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>
31 #include "superio/winbond/w83627thg/w83627thg.h"
33 #include <pc80/mc146818rtc.h>
34 #include "option_table.h"
36 #include <console/console.h>
37 #include <cpu/x86/bist.h>
39 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
41 void enable_smbus(void);
43 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
45 #include "northbridge/intel/i945/i945.h"
46 #include "northbridge/intel/i945/raminit.h"
47 #include "southbridge/intel/i82801gx/i82801gx.h"
49 void setup_ich7_gpios(void)
51 printk(BIOS_DEBUG, " GPIOS...");
52 /* General Registers */
53 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
54 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
55 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
56 /* Output Control Registers */
57 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
58 /* Input Control Registers */
59 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
60 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
61 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
62 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
65 static void ich7_enable_lpc(void)
68 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
69 // Set COM1/COM2 decode range
70 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
71 // Enable COM1/COM2/KBD/SuperIO1+2
72 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
73 // Enable HWM at 0xa00
74 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
76 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
78 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
80 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
83 /* This box has two superios, so enabling serial becomes slightly excessive.
84 * We disable a lot of stuff to make sure that there are no conflicts between
85 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
86 * but safe anyways" method.
88 static void early_superio_config_w83627thg(void)
92 dev=PNP_DEV(0x2e, W83627THG_SP1);
93 pnp_enter_ext_func_mode(dev);
95 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
97 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
98 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
100 dev=PNP_DEV(0x2e, W83627THG_SP1);
101 pnp_set_logical_device(dev);
102 pnp_set_enable(dev, 0);
103 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
104 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
105 pnp_set_enable(dev, 1);
107 dev=PNP_DEV(0x2e, W83627THG_SP2);
108 pnp_set_logical_device(dev);
109 pnp_set_enable(dev, 0);
110 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
111 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
112 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
113 pnp_set_enable(dev, 1);
115 dev=PNP_DEV(0x2e, W83627THG_KBC);
116 pnp_set_logical_device(dev);
117 pnp_set_enable(dev, 0);
118 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
119 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
120 // pnp_write_config(dev, 0xf0, 0x82);
121 pnp_set_enable(dev, 1);
123 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
124 pnp_set_logical_device(dev);
125 pnp_set_enable(dev, 0);
126 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
127 pnp_set_enable(dev, 1);
129 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
130 pnp_set_logical_device(dev);
131 pnp_set_enable(dev, 1); // Just enable it
133 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
134 pnp_set_logical_device(dev);
135 pnp_set_enable(dev, 0);
136 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
137 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
138 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
140 dev=PNP_DEV(0x2e, W83627THG_FDC);
141 pnp_set_logical_device(dev);
142 pnp_set_enable(dev, 0);
144 dev=PNP_DEV(0x2e, W83627THG_PP);
145 pnp_set_logical_device(dev);
146 pnp_set_enable(dev, 0);
149 dev=PNP_DEV(0x2e, W83627THG_HWM);
150 pnp_set_logical_device(dev);
151 pnp_set_enable(dev, 0);
152 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
153 pnp_set_enable(dev, 1);
155 pnp_exit_ext_func_mode(dev);
157 dev=PNP_DEV(0x4e, W83627THG_SP1);
158 pnp_enter_ext_func_mode(dev);
160 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
161 pnp_set_enable(dev, 0);
162 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
163 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
164 pnp_set_enable(dev, 1);
166 dev=PNP_DEV(0x4e, W83627THG_SP2);
167 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
168 pnp_set_enable(dev, 0);
169 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
170 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
171 pnp_set_enable(dev, 1);
173 dev=PNP_DEV(0x4e, W83627THG_FDC);
174 pnp_set_logical_device(dev);
175 pnp_set_enable(dev, 0);
177 dev=PNP_DEV(0x4e, W83627THG_PP);
178 pnp_set_logical_device(dev);
179 pnp_set_enable(dev, 0);
181 dev=PNP_DEV(0x4e, W83627THG_KBC);
182 pnp_set_logical_device(dev);
183 pnp_set_enable(dev, 0);
184 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
185 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
187 pnp_exit_ext_func_mode(dev);
190 static void rcba_config(void)
194 /* Set up virtual channel 0 */
195 //RCBA32(0x0014) = 0x80000001;
196 //RCBA32(0x001c) = 0x03128010;
198 /* Device 1f interrupt pin register */
199 RCBA32(0x3100) = 0x00042210;
200 /* Device 1d interrupt pin register */
201 RCBA32(0x310c) = 0x00214321;
203 /* dev irq route register */
204 RCBA16(0x3140) = 0x0132;
205 RCBA16(0x3142) = 0x3241;
206 RCBA16(0x3144) = 0x0237;
207 RCBA16(0x3146) = 0x3210;
208 RCBA16(0x3148) = 0x3210;
211 RCBA8(0x31ff) = 0x03;
213 /* Enable upper 128bytes of CMOS */
214 RCBA32(0x3400) = (1 << 2);
216 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
217 * device always has to be implemented. So disabling ethernet port 1
218 * would essentially disable all three ethernet ports of the mainboard.
