2 * This file is part of the coreboot project.
4 * Copyright (C) 2008 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
23 #include "sb600_smbus.c"
25 #define SMBUS_IO_BASE 0x1000 /* Is it a temporary SMBus I/O base address? */
28 static void pmio_write(u8 reg, u8 value)
31 outb(value, PM_INDEX + 1);
34 static u8 pmio_read(u8 reg)
37 return inb(PM_INDEX + 1);
40 /* RPR 2.1: Get SB ASIC Revision. */
41 static u8 get_sb600_revision(void)
44 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
46 if (dev == PCI_DEV_INVALID) {
47 die("SMBUS controller not found\n");
50 return pci_read_config8(dev, 0x08);
54 /***************************************
55 * Legacy devices are mapped to LPC space.
58 * ACPI Micro-controller port
60 * This function does not change port 0x80 decoding.
61 * Console output through any port besides 0x3f8 is unsupported.
62 * If you use FWH ROMs, you have to setup IDSEL.
63 * NOTE: Call me ASAP, because I will reset LPC ROM size!
64 * Reviewed-by: Carl-Daniel Hailfinger
65 * Reviewed against AMD SB600 Register Reference Manual rev. 3.03, section 3.1
67 ***************************************/
68 static void sb600_lpc_init(void)
74 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0); /* SMBUS controller */
75 /* NOTE: Set BootTimerDisable, otherwise it would keep rebooting!!
76 * This bit has no meaning if debug strap is not enabled. So if the
77 * board keeps rebooting and the code fails to reach here, we could
78 * disable the debug strap first. */
79 reg32 = pci_read_config32(dev, 0x4C);
81 pci_write_config32(dev, 0x4C, reg32);
83 /* Enable lpc controller */
84 reg32 = pci_read_config32(dev, 0x64);
86 pci_write_config32(dev, 0x64, reg32);
88 dev = pci_locate_device(PCI_ID(0x1002, 0x438d), 0); /* LPC Controller */
89 /* Decode port 0x3f8-0x3ff (Serial 0) */
90 // XXX Serial port decode on LPC is hardcoded to 0x3f8
91 reg8 = pci_read_config8(dev, 0x44);
93 pci_write_config8(dev, 0x44, reg8);
95 /* Decode port 0x60 & 0x64 (PS/2 keyboard) and port 0x62 & 0x66 (ACPI)*/
96 reg8 = pci_read_config8(dev, 0x47);
97 reg8 |= (1 << 5) | (1 << 6);
98 pci_write_config8(dev, 0x47, reg8);
100 /* SuperIO, LPC ROM */
101 reg8 = pci_read_config8(dev, 0x48);
102 /* Decode ports 0x2e-0x2f, 0x4e-0x4f (SuperI/O configuration) */
103 reg8 |= (1 << 1) | (1 << 0);
104 /* Decode variable LPC ROM address ranges 1&2 (see register 0x68-0x6b, 0x6c-0x6f) */
105 reg8 |= (1 << 3) | (1 << 4);
106 /* Decode port 0x70-0x73 (RTC) */
108 pci_write_config8(dev, 0x48, reg8);
110 /* hardware should enable LPC ROM by pin straps */
111 /* ROM access at 0xFFF80000/0xFFF00000 - 0xFFFFFFFF */
112 /* See detail in BDG-215SB600-03.pdf page 15. */
113 /* enable LPC ROM range mirroring start 0x000e(0000) */
114 pci_write_config16(dev, 0x68, 0x000e);
115 /* enable LPC ROM range mirroring end 0x000f(ffff) */
116 pci_write_config16(dev, 0x6a, 0x000f);
117 /* enable LPC ROM range start, 0xfff8(0000): 512KB, 0xfff0(0000): 1MB, 0xffe0(0000): 2MB, 0xffc0(0000): 4MB */
118 pci_write_config16(dev, 0x6c, 0xffc0);
119 /* enable LPC ROM range end at 0xffff(ffff) */
120 pci_write_config16(dev, 0x6e, 0xffff);
123 /* what is its usage? */
124 static u32 get_sbdn(u32 bus)
128 /* Find the device. */
129 dev = pci_locate_device_on_bus(PCI_ID(0x1002, 0x4385), bus);
130 return (dev >> 15) & 0x1f;
133 static u8 dual_core(void)
135 return (pci_read_config32(PCI_DEV(0, 0x18, 3), 0xE8) & (0x3<<12)) != 0;
139 * SB600 VFSMAF (VID/FID System Management Action Field) is 010b by default.
