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.
22 /* Configuration of the i945 driver */
23 #define CHIPSET_I945GM 1
24 //#define OVERRIDE_CLOCK_DISABLE 1
25 #define CHANNEL_XOR_RANDOMIZATION 1
30 #include <arch/romcc_io.h>
31 #include <device/pci_def.h>
32 #include <device/pnp_def.h>
33 #include <cpu/x86/lapic.h>
35 #include "superio/winbond/w83627ehg/w83627ehg.h"
37 #include <pc80/mc146818rtc.h>
39 #include <console/console.h>
40 #include <cpu/x86/bist.h>
43 #define DBGP_DEFAULT 1
44 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
45 #include "pc80/usbdebug_serial.c"
48 #include "lib/ramtest.c"
49 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
50 #include "superio/winbond/w83627ehg/w83627ehg_early_serial.c"
52 #include "northbridge/intel/i945/udelay.c"
54 #define SERIAL_DEV PNP_DEV(0x4e, W83627EHG_SP1)
56 #include "southbridge/intel/i82801gx/i82801gx.h"
57 static void setup_ich7_gpios(void)
59 printk(BIOS_DEBUG, " GPIOS...");
60 /* General Registers */
61 outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
62 outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
63 outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
64 /* Output Control Registers */
65 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
66 /* Input Control Registers */
67 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
68 outl(0x000100ff, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
69 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
70 outl(0x00010035, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
73 #include "northbridge/intel/i945/early_init.c"
75 static inline int spd_read_byte(unsigned device, unsigned address)
77 return smbus_read_byte(device, address);
80 #include "northbridge/intel/i945/raminit.h"
81 #include "northbridge/intel/i945/raminit.c"
82 #include "northbridge/intel/i945/errata.c"
83 #include "northbridge/intel/i945/debug.c"
85 static void ich7_enable_lpc(void)
88 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
89 // Set COM1/COM2 decode range
90 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
91 // Enable COM1/COM2/KBD/SuperIO1+2
92 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
93 // Enable HWM at 0x290
94 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0291);
96 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
99 /* This box has one superio
100 * Also set up the GPIOs from the beginning. This is the "no schematic
101 * but safe anyways" method.
103 static void early_superio_config_w83627ehg(void)
107 dev=PNP_DEV(0x4e, W83627EHG_SP1);
108 pnp_enter_ext_func_mode(dev);
110 pnp_write_config(dev, 0x24, 0xc4); // PNPCSV
112 pnp_write_config(dev, 0x29, 0x01); // GPIO settings
113 pnp_write_config(dev, 0x2a, 0x40); // GPIO settings should be fc but gets set to 02
114 pnp_write_config(dev, 0x2b, 0xc0); // GPIO settings?
115 pnp_write_config(dev, 0x2c, 0x03); // GPIO settings?
116 pnp_write_config(dev, 0x2d, 0x20); // GPIO settings?
118 dev=PNP_DEV(0x4e, W83627EHG_SP1);
119 pnp_set_logical_device(dev);
120 pnp_set_enable(dev, 0);
121 pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
122 pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
123 pnp_set_enable(dev, 1);
125 dev=PNP_DEV(0x4e, W83627EHG_SP2);
126 pnp_set_logical_device(dev);
127 pnp_set_enable(dev, 0);
128 pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
129 pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
130 // pnp_write_config(dev, 0xf1, 4); // IRMODE0
131 pnp_set_enable(dev, 1);
133 dev=PNP_DEV(0x4e, W83627EHG_KBC); // Keyboard
134 pnp_set_logical_device(dev);
135 pnp_set_enable(dev, 0);
136 pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
137 pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
138 //pnp_write_config(dev, 0xf0, 0x82);
139 pnp_set_enable(dev, 1);
141 dev=PNP_DEV(0x4e, W83627EHG_GPIO2);
142 pnp_set_logical_device(dev);
143 pnp_set_enable(dev, 1); // Just enable it
145 dev=PNP_DEV(0x4e, W83627EHG_GPIO3);
146 pnp_set_logical_device(dev);
147 pnp_set_enable(dev, 0);
148 pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
149 pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
150 pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
152 dev=PNP_DEV(0x4e, W83627EHG_FDC);
153 pnp_set_logical_device(dev);
154 pnp_set_enable(dev, 0);
156 dev=PNP_DEV(0x4e, W83627EHG_PP);
157 pnp_set_logical_device(dev);
158 pnp_set_enable(dev, 0);
161 dev=PNP_DEV(0x4e, W83627EHG_HWM);
162 pnp_set_logical_device(dev);
163 pnp_set_enable(dev, 0);
164 pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
165 pnp_set_enable(dev, 1);
167 pnp_exit_ext_func_mode(dev);
170 static void rcba_config(void)
172 /* Set up virtual channel 0 */
173 //RCBA32(0x0014) = 0x80000001;
174 //RCBA32(0x001c) = 0x03128010;
176 /* Device 1f interrupt pin register */
177 RCBA32(0x3100) = 0x00042210;
178 /* Device 1d interrupt pin register */
179 RCBA32(0x310c) = 0x00214321;
181 /* dev irq route register */
182 RCBA16(0x3140) = 0x0132;
183 RCBA16(0x3142) = 0x0146;
184 RCBA16(0x3144) = 0x0237;
185 RCBA16(0x3146) = 0x3201;
186 RCBA16(0x3148) = 0x0146;
189 RCBA8(0x31ff) = 0x03;
191 /* Enable upper 128bytes of CMOS */
192 RCBA32(0x3400) = (1 << 2);
194 /* Enable PCIe Root Port Clock Gate */
195 // RCBA32(0x341c) = 0x00000001;
198 static void early_ich7_init(void)
203 // program secondary mlt XXX byte?
