2 * This file is part of the coreboot project.
4 * Copyright (C) 2002 Linux Networx
5 * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
6 * Copyright (C) 2004 YingHai Lu
7 * Copyright (C) 2008 Advanced Micro Devices, Inc.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <cpu/x86/mem.h>
24 #include <cpu/x86/cache.h>
25 #include <cpu/x86/mtrr.h>
26 #include <cpu/x86/tsc.h>
33 #ifndef QRANK_DIMM_SUPPORT
34 #define QRANK_DIMM_SUPPORT 0
38 #define printk_raminit printk_debug
40 #define printk_raminit(fmt, arg...)
44 #if (CONFIG_RAMTOP & (CONFIG_RAMTOP -1)) != 0
45 # error "CONFIG_RAMTOP must be a power of 2"
48 #include "amdk8_f_pci.c"
51 /* for PCI_ADDR(0, 0x18, 2, 0x98) index,
52 and PCI_ADDR(0x, 0x18, 2, 0x9c) data */
55 [29: 0] DctOffset (Dram Controller Offset)
56 [30:30] DctAccessWrite (Dram Controller Read/Write Select)
59 [31:31] DctAccessDone (Dram Controller Access Done)
60 0 = Access in progress
61 1 = No access is progress
64 [31: 0] DctOffsetData (Dram Controller Offset Data)
67 - Write the register num to DctOffset with
69 - poll the DctAccessDone until it = 1
70 - Read the data from DctOffsetData
72 - Write the data to DctOffsetData
73 - Write register num to DctOffset with DctAccessWrite = 1
74 - poll the DctAccessDone untio it = 1
78 static void setup_resource_map(const unsigned int *register_values, int max)
81 for (i = 0; i < max; i += 3) {
85 dev = register_values[i] & ~0xff;
86 where = register_values[i] & 0xff;
87 reg = pci_read_config32(dev, where);
88 reg &= register_values[i+1];
89 reg |= register_values[i+2];
90 pci_write_config32(dev, where, reg);
94 static int controller_present(const struct mem_controller *ctrl)
96 return pci_read_config32(ctrl->f0, 0) == 0x11001022;
99 static void sdram_set_registers(const struct mem_controller *ctrl, struct sys_info *sysinfo)
101 static const unsigned int register_values[] = {
103 /* Careful set limit registers before base registers which
104 contain the enables */
105 /* DRAM Limit i Registers
114 * [ 2: 0] Destination Node ID
124 * [10: 8] Interleave select
125 * specifies the values of A[14:12] to use with interleave enable.
127 * [31:16] DRAM Limit Address i Bits 39-24
128 * This field defines the upper address bits of a 40 bit address
129 * that define the end of the DRAM region.
131 PCI_ADDR(0, 0x18, 1, 0x44), 0x0000f8f8, 0x00000000,
132 PCI_ADDR(0, 0x18, 1, 0x4C), 0x0000f8f8, 0x00000001,
133 PCI_ADDR(0, 0x18, 1, 0x54), 0x0000f8f8, 0x00000002,
134 PCI_ADDR(0, 0x18, 1, 0x5C), 0x0000f8f8, 0x00000003,
135 PCI_ADDR(0, 0x18, 1, 0x64), 0x0000f8f8, 0x00000004,
136 PCI_ADDR(0, 0x18, 1, 0x6C), 0x0000f8f8, 0x00000005,
137 PCI_ADDR(0, 0x18, 1, 0x74), 0x0000f8f8, 0x00000006,
138 PCI_ADDR(0, 0x18, 1, 0x7C), 0x0000f8f8, 0x00000007,
139 /* DRAM Base i Registers
148 * [ 0: 0] Read Enable
151 * [ 1: 1] Write Enable
152 * 0 = Writes Disabled
155 * [10: 8] Interleave Enable
156 * 000 = No interleave
157 * 001 = Interleave on A[12] (2 nodes)
159 * 011 = Interleave on A[12] and A[14] (4 nodes)
163 * 111 = Interleve on A[12] and A[13] and A[14] (8 nodes)
165 * [13:16] DRAM Base Address i Bits 39-24
166 * This field defines the upper address bits of a 40-bit address
167 * that define the start of the DRAM region.
