2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
5 * Copyright (C) 2011 Sven Schnelle <svens@stackframe.org>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; version 2 of
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
23 // __PRE_RAM__ means: use "unsigned" for device, not a struct.
28 #include <arch/romcc_io.h>
29 #include <device/pci_def.h>
30 #include <device/pnp_def.h>
31 #include <cpu/x86/lapic.h>
33 #include <pc80/mc146818rtc.h>
34 #include <console/console.h>
36 #include <cpu/x86/bist.h>
37 #include "northbridge/intel/i945/i945.h"
38 #include "northbridge/intel/i945/raminit.h"
39 #include "southbridge/intel/i82801gx/i82801gx.h"
41 void setup_ich7_gpios(void)
43 printk(BIOS_DEBUG, " GPIOS...");
47 6: Unknown (Pulled high by R215 to VCC3B)
51 10: Unknown (Pulled high by R700 to VCC3M
54 14: Unknown (Pulled high by R321 to VCC3)
55 15: Unknown (Pulled high by R258 to VCC3)
56 19: Unknown (Pulled low by R594)
57 21: Unknown (Pulled high by R145 to VCC3)
69 outl(0x1f40f7c2, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
70 outl(0xe0e8ffc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
71 outl(0xfbf6ddfd, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
72 /* Output Control Registers */
73 outl(0x00040000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
74 /* Input Control Registers */
75 outl(0x000039ff, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
76 outl(0x000100f2, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
77 outl(0x000000f0, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
78 outl(0x00030043, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
81 static void ich7_enable_lpc(void)
84 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
86 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0210);
88 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x1f0d);
90 /* range 0x1600 - 0x167f */
91 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x84, 0x1601);
92 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x86, 0x007c);
94 /* range 0x15e0 - 0x10ef */
95 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x88, 0x15e1);
96 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8a, 0x000c);
98 /* range 0x1680 - 0x169f */
99 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8c, 0x1681);
100 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x8e, 0x001c);
103 static void pnp_write_register(device_t dev, int reg, int val)
105 unsigned int port = dev >> 8;
110 static void dock_write_register(int reg, int value)
114 /* original software reads the chip id after every
115 I/O operation. Not sure if they are doing it for
116 some code switching depending on hardware or just
117 to have a delay after every operation.
119 Do it the same way for now, we may remove it later
126 static void dock_dlpc_init(void)
128 /* Select DLPC module */
129 dock_write_register(0x07, 0x19);
130 /* DLPC Base Address 0x164c */
131 dock_write_register(0x60, 0x16);
132 dock_write_register(0x61, 0x4c);
134 dock_write_register(0x30, 0x01);
137 while(!(inb(0x164c) & 8))
141 static void dock_gpio_set_mode(int port, int mode)
143 dock_write_register(0xf0, port);
144 dock_write_register(0xf1, mode);
148 static void dock_gpio_init(void)
150 /* Select GPIO module */
151 dock_write_register(0x07, 0x07);
152 /* GPIO Base Address 0x1680 */
153 dock_write_register(0x60, 0x16);
154 dock_write_register(0x61, 0x80);
157 dock_write_register(0x30, 0x01);
159 dock_gpio_set_mode(0x00, 3);
160 dock_gpio_set_mode(0x01, 3);
161 dock_gpio_set_mode(0x02, 0);
162 dock_gpio_set_mode(0x03, 3);
163 dock_gpio_set_mode(0x04, 4);
164 dock_gpio_set_mode(0x20, 4);
165 dock_gpio_set_mode(0x21, 4);
166 dock_gpio_set_mode(0x23, 4);
169 static void connect_dock(void)
171 /* Enable 14.318MHz CLK on CLKIN */
172 dock_write_register(0x29, 0x00);
173 dock_write_register(0x29, 0xa0);
175 /* Assert D_PLTRST# */
178 /* Deassert D_PLTRST# */
182 static void early_superio_config(void)
186 dev=PNP_DEV(0x2e, 0x00);
187 pnp_write_register(dev, 0x29, 0x06);
190 pnp_write_register(dev, 0x07, 0x03);
191 pnp_write_register(dev, 0x60, 0x03);
192 pnp_write_register(dev, 0x61, 0xf8);
193 pnp_write_register(dev, 0x30, 0x01);
196 static void rcba_config(void)
