2 * This file is part of the coreboot project.
4 * Copyright (C) 2010 Advanced Micro Devices, Inc.
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 #ifndef _SB700_EARLY_SETUP_C_
21 #define _SB700_EARLY_SETUP_C_
26 #include "sb700_smbus.c"
28 #define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */
31 static void pmio_write(u8 reg, u8 value)
34 outb(value, PM_INDEX + 1);
37 static u8 pmio_read(u8 reg)
40 return inb(PM_INDEX + 1);
43 /* RPR 2.28 Get SB ASIC Revision.*/
44 static u8 set_sb700_revision(void)
47 u8 rev_id, enable_14Mhz, byte;
50 /* if (rev != 0) return rev; */
52 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
54 if (dev == PCI_DEV_INVALID) {
55 die("SMBUS controller not found\n");
58 rev_id = pci_read_config8(dev, 0x08);
61 enable_14Mhz = (pmio_read(0x53) >> 6) & 1;
62 if (enable_14Mhz == 0x0)
64 else if (enable_14Mhz == 0x1) {
65 /* This happens, if does, only once. So later if we need to get
66 * the rivision ID, we don't have to make such a big function.
67 * We just get reg 0x8 in smbus dev. 0x39 is A11, 0x3A is A12. */
69 byte = pci_read_config8(dev, 0x40);
71 pci_write_config8(dev, 0x40, byte);
73 pci_write_config8(dev, 0x08, 0x3A); /* Change 0x39 to 0x3A. */
76 pci_write_config8(dev, 0x40, byte);
78 } else if (rev_id == 0x3A) { /* A12 will be 0x3A after BIOS is initialized */
80 } else if (rev_id == 0x3C) {
82 } else if (rev_id == 0x3D) {
85 die("It is not SB700 or SB710\n");
90 /***************************************
91 * Legacy devices are mapped to LPC space.
94 * ACPI Micro-controller port
96 * This function does not change port 0x80 decoding.
97 * Console output through any port besides 0x3f8 is unsupported.
98 * If you use FWH ROMs, you have to setup IDSEL.
99 ***************************************/
100 static void sb700_lpc_init(void)
106 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */
107 /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
108 * This bit has no meaning if debug strap is not enabled. So if the
109 * board keeps rebooting and the code fails to reach here, we could
110 * disable the debug strap first. */
111 reg32 = pci_read_config32(dev, 0x4C);
113 pci_write_config32(dev, 0x4C, reg32);
115 /* Enable lpc controller */
116 reg32 = pci_read_config32(dev, 0x64);
118 pci_write_config32(dev, 0x64, reg32);
120 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0); /* LPC Controller */
121 /* Decode port 0x3f8-0x3ff (Serial 0) */
122 // XXX Serial port decode on LPC is hardcoded to 0x3f8
123 reg8 = pci_read_config8(dev, 0x44);
125 pci_write_config8(dev, 0x44, reg8);
127 /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
128 reg8 = pci_read_config8(dev, 0x47);
129 reg8 |= (1 << 5) | (1 << 6);
130 pci_write_config8(dev, 0x47, reg8);
132 /* SuperIO, LPC ROM */
133 reg8 = pci_read_config8(dev, 0x48);
134 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
135 reg8 |= (1 << 1) | (1 << 0);
136 /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
137 reg8 |= (1 << 3) | (1 << 4);
138 /* Decode port 0x70-0x73 (RTC) */
140 pci_write_config8(dev, 0x48, reg8);
142 /* hardware should enable LPC ROM by pin straps */
143 /* ROM access at 0xFFF80000/0xFFF00000 - 0xFFFFFFFF */
144 /* See detail in 43366_sb700_bdg_nda_1.01.pdf page 17. */
145 /* enable LPC ROM range mirroring start 0x000e(0000) */
146 pci_write_config16(dev, 0x68, 0x000e);
147 /* enable LPC ROM range mirroring end 0x000f(ffff) */
148 pci_write_config16(dev, 0x6a, 0x000f);
149 /* enable LPC ROM range start, 0xfff8(0000): 512KB, 0xfff0(0000): 1MB */
150 pci_write_config16(dev, 0x6c, 0xfff0);
151 /* enable LPC ROM range end at 0xffff(ffff) */
152 pci_write_config16(dev, 0x6e, 0xffff);
155 /* what is its usage? */
156 static u32 get_sbdn(u32 bus)
160 /* Find the device. */
161 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
162 return (dev >> 15) & 0x1f;
165 static u8 dual_core(void)
167 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
171 * RPR 2.4 C-state and VID/FID change for the K8 platform.
