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"
32 #include <pc80/mc146818rtc.h>
33 #include "option_table.h"
34 #include <console/console.h>
35 #include <cpu/x86/bist.h>
36 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
37 #include "northbridge/intel/i945/i945.h"
38 #include "northbridge/intel/i945/raminit.h"
39 #include "southbridge/intel/i82801gx/i82801gx.h"
41 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
43 void setup_ich7_gpios(void)
45 printk(BIOS_DEBUG, " GPIOS...");
46 /* General Registers */
47 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
48 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
49 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
50 /* Output Control Registers */
51 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
52 /* Input Control Registers */
53 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
54 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
55 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
56 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
59 static void ich7_enable_lpc(void)
62 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
63 // Set COM1/COM2 decode range
64 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
65 // Enable COM1/COM2/KBD/SuperIO1+2
66 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
67 // Enable HWM at 0xa00
68 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
70 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
72 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
74 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
77 /* This box has two superios, so enabling serial becomes slightly excessive.
78 * We disable a lot of stuff to make sure that there are no conflicts between
79 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
80 * but safe anyways" method.
82 static void early_superio_config_w83627thg(void)
86 dev=PNP_DEV(0x2e, W83627THG_SP1);
87 pnp_enter_ext_func_mode(dev);
89 pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
91 pnp_write_config(dev, 0x29, 0x43); // GPIO settings
92 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
94 dev=PNP_DEV(0x2e, W83627THG_SP1);
95 pnp_set_logical_device(dev);
96 pnp_set_enable(dev, 0);
97 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
98 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
99 pnp_set_enable(dev, 1);
101 dev=PNP_DEV(0x2e, W83627THG_SP2);
102 pnp_set_logical_device(dev);
103 pnp_set_enable(dev, 0);
104 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
105 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
106 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
107 pnp_set_enable(dev, 1);
109 dev=PNP_DEV(0x2e, W83627THG_KBC);
110 pnp_set_logical_device(dev);
111 pnp_set_enable(dev, 0);
112 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
113 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
114 // pnp_write_config(dev, 0xf0, 0x82);
115 pnp_set_enable(dev, 1);
117 dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
118 pnp_set_logical_device(dev);
119 pnp_set_enable(dev, 0);
120 pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
121 pnp_set_enable(dev, 1);
123 dev=PNP_DEV(0x2e, W83627THG_GPIO2);
124 pnp_set_logical_device(dev);
125 pnp_set_enable(dev, 1); // Just enable it
127 dev=PNP_DEV(0x2e, W83627THG_GPIO3);
128 pnp_set_logical_device(dev);
129 pnp_set_enable(dev, 0);
130 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
131 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
132 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
134 dev=PNP_DEV(0x2e, W83627THG_FDC);
135 pnp_set_logical_device(dev);
136 pnp_set_enable(dev, 0);
138 dev=PNP_DEV(0x2e, W83627THG_PP);
139 pnp_set_logical_device(dev);
140 pnp_set_enable(dev, 0);
143 dev=PNP_DEV(0x2e, W83627THG_HWM);
144 pnp_set_logical_device(dev);
145 pnp_set_enable(dev, 0);
146 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
147 pnp_set_enable(dev, 1);
149 pnp_exit_ext_func_mode(dev);
151 dev=PNP_DEV(0x4e, W83627THG_SP1);
152 pnp_enter_ext_func_mode(dev);
154 pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
155 pnp_set_enable(dev, 0);
156 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
157 pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
158 pnp_set_enable(dev, 1);
160 dev=PNP_DEV(0x4e, W83627THG_SP2);
161 pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
162 pnp_set_enable(dev, 0);
163 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
164 pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
165 pnp_set_enable(dev, 1);
167 dev=PNP_DEV(0x4e, W83627THG_FDC);
168 pnp_set_logical_device(dev);
169 pnp_set_enable(dev, 0);
171 dev=PNP_DEV(0x4e, W83627THG_PP);
172 pnp_set_logical_device(dev);
173 pnp_set_enable(dev, 0);
175 dev=PNP_DEV(0x4e, W83627THG_KBC);
176 pnp_set_logical_device(dev);
177 pnp_set_enable(dev, 0);
178 pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
179 pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
181 pnp_exit_ext_func_mode(dev);
184 static void rcba_config(void)
188 /* Set up virtual channel 0 */
189 //RCBA32(0x0014) = 0x80000001;
190 //RCBA32(0x001c) = 0x03128010;
192 /* Device 1f interrupt pin register */
193 RCBA32(0x3100) = 0x00042210;
194 /* Device 1d interrupt pin register */
195 RCBA32(0x310c) = 0x00214321;
197 /* dev irq route register */
198 RCBA16(0x3140) = 0x0132;
199 RCBA16(0x3142) = 0x3241;
200 RCBA16(0x3144) = 0x0237;
201 RCBA16(0x3146) = 0x3210;
202 RCBA16(0x3148) = 0x3210;
205 RCBA8(0x31ff) = 0x03;
207 /* Enable upper 128bytes of CMOS */
208 RCBA32(0x3400) = (1 << 2);
210 /* Now, this is a bit ugly. As per PCI specification, function 0 of a
211 * device always has to be implemented. So disabling ethernet port 1
212 * would essentially disable all three ethernet ports of the mainboard.
