diff options
Diffstat (limited to 'src/superio/ite/it8671f/early_serial.c')
| -rw-r--r-- | src/superio/ite/it8671f/early_serial.c | 104 |
1 files changed, 0 insertions, 104 deletions
diff --git a/src/superio/ite/it8671f/early_serial.c b/src/superio/ite/it8671f/early_serial.c deleted file mode 100644 index b5b94df2fa..0000000000 --- a/src/superio/ite/it8671f/early_serial.c +++ /dev/null @@ -1,104 +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. - */ - -#include <arch/io.h> -#include <device/pnp_type.h> -#include <device/pnp.h> -#include <stdint.h> -#include "it8671f.h" - -/* The base address is 0x3f0, 0x3bd, or 0x370, depending on config bytes. */ -#define SIO_BASE 0x3f0 -#define SIO_INDEX SIO_BASE -#define SIO_DATA (SIO_BASE + 1) - -/* Global configuration registers. */ -#define IT8671F_CONFIG_REG_CC 0x02 /* Configure Control (write-only). */ -#define IT8671F_CONFIG_REG_LDN 0x07 /* Logical Device Number. */ -#define IT8671F_CONFIG_REG_LDE 0x23 /* PnP Logical Device Enable. */ -#define IT8671F_CONFIG_REG_SWSUSP 0x24 /* Software Suspend. */ - -#define IT8671F_CONFIGURATION_PORT 0x0279 /* Write-only. */ - -/* - * Special values used for entering MB PnP mode. The first four bytes of - * each line determine the address port, the last four are data. - */ -static const u8 init_values[] = { - 0x6a, 0xb5, 0xda, 0xed, /**/ 0xf6, 0xfb, 0x7d, 0xbe, - 0xdf, 0x6f, 0x37, 0x1b, /**/ 0x0d, 0x86, 0xc3, 0x61, - 0xb0, 0x58, 0x2c, 0x16, /**/ 0x8b, 0x45, 0xa2, 0xd1, - 0xe8, 0x74, 0x3a, 0x9d, /**/ 0xce, 0xe7, 0x73, 0x39, -}; - -static void it8671f_sio_write(u8 ldn, u8 index, u8 value) -{ - outb(IT8671F_CONFIG_REG_LDN, SIO_BASE); - outb(ldn, SIO_DATA); - outb(index, SIO_BASE); - outb(value, SIO_DATA); -} - -/* Enter the configuration state (MB PnP mode). */ -static void it8671f_enter_conf(void) -{ - int i; - - /* Perform MB PnP setup to put the SIO chip at 0x3f0. */ - /* Base address 0x3f0: 0x86 0x80 0x55 0x55. */ - /* Base address 0x3bd: 0x86 0x80 0x55 0xaa. */ - /* Base address 0x370: 0x86 0x80 0xaa 0x55. */ - outb(0x86, IT8671F_CONFIGURATION_PORT); - outb(0x80, IT8671F_CONFIGURATION_PORT); - outb(0x55, IT8671F_CONFIGURATION_PORT); - outb(0x55, IT8671F_CONFIGURATION_PORT); - - /* Sequentially write the 32 special values. */ - for (i = 0; i < 32; i++) - outb(init_values[i], SIO_BASE); -} - -/* Exit the configuration state (MB PnP mode). */ -static void it8671f_exit_conf(void) -{ - it8671f_sio_write(0x00, IT8671F_CONFIG_REG_CC, 0x02); -} - -/* Select 48MHz CLKIN (24MHz is the default). */ -void it8671f_48mhz_clkin(void) -{ - it8671f_enter_conf(); - it8671f_sio_write(0x00, IT8671F_CONFIG_REG_SWSUSP, (1 << 6)); - it8671f_exit_conf(); -} - -/* Enable the serial port(s). */ -void it8671f_enable_serial(pnp_devfn_t dev, u16 iobase) -{ - it8671f_enter_conf(); - - /* - * Allow all devices to be enabled. Bits: FDC (0), Com1 (1), Com2 (2), - * PP (3), Reserved (4), KBCK (5), KBCM (6), Reserved (7). - */ - it8671f_sio_write(0x00, IT8671F_CONFIG_REG_LDE, 0x6f); - - /* Enable serial port(s). */ - it8671f_sio_write(IT8671F_SP1, 0x30, 0x01); /* Serial port 1 */ - it8671f_sio_write(IT8671F_SP2, 0x30, 0x01); /* Serial port 2 */ - - it8671f_exit_conf(); -} |