src/mainboard/kontron/986lcd-m/romstage.c

   1 /*
   2  * This file is part of the coreboot project.
   3  *
   4  * Copyright (C) 2007-2010 coresystems GmbH
   5  *
   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.
   9  *
  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.
  14  *
  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
  18  */
  19
  20 // __PRE_RAM__ means: use "unsigned" for device, not a struct.
  21 #define __PRE_RAM__
  22
  23 /* Configuration of the i945 driver */
  24 #define CHIPSET_I945GM 1
  25 /* Usually system firmware turns off system memory clock signals to
  26  * unused SO-DIMM slots to reduce EMI and power consumption.
  27  * However, the Kontron 986LCD-M does not like unused clock signals to
  28  * be disabled. If other similar mainboard occur, it would make sense
  29  * to make this an entry in the sysinfo structure, and pre-initialize that
  30  * structure in the mainboard's romstage.c main() function. For now a
  31  * #define will do.
  32  */
  33 #define OVERRIDE_CLOCK_DISABLE 1
  34 #define CHANNEL_XOR_RANDOMIZATION 1
  35
  36 #include <stdint.h>
  37 #include <string.h>
  38 #include <arch/io.h>
  39 #include <arch/romcc_io.h>
  40 #include <device/pci_def.h>
  41 #include <device/pnp_def.h>
  42 #include <cpu/x86/lapic.h>
  43
  44 #include "superio/winbond/w83627thg/w83627thg.h"
  45
  46 #include "option_table.h"
  47 #include "pc80/mc146818rtc_early.c"
  48
  49 #include <console/console.h>
  50 #include "pc80/serial.c"
  51 #include "arch/i386/lib/console.c"
  52 #include <cpu/x86/bist.h>
  53
  54 #if CONFIG_USBDEBUG_DIRECT
  55 #define DBGP_DEFAULT 1
  56 #include "southbridge/intel/i82801gx/i82801gx_usb_debug.c"
  57 #include "pc80/usbdebug_direct_serial.c"
  58 #endif
  59
  60 #include "lib/ramtest.c"
  61 #include "southbridge/intel/i82801gx/i82801gx_early_smbus.c"
  62 #include "superio/winbond/w83627thg/w83627thg_early_serial.c"
  63
  64 #include "northbridge/intel/i945/udelay.c"
  65
  66 #define SERIAL_DEV PNP_DEV(0x2e, W83627THG_SP1)
  67
  68 #include "southbridge/intel/i82801gx/i82801gx.h"
  69 static void setup_ich7_gpios(void)
  70 {
  71         printk_debug(" GPIOS...");
  72         /* General Registers */
  73         outl(0x1f1ff7c0, DEFAULT_GPIOBASE + 0x00);      /* GPIO_USE_SEL */
  74         outl(0xe0e8efc3, DEFAULT_GPIOBASE + 0x04);      /* GP_IO_SEL */
  75         outl(0xebffeeff, DEFAULT_GPIOBASE + 0x0c);      /* GP_LVL */
  76         /* Output Control Registers */
  77         outl(0x00000000, DEFAULT_GPIOBASE + 0x18);      /* GPO_BLINK */
  78         /* Input Control Registers */
  79         outl(0x00002180, DEFAULT_GPIOBASE + 0x2c);      /* GPI_INV */
  80         outl(0x000100ff, DEFAULT_GPIOBASE + 0x30);      /* GPIO_USE_SEL2 */
  81         outl(0x00000030, DEFAULT_GPIOBASE + 0x34);      /* GP_IO_SEL2 */
  82         outl(0x00010035, DEFAULT_GPIOBASE + 0x38);      /* GP_LVL */
  83 }
  84
  85 #include "northbridge/intel/i945/early_init.c"
  86
  87 static inline int spd_read_byte(unsigned device, unsigned address)
  88 {
  89         return smbus_read_byte(device, address);
  90 }
  91
  92 #include "northbridge/intel/i945/raminit.h"
  93 #include "northbridge/intel/i945/raminit.c"
  94 #include "northbridge/intel/i945/reset_test.c"
  95 #include "northbridge/intel/i945/errata.c"
  96 #include "northbridge/intel/i945/debug.c"
  97
  98 static void ich7_enable_lpc(void)
  99 {
 100         // Enable Serial IRQ
 101         pci_write_config8(PCI_DEV(0, 0x1f, 0), 0x64, 0xd0);
 102         // Set COM1/COM2 decode range
 103         pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x80, 0x0010);
 104         // Enable COM1/COM2/KBD/SuperIO1+2
 105         pci_write_config16(PCI_DEV(0, 0x1f, 0), 0x82, 0x340b);
 106         // Enable HWM at 0xa00
 107         pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x84, 0x00fc0a01);
 108         // COM3 decode
 109         pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x88, 0x000403e9);
 110         // COM4 decode
 111         pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x8c, 0x000402e9);
 112         // io 0x300 decode
 113         pci_write_config32(PCI_DEV(0, 0x1f, 0), 0x90, 0x00000301);
 114 }
 115
 116
 117 /* This box has two superios, so enabling serial becomes slightly excessive.