173 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
176 byte = pmio_read(0x9a);
182 pmio_write(0x9a, byte);
184 byte = pmio_read(0x8f);
187 pmio_write(0x8f, byte);
189 pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */
190 pmio_write(0x8a, 0x90);
192 pmio_write(0x88, 0x10);
194 byte = pmio_read(0x7c);
196 pmio_write(0x7c, byte);
198 /*Must be 0 for K8 platform.*/
199 byte = pmio_read(0x68);
201 pmio_write(0x68, byte);
202 /*Must be 0 for K8 platform.*/
203 byte = pmio_read(0x8d);
205 pmio_write(0x8d, byte);
207 byte = pmio_read(0x61);
209 pmio_write(0x61, byte);
211 byte = pmio_read(0x42);
213 pmio_write(0x42, byte);
215 pmio_write(0x89, 0x10);
218 void hard_reset(void)
227 void soft_reset(void)
234 void sb700_pci_port80(void)
240 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
242 /* Chip Control: Enable subtractive decoding */
243 byte = pci_read_config8(dev, 0x40);
245 pci_write_config8(dev, 0x40, byte);
247 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
248 byte = pci_read_config8(dev, 0x4B);
250 pci_write_config8(dev, 0x4B, byte);
252 /* The same IO Base and IO Limit here is meaningful because we set the
253 * bridge to be subtractive. During early setup stage, we have to make
254 * sure that data can go through port 0x80.
256 /* IO Base: 0xf000 */
257 byte = pci_read_config8(dev, 0x1C);
259 pci_write_config8(dev, 0x1C, byte);
261 /* IO Limit: 0xf000 */
262 byte = pci_read_config8(dev, 0x1D);
264 pci_write_config8(dev, 0x1D, byte);
266 /* PCI Command: Enable IO response */
267 byte = pci_read_config8(dev, 0x04);
269 pci_write_config8(dev, 0x04, byte);
272 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
274 byte = pci_read_config8(dev, 0x4A);
275 byte &= ~(1 << 5); /* disable lpc port 80 */
276 pci_write_config8(dev, 0x4A, byte);
279 void sb700_lpc_port80(void)
285 /* Enable LPC controller */
286 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
287 reg32 = pci_read_config32(dev, 0x64);
288 reg32 |= 0x00100000; /* lpcEnable */
289 pci_write_config32(dev, 0x64, reg32);
291 /* Enable port 80 LPC decode in pci function 3 configuration space. */
292 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0);
293 byte = pci_read_config8(dev, 0x4a);
294 byte |= 1 << 5; /* enable port 80 */
295 pci_write_config8(dev, 0x4a, byte);
298 /* sbDevicesPorInitTable */
299 static void sb700_devices_por_init(void)
304 printk(BIOS_INFO, "sb700_devices_por_init()\n");
305 /* SMBus Device, BDF:0-20-0 */
306 printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n");
307 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
309 if (dev == PCI_DEV_INVALID) {
310 die("SMBUS controller not found\n");
313 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
314 set_sb700_revision());
316 /* sbPorAtStartOfTblCfg */
317 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
318 * This is an I/O address. The I/O address must be on 16-byte boundry. */
319 pci_write_config32(dev, 0xf0, AB_INDX);
321 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
322 /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */
323 axcfg_reg(0x04, 1 << 2, 1 << 2);
324 axindxc_reg(0x21, 0xff, 0);
326 /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */
327 axindxc_reg(0x10, 1 << 9, 1 << 9);
328 /* END of sbPorAtStartOfTblCfg */
330 /* sbDevicesPorInitTables */
331 /* set smbus iobase */
332 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
334 /* enable smbus controller interface */
335 byte = pci_read_config8(dev, 0xd2);
337 pci_write_config8(dev, 0xd2, byte);
340 pci_write_config8(dev, 0x40, 0x44);
342 /* Enable ISA Address 0-960K decoding */
343 pci_write_config8(dev, 0x48, 0x0f);
345 /* Enable ISA Address 0xC0000-0xDFFFF decode */
346 pci_write_config8(dev, 0x49, 0xff);
