u-boot/include/winbond_w83627.h
Stefan Roese 85056932f2 misc: Add simple driver to enable the legacy UART on Winbond Super IO chips
On most x86 boards, the legacy serial ports (io address 0x3f8/0x2f8)
are provided by a superio chip connected to the LPC bus. We must
program the superio chip so that serial ports are available for us.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2016-01-28 13:53:30 +08:00

36 lines
1.1 KiB
C

/*
* Copyright (C) 2016 Stefan Roese <sr@denx.de>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _WINBOND_W83627_H_
#define _WINBOND_W83627_H_
/* I/O address of Winbond Super IO chip */
#define WINBOND_IO_PORT 0x2e
/* Logical device number */
#define W83627DHG_FDC 0 /* Floppy */
#define W83627DHG_PP 1 /* Parallel port */
#define W83627DHG_SP1 2 /* Com1 */
#define W83627DHG_SP2 3 /* Com2 */
#define W83627DHG_KBC 5 /* PS/2 keyboard & mouse */
#define W83627DHG_SPI 6 /* Serial peripheral interface */
#define W83627DHG_WDTO_PLED 8 /* WDTO#, PLED */
#define W83627DHG_ACPI 10 /* ACPI */
#define W83627DHG_HWM 11 /* Hardware monitor */
#define W83627DHG_PECI_SST 12 /* PECI, SST */
/**
* Configure the base I/O port of the specified serial device and enable the
* serial device.
*
* @dev: high 8 bits = super I/O port, low 8 bits = logical device number
* @iobase: processor I/O port address to assign to this serial device
* @irq: processor IRQ number to assign to this serial device
*/
void winbond_enable_serial(uint dev, uint iobase, uint irq);
#endif /* _WINBOND_W83627_H_ */