diff options
Diffstat (limited to 'src/southbridge/via/vt82c686/early_serial.c')
| -rw-r--r-- | src/southbridge/via/vt82c686/early_serial.c | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/src/southbridge/via/vt82c686/early_serial.c b/src/southbridge/via/vt82c686/early_serial.c deleted file mode 100644 index 29881e19b5..0000000000 --- a/src/southbridge/via/vt82c686/early_serial.c +++ /dev/null @@ -1,87 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2006-2007 Uwe Hermann <uwe@hermann-uwe.de> - * Copyright (C) 2007 Corey Osgood <corey_osgood@verizon.net> - * - * 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. - */ - -/* This has been ported to the VIA VT82C686(A/B) from the SMSC FDC37M60x - * by Corey Osgood. See vt82c686.h for more information. */ - -#include <arch/io.h> -#include <device/pci_ids.h> -#include "vt82c686.h" - -#define SIO_INDEX 0x3f0 -#define SIO_DATA 0x3f1 - -/** - * Configure the chip by writing the byte 'value' into the register - * specified by 'index'. - * - * @param index The index of the register to modify. - * @param value The value to write into the register. - */ -static void vt82c686_sio_write(uint8_t index, uint8_t value) -{ - outb(index, SIO_INDEX); - outb(value, SIO_DATA); -} - -/** - * Enable the serial port(s) of the VT82C686(A/B) Super I/O chip. - * - * @param dev TODO - * @param iobase TODO - */ -static void vt82c686_enable_serial(device_t dev, unsigned iobase) -{ - uint8_t reg; - device_t sbdev; - - /* TODO: Use info from 'dev' and 'iobase'. */ - /* TODO: Only enable one serial port (depending on config) or both? */ - - /* (1) Enter configuration mode (set Function 0 Rx85[1] = 1). */ - - /* Find the southbridge. Die upon error. */ - sbdev = pci_locate_device(PCI_ID(PCI_VENDOR_ID_VIA, - PCI_DEVICE_ID_VIA_82C686), 0); - // sbdev = PCI_DEV(0, 7, 0); - if (sbdev == PCI_DEV_INVALID) { - /* Serial output is not yet working at this point, but - * die() emits the POST code 0xff and halts the CPU, too. */ - die("Southbridge not found.\n"); - } - - /* Enable Super-I/O (bit 0) and Super-I/O Configuration (bit 1). */ - reg = pci_read_config8(sbdev, 0x85); - pci_write_config8(sbdev, 0x85, reg | 0x3); /* Set bits 0 and 1. */ - - /* (2) Configure the chip. */ - - /* Enable serial port 1 (set bit 2) and 2 (set bit 3). */ - vt82c686_sio_write(VT82C686_FS, 0xf); - - // vt82c686_sio_write(VT82C686_POWER, 0x00); /* No powerdown */ - // vt82c686_sio_write(VT82C686_SP_CTRL, 0x00); /* Normal operation */ - vt82c686_sio_write(VT82C686_SP1, 0xfe); /* SP1: 0x3f8 */ - vt82c686_sio_write(VT82C686_SP2, 0xbe); /* SP2: 0x2f8 */ - - /* Enable high speed on serial port 1 (set bit 6) and 2 (set bit 7). */ - vt82c686_sio_write(VT82C686_SP_CFG, 0xc0); - - /* (3) Exit configuration mode (set Function 0 Rx85[1] = 0). */ - reg = pci_read_config8(sbdev, 0x85); - pci_write_config8(sbdev, 0x85, reg & 0xfd); /* Clear bit 1. */ -} |