2 * This file is part of the coreboot project.
4 * Copyright (C) 2007 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
21 #include <northbridge/amd/amdht/AsPsDefs.h>
23 static inline void print_debug_fv(const char *str, u32 val)
25 #if CONFIG_SET_FIDVID_DEBUG
26 printk(BIOS_DEBUG, "%s%x\n", str, val);
30 static inline void print_debug_fv_8(const char *str, u8 val)
32 #if CONFIG_SET_FIDVID_DEBUG
33 printk(BIOS_DEBUG, "%s%02x\n", str, val);
37 static inline void print_debug_fv_64(const char *str, u32 val, u32 val2)
39 #if CONFIG_SET_FIDVID_DEBUG
40 printk(BIOS_DEBUG, "%s%x%x\n", str, val, val2);
48 static void enable_fid_change(u8 fid)
57 for (i = 0; i < nodes; i++) {
59 dword = pci_read_config32(dev, 0xd4);
61 dword |= (u32) fid & 0x1F;
62 dword |= 1 << 5; // enable
63 pci_write_config32(dev, 0xd4, dword);
64 printk(BIOS_DEBUG, "FID Change Node:%02x, F3xD4: %08x \n", i,
69 static void setVSRamp(device_t dev) {
70 /* BKDG r31116 2010-04-22 2.4.1.7 step b F3xD8[VSRampTime]
71 * If this field accepts 8 values between 10 and 500 us why
72 * does page 324 say "BIOS should set this field to 001b."
74 * Shouldn't it depend on the voltage regulators, mainboard
78 dword = pci_read_config32(dev, 0xd8);
80 dword |= VSRAMP_VALUE;
81 pci_write_config32(dev, 0xd8, dword);
84 static void recalculateVsSlamTimeSettingOnCorePre(device_t dev)
87 u8 highVoltageVid, lowVoltageVid, bValue;
89 u16 vSlamTimes[7] = { 1000, 2000, 3000, 4000, 6000, 10000, 20000 }; /* Reg settings scaled by 100 */
93 /* This function calculates the VsSlamTime using the range of possible
94 * voltages instead of a hardcoded 200us.
95 * Note:This function is called from setFidVidRegs and setUserPs after
96 * programming a custom Pstate.
99 /* Calculate Slam Time
100 * Vslam = 0.4us/mV * Vp0 - (lowest out of Vpmin or Valt)
101 * In our case, we will scale the values by 100 to avoid
105 /* Determine if this is a PVI or SVI system */
106 dtemp = pci_read_config32(dev, 0xA0);
108 if (dtemp & PVI_MODE)
113 /* Get P0's voltage */
114 msr = rdmsr(0xC0010064);
115 highVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
117 /* If SVI, we only care about CPU VID.
118 * If PVI, determine the higher voltage b/t NB and CPU
121 bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
122 if (highVoltageVid > bValue)
123 highVoltageVid = bValue;
126 /* Get Pmin's index */
127 msr = rdmsr(0xC0010061);
128 bValue = (u8) ((msr.lo >> PS_CUR_LIM_SHFT) & BIT_MASK_3);
131 msr = rdmsr(0xC0010064 + bValue);
132 lowVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
134 /* If SVI, we only care about CPU VID.
135 * If PVI, determine the higher voltage b/t NB and CPU
138 bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
139 if (lowVoltageVid > bValue)
140 lowVoltageVid = bValue;
144 dtemp = pci_read_config32(dev, 0xDC);
145 bValue = (u8) (dtemp & BIT_MASK_7);
147 /* Use the VID with the lowest voltage (higher VID) */
148 if (lowVoltageVid < bValue)
149 lowVoltageVid = bValue;
151 /* If Vids are 7Dh - 7Fh, force 7Ch to keep calculations linear */
152 if (lowVoltageVid > 0x7C) {
153 lowVoltageVid = 0x7C;
154 if (highVoltageVid > 0x7C)
155 highVoltageVid = 0x7C;
158 bValue = (u8) (lowVoltageVid - highVoltageVid);
160 /* Each Vid increment is 12.5 mV. The minimum slam time is:
161 * vidCodeDelta * 12.5mV * 0.4us/mV
162 * Scale by 100 to avoid decimals.