348 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
349 byte = pci_read_config8(dev, 0x41);
352 pci_write_config8(dev, 0x41, byte);
354 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
355 /* pci_write_config8(dev, 0x43, 0x1); */
357 /* Disabling Legacy USB Fast SMI# */
358 byte = pci_read_config8(dev, 0x62);
360 pci_write_config8(dev, 0x62, byte);
362 /* Features Enable */
363 pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */
365 /* SerialIrq Control */
366 pci_write_config8(dev, 0x69, 0x90);
368 /* Test Mode, PCIB_SReset_En Mask is set. */
369 pci_write_config8(dev, 0x6c, 0x20);
371 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
372 /*pci_write_config8(dev, 0x79, 0x4F); */
373 pci_write_config8(dev, 0x78, 0xFF);
375 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
376 pci_write_config16(dev, 0x4, 0x0407);
378 /* clear any lingering errors, so the transaction will run */
379 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
381 /* IDE Device, BDF:0-20-1 */
382 printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n");
383 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
384 /* Disable prefetch */
385 byte = pci_read_config8(dev, 0x63);
387 pci_write_config8(dev, 0x63, byte);
389 /* LPC Device, BDF:0-20-3 */
390 printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n");
391 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
393 pci_write_config8(dev, 0x40, 0x04);
395 /* IO Port Decode Enable */
396 pci_write_config8(dev, 0x44, 0xFF);
397 pci_write_config8(dev, 0x45, 0xFF);
398 pci_write_config8(dev, 0x46, 0xC3);
399 pci_write_config8(dev, 0x47, 0xFF);
401 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
402 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
403 * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65).
404 * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/
405 byte = pci_read_config8(dev, 0x48);
406 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
407 byte |= (1 << 3) | (1 << 4); /* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */
408 byte |= 1 << 6; /* enable for RTC I/O range */
409 pci_write_config8(dev, 0x48, byte);
410 pci_write_config8(dev, 0x49, 0xFF);
411 /* Enable 0x480-0x4bf, 0x4700-0x470B */
412 byte = pci_read_config8(dev, 0x4A);
413 byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */
414 pci_write_config8(dev, 0x4A, byte);
416 /* Set LPC ROM size, it has been done in sb700_lpc_init().
417 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
418 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
419 * pci_write_config16(dev, 0x68, 0x000e)
420 * pci_write_config16(dev, 0x6c, 0xfff0);*/
422 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
423 pci_write_config8(dev, 0x7C, 0x05);
425 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
427 printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
428 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
430 /* Arbiter enable. */
431 pci_write_config8(dev, 0x43, 0xff);
433 /* Set PCDMA request into hight priority list. */
434 /* pci_write_config8(dev, 0x49, 0x1) */ ;
436 pci_write_config8(dev, 0x40, 0x26);
438 pci_write_config8(dev, 0x0d, 0x40);
439 pci_write_config8(dev, 0x1b, 0x40);
440 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
441 pci_write_config8(dev, 0x50, 0x01);
443 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
444 printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n");
445 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
447 /*PHY Global Control*/
448 pci_write_config16(dev, 0x86, 0x2C00);
451 /* sbPmioPorInitTable, Pre-initializing PMIO register space
452 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
453 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
454 * The index address is first programmed into IO reg 0xcd6.