140 * RPR 2.3.3 C-state and VID/FID change for the K8 platform.
142 static void enable_fid_change_on_sb(u32 sbbusn, u32 sbdn)
145 byte = pmio_read(0x9a);
151 pmio_write(0x9a, byte);
153 byte = pmio_read(0x8f);
156 pmio_write(0x8f, byte);
158 pmio_write(0x8b, 0x01);
159 pmio_write(0x8a, 0x90);
161 if(get_sb600_revision() > 0x13)
162 pmio_write(0x88, 0x10);
164 pmio_write(0x88, 0x06);
166 byte = pmio_read(0x7c);
169 pmio_write(0x7c, byte);
171 /* Must be 0 for K8 platform. */
172 byte = pmio_read(0x68);
174 pmio_write(0x68, byte);
175 /* Must be 0 for K8 platform. */
176 byte = pmio_read(0x8d);
178 pmio_write(0x8d, byte);
180 byte = pmio_read(0x61);
182 pmio_write(0x61, byte);
184 byte = pmio_read(0x42);
186 pmio_write(0x42, byte);
188 if (get_sb600_revision() == 0x14) {
189 pmio_write(0x89, 0x10);
191 byte = pmio_read(0x52);
193 pmio_write(0x52, byte);
197 void hard_reset(void)
206 void soft_reset(void)
213 void sb600_pci_port80(void)
219 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
221 /* Chip Control: Enable subtractive decoding */
222 byte = pci_read_config8(dev, 0x40);
224 pci_write_config8(dev, 0x40, byte);
226 /* Misc Control: Enable subtractive decoding if 0x40 bit 5 is set */
227 byte = pci_read_config8(dev, 0x4B);
229 pci_write_config8(dev, 0x4B, byte);
231 /* The same IO Base and IO Limit here is meaningful because we set the
232 * bridge to be subtractive. During early setup stage, we have to make
233 * sure that data can go through port 0x80.
235 /* IO Base: 0xf000 */
236 byte = pci_read_config8(dev, 0x1C);
238 pci_write_config8(dev, 0x1C, byte);
240 /* IO Limit: 0xf000 */
241 byte = pci_read_config8(dev, 0x1D);
243 pci_write_config8(dev, 0x1D, byte);
245 /* PCI Command: Enable IO response */
246 byte = pci_read_config8(dev, 0x04);
248 pci_write_config8(dev, 0x04, byte);
251 dev = pci_locate_device(PCI_ID(0x1002, 0x438D), 0);
253 byte = pci_read_config8(dev, 0x4A);
254 byte &= ~(1 << 5); /* disable lpc port 80 */
255 pci_write_config8(dev, 0x4A, byte);
258 void sb600_lpc_port80(void)
264 /* Enable LPC controller */
265 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
266 reg32 = pci_read_config32(dev, 0x64);
267 reg32 |= 0x00100000; /* lpcEnable */
268 pci_write_config32(dev, 0x64, reg32);
270 /* Enable port 80 LPC decode in pci function 3 configuration space. */
271 dev = pci_locate_device(PCI_ID(0x1002, 0x438d), 0);
272 byte = pci_read_config8(dev, 0x4a);
273 byte |= 1 << 5; /* enable port 80 */
274 pci_write_config8(dev, 0x4a, byte);
277 /* sbDevicesPorInitTable */
278 static void sb600_devices_por_init(void)
283 printk(BIOS_INFO, "sb600_devices_por_init()\n");
284 /* SMBus Device, BDF:0-20-0 */
285 printk(BIOS_INFO, "sb600_devices_por_init(): SMBus Device, BDF:0-20-0\n");
286 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
288 if (dev == PCI_DEV_INVALID) {
289 die("SMBUS controller not found\n");
292 printk(BIOS_INFO, "SMBus controller enabled, sb revision is 0x%x\n",
293 get_sb600_revision());
295 /* sbPorAtStartOfTblCfg */
296 /* Set A-Link bridge access address. This address is set at device 14h, function 0, register 0xf0.
