diff options
Diffstat (limited to 'src/superio/winbond/w83627hf/early_init.c')
| -rw-r--r-- | src/superio/winbond/w83627hf/early_init.c | 37 |
1 files changed, 27 insertions, 10 deletions
diff --git a/src/superio/winbond/w83627hf/early_init.c b/src/superio/winbond/w83627hf/early_init.c index 66b40980a2..db616aee38 100644 --- a/src/superio/winbond/w83627hf/early_init.c +++ b/src/superio/winbond/w83627hf/early_init.c @@ -2,8 +2,9 @@ * This file is part of the coreboot project. * * Copyright (C) 2000 AG Electronics Ltd. - * Copyright 2003-2004 Linux Networx - * Copyright 2004 Tyan + * Copyright (C) 2003-2004 Linux Networx + * Copyright (C) 2004 Tyan + * Copyright (C) 2010 Win Enterprises (anishp@win-ent.com) * * 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 @@ -21,18 +22,34 @@ */ #include <arch/io.h> +#include <device/pnp.h> #include "w83627hf.h" -void w83627hf_disable_dev(device_t dev) +static void pnp_enter_ext_func_mode(device_t dev) { - pnp_set_logical_device(dev); - pnp_set_enable(dev, 0); + u16 port = dev >> 8; + outb(0x87, port); + outb(0x87, port); } -void w83627hf_enable_dev(device_t dev, u16 iobase) +static void pnp_exit_ext_func_mode(device_t dev) { - pnp_set_logical_device(dev); - pnp_set_enable(dev, 0); - pnp_set_iobase(dev, PNP_IDX_IO0, iobase); - pnp_set_enable(dev, 1); + u16 port = dev >> 8; + outb(0xaa, port); +} + +/* + * We duplicate this function, for non-ROMCC boards, from early_serial.c to + * work around a limitation of ROMCC where we can no make early_serial.c into + * link-time symbols and #include early_serial.c. + */ +void w83627hf_set_clksel_48(device_t dev) +{ + u8 reg8; + + pnp_enter_ext_func_mode(dev); + reg8 = pnp_read_config(dev, 0x24); + reg8 |= (1 << 6); /* Set CLKSEL (clock input on pin 1) to 48MHz. */ + pnp_write_config(dev, 0x24, reg8); + pnp_exit_ext_func_mode(dev); } |