Zheng Bao | 9db833b | 2009-12-28 09:59:44 +0000 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2000 AG Electronics Ltd. |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
Zheng Bao | 9db833b | 2009-12-28 09:59:44 +0000 | [diff] [blame] | 15 | */ |
| 16 | |
Stefan Reinauer | 24d1d4b | 2013-03-21 11:51:41 -0700 | [diff] [blame] | 17 | #include <arch/io.h> |
Edward O'Callaghan | fc4e855 | 2015-01-04 16:05:59 +1100 | [diff] [blame] | 18 | #include <device/pnp.h> |
| 19 | #include <stdint.h> |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 20 | #include "pc97317.h" |
| 21 | |
| 22 | #define PM_DEV PNP_DEV(0x2e, PC97317_PM) |
| 23 | #define PM_BASE 0xe8 |
| 24 | |
Uwe Hermann | a69d978 | 2010-11-15 19:35:14 +0000 | [diff] [blame] | 25 | /* The PC97317 needs clocks to be set up before the serial port will operate. */ |
Edward O'Callaghan | fc4e855 | 2015-01-04 16:05:59 +1100 | [diff] [blame] | 26 | void pc97317_enable_serial(pnp_devfn_t dev, u16 iobase) |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 27 | { |
Uwe Hermann | a69d978 | 2010-11-15 19:35:14 +0000 | [diff] [blame] | 28 | /* Set base address of power management unit. */ |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 29 | pnp_set_logical_device(PM_DEV); |
| 30 | pnp_set_enable(dev, 0); |
| 31 | pnp_set_iobase(dev, PNP_IDX_IO0, PM_BASE); |
| 32 | pnp_set_enable(dev, 1); |
| 33 | |
Uwe Hermann | a69d978 | 2010-11-15 19:35:14 +0000 | [diff] [blame] | 34 | /* Use on-chip clock multiplier. */ |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 35 | outb(0x03, PM_BASE); |
| 36 | outb(inb(PM_BASE + 1) | 0x07, PM_BASE + 1); |
Zheng Bao | 9db833b | 2009-12-28 09:59:44 +0000 | [diff] [blame] | 37 | |
Uwe Hermann | a69d978 | 2010-11-15 19:35:14 +0000 | [diff] [blame] | 38 | /* Wait for the clock to stabilise. */ |
Stefan Reinauer | 30a4a93 | 2010-02-15 23:27:48 +0000 | [diff] [blame] | 39 | while(!(inb(PM_BASE + 1) & 0x80)) |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 40 | ; |
| 41 | |
Uwe Hermann | a69d978 | 2010-11-15 19:35:14 +0000 | [diff] [blame] | 42 | /* Set the base address of the port. */ |
arch import user (historical) | 577f185 | 2005-07-06 17:11:02 +0000 | [diff] [blame] | 43 | pnp_set_logical_device(dev); |
| 44 | pnp_set_enable(dev, 0); |
| 45 | pnp_set_iobase(dev, PNP_IDX_IO0, iobase); |
| 46 | pnp_set_enable(dev, 1); |
| 47 | } |