164 minimumSlamTime = bValue * (125 * 4);
166 /* Now round up to nearest register setting.
167 * Note that if we don't find a value, we
168 * will fall through to a value of 7
170 for (bValue = 0; bValue < 7; bValue++) {
171 if (minimumSlamTime <= vSlamTimes[bValue])
175 /* Apply the value */
176 dtemp = pci_read_config32(dev, 0xD8);
177 dtemp &= VSSLAM_MASK;
179 pci_write_config32(dev, 0xd8, dtemp);
182 static void config_clk_power_ctrl_reg0(int node) {
184 device_t dev = NODE_PCI(node, 3);
185 /* Program fields in Clock Power/Control register0 (F3xD4) */
187 /* set F3xD4 Clock Power/Timing Control 0 Register
188 * NbClkDidApplyAll=1b
190 * PowerStepUp= "platform dependent"
191 * PowerStepDown= "platform dependent"
193 * ClkRampHystSel=HW default
195 /* check platform type */
196 if (!(get_platform_type() & AMD_PTYPE_SVR)) {
197 /* For non-server platform
198 * PowerStepUp=01000b - 50nS
199 * PowerStepDown=01000b - 50ns
201 dword = pci_read_config32(dev, 0xd4);
203 dword |= NB_CLKDID_ALL | NB_CLKDID | PW_STP_UP50 | PW_STP_DN50 | LNK_PLL_LOCK; /* per BKDG */
204 pci_write_config32(dev, 0xd4, dword);
206 dword = pci_read_config32(dev, 0xd4);
208 /* get number of cores for PowerStepUp & PowerStepDown in server
209 1 core - 400nS - 0000b
210 2 cores - 200nS - 0010b
211 3 cores - 133nS -> 100nS - 0011b
212 4 cores - 100nS - 0011b
214 switch (get_core_num_in_bsp(node)) {
216 dword |= PW_STP_UP400 | PW_STP_DN400;
220 dword |= PW_STP_UP200 | PW_STP_DN200;
223 dword |= PW_STP_UP100 | PW_STP_DN100;
226 dword |= PW_STP_UP100 | PW_STP_DN100;
229 dword |= NB_CLKDID_ALL | NB_CLKDID | LNK_PLL_LOCK;
230 pci_write_config32(dev, 0xd4, dword);
234 static void prep_fid_change(void)
241 /* This needs to be run before any Pstate changes are requested */
245 for (i = 0; i < nodes; i++) {
246 printk(BIOS_DEBUG, "Prep FID/VID Node:%02x \n", i);
247 dev = NODE_PCI(i, 3);
250 /* BKDG r31116 2010-04-22 2.4.1.7 step b F3xD8[VSSlamTime] */
251 /* Figure out the value for VsSlamTime and program it */
252 recalculateVsSlamTimeSettingOnCorePre(dev);
254 config_clk_power_ctrl_reg0(i);
257 dword = pci_read_config32(dev, 0xA0);
258 if (dword & PVI_MODE) { /* PVI */
259 /* set slamVidMode to 0 for PVI */
260 dword &= VID_SLAM_OFF | PLLLOCK_OFF;
261 dword |= PLLLOCK_DFT_L;
262 pci_write_config32(dev, 0xA0, dword);
264 /* set slamVidMode to 1 for SVI */
265 dword &= PLLLOCK_OFF;
266 dword |= PLLLOCK_DFT_L | VID_SLAM_ON;
267 pci_write_config32(dev, 0xA0, dword);
271 /* Program F3xD8[PwrPlanes] according F3xA0[DulaVdd] */
272 dword = pci_read_config32(dev, 0xD8);
274 if (dtemp & DUAL_VDD_BIT)
277 dword &= PWR_PLN_OFF;
278 pci_write_config32(dev, 0xD8, dword);
281 /* Note the following settings are additional from the ported
282 * function setFidVidRegs()
284 dword = pci_read_config32(dev, 0xDc);
285 dword |= 0x5 << 12; /* NbsynPtrAdj set to 0x5 per BKDG (needs reset) */
286 pci_write_config32(dev, 0xdc, dword);
