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_
25 #include "sb700_smbus.c"
27 #define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */
30 static void pmio_write(u8 reg, u8 value)
33 outb(value, PM_INDEX + 1);
36 static u8 pmio_read(u8 reg)
39 return inb(PM_INDEX + 1);
42 /* RPR 2.28 Get SB ASIC Revision.*/
43 static u8 set_sb700_revision(void)
46 u8 rev_id, enable_14Mhz, byte;
49 /* if (rev != 0) return rev; */
51 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
53 if (dev == PCI_DEV_INVALID) {
54 die("SMBUS controller not found\r\n");
57 rev_id = pci_read_config8(dev, 0x08);
60 enable_14Mhz = (pmio_read(0x53) >> 6) & 1;
61 if (enable_14Mhz == 0x0)
63 else if (enable_14Mhz == 0x1) {
64 /* This happens, if does, only once. So later if we need to get
65 * the rivision ID, we don't have to make such a big function.
66 * We just get reg 0x8 in smbus dev. 0x39 is A11, 0x3A is A12. */
68 byte = pci_read_config8(dev, 0x40);
70 pci_write_config8(dev, 0x40, byte);
72 pci_write_config8(dev, 0x08, 0x3A); /* Change 0x39 to 0x3A. */
75 pci_write_config8(dev, 0x40, byte);
77 } else if (rev_id == 0x3A) { /* A12 will be 0x3A after BIOS is initialized */
79 } else if (rev_id == 0x3C) {
81 } else if (rev_id == 0x3D) {
84 die("It is not SB700 or SB710\r\n");
89 /***************************************
90 * Legacy devices are mapped to LPC space.
93 * 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 #warning 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 /* SuperIO, LPC ROM */
132 reg8 = pci_read_config8(dev, 0x48);
133 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
134 reg8 |= (1 << 1) | (1 << 0);
135 /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
136 reg8 |= (1 << 3) | (1 << 4);
137 /* Decode port 0x70-0x73 (RTC) */
139 pci_write_config8(dev, 0x48, reg8);
141 /* hardware should enable LPC ROM by pin straps */
142 /* ROM access at 0xFFF80000/0xFFF00000 - 0xFFFFFFFF */
143 /* See detail in 43366_sb700_bdg_nda_1.01.pdf page 17. */
144 /* enable LPC ROM range mirroring start 0x000e(0000) */
145 pci_write_config16(dev, 0x68, 0x000e);
146 /* enable LPC ROM range mirroring end 0x000f(ffff) */
147 pci_write_config16(dev, 0x6a, 0x000f);
148 /* enable LPC ROM range start, 0xfff8(0000): 512KB, 0xfff0(0000): 1MB */
149 pci_write_config16(dev, 0x6c, 0xfff0);
150 /* enable LPC ROM range end at 0xffff(ffff) */
151 pci_write_config16(dev, 0x6e, 0xffff);
154 /* what is its usage? */
155 static u32 get_sbdn(u32 bus)
159 /* Find the device. */
160 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
161 return (dev >> 15) & 0x1f;
164 static u8 dual_core(void)
166 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
170 * RPR 2.4 C-state and VID/FID change for the K8 platform.
172 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
175 byte = pmio_read(0x9a);
181 pmio_write(0x9a, byte);
183 byte = pmio_read(0x8f);
186 pmio_write(0x8f, byte);
188 pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */
189 pmio_write(0x8a, 0x90);
191 pmio_write(0x88, 0x10);
193 byte = pmio_read(0x7c);
195 pmio_write(0x7c, byte);
197 /*Must be 0 for K8 platform.*/
198 byte = pmio_read(0x68);
200 pmio_write(0x68, byte);
201 /*Must be 0 for K8 platform.*/
202 byte = pmio_read(0x8d);
204 pmio_write(0x8d, byte);
206 byte = pmio_read(0x61);
208 pmio_write(0x61, byte);
210 byte = pmio_read(0x42);
212 pmio_write(0x42, byte);
214 pmio_write(0x89, 0x10);
217 static void hard_reset(void)
226 static void soft_reset(void)
233 static void sb700_pci_port80(void)
239 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
241 /* Chip Control: Enable subtractive decoding */
242 byte = pci_read_config8(dev, 0x40);
244 pci_write_config8(dev, 0x40, byte);
246 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
247 byte = pci_read_config8(dev, 0x4B);
249 pci_write_config8(dev, 0x4B, byte);
251 /* The same IO Base and IO Limit here is meaningful because we set the
252 * bridge to be subtractive. During early setup stage, we have to make
253 * sure that data can go through port 0x80.
