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.
26 #include <arch/romcc_io.h>
27 #include <device/pci_def.h>
28 #include <device/pnp_def.h>
29 #include <cpu/x86/lapic.h>
32 #include "superio/winbond/w83627thg/w83627thg.h"
34 #include <pc80/mc146818rtc.h>
35 #include "option_table.h"
37 #include <console/console.h>
38 #include <cpu/x86/bist.h>
40 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
42 void enable_smbus(void);
44 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
46 #include "northbridge/intel/i945/i945.h"
47 #include "northbridge/intel/i945/raminit.h"
48 #include "southbridge/intel/i82801gx/i82801gx.h"
50 void setup_ich7_gpios(void)
52 printk(BIOS_DEBUG, " GPIOS...");
53 /* General Registers */
54 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
55 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
56 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
57 /* Output Control Registers */
58 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
59 /* Input Control Registers */
60 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
61 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
62 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
63 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
66 static void ich7_enable_lpc(void)
69 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
70 // Set COM1/COM2 decode range
71 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
72 // Enable COM1/COM2/KBD/SuperIO1+2
73 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
74 // Enable HWM at 0xa00
75 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
77 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
79 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
81 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
84 /* This box has two superios, so enabling serial becomes slightly excessive.
85 * We disable a lot of stuff to make sure that there are no conflicts between
86 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
87 * but safe anyways" method.
89 static void early_superio_config_w83627thg(void)
93 dev=PNP_DEV(0x2e, W83627THG_SP1);
94 pnp_enter_ext_func_mode(dev);
96 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
98 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
99 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
101 dev=PNP_DEV(0x2e, W83627THG_SP1);
102 pnp_set_logical_device(dev);
103 pnp_set_enable(dev, 0);
104 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
105 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
106 pnp_set_enable(dev, 1);
108 dev=PNP_DEV(0x2e, W83627THG_SP2);
109 pnp_set_logical_device(dev);
110 pnp_set_enable(dev, 0);
111 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
112 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
113 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
114 pnp_set_enable(dev, 1);
116 dev=PNP_DEV(0x2e, W83627THG_KBC);
117 pnp_set_logical_device(dev);
118 pnp_set_enable(dev, 0);
119 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
120 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
121 // pnp_write_config(dev, 0xf0, 0x82);
122 pnp_set_enable(dev, 1);
124 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
125 pnp_set_logical_device(dev);
126 pnp_set_enable(dev, 0);
127 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
128 pnp_set_enable(dev, 1);
130 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
131 pnp_set_logical_device(dev);
132 pnp_set_enable(dev, 1); // Just enable it
134 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
135 pnp_set_logical_device(dev);
136 pnp_set_enable(dev, 0);
137 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
138 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
139 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
141 dev=PNP_DEV(0x2e, W83627THG_FDC);
142 pnp_set_logical_device(dev);
143 pnp_set_enable(dev, 0);
145 dev=PNP_DEV(0x2e, W83627THG_PP);
146 pnp_set_logical_device(dev);
147 pnp_set_enable(dev, 0);
150 dev=PNP_DEV(0x2e, W83627THG_HWM);
151 pnp_set_logical_device(dev);
152 pnp_set_enable(dev, 0);
153 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
154 pnp_set_enable(dev, 1);
156 pnp_exit_ext_func_mode(dev);
158 dev=PNP_DEV(0x4e, W83627THG_SP1);
159 pnp_enter_ext_func_mode(dev);
161 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
162 pnp_set_enable(dev, 0);
163 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
164 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
165 pnp_set_enable(dev, 1);
167 dev=PNP_DEV(0x4e, W83627THG_SP2);
168 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
169 pnp_set_enable(dev, 0);
170 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
171 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
172 pnp_set_enable(dev, 1);
174 dev=PNP_DEV(0x4e, W83627THG_FDC);
175 pnp_set_logical_device(dev);
176 pnp_set_enable(dev, 0);
178 dev=PNP_DEV(0x4e, W83627THG_PP);
179 pnp_set_logical_device(dev);
180 pnp_set_enable(dev, 0);
182 dev=PNP_DEV(0x4e, W83627THG_KBC);
183 pnp_set_logical_device(dev);
184 pnp_set_enable(dev, 0);
185 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
186 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
188 pnp_exit_ext_func_mode(dev);
191 static void rcba_config(void)
195 /* Set up virtual channel 0 */
196 //RCBA32(0x0014) = 0x80000001;
197 //RCBA32(0x001c) = 0x03128010;
199 /* Device 1f interrupt pin register */
200 RCBA32(0x3100) = 0x00042210;
201 /* Device 1d interrupt pin register */
202 RCBA32(0x310c) = 0x00214321;
204 /* dev irq route register */
205 RCBA16(0x3140) = 0x0132;
206 RCBA16(0x3142) = 0x3241;
207 RCBA16(0x3144) = 0x0237;
208 RCBA16(0x3146) = 0x3210;
209 RCBA16(0x3148) = 0x3210;
212 RCBA8(0x31ff) = 0x03;
214 /* Enable upper 128bytes of CMOS */
215 RCBA32(0x3400) = (1 << 2);
217 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
218 * device always has to be implemented. So disabling ethernet port 1
219 * would essentially disable all three ethernet ports of the mainboard.
