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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
* (C) 2003 Linux Networx, SuSE Linux AG
* (C) 2004 Tyan Computer
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.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 "i82801dbm.h"
#define NMI_OFF 0
void i82801dbm_enable_ioapic( struct device *dev)
{
uint32_t dword;
volatile uint32_t *ioapic_sba = (volatile uint32_t *)0xfec00000;
volatile uint32_t *ioapic_sbd = (volatile uint32_t *)0xfec00010;
dword = pci_read_config32(dev, GEN_CNTL);
dword |= (3 << 7); /* enable ioapic */
dword |= (1 <<13); /* coprocessor error enable */
dword |= (1 << 1); /* delay transaction enable */
dword |= (1 << 2); /* DMA collection buf enable */
pci_write_config32(dev, GEN_CNTL, dword);
printk_debug("ioapic southbridge enabled %x\n",dword);
*ioapic_sba=0;
*ioapic_sbd=(2<<24);
//lyh *ioapic_sba=3;
//lyh *ioapic_sbd=1;
*ioapic_sba=0;
dword=*ioapic_sbd;
printk_debug("Southbridge apic id = %x\n",dword);
if(dword!=(2<<24))
die("");
//lyh *ioapic_sba=3;
//lyh dword=*ioapic_sbd;
//lyh printk_debug("Southbridge apic DT = %x\n",dword);
//lyh if(dword!=1)
//lyh die("");
}
void i82801dbm_enable_serial_irqs( struct device *dev)
{
pci_write_config8(dev, SERIRQ_CNTL, (1 << 7)|(1 << 6)|((21 - 17) << 2)|(0<< 0));
}
void i82801dbm_lpc_route_dma( struct device *dev, uint8_t mask)
{
uint16_t word;
int i;
word = pci_read_config16(dev, PCI_DMA_CFG);
word &= ((1 << 10) - (1 << 8));
for(i = 0; i < 8; i++) {
if (i == 4)
continue;
word |= ((mask & (1 << i))? 3:1) << (i*2);
}
pci_write_config16(dev, PCI_DMA_CFG, word);
}
void i82801dbm_rtc_init(struct device *dev)
{
uint8_t byte;
uint32_t dword;
int rtc_failed;
byte = pci_read_config8(dev, GEN_PMCON_3);
rtc_failed = byte & RTC_FAILED;
if (rtc_failed) {
byte &= ~(1 << 1); /* preserve the power fail state */
pci_write_config8(dev, GEN_PMCON_3, byte);
}
dword = pci_read_config32(dev, GEN_STS);
rtc_failed |= dword & (1 << 2);
rtc_init(rtc_failed);
}
void i82801dbm_1f0_misc(struct device *dev)
{
pci_write_config16(dev, PCICMD, 0x014f);
pci_write_config32(dev, PMBASE, 0x00001001);
pci_write_config8(dev, ACPI_CNTL, 0x10);
pci_write_config32(dev, GPIO_BASE, 0x00001181);
pci_write_config8(dev, GPIO_CNTL, 0x10);
pci_write_config32(dev, PIRQA_ROUT, 0x0A05030B);
pci_write_config8(dev, PIRQE_ROUT, 0x07);
pci_write_config8(dev, RTC_CONF, 0x04);
pci_write_config8(dev, COM_DEC, 0x10); //lyh E0->
pci_write_config16(dev, LPC_EN, 0x000F); //LYH 000D->
}
static void enable_hpet(struct device *dev)
{
const unsigned long hpet_address = 0xfed0000;
uint32_t dword;
uint32_t code = (0 & 0x3);
dword = pci_read_config32(dev, GEN_CNTL);
dword |= (1 << 17); /* enable hpet */
/*Bits [16:15]Memory Address Range
00 FED0_0000h - FED0_03FFh
01 FED0_1000h - FED0_13FFh
10 FED0_2000h - FED0_23FFh
11 FED0_3000h - FED0_33FFh*/
dword &= ~(3 << 15); /* clear it */
dword |= (code<<15);
printk_debug("enabling HPET @0x%x\n", hpet_address | (code <<12) );
}
static void lpc_init(struct device *dev)
{
uint8_t byte;
int pwr_on=-1;
int nmi_option;
/* IO APIC initialization */
i82801dbm_enable_ioapic(dev);
i82801dbm_enable_serial_irqs(dev);
#ifdef SUSPICIOUS_LOOKING_CODE
// The ICH-4 datasheet does not mention this configuration register.
// This code may have been inherited (incorrectly) from code for the AMD 766 southbridge,
// which *does* support this functionality.
/* posted memory write enable */
byte = pci_read_config8(dev, 0x46);
pci_write_config8(dev, 0x46, byte | (1<<0));
#endif
/* power after power fail */
/* FIXME this doesn't work! */
/* Which state do we want to goto after g3 (power restored)?
* 0 == S0 Full On
* 1 == S5 Soft Off
*/
pci_write_config8(dev, GEN_PMCON_3, pwr_on?0:1);
printk_info("set power %s after power fail\n", pwr_on?"on":"off");
#if 0
/* Enable Error reporting */
/* Set up sync flood detected */
byte = pci_read_config8(dev, 0x47);
byte |= (1 << 1);
pci_write_config8(dev, 0x47, byte);
#endif
/* Set up NMI on errors */
byte = inb(0x61);
byte &= ~(1 << 3); /* IOCHK# NMI Enable */
byte &= ~(1 << 2); /* PCI SERR# Enable */
outb(byte, 0x61);
byte = inb(0x70);
nmi_option = NMI_OFF;
get_option(&nmi_option, "nmi");
if (nmi_option) {
byte &= ~(1 << 7); /* set NMI */
outb(byte, 0x70);
}
/* Initialize the real time clock */
i82801dbm_rtc_init(dev);
i82801dbm_lpc_route_dma(dev, 0xff);
/* Initialize isa dma */
isa_dma_init();
i82801dbm_1f0_misc(dev);
/* Initialize the High Precision Event Timers */
enable_hpet(dev);
}
static void i82801dbm_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->flags = IORESOURCE_IO | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
res = new_resource(dev, IOINDEX_SUBTRACTIVE(1, 0));
res->flags = IORESOURCE_MEM | IORESOURCE_SUBTRACTIVE | IORESOURCE_ASSIGNED;
}
static void i82801dbm_lpc_enable_resources(device_t dev)
{
pci_dev_enable_resources(dev);
enable_childrens_resources(dev);
}
static struct device_operations lpc_ops = {
.read_resources = i82801dbm_lpc_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = i82801dbm_lpc_enable_resources,
.init = lpc_init,
.scan_bus = scan_static_bus,
.enable = i82801dbm_enable,
};
static const struct pci_driver lpc_driver __pci_driver = {
.ops = &lpc_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.device = PCI_DEVICE_ID_INTEL_82801DBM_LPC,
};
|