297 * This is an I/O address. The I/O address must be on 16-byte boundry. */
298 pci_write_config32(dev, 0xf0, AB_INDX);
300 /* To enable AB/BIF DMA access, a specific register inside the BIF register space needs to be configured first. */
301 /*Enables the SB600 to send transactions upstream over A-Link Express interface. */
302 axcfg_reg(0x04, 1 << 2, 1 << 2);
303 axindxc_reg(0x21, 0xff, 0);
305 /* 2.3.5:Enabling Non-Posted Memory Write for the K8 Platform */
306 axindxc_reg(0x10, 1 << 9, 1 << 9);
307 /* END of sbPorAtStartOfTblCfg */
309 /* sbDevicesPorInitTables */
310 /* set smbus iobase */
311 pci_write_config32(dev, 0x10, SMBUS_IO_BASE | 1);
313 /* enable smbus controller interface */
314 byte = pci_read_config8(dev, 0xd2);
316 pci_write_config8(dev, 0xd2, byte);
318 /* set smbus 1, ASF 2.0 (Alert Standard Format), iobase */
319 pci_write_config16(dev, 0x58, SMBUS_IO_BASE | 0x11);
321 /* TODO: I don't know the useage of followed two lines. I copied them from CIM. */
322 pci_write_config8(dev, 0x0a, 0x1);
323 pci_write_config8(dev, 0x0b, 0x6);
326 pci_write_config8(dev, 0x40, 0xd4);
328 /* Enable ISA Address 0-960K decoding */
329 pci_write_config8(dev, 0x48, 0x0f);
331 /* Enable ISA Address 0xC0000-0xDFFFF decode */
332 pci_write_config8(dev, 0x49, 0xff);
334 /* Enable decode cycles to IO C50, C51, C52 GPM controls. */
335 byte = pci_read_config8(dev, 0x41);
338 pci_write_config8(dev, 0x41, byte);
340 /* Legacy DMA Prefetch Enhancement, CIM masked it. */
341 /* pci_write_config8(dev, 0x43, 0x1); */
343 /* Disabling Legacy USB Fast SMI# */
344 byte = pci_read_config8(dev, 0x62);
346 pci_write_config8(dev, 0x62, byte);
348 /* Features Enable */
349 pci_write_config32(dev, 0x64, 0x829E7DBF); /* bit10: Enables the HPET interrupt. */
351 /* SerialIrq Control */
352 pci_write_config8(dev, 0x69, 0x90);
354 /* Test Mode, PCIB_SReset_En Mask is set. */
355 pci_write_config8(dev, 0x6c, 0x20);
357 /* IO Address Enable, CIM set 0x78 only and masked 0x79. */
358 /*pci_write_config8(dev, 0x79, 0x4F); */
359 pci_write_config8(dev, 0x78, 0xFF);
361 /* This register is not used on sb600. It came from older chipset. */
362 /*pci_write_config8(dev, 0x95, 0xFF); */
364 /* Set smbus iospace enable, I don't know why write 0x04 into reg5 that is reserved */
365 pci_write_config16(dev, 0x4, 0x0407);
367 /* clear any lingering errors, so the transaction will run */
368 outb(inb(SMBUS_IO_BASE + SMBHSTSTAT), SMBUS_IO_BASE + SMBHSTSTAT);
370 /* IDE Device, BDF:0-20-1 */
371 printk(BIOS_INFO, "sb600_devices_por_init(): IDE Device, BDF:0-20-1\n");
372 dev = pci_locate_device(PCI_ID(0x1002, 0x438C), 0);
373 /* Disable prefetch */
374 byte = pci_read_config8(dev, 0x63);
376 pci_write_config8(dev, 0x63, byte);
378 /* LPC Device, BDF:0-20-3 */
379 printk(BIOS_INFO, "sb600_devices_por_init(): LPC Device, BDF:0-20-3\n");
380 dev = pci_locate_device(PCI_ID(0x1002, 0x438D), 0);
382 pci_write_config8(dev, 0x40, 0x04);
384 /* IO Port Decode Enable */
385 pci_write_config8(dev, 0x44, 0xFF);
386 pci_write_config8(dev, 0x45, 0xFF);
387 pci_write_config8(dev, 0x46, 0xC3);
388 pci_write_config8(dev, 0x47, 0xFF);
390 /* IO/Mem Port Decode Enable, I don't know why CIM disable some ports.