288 /* Rev B settings - FIXME: support other revs. */
290 pci_write_config32(dev, 0x84, dword);
293 pci_write_config32(dev, 0x80, dword);
295 dword = pci_read_config32(dev, 0x80);
296 printk(BIOS_DEBUG, " F3x80: %08x \n", dword);
297 dword = pci_read_config32(dev, 0x84);
298 printk(BIOS_DEBUG, " F3x84: %08x \n", dword);
299 dword = pci_read_config32(dev, 0xD4);
300 printk(BIOS_DEBUG, " F3xD4: %08x \n", dword);
301 dword = pci_read_config32(dev, 0xD8);
302 printk(BIOS_DEBUG, " F3xD8: %08x \n", dword);
303 dword = pci_read_config32(dev, 0xDC);
304 printk(BIOS_DEBUG, " F3xDC: %08x \n", dword);
311 static void UpdateSinglePlaneNbVid(void)
317 /* copy higher voltage (lower VID) of NBVID & CPUVID to both */
318 for (i = 0; i < 5; i++) {
319 msr = rdmsr(PS_REG_BASE + i);
320 nbVid = (msr.lo & PS_CPU_VID_M_ON) >> PS_CPU_VID_SHFT;
321 cpuVid = (msr.lo & PS_NB_VID_M_ON) >> PS_NB_VID_SHFT;
323 if (nbVid != cpuVid) {
327 msr.lo = msr.lo & PS_BOTH_VID_OFF;
328 msr.lo = msr.lo | (u32) ((nbVid) << PS_NB_VID_SHFT);
329 msr.lo = msr.lo | (u32) ((nbVid) << PS_CPU_VID_SHFT);
330 wrmsr(PS_REG_BASE + i, msr);
335 static void fixPsNbVidBeforeWR(u32 newNbVid, u32 coreid)
340 /* This function sets NbVid before the warm reset.
341 * Get StartupPstate from MSRC001_0071.
342 * Read Pstate register pionted by [StartupPstate].
343 * and copy its content to P0 and P1 registers.
344 * Copy newNbVid to P0[NbVid].
345 * transition to P1 on all cores,
346 * then transition to P0 on core 0.
347 * Wait for MSRC001_0063[CurPstate] = 000b on core 0.
350 msr = rdmsr(0xc0010071);
351 startup_pstate = (msr.hi >> (32 - 32)) & 0x07;
353 /* Copy startup pstate to P1 and P0 MSRs. Set the maxvid for this node in P0.
354 * Then transition to P1 for corex and P0 for core0.
355 * These setting will be cleared by the warm reset
357 msr = rdmsr(0xC0010064 + startup_pstate);
358 wrmsr(0xC0010065, msr);
359 wrmsr(0xC0010064, msr);
361 msr.lo &= ~0xFE000000; // clear nbvid
362 msr.lo |= newNbVid << 25;
363 wrmsr(0xC0010064, msr);
365 UpdateSinglePlaneNbVid();
367 // Transition to P1 for all APs and P0 for core0.
368 msr = rdmsr(0xC0010062);
369 msr.lo = (msr.lo & ~0x07) | 1;
370 wrmsr(0xC0010062, msr);
372 // Wait for P1 to set.
374 msr = rdmsr(0xC0010063);
375 } while (msr.lo != 1);
378 msr.lo = msr.lo & ~0x07;
379 wrmsr(0xC0010062, msr);
380 // Wait for P0 to set.
382 msr = rdmsr(0xC0010063);
383 } while (msr.lo != 0);
387 static void coreDelay(void)
394 This seems like a hack to me...
395 It would be nice to have a central delay function. */
397 cycles = 8000 << 3; /* x8 (number of 1.25ns ticks) */
399 msr = 0x10; /* TSC */
400 _RDMSR(msr, &lo, &hi);
403 _RDMSR(msr, &lo, &hi);
404 } while (lo - saved < cycles);
407 static void transitionVid(u32 targetVid, u8 dev, u8 isNb)
409 u32 currentVid, dtemp;
412 u16 timeTable[8] = { 10, 20, 30, 40, 60, 100, 200, 500 };
415 /* This function steps or slam the Nb VID to the target VID.
