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 _SB800_EARLY_SETUP_C_
21 #define _SB800_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 sb800_acpi_init(void)
46 pmio_write(0x60, ACPI_PM_EVT_BLK & 0xFF);
47 pmio_write(0x61, ACPI_PM_EVT_BLK >> 8);
48 pmio_write(0x62, ACPI_PM1_CNT_BLK & 0xFF);
49 pmio_write(0x63, ACPI_PM1_CNT_BLK >> 8);
50 pmio_write(0x64, ACPI_PM_TMR_BLK & 0xFF);
51 pmio_write(0x65, ACPI_PM_TMR_BLK >> 8);
52 pmio_write(0x68, ACPI_GPE0_BLK & 0xFF);
53 pmio_write(0x69, ACPI_GPE0_BLK >> 8);
55 /* CpuControl is in \_PR.CPU0, 6 bytes */
56 pmio_write(0x66, ACPI_CPU_CONTROL & 0xFF);
57 pmio_write(0x67, ACPI_CPU_CONTROL >> 8);
59 pmio_write(0x6A, 0xB0); /* AcpiSmiCmdLo */
60 pmio_write(0x6B, 0); /* AcpiSmiCmdHi */
62 pmio_write(0x6E, 0xB8); /* AcpiPmaCntBlkLo */
63 pmio_write(0x6F, 0); /* AcpiPmaCntBlkHi */
65 pmio_write(0x6C, ACPI_PMA_CNT_BLK & 0xFF);
66 pmio_write(0x6D, ACPI_PMA_CNT_BLK >> 8);
68 pmio_write(0x74, 1<<0 | 1<<1 | 1<<4 | 1<<2); /* AcpiDecodeEnable, When set, SB uses
69 * the contents of the PM registers at
70 * index 60-6B to decode ACPI I/O address.
71 * AcpiSmiEn & SmiCmdEn*/
72 /* RTC_En_En, TMR_En_En, GBL_EN_EN */
73 outl(0x1, ACPI_PM1_CNT_BLK); /* set SCI_EN */
76 /* RPR 2.28 Get SB ASIC Revision.*/
77 static u8 get_sb800_revision(void)
83 /* if (rev != 0) return rev; */
85 dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
87 if (dev == PCI_DEV_INVALID) {
88 die("SMBUS controller not found\n");
91 rev_id = pci_read_config8(dev, 0x08);
95 } else if (rev_id == 0x41) {
98 die("It is not SB800 or SB810\r\n");
104 void sb800_clk_output_48Mhz(void)
106 /* AcpiMMioDecodeEn */
108 reg8 = pmio_read(0x24);
111 pmio_write(0x24, reg8);
113 *(volatile u32 *)(0xFED80000+0xE00+0x40) &= ~((1 << 0) | (1 << 2)); /* 48Mhz */
114 *(volatile u32 *)(0xFED80000+0xE00+0x40) |= 1 << 1; /* 48Mhz */
116 /***************************************
117 * Legacy devices are mapped to LPC space.
120 * ACPI Micro-controller port
122 * This function does not change port 0x80 decoding.
123 * Console output through any port besides 0x3f8 is unsupported.
124 * If you use FWH ROMs, you have to setup IDSEL.
125 ***************************************/
126 static void sb800_lpc_init(void)
131 //dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */
132 dev = PCI_DEV(0, 0x14, 0);
133 /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
134 * This bit has no meaning if debug strap is not enabled. So if the
135 * board keeps rebooting and the code fails to reach here, we could
136 * disable the debug strap first. */
137 reg8 = pmio_read(0x44+3);
139 pmio_write(0x44+3, reg8);
141 /* Enable lpc controller */
142 reg8 = pmio_read(0xEC);
144 pmio_write(0xEC, reg8);
146 dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439d), 0); /* LPC Controller */
147 /* Decode port 0x3f8-0x3ff (Serial 0) */
148 //#warning Serial port decode on LPC is hardcoded to 0x3f8
149 reg8 = pci_read_config8(dev, 0x44);
151 pci_write_config8(dev, 0x44, reg8);
153 /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
154 reg8 = pci_read_config8(dev, 0x47);
155 reg8 |= (1 << 5) | (1 << 6);
156 pci_write_config8(dev, 0x47, reg8);
158 /* SuperIO, LPC ROM */
159 reg8 = pci_read_config8(dev, 0x48);
160 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
161 reg8 |= (1 << 1) | (1 << 0);
162 /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
163 reg8 |= (1 << 3) | (1 << 4);
164 /* Decode port 0x70-0x73 (RTC) */
166 pci_write_config8(dev, 0x48, reg8);
169 /* what is its usage? */
170 static u32 get_sbdn(u32 bus)
174 /* Find the device. */
175 dev = PCI_DEV(bus, 0x14, 0);//pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
176 return (dev >> 15) & 0x1f;
179 static u8 dual_core(void)
181 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
185 * RPR 2.6 C-state and VID/FID change for the K8 platform.