391 * Disable LPC TimeOut counter, enable SuperIO Configuration Port (2e/2f),
392 * Alternate SuperIO Configuration Port (4e/4f), Wide Generic IO Port (64/65).
393 * Enable bits for LPC ROM memory address range 1&2 for 1M ROM setting.*/
394 byte = pci_read_config8(dev, 0x48);
395 byte |= (1 << 1) | (1 << 0); /* enable Super IO config port 2e-2h, 4e-4f */
396 byte |= (1 << 3) | (1 << 4); /* enable for LPC ROM address range1&2, Enable 512KB rom access at 0xFFF80000 - 0xFFFFFFFF */
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 /* Set LPC ROM size, it has been done in sb600_lpc_init().
406 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB;
407 * enable LPC ROM range, 0xfff8: 512KB, 0xfff0: 1MB
408 * pci_write_config16(dev, 0x68, 0x000e)
409 * pci_write_config16(dev, 0x6c, 0xfff0);*/
411 /* Enable Tpm12_en and Tpm_legacy. I don't know what is its usage and copied from CIM. */
412 pci_write_config8(dev, 0x7C, 0x05);
414 /* P2P Bridge, BDF:0-20-4, the configuration of the registers in this dev are copied from CIM,
415 * TODO: I don't know what are their mean? */
416 printk(BIOS_INFO, "sb600_devices_por_init(): P2P Bridge, BDF:0-20-4\n");
417 dev = pci_locate_device(PCI_ID(0x1002, 0x4384), 0);
418 /* I don't know why CIM tried to write into a read-only reg! */
419 /*pci_write_config8(dev, 0x0c, 0x20) */ ;
421 /* Arbiter enable. */
422 pci_write_config8(dev, 0x43, 0xff);
424 /* Set PCDMA request into hight priority list. */
425 /* pci_write_config8(dev, 0x49, 0x1) */ ;
427 pci_write_config8(dev, 0x40, 0x26);
429 /* I don't know why CIM set reg0x1c as 0x11.
430 * System will block at sdram_initialize() if I set it before call sdram_initialize().
431 * If it is necessary to set reg0x1c as 0x11, please call this function after sdram_initialize().
432 * pci_write_config8(dev, 0x1c, 0x11);
433 * pci_write_config8(dev, 0x1d, 0x11);*/
435 /*CIM set this register; but I didn't find its description in RPR.
436 On DBM690T platform, I didn't find different between set and skip this register.
437 But on Filbert platform, the DEBUG message from serial port on Peanut board can't be displayed
438 after the bit0 of this register is set.
439 pci_write_config8(dev, 0x04, 0x21);
441 pci_write_config8(dev, 0x0d, 0x40);
442 pci_write_config8(dev, 0x1b, 0x40);
443 /* Enable PCIB_DUAL_EN_UP will fix potential problem with PCI cards. */
444 pci_write_config8(dev, 0x50, 0x01);
446 /* SATA Device, BDF:0-18-0, Non-Raid-5 SATA controller */
447 printk(BIOS_INFO, "sb600_devices_por_init(): SATA Device, BDF:0-18-0\n");
448 dev = pci_locate_device(PCI_ID(0x1002, 0x4380), 0);
450 /*PHY Global Control, we are using A14.
