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.
22 /* Configuration of the i945 driver */
23 #define CHIPSET_I945GM 1
24 /* Usually system firmware turns off system memory clock signals to
25 * unused SO-DIMM slots to reduce EMI and power consumption.
26 * However, the Kontron 986LCD-M does not like unused clock signals to
27 * be disabled. If other similar mainboard occur, it would make sense
28 * to make this an entry in the sysinfo structure, and pre-initialize that
29 * structure in the mainboard's romstage.c main() function. For now a
32 #define OVERRIDE_CLOCK_DISABLE 1
33 #define CHANNEL_XOR_RANDOMIZATION 1
38 #include <arch/romcc_io.h>
39 #include <device/pci_def.h>
40 #include <device/pnp_def.h>
41 #include <cpu/x86/lapic.h>
43 #include "superio/winbond/w83627thg/w83627thg.h"
45 #include <pc80/mc146818rtc.h>
46 #include "option_table.h"
48 #include <console/console.h>
49 #include <cpu/x86/bist.h>
52 #define DBGP_DEFAULT 1
54 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
55 #include "pc80/usbdebug_serial.c"
58 #include "lib/ramtest.c"
59 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
60 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
62 #include "northbridge/intel/i945/udelay.c"
64 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
66 #include "southbridge/intel/i82801gx/i82801gx.h"
67 static void setup_ich7_gpios(void)
69 printk(BIOS_DEBUG, " GPIOS...");
70 /* General Registers */
71 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
72 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
73 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
74 /* Output Control Registers */
75 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
76 /* Input Control Registers */
77 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
78 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
79 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
80 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
83 #include "northbridge/intel/i945/early_init.c"
85 static inline int spd_read_byte(unsigned device, unsigned address)
87 return smbus_read_byte(device, address);
90 #include "northbridge/intel/i945/raminit.h"
91 #include "northbridge/intel/i945/raminit.c"
92 #include "northbridge/intel/i945/errata.c"
93 #include "northbridge/intel/i945/debug.c"
95 static void ich7_enable_lpc(void)
98 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
99 // Set COM1/COM2 decode range
100 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
101 // Enable COM1/COM2/KBD/SuperIO1+2
102 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
103 // Enable HWM at 0xa00
104 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
106 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
108 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
110 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
113 /* This box has two superios, so enabling serial becomes slightly excessive.
114 * We disable a lot of stuff to make sure that there are no conflicts between
115 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
116 * but safe anyways" method.
118 static void early_superio_config_w83627thg(void)
122 dev=PNP_DEV(0x2e, W83627THG_SP1);
123 pnp_enter_ext_func_mode(dev);
125 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
127 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
128 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
130 dev=PNP_DEV(0x2e, W83627THG_SP1);
131 pnp_set_logical_device(dev);
132 pnp_set_enable(dev, 0);
133 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
134 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
135 pnp_set_enable(dev, 1);
137 dev=PNP_DEV(0x2e, W83627THG_SP2);
138 pnp_set_logical_device(dev);
139 pnp_set_enable(dev, 0);
140 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
141 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
142 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
143 pnp_set_enable(dev, 1);
145 dev=PNP_DEV(0x2e, W83627THG_KBC);
146 pnp_set_logical_device(dev);
147 pnp_set_enable(dev, 0);
148 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
149 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
150 // pnp_write_config(dev, 0xf0, 0x82);
151 pnp_set_enable(dev, 1);
153 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
154 pnp_set_logical_device(dev);
155 pnp_set_enable(dev, 0);
156 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
157 pnp_set_enable(dev, 1);
159 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
160 pnp_set_logical_device(dev);
161 pnp_set_enable(dev, 1); // Just enable it
163 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
164 pnp_set_logical_device(dev);
165 pnp_set_enable(dev, 0);
166 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
167 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
168 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
170 dev=PNP_DEV(0x2e, W83627THG_FDC);
171 pnp_set_logical_device(dev);
172 pnp_set_enable(dev, 0);
174 dev=PNP_DEV(0x2e, W83627THG_PP);
175 pnp_set_logical_device(dev);
176 pnp_set_enable(dev, 0);
179 dev=PNP_DEV(0x2e, W83627THG_HWM);
180 pnp_set_logical_device(dev);
181 pnp_set_enable(dev, 0);
182 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
183 pnp_set_enable(dev, 1);
185 pnp_exit_ext_func_mode(dev);
187 dev=PNP_DEV(0x4e, W83627THG_SP1);
188 pnp_enter_ext_func_mode(dev);
190 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
191 pnp_set_enable(dev, 0);
192 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
193 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
194 pnp_set_enable(dev, 1);
196 dev=PNP_DEV(0x4e, W83627THG_SP2);
197 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
198 pnp_set_enable(dev, 0);
199 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
200 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
201 pnp_set_enable(dev, 1);
203 dev=PNP_DEV(0x4e, W83627THG_FDC);
204 pnp_set_logical_device(dev);
205 pnp_set_enable(dev, 0);
207 dev=PNP_DEV(0x4e, W83627THG_PP);
208 pnp_set_logical_device(dev);
209 pnp_set_enable(dev, 0);
211 dev=PNP_DEV(0x4e, W83627THG_KBC);
212 pnp_set_logical_device(dev);
213 pnp_set_enable(dev, 0);
214 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
215 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
217 pnp_exit_ext_func_mode(dev);
220 static void rcba_config(void)
224 /* Set up virtual channel 0 */
225 //RCBA32(0x0014) = 0x80000001;
226 //RCBA32(0x001c) = 0x03128010;
228 /* Device 1f interrupt pin register */
229 RCBA32(0x3100) = 0x00042210;
230 /* Device 1d interrupt pin register */
231 RCBA32(0x310c) = 0x00214321;
233 /* dev irq route register */
234 RCBA16(0x3140) = 0x0132;
235 RCBA16(0x3142) = 0x3241;
236 RCBA16(0x3144) = 0x0237;
237 RCBA16(0x3146) = 0x3210;
238 RCBA16(0x3148) = 0x3210;
241 RCBA8(0x31ff) = 0x03;
243 /* Enable upper 128bytes of CMOS */
244 RCBA32(0x3400) = (1 << 2);
246 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
247 * device always has to be implemented. So disabling ethernet port 1
248 * would essentially disable all three ethernet ports of the mainboard.