169 PCI_ADDR(0, 0x18, 1, 0x40), 0x0000f8fc, 0x00000000,
170 PCI_ADDR(0, 0x18, 1, 0x48), 0x0000f8fc, 0x00000000,
171 PCI_ADDR(0, 0x18, 1, 0x50), 0x0000f8fc, 0x00000000,
172 PCI_ADDR(0, 0x18, 1, 0x58), 0x0000f8fc, 0x00000000,
173 PCI_ADDR(0, 0x18, 1, 0x60), 0x0000f8fc, 0x00000000,
174 PCI_ADDR(0, 0x18, 1, 0x68), 0x0000f8fc, 0x00000000,
175 PCI_ADDR(0, 0x18, 1, 0x70), 0x0000f8fc, 0x00000000,
176 PCI_ADDR(0, 0x18, 1, 0x78), 0x0000f8fc, 0x00000000,
178 /* DRAM CS Base Address i Registers
187 * [ 0: 0] Chip-Select Bank Enable
191 * [ 2: 2] Memory Test Failed
193 * [13: 5] Base Address (21-13)
194 * An optimization used when all DIMM are the same size...
196 * [28:19] Base Address (36-27)
197 * This field defines the top 11 addresses bit of a 40-bit
198 * address that define the memory address space. These
199 * bits decode 32-MByte blocks of memory.
202 PCI_ADDR(0, 0x18, 2, 0x40), 0xe007c018, 0x00000000,
203 PCI_ADDR(0, 0x18, 2, 0x44), 0xe007c018, 0x00000000,
204 PCI_ADDR(0, 0x18, 2, 0x48), 0xe007c018, 0x00000000,
205 PCI_ADDR(0, 0x18, 2, 0x4C), 0xe007c018, 0x00000000,
206 PCI_ADDR(0, 0x18, 2, 0x50), 0xe007c018, 0x00000000,
207 PCI_ADDR(0, 0x18, 2, 0x54), 0xe007c018, 0x00000000,
208 PCI_ADDR(0, 0x18, 2, 0x58), 0xe007c018, 0x00000000,
209 PCI_ADDR(0, 0x18, 2, 0x5C), 0xe007c018, 0x00000000,
210 /* DRAM CS Mask Address i Registers
215 * Select bits to exclude from comparison with the DRAM Base address register.
217 * [13: 5] Address Mask (21-13)
218 * Address to be excluded from the optimized case
220 * [28:19] Address Mask (36-27)
221 * The bits with an address mask of 1 are excluded from address comparison
225 PCI_ADDR(0, 0x18, 2, 0x60), 0xe007c01f, 0x00000000,
226 PCI_ADDR(0, 0x18, 2, 0x64), 0xe007c01f, 0x00000000,
227 PCI_ADDR(0, 0x18, 2, 0x68), 0xe007c01f, 0x00000000,
228 PCI_ADDR(0, 0x18, 2, 0x6C), 0xe007c01f, 0x00000000,
230 /* DRAM Control Register
232 * [ 3: 0] RdPtrInit ( Read Pointer Initial Value)
233 * 0x03-0x00: reserved
234 * [ 6: 4] RdPadRcvFifoDly (Read Delay from Pad Receive FIFO)
237 * 010 = 1.5 Memory Clocks
238 * 011 = 2 Memory Clocks
239 * 100 = 2.5 Memory Clocks
240 * 101 = 3 Memory Clocks
241 * 110 = 3.5 Memory Clocks
244 * [16:16] AltVidC3MemClkTriEn (AltVID Memory Clock Tristate Enable)
245 * Enables the DDR memory clocks to be tristated when alternate VID
246 * mode is enabled. This bit has no effect if the DisNbClkRamp bit
248 * [17:17] DllTempAdjTime (DLL Temperature Adjust Cycle Time)
251 * [18:18] DqsRcvEnTrain (DQS Receiver Enable Training Mode)
252 * 0 = Normal DQS Receiver enable operation
253 * 1 = DQS receiver enable training mode
256 PCI_ADDR(0, 0x18, 2, 0x78), 0xfff80000, (6<<4)|(6<<0),
258 /* DRAM Initialization Register
