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_
29 #define SMBUS_IO_BASE 0x6000 /* Is it a temporary SMBus I/O base address? */
32 static void pmio_write(u8 reg, u8 value)
35 outb(value, PM_INDEX + 1);
38 static u8 pmio_read(u8 reg)
41 return inb(PM_INDEX + 1);
44 static void sb700_acpi_init(void) {
45 pmio_write(0x20, ACPI_PM_EVT_BLK & 0xFF);
46 pmio_write(0x21, ACPI_PM_EVT_BLK >> 8);
47 pmio_write(0x22, ACPI_PM1_CNT_BLK & 0xFF);
48 pmio_write(0x23, ACPI_PM1_CNT_BLK >> 8);
49 pmio_write(0x24, ACPI_PM_TMR_BLK & 0xFF);
50 pmio_write(0x25, ACPI_PM_TMR_BLK >> 8);
51 pmio_write(0x28, ACPI_GPE0_BLK & 0xFF);
52 pmio_write(0x29, ACPI_GPE0_BLK >> 8);
54 /* CpuControl is in \_PR.CPU0, 6 bytes */
55 pmio_write(0x26, ACPI_CPU_CONTROL & 0xFF);
56 pmio_write(0x27, ACPI_CPU_CONTROL >> 8);
58 pmio_write(0x2A, 0); /* AcpiSmiCmdLo */
59 pmio_write(0x2B, 0); /* AcpiSmiCmdHi */
61 pmio_write(0x2C, ACPI_PMA_CNT_BLK & 0xFF);
62 pmio_write(0x2D, ACPI_PMA_CNT_BLK >> 8);
64 pmio_write(0x0E, 1<<3 | 0<<2); /* AcpiDecodeEnable, When set, SB uses
65 * the contents of the PM registers at
66 * index 20-2B to decode ACPI I/O address.
67 * AcpiSmiEn & SmiCmdEn*/
68 pmio_write(0x10, 1<<1 | 1<<3| 1<<5); /* RTC_En_En, TMR_En_En, GBL_EN_EN */
71 /* RPR 2.28: Get SB ASIC Revision. */
72 static u8 set_sb700_revision(void)
75 u8 rev_id, enable_14Mhz, byte;
78 /* if (rev != 0) return rev; */
80 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
82 if (dev == PCI_DEV_INVALID) {
83 die("SMBUS controller not found\n");
86 rev_id = pci_read_config8(dev, 0x08);
89 enable_14Mhz = (pmio_read(0x53) >> 6) & 1;
90 if (enable_14Mhz == 0x0)
92 else if (enable_14Mhz == 0x1) {
93 /* This happens, if does, only once. So later if we need to get
94 * the revision ID, we don't have to make such a big function.
95 * We just get reg 0x8 in smbus dev. 0x39 is A11, 0x3A is A12. */
97 byte = pci_read_config8(dev, 0x40);
99 pci_write_config8(dev, 0x40, byte);
101 pci_write_config8(dev, 0x08, 0x3A); /* Change 0x39 to 0x3A. */
104 pci_write_config8(dev, 0x40, byte);
106 } else if (rev_id == 0x3A) { /* A12 will be 0x3A after BIOS is initialized */
108 } else if (rev_id == 0x3C) {
110 } else if (rev_id == 0x3D) {
113 die("It is not SB700 or SB710\n");
118 /***************************************
119 * Legacy devices are mapped to LPC space.
122 * ACPI Micro-controller port
123 * This function does not change port 0x80 decoding.
124 * Console output through any port besides 0x3f8 is unsupported.
125 * If you use FWH ROMs, you have to setup IDSEL.
126 ***************************************/
127 static void sb700_lpc_init(void)
133 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */
134 /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
135 * This bit has no meaning if debug strap is not enabled. So if the
136 * board keeps rebooting and the code fails to reach here, we could
137 * disable the debug strap first. */
138 reg32 = pci_read_config32(dev, 0x4C);
140 pci_write_config32(dev, 0x4C, reg32);
142 /* Enable lpc controller */
143 reg32 = pci_read_config32(dev, 0x64);
145 pci_write_config32(dev, 0x64, reg32);
147 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0); /* LPC Controller */
148 /* Decode port 0x3f8-0x3ff (Serial 0) */
149 // XXX Serial port decode on LPC is hardcoded to 0x3f8
150 reg8 = pci_read_config8(dev, 0x44);
152 pci_write_config8(dev, 0x44, reg8);
154 /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
155 reg8 = pci_read_config8(dev, 0x47);
156 reg8 |= (1 << 5) | (1 << 6);
157 pci_write_config8(dev, 0x47, reg8);
159 /* Enable PrefetchEnSPIFromHost to speed up SPI flash read (does not affect LPC) */
160 reg8 = pci_read_config8(dev, 0xbb);
162 pci_write_config8(dev, 0xbb, reg8);
165 reg8 = pci_read_config8(dev, 0x48);
166 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
167 reg8 |= (1 << 1) | (1 << 0);
168 /* Decode port 0x70-0x73 (RTC) */
170 pci_write_config8(dev, 0x48, reg8);
173 /* what is its usage? */
174 static u32 get_sbdn(u32 bus)
178 /* Find the device. */
179 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
180 return (dev >> 15) & 0x1f;
183 static u8 dual_core(void)
185 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
189 * RPR 2.4 C-state and VID/FID change for the K8 platform.