455 * Read or write values are accessed through IO reg 0xcd7.
457 static void sb700_pmio_por_init(void)
461 printk(BIOS_INFO, "sb700_pmio_por_init()\n");
462 /* K8KbRstEn, KB_RST# control for K8 system. */
463 byte = pmio_read(0x66);
465 pmio_write(0x66, byte);
467 /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */
468 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) {
469 byte = pmio_read(0x65);
471 pmio_write(0x65, byte);
473 byte = pmio_read(0x75);
476 pmio_write(0x75, byte);
478 byte = pmio_read(0x52);
481 pmio_write(0x52, byte);
483 byte = pmio_read(0xD7);
485 pmio_write(0xD7, byte);
487 byte = pmio_read(0x65);
489 pmio_write(0x65, byte);
491 byte = pmio_read(0x75);
494 pmio_write(0x75, byte);
496 byte = pmio_read(0x52);
499 pmio_write(0x52, byte);
503 /* Watch Dog Timer Control
504 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
505 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
507 pmio_write(0x6c, 0xf0);
508 pmio_write(0x6d, 0x00);
509 pmio_write(0x6e, 0xc0);
510 pmio_write(0x6f, 0xfe);
512 /* rpr2.15: Enabling Spread Spectrum */
513 byte = pmio_read(0x42);
515 pmio_write(0x42, byte);
516 /* TODO: Check if it is necessary. IDE reset */
517 byte = pmio_read(0xB2);
519 pmio_write(0xB2, byte);
523 * Add any south bridge setting.
525 static void sb700_pci_cfg(void)
530 /* SMBus Device, BDF:0-20-0 */
531 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
532 /* Enable watchdog decode timer */
533 byte = pci_read_config8(dev, 0x41);
535 pci_write_config8(dev, 0x41, byte);
537 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
538 * generated PCIRST#. */
539 byte = pmio_read(0x65);
541 pmio_write(0x65, byte);
543 /* IDE Device, BDF:0-20-1 */
544 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
545 /* Enable IDE Explicit prefetch, 0x63[0] clear */
546 byte = pci_read_config8(dev, 0x63);
548 pci_write_config8(dev, 0x63, byte);
550 /* LPC Device, BDF:0-20-3 */
551 /* The code below is ported from old chipset. It is not
552 * metioned in RPR. But I keep them. The registers and the
553 * comments are compatible. */
554 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
555 /* Enabling LPC DMA function. */
556 byte = pci_read_config8(dev, 0x40);
558 pci_write_config8(dev, 0x40, byte);
559 /* Disabling LPC TimeOut. 0x48[7] clear. */
560 byte = pci_read_config8(dev, 0x48);
562 pci_write_config8(dev, 0x48, byte);
563 /* Disabling LPC MSI Capability, 0x78[1] clear. */
564 byte = pci_read_config8(dev, 0x78);
566 pci_write_config8(dev, 0x78, byte);
568 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
569 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
570 /* rpr7.12 SATA MSI and D3 Power State Capability. */
571 byte = pci_read_config8(dev, 0x40);
573 pci_write_config8(dev, 0x40, byte);
574 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12)
575 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
577 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
579 pci_write_config8(dev, 0x40, byte);
584 static void sb700_por_init(void)
586 /* sbDevicesPorInitTable + sbK8PorInitTable */
587 sb700_devices_por_init();
589 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
590 sb700_pmio_por_init();
594 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
596 static void sb700_before_pci_init(void)
602 * This function should be called after enable_sb700_smbus().
604 static void sb700_early_setup(void)
606 printk(BIOS_INFO, "sb700_early_setup()\n");
610 static int smbus_read_byte(u32 device, u32 address)
612 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);