diff options
Diffstat (limited to 'src/superio/ite/it8705f/early_serial.c')
| -rw-r--r-- | src/superio/ite/it8705f/early_serial.c | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/src/superio/ite/it8705f/early_serial.c b/src/superio/ite/it8705f/early_serial.c deleted file mode 100644 index ccc92c2dbf..0000000000 --- a/src/superio/ite/it8705f/early_serial.c +++ /dev/null @@ -1,82 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de> - * - * 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 "it8705f.h" - -/* The base address is 0x2e or 0x4e, depending on config bytes. */ -#define SIO_BASE 0x2e -#define SIO_INDEX SIO_BASE -#define SIO_DATA (SIO_BASE + 1) - -/* Global configuration registers. */ -#define IT8705F_CONFIG_REG_CC 0x02 /* Configure Control (write-only). */ -#define IT8705F_CONFIG_REG_LDN 0x07 /* Logical Device Number. */ -#define IT8705F_CONFIG_REG_CONFIGSEL 0x22 /* Configuration Select. */ - -/* WTF? 0x23 and 0x24 are swapped here (when compared to other IT87xx). */ -#define IT8705F_CONFIG_REG_CLOCKSEL 0x24 /* Clock Selection, Flash I/F. */ -#define IT8705F_CONFIG_REG_SWSUSP 0x23 /* Software Suspend. */ - -#define IT8705F_CONFIGURATION_PORT 0x2e /* Write-only. */ - -static void it8705f_sio_write(u8 ldn, u8 index, u8 value) -{ - outb(IT8705F_CONFIG_REG_LDN, SIO_BASE); - outb(ldn, SIO_DATA); - outb(index, SIO_BASE); - outb(value, SIO_DATA); -} - -/* Enable the serial port(s). */ -static void it8705f_enable_serial(device_t dev, u16 iobase) -{ - /* (1) Enter the configuration state (MB PnP mode). */ - - /* Perform MB PnP setup to put the SIO chip at 0x2e. */ - /* Base address 0x2e: 0x87 0x01 0x55 0x55. */ - /* Base address 0x4e: 0x87 0x01 0x55 0xaa. */ - outb(0x87, IT8705F_CONFIGURATION_PORT); - outb(0x01, IT8705F_CONFIGURATION_PORT); - outb(0x55, IT8705F_CONFIGURATION_PORT); - outb(0x55, IT8705F_CONFIGURATION_PORT); - - /* (2) Modify the data of configuration registers. */ - - /* - * Select the chip to configure (if there's more than one). - * Set bit 7 to select JP3=1, clear bit 7 to select JP3=0. - * If this register is not written, both chips are configured. - */ - /* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CONFIGSEL, 0x00); */ - - /* Enable serial port(s). */ - it8705f_sio_write(IT8705F_SP1, 0x30, 0x1); /* Serial port 1 */ - it8705f_sio_write(IT8705F_SP2, 0x30, 0x1); /* Serial port 2 */ - - /* Select 24MHz CLKIN (set bit 0). */ - it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CLOCKSEL, 0x01); - - /* Clear software suspend mode (clear bit 0). TODO: Needed? */ - /* it8705f_sio_write(0x00, IT8705F_CONFIG_REG_SWSUSP, 0x00); */ - - /* (3) Exit the configuration state (MB PnP mode). */ - it8705f_sio_write(0x00, IT8705F_CONFIG_REG_CC, 0x02); -} |