219 * It's possible to rename the ports to achieve compatibility to the
220 * PCI spec but this will confuse all (static!) tables containing
221 * interrupt routing information.
222 * To avoid this, we enable (unused) port 6 and swap it with port 1
223 * in the case that ethernet port 1 is disabled. Since no devices
224 * are connected to that port, we don't have to worry about interrupt
227 int port_shuffle = 0;
229 /* Disable unused devices */
230 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
231 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
233 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
234 printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
237 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
238 printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
241 if (reg32 & FD_PCIE1)
244 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
245 printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
248 if (reg32 & FD_PCIE1)
253 /* Enable PCIE6 again */
255 /* Swap PCIE6 and PCIE1 */
256 RCBA32(RPFN) = 0x00043215;
261 RCBA32(0x3418) = reg32;
263 /* Enable PCIe Root Port Clock Gate */
264 // RCBA32(0x341c) = 0x00000001;
267 static void early_ich7_init(void)
272 // program secondary mlt XXX byte?
273 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
275 // reset rtc power status
276 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
278 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
280 // usb transient disconnect
281 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
283 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
285 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
286 reg32 |= (1 << 29) | (1 << 17);
287 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
289 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
290 reg32 |= (1 << 31) | (1 << 27);
291 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
293 RCBA32(0x0088) = 0x0011d000;
294 RCBA16(0x01fc) = 0x060f;
295 RCBA32(0x01f4) = 0x86000040;
296 RCBA32(0x0214) = 0x10030549;
297 RCBA32(0x0218) = 0x00020504;
298 RCBA8(0x0220) = 0xc5;
299 reg32 = RCBA32(0x3410);
301 RCBA32(0x3410) = reg32;
302 reg32 = RCBA32(0x3430);
305 RCBA32(0x3430) = reg32;
306 RCBA32(0x3418) |= (1 << 0);
307 RCBA16(0x0200) = 0x2008;
308 RCBA8(0x2027) = 0x0d;
309 RCBA16(0x3e08) |= (1 << 7);
310 RCBA16(0x3e48) |= (1 << 7);
311 RCBA32(0x3e0e) |= (1 << 7);
312 RCBA32(0x3e4e) |= (1 << 7);
314 // next step only on ich7m b0 and later:
315 reg32 = RCBA32(0x2034);
316 reg32 &= ~(0x0f << 16);
318 RCBA32(0x2034) = reg32;
323 // Now, this needs to be included because it relies on the symbol
324 // __PRE_RAM__ being set during CAR stage (in order to compile the
325 // BSS free versions of the functions). Either rewrite the code
326 // to be always BSS free, or invent a flag that's better suited than
327 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
329 #include "lib/cbmem.c"
331 void main(unsigned long bist)
341 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
343 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
346 early_superio_config_w83627thg();
348 /* Set up the console */
352 i82801gx_enable_usbdebug(1);
353 early_usbdebug_init();
358 /* Halt if there was a built in self test failure */
359 report_bist_failure(bist);
361 if (MCHBAR16(SSKPD) == 0xCAFE) {
362 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
364 while (1) asm("hlt");
367 /* Perform some early chipset initialization required
368 * before RAM initialization can work
370 i945_early_initialization();
373 reg32 = inl(DEFAULT_PMBASE + 0x04);
374 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
375 if (((reg32 >> 10) & 7) == 5) {
376 #if CONFIG_HAVE_ACPI_RESUME
377 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
379 /* Clear SLP_TYPE. This will break stage2 but
380 * we care for that when we get there.
382 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
385 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
389 /* Enable SPD ROMs and DDR-II DRAM */
392 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
393 dump_spd_registers();
396 sdram_initialize(boot_mode);
398 /* Perform some initialization that must run before stage2 */
401 /* This should probably go away. Until now it is required
402 * and mainboard specific
406 /* Chipset Errata! */
409 /* Initialize the internal PCIe links before we go into stage2 */
410 i945_late_initialization();
412 #if !CONFIG_HAVE_ACPI_RESUME
413 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
414 #if CONFIG_DEBUG_RAM_SETUP
415 sdram_dump_mchbar_registers();
419 /* This will not work if TSEG is in place! */
420 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
422 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
423 ram_check(0x00000000, 0x000a0000);
424 //ram_check(0x00100000, tom);
431 MCHBAR16(SSKPD) = 0xCAFE;
433 #if CONFIG_HAVE_ACPI_RESUME
434 /* Start address of high memory tables */
435 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
437 /* If there is no high memory area, we didn't boot before, so
438 * this is not a resume. In that case we just create the cbmem toc.
440 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
441 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
443 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
444 * through stage 2. We could keep stuff like stack and heap in high tables
445 * memory completely, but that's a wonderful clean up task for another
448 if (resume_backup_memory)
449 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
451 /* Magic for S3 resume */
452 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);