255 /* IO Base: 0xf000 */
256 byte = pci_read_config8(dev, 0x1C);
258 pci_write_config8(dev, 0x1C, byte);
260 /* IO Limit: 0xf000 */
261 byte = pci_read_config8(dev, 0x1D);
263 pci_write_config8(dev, 0x1D, byte);
265 /* PCI Command: Enable IO response */
266 byte = pci_read_config8(dev, 0x04);
268 pci_write_config8(dev, 0x04, byte);
271 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
273 byte = pci_read_config8(dev, 0x4A);
274 byte &= ~(1 << 5); /* disable lpc port 80 */
275 pci_write_config8(dev, 0x4A, byte);
278 static void sb700_lpc_port80(void)
284 /* Enable LPC controller */
285 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
286 reg32 = pci_read_config32(dev, 0x64);
287 reg32 |= 0x00100000; /* lpcEnable */
288 pci_write_config32(dev, 0x64, reg32);
290 /* Enable port 80 LPC decode in pci function 3 configuration space. */
291 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0);
292 byte = pci_read_config8(dev, 0x4a);
293 byte |= 1 << 5; /* enable port 80 */
294 pci_write_config8(dev, 0x4a, byte);
297 /* sbDevicesPorInitTable */
298 static void sb700_devices_por_init(void)
303 printk(BIOS_INFO, "sb700_devices_por_init()\n");
304 /* SMBus Device, BDF:0-20-0 */
305 printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n");
306 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
308 if (dev == PCI_DEV_INVALID) {
309 die("SMBUS controller not found\r\n");
312 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\r\n",
313 set_sb700_revision());
315 /* sbPorAtStartOfTblCfg */
316 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
317 * This is an I/O address. The I/O address must be on 16-byte boundry. */
318 pci_write_config32(dev, 0xf0, AB_INDX);
320 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
321 /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */
322 axcfg_reg(0x04, 1 << 2, 1 << 2);
323 axindxc_reg(0x21, 0xff, 0);
325 /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */
326 axindxc_reg(0x10, 1 << 9, 1 << 9);
327 /* END of sbPorAtStartOfTblCfg */
329 /* sbDevicesPorInitTables */
330 /* set smbus iobase */
331 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
333 /* enable smbus controller interface */
334 byte = pci_read_config8(dev, 0xd2);
336 pci_write_config8(dev, 0xd2, byte);
339 pci_write_config8(dev, 0x40, 0x44);
341 /* Enable ISA Address 0-960K decoding */
342 pci_write_config8(dev, 0x48, 0x0f);
344 /* Enable ISA Address 0xC0000-0xDFFFF decode */
345 pci_write_config8(dev, 0x49, 0xff);
347 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
348 byte = pci_read_config8(dev, 0x41);
351 pci_write_config8(dev, 0x41, byte);
353 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
354 /* pci_write_config8(dev, 0x43, 0x1); */
356 /* Disabling Legacy USB Fast SMI# */
357 byte = pci_read_config8(dev, 0x62);
359 pci_write_config8(dev, 0x62, byte);
361 /* Features Enable */
362 pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */
364 /* SerialIrq Control */
365 pci_write_config8(dev, 0x69, 0x90);
367 /* Test Mode, PCIB_SReset_En Mask is set. */
368 pci_write_config8(dev, 0x6c, 0x20);
370 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
371 /*pci_write_config8(dev, 0x79, 0x4F); */
372 pci_write_config8(dev, 0x78, 0xFF);
374 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
375 pci_write_config16(dev, 0x4, 0x0407);
377 /* clear any lingering errors, so the transaction will run */
378 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
380 /* IDE Device, BDF:0-20-1 */
381 printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n");
382 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
383 /* Disable prefetch */
384 byte = pci_read_config8(dev, 0x63);
386 pci_write_config8(dev, 0x63, byte);
388 /* LPC Device, BDF:0-20-3 */
389 printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n");
390 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
392 pci_write_config8(dev, 0x40, 0x04);
394 /* IO Port Decode Enable */
395 pci_write_config8(dev, 0x44, 0xFF);
396 pci_write_config8(dev, 0x45, 0xFF);
397 pci_write_config8(dev, 0x46, 0xC3);
398 pci_write_config8(dev, 0x47, 0xFF);
400 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
401 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
402 * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65).
403 * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/
404 byte = pci_read_config8(dev, 0x48);
405 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
406 byte |= (1 << 3) | (1 << 4); /* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */
407 byte |= 1 << 6; /* enable for RTC I/O range */
408 pci_write_config8(dev, 0x48, byte);
409 pci_write_config8(dev, 0x49, 0xFF);
410 /* Enable 0x480-0x4bf, 0x4700-0x470B */
411 byte = pci_read_config8(dev, 0x4A);
412 byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */
413 pci_write_config8(dev, 0x4A, byte);
415 /* Set LPC ROM size, it has been done in sb700_lpc_init().