220 * It's possible to rename the ports to achieve compatibility to the
221 * PCI spec but this will confuse all (static!) tables containing
222 * interrupt routing information.
223 * To avoid this, we enable (unused) port 6 and swap it with port 1
224 * in the case that ethernet port 1 is disabled. Since no devices
225 * are connected to that port, we don't have to worry about interrupt
228 int port_shuffle = 0;
230 /* Disable unused devices */
231 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
232 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
234 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
235 printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
238 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
239 printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
242 if (reg32 & FD_PCIE1)
245 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
246 printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
249 if (reg32 & FD_PCIE1)
254 /* Enable PCIE6 again */
256 /* Swap PCIE6 and PCIE1 */
257 RCBA32(RPFN) = 0x00043215;
262 RCBA32(0x3418) = reg32;
264 /* Enable PCIe Root Port Clock Gate */
265 // RCBA32(0x341c) = 0x00000001;
268 static void early_ich7_init(void)
273 // program secondary mlt XXX byte?
274 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
276 // reset rtc power status
277 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
279 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
281 // usb transient disconnect
282 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
284 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
286 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
287 reg32 |= (1 << 29) | (1 << 17);
288 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
290 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
291 reg32 |= (1 << 31) | (1 << 27);
292 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
294 RCBA32(0x0088) = 0x0011d000;
295 RCBA16(0x01fc) = 0x060f;
296 RCBA32(0x01f4) = 0x86000040;
297 RCBA32(0x0214) = 0x10030549;
298 RCBA32(0x0218) = 0x00020504;
299 RCBA8(0x0220) = 0xc5;
300 reg32 = RCBA32(0x3410);
302 RCBA32(0x3410) = reg32;
303 reg32 = RCBA32(0x3430);
306 RCBA32(0x3430) = reg32;
307 RCBA32(0x3418) |= (1 << 0);
308 RCBA16(0x0200) = 0x2008;
309 RCBA8(0x2027) = 0x0d;
310 RCBA16(0x3e08) |= (1 << 7);
311 RCBA16(0x3e48) |= (1 << 7);
312 RCBA32(0x3e0e) |= (1 << 7);
313 RCBA32(0x3e4e) |= (1 << 7);
315 // next step only on ich7m b0 and later:
316 reg32 = RCBA32(0x2034);
317 reg32 &= ~(0x0f << 16);
319 RCBA32(0x2034) = reg32;
324 // Now, this needs to be included because it relies on the symbol
325 // __PRE_RAM__ being set during CAR stage (in order to compile the
326 // BSS free versions of the functions). Either rewrite the code
327 // to be always BSS free, or invent a flag that's better suited than
328 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
330 #include "lib/cbmem.c"
332 void main(unsigned long bist)
342 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
344 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
347 early_superio_config_w83627thg();
349 /* Set up the console */
353 i82801gx_enable_usbdebug(1);
354 early_usbdebug_init();
359 /* Halt if there was a built in self test failure */
360 report_bist_failure(bist);
362 if (MCHBAR16(SSKPD) == 0xCAFE) {
363 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
365 while (1) asm("hlt");
368 /* Perform some early chipset initialization required
369 * before RAM initialization can work
371 i945_early_initialization();
374 reg32 = inl(DEFAULT_PMBASE + 0x04);
375 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
376 if (((reg32 >> 10) & 7) == 5) {
377 #if CONFIG_HAVE_ACPI_RESUME
378 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
380 /* Clear SLP_TYPE. This will break stage2 but
381 * we care for that when we get there.
383 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
386 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
390 /* Enable SPD ROMs and DDR-II DRAM */
393 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
394 dump_spd_registers();
397 sdram_initialize(boot_mode);
399 /* Perform some initialization that must run before stage2 */
402 /* This should probably go away. Until now it is required
403 * and mainboard specific
407 /* Chipset Errata! */
410 /* Initialize the internal PCIe links before we go into stage2 */
411 i945_late_initialization();
413 #if !CONFIG_HAVE_ACPI_RESUME
414 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
415 #if CONFIG_DEBUG_RAM_SETUP
416 sdram_dump_mchbar_registers();
420 /* This will not work if TSEG is in place! */
421 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
423 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
424 ram_check(0x00000000, 0x000a0000);
425 //ram_check(0x00100000, tom);
432 MCHBAR16(SSKPD) = 0xCAFE;
434 #if CONFIG_HAVE_ACPI_RESUME
435 /* Start address of high memory tables */
436 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
438 /* If there is no high memory area, we didn't boot before, so
439 * this is not a resume. In that case we just create the cbmem toc.
441 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
442 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
444 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
445 * through stage 2. We could keep stuff like stack and heap in high tables
446 * memory completely, but that's a wonderful clean up task for another
449 if (resume_backup_memory)
450 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
452 /* Magic for S3 resume */
453 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);