191 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
194 byte = pmio_read(0x9a);
200 pmio_write(0x9a, byte);
202 byte = pmio_read(0x8f);
205 pmio_write(0x8f, byte);
207 pmio_write(0x8b, 0x01); /* TODO: if the HT Link is 200 MHz, it is 0x0A. It doesnt often happen. */
208 pmio_write(0x8a, 0x90);
210 pmio_write(0x88, 0x10);
212 byte = pmio_read(0x7c);
214 pmio_write(0x7c, byte);
216 /* Must be 0 for K8 platform. */
217 byte = pmio_read(0x68);
219 pmio_write(0x68, byte);
220 /* Must be 0 for K8 platform. */
221 byte = pmio_read(0x8d);
223 pmio_write(0x8d, byte);
225 byte = pmio_read(0x61);
227 pmio_write(0x61, byte);
229 byte = pmio_read(0x42);
231 pmio_write(0x42, byte);
233 pmio_write(0x89, 0x10);
236 void hard_reset(void)
245 void soft_reset(void)
252 void sb700_pci_port80(void)
258 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
260 /* Chip Control: Enable subtractive decoding */
261 byte = pci_read_config8(dev, 0x40);
263 pci_write_config8(dev, 0x40, byte);
265 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
266 byte = pci_read_config8(dev, 0x4B);
268 pci_write_config8(dev, 0x4B, byte);
270 /* The same IO Base and IO Limit here is meaningful because we set the
271 * bridge to be subtractive. During early setup stage, we have to make
272 * sure that data can go through port 0x80.
274 /* IO Base: 0xf000 */
275 byte = pci_read_config8(dev, 0x1C);
277 pci_write_config8(dev, 0x1C, byte);
279 /* IO Limit: 0xf000 */
280 byte = pci_read_config8(dev, 0x1D);
282 pci_write_config8(dev, 0x1D, byte);
284 /* PCI Command: Enable IO response */
285 byte = pci_read_config8(dev, 0x04);
287 pci_write_config8(dev, 0x04, byte);
290 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
292 byte = pci_read_config8(dev, 0x4A);
293 byte &= ~(1 << 5); /* disable lpc port 80 */
294 pci_write_config8(dev, 0x4A, byte);
297 void sb700_lpc_port80(void)
303 /* Enable LPC controller */
304 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
305 reg32 = pci_read_config32(dev, 0x64);
306 reg32 |= 0x00100000; /* lpcEnable */
307 pci_write_config32(dev, 0x64, reg32);
309 /* Enable port 80 LPC decode in pci function 3 configuration space. */
310 dev = pci_locate_device(PCI_ID(0x1002, 0x439d), 0);
311 byte = pci_read_config8(dev, 0x4a);
312 byte |= 1 << 5; /* enable port 80 */
313 pci_write_config8(dev, 0x4a, byte);
316 /* sbDevicesPorInitTable */
317 static void sb700_devices_por_init(void)
322 printk(BIOS_INFO, "sb700_devices_por_init()\n");
323 /* SMBus Device, BDF:0-20-0 */
324 printk(BIOS_INFO, "sb700_devices_por_init(): SMBus Device, BDF:0-20-0\n");
325 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
327 if (dev == PCI_DEV_INVALID) {
328 die("SMBUS controller not found\n");
331 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
332 set_sb700_revision());
334 /* sbPorAtStartOfTblCfg */
335 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
336 * This is an I/O address. The I/O address must be on 16-byte boundry. */
337 pci_write_config32(dev, 0xf0, AB_INDX);
339 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
340 /* 4.3:Enables the SB700 to send transactions upstream over A-Link Express interface. */
341 axcfg_reg(0x04, 1 << 2, 1 << 2);
342 axindxc_reg(0x21, 0xff, 0);
344 /* 2.5:Enabling Non-Posted Memory Write for the K8 Platform */
345 axindxc_reg(0x10, 1 << 9, 1 << 9);
346 /* END of sbPorAtStartOfTblCfg */
348 /* sbDevicesPorInitTables */
349 /* set smbus iobase */
350 pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
352 /* enable smbus controller interface */
353 byte = pci_read_config8(dev, 0xd2);
355 pci_write_config8(dev, 0xd2, byte);
358 pci_write_config8(dev, 0x40, 0x44);
360 /* Enable ISA Address 0-960K decoding */
