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
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 /* Enable PrefetchEnSPIFromHost to speed up SPI flash read (does not affect LPC) */
133 reg8 = pci_read_config8(dev, 0xbb);
135 pci_write_config8(dev, 0xbb, reg8);
137 /* SuperIO, LPC ROM */
138 reg8 = pci_read_config8(dev, 0x48);
139 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
140 reg8 |= (1 << 1) | (1 << 0);
141 /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
142 reg8 |= (1 << 3) | (1 << 4);
143 /* Decode port 0x70-0x73 (RTC) */
145 pci_write_config8(dev, 0x48, reg8);
147 /* hardware should enable LPC ROM by pin straps */
148 /* ROM access at 0xFFF80000/0xFFF00000 - 0xFFFFFFFF */
149 /* See detail in 43366_sb700_bdg_nda_1.01.pdf page 17. */
150 /* enable LPC ROM range mirroring start 0x000e(0000) */
151 pci_write_config16(dev, 0x68, 0x000e);
152 /* enable LPC ROM range mirroring end 0x000f(ffff) */
153 pci_write_config16(dev, 0x6a, 0x000f);
154 /* enable LPC ROM range start, 0xfff8(0000): 512KB, 0xfff0(0000): 1MB */
155 pci_write_config16(dev, 0x6c, 0xfff0);
156 /* enable LPC ROM range end at 0xffff(ffff) */
157 pci_write_config16(dev, 0x6e, 0xffff);
160 /* what is its usage? */
161 static u32 get_sbdn(u32 bus)
165 /* Find the device. */
166 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
167 return (dev >> 15) & 0x1f;
170 static u8 dual_core(void)
172 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
176 * RPR 2.4 C-state and VID/FID change for the K8 platform.
178 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
181 byte = pmio_read(0x9a);
187 pmio_write(0x9a, byte);
189 byte = pmio_read(0x8f);
192 pmio_write(0x8f, byte);
194 pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */
195 pmio_write(0x8a, 0x90);
197 pmio_write(0x88, 0x10);
199 byte = pmio_read(0x7c);
201 pmio_write(0x7c, byte);
203 /* Must be 0 for K8 platform. */
204 byte = pmio_read(0x68);
206 pmio_write(0x68, byte);
207 /* Must be 0 for K8 platform. */
208 byte = pmio_read(0x8d);
210 pmio_write(0x8d, byte);
212 byte = pmio_read(0x61);
214 pmio_write(0x61, byte);
216 byte = pmio_read(0x42);
218 pmio_write(0x42, byte);
220 pmio_write(0x89, 0x10);
223 void hard_reset(void)
232 void soft_reset(void)
239 void sb700_pci_port80(void)
245 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
247 /* Chip Control: Enable subtractive decoding */
248 byte = pci_read_config8(dev, 0x40);
250 pci_write_config8(dev, 0x40, byte);
252 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
253 byte = pci_read_config8(dev, 0x4B);
255 pci_write_config8(dev, 0x4B, byte);
257 /* The same IO Base and IO Limit here is meaningful because we set the
258 * bridge to be subtractive. During early setup stage, we have to make
259 * sure that data can go through port 0x80.
