2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2010 coresystems GmbH
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 // __PRE_RAM__ means: use "unsigned" for device, not a struct.
23 /* Configuration of the i945 driver */
24 #define CHIPSET_I945GM 1
25 /* Usually system firmware turns off system memory clock signals to
26 * unused SO-DIMM slots to reduce EMI and power consumption.
27 * However, the Kontron 986LCD-M does not like unused clock signals to
28 * be disabled. If other similar mainboard occur, it would make sense
29 * to make this an entry in the sysinfo structure, and pre-initialize that
30 * structure in the mainboard's romstage.c main() function. For now a
33 #define OVERRIDE_CLOCK_DISABLE 1
34 #define CHANNEL_XOR_RANDOMIZATION 1
39 #include <arch/romcc_io.h>
40 #include <device/pci_def.h>
41 #include <device/pnp_def.h>
42 #include <cpu/x86/lapic.h>
44 #include "superio/winbond/w83627thg/w83627thg.h"
46 #include "option_table.h"
47 #include "pc80/mc146818rtc_early.c"
49 #include <console/console.h>
50 #include "pc80/serial.c"
51 #include "arch/i386/lib/console.c"
52 #include <cpu/x86/bist.h>
54 #if CONFIG_USBDEBUG_DIRECT
55 #define DBGP_DEFAULT 1
56 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
57 #include "pc80/usbdebug_direct_serial.c"
60 #include "lib/ramtest.c"
61 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
62 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
64 #include "northbridge/intel/i945/udelay.c"
66 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
68 #include "southbridge/intel/i82801gx/i82801gx.h"
69 static void setup_ich7_gpios(void)
71 printk_debug(" GPIOS...");
72 /* General Registers */
73 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
74 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
75 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
76 /* Output Control Registers */
77 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
78 /* Input Control Registers */
79 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
80 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
81 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
82 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
85 #include "northbridge/intel/i945/early_init.c"
87 static inline int spd_read_byte(unsigned device, unsigned address)
89 return smbus_read_byte(device, address);
92 #include "northbridge/intel/i945/raminit.h"
93 #include "northbridge/intel/i945/raminit.c"
94 #include "northbridge/intel/i945/reset_test.c"
95 #include "northbridge/intel/i945/errata.c"
96 #include "northbridge/intel/i945/debug.c"
98 static void ich7_enable_lpc(void)
101 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
102 // Set COM1/COM2 decode range
103 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
104 // Enable COM1/COM2/KBD/SuperIO1+2
105 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
106 // Enable HWM at 0xa00
107 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
109 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
111 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
113 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
117 /* This box has two superios, so enabling serial becomes slightly excessive.
118 * We disable a lot of stuff to make sure that there are no conflicts between
119 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
120 * but safe anyways" method.
122 static void early_superio_config_w83627thg(void)
126 dev=PNP_DEV(0x2e, W83627THG_SP1);
127 pnp_enter_ext_func_mode(dev);
129 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
131 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
132 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
134 dev=PNP_DEV(0x2e, W83627THG_SP1);
135 pnp_set_logical_device(dev);
136 pnp_set_enable(dev, 0);
137 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
138 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
139 pnp_set_enable(dev, 1);
141 dev=PNP_DEV(0x2e, W83627THG_SP2);
142 pnp_set_logical_device(dev);
143 pnp_set_enable(dev, 0);
144 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
145 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
146 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
147 pnp_set_enable(dev, 1);
149 dev=PNP_DEV(0x2e, W83627THG_KBC);