416 * It uses VSRampTime for [SlamVidMode]=0 ([PviMode]=1)
417 * or VSSlamTime for [SlamVidMode]=1 ([PviMode]=0)to time period.
420 /* get the current VID */
421 msr = rdmsr(0xC0010071);
423 currentVid = (msr.lo >> NB_VID_POS) & BIT_MASK_7;
425 currentVid = (msr.lo >> CPU_VID_POS) & BIT_MASK_7;
427 /* Read MSRC001_0070 COFVID Control Register */
428 msr = rdmsr(0xC0010070);
431 dtemp = pci_read_config32(dev, 0xA0);
432 if (dtemp & PVI_MODE) { /* PVI, step VID */
433 if (currentVid < targetVid) {
434 while (currentVid < targetVid) {
437 msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
439 msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
440 wrmsr(0xC0010070, msr);
442 /* read F3xD8[VSRampTime] */
443 dtemp = pci_read_config32(dev, 0xD8);
444 vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
445 vsTime = (int)timeTable[vsTimecode];
449 } while (vsTime > 0);
451 } else if (currentVid > targetVid) {
452 while (currentVid > targetVid) {
455 msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
457 msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
458 wrmsr(0xC0010070, msr);
460 /* read F3xD8[VSRampTime] */
461 dtemp = pci_read_config32(dev, 0xD8);
462 vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
463 vsTime = (int)timeTable[vsTimecode];
467 } while (vsTime > 0);
470 } else { /* SVI, slam VID */
472 msr.lo = (msr.lo & NB_VID_MASK_OFF) | (targetVid << NB_VID_POS);
474 msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (targetVid << CPU_VID_POS);
475 wrmsr(0xC0010070, msr);
477 /* read F3xD8[VSRampTime] */
478 dtemp = pci_read_config32(dev, 0xD8);
479 vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
480 vsTime = (int)timeTable[vsTimecode];
484 } while (vsTime > 0);
489 static void init_fidvid_ap(u32 bsp_apicid, u32 apicid, u32 nodeid, u32 coreid)
494 u8 nb_cof_vid_update;
501 printk(BIOS_DEBUG, "FIDVID on AP: %02x\n", apicid);
503 /* Steps 1-6 of BIOS NB COF and VID Configuration
504 * for SVI and Single-Plane PVI Systems.
507 /* If any node has nb_cof_vid_update set all nodes need an update. */
509 nb_cof_vid_update = 0;
510 for (i = 0; i < nodes; i++) {
511 if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
512 nb_cof_vid_update = 1;
517 dev = NODE_PCI(nodeid, 3);
518 pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
519 reg1fc = pci_read_config32(dev, 0x1FC);
521 if (nb_cof_vid_update) {
523 vid_max = (reg1fc >> 7) & 0x7F;
524 fid_max = (reg1fc >> 2) & 0x1F;
526 /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
527 fixPsNbVidBeforeWR(vid_max, coreid);
529 vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
530 fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
531 transitionVid(vid_max, dev, IS_NB);
534 /* fid setup is handled by the BSP at the end. */
536 } else { /* ! nb_cof_vid_update */
539 UpdateSinglePlaneNbVid();
542 send = (nb_cof_vid_update << 16) | (fid_max << 8);
543 send |= (apicid << 24); // ap apicid
545 // Send signal to BSP about this AP max fid
546 // This also indicates this AP is ready for warm reset (if required).
