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_
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 revision 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
95 * This function does not change port 0x80 decoding.
96 * Console output through any port besides 0x3f8 is unsupported.
97 * If you use FWH ROMs, you have to setup IDSEL.
98 ***************************************/
99 static void sb700_lpc_init(void)
105 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */
106 /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
107 * This bit has no meaning if debug strap is not enabled. So if the
108 * board keeps rebooting and the code fails to reach here, we could
109 * disable the debug strap first. */
110 reg32 = pci_read_config32(dev, 0x4C);
112 pci_write_config32(dev, 0x4C, reg32);
114 /* Enable lpc controller */
115 reg32 = pci_read_config32(dev, 0x64);
117 pci_write_config32(dev, 0x64, reg32);
119 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0); /* LPC Controller */
120 /* Decode port 0x3f8-0x3ff (Serial 0) */
121 // XXX Serial port decode on LPC is hardcoded to 0x3f8
122 reg8 = pci_read_config8(dev, 0x44);
124 pci_write_config8(dev, 0x44, reg8);
126 /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
127 reg8 = pci_read_config8(dev, 0x47);
128 reg8 |= (1 << 5) | (1 << 6);
129 pci_write_config8(dev, 0x47, reg8);
131 /* Enable PrefetchEnSPIFromHost to speed up SPI flash read (does not affect LPC) */
132 reg8 = pci_read_config8(dev, 0xbb);
134 pci_write_config8(dev, 0xbb, reg8);
137 reg8 = pci_read_config8(dev, 0x48);
138 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
139 reg8 |= (1 << 1) | (1 << 0);
140 /* Decode port 0x70-0x73 (RTC) */
142 pci_write_config8(dev, 0x48, reg8);
145 /* what is its usage? */
146 static u32 get_sbdn(u32 bus)
150 /* Find the device. */
151 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
152 return (dev >> 15) & 0x1f;
155 static u8 dual_core(void)
157 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
161 * RPR 2.4 C-state and VID/FID change for the K8 platform.
163 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
166 byte = pmio_read(0x9a);
172 pmio_write(0x9a, byte);
174 byte = pmio_read(0x8f);
177 pmio_write(0x8f, byte);
179 pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */
180 pmio_write(0x8a, 0x90);
182 pmio_write(0x88, 0x10);
184 byte = pmio_read(0x7c);
186 pmio_write(0x7c, byte);
188 /* Must be 0 for K8 platform. */
189 byte = pmio_read(0x68);
191 pmio_write(0x68, byte);
192 /* Must be 0 for K8 platform. */
193 byte = pmio_read(0x8d);
195 pmio_write(0x8d, byte);
197 byte = pmio_read(0x61);
199 pmio_write(0x61, byte);
201 byte = pmio_read(0x42);
203 pmio_write(0x42, byte);
205 pmio_write(0x89, 0x10);
208 void hard_reset(void)
217 void soft_reset(void)
224 void sb700_pci_port80(void)
230 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
232 /* Chip Control: Enable subtractive decoding */
233 byte = pci_read_config8(dev, 0x40);
235 pci_write_config8(dev, 0x40, byte);
237 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
238 byte = pci_read_config8(dev, 0x4B);
240 pci_write_config8(dev, 0x4B, byte);
242 /* The same IO Base and IO Limit here is meaningful because we set the
243 * bridge to be subtractive. During early setup stage, we have to make
244 * sure that data can go through port 0x80.