 118  * We disable a lot of stuff to make sure that there are no conflicts between
 119  * the two. Also set up the GPIOs from the beginning. This is the "no schematic
 120  * but safe anyways" method.
 121  */
 122 static void early_superio_config_w83627thg(void)
 123 {
 124         device_t dev;
 125
 126         dev=PNP_DEV(0x2e, W83627THG_SP1);
 127         pnp_enter_ext_func_mode(dev);
 128
 129         pnp_write_config(dev, 0x24, 0xc6); // PNPCSV
 130
 131         pnp_write_config(dev, 0x29, 0x43); // GPIO settings
 132         pnp_write_config(dev, 0x2a, 0x40); // GPIO settings
 133
 134         dev=PNP_DEV(0x2e, W83627THG_SP1);
 135         pnp_set_logical_device(dev);
 136         pnp_set_enable(dev, 0);
 137         pnp_set_iobase(dev, PNP_IDX_IO0, 0x3f8);
 138         pnp_set_irq(dev, PNP_IDX_IRQ0, 4);
 139         pnp_set_enable(dev, 1);
 140
 141         dev=PNP_DEV(0x2e, W83627THG_SP2);
 142         pnp_set_logical_device(dev);
 143         pnp_set_enable(dev, 0);
 144         pnp_set_iobase(dev, PNP_IDX_IO0, 0x2f8);
 145         pnp_set_irq(dev, PNP_IDX_IRQ0, 3);
 146         // pnp_write_config(dev, 0xf1, 4); // IRMODE0
 147         pnp_set_enable(dev, 1);
 148
 149         dev=PNP_DEV(0x2e, W83627THG_KBC);
 150         pnp_set_logical_device(dev);
 151         pnp_set_enable(dev, 0);
 152         pnp_set_iobase(dev, PNP_IDX_IO0, 0x60);
 153         pnp_set_iobase(dev, PNP_IDX_IO1, 0x64);
 154         // pnp_write_config(dev, 0xf0, 0x82);
 155         pnp_set_enable(dev, 1);
 156
 157         dev=PNP_DEV(0x2e, W83627THG_GAME_MIDI_GPIO1);
 158         pnp_set_logical_device(dev);
 159         pnp_set_enable(dev, 0);
 160         pnp_write_config(dev, 0xf5, 0xff); // invert all GPIOs
 161         pnp_set_enable(dev, 1);
 162
 163         dev=PNP_DEV(0x2e, W83627THG_GPIO2);
 164         pnp_set_logical_device(dev);
 165         pnp_set_enable(dev, 1); // Just enable it
 166
 167         dev=PNP_DEV(0x2e, W83627THG_GPIO3);
 168         pnp_set_logical_device(dev);
 169         pnp_set_enable(dev, 0);
 170         pnp_write_config(dev, 0xf0, 0xfb); // GPIO bit 2 is output
 171         pnp_write_config(dev, 0xf1, 0x00); // GPIO bit 2 is 0
 172         pnp_write_config(dev, 0x30, 0x03); // Enable GPIO3+4. pnp_set_enable is not sufficient
 173
 174         dev=PNP_DEV(0x2e, W83627THG_FDC);
 175         pnp_set_logical_device(dev);
 176         pnp_set_enable(dev, 0);
 177
 178         dev=PNP_DEV(0x2e, W83627THG_PP);
 179         pnp_set_logical_device(dev);
 180         pnp_set_enable(dev, 0);
 181
 182         /* Enable HWM */
 183         dev=PNP_DEV(0x2e, W83627THG_HWM);
 184         pnp_set_logical_device(dev);
 185         pnp_set_enable(dev, 0);
 186         pnp_set_iobase(dev, PNP_IDX_IO0, 0xa00);
 187         pnp_set_enable(dev, 1);
 188