451 * default: 0x2c40 for ASIC revision A12 and below
452 * 0x2c00 for ASIC revision A13 and above.*/
453 pci_write_config16(dev, 0x86, 0x2C00);
455 /* PHY Port0-3 Control */
456 pci_write_config32(dev, 0x88, 0xB400DA);
457 pci_write_config32(dev, 0x8c, 0xB400DA);
458 pci_write_config32(dev, 0x90, 0xB400DA);
459 pci_write_config32(dev, 0x94, 0xB400DA);
461 /* Port0-3 BIST Control/Status */
462 pci_write_config8(dev, 0xa5, 0xB8);
463 pci_write_config8(dev, 0xad, 0xB8);
464 pci_write_config8(dev, 0xb5, 0xB8);
465 pci_write_config8(dev, 0xbd, 0xB8);
468 /* sbPmioPorInitTable, Pre-initializing PMIO register space
469 * The power management (PM) block is resident in the PCI/LPC/ISA bridge.
470 * The PM regs are accessed via IO mapped regs 0xcd6 and 0xcd7.
471 * The index address is first programmed into IO reg 0xcd6.
472 * Read or write values are accessed through IO reg 0xcd7.
474 static void sb600_pmio_por_init(void)
478 printk(BIOS_INFO, "sb600_pmio_por_init()\n");
479 /* K8KbRstEn, KB_RST# control for K8 system. */
480 byte = pmio_read(0x66);
482 pmio_write(0x66, byte);
484 /* RPR2.3.4 S3/S4/S5 Function for the K8 Platform. */
485 byte = pmio_read(0x52);
488 pmio_write(0x52, byte);
490 /* C state enable and SLP enable in C states. */
491 byte = pmio_read(0x67);
493 pmio_write(0x67, byte);
495 /* CIM sets 0x0e, but bit2 is for P4 system. */
496 byte = pmio_read(0x68);
499 pmio_write(0x68, byte);
501 /* Watch Dog Timer Control
502 * Set watchdog time base to 0xfec000f0 to avoid SCSI card boot failure.
503 * But I don't find WDT is enabled in SMBUS 0x41 bit3 in CIM.
505 pmio_write(0x6c, 0xf0);
506 pmio_write(0x6d, 0x00);
507 pmio_write(0x6e, 0xc0);
508 pmio_write(0x6f, 0xfe);
510 /* rpr2.14: Enables HPET periodical mode */
511 byte = pmio_read(0x9a);
513 pmio_write(0x9a, byte);
514 byte = pmio_read(0x9f);
516 pmio_write(0x9f, byte);
517 byte = pmio_read(0x9e);
518 byte |= (1 << 6) | (1 << 7);
519 pmio_write(0x9e, byte);
521 /* rpr2.14: Hides SM bus controller Bar1 where stores HPET MMIO base address */
522 /* We have to clear this bit here, otherwise the kernel hangs. */
523 byte = pmio_read(0x55);
526 pmio_write(0x55, byte);
528 /* rpr2.14: Make HPET MMIO decoding controlled by the memory enable bit in command register of LPC ISA bridage */
529 byte = pmio_read(0x52);
531 pmio_write(0x52, byte);
533 /* rpr2.22: PLL Reset */
534 byte = pmio_read(0x86);
536 pmio_write(0x86, byte);
539 /* This provides 16us delay before the assertion of LDTSTP# when C3 is entered.
540 * The delay will allow USB DMA to go on in a continuous manner
542 pmio_write(0x89, 0x10);
543 /* Set this bit to allow pop-up request being latched during the minimum LDTSTP# assertion time */
544 byte = pmio_read(0x52);
546 pmio_write(0x52, byte);
548 /* rpr2.15: ASF Remote Control Action */
549 byte = pmio_read(0x9f);
551 pmio_write(0x9f, byte);
553 /* rpr2.19: Enabling Spread Spectrum */
554 byte = pmio_read(0x42);
556 pmio_write(0x42, byte);
560 * Compliant with CIM_48's sbPciCfg.
561 * Add any south bridge setting.
