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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007-2010 coresystems GmbH
*
* 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 <stdint.h>
#include <cf9_reset.h>
#include <device/pnp_ops.h>
#include <device/pci_ops.h>
#include <console/console.h>
#include <arch/romstage.h>
#include <cpu/x86/lapic.h>
#include <device/pci_def.h>
#include <device/pnp_def.h>
#include <northbridge/intel/i945/i945.h>
#include <northbridge/intel/i945/raminit.h>
#include <southbridge/intel/i82801gx/i82801gx.h>
#include <superio/winbond/common/winbond.h>
#include <superio/winbond/w83627ehg/w83627ehg.h>
#include <southbridge/intel/common/pmclib.h>
#define SERIAL_DEV PNP_DEV(0x4e, W83627EHG_SP1)
#define SUPERIO_DEV PNP_DEV(0x4e, 0)
static void ich7_enable_lpc(void)
{
// Enable Serial IRQ
pci_write_config8(PCI_DEV(0, 0x1f, 0), SERIRQ_CNTL, 0xd0);
// Set COM1/COM2 decode range
pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_IO_DEC, 0x0010);
// Enable COM1/COM2/KBD/SuperIO1+2
pci_write_config16(PCI_DEV(0, 0x1f, 0), LPC_EN, CNF2_LPC_EN
| CNF1_LPC_EN | KBC_LPC_EN | FDD_LPC_EN | COMA_LPC_EN
| COMB_LPC_EN);
// Enable HWM at 0x290
pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN1_DEC, 0x00fc0291);
// io 0x300 decode
pci_write_config32(PCI_DEV(0, 0x1f, 0), GEN4_DEC, 0x00000301);
}
/* This box has one superio
* Also set up the GPIOs from the beginning. This is the "no schematic
* but safe anyways" method.
*/
static void early_superio_config_w83627ehg(void)
{
pnp_devfn_t dev;
dev = SUPERIO_DEV;
pnp_enter_conf_state(dev);
pnp_write_config(dev, 0x24, 0xc4); // PNPCVS
pnp_write_config(dev, 0x29, 0x01); // GPIO settings
pnp_write_config(dev, 0x2a, 0x40); // GPIO settings should be fc but gets set to 02
pnp_write_config(dev, 0x2b, 0xc0); // GPIO settings?
pnp_write_config(dev, 0x2c, 0x03); // GPIO settings?
pnp_write_config(dev, 0x2d, 0x20); // GPIO settings?
dev = PNP_DEV(0x4e, W83627EHG_SP1);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
pnp_set_enable(dev, 1);
dev = PNP_DEV(0x4e, W83627EHG_SP2);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
// pnp_write_config(dev, 0xf1, 4); // IRMODE0
pnp_set_enable(dev, 1);
dev = PNP_DEV(0x4e, W83627EHG_KBC); // Keyboard
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
//pnp_write_config(dev, 0xf0, 0x82);
pnp_set_enable(dev, 1);
dev = PNP_DEV(0x4e, W83627EHG_GPIO2);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 1); // Just enable it
dev = PNP_DEV(0x4e, W83627EHG_GPIO3);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
dev = PNP_DEV(0x4e, W83627EHG_FDC);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
dev = PNP_DEV(0x4e, W83627EHG_PP);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
/* Enable HWM */
dev = PNP_DEV(0x4e, W83627EHG_HWM);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
}
static void rcba_config(void)
{
/* Set up virtual channel 0 */
//RCBA32(0x0014) = 0x80000001;
/* Device 1f interrupt pin register */
RCBA32(D31IP) = 0x00042210;
/* Device 1d interrupt pin register */
RCBA32(D28IP) = 0x00214321;
/* dev irq route register */
RCBA16(D31IR) = 0x0132;
RCBA16(D30IR) = 0x0146;
RCBA16(D29IR) = 0x0237;
RCBA16(D28IR) = 0x3201;
RCBA16(D27IR) = 0x0146;
/* Enable IOAPIC */
RCBA8(OIC) = 0x03;
/* Enable PCIe Root Port Clock Gate */
// RCBA32(0x341c) = 0x00000001;
}
static void early_ich7_init(void)
{
uint8_t reg8;
uint32_t reg32;
// program secondary mlt XXX byte?
pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
// reset rtc power status
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
reg8 &= ~(1 << 2);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
// usb transient disconnect
reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
reg8 |= (3 << 0);
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
reg32 |= (1 << 29) | (1 << 17);
pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
reg32 |= (1 << 31) | (1 << 27);
pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
RCBA32(0x0088) = 0x0011d000;
RCBA16(0x01fc) = 0x060f;
RCBA32(0x01f4) = 0x86000040;
RCBA32(0x0214) = 0x10030549;
RCBA32(0x0218) = 0x00020504;
RCBA8(0x0220) = 0xc5;
reg32 = RCBA32(GCS);
reg32 |= (1 << 6);
RCBA32(GCS) = reg32;
reg32 = RCBA32(0x3430);
reg32 &= ~(3 << 0);
reg32 |= (1 << 0);
RCBA32(0x3430) = reg32;
RCBA16(0x0200) = 0x2008;
RCBA8(0x2027) = 0x0d;
RCBA16(0x3e08) |= (1 << 7);
RCBA16(0x3e48) |= (1 << 7);
RCBA32(0x3e0e) |= (1 << 7);
RCBA32(0x3e4e) |= (1 << 7);
// next step only on ich7m b0 and later:
reg32 = RCBA32(0x2034);
reg32 &= ~(0x0f << 16);
reg32 |= (5 << 16);
RCBA32(0x2034) = reg32;
}
void mainboard_romstage_entry(void)
{
int s3resume = 0;
enable_lapic();
ich7_enable_lpc();
early_superio_config_w83627ehg();
/* Set up the console */
console_init();
if (MCHBAR16(SSKPD) == 0xCAFE) {
printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
system_reset();
}
/* Perform some early chipset initialization required
* before RAM initialization can work
*/
i945_early_initialization();
s3resume = southbridge_detect_s3_resume();
/* Enable SPD ROMs and DDR-II DRAM */
enable_smbus();
if (CONFIG(DEBUG_RAM_SETUP))
dump_spd_registers();
sdram_initialize(s3resume ? 2 : 0, NULL);
/* Perform some initialization that must run before stage2 */
early_ich7_init();
/* This should probably go away. Until now it is required
* and mainboard specific
*/
rcba_config();
/* Chipset Errata! */
fixup_i945_errata();
/* Initialize the internal PCIe links before we go into stage2 */
i945_late_initialization(s3resume);
}
|