 189         pnp_exit_ext_func_mode(dev);
 190
 191         dev=PNP_DEV(0x4e, W83627THG_SP1);
 192         pnp_enter_ext_func_mode(dev);
 193
 194         pnp_set_logical_device(dev); // Set COM3 to sane non-conflicting values
 195         pnp_set_enable(dev, 0);
 196         pnp_set_iobase(dev, PNP_IDX_IO0, 0x3e8);
 197         pnp_set_irq(dev, PNP_IDX_IRQ0, 11);
 198         pnp_set_enable(dev, 1);
 199
 200         dev=PNP_DEV(0x4e, W83627THG_SP2);
 201         pnp_set_logical_device(dev); // Set COM4 to sane non-conflicting values
 202         pnp_set_enable(dev, 0);
 203         pnp_set_iobase(dev, PNP_IDX_IO0, 0x2e8);
 204         pnp_set_irq(dev, PNP_IDX_IRQ0, 10);
 205         pnp_set_enable(dev, 1);
 206
 207         dev=PNP_DEV(0x4e, W83627THG_FDC);
 208         pnp_set_logical_device(dev);
 209         pnp_set_enable(dev, 0);
 210
 211         dev=PNP_DEV(0x4e, W83627THG_PP);
 212         pnp_set_logical_device(dev);
 213         pnp_set_enable(dev, 0);
 214
 215         dev=PNP_DEV(0x4e, W83627THG_KBC);
 216         pnp_set_logical_device(dev);
 217         pnp_set_enable(dev, 0);
 218         pnp_set_iobase(dev, PNP_IDX_IO0, 0x00);
 219         pnp_set_iobase(dev, PNP_IDX_IO1, 0x00);
 220
 221         pnp_exit_ext_func_mode(dev);
 222 }
 223
 224 static void rcba_config(void)
 225 {
 226         u32 reg32;
 227
 228         /* Set up virtual channel 0 */
 229         //RCBA32(0x0014) = 0x80000001;
 230         //RCBA32(0x001c) = 0x03128010;
 231
 232         /* Device 1f interrupt pin register */
 233         RCBA32(0x3100) = 0x00042210;
 234         /* Device 1d interrupt pin register */
 235         RCBA32(0x310c) = 0x00214321;
 236
 237         /* dev irq route register */
 238         RCBA16(0x3140) = 0x0132;
 239         RCBA16(0x3142) = 0x3241;
 240         RCBA16(0x3144) = 0x0237;
 241         RCBA16(0x3146) = 0x3210;
 242         RCBA16(0x3148) = 0x3210;
 243
 244         /* Enable IOAPIC */
 245         RCBA8(0x31ff) = 0x03;
 246
 247         /* Enable upper 128bytes of CMOS */
 248         RCBA32(0x3400) = (1 << 2);
 249
 250         /* Now, this is a bit ugly. As per PCI specification, function 0 of a
 251          * device always has to be implemented. So disabling ethernet port 1
 252          * would essentially disable all three ethernet ports of the mainboard.
 253          * It's possible to rename the ports to achieve compatibility to the
 254          * PCI spec but this will confuse all (static!) tables containing
 255          * interrupt routing information.
 256          * To avoid this, we enable (unused) port 6 and swap it with port 1
 257          * in the case that ethernet port 1 is disabled. Since no devices
 258          * are connected to that port, we don't have to worry about interrupt
 259          * routing.