213 * It's possible to rename the ports to achieve compatibility to the
214 * PCI spec but this will confuse all (static!) tables containing
215 * interrupt routing information.
216 * To avoid this, we enable (unused) port 6 and swap it with port 1
217 * in the case that ethernet port 1 is disabled. Since no devices
218 * are connected to that port, we don't have to worry about interrupt
221 int port_shuffle = 0;
223 /* Disable unused devices */
224 reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
225 reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
227 if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
228 printk(BIOS_DEBUG, "Disabling ethernet adapter 1.\n");
231 if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
232 printk(BIOS_DEBUG, "Disabling ethernet adapter 2.\n");
235 if (reg32 & FD_PCIE1)
238 if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
239 printk(BIOS_DEBUG, "Disabling ethernet adapter 3.\n");
242 if (reg32 & FD_PCIE1)
247 /* Enable PCIE6 again */
249 /* Swap PCIE6 and PCIE1 */
250 RCBA32(RPFN) = 0x00043215;
255 RCBA32(0x3418) = reg32;
257 /* Enable PCIe Root Port Clock Gate */
258 // RCBA32(0x341c) = 0x00000001;
261 static void early_ich7_init(void)
266 // program secondary mlt XXX byte?
267 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
269 // reset rtc power status
270 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
272 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
274 // usb transient disconnect
275 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
277 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
279 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
280 reg32 |= (1 << 29) | (1 << 17);
281 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
283 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
284 reg32 |= (1 << 31) | (1 << 27);
285 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
287 RCBA32(0x0088) = 0x0011d000;
288 RCBA16(0x01fc) = 0x060f;
289 RCBA32(0x01f4) = 0x86000040;
290 RCBA32(0x0214) = 0x10030549;
291 RCBA32(0x0218) = 0x00020504;
292 RCBA8(0x0220) = 0xc5;
293 reg32 = RCBA32(0x3410);
295 RCBA32(0x3410) = reg32;
296 reg32 = RCBA32(0x3430);
299 RCBA32(0x3430) = reg32;
300 RCBA32(0x3418) |= (1 << 0);
301 RCBA16(0x0200) = 0x2008;
302 RCBA8(0x2027) = 0x0d;
303 RCBA16(0x3e08) |= (1 << 7);
304 RCBA16(0x3e48) |= (1 << 7);
305 RCBA32(0x3e0e) |= (1 << 7);
306 RCBA32(0x3e4e) |= (1 << 7);
308 // next step only on ich7m b0 and later:
309 reg32 = RCBA32(0x2034);
310 reg32 &= ~(0x0f << 16);
312 RCBA32(0x2034) = reg32;
317 // Now, this needs to be included because it relies on the symbol
318 // __PRE_RAM__ being set during CAR stage (in order to compile the
319 // BSS free versions of the functions). Either rewrite the code
320 // to be always BSS free, or invent a flag that's better suited than
321 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
323 #include "lib/cbmem.c"
325 void main(unsigned long bist)
334 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
336 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
339 early_superio_config_w83627thg();
341 /* Set up the console */
345 i82801gx_enable_usbdebug(1);
346 early_usbdebug_init();
351 /* Halt if there was a built in self test failure */
352 report_bist_failure(bist);
354 if (MCHBAR16(SSKPD) == 0xCAFE) {
355 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
357 while (1) asm("hlt");
360 /* Perform some early chipset initialization required
361 * before RAM initialization can work
363 i945_early_initialization();
366 reg32 = inl(DEFAULT_PMBASE + 0x04);
367 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
368 if (((reg32 >> 10) & 7) == 5) {
369 #if CONFIG_HAVE_ACPI_RESUME
370 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
372 /* Clear SLP_TYPE. This will break stage2 but
373 * we care for that when we get there.
375 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
378 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
382 /* Enable SPD ROMs and DDR-II DRAM */
385 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
386 dump_spd_registers();
389 sdram_initialize(boot_mode);
391 /* Perform some initialization that must run before stage2 */
394 /* This should probably go away. Until now it is required
395 * and mainboard specific
399 /* Chipset Errata! */
402 /* Initialize the internal PCIe links before we go into stage2 */
403 i945_late_initialization();
405 #if !CONFIG_HAVE_ACPI_RESUME
406 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
407 #if CONFIG_DEBUG_RAM_SETUP
408 sdram_dump_mchbar_registers();
412 /* This will not work if TSEG is in place! */
413 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
415 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
416 ram_check(0x00000000, 0x000a0000);
417 //ram_check(0x00100000, tom);
424 MCHBAR16(SSKPD) = 0xCAFE;
426 #if CONFIG_HAVE_ACPI_RESUME
427 /* Start address of high memory tables */
428 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
430 /* If there is no high memory area, we didn't boot before, so
431 * this is not a resume. In that case we just create the cbmem toc.
433 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
434 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
436 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
437 * through stage 2. We could keep stuff like stack and heap in high tables
438 * memory completely, but that's a wonderful clean up task for another
441 if (resume_backup_memory)
442 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
444 /* Magic for S3 resume */
445 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);