249 * It's possible to rename the ports to achieve compatibility to the
250 * PCI spec but this will confuse all (static!) tables containing
251 * interrupt routing information.
252 * To avoid this, we enable (unused) port 6 and swap it with port 1
253 * in the case that ethernet port 1 is disabled. Since no devices
254 * are connected to that port, we don't have to worry about interrupt
257 int port_shuffle = 0;
259 /* Disable unused devices */
260 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
261 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
263 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
264 printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
267 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
268 printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
271 if (reg32 & FD_PCIE1)
274 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
275 printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
278 if (reg32 & FD_PCIE1)
283 /* Enable PCIE6 again */
285 /* Swap PCIE6 and PCIE1 */
286 RCBA32(RPFN) = 0x00043215;
291 RCBA32(0x3418) = reg32;
293 /* Enable PCIe Root Port Clock Gate */
294 // RCBA32(0x341c) = 0x00000001;
297 static void early_ich7_init(void)
302 // program secondary mlt XXX byte?
303 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
305 // reset rtc power status
306 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
308 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
310 // usb transient disconnect
311 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
313 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
315 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
316 reg32 |= (1 << 29) | (1 << 17);
317 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
319 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
320 reg32 |= (1 << 31) | (1 << 27);
321 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
323 RCBA32(0x0088) = 0x0011d000;
324 RCBA16(0x01fc) = 0x060f;
325 RCBA32(0x01f4) = 0x86000040;
326 RCBA32(0x0214) = 0x10030549;
327 RCBA32(0x0218) = 0x00020504;
328 RCBA8(0x0220) = 0xc5;
329 reg32 = RCBA32(0x3410);
331 RCBA32(0x3410) = reg32;
332 reg32 = RCBA32(0x3430);
335 RCBA32(0x3430) = reg32;
336 RCBA32(0x3418) |= (1 << 0);
337 RCBA16(0x0200) = 0x2008;
338 RCBA8(0x2027) = 0x0d;
339 RCBA16(0x3e08) |= (1 << 7);
340 RCBA16(0x3e48) |= (1 << 7);
341 RCBA32(0x3e0e) |= (1 << 7);
342 RCBA32(0x3e4e) |= (1 << 7);
344 // next step only on ich7m b0 and later:
345 reg32 = RCBA32(0x2034);
346 reg32 &= ~(0x0f << 16);
348 RCBA32(0x2034) = reg32;
353 // Now, this needs to be included because it relies on the symbol
354 // __PRE_RAM__ being set during CAR stage (in order to compile the
355 // BSS free versions of the functions). Either rewrite the code
356 // to be always BSS free, or invent a flag that's better suited than
357 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
359 #include "lib/cbmem.c"
361 void main(unsigned long bist)
371 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
373 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
376 early_superio_config_w83627thg();
378 /* Set up the console */
382 i82801gx_enable_usbdebug(DBGP_DEFAULT);
383 early_usbdebug_init();
388 /* Halt if there was a built in self test failure */
389 report_bist_failure(bist);
391 if (MCHBAR16(SSKPD) == 0xCAFE) {
392 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
394 while (1) asm("hlt");
397 /* Perform some early chipset initialization required
398 * before RAM initialization can work
400 i945_early_initialization();
403 reg32 = inl(DEFAULT_PMBASE + 0x04);
404 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
405 if (((reg32 >> 10) & 7) == 5) {
406 #if CONFIG_HAVE_ACPI_RESUME
407 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
409 /* Clear SLP_TYPE. This will break stage2 but
410 * we care for that when we get there.
412 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
415 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
419 /* Enable SPD ROMs and DDR-II DRAM */
422 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
423 dump_spd_registers();
426 sdram_initialize(boot_mode);
428 /* Perform some initialization that must run before stage2 */
431 /* This should probably go away. Until now it is required
432 * and mainboard specific
436 /* Chipset Errata! */
439 /* Initialize the internal PCIe links before we go into stage2 */
440 i945_late_initialization();
442 #if !CONFIG_HAVE_ACPI_RESUME
443 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
444 #if CONFIG_DEBUG_RAM_SETUP
445 sdram_dump_mchbar_registers();
449 /* This will not work if TSEG is in place! */
450 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
452 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
453 ram_check(0x00000000, 0x000a0000);
454 //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);