2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 Uwe Hermann <uwe@hermann-uwe.de>
5 * Copyright (C) 2010 Keith Hui <buurin@gmail.com>
6 * Copyright (C) 2010 Idwer Vollering <vidwer@gmail.com>
7 * Copyright (C) 2010 Tobias Diedrich <ranma+coreboot@gmail.com>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
25 #include <console/console.h>
27 #include <device/device.h>
28 #include <device/pci.h>
29 #include <device/pci_ids.h>
30 #include <device/smbus.h>
34 #if CONFIG_HAVE_ACPI_RESUME == 1
35 extern u8 acpi_slp_type;
36 int acpi_get_sleep_type(void);
39 static void pwrmgt_enable(struct device *dev)
41 struct southbridge_intel_i82371eb_config *sb = dev->chip_info;
42 u32 reg, gpo = sb->gpo;
44 /* Sets the base address of power management ports. */
45 pci_write_config16(dev, PMBA, DEFAULT_PMBASE | 1);
47 /* Set Power Management IO Space Enable bit */
48 u8 val = pci_read_config8(dev, PMREGMISC);
49 pci_write_config8(dev, PMREGMISC, val | 1);
51 /* set global control:
52 * bit25 (lid_pol): 1=invert lid polarity
53 * bit24 (sm_freeze): 1=freeze idle and standby timers
54 * bit16 (end of smi): 0=disable smi assertion (cleared by hw)
55 * bits8-15,26: global standby timer inital count 127 * 4minutes
56 * bit2 (thrm_pol): 1=active low THRM#
57 * bit0 (smi_en): 1=disable smi generation upon smi event
59 reg = (sb->lid_polarity<<25)|
62 (sb->thrm_polarity<<2);
63 outl(reg, DEFAULT_PMBASE + GLBCTL);
65 /* set processor control:
66 * bit12 (stpclk_en): 1=enable stopping of host clk on lvl3
67 * bit11 (sleep_en): 1=enable slp# assertion on lvl3
68 * bit9 (cc_en): 1=enable clk control with lvl2 and lvl3 regs
70 outl(0, DEFAULT_PMBASE + PCNTRL);
72 /* disable smi event enables */
73 outw(0, DEFAULT_PMBASE + GLBEN);
74 outl(0, DEFAULT_PMBASE + DEVCTL);
76 /* set default gpo value.
77 * power-on default is 0x7fffbfffh */
79 /* only 8bit access allowed */
80 outb( gpo & 0xff, DEFAULT_PMBASE + GPO0);
81 outb((gpo >> 8) & 0xff, DEFAULT_PMBASE + GPO1);
82 outb((gpo >> 16) & 0xff, DEFAULT_PMBASE + GPO2);
83 outb((gpo >> 24) & 0xff, DEFAULT_PMBASE + GPO3);
86 "%s: gpo default missing in devicetree.cb!\n", __func__);
89 /* Clear status events. */
90 outw(0xffff, DEFAULT_PMBASE + PMSTS);
91 outw(0xffff, DEFAULT_PMBASE + GPSTS);
92 outw(0xffff, DEFAULT_PMBASE + GLBSTS);
93 outl(0xffffffff, DEFAULT_PMBASE + DEVSTS);
95 #if CONFIG_HAVE_ACPI_RESUME == 1
96 /* this reads PMCNTRL, so we have to call it before writing the
98 acpi_slp_type = acpi_get_sleep_type();
101 /* set PMCNTRL default */
102 outw(SUS_TYP_S0|SCI_EN, DEFAULT_PMBASE + PMCNTRL);
105 static void pwrmgt_read_resources(struct device *dev)
107 struct resource *res;
109 pci_dev_read_resources(dev);
111 res = new_resource(dev, 1);
112 res->base = DEFAULT_PMBASE;
115 res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED |
118 res = new_resource(dev, 2);
119 res->base = SMBUS_IO_BASE;
122 res->flags = IORESOURCE_IO | IORESOURCE_ASSIGNED | IORESOURCE_FIXED |
127 static const struct smbus_bus_operations lops_smbus_bus = {
130 static const struct device_operations smbus_ops = {
131 .read_resources = pwrmgt_read_resources,
132 .set_resources = pci_dev_set_resources,
133 .enable_resources = pci_dev_enable_resources,
135 .scan_bus = scan_static_bus,
136 .enable = pwrmgt_enable,
137 .ops_pci = 0, /* No subsystem IDs on 82371EB! */
138 .ops_smbus_bus = &lops_smbus_bus,
141 /* Note: There's no SMBus on 82371FB/SB/MX and 82437MX. */
143 /* Intel 82371AB/EB/MB */
144 static const struct pci_driver smbus_driver __pci_driver = {
146 .vendor = PCI_VENDOR_ID_INTEL,
147 .device = PCI_DEVICE_ID_INTEL_82371AB_SMB_ACPI,