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 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
53 #include "pc80/usbdebug_serial.c"
56 #include "lib/ramtest.c"
57 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
58 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
60 #include "northbridge/intel/i945/udelay.c"
62 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
64 #include "southbridge/intel/i82801gx/i82801gx.h"
65 static void setup_ich7_gpios(void)
67 printk(BIOS_DEBUG, " GPIOS...");
68 /* General Registers */
69 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
70 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
71 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
72 /* Output Control Registers */
73 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
74 /* Input Control Registers */
75 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
76 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
77 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
78 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
81 #include "northbridge/intel/i945/early_init.c"
83 static inline int spd_read_byte(unsigned device, unsigned address)
85 return smbus_read_byte(device, address);
88 #include "northbridge/intel/i945/raminit.h"
89 #include "northbridge/intel/i945/raminit.c"
90 #include "northbridge/intel/i945/errata.c"
91 #include "northbridge/intel/i945/debug.c"
93 static void ich7_enable_lpc(void)
96 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
97 // Set COM1/COM2 decode range
98 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
99 // Enable COM1/COM2/KBD/SuperIO1+2
100 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
101 // Enable HWM at 0xa00
102 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
104 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
106 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
108 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
111 /* This box has two superios, so enabling serial becomes slightly excessive.
112 * We disable a lot of stuff to make sure that there are no conflicts between
113 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
114 * but safe anyways" method.
116 static void early_superio_config_w83627thg(void)
120 dev=PNP_DEV(0x2e, W83627THG_SP1);
121 pnp_enter_ext_func_mode(dev);
123 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
125 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
126 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
128 dev=PNP_DEV(0x2e, W83627THG_SP1);
129 pnp_set_logical_device(dev);
130 pnp_set_enable(dev, 0);
131 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
132 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
133 pnp_set_enable(dev, 1);
135 dev=PNP_DEV(0x2e, W83627THG_SP2);
136 pnp_set_logical_device(dev);
137 pnp_set_enable(dev, 0);
138 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
139 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
140 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
141 pnp_set_enable(dev, 1);
143 dev=PNP_DEV(0x2e, W83627THG_KBC);
144 pnp_set_logical_device(dev);
145 pnp_set_enable(dev, 0);
146 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
147 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
148 // pnp_write_config(dev, 0xf0, 0x82);
149 pnp_set_enable(dev, 1);
151 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
152 pnp_set_logical_device(dev);
153 pnp_set_enable(dev, 0);
154 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
155 pnp_set_enable(dev, 1);
157 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
158 pnp_set_logical_device(dev);
159 pnp_set_enable(dev, 1); // Just enable it
161 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
162 pnp_set_logical_device(dev);
163 pnp_set_enable(dev, 0);
164 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
165 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
166 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
168 dev=PNP_DEV(0x2e, W83627THG_FDC);
169 pnp_set_logical_device(dev);
170 pnp_set_enable(dev, 0);
172 dev=PNP_DEV(0x2e, W83627THG_PP);
173 pnp_set_logical_device(dev);
174 pnp_set_enable(dev, 0);
177 dev=PNP_DEV(0x2e, W83627THG_HWM);
178 pnp_set_logical_device(dev);
179 pnp_set_enable(dev, 0);
180 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
181 pnp_set_enable(dev, 1);
183 pnp_exit_ext_func_mode(dev);
185 dev=PNP_DEV(0x4e, W83627THG_SP1);
186 pnp_enter_ext_func_mode(dev);
188 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
189 pnp_set_enable(dev, 0);
190 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
191 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
192 pnp_set_enable(dev, 1);
194 dev=PNP_DEV(0x4e, W83627THG_SP2);
195 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
196 pnp_set_enable(dev, 0);
197 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
198 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
199 pnp_set_enable(dev, 1);
201 dev=PNP_DEV(0x4e, W83627THG_FDC);
202 pnp_set_logical_device(dev);
203 pnp_set_enable(dev, 0);
205 dev=PNP_DEV(0x4e, W83627THG_PP);
206 pnp_set_logical_device(dev);
207 pnp_set_enable(dev, 0);
209 dev=PNP_DEV(0x4e, W83627THG_KBC);
210 pnp_set_logical_device(dev);
211 pnp_set_enable(dev, 0);
212 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
213 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
215 pnp_exit_ext_func_mode(dev);
218 static void rcba_config(void)
222 /* Set up virtual channel 0 */
223 //RCBA32(0x0014) = 0x80000001;
224 //RCBA32(0x001c) = 0x03128010;
226 /* Device 1f interrupt pin register */
227 RCBA32(0x3100) = 0x00042210;
228 /* Device 1d interrupt pin register */
229 RCBA32(0x310c) = 0x00214321;
231 /* dev irq route register */
232 RCBA16(0x3140) = 0x0132;
233 RCBA16(0x3142) = 0x3241;
234 RCBA16(0x3144) = 0x0237;
235 RCBA16(0x3146) = 0x3210;
236 RCBA16(0x3148) = 0x3210;
239 RCBA8(0x31ff) = 0x03;
241 /* Enable upper 128bytes of CMOS */
242 RCBA32(0x3400) = (1 << 2);
244 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
245 * device always has to be implemented. So disabling ethernet port 1
246 * would essentially disable all three ethernet ports of the mainboard.