 260          */
 261         int port_shuffle = 0;
 262
 263         /* Disable unused devices */
 264         reg32 = FD_ACMOD|FD_ACAUD|FD_PATA;
 265         reg32 |= FD_PCIE6|FD_PCIE5|FD_PCIE4;
 266
 267         if (read_option(CMOS_VSTART_ethernet1, CMOS_VLEN_ethernet1, 0) != 0) {
 268                 printk_debug("Disabling ethernet adapter 1.\n");
 269                 reg32 |= FD_PCIE1;
 270         }
 271         if (read_option(CMOS_VSTART_ethernet2, CMOS_VLEN_ethernet2, 0) != 0) {
 272                 printk_debug("Disabling ethernet adapter 2.\n");
 273                 reg32 |= FD_PCIE2;
 274         } else {
 275                 if (reg32 & FD_PCIE1)
 276                         port_shuffle = 1;
 277         }
 278         if (read_option(CMOS_VSTART_ethernet3, CMOS_VLEN_ethernet3, 0) != 0) {
 279                 printk_debug("Disabling ethernet adapter 3.\n");
 280                 reg32 |= FD_PCIE3;
 281         } else {
 282                 if (reg32 & FD_PCIE1)
 283                         port_shuffle = 1;
 284         }
 285
 286         if (port_shuffle) {
 287                 /* Enable PCIE6 again */
 288                 reg32 &= ~FD_PCIE6;
 289                 /* Swap PCIE6 and PCIE1 */
 290                 RCBA32(RPFN) = 0x00043215;
 291         }
 292
 293         reg32 |= 1;
 294
 295         RCBA32(0x3418) = reg32;
 296
 297         /* Enable PCIe Root Port Clock Gate */
 298         // RCBA32(0x341c) = 0x00000001;
 299 }
 300
 301 static void early_ich7_init(void)
 302 {
 303         uint8_t reg8;
 304         uint32_t reg32;
 305
 306         // program secondary mlt XXX byte?
 307         pci_write_config8(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
 308
 309         // reset rtc power status
 310         reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xa4);
 311         reg8 &= ~(1 << 2);
 312         pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xa4, reg8);
 313
 314         // usb transient disconnect
 315         reg8 = pci_read_config8(PCI_DEV(0, 0x1f, 0), 0xad);
 316         reg8 |= (3 << 0);
 317         pci_write_config8(PCI_DEV(0, 0x1f, 0), 0xad, reg8);
 318
 319         reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xfc);
 320         reg32 |= (1 << 29) | (1 << 17);
 321         pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xfc, reg32);
 322
 323         reg32 = pci_read_config32(PCI_DEV(0, 0x1d, 7), 0xdc);
 324         reg32 |= (1 << 31) | (1 << 27);
 325         pci_write_config32(PCI_DEV(0, 0x1d, 7), 0xdc, reg32);
 326
 327         RCBA32(0x0088) = 0x0011d000;
 328         RCBA16(0x01fc) = 0x060f;
 329         RCBA32(0x01f4) = 0x86000040;
 330         RCBA32(0x0214) = 0x10030549;
 331         RCBA32(0x0218) = 0x00020504;
 332         RCBA8(0x0220) = 0xc5;
 333         reg32 = RCBA32(0x3410);
 334         reg32 |= (1 << 6);
 335         RCBA32(0x3410) = reg32;
 336         reg32 = RCBA32(0x3430);
 337         reg32 &= ~(3 << 0);
 338         reg32 |= (1 << 0);
 339         RCBA32(0x3430) = reg32;
 340         RCBA32(0x3418) |= (1 << 0);
 341         RCBA16(0x0200) = 0x2008;
 342         RCBA8(0x2027) = 0x0d;
 343         RCBA16(0x3e08) |= (1 << 7);
 344         RCBA16(0x3e48) |= (1 << 7);
 345         RCBA32(0x3e0e) |= (1 << 7);
 346         RCBA32(0x3e4e) |= (1 << 7);
 347
 348         // next step only on ich7m b0 and later:
 349         reg32 = RCBA32(0x2034);
 350         reg32 &= ~(0x0f << 16);
 351         reg32 |= (5 << 16);
 352         RCBA32(0x2034) = reg32;
 353 }
 354
 355 #if CONFIG_USE_FALLBACK_IMAGE == 1
 356 #include "southbridge/intel/i82801gx/cmos_failover.c"
 357 #endif
 358
 359 #include <cbmem.h>
 360
 361 // Now, this needs to be included because it relies on the symbol
 362 // __PRE_RAM__ being set during CAR stage (in order to compile the
 363 // BSS free versions of the functions). Either rewrite the code
 364 // to be always BSS free, or invent a flag that's better suited than
 365 // __PRE_RAM__ to determine whether we're in ram init stage (stage 1)
 366 //
 367 #include "lib/cbmem.c"
 368
 369 #include "cpu/intel/model_6ex/cache_as_ram_disable.c"