204 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
206 // reset rtc power status
207 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
209 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
211 // usb transient disconnect
212 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
214 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
216 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
217 reg32 |= (1 << 29) | (1 << 17);
218 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
220 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
221 reg32 |= (1 << 31) | (1 << 27);
222 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
224 RCBA32(0x0088) = 0x0011d000;
225 RCBA16(0x01fc) = 0x060f;
226 RCBA32(0x01f4) = 0x86000040;
227 RCBA32(0x0214) = 0x10030549;
228 RCBA32(0x0218) = 0x00020504;
229 RCBA8(0x0220) = 0xc5;
230 reg32 = RCBA32(0x3410);
232 RCBA32(0x3410) = reg32;
233 reg32 = RCBA32(0x3430);
236 RCBA32(0x3430) = reg32;
237 RCBA32(0x3418) |= (1 << 0);
238 RCBA16(0x0200) = 0x2008;
239 RCBA8(0x2027) = 0x0d;
240 RCBA16(0x3e08) |= (1 << 7);
241 RCBA16(0x3e48) |= (1 << 7);
242 RCBA32(0x3e0e) |= (1 << 7);
243 RCBA32(0x3e4e) |= (1 << 7);
245 // next step only on ich7m b0 and later:
246 reg32 = RCBA32(0x2034);
247 reg32 &= ~(0x0f << 16);
249 RCBA32(0x2034) = reg32;
254 // Now, this needs to be included because it relies on the symbol
255 // __PRE_RAM__ being set during CAR stage (in order to compile the
256 // BSS free versions of the functions). Either rewrite the code
257 // to be always BSS free, or invent a flag that's better suited than
258 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
260 #include "lib/cbmem.c"
262 void main(unsigned long bist)
272 early_superio_config_w83627ehg();
274 /* Set up the console */
278 i82801gx_enable_usbdebug(DBGP_DEFAULT);
279 early_usbdebug_init();
284 /* Halt if there was a built in self test failure */
285 report_bist_failure(bist);
287 if (MCHBAR16(SSKPD) == 0xCAFE) {
288 printk(BIOS_DEBUG, "soft reset detected, rebooting properly\n");
290 while (1) asm("hlt");
293 /* Perform some early chipset initialization required
294 * before RAM initialization can work
296 i945_early_initialization();
299 reg32 = inl(DEFAULT_PMBASE + 0x04);
300 printk(BIOS_DEBUG, "PM1_CNT: %08x\n", reg32);
301 if (((reg32 >> 10) & 7) == 5) {
302 #if CONFIG_HAVE_ACPI_RESUME
303 printk(BIOS_DEBUG, "Resume from S3 detected.\n");
305 /* Clear SLP_TYPE. This will break stage2 but
306 * we care for that when we get there.
308 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
310 printk(BIOS_DEBUG, "Resume from S3 detected, but disabled.\n");
314 /* Enable SPD ROMs and DDR-II DRAM */
317 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
318 dump_spd_registers();
321 sdram_initialize(boot_mode);
323 /* Perform some initialization that must run before stage2 */
326 /* This should probably go away. Until now it is required
327 * and mainboard specific
331 /* Chipset Errata! */
334 /* Initialize the internal PCIe links before we go into stage2 */
335 i945_late_initialization();
337 #if !CONFIG_HAVE_ACPI_RESUME
338 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
339 #if CONFIG_DEBUG_RAM_SETUP
340 sdram_dump_mchbar_registers();
344 /* This will not work if TSEG is in place! */
345 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
347 printk(BIOS_DEBUG, "TOM: 0x%08x\n", tom);
348 ram_check(0x00000000, 0x000a0000);
349 //ram_check(0x00100000, tom);
356 MCHBAR16(SSKPD) = 0xCAFE;
358 #if CONFIG_HAVE_ACPI_RESUME
359 /* Start address of high memory tables */
360 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
362 /* If there is no high memory area, we didn't boot before, so
363 * this is not a resume. In that case we just create the cbmem toc.
365 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
366 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
368 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
369 * through stage 2. We could keep stuff like stack and heap in high tables
370 * memory completely, but that's a wonderful clean up task for another
373 if (resume_backup_memory)
374 memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
376 /* Magic for S3 resume */
377 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);