547 lapic_write(LAPIC_MSG_REG, send | F10_APSTATE_RESET);
550 static u32 calc_common_fid(u32 fid_packed, u32 fid_packed_new)
555 fidmax = (fid_packed >> 8) & 0xFF;
557 fidmax_new = (fid_packed_new >> 8) & 0xFF;
559 if (fidmax > fidmax_new) {
563 fid_packed &= 0xFF << 16;
564 fid_packed |= (fidmax << 8);
565 fid_packed |= fid_packed_new & (0xFF << 16); // set nb_cof_vid_update
570 static void init_fidvid_bsp_stage1(u32 ap_apicid, void *gp)
575 struct fidvid_st *fvp = gp;
578 print_debug_fv("Wait for AP stage 1: ap_apicid = ", ap_apicid);
582 if (lapic_remote_read(ap_apicid, LAPIC_MSG_REG, &readback) != 0)
584 if ((readback & 0x3f) == 1) {
586 break; /* target ap is in stage 1 */
591 printk(BIOS_DEBUG, "%s: timed out reading from ap %02x\n",
592 __func__, ap_apicid);
596 print_debug_fv("\treadback = ", readback);
598 fvp->common_fid = calc_common_fid(fvp->common_fid, readback);
600 print_debug_fv("\tcommon_fid(packed) = ", fvp->common_fid);
604 static void updateSviPsNbVidAfterWR(u32 newNbVid)
609 /* This function copies newNbVid to NbVid bits in P-state Registers[4:0]
613 for (i = 0; i < 5; i++) {
614 msr = rdmsr(0xC0010064 + i);
615 if ((msr.hi >> 31) & 1) { /* PstateEn? */
616 msr.lo &= ~(0x7F << 25);
617 msr.lo |= (newNbVid & 0x7F) << 25;
618 wrmsr(0xC0010064 + i, msr);
624 static void fixPsNbVidAfterWR(u32 newNbVid, u8 NbVidUpdatedAll)
630 /* This function copies newNbVid to NbVid bits in P-state
631 * Registers[4:0] if its NbDid bit=0 and PstateEn bit =1 in case of
632 * NbVidUpdatedAll =0 or copies copies newNbVid to NbVid bits in
633 * P-state Registers[4:0] if its and PstateEn bit =1 in case of
634 * NbVidUpdatedAll=1. Then transition to StartPstate.
637 /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
638 for (i = 0; i < 5; i++) {
639 msr = rdmsr(0xC0010064 + i);
640 /* NbDid (bit 22 of P-state Reg) == 0 or NbVidUpdatedAll = 1 */
641 if ((((msr.lo >> 22) & 1) == 0) || NbVidUpdatedAll) {
642 msr.lo &= ~(0x7F << 25);
643 msr.lo |= (newNbVid & 0x7F) << 25;
644 wrmsr(0xC0010064 + i, msr);
648 UpdateSinglePlaneNbVid();
650 /* For each core in the system, transition all cores to StartupPstate */
651 msr = rdmsr(0xC0010071);
652 StartupPstate = msr.hi & 0x07;
653 msr = rdmsr(0xC0010062);
654 msr.lo = StartupPstate;
655 wrmsr(0xC0010062, msr);
657 /* Wait for StartupPstate to set. */
659 msr = rdmsr(0xC0010063);
660 } while (msr.lo != StartupPstate);
663 static void set_p0(void)
667 // Transition P0 for calling core.
668 msr = rdmsr(0xC0010062);
669 msr.lo = (msr.lo & ~0x07);
670 wrmsr(0xC0010062, msr);
672 /* Wait for P0 to set. */
674 msr = rdmsr(0xC0010063);
675 } while (msr.lo != 0);
678 static void finalPstateChange(void)
680 /* Enble P0 on all cores for best performance.
681 * Linux can slow them down later if need be.
682 * It is safe since they will be in C1 halt
683 * most of the time anyway.