187 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
190 byte = pmio_read(0x80);
192 byte |= 1 << 2 | 1 << 1;
196 pmio_write(0x80, byte);
198 byte = pmio_read(0x7E);
201 pmio_write(0x7E, byte);
203 pmio_write(0x94, 0x01);
205 byte = pmio_read(0x89);
207 pmio_write(0x89, byte);
209 byte = pmio_read(0x9b);
212 pmio_write(0x9b, byte);
214 pmio_write(0x99, 0x10);
216 pmio_write(0x9A, 0x00);
217 pmio_write(0x96, 0x10);
218 pmio_write(0x97, 0x00);
220 byte = pmio_read(0x81);
222 pmio_write(0x81, byte);
225 void hard_reset(void)
234 void soft_reset(void)
241 void sb800_pci_port80(void)
247 dev = PCI_DEV(0, 0x14, 4);//pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
249 /* Chip Control: Enable subtractive decoding */
250 byte = pci_read_config8(dev, 0x40);
252 pci_write_config8(dev, 0x40, byte);
254 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
255 byte = pci_read_config8(dev, 0x4B);
257 pci_write_config8(dev, 0x4B, byte);
259 /* The same IO Base and IO Limit here is meaningful because we set the
260 * bridge to be subtractive. During early setup stage, we have to make
261 * sure that data can go through port 0x80.
263 /* IO Base: 0xf000 */
264 byte = pci_read_config8(dev, 0x1C);
266 pci_write_config8(dev, 0x1C, byte);
268 /* IO Limit: 0xf000 */
269 byte = pci_read_config8(dev, 0x1D);
271 pci_write_config8(dev, 0x1D, byte);
273 /* PCI Command: Enable IO response */
274 byte = pci_read_config8(dev, 0x04);
276 pci_write_config8(dev, 0x04, byte);
279 dev = PCI_DEV(0, 0x14, 3);;//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
281 byte = pci_read_config8(dev, 0x4A);
282 byte &= ~(1 << 5); /* disable lpc port 80 */
283 pci_write_config8(dev, 0x4A, byte);
286 #define BIT0 (1 << 0)
287 #define BIT1 (1 << 1)
288 #define BIT2 (1 << 2)
289 #define BIT3 (1 << 3)
290 #define BIT4 (1 << 4)
291 #define BIT5 (1 << 5)
292 #define BIT6 (1 << 6)
293 #define BIT7 (1 << 7)
300 struct pm_entry const pm_table[] =
303 {0xD2, 0xCF, BIT4 + BIT5},
306 {0x44 + 3, 0x7F, BIT7},
309 {0x00 + 2, 0xFF, 0x40},
310 {0x00 + 3, 0xFF, 0x08},
311 {0x34, 0xEF, BIT0 + BIT1},
313 {0x5B, 0xF9, BIT1 + BIT2},
314 {0x08, 0xFE, BIT2 + BIT4},
315 {0x08 + 1, 0xFF, BIT0},
316 {0x54, 0x00, BIT4 + BIT7},
317 {0x04 + 3, 0xFD, BIT1},
318 {0x74, 0xF6, BIT0 + BIT3},
321 {0xF8 + 1, 0x00, 0x27},
322 {0xF8 + 2, 0x00, 0x00},
324 {0xC0 + 2, 0xBF, 0x40},
327 {0x54 + 3, 0xFC, BIT0 + BIT1},
328 {0x54 + 2, 0x7F, BIT7},
329 {0x54 + 2, 0x7F, 0x00},
330 {0xC4, ~(BIT2 + BIT4), BIT2 + BIT4},
332 {0xC0 + 1, 0x04, 0x03},
335 {0xC2, ~(BIT4), BIT4},
336 {0x74, 0x00, BIT0 + BIT1 + BIT2 + BIT4},
337 {0xDE + 1, ~(BIT0 + BIT1), BIT0 + BIT1},
340 {0xBA + 1, ~BIT6, BIT6},
342 {0xED, ~(BIT0 + BIT1), 0},
344 // {0xFF, 0xFF, 0xFF},
347 void sb800_lpc_port80(void)
352 /* Enable LPC controller */
353 byte = pmio_read(0xEC);
355 pmio_write(0xEC, byte);
357 /* Enable port 80 LPC decode in pci function 3 configuration space. */
358 dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
359 byte = pci_read_config8(dev, 0x4a);
360 byte |= 1 << 5; /* enable port 80 */