246 /* IO Base: 0xf000 */
247 byte = pci_read_config8(dev, 0x1C);
249 pci_write_config8(dev, 0x1C, byte);
251 /* IO Limit: 0xf000 */
252 byte = pci_read_config8(dev, 0x1D);
254 pci_write_config8(dev, 0x1D, byte);
256 /* PCI Command: Enable IO response */
257 byte = pci_read_config8(dev, 0x04);
259 pci_write_config8(dev, 0x04, byte);
262 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
264 byte = pci_read_config8(dev, 0x4A);
265 byte &= ~(1 << 5); /* disable lpc port 80 */
266 pci_write_config8(dev, 0x4A, byte);
269 void sb700_lpc_port80(void)
275 /* Enable LPC controller */
276 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
277 reg32 = pci_read_config32(dev, 0x64);
278 reg32 |= 0x00100000; /* lpcEnable */
279 pci_write_config32(dev, 0x64, reg32);
281 /* Enable port 80 LPC decode in pci function 3 configuration space. */
282 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0);
283 byte = pci_read_config8(dev, 0x4a);
284 byte |= 1 << 5; /* enable port 80 */
285 pci_write_config8(dev, 0x4a, byte);
288 /* sbDevicesPorInitTable */
289 static void sb700_devices_por_init(void)
294 printk(BIOS_INFO, "sb700_devices_por_init()\n");
295 /* SMBus Device, BDF:0-20-0 */
296 printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n");
297 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
299 if (dev == PCI_DEV_INVALID) {
300 die("SMBUS controller not found\n");
303 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
304 set_sb700_revision());
306 /* sbPorAtStartOfTblCfg */
307 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
308 * This is an I/O address. The I/O address must be on 16-byte boundry. */
309 pci_write_config32(dev, 0xf0, AB_INDX);
311 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
312 /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */
313 axcfg_reg(0x04, 1 << 2, 1 << 2);
314 axindxc_reg(0x21, 0xff, 0);
316 /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */
317 axindxc_reg(0x10, 1 << 9, 1 << 9);
318 /* END of sbPorAtStartOfTblCfg */
320 /* sbDevicesPorInitTables */
321 /* set smbus iobase */
322 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
324 /* enable smbus controller interface */
325 byte = pci_read_config8(dev, 0xd2);
327 pci_write_config8(dev, 0xd2, byte);
330 pci_write_config8(dev, 0x40, 0x44);
332 /* Enable ISA Address 0-960K decoding */
333 pci_write_config8(dev, 0x48, 0x0f);
335 /* Enable ISA Address 0xC0000-0xDFFFF decode */
336 pci_write_config8(dev, 0x49, 0xff);
338 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
339 byte = pci_read_config8(dev, 0x41);
342 pci_write_config8(dev, 0x41, byte);
344 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
345 /* pci_write_config8(dev, 0x43, 0x1); */
347 /* Disabling Legacy USB Fast SMI# */
348 byte = pci_read_config8(dev, 0x62);
350 pci_write_config8(dev, 0x62, byte);
352 /* Features Enable */
353 pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */
355 /* SerialIrq Control */
356 pci_write_config8(dev, 0x69, 0x90);
358 /* Test Mode, PCIB_SReset_En Mask is set. */
359 pci_write_config8(dev, 0x6c, 0x20);
361 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
362 /*pci_write_config8(dev, 0x79, 0x4F); */
363 pci_write_config8(dev, 0x78, 0xFF);
365 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
366 pci_write_config16(dev, 0x4, 0x0407);
368 /* clear any lingering errors, so the transaction will run */
369 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
371 /* IDE Device, BDF:0-20-1 */
372 printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n");
373 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
374 /* Disable prefetch */
375 byte = pci_read_config8(dev, 0x63);
377 pci_write_config8(dev, 0x63, byte);
379 /* LPC Device, BDF:0-20-3 */
380 printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n");
381 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
383 pci_write_config8(dev, 0x40, 0x04);
385 /* IO Port Decode Enable */
386 pci_write_config8(dev, 0x44, 0xFF);
387 pci_write_config8(dev, 0x45, 0xFF);
388 pci_write_config8(dev, 0x46, 0xC3);
389 pci_write_config8(dev, 0x47, 0xFF);
391 // TODO: This has already been done(?)
392 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
393 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
394 * Alternate Super I/O Configuration Port (4e/4f), Wide Generic IO Port (64/65). */
395 byte = pci_read_config8(dev, 0x48);
396 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
397 byte |= 1 << 6; /* enable for RTC I/O range */
398 pci_write_config8(dev, 0x48, byte);
399 pci_write_config8(dev, 0x49, 0xFF);
400 /* Enable 0x480-0x4bf, 0x4700-0x470B */
401 byte = pci_read_config8(dev, 0x4A);
402 byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */
403 pci_write_config8(dev, 0x4A, byte);
405 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
406 pci_write_config8(dev, 0x7C, 0x05);
408 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
410 printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
411 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
413 /* Arbiter enable. */
414 pci_write_config8(dev, 0x43, 0xff);
416 /* Set PCDMA request into hight priority list. */
417 /* pci_write_config8(dev, 0x49, 0x1) */ ;
419 pci_write_config8(dev, 0x40, 0x26);
421 pci_write_config8(dev, 0x0d, 0x40);
422 pci_write_config8(dev, 0x1b, 0x40);
423 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
424 pci_write_config8(dev, 0x50, 0x01);
426 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
427 printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n");
428 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
430 /*PHY Global Control*/
431 pci_write_config16(dev, 0x86, 0x2C00);
434 /* sbPmioPorInitTable, Pre-initializing PMIO register space
435 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
436 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
437 * The index address is first programmed into IO reg 0xcd6.