247 * It's possible to rename the ports to achieve compatibility to the
248 * PCI spec but this will confuse all (static!) tables containing
249 * interrupt routing information.
250 * To avoid this, we enable (unused) port 6 and swap it with port 1
251 * in the case that ethernet port 1 is disabled. Since no devices
252 * are connected to that port, we don't have to worry about interrupt
255 int port_shuffle = 0;
257 /* Disable unused devices */
258 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
259 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
261 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
262 printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
265 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
266 printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
269 if (reg32 & FD_PCIE1)
272 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
273 printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
276 if (reg32 & FD_PCIE1)
281 /* Enable PCIE6 again */
283 /* Swap PCIE6 and PCIE1 */
284 RCBA32(RPFN) = 0x00043215;
289 RCBA32(0x3418) = reg32;
291 /* Enable PCIe Root Port Clock Gate */
292 // RCBA32(0x341c) = 0x00000001;
295 static void early_ich7_init(void)
300 // program secondary mlt XXX byte?
301 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
303 // reset rtc power status
304 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
306 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
308 // usb transient disconnect
309 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
311 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
313 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
314 reg32 |= (1 << 29) | (1 << 17);
315 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
317 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
318 reg32 |= (1 << 31) | (1 << 27);
319 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
321 RCBA32(0x0088) = 0x0011d000;
322 RCBA16(0x01fc) = 0x060f;
323 RCBA32(0x01f4) = 0x86000040;
324 RCBA32(0x0214) = 0x10030549;
325 RCBA32(0x0218) = 0x00020504;
326 RCBA8(0x0220) = 0xc5;
327 reg32 = RCBA32(0x3410);
329 RCBA32(0x3410) = reg32;
330 reg32 = RCBA32(0x3430);
333 RCBA32(0x3430) = reg32;
334 RCBA32(0x3418) |= (1 << 0);
335 RCBA16(0x0200) = 0x2008;
336 RCBA8(0x2027) = 0x0d;
337 RCBA16(0x3e08) |= (1 << 7);
338 RCBA16(0x3e48) |= (1 << 7);
339 RCBA32(0x3e0e) |= (1 << 7);
340 RCBA32(0x3e4e) |= (1 << 7);
342 // next step only on ich7m b0 and later:
343 reg32 = RCBA32(0x2034);
344 reg32 &= ~(0x0f << 16);
346 RCBA32(0x2034) = reg32;
351 // Now, this needs to be included because it relies on the symbol
352 // __PRE_RAM__ being set during CAR stage (in order to compile the
353 // BSS free versions of the functions). Either rewrite the code
354 // to be always BSS free, or invent a flag that's better suited than
355 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
357 #include "lib/cbmem.c"
359 void main(unsigned long bist)
369 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
371 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
374 early_superio_config_w83627thg();
376 /* Set up the console */
380 i82801gx_enable_usbdebug(1);
381 early_usbdebug_init();
386 /* Halt if there was a built in self test failure */
387 report_bist_failure(bist);
389 if (MCHBAR16(SSKPD) == 0xCAFE) {
390 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
392 while (1) asm("hlt");
395 /* Perform some early chipset initialization required
396 * before RAM initialization can work
398 i945_early_initialization();
401 reg32 = inl(DEFAULT_PMBASE + 0x04);
402 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
403 if (((reg32 >> 10) & 7) == 5) {
404 #if CONFIG_HAVE_ACPI_RESUME
405 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
407 /* Clear SLP_TYPE. This will break stage2 but
408 * we care for that when we get there.
410 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
413 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
417 /* Enable SPD ROMs and DDR-II DRAM */
420 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
421 dump_spd_registers();
424 sdram_initialize(boot_mode);
426 /* Perform some initialization that must run before stage2 */
429 /* This should probably go away. Until now it is required
430 * and mainboard specific
434 /* Chipset Errata! */
437 /* Initialize the internal PCIe links before we go into stage2 */
438 i945_late_initialization();
440 #if !CONFIG_HAVE_ACPI_RESUME
441 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
442 #if CONFIG_DEBUG_RAM_SETUP
443 sdram_dump_mchbar_registers();
447 /* This will not work if TSEG is in place! */
448 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
450 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
451 ram_check(0x00000000, 0x000a0000);
452 //ram_check(0x00100000, tom);
459 MCHBAR16(SSKPD) = 0xCAFE;
461 #if CONFIG_HAVE_ACPI_RESUME
462 /* Start address of high memory tables */
463 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
465 /* If there is no high memory area, we didn't boot before, so
466 * this is not a resume. In that case we just create the cbmem toc.
468 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
469 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
471 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
472 * through stage 2. We could keep stuff like stack and heap in high tables
473 * memory completely, but that's a wonderful clean up task for another
476 if (resume_backup_memory)
477 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
479 /* Magic for S3 resume */
480 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);