diff options
Diffstat (limited to 'src/northbridge/via/vx800/early_serial.c')
-rw-r--r-- | src/northbridge/via/vx800/early_serial.c | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/src/northbridge/via/vx800/early_serial.c b/src/northbridge/via/vx800/early_serial.c deleted file mode 100644 index 8393aa79b1..0000000000 --- a/src/northbridge/via/vx800/early_serial.c +++ /dev/null @@ -1,94 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2009 One Laptop per Child, Association, Inc. - * - * 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. -*/ - -/* - * Enable the serial devices on the VIA - */ -#include <arch/io.h> - -/* The base address is 0x15c, 0x2e, depending on config bytes */ - -#define SIO_BASE 0x3f0 -#define SIO_DATA SIO_BASE+1 - -static void vx800_writepnpaddr(uint8_t val) -{ - outb(val, 0x2e); - outb(val, 0xeb); -} - -static void vx800_writepnpdata(uint8_t val) -{ - outb(val, 0x2f); - outb(val, 0xeb); -} - -static void vx800_writesiobyte(uint16_t reg, uint8_t val) -{ - outb(val, reg); -} - -static void vx800_writesioword(uint16_t reg, uint16_t val) -{ - outw(val, reg); -} - -/* regs we use: 85, and the southbridge devfn is defined by the - mainboard - */ - -void enable_vx800_serial(void) -{ - post_code(0x06); - outb(0x03, 0x22); - - // turn on pnp - vx800_writepnpaddr(0x87); - vx800_writepnpaddr(0x87); - // now go ahead and set up com1. - // set address - vx800_writepnpaddr(0x7); - vx800_writepnpdata(0x2); - // enable serial out - vx800_writepnpaddr(0x30); - vx800_writepnpdata(0x1); - // serial port 1 base address (FEh) - vx800_writepnpaddr(0x60); - vx800_writepnpdata(0xfe); - // serial port 1 IRQ (04h) - vx800_writepnpaddr(0x70); - vx800_writepnpdata(0x4); - // serial port 1 control - vx800_writepnpaddr(0xf0); - vx800_writepnpdata(0x2); - // turn of pnp - vx800_writepnpaddr(0xaa); - - // set up reg to set baud rate. - vx800_writesiobyte(0x3fb, 0x80); - // Set 115 kb - vx800_writesioword(0x3f8, 1); - // Set 9.6 kb - // WRITESIOWORD(0x3f8, 12) - // now set no parity, one stop, 8 bits - vx800_writesiobyte(0x3fb, 3); - // now turn on RTS, DRT - vx800_writesiobyte(0x3fc, 3); - // Enable interrupts - vx800_writesiobyte(0x3f9, 0xf); - // should be done. Dump a char for fun. - vx800_writesiobyte(0x3f8, 48); - post_code(0x07); -} |