1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2005 AMD
* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
*
* 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.
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pnp.h>
#include <device/pci_ids.h>
#include <device/pci_ops.h>
#include <pc80/mc146818rtc.h>
#include <pc80/isa-dma.h>
#include <arch/io.h>
#include <arch/ioapic.h>
#include "bcm5785.h"
static void lpc_init(device_t dev)
{
/* Initialize the real time clock */
cmos_init(0);
/* Initialize isa dma */
isa_dma_init();
}
static void bcm5785_lpc_read_resources(device_t dev)
{
struct resource *res;
/* Get the normal pci resources of this device */
pci_dev_read_resources(dev);
/* Add an extra subtractive resource for both memory and I/O. */
res = new_resource(dev, IOINDEX_SUBTRACTIVE(0, 0));
res->base = 0;
res->size = 0x1000;
res->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
res->base = 0xff800000;
res->size = 0x00800000; /* 8 MB for flash */
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE |
IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
res = new_resource(dev, 3); /* IOAPIC */
res->base = IO_APIC_ADDR;
res->size = 0x00001000;
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED | IORESOURCE_FIXED;
}
/**
* Enable resources for children devices.
*
* @param dev The device whos children's resources are to be enabled.
*/
static void bcm5785_lpc_enable_childrens_resources(device_t dev)
{
struct bus *link;
uint32_t reg;
reg = pci_read_config8(dev, 0x44);
for (link = dev->link_list; link; link = link->next) {
device_t child;
for (child = link->children; child; child = child->sibling) {
if (child->enabled && (child->path.type == DEVICE_PATH_PNP)) {
struct resource *res;
for (res = child->resource_list; res; res = res->next) {
unsigned long base, end; // don't need long long
if (!(res->flags & IORESOURCE_IO)) continue;
base = res->base;
end = resource_end(res);
printk(BIOS_DEBUG, "bcm5785lpc decode:%s, base=0x%08lx, end=0x%08lx\n",dev_path(child),base, end);
switch (base) {
case 0x60: //KBC
case 0x64:
reg |= (1<<29); break;
case 0x3f8: // COM1
reg |= (1<<6); break;
case 0x2f8: // COM2
reg |= (1<<7); break;
case 0x378: // Parallel 1
reg |= (1<<0); break;
case 0x3f0: // FD0
reg |= (1<<26); break;
case 0x220: // Audio 0
reg |= (1<<14); break;
case 0x300: // MIDI 0
reg |= (1<<18); break;
}
}
}
}
}
pci_write_config32(dev, 0x44, reg);
}
static void bcm5785_lpc_enable_resources(device_t dev)
{
pci_dev_enable_resources(dev);
bcm5785_lpc_enable_childrens_resources(dev);
}
static void lpci_set_subsystem(device_t dev, unsigned vendor, unsigned device)
{
pci_write_config32(dev, 0x40,
((device & 0xffff) << 16) | (vendor & 0xffff));
}
static struct pci_operations lops_pci = {
.set_subsystem = lpci_set_subsystem,
};
static struct device_operations lpc_ops = {
.read_resources = bcm5785_lpc_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = bcm5785_lpc_enable_resources,
.init = lpc_init,
.scan_bus = scan_lpc_bus,
// .enable = bcm5785_enable,
.ops_pci = &lops_pci,
};
static const struct pci_driver lpc_driver __pci_driver = {
.ops = &lpc_ops,
.vendor = PCI_VENDOR_ID_SERVERWORKS,
.device = PCI_DEVICE_ID_SERVERWORKS_BCM5785_LPC,
};
|