150 pnp_set_logical_device(dev);
151 pnp_set_enable(dev, 0);
152 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
153 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
154 // pnp_write_config(dev, 0xf0, 0x82);
155 pnp_set_enable(dev, 1);
157 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
158 pnp_set_logical_device(dev);
159 pnp_set_enable(dev, 0);
160 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
161 pnp_set_enable(dev, 1);
163 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
164 pnp_set_logical_device(dev);
165 pnp_set_enable(dev, 1); // Just enable it
167 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
168 pnp_set_logical_device(dev);
169 pnp_set_enable(dev, 0);
170 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
171 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
172 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
174 dev=PNP_DEV(0x2e, W83627THG_FDC);
175 pnp_set_logical_device(dev);
176 pnp_set_enable(dev, 0);
178 dev=PNP_DEV(0x2e, W83627THG_PP);
179 pnp_set_logical_device(dev);
180 pnp_set_enable(dev, 0);
183 dev=PNP_DEV(0x2e, W83627THG_HWM);
184 pnp_set_logical_device(dev);
185 pnp_set_enable(dev, 0);
186 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
187 pnp_set_enable(dev, 1);
189 pnp_exit_ext_func_mode(dev);
191 dev=PNP_DEV(0x4e, W83627THG_SP1);
192 pnp_enter_ext_func_mode(dev);
194 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
195 pnp_set_enable(dev, 0);
196 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
197 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
198 pnp_set_enable(dev, 1);
200 dev=PNP_DEV(0x4e, W83627THG_SP2);
201 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
202 pnp_set_enable(dev, 0);
203 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
204 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
205 pnp_set_enable(dev, 1);
207 dev=PNP_DEV(0x4e, W83627THG_FDC);
208 pnp_set_logical_device(dev);
209 pnp_set_enable(dev, 0);
211 dev=PNP_DEV(0x4e, W83627THG_PP);
212 pnp_set_logical_device(dev);
213 pnp_set_enable(dev, 0);
215 dev=PNP_DEV(0x4e, W83627THG_KBC);
216 pnp_set_logical_device(dev);
217 pnp_set_enable(dev, 0);
218 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
219 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
221 pnp_exit_ext_func_mode(dev);
224 static void rcba_config(void)
228 /* Set up virtual channel 0 */
229 //RCBA32(0x0014) = 0x80000001;
230 //RCBA32(0x001c) = 0x03128010;
232 /* Device 1f interrupt pin register */
233 RCBA32(0x3100) = 0x00042210;
234 /* Device 1d interrupt pin register */
235 RCBA32(0x310c) = 0x00214321;
237 /* dev irq route register */
238 RCBA16(0x3140) = 0x0132;
239 RCBA16(0x3142) = 0x3241;
240 RCBA16(0x3144) = 0x0237;
241 RCBA16(0x3146) = 0x3210;
242 RCBA16(0x3148) = 0x3210;
245 RCBA8(0x31ff) = 0x03;
247 /* Enable upper 128bytes of CMOS */
248 RCBA32(0x3400) = (1 << 2);
250 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
251 * device always has to be implemented. So disabling ethernet port 1
252 * would essentially disable all three ethernet ports of the mainboard.
253 * It's possible to rename the ports to achieve compatibility to the
254 * PCI spec but this will confuse all (static!) tables containing
255 * interrupt routing information.
256 * To avoid this, we enable (unused) port 6 and swap it with port 1
257 * in the case that ethernet port 1 is disabled. Since no devices
258 * are connected to that port, we don't have to worry about interrupt
261 int port_shuffle = 0;
263 /* Disable unused devices */
264 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
265 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
267 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
268 printk_debug("Disabling ethernet adapter 1.\n");
271 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
272 printk_debug("Disabling ethernet adapter 2.\n");
275 if (reg32 & FD_PCIE1)
278 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
279 printk_debug("Disabling ethernet adapter 3.\n");
282 if (reg32 & FD_PCIE1)
287 /* Enable PCIE6 again */
289 /* Swap PCIE6 and PCIE1 */
290 RCBA32(RPFN) = 0x00043215;
295 RCBA32(0x3418) = reg32;
297 /* Enable PCIe Root Port Clock Gate */
298 // RCBA32(0x341c) = 0x00000001;
301 static void early_ich7_init(void)
306 // program secondary mlt XXX byte?