416 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
417 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
418 * pci_write_config16(dev, 0x68, 0x000e)
419 * pci_write_config16(dev, 0x6c, 0xfff0);*/
421 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
422 pci_write_config8(dev, 0x7C, 0x05);
424 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
426 printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
427 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
429 /* Arbiter enable. */
430 pci_write_config8(dev, 0x43, 0xff);
432 /* Set PCDMA request into hight priority list. */
433 /* pci_write_config8(dev, 0x49, 0x1) */ ;
435 pci_write_config8(dev, 0x40, 0x26);
437 pci_write_config8(dev, 0x0d, 0x40);
438 pci_write_config8(dev, 0x1b, 0x40);
439 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
440 pci_write_config8(dev, 0x50, 0x01);
442 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
443 printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n");
444 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
446 /*PHY Global Control*/
447 pci_write_config16(dev, 0x86, 0x2C00);
450 /* sbPmioPorInitTable, Pre-initializing PMIO register space
451 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
452 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
453 * The index address is first programmed into IO reg 0xcd6.
454 * Read or write values are accessed through IO reg 0xcd7.
456 static void sb700_pmio_por_init(void)
460 printk(BIOS_INFO, "sb700_pmio_por_init()\n");
461 /* K8KbRstEn, KB_RST# control for K8 system. */
462 byte = pmio_read(0x66);
464 pmio_write(0x66, byte);
466 /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */
467 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) {
468 byte = pmio_read(0x65);
470 pmio_write(0x65, byte);
472 byte = pmio_read(0x75);
475 pmio_write(0x75, byte);
477 byte = pmio_read(0x52);
480 pmio_write(0x52, byte);
482 byte = pmio_read(0xD7);
484 pmio_write(0xD7, byte);
486 byte = pmio_read(0x65);
488 pmio_write(0x65, byte);
490 byte = pmio_read(0x75);
493 pmio_write(0x75, byte);
495 byte = pmio_read(0x52);
498 pmio_write(0x52, byte);
502 /* Watch Dog Timer Control
503 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
504 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
506 pmio_write(0x6c, 0xf0);
507 pmio_write(0x6d, 0x00);
508 pmio_write(0x6e, 0xc0);
509 pmio_write(0x6f, 0xfe);
511 /* rpr2.15: Enabling Spread Spectrum */
512 byte = pmio_read(0x42);
514 pmio_write(0x42, byte);
515 /* TODO: Check if it is necessary. IDE reset */
516 byte = pmio_read(0xB2);
518 pmio_write(0xB2, byte);
522 * Add any south bridge setting.
524 static void sb700_pci_cfg(void)
529 /* SMBus Device, BDF:0-20-0 */
530 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
531 /* Enable watchdog decode timer */
532 byte = pci_read_config8(dev, 0x41);
534 pci_write_config8(dev, 0x41, byte);
536 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
537 * generated PCIRST#. */
538 byte = pmio_read(0x65);
540 pmio_write(0x65, byte);
542 /* IDE Device, BDF:0-20-1 */
543 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
544 /* Enable IDE Explicit prefetch, 0x63[0] clear */
545 byte = pci_read_config8(dev, 0x63);
547 pci_write_config8(dev, 0x63, byte);
549 /* LPC Device, BDF:0-20-3 */
550 /* The code below is ported from old chipset. It is not
551 * metioned in RPR. But I keep them. The registers and the
552 * comments are compatible. */
553 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
554 /* Enabling LPC DMA function. */
555 byte = pci_read_config8(dev, 0x40);
557 pci_write_config8(dev, 0x40, byte);
558 /* Disabling LPC TimeOut. 0x48[7] clear. */
559 byte = pci_read_config8(dev, 0x48);
561 pci_write_config8(dev, 0x48, byte);
562 /* Disabling LPC MSI Capability, 0x78[1] clear. */
563 byte = pci_read_config8(dev, 0x78);
565 pci_write_config8(dev, 0x78, byte);
567 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
568 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
569 /* rpr7.12 SATA MSI and D3 Power State Capability. */
570 byte = pci_read_config8(dev, 0x40);
572 pci_write_config8(dev, 0x40, byte);
573 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12)
574 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
576 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
578 pci_write_config8(dev, 0x40, byte);
583 static void sb700_por_init(void)
585 /* sbDevicesPorInitTable + sbK8PorInitTable */
586 sb700_devices_por_init();
588 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
589 sb700_pmio_por_init();
593 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
595 static void sb700_before_pci_init(void)
601 * This function should be called after enable_sb700_smbus().
603 static void sb700_early_setup(void)
605 printk(BIOS_INFO, "sb700_early_setup()\n");
609 static int smbus_read_byte(u32 device, u32 address)
611 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);