198 /* Set up virtual channel 0 */
199 RCBA32(0x0014) = 0x80000001;
200 RCBA32(0x001c) = 0x03128010;
202 /* Device 1f interrupt pin register */
203 RCBA32(0x3100) = 0x00001230;
204 RCBA32(0x3108) = 0x40004321;
206 /* PCIe Interrupts */
207 RCBA32(0x310c) = 0x00004321;
208 /* HD Audio Interrupt */
209 RCBA32(0x3110) = 0x00000002;
211 /* dev irq route register */
212 RCBA16(0x3140) = 0x1007;
213 RCBA16(0x3142) = 0x0076;
214 RCBA16(0x3144) = 0x3210;
215 RCBA16(0x3146) = 0x7654;
216 RCBA16(0x3148) = 0x0010;
219 RCBA8(0x31ff) = 0x03;
221 /* Enable upper 128bytes of CMOS */
222 RCBA32(0x3400) = (1 << 2);
224 /* Disable unused devices */
225 RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_INTLAN | FD_ACMOD | FD_ACAUD;
226 RCBA32(0x3418) |= (1 << 0); // Required.
229 static void early_ich7_init(void)
234 // program secondary mlt XXX byte?
235 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
237 // reset rtc power status
238 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
240 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
242 // usb transient disconnect
243 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
245 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
247 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
248 reg32 |= (1 << 29) | (1 << 17);
249 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
251 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
252 reg32 |= (1 << 31) | (1 << 27);
253 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
255 RCBA32(0x0088) = 0x0011d000;
256 RCBA16(0x01fc) = 0x060f;
257 RCBA32(0x01f4) = 0x86000040;
258 RCBA32(0x0214) = 0x10030549;
259 RCBA32(0x0218) = 0x00020504;
260 RCBA8(0x0220) = 0xc5;
261 reg32 = RCBA32(0x3410);
263 RCBA32(0x3410) = reg32;
264 reg32 = RCBA32(0x3430);
267 RCBA32(0x3430) = reg32;
268 RCBA32(0x3418) |= (1 << 0);
269 RCBA16(0x0200) = 0x2008;
270 RCBA8(0x2027) = 0x0d;
271 RCBA16(0x3e08) |= (1 << 7);
272 RCBA16(0x3e48) |= (1 << 7);
273 RCBA32(0x3e0e) |= (1 << 7);
274 RCBA32(0x3e4e) |= (1 << 7);
276 // next step only on ich7m b0 and later:
277 reg32 = RCBA32(0x2034);
278 reg32 &= ~(0x0f << 16);
280 RCBA32(0x2034) = reg32;
285 void main(unsigned long bist)
294 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
296 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
302 early_superio_config();
304 /* Set up the console */
308 i82801gx_enable_usbdebug(1);
309 early_usbdebug_init();
314 /* Halt if there was a built in self test failure */
315 report_bist_failure(bist);
317 if (MCHBAR16(SSKPD) == 0xCAFE) {
318 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
320 while (1) asm("hlt");
323 /* Perform some early chipset initialization required
324 * before RAM initialization can work
326 i945_early_initialization();
329 reg32 = inl(DEFAULT_PMBASE + 0x04);
330 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
331 if (((reg32 >> 10) & 7) == 5) {
332 #if CONFIG_HAVE_ACPI_RESUME
333 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
335 /* Clear SLP_TYPE. This will break stage2 but
336 * we care for that when we get there.
338 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
341 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
345 /* Enable SPD ROMs and DDR-II DRAM */
348 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
349 dump_spd_registers();
352 sdram_initialize(boot_mode);
354 /* Perform some initialization that must run before stage2 */
357 /* This should probably go away. Until now it is required
358 * and mainboard specific
362 /* Chipset Errata! */
365 /* Initialize the internal PCIe links before we go into stage2 */
366 i945_late_initialization();
368 #if !CONFIG_HAVE_ACPI_RESUME
369 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
370 #if CONFIG_DEBUG_RAM_SETUP
371 sdram_dump_mchbar_registers();
374 /* This will not work if TSEG is in place! */
375 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
377 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
378 ram_check(0x00000000, 0x000a0000);
379 ram_check(0x00100000, tom);
385 MCHBAR16(SSKPD) = 0xCAFE;
387 #if CONFIG_HAVE_ACPI_RESUME
388 /* Start address of high memory tables */
389 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
391 /* If there is no high memory area, we didn't boot before, so
392 * this is not a resume. In that case we just create the cbmem toc.
394 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
395 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
397 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
398 * through stage 2. We could keep stuff like stack and heap in high tables
399 * memory completely, but that's a wonderful clean up task for another
402 if (resume_backup_memory)
403 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
405 /* Magic for S3 resume */
406 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
409 /* Set legacy Brightness control to full brightness */
410 pci_write_config8(PCI_DEV(0, 2, 1), 0xf4, 0xff);