnp_enter_conf_state(dev); + + /* Serial IRQ enabled */ + outb(0x25, port); + outb(0x04, port + 1); + + /* Enable keyboard */ + pnp_set_logical_device(dev); + pnp_set_enable(dev, 0); + pnp_set_iobase(dev, PNP_IDX_IO0, 0x60); + pnp_set_iobase(dev, PNP_IDX_IO1, 0x64); + pnp_set_irq(dev, 0x70, 1); /* IRQ 1 */ + pnp_set_irq(dev, 0x72, 12); /* IRQ 12 */ + pnp_set_enable(dev, 1); + + /* Enable EC Channel 0 */ + dev = PNP_DEV (port, KBC1100_EC0); + pnp_set_logical_device(dev); + pnp_set_enable(dev, 1); + + pnp_exit_conf_state(dev); + + /* disable the 1s timer */ + outb(0xE7, 0x64); +} |