438 * Read or write values are accessed through IO reg 0xcd7.
440 static void sb700_pmio_por_init(void)
444 printk(BIOS_INFO, "sb700_pmio_por_init()\n");
445 /* K8KbRstEn, KB_RST# control for K8 system. */
446 byte = pmio_read(0x66);
448 pmio_write(0x66, byte);
450 /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */
451 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) {
452 byte = pmio_read(0x65);
454 pmio_write(0x65, byte);
456 byte = pmio_read(0x75);
459 pmio_write(0x75, byte);
461 byte = pmio_read(0x52);
464 pmio_write(0x52, byte);
466 byte = pmio_read(0xD7);
468 pmio_write(0xD7, byte);
470 byte = pmio_read(0x65);
472 pmio_write(0x65, byte);
474 byte = pmio_read(0x75);
477 pmio_write(0x75, byte);
479 byte = pmio_read(0x52);
482 pmio_write(0x52, byte);
486 /* Watch Dog Timer Control
487 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
488 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
490 pmio_write(0x6c, 0xf0);
491 pmio_write(0x6d, 0x00);
492 pmio_write(0x6e, 0xc0);
493 pmio_write(0x6f, 0xfe);
495 /* rpr2.15: Enabling Spread Spectrum */
496 byte = pmio_read(0x42);
498 pmio_write(0x42, byte);
499 /* TODO: Check if it is necessary. IDE reset */
500 byte = pmio_read(0xB2);
502 pmio_write(0xB2, byte);
506 * Add any south bridge setting.
508 static void sb700_pci_cfg(void)
513 /* SMBus Device, BDF:0-20-0 */
514 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
515 /* Enable watchdog decode timer */
516 byte = pci_read_config8(dev, 0x41);
518 pci_write_config8(dev, 0x41, byte);
520 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
521 * generated PCIRST#. */
522 byte = pmio_read(0x65);
524 pmio_write(0x65, byte);
526 /* IDE Device, BDF:0-20-1 */
527 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
528 /* Enable IDE Explicit prefetch, 0x63[0] clear */
529 byte = pci_read_config8(dev, 0x63);
531 pci_write_config8(dev, 0x63, byte);
533 /* LPC Device, BDF:0-20-3 */
534 /* The code below is ported from old chipset. It is not
535 * mentioned in RPR. But I keep them. The registers and the
536 * comments are compatible. */
537 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
538 /* Enabling LPC DMA function. */
539 byte = pci_read_config8(dev, 0x40);
541 pci_write_config8(dev, 0x40, byte);
542 /* Disabling LPC TimeOut. 0x48[7] clear. */
543 byte = pci_read_config8(dev, 0x48);
545 pci_write_config8(dev, 0x48, byte);
546 /* Disabling LPC MSI Capability, 0x78[1] clear. */
547 byte = pci_read_config8(dev, 0x78);
549 pci_write_config8(dev, 0x78, byte);
551 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
552 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
553 /* rpr7.12 SATA MSI and D3 Power State Capability. */
554 byte = pci_read_config8(dev, 0x40);
556 pci_write_config8(dev, 0x40, byte);
557 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12)
558 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
560 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
562 pci_write_config8(dev, 0x40, byte);
567 static void sb700_por_init(void)
569 /* sbDevicesPorInitTable + sbK8PorInitTable */
570 sb700_devices_por_init();
572 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
573 sb700_pmio_por_init();
577 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
579 static void sb700_before_pci_init(void)
585 * This function should be called after enable_sb700_smbus().
587 static void sb700_early_setup(void)
589 printk(BIOS_INFO, "sb700_early_setup()\n");
593 static int smbus_read_byte(u32 device, u32 address)
595 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);