261 /* IO Base: 0xf000 */
262 byte = pci_read_config8(dev, 0x1C);
264 pci_write_config8(dev, 0x1C, byte);
266 /* IO Limit: 0xf000 */
267 byte = pci_read_config8(dev, 0x1D);
269 pci_write_config8(dev, 0x1D, byte);
271 /* PCI Command: Enable IO response */
272 byte = pci_read_config8(dev, 0x04);
274 pci_write_config8(dev, 0x04, byte);
277 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
279 byte = pci_read_config8(dev, 0x4A);
280 byte &= ~(1 << 5); /* disable lpc port 80 */
281 pci_write_config8(dev, 0x4A, byte);
284 void sb700_lpc_port80(void)
290 /* Enable LPC controller */
291 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
292 reg32 = pci_read_config32(dev, 0x64);
293 reg32 |= 0x00100000; /* lpcEnable */
294 pci_write_config32(dev, 0x64, reg32);
296 /* Enable port 80 LPC decode in pci function 3 configuration space. */
297 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0);
298 byte = pci_read_config8(dev, 0x4a);
299 byte |= 1 << 5; /* enable port 80 */
300 pci_write_config8(dev, 0x4a, byte);
303 /* sbDevicesPorInitTable */
304 static void sb700_devices_por_init(void)
309 printk(BIOS_INFO, "sb700_devices_por_init()\n");
310 /* SMBus Device, BDF:0-20-0 */
311 printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n");
312 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
314 if (dev == PCI_DEV_INVALID) {
315 die("SMBUS controller not found\n");
318 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
319 set_sb700_revision());
321 /* sbPorAtStartOfTblCfg */
322 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
323 * This is an I/O address. The I/O address must be on 16-byte boundry. */
324 pci_write_config32(dev, 0xf0, AB_INDX);
326 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
327 /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */
328 axcfg_reg(0x04, 1 << 2, 1 << 2);
329 axindxc_reg(0x21, 0xff, 0);
331 /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */
332 axindxc_reg(0x10, 1 << 9, 1 << 9);
333 /* END of sbPorAtStartOfTblCfg */
335 /* sbDevicesPorInitTables */
336 /* set smbus iobase */
337 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
339 /* enable smbus controller interface */
340 byte = pci_read_config8(dev, 0xd2);
342 pci_write_config8(dev, 0xd2, byte);
345 pci_write_config8(dev, 0x40, 0x44);
347 /* Enable ISA Address 0-960K decoding */
348 pci_write_config8(dev, 0x48, 0x0f);
350 /* Enable ISA Address 0xC0000-0xDFFFF decode */
351 pci_write_config8(dev, 0x49, 0xff);
353 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
354 byte = pci_read_config8(dev, 0x41);
357 pci_write_config8(dev, 0x41, byte);
359 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
360 /* pci_write_config8(dev, 0x43, 0x1); */
362 /* Disabling Legacy USB Fast SMI# */
363 byte = pci_read_config8(dev, 0x62);
365 pci_write_config8(dev, 0x62, byte);
367 /* Features Enable */
368 pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */
370 /* SerialIrq Control */
371 pci_write_config8(dev, 0x69, 0x90);
373 /* Test Mode, PCIB_SReset_En Mask is set. */
374 pci_write_config8(dev, 0x6c, 0x20);
376 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
377 /*pci_write_config8(dev, 0x79, 0x4F); */
378 pci_write_config8(dev, 0x78, 0xFF);
380 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
381 pci_write_config16(dev, 0x4, 0x0407);
383 /* clear any lingering errors, so the transaction will run */
384 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
386 /* IDE Device, BDF:0-20-1 */
387 printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n");
388 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
389 /* Disable prefetch */
390 byte = pci_read_config8(dev, 0x63);
392 pci_write_config8(dev, 0x63, byte);
394 /* LPC Device, BDF:0-20-3 */
395 printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n");
396 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
398 pci_write_config8(dev, 0x40, 0x04);
400 /* IO Port Decode Enable */
401 pci_write_config8(dev, 0x44, 0xFF);
402 pci_write_config8(dev, 0x45, 0xFF);
403 pci_write_config8(dev, 0x46, 0xC3);
404 pci_write_config8(dev, 0x47, 0xFF);
406 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
407 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
408 * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65).
409 * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/
410 byte = pci_read_config8(dev, 0x48);
411 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
412 byte |= (1 << 3) | (1 << 4); /* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */
413 byte |= 1 << 6; /* enable for RTC I/O range */
414 pci_write_config8(dev, 0x48, byte);
415 pci_write_config8(dev, 0x49, 0xFF);
416 /* Enable 0x480-0x4bf, 0x4700-0x470B */
417 byte = pci_read_config8(dev, 0x4A);
418 byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */
419 pci_write_config8(dev, 0x4A, byte);
421 /* Set LPC ROM size, it has been done in sb700_lpc_init().