563 static void sb600_pci_cfg(void)
568 /* SMBus Device, BDF:0-20-0 */
569 dev = pci_locate_device(PCI_ID(0x1002, 0x4385), 0);
570 /* Eable the hidden revision ID, available after A13. */
571 byte = pci_read_config8(dev, 0x70);
573 pci_write_config8(dev, 0x70, byte);
574 /* rpr2.20 Disable Timer IRQ Enhancement for proper operation of the 8254 timer, 0xae[5]. */
575 byte = pci_read_config8(dev, 0xae);
577 pci_write_config8(dev, 0xae, byte);
579 /* Enable watchdog decode timer */
580 byte = pci_read_config8(dev, 0x41);
582 pci_write_config8(dev, 0x41, byte);
584 /* Set to 1 to reset USB on the software (such as IO-64 or IO-CF9 cycles)
585 * generated PCIRST#. */
586 byte = pmio_read(0x65);
588 pmio_write(0x65, byte);
589 /*For A13 and above. */
590 if (get_sb600_revision() > 0x12) {
591 /* rpr2.16 C-State Reset, PMIO 0x9f[7]. */
592 byte = pmio_read(0x9f);
594 pmio_write(0x9f, byte);
595 /* rpr2.17 PCI Clock Period will increase to 30.8ns. 0x53[7]. */
596 byte = pmio_read(0x53);
598 pmio_write(0x53, byte);
601 /* IDE Device, BDF:0-20-1 */
602 dev = pci_locate_device(PCI_ID(0x1002, 0x438C), 0);
603 /* Enable IDE Explicit prefetch, 0x63[0] clear */
604 byte = pci_read_config8(dev, 0x63);
606 pci_write_config8(dev, 0x63, byte);
608 /* LPC Device, BDF:0-20-3 */
609 dev = pci_locate_device(PCI_ID(0x1002, 0x438D), 0);
610 /* rpr7.2 Enabling LPC DMA function. */
611 byte = pci_read_config8(dev, 0x40);
613 pci_write_config8(dev, 0x40, byte);
614 /* rpr7.3 Disabling LPC TimeOut. 0x48[7] clear. */
615 byte = pci_read_config8(dev, 0x48);
617 pci_write_config8(dev, 0x48, byte);
618 /* rpr7.5 Disabling LPC MSI Capability, 0x78[1] clear. */
619 byte = pci_read_config8(dev, 0x78);
621 pci_write_config8(dev, 0x78, byte);
623 /* SATA Device, BDF:0-18-0, Non-Raid-5 SATA controller */
624 dev = pci_locate_device(PCI_ID(0x1002, 0x4380), 0);
625 /* rpr6.8 Disabling SATA MSI Capability, for A13 and above, 0x42[7]. */
626 if (0x12 < get_sb600_revision()) {
628 reg32 = pci_read_config32(dev, 0x40);
630 pci_write_config32(dev, 0x40, reg32);
633 /* EHCI Device, BDF:0-19-5, ehci usb controller */
634 dev = pci_locate_device(PCI_ID(0x1002, 0x4386), 0);
635 /* rpr5.10 Disabling USB EHCI MSI Capability. 0x50[6]. */
636 byte = pci_read_config8(dev, 0x50);
638 pci_write_config8(dev, 0x50, byte);
640 /* OHCI0 Device, BDF:0-19-0, ohci usb controller #0 */
641 dev = pci_locate_device(PCI_ID(0x1002, 0x4387), 0);
642 /* rpr5.11 Disabling USB OHCI MSI Capability. 0x40[12:8]=0x1f. */
643 byte = pci_read_config8(dev, 0x41);
645 pci_write_config8(dev, 0x41, byte);
650 * Compliant with CIM_48's ATSBPowerOnResetInitJSP
652 static void sb600_por_init(void)
654 /* sbDevicesPorInitTable + sbK8PorInitTable */
655 sb600_devices_por_init();
657 /* sbPmioPorInitTable + sbK8PmioPorInitTable */
658 sb600_pmio_por_init();
662 * Compliant with CIM_48's AtiSbBeforePciInit
663 * It should be called during early POST after memory detection and BIOS shadowing but before PCI bus enumeration.
665 static void sb600_before_pci_init(void)
671 * This function should be called after enable_sb600_smbus().
673 static void sb600_early_setup(void)
675 printk(BIOS_INFO, "sb600_early_setup()\n");
679 static int smbus_read_byte(u32 device, u32 address)
681 return do_smbus_read_byte(SMBUS_IO_BASE, device, address);