2 * This file is part of the coreboot project.
4 * Copyright (C) 2007-2009 coresystems GmbH
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; version 2 of
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
22 // __PRE_RAM__ means: use "unsigned" for device, not a struct.
25 /* Configuration of the i945 driver */
26 #define CHIPSET_I945GM 1
27 #define CHANNEL_XOR_RANDOMIZATION 1
28 // Rocky freezing temperature settings:
29 #define MAXIMUM_SUPPORTED_FREQUENCY 400
34 #include <arch/romcc_io.h>
35 #include <device/pci_def.h>
36 #include <device/pnp_def.h>
37 #include <cpu/x86/lapic.h>
39 #include "option_table.h"
40 #include "pc80/mc146818rtc_early.c"
42 #include <console/console.h>
43 #include "pc80/serial.c"
44 #include "arch/i386/lib/console.c"
45 #include <cpu/x86/bist.h>
47 #if CONFIG_USBDEBUG_DIRECT
48 #define DBGP_DEFAULT 1
49 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
50 #include "pc80/usbdebug_direct_serial.c"
53 #include "lib/ramtest.c"
54 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
56 #include "northbridge/intel/i945/udelay.c"
58 #include "southbridge/intel/i82801gx/i82801gx.h"
59 static void setup_ich7_gpios(void)
61 printk_debug(" GPIOS...");
62 /* General Registers */
63 outl(0xbfc0f7c0, DEFAULT_GPIOBASE + 0x00); /* GPIO_USE_SEL */
64 outl(0x70a87d83, DEFAULT_GPIOBASE + 0x04); /* GP_IO_SEL */
65 outl(0x7dc07f83, DEFAULT_GPIOBASE + 0x0c); /* GP_LVL */
66 /* Output Control Registers */
67 outl(0x00000000, DEFAULT_GPIOBASE + 0x18); /* GPO_BLINK */
68 /* Input Control Registers */
69 outl(0x00002180, DEFAULT_GPIOBASE + 0x2c); /* GPI_INV */
70 outl(0x000100e8, DEFAULT_GPIOBASE + 0x30); /* GPIO_USE_SEL2 */
71 outl(0x00000030, DEFAULT_GPIOBASE + 0x34); /* GP_IO_SEL2 */
72 outl(0x00010030, DEFAULT_GPIOBASE + 0x38); /* GP_LVL */
75 #include "northbridge/intel/i945/early_init.c"
77 static inline int spd_read_byte(unsigned device, unsigned address)
79 return smbus_read_byte(device, address);
82 #include "northbridge/intel/i945/raminit.h"
83 #include "northbridge/intel/i945/raminit.c"
84 #include "northbridge/intel/i945/reset_test.c"
85 #include "northbridge/intel/i945/errata.c"
86 #include "northbridge/intel/i945/debug.c"
88 static void ich7_enable_lpc(void)
91 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
93 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0007);
95 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x3f0f);
97 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x84, 0x02e1);
98 pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x86, 0x001c);
100 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x00fc0601);
102 pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x00040069);
106 /* This box has two superios, so enabling serial becomes slightly excessive.
107 * We disable a lot of stuff to make sure that there are no conflicts between
108 * the two. Also set up the GPIOs from the beginning. This is the "no schematic
109 * but safe anyways" method.