 370
 371 void real_main(unsigned long bist)
 372 {
 373         u32 reg32;
 374         int boot_mode = 0;
 375
 376         if (bist == 0) {
 377                 enable_lapic();
 378         }
 379
 380         ich7_enable_lpc();
 381         early_superio_config_w83627thg();
 382
 383         /* Set up the console */
 384         uart_init();
 385
 386 #if CONFIG_USBDEBUG_DIRECT
 387         i82801gx_enable_usbdebug_direct(DBGP_DEFAULT);
 388         early_usbdebug_direct_init();
 389 #endif
 390
 391         console_init();
 392
 393         /* Halt if there was a built in self test failure */
 394         report_bist_failure(bist);
 395
 396         if (MCHBAR16(SSKPD) == 0xCAFE) {
 397                 printk_debug("soft reset detected.\n");
 398                 boot_mode = 1;
 399         }
 400
 401         /* Perform some early chipset initialization required
 402          * before RAM initialization can work
 403          */
 404         i945_early_initialization();
 405
 406         /* Read PM1_CNT */
 407         reg32 = inl(DEFAULT_PMBASE + 0x04);
 408         printk_debug("PM1_CNT: %08x\n", reg32);
 409         if (((reg32 >> 10) & 7) == 5) {
 410 #if CONFIG_HAVE_ACPI_RESUME
 411                 printk_debug("Resume from S3 detected.\n");
 412                 boot_mode = 2;
 413                 /* Clear SLP_TYPE. This will break stage2 but
 414                  * we care for that when we get there.
 415                  */
 416                 outl(reg32 & ~(7 << 10), DEFAULT_PMBASE + 0x04);
 417
 418 #else
 419                 printk_debug("Resume from S3 detected, but disabled.\n");
 420 #endif
 421         }
 422
 423         /* Enable SPD ROMs and DDR-II DRAM */
 424         enable_smbus();
 425
 426 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
 427         dump_spd_registers();
 428 #endif
 429
 430         sdram_initialize(boot_mode);
 431
 432         /* Perform some initialization that must run before stage2 */
 433         early_ich7_init();
 434
 435         /* This should probably go away. Until now it is required
 436          * and mainboard specific
 437          */
 438         rcba_config();
 439
 440         /* Chipset Errata! */
 441         fixup_i945_errata();
 442
 443         /* Initialize the internal PCIe links before we go into stage2 */
 444         i945_late_initialization();
 445
 446 #if !CONFIG_HAVE_ACPI_RESUME
 447 #if CONFIG_DEFAULT_CONSOLE_LOGLEVEL > 8
 448 #if defined(DEBUG_RAM_SETUP)
 449         sdram_dump_mchbar_registers();
 450 #endif
 451
 452         {
 453                 /* This will not work if TSEG is in place! */
 454                 u32 tom = pci_read_config32(PCI_DEV(0,2,0), 0x5c);
 455
 456                 printk_debug("TOM: 0x%08x\n", tom);
 457                 ram_check(0x00000000, 0x000a0000);
 458                 //ram_check(0x00100000, tom);
 459         }
 460 #endif
 461 #endif
 462
 463         MCHBAR16(SSKPD) = 0xCAFE;
 464
 465 #if CONFIG_HAVE_ACPI_RESUME
 466         /* Start address of high memory tables */
 467         unsigned long high_ram_base = get_top_of_ram() - HIGH_MEMORY_SIZE;
 468
 469         /* If there is no high memory area, we didn't boot before, so
 470          * this is not a resume. In that case we just create the cbmem toc.
 471          */
 472         if ((boot_mode == 2) && cbmem_reinit((u64)high_ram_base)) {
 473                 void *resume_backup_memory = cbmem_find(CBMEM_ID_RESUME);
 474
 475                 /* copy 1MB - 64K to high tables ram_base to prevent memory corruption
 476                  * through stage 2. We could keep stuff like stack and heap in high tables
 477                  * memory completely, but that's a wonderful clean up task for another
 478                  * day.
 479                  */
 480                 if (resume_backup_memory)
 481                         memcpy(resume_backup_memory, (void *)CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
 482
 483                 /* Magic for S3 resume */
 484                 pci_write_config32(PCI_DEV(0, 0x00, 0), SKPAD, 0xcafed00d);
 485         }
 486 #endif
 487 }
 488