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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
|
/*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
// __PRE_RAM__ means: use "unsigned" for device, not a struct.
/* Configuration of the i945 driver */
#define CHIPSET_I945GM 1
/* Usually system firmware turns off system memory clock signals to
* unused SO-DIMM slots to reduce EMI and power consumption.
* However, the Kontron 986LCD-M does not like unused clock signals to
* be disabled. If other similar mainboard occur, it would make sense
* to make this an entry in the sysinfo structure, and pre-initialize that
* structure in the mainboard's romstage.c main() function. For now a
* #define will do.
*/
#define OVERRIDE_CLOCK_DISABLE 1
#define CHANNEL_XOR_RANDOMIZATION 1
#include <stdint.h>
#include <string.h>
#include <arch/io.h>
#include <arch/romcc_io.h>
#include <device/pci_def.h>
#include <device/pnp_def.h>
#include <cpu/x86/lapic.h>
#include "superio/winbond/w83627thg/w83627thg.h"
#include "option_table.h"
#include "pc80/mc146818rtc_early.c"
#include <console/console.h>
#include <cpu/x86/bist.h>
#if CONFIG_USBDEBUG_DIRECT
#define DBGP_DEFAULT 1
#include <usbdebug.h>
#include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
#include "pc80/usbdebug_serial.c"
#endif
#include "lib/ramtest.c"
#include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
#include "superio/winbond/w83627thg/w83627thg_early_serial.c"
#include "northbridge/intel/i945/udelay.c"
#define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
#include "southbridge/intel/i82801gx/i82801gx.h"
static void setup_ich7_gpios(void)
{
printk(BIOS_DEBUG, " GPIOS...");
/* General Registers */
outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
/* Output Control Registers */
outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
/* Input Control Registers */
outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
}
#include "northbridge/intel/i945/early_init.c"
static inline int spd_read_byte(unsigned device, unsigned address)
{
return smbus_read_byte(device, address);
}
#include "northbridge/intel/i945/raminit.h"
#include "northbridge/intel/i945/raminit.c"
#include "northbridge/intel/i945/errata.c"
#include "northbridge/intel/i945/debug.c"
static void ich7_enable_lpc(void)
{
// Enable Serial IRQ
pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
// Set COM1/COM2 decode range
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
// Enable COM1/COM2/KBD/SuperIO1+2
pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
// Enable HWM at 0xa00
pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
// COM3 decode
pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
// COM4 decode
pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
// io 0x300 decode
pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
}
/* This box has two superios, so enabling serial becomes slightly excessive.
* We disable a lot of stuff to make sure that there are no conflicts between
* the two. Also set up the GPIOs from the beginning. This is the "no schematic
* but safe anyways" method.
*/
static void early_superio_config_w83627thg(void)
{
device_t dev;
dev=PNP_DEV(0x2e, W83627THG_SP1);
pnp_enter_ext_func_mode(dev);
pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
pnp_write_config(dev, 0x29, 0x43); // GPIO settings
pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
dev=PNP_DEV(0x2e, W83627THG_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(0x2e, W83627THG_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(0x2e, W83627THG_KBC);
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(0x2e, W83627THG_GAME_MIDI_GPIO1);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
pnp_set_enable(dev, 1);
dev=PNP_DEV(0x2e, W83627THG_GPIO2);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 1); // Just enable it
dev=PNP_DEV(0x2e, W83627THG_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(0x2e, W83627THG_FDC);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
dev=PNP_DEV(0x2e, W83627THG_PP);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
/* Enable HWM */
dev=PNP_DEV(0x2e, W83627THG_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_ext_func_mode(dev);
dev=PNP_DEV(0x4e, W83627THG_SP1);
pnp_enter_ext_func_mode(dev);
pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
pnp_set_enable(dev, 1);
dev=PNP_DEV(0x4e, W83627THG_SP2);
pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
pnp_set_enable(dev, 1);
dev=PNP_DEV(0x4e, W83627THG_FDC);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
dev=PNP_DEV(0x4e, W83627THG_PP);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
dev=PNP_DEV(0x4e, W83627THG_KBC);
pnp_set_logical_device(dev);
pnp_set_enable(dev, 0);
pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
pnp_exit_ext_func_mode(dev);
}
static void rcba_config(void)
{
u32 reg32;
/* Set up virtual channel 0 */
//RCBA32(0x0014) = 0x80000001;
//RCBA32(0x001c) = 0x03128010;
/* Device 1f interrupt pin register */
RCBA32(0x3100) = 0x00042210;
/* Device 1d interrupt pin register */
RCBA32(0x310c) = 0x00214321;
/* dev irq route register */
RCBA16(0x3140) = 0x0132;
RCBA16(0x3142) = 0x3241;
RCBA16(0x3144) = 0x0237;
RCBA16(0x3146) = 0x3210;
RCBA16(0x3148) = 0x3210;
/* Enable IOAPIC */
RCBA8(0x31ff) = 0x03;
/* Enable upper 128bytes of CMOS */
RCBA32(0x3400) = (1 << 2);
/* Now, this is a bit ugly. As per PCI specification, function 0 of a
* device always has to be implemented. So disabling ethernet port 1
* would essentially disable all three ethernet ports of the mainboard.