111 static inline void pnp_enter_ext_func_mode(device_t dev)
113 unsigned int port = dev >> 8;
117 static void pnp_exit_ext_func_mode(device_t dev)
119 unsigned int port = dev >> 8;
123 static void pnp_write_register(device_t dev, int reg, int val)
125 unsigned int port = dev >> 8;
130 static void early_superio_config(void)
134 dev=PNP_DEV(0x2e, 0x00);
136 pnp_enter_ext_func_mode(dev);
137 pnp_write_register(dev, 0x01, 0x94); // Extended Parport modes
138 pnp_write_register(dev, 0x02, 0x88); // UART power on
139 pnp_write_register(dev, 0x03, 0x72); // Floppy
140 pnp_write_register(dev, 0x04, 0x01); // EPP + SPP
141 pnp_write_register(dev, 0x14, 0x03); // Floppy
142 pnp_write_register(dev, 0x20, (0x3f0 >> 2)); // Floppy
143 pnp_write_register(dev, 0x23, (0x378 >> 2)); // PP base
144 pnp_write_register(dev, 0x24, (0x3f8 >> 2)); // UART1 base
145 pnp_write_register(dev, 0x25, (0x2f8 >> 2)); // UART2 base
146 pnp_write_register(dev, 0x26, (2 << 4) | 0); // FDC + PP DMA
147 pnp_write_register(dev, 0x27, (6 << 4) | 7); // FDC + PP DMA
148 pnp_write_register(dev, 0x28, (4 << 4) | 3); // UART1,2 IRQ
149 /* These are the SMI status registers in the SIO: */
150 pnp_write_register(dev, 0x30, (0x600 >> 4)); // Runtime Register Block Base
152 pnp_write_register(dev, 0x31, 0x00); // GPIO1 DIR
153 pnp_write_register(dev, 0x32, 0x00); // GPIO1 POL
154 pnp_write_register(dev, 0x33, 0x40); // GPIO2 DIR
155 pnp_write_register(dev, 0x34, 0x00); // GPIO2 POL
156 pnp_write_register(dev, 0x35, 0xff); // GPIO3 DIR
157 pnp_write_register(dev, 0x36, 0x00); // GPIO3 POL
158 pnp_write_register(dev, 0x37, 0xe0); // GPIO4 DIR
159 pnp_write_register(dev, 0x38, 0x00); // GPIO4 POL
160 pnp_write_register(dev, 0x39, 0x80); // GPIO4 POL
162 pnp_exit_ext_func_mode(dev);
165 static void rcba_config(void)
167 /* Set up virtual channel 0 */
168 //RCBA32(0x0014) = 0x80000001;
169 //RCBA32(0x001c) = 0x03128010;
171 /* Device 1f interrupt pin register */
172 RCBA32(0x3100) = 0x00042220;
173 /* Device 1d interrupt pin register */
174 RCBA32(0x310c) = 0x00214321;
176 /* dev irq route register */
177 RCBA16(0x3140) = 0x0232;
178 RCBA16(0x3142) = 0x3246;
179 RCBA16(0x3144) = 0x0237;
180 RCBA16(0x3146) = 0x3201;
181 RCBA16(0x3148) = 0x3216;
184 RCBA8(0x31ff) = 0x03;
186 /* Enable upper 128bytes of CMOS */
187 RCBA32(0x3400) = (1 << 2);
189 /* Disable unused devices */
190 RCBA32(0x3418) = FD_PCIE6 | FD_PCIE5 | FD_PCIE3 | FD_PCIE2 |
191 FD_INTLAN | FD_ACMOD | FD_HDAUD | FD_PATA;
192 RCBA32(0x3418) |= (1 << 0); // Required.
194 /* Enable PCIe Root Port Clock Gate */
195 // RCBA32(0x341c) = 0x00000001;
197 /* This should probably go into the ACPI OS Init trap */
199 /* Set up I/O Trap #0 for 0xfe00 (SMIC) */
200 RCBA32(0x1e84) = 0x00020001;
201 RCBA32(0x1e80) = 0x0000fe01;
203 /* Set up I/O Trap #3 for 0x800-0x80c (Trap) */
204 RCBA32(0x1e9c) = 0x000200f0;
205 RCBA32(0x1e98) = 0x000c0801;
208 static void early_ich7_init(void)
213 // program secondary mlt XXX byte?