361 pci_write_config8(dev, 0x4a, byte);
364 /* sbDevicesPorInitTable */
365 static void sb800_devices_por_init(void)
370 printk(BIOS_INFO, "sb800_devices_por_init()\n");
371 /* SMBus Device, BDF:0-20-0 */
372 printk(BIOS_INFO, "sb800_devices_por_init(): SMBus Device, BDF:0-20-0\n");
373 dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
375 if (dev == PCI_DEV_INVALID) {
376 die("SMBUS controller not found\n");
379 printk(BIOS_INFO, "SMBus controller enabled, sb revision is A%x\n",
380 get_sb800_revision());
382 /* sbPorAtStartOfTblCfg */
383 /* rpr 4.1.Set A-Link bridge access address.
384 * This is an I/O address. The I/O address must be on 16-byte boundry. */
385 //pci_write_config32(dev, 0xf0, AB_INDX);
386 pmio_write(0xE0, AB_INDX & 0xFF);
387 pmio_write(0xE1, (AB_INDX >> 8) & 0xFF);
388 pmio_write(0xE2, (AB_INDX >> 16) & 0xFF);
389 pmio_write(0xE3, (AB_INDX >> 24) & 0xFF);
391 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
392 /* 4.2:Enables the SB800 to send transactions upstream over A-Link Express interface. */
393 axcfg_reg(0x04, 1 << 2, 1 << 2);
394 //axindxc_reg(0x21, 0xff, 0);
396 /* 4.15:Enabling Non-Posted Memory Write for the K8 Platform */
397 axindxc_reg(0x10, 1 << 9, 1 << 9);
398 /* END of sbPorAtStartOfTblCfg */
400 /* sbDevicesPorInitTables */
401 /* set smbus iobase */
402 //pci_write_config32(dev, 0x90, SMBUS_IO_BASE | 1);
403 /* The base address of SMBUS is set in a different way with sb700. */
404 byte = (SMBUS_IO_BASE & 0xFF) | 1;
405 pmio_write(0x2c, byte & 0xFF);
406 pmio_write(0x2d, SMBUS_IO_BASE >> 8);
408 /* AcpiMMioDecodeEn */
409 byte = pmio_read(0x24);
412 pmio_write(0x24, byte);
413 /* enable smbus controller interface */
414 //byte = pci_read_config8(dev, 0xd2);
416 //pci_write_config8(dev, 0xd2, byte);
419 //pci_write_config8(dev, 0x40, 0x44);
421 /* Enable ISA Address 0-960K decoding */
422 //pci_write_config8(dev, 0x48, 0x0f);
424 /* Enable ISA Address 0xC0000-0xDFFFF decode */
425 //pci_write_config8(dev, 0x49, 0xff);
427 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
428 //byte = pci_read_config8(dev, 0x41);
431 //pci_write_config8(dev, 0x41, byte);
433 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
434 /* pci_write_config8(dev, 0x43, 0x1); */
436 /* clear any lingering errors, so the transaction will run */
437 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
439 /* IDE Device, BDF:0-20-1 */
440 printk(BIOS_INFO, "sb800_devices_por_init(): IDE Device, BDF:0-20-1\n");
441 dev = PCI_DEV(0, 0x14, 1);//pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
442 /* Disable prefetch */
443 byte = pci_read_config8(dev, 0x63);
445 pci_write_config8(dev, 0x63, byte);
447 /* LPC Device, BDF:0-20-3 */
448 printk(BIOS_INFO, "sb800_devices_por_init(): LPC Device, BDF:0-20-3\n");
449 dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
451 pci_write_config8(dev, 0x40, 0x04);
453 /* LPC Sync Timeout */
454 pci_write_config8(dev, 0x49, 0xFF);
456 /* Set LPC ROM size, it has been done in sb800_lpc_init().