361 pci_write_config8(dev, 0x48, 0x0f);
363 /* Enable ISA Address 0xC0000-0xDFFFF decode */
364 pci_write_config8(dev, 0x49, 0xff);
366 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
367 byte = pci_read_config8(dev, 0x41);
370 pci_write_config8(dev, 0x41, byte);
372 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
373 /* pci_write_config8(dev, 0x43, 0x1); */
375 /* Disabling Legacy USB Fast SMI# */
376 byte = pci_read_config8(dev, 0x62);
378 pci_write_config8(dev, 0x62, byte);
380 /* Features Enable */
381 pci_write_config32(dev, 0x64, 0x829E79BF); /* bit10: Enables the HPET interrupt. */
383 /* SerialIrq Control */
384 pci_write_config8(dev, 0x69, 0x90);
386 /* Test Mode, PCIB_SReset_En Mask is set. */
387 pci_write_config8(dev, 0x6c, 0x20);
389 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
390 /*pci_write_config8(dev, 0x79, 0x4F); */
391 pci_write_config8(dev, 0x78, 0xFF);
393 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
394 pci_write_config16(dev, 0x4, 0x0407);
396 /* clear any lingering errors, so the transaction will run */
397 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
399 /* IDE Device, BDF:0-20-1 */
400 printk(BIOS_INFO, "sb700_devices_por_init(): IDE Device, BDF:0-20-1\n");
401 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
402 /* Disable prefetch */
403 byte = pci_read_config8(dev, 0x63);
405 pci_write_config8(dev, 0x63, byte);
407 /* LPC Device, BDF:0-20-3 */
408 printk(BIOS_INFO, "sb700_devices_por_init(): LPC Device, BDF:0-20-3\n");
409 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
411 pci_write_config8(dev, 0x40, 0x04);
413 /* IO Port Decode Enable */
414 pci_write_config8(dev, 0x44, 0xFF);
415 pci_write_config8(dev, 0x45, 0xFF);
416 pci_write_config8(dev, 0x46, 0xC3);
417 pci_write_config8(dev, 0x47, 0xFF);
419 // TODO: This has already been done(?)
420 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
421 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
422 * Alternate Super I/O Configuration Port (4e/4f), Wide Generic IO Port (64/65). */
423 byte = pci_read_config8(dev, 0x48);
424 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
425 byte |= 1 << 6; /* enable for RTC I/O range */
426 pci_write_config8(dev, 0x48, byte);
427 pci_write_config8(dev, 0x49, 0xFF);
428 /* Enable 0x480-0x4bf, 0x4700-0x470B */
429 byte = pci_read_config8(dev, 0x4A);
430 byte |= ((1 << 1) + (1 << 6)); /*0x42, save the configuraion for port 0x80. */
431 pci_write_config8(dev, 0x4A, byte);
433 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
434 pci_write_config8(dev, 0x7C, 0x05);
436 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
438 printk(BIOS_INFO, "sb700_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
439 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
441 /* Arbiter enable. */
442 pci_write_config8(dev, 0x43, 0xff);
444 /* Set PCDMA request into hight priority list. */
445 /* pci_write_config8(dev, 0x49, 0x1) */ ;
447 pci_write_config8(dev, 0x40, 0x26);
449 pci_write_config8(dev, 0x0d, 0x40);
450 pci_write_config8(dev, 0x1b, 0x40);
451 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
452 pci_write_config8(dev, 0x50, 0x01);
454 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
455 printk(BIOS_INFO, "sb700_devices_por_init(): SATA Device, BDF:0-18-0\n");
456 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
458 /*PHY Global Control*/
459 pci_write_config16(dev, 0x86, 0x2C00);
462 /* sbPmioPorInitTable, Pre-initializing PMIO register space
463 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
464 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
465 * The index address is first programmed into IO reg 0xcd6.
466 * Read or write values are accessed through IO reg 0xcd7.