688 static void init_fidvid_stage2(u32 apicid, u32 nodeid)
695 u8 nb_cof_vid_update;
701 /* After warm reset finish the fid/vid setup for all cores. */
703 /* If any node has nb_cof_vid_update set all nodes need an update. */
705 nb_cof_vid_update = 0;
706 for (i = 0; i < nodes; i++) {
707 if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
708 nb_cof_vid_update = 1;
713 dev = NODE_PCI(nodeid, 3);
714 pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
715 reg1fc = pci_read_config32(dev, 0x1FC);
716 nbvid = (reg1fc >> 7) & 0x7F;
717 NbVidUpdateAll = (reg1fc >> 1) & 1;
719 if (nb_cof_vid_update) {
721 nbvid = (reg1fc >> 7) & 0x7F;
722 /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
723 fixPsNbVidAfterWR(nbvid, NbVidUpdateAll);
725 nbvid = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
726 updateSviPsNbVidAfterWR(nbvid);
728 } else { /* !nb_cof_vid_update */
730 UpdateSinglePlaneNbVid();
732 dtemp = pci_read_config32(dev, 0xA0);
733 dtemp &= PLLLOCK_OFF;
734 dtemp |= PLLLOCK_DFT_L;
735 pci_write_config32(dev, 0xA0, dtemp);
739 /* Set TSC to tick at the P0 ndfid rate */
746 #if CONFIG_SET_FIDVID_STORE_AP_APICID_AT_FIRST
747 struct ap_apicid_st {
749 // it could use 256 bytes for 64 node quad core system
750 u8 apicid[NODE_NUMS * 4];
753 static void store_ap_apicid(unsigned ap_apicid, void *gp)
755 struct ap_apicid_st *p = gp;
757 p->apicid[p->num++] = ap_apicid;
763 static int init_fidvid_bsp(u32 bsp_apicid, u32 nodes)
765 #if CONFIG_SET_FIDVID_STORE_AP_APICID_AT_FIRST
766 struct ap_apicid_st ap_apicidx;
773 u8 nb_cof_vid_update;
777 printk(BIOS_DEBUG, "FIDVID on BSP, APIC_id: %02x\n", bsp_apicid);
778 /* FIXME: The first half of this function is nearly the same as
779 * init_fidvid_bsp() and the code could be combined.
782 /* Steps 1-6 of BIOS NB COF and VID Configuration
783 * for SVI and Single-Plane PVI Systems.
786 /* If any node has nb_cof_vid_update set all nodes need an update. */
787 nb_cof_vid_update = 0;
788 for (i = 0; i < nodes; i++) {
789 if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
790 nb_cof_vid_update = 1;
795 dev = NODE_PCI(0, 3);
796 pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
797 reg1fc = pci_read_config32(dev, 0x1FC);
799 if (nb_cof_vid_update) {
801 vid_max = (reg1fc >> 7) & 0x7F;
802 fid_max = (reg1fc >> 2) & 0x1F;
804 /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
805 fixPsNbVidBeforeWR(vid_max, 0);
807 vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
808 fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
809 transitionVid(vid_max, dev, IS_NB);
812 /* fid setup is handled by the BSP at the end. */
814 } else { /* ! nb_cof_vid_update */
817 UpdateSinglePlaneNbVid();
820 fv.common_fid = (nb_cof_vid_update << 16) | (fid_max << 8);
821 print_debug_fv("BSP fid = ", fv.common_fid);
823 #if CONFIG_SET_FIDVID_STORE_AP_APICID_AT_FIRST && !CONFIG_SET_FIDVID_CORE0_ONLY
824 /* For all APs (We know the APIC ID of all APs even when the APIC ID
825 is lifted) remote read from AP LAPIC_MSG_REG about max fid.
826 Then calculate the common max fid that can be used for all
830 for_each_ap(bsp_apicid, CONFIG_SET_FIDVID_CORE_RANGE, store_ap_apicid, &ap_apicidx);
832 for (i = 0; i < ap_apicidx.num; i++) {
833 init_fidvid_bsp_stage1(ap_apicidx.apicid[i], &fv);
836 for_each_ap(bsp_apicid, CONFIG_SET_FIDVID_CORE0_ONLY, init_fidvid_bsp_stage1, &fv);
839 print_debug_fv("common_fid = ", fv.common_fid);
841 if (fv.common_fid & (1 << 16)) { /* check nb_cof_vid_update */
843 // Enable the common fid and other settings.
844 enable_fid_change((fv.common_fid >> 8) & 0x1F);
846 // nbfid change need warm reset, so reset at first
850 return 0; // No FID/VID changes. Don't reset