457 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
458 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
459 * pci_write_config16(dev, 0x68, 0x000e)
460 * pci_write_config16(dev, 0x6c, 0xfff0);*/
462 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
463 pci_write_config8(dev, 0x7C, 0x05);
465 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
467 printk(BIOS_INFO, "sb800_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
468 dev = PCI_DEV(0, 0x14, 4);//pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
470 /* Arbiter enable. */
471 pci_write_config8(dev, 0x43, 0xff);
473 /* Set PCDMA request into hight priority list. */
474 /* pci_write_config8(dev, 0x49, 0x1) */ ;
476 pci_write_config8(dev, 0x40, 0x26);
478 pci_write_config8(dev, 0x0d, 0x40);
479 pci_write_config8(dev, 0x1b, 0x40);
480 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
481 pci_write_config8(dev, 0x50, 0x01);
483 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
484 printk(BIOS_INFO, "sb800_devices_por_init(): SATA Device, BDF:0-18-0\n");
485 dev = PCI_DEV(0, 0x11, 0);//pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
487 /*PHY Global Control*/
488 pci_write_config16(dev, 0x86, 0x2C00);
491 /* sbPmioPorInitTable, Pre-initializing PMIO register space
492 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
493 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
494 * The index address is first programmed into IO reg 0xcd6.
495 * Read or write values are accessed through IO reg 0xcd7.
498 static void sb800_pmio_por_init(void)
502 printk(BIOS_INFO, "sb800_pmio_por_init()\n");
504 byte = pmio_read(0xD2);
506 pmio_write(0xD2, byte);
508 byte = pmio_read(0x5D);
511 pmio_write(0x5D, byte);
513 /* Watch Dog Timer Control
514 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
515 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
517 pmio_write(0x6c, 0xf0);
518 pmio_write(0x6d, 0x00);
519 pmio_write(0x6e, 0xc0);
520 pmio_write(0x6f, 0xfe);
522 /* rpr2.15: Enabling Spread Spectrum */
523 byte = pmio_read(0x42);
525 pmio_write(0x42, byte);
526 /* TODO: Check if it is necessary. IDE reset */
527 byte = pmio_read(0xB2);
529 pmio_write(0xB2, byte);
531 for (i=0; i<sizeof(pm_table)/sizeof(struct pm_entry); i++) {
532 byte = pmio_read(pm_table[i].port);
533 byte &= pm_table[i].mask;
534 byte |= pm_table[i].bit;
535 pmio_write(pm_table[i].port, byte);
537 pmio_write(0x00, 0x0E);
538 pmio_write(0x01, 0x00);
539 pmio_write(0x02, 0x4F);
540 pmio_write(0x03, 0x4A);
545 * Add any south bridge setting.