307 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
309 // reset rtc power status
310 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
312 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
314 // usb transient disconnect
315 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
317 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
319 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
320 reg32 |= (1 << 29) | (1 << 17);
321 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
323 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
324 reg32 |= (1 << 31) | (1 << 27);
325 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
327 RCBA32(0x0088) = 0x0011d000;
328 RCBA16(0x01fc) = 0x060f;
329 RCBA32(0x01f4) = 0x86000040;
330 RCBA32(0x0214) = 0x10030549;
331 RCBA32(0x0218) = 0x00020504;
332 RCBA8(0x0220) = 0xc5;
333 reg32 = RCBA32(0x3410);
335 RCBA32(0x3410) = reg32;
336 reg32 = RCBA32(0x3430);
339 RCBA32(0x3430) = reg32;
340 RCBA32(0x3418) |= (1 << 0);
341 RCBA16(0x0200) = 0x2008;
342 RCBA8(0x2027) = 0x0d;
343 RCBA16(0x3e08) |= (1 << 7);
344 RCBA16(0x3e48) |= (1 << 7);
345 RCBA32(0x3e0e) |= (1 << 7);
346 RCBA32(0x3e4e) |= (1 << 7);
348 // next step only on ich7m b0 and later:
349 reg32 = RCBA32(0x2034);
350 reg32 &= ~(0x0f << 16);
352 RCBA32(0x2034) = reg32;
355 #include "southbridge/intel/i82801gx/cmos_failover.c"
359 // Now, this needs to be included because it relies on the symbol
360 // __PRE_RAM__ being set during CAR stage (in order to compile the
361 // BSS free versions of the functions). Either rewrite the code
362 // to be always BSS free, or invent a flag that's better suited than
363 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
365 #include "lib/cbmem.c"
367 #include "cpu/intel/model_6ex/cache_as_ram_disable.c"
369 void real_main(unsigned long bist)
379 early_superio_config_w83627thg();
381 /* Set up the console */
384 #if CONFIG_USBDEBUG_DIRECT
385 i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
386 early_usbdebug_direct_init();
391 /* Halt if there was a built in self test failure */
392 report_bist_failure(bist);
394 if (MCHBAR16(SSKPD) == 0xCAFE) {
395 printk_debug("soft reset detected.\n");
399 /* Perform some early chipset initialization required
400 * before RAM initialization can work
402 i945_early_initialization();
405 reg32 = inl(DEFAULT_PMBASE + 0x04);
406 printk_debug("PM1_CNT: %08x\n", reg32);
407 if (((reg32 >> 10) & 7) == 5) {
408 #if CONFIG_HAVE_ACPI_RESUME
409 printk_debug("Resume from S3 detected.\n");
411 /* Clear SLP_TYPE. This will break stage2 but
412 * we care for that when we get there.
414 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
417 printk_debug("Resume from S3 detected, but disabled.\n");
421 /* Enable SPD ROMs and DDR-II DRAM */
424 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
425 dump_spd_registers();
428 sdram_initialize(boot_mode);
430 /* Perform some initialization that must run before stage2 */
433 /* This should probably go away. Until now it is required
434 * and mainboard specific
438 /* Chipset Errata! */
441 /* Initialize the internal PCIe links before we go into stage2 */
442 i945_late_initialization();
444 #if !CONFIG_HAVE_ACPI_RESUME
445 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
446 #if CONFIG_DEBUG_RAM_SETUP
447 sdram_dump_mchbar_registers();
451 /* This will not work if TSEG is in place! */
452 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
454 printk_debug("TOM: 0x%08x\n", tom);
455 ram_check(0x00000000, 0x000a0000);
456 //ram_check(0x00100000, tom);
461 MCHBAR16(SSKPD) = 0xCAFE;
463 #if CONFIG_HAVE_ACPI_RESUME
464 /* Start address of high memory tables */
465 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
467 /* If there is no high memory area, we didn't boot before, so
468 * this is not a resume. In that case we just create the cbmem toc.
470 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
471 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
473 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
474 * through stage 2. We could keep stuff like stack and heap in high tables
475 * memory completely, but that's a wonderful clean up task for another
478 if (resume_backup_memory)
479 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
481 /* Magic for S3 resume */
482 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);