214 pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
216 // reset rtc power status
217 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
219 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
221 // usb transient disconnect
222 reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
224 pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
226 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
227 reg32 |= (1 << 29) | (1 << 17);
228 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
230 reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
231 reg32 |= (1 << 31) | (1 << 27);
232 pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
234 RCBA32(0x0088) = 0x0011d000;
235 RCBA16(0x01fc) = 0x060f;
236 RCBA32(0x01f4) = 0x86000040;
237 RCBA32(0x0214) = 0x10030549;
238 RCBA32(0x0218) = 0x00020504;
239 RCBA8(0x0220) = 0xc5;
240 reg32 = RCBA32(0x3410);
242 RCBA32(0x3410) = reg32;
243 reg32 = RCBA32(0x3430);
246 RCBA32(0x3430) = reg32;
247 RCBA32(0x3418) |= (1 << 0);
248 RCBA16(0x0200) = 0x2008;
249 RCBA8(0x2027) = 0x0d;
250 RCBA16(0x3e08) |= (1 << 7);
251 RCBA16(0x3e48) |= (1 << 7);
252 RCBA32(0x3e0e) |= (1 << 7);
253 RCBA32(0x3e4e) |= (1 << 7);
255 // next step only on ich7m b0 and later:
256 reg32 = RCBA32(0x2034);
257 reg32 &= ~(0x0f << 16);
259 RCBA32(0x2034) = reg32;
262 #if CONFIG_USE_FALLBACK_IMAGE == 1
263 #include "southbridge/intel/i82801gx/cmos_failover.c"
266 static void init_artec_dongle(void)
268 // Enable 4MB decoding
275 // Now, this needs to be included because it relies on the symbol
276 // __PRE_RAM__ being set during CAR stage (in order to compile the
277 // BSS free versions of the functions). Either rewrite the code
278 // to be always BSS free, or invent a flag that's better suited than
279 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
281 #include "lib/cbmem.c"
283 void real_main(unsigned long bist)
293 early_superio_config();
295 /* Set up the console */
298 #if CONFIG_USBDEBUG_DIRECT
299 i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
300 early_usbdebug_direct_init();
305 /* Halt if there was a built in self test failure */
306 report_bist_failure(bist);
308 if (MCHBAR16(SSKPD) == 0xCAFE) {
309 printk_debug("soft reset detected.\n");
313 /* Perform some early chipset initialization required
314 * before RAM initialization can work
316 i945_early_initialization();
318 /* This has to happen after i945_early_initialization() */
322 reg32 = inl(DEFAULT_PMBASE + 0x04);
323 printk_debug("PM1_CNT: %08x\n", reg32);
324 if (((reg32 >> 10) & 7) == 5) {
325 #if CONFIG_HAVE_ACPI_RESUME
326 printk_debug("Resume from S3 detected.\n");
328 /* Clear SLP_TYPE. This will break stage2 but
329 * we care for that when we get there.
331 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
334 printk_debug("Resume from S3 detected, but disabled.\n");
338 /* Enable SPD ROMs and DDR-II DRAM */
341 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
342 dump_spd_registers();
345 sdram_initialize(boot_mode);
347 /* Perform some initialization that must run before stage2 */
350 /* This should probably go away. Until now it is required
351 * and mainboard specific
355 /* Chipset Errata! */
358 /* Initialize the internal PCIe links before we go into stage2 */
359 i945_late_initialization();
361 #if !CONFIG_HAVE_ACPI_RESUME
362 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
363 #if defined(DEBUG_RAM_SETUP)
364 sdram_dump_mchbar_registers();
367 /* This will not work if TSEG is in place! */
368 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
370 printk_debug("TOM: 0x%08x\n", tom);
371 ram_check(0x00000000, 0x000a0000);
372 ram_check(0x00100000, tom);
378 MCHBAR16(SSKPD) = 0xCAFE;
380 #if CONFIG_HAVE_ACPI_RESUME
381 /* Start address of high memory tables */
382 unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
384 /* If there is no high memory area, we didn't boot before, so
385 * this is not a resume. In that case we just create the cbmem toc.
387 if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
388 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
390 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
391 * through stage 2. We could keep stuff like stack and heap in high tables
392 * memory completely, but that's a wonderful clean up task for another
395 if (resume_backup_memory)
396 memcpy(resume_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
398 /* Magic for S3 resume */
399 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
404 #include "cpu/intel/model_6ex/cache_as_ram_disable.c"