* It's possible to rename the ports to achieve compatibility to the
* PCI spec but this will confuse all (static!) tables containing
* interrupt routing information.
* To avoid this, we enable (unused) port 6 and swap it with port 1
* in the case that ethernet port 1 is disabled. Since no devices
* are connected to that port, we don't have to worry about interrupt
* routing.
*/
int port_shuffle = 0;
/* Disable unused devices */
reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
reg32 |= FD_PCIE1;
}
if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
reg32 |= FD_PCIE2;
} else {
if (reg32 & FD_PCIE1)
port_shuffle = 1;
}
if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
reg32 |= FD_PCIE3;
} else {
if (reg32 & FD_PCIE1)
port_shuffle = 1;
}
if (port_shuffle) {
/* Enable PCIE6 again */
reg32 &= ~FD_PCIE6;
/* Swap PCIE6 and PCIE1 */
RCBA32(RPFN) = 0x00043215;
}
reg32 |= 1;
RCBA32(0x3418) = reg32;
/* 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(0x3410);
reg32 |= (1 << 6);
RCBA32(0x3410) = reg32;
reg32 = RCBA32(0x3430);
reg32 &= ~(3 << 0);
reg32 |= (1 << 0);
RCBA32(0x3430) = reg32;
RCBA32(0x3418) |= (1 << 0);
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;
}
#include <cbmem.h>
// Now, this needs to be included because it relies on the symbol
// __PRE_RAM__ being set during CAR stage (in order to compile the
// BSS free versions of the functions). Either rewrite the code
// to be always BSS free, or invent a flag that's better suited than
// __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
//
#include "lib/cbmem.c"
void main(unsigned long bist)
{
u32 reg32;
int boot_mode = 0;
if (bist == 0) {
enable_lapic();
}
ich7_enable_lpc();
/* Force PCIRST# */
pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
udelay(200);
pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
udelay(200);
early_superio_config_w83627thg();
/* Set up the console */
uart_init();
#if CONFIG_USBDEBUG_DIRECT
i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
early_usbdebug_direct_init();
#endif
console_init();
/* Halt if there was a built in self test failure */
report_bist_failure(bist);
if (MCHBAR16(SSKPD) == 0xCAFE) {
printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
outb(0x6, 0xcf9);
while (1) asm("hlt");
}
/* Perform some early chipset initialization required
* before RAM initialization can work
*/
i945_early_initialization();
/* Read PM1_CNT */
reg32 = inl(DEFAULT_PMBASE + 0x04);
printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
if (((reg32 >> 10) & 7) == 5) {
#if CONFIG_HAVE_ACPI_RESUME
printk(BIOS_DEBUG, "Resume from S3 detected.\n");
boot_mode = 2;
/* Clear SLP_TYPE. This will break stage2 but
* we care for that when we get there.
*/
outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
#else
printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
#endif
}
/* Enable SPD ROMs and DDR-II DRAM */
enable_smbus();
#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
dump_spd_registers();
#endif
sdram_initialize(boot_mode);
/* 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();
#if !CONFIG_HAVE_ACPI_RESUME
#if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
#if CONFIG_DEBUG_RAM_SETUP
sdram_dump_mchbar_registers();
#endif
{
/* This will not work if TSEG is in place! */
u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
ram_check(0x00000000, 0x000a0000);
//ram_check(0x00100000, tom);
}
#endif
#endif
quick_ram_check();
MCHBAR16(SSKPD) = 0xCAFE;
#if CONFIG_HAVE_ACPI_RESUME
/* Start address of high memory tables */
unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
/* If there is no high memory area, we didn't boot before, so
* this is not a resume. In that case we just create the cbmem toc.
*/
if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
/* copy 1MB - 64K to high tables ram_base to prevent memory corruption
* through stage 2. We could keep stuff like stack and heap in high tables
* memory completely, but that's a wonderful clean up task for another
* day.
*/
if (resume_backup_memory)
memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
/* Magic for S3 resume */
pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
}
#endif
}
|