422 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
423 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
424 * pci_write_config16(dev, 0x68, 0x000e)
425 * pci_write_config16(dev, 0x6c, 0xfff0);*/
427 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
428 pci_write_config8(dev, 0x7C, 0x05);
430 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
432 printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
433 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
435 /* Arbiter enable. */
436 pci_write_config8(dev, 0x43, 0xff);
438 /* Set PCDMA request into hight priority list. */
439 /* pci_write_config8(dev, 0x49, 0x1) */ ;
441 pci_write_config8(dev, 0x40, 0x26);
443 pci_write_config8(dev, 0x0d, 0x40);
444 pci_write_config8(dev, 0x1b, 0x40);
445 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
446 pci_write_config8(dev, 0x50, 0x01);
448 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
449 printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n");
450 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
452 /*PHY Global Control*/
453 pci_write_config16(dev, 0x86, 0x2C00);
456 /* sbPmioPorInitTable, Pre-initializing PMIO register space
457 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
458 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
459 * The index address is first programmed into IO reg 0xcd6.
460 * Read or write values are accessed through IO reg 0xcd7.
462 static void sb700_pmio_por_init(void)
466 printk(BIOS_INFO, "sb700_pmio_por_init()\n");
467 /* K8KbRstEn, KB_RST# control for K8 system. */
468 byte = pmio_read(0x66);
470 pmio_write(0x66, byte);
472 /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */
473 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) {
474 byte = pmio_read(0x65);
476 pmio_write(0x65, byte);
478 byte = pmio_read(0x75);
481 pmio_write(0x75, byte);
483 byte = pmio_read(0x52);
486 pmio_write(0x52, byte);
488 byte = pmio_read(0xD7);
490 pmio_write(0xD7, byte);
492 byte = pmio_read(0x65);
494 pmio_write(0x65, byte);
496 byte = pmio_read(0x75);
499 pmio_write(0x75, byte);
501 byte = pmio_read(0x52);
504 pmio_write(0x52, byte);
508 /* Watch Dog Timer Control
509 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
510 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
512 pmio_write(0x6c, 0xf0);
513 pmio_write(0x6d, 0x00);
514 pmio_write(0x6e, 0xc0);
515 pmio_write(0x6f, 0xfe);
517 /* rpr2.15: Enabling Spread Spectrum */
518 byte = pmio_read(0x42);
520 pmio_write(0x42, byte);
521 /* TODO: Check if it is necessary. IDE reset */
522 byte = pmio_read(0xB2);
524 pmio_write(0xB2, byte);
528 * Add any south bridge setting.
530 static void sb700_pci_cfg(void)
535 /* SMBus Device, BDF:0-20-0 */
536 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
537 /* Enable watchdog decode timer */
538 byte = pci_read_config8(dev, 0x41);
540 pci_write_config8(dev, 0x41, byte);
542 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
543 * generated PCIRST#. */
544 byte = pmio_read(0x65);
546 pmio_write(0x65, byte);
548 /* IDE Device, BDF:0-20-1 */
549 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
550 /* Enable IDE Explicit prefetch, 0x63[0] clear */
551 byte = pci_read_config8(dev, 0x63);
553 pci_write_config8(dev, 0x63, byte);
555 /* LPC Device, BDF:0-20-3 */
556 /* The code below is ported from old chipset. It is not
557 * mentioned in RPR. But I keep them. The registers and the
558 * comments are compatible. */
559 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
560 /* Enabling LPC DMA function. */
561 byte = pci_read_config8(dev, 0x40);
563 pci_write_config8(dev, 0x40, byte);
564 /* Disabling LPC TimeOut. 0x48[7] clear. */
565 byte = pci_read_config8(dev, 0x48);
567 pci_write_config8(dev, 0x48, byte);
568 /* Disabling LPC MSI Capability, 0x78[1] clear. */
569 byte = pci_read_config8(dev, 0x78);
571 pci_write_config8(dev, 0x78, byte);
573 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
574 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
575 /* rpr7.12 SATA MSI and D3 Power State Capability. */
576 byte = pci_read_config8(dev, 0x40);
578 pci_write_config8(dev, 0x40, byte);
579 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12)
580 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
582 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
584 pci_write_config8(dev, 0x40, byte);
589 static void sb700_por_init(void)
591 /* sbDevicesPorInitTable + sbK8PorInitTable */
592 sb700_devices_por_init();
594 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
595 sb700_pmio_por_init();
599 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
601 static void sb700_before_pci_init(void)
607 * This function should be called after enable_sb700_smbus().
609 static void sb700_early_setup(void)
611 printk(BIOS_INFO, "sb700_early_setup()\n");
615 static int smbus_read_byte(u32 device, u32 address)
617 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);