468 static void sb700_pmio_por_init(void)
472 printk(BIOS_INFO, "sb700_pmio_por_init()\n");
473 /* K8KbRstEn, KB_RST# control for K8 system. */
474 byte = pmio_read(0x66);
476 pmio_write(0x66, byte);
478 /* RPR2.31 PM_TURN_OFF_MSG during ASF Shutdown. */
479 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12) {
480 byte = pmio_read(0x65);
482 pmio_write(0x65, byte);
484 byte = pmio_read(0x75);
487 pmio_write(0x75, byte);
489 byte = pmio_read(0x52);
492 pmio_write(0x52, byte);
494 byte = pmio_read(0xD7);
496 pmio_write(0xD7, byte);
498 byte = pmio_read(0x65);
500 pmio_write(0x65, byte);
502 byte = pmio_read(0x75);
505 pmio_write(0x75, byte);
507 byte = pmio_read(0x52);
510 pmio_write(0x52, byte);
514 /* Watch Dog Timer Control
515 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
516 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
518 pmio_write(0x6c, 0xf0);
519 pmio_write(0x6d, 0x00);
520 pmio_write(0x6e, 0xc0);
521 pmio_write(0x6f, 0xfe);
523 /* rpr2.15: Enabling Spread Spectrum */
524 byte = pmio_read(0x42);
526 pmio_write(0x42, byte);
527 /* TODO: Check if it is necessary. IDE reset */
528 byte = pmio_read(0xB2);
530 pmio_write(0xB2, byte);
534 * Add any south bridge setting.
536 static void sb700_pci_cfg(void)
541 /* SMBus Device, BDF:0-20-0 */
542 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
543 /* Enable watchdog decode timer */
544 byte = pci_read_config8(dev, 0x41);
546 pci_write_config8(dev, 0x41, byte);
548 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
549 * generated PCIRST#. */
550 byte = pmio_read(0x65);
552 pmio_write(0x65, byte);
554 /* IDE Device, BDF:0-20-1 */
555 dev = pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
556 /* Enable IDE Explicit prefetch, 0x63[0] clear */
557 byte = pci_read_config8(dev, 0x63);
559 pci_write_config8(dev, 0x63, byte);
561 /* LPC Device, BDF:0-20-3 */
562 /* The code below is ported from old chipset. It is not
563 * mentioned in RPR. But I keep them. The registers and the
564 * comments are compatible. */
565 dev = pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
566 /* Enabling LPC DMA function. */
567 byte = pci_read_config8(dev, 0x40);
569 pci_write_config8(dev, 0x40, byte);
570 /* Disabling LPC TimeOut. 0x48[7] clear. */
571 byte = pci_read_config8(dev, 0x48);
573 pci_write_config8(dev, 0x48, byte);
574 /* Disabling LPC MSI Capability, 0x78[1] clear. */
575 byte = pci_read_config8(dev, 0x78);
577 pci_write_config8(dev, 0x78, byte);
579 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
580 dev = pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
581 /* rpr7.12 SATA MSI and D3 Power State Capability. */
582 byte = pci_read_config8(dev, 0x40);
584 pci_write_config8(dev, 0x40, byte);
585 if (get_sb700_revision(pci_locate_device(PCI_ID(0x1002, 0x4385), 0)) <= 0x12)
586 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
588 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
590 pci_write_config8(dev, 0x40, byte);
595 static void sb700_por_init(void)
597 /* sbDevicesPorInitTable + sbK8PorInitTable */
598 sb700_devices_por_init();
600 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
601 sb700_pmio_por_init();
605 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
607 static void sb700_before_pci_init(void)
613 * This function should be called after enable_sb700_smbus().
615 static void sb700_early_setup(void)
617 printk(BIOS_INFO, "sb700_early_setup()\n");
622 static int smbus_read_byte(u32 device, u32 address)
624 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
627 int s3_save_nvram_early(u32 dword, int size, int nvram_pos) {
629 printk(BIOS_DEBUG, "Writing %x of size %d to nvram pos: %d\n", dword, size, nvram_pos);
631 for (i = 0; i<size; i++) {
632 outb(nvram_pos, BIOSRAM_INDEX);
633 outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
640 int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos) {
641 u32 data = *old_dword;
643 for (i = 0; i<size; i++) {
644 outb(nvram_pos, BIOSRAM_INDEX);
645 data &= ~(0xff << (i * 8));
646 data |= inb(BIOSRAM_DATA) << (i *8);
650 printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", *old_dword, size,
655 #if CONFIG_HAVE_ACPI_RESUME == 1
656 static int acpi_is_wakeup_early(void) {
658 tmp = inw(ACPI_PM1_CNT_BLK);
659 printk(BIOS_DEBUG, "IN TEST WAKEUP %x\n", tmp);
660 return (((tmp & (7 << 10)) >> 10) == 3);
664 struct cbmem_entry *get_cbmem_toc(void) {
666 int xnvram_pos = 0xfc, xi;
667 for (xi = 0; xi<4; xi++) {
668 outb(xnvram_pos, BIOSRAM_INDEX);
669 xdata &= ~(0xff << (xi * 8));
670 xdata |= inb(BIOSRAM_DATA) << (xi *8);
673 return (struct cbmem_entry *) xdata;