547 static void sb800_pci_cfg(void)
552 /* SMBus Device, BDF:0-20-0 */
553 dev = PCI_DEV(0, 0x14, 0);//pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
554 /* Enable watchdog decode timer */
555 byte = pci_read_config8(dev, 0x41);
557 pci_write_config8(dev, 0x41, byte);
559 /* rpr 7.4. Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
560 * generated PCIRST#. */
561 byte = pmio_read(0xF0);
563 pmio_write(0xF0, byte);
565 /* IDE Device, BDF:0-20-1 */
566 dev = PCI_DEV(0, 0x14, 1);//pci_locate_device(PCI_ID(0x1002, 0x439C), 0);
567 /* Enable IDE Explicit prefetch, 0x63[0] clear */
568 byte = pci_read_config8(dev, 0x63);
570 pci_write_config8(dev, 0x63, byte);
572 /* LPC Device, BDF:0-20-3 */
573 /* The code below is ported from old chipset. It is not
574 * metioned in RPR. But I keep them. The registers and the
575 * comments are compatible. */
576 dev = PCI_DEV(0, 0x14, 3);//pci_locate_device(PCI_ID(0x1002, 0x439D), 0);
577 /* Enabling LPC DMA function. */
578 byte = pci_read_config8(dev, 0x40);
580 pci_write_config8(dev, 0x40, byte);
581 /* Disabling LPC TimeOut. 0x48[7] clear. */
582 byte = pci_read_config8(dev, 0x48);
584 pci_write_config8(dev, 0x48, byte);
585 /* Disabling LPC MSI Capability, 0x78[1] clear. */
586 byte = pci_read_config8(dev, 0x78);
588 pci_write_config8(dev, 0x78, byte);
590 /* SATA Device, BDF:0-17-0, Non-Raid-5 SATA controller */
591 dev = PCI_DEV(0, 0x11, 0);//pci_locate_device(PCI_ID(0x1002, 0x4390), 0);
592 /* rpr7.12 SATA MSI and D3 Power State Capability. */
593 byte = pci_read_config8(dev, 0x40);
595 pci_write_config8(dev, 0x40, byte);
596 if (get_sb800_revision() <= 0x12)
597 pci_write_config8(dev, 0x34, 0x70); /* set 0x61 to 0x70 if S1 is not supported. */
599 pci_write_config8(dev, 0x34, 0x50); /* set 0x61 to 0x50 if S1 is not supported. */
601 pci_write_config8(dev, 0x40, byte);
606 static void sb800_por_init(void)
608 /* sbDevicesPorInitTable + sbK8PorInitTable */
609 sb800_devices_por_init();
611 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
612 //sb800_pmio_por_init();
616 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
618 static void sb800_before_pci_init(void)
624 * This function should be called after enable_sb800_smbus().
626 static void sb800_early_setup(void)
628 printk(BIOS_INFO, "sb800_early_setup()\n");
633 static int smbus_read_byte(u32 device, u32 address)
635 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
638 int s3_save_nvram_early(u32 dword, int size, int nvram_pos)
641 printk(BIOS_DEBUG, "Writing %x of size %d to nvram pos: %d\n", dword, size, nvram_pos);
643 for (i = 0; i<size; i++) {
644 outb(nvram_pos, BIOSRAM_INDEX);
645 outb((dword >>(8 * i)) & 0xff , BIOSRAM_DATA);
652 int s3_load_nvram_early(int size, u32 *old_dword, int nvram_pos)
654 u32 data = *old_dword;
656 for (i = 0; i<size; i++) {
657 outb(nvram_pos, BIOSRAM_INDEX);
658 data &= ~(0xff << (i * 8));
659 data |= inb(BIOSRAM_DATA) << (i *8);
663 printk(BIOS_DEBUG, "Loading %x of size %d to nvram pos:%d\n", *old_dword, size,
668 #if CONFIG_HAVE_ACPI_RESUME == 1
669 static int acpi_is_wakeup_early(void)
672 tmp = inw(ACPI_PM1_CNT_BLK);
673 printk(BIOS_DEBUG, "IN TEST WAKEUP %x\n", tmp);
674 return (((tmp & (7 << 10)) >> 10) == 3);
678 struct cbmem_entry *get_cbmem_toc(void)
681 int xnvram_pos = 0xfc, xi;
682 for (xi = 0; xi<4; xi++) {
683 outb(xnvram_pos, BIOSRAM_INDEX);
684 xdata &= ~(0xff << (xi * 8));
685 xdata |= inb(BIOSRAM_DATA) << (xi *8);
688 return (struct cbmem_entry *) xdata;