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>
35 #include <cpu/x86/bist.h>
36 #include "northbridge/intel/i945/i945.h"
37 #include "northbridge/intel/i945/raminit.h"
38 #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 early_superio_config(void)
105 int timeout = 100000;
106 device_t dev = PNP_DEV(0x2e, 3);
108 pnp_write_config(dev, 0x29, 0x06);
110 while(!(pnp_read_config(dev, 0x29) & 0x08) && timeout--)
114 pnp_set_logical_device(dev);
115 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
116 pnp_set_enable(dev, 1);
119 static void rcba_config(void)
121 /* Set up virtual channel 0 */
122 RCBA32(0x0014) = 0x80000001;
123 RCBA32(0x001c) = 0x03128010;
125 /* Device 1f interrupt pin register */
126 RCBA32(0x3100) = 0x00001230;
127 RCBA32(0x3108) = 0x40004321;
129 /* PCIe Interrupts */
130 RCBA32(0x310c) = 0x00004321;
131 /* HD Audio Interrupt */
132 RCBA32(0x3110) = 0x00000002;
134 /* dev irq route register */
135 RCBA16(0x3140) = 0x1007;
136 RCBA16(0x3142) = 0x0076;
137 RCBA16(0x3144) = 0x3210;
138 RCBA16(0x3146) = 0x7654;
139 RCBA16(0x3148) = 0x0010;
142 RCBA8(0x31ff) = 0x03;
144 /* Enable upper 128bytes of CMOS */
145 RCBA32(0x3400) = (1 << 2);
147 /* Disable unused devices */
148 RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_INTLAN | FD_ACMOD | FD_ACAUD;
149 RCBA32(0x3418) |= (1 << 0); // Required.
151 /* Set up I/O Trap #0 for 0xfe00 (SMIC) */
152 RCBA32(0x1e84) = 0x00020001;
153 RCBA32(0x1e80) = 0x0000fe01;
155 /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
156 RCBA32(0x1e9c) = 0x000200f0;
157 RCBA32(0x1e98) = 0x000c0801;
160 static void early_ich7_init(void)
165 // program secondary mlt XXX byte?
166 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
168 // reset rtc power status
169 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
171 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
173 // usb transient disconnect
174 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
176 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
178 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
179 reg32 |= (1 << 29) | (1 << 17);
180 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
182 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
183 reg32 |= (1 << 31) | (1 << 27);
184 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
186 RCBA32(0x0088) = 0x0011d000;
187 RCBA16(0x01fc) = 0x060f;
188 RCBA32(0x01f4) = 0x86000040;
189 RCBA32(0x0214) = 0x10030549;
190 RCBA32(0x0218) = 0x00020504;
191 RCBA8(0x0220) = 0xc5;
192 reg32 = RCBA32(0x3410);
194 RCBA32(0x3410) = reg32;
195 reg32 = RCBA32(0x3430);
198 RCBA32(0x3430) = reg32;
199 RCBA32(0x3418) |= (1 << 0);
200 RCBA16(0x0200) = 0x2008;
201 RCBA8(0x2027) = 0x0d;
202 RCBA16(0x3e08) |= (1 << 7);
203 RCBA16(0x3e48) |= (1 << 7);
204 RCBA32(0x3e0e) |= (1 << 7);
205 RCBA32(0x3e4e) |= (1 << 7);
207 // next step only on ich7m b0 and later:
208 reg32 = RCBA32(0x2034);
209 reg32 &= ~(0x0f << 16);
211 RCBA32(0x2034) = reg32;
216 void main(unsigned long bist)
220 const u8 spd_addrmap[2 * DIMM_SOCKETS] = { 0x50, 0x52, 0x51, 0x53 };
226 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, SBR);
228 pci_write_config16(PCI_DEV(0, 0x1e, 0), BCTRL, 0);
233 /* dock_init initializes the DLPC switch on
234 * thinpad side, so this is required even
237 if (dock_present()) {
239 early_superio_config();
240 /* Set up the console */
245 /* Halt if there was a built in self test failure */
246 report_bist_failure(bist);
248 if (MCHBAR16(SSKPD) == 0xCAFE) {
249 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
251 while (1) asm("hlt");
254 /* Perform some early chipset initialization required
255 * before RAM initialization can work
257 i945_early_initialization();
260 reg32 = inl(DEFAULT_PMBASE + 0x04);
261 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
262 if (((reg32 >> 10) & 7) == 5) {
263 #if CONFIG_HAVE_ACPI_RESUME
264 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
266 /* Clear SLP_TYPE. This will break stage2 but
267 * we care for that when we get there.
269 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
272 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
276 /* Enable SPD ROMs and DDR-II DRAM */
279 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
280 dump_spd_registers();
283 sdram_initialize(boot_mode, spd_addrmap);
285 /* Perform some initialization that must run before stage2 */
288 /* This should probably go away. Until now it is required
289 * and mainboard specific
293 /* Chipset Errata! */
296 /* Initialize the internal PCIe links before we go into stage2 */
297 i945_late_initialization();
299 #if !CONFIG_HAVE_ACPI_RESUME
300 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
301 #if CONFIG_DEBUG_RAM_SETUP
302 sdram_dump_mchbar_registers();
305 /* This will not work if TSEG is in place! */
306 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
308 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
309 ram_check(0x00000000, 0x000a0000);
310 ram_check(0x00100000, tom);
316 MCHBAR16(SSKPD) = 0xCAFE;
318 #if CONFIG_HAVE_ACPI_RESUME
319 /* Start address of high memory tables */
320 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
322 /* If there is no high memory area, we didn't boot before, so
323 * this is not a resume. In that case we just create the cbmem toc.
325 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
326 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
328 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
329 * through stage 2. We could keep stuff like stack and heap in high tables
330 * memory completely, but that's a wonderful clean up task for another
333 if (resume_backup_memory)
334 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
336 /* Magic for S3 resume */
337 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, SKPAD_ACPI_S3_MAGIC);