260 * [15: 0] MrsAddress (Address for MRS/EMRS Commands)
261 * this field specifies the dsata driven on the DRAM address pins
262 * 15-0 for MRS and EMRS commands
263 * [18:16] MrsBank (Bank Address for MRS/EMRS Commands)
264 * this files specifies the data driven on the DRAM bank pins for
265 * the MRS and EMRS commands
267 * [24:24] SendPchgAll (Send Precharge All Command)
268 * Setting this bit causes the DRAM controller to send a precharge
269 * all command. This bit is cleared by the hardware after the
271 * [25:25] SendAutoRefresh (Send Auto Refresh Command)
272 * Setting this bit causes the DRAM controller to send an auto
273 * refresh command. This bit is cleared by the hardware after the
275 * [26:26] SendMrsCmd (Send MRS/EMRS Command)
276 * Setting this bit causes the DRAM controller to send the MRS or
277 * EMRS command defined by the MrsAddress and MrsBank fields. This
278 * bit is cleared by the hardware adter the commmand completes
279 * [27:27] DeassertMemRstX (De-assert Memory Reset)
280 * Setting this bit causes the DRAM controller to de-assert the
281 * memory reset pin. This bit cannot be used to assert the memory
283 * [28:28] AssertCke (Assert CKE)
284 * setting this bit causes the DRAM controller to assert the CKE
285 * pins. This bit cannot be used to de-assert the CKE pins
287 * [31:31] EnDramInit (Enable DRAM Initialization)
288 * Setting this bit puts the DRAM controller in a BIOS controlled
289 * DRAM initialization mode. BIOS must clear this bit aster DRAM
290 * initialization is complete.
292 // PCI_ADDR(0, 0x18, 2, 0x7C), 0x60f80000, 0,
295 /* DRAM Bank Address Mapping Register
297 * Specify the memory module size
317 PCI_ADDR(0, 0x18, 2, 0x80), 0xffff0000, 0x00000000,
318 /* DRAM Timing Low Register
320 * [ 2: 0] Tcl (Cas# Latency, Cas# to read-data-valid)
330 * [ 5: 4] Trcd (Ras#-active to Cas# read/write delay)
336 * [ 9: 8] Trp (Row Precharge Time, Precharge-to-Active or Auto-Refresh)
342 * [11:11] Trtp (Read to Precharge Time, read Cas# to precharge time)
343 * 0 = 2 clocks for Burst Length of 32 Bytes
344 * 4 clocks for Burst Length of 64 Bytes
345 * 1 = 3 clocks for Burst Length of 32 Bytes
346 * 5 clocks for Burst Length of 64 Bytes
347 * [15:12] Tras (Minimum Ras# Active Time)
350 * 0010 = 5 bus clocks
352 * 1111 = 18 bus clocks
353 * [19:16] Trc (Row Cycle Time, Ras#-active to Ras#-active or auto
354 * refresh of the same bank)
355 * 0000 = 11 bus clocks
356 * 0010 = 12 bus clocks
358 * 1110 = 25 bus clocks
359 * 1111 = 26 bus clocks
360 * [21:20] Twr (Write Recovery Time, From the last data to precharge,
361 * writes can go back-to-back)
366 * [23:22] Trrd (Active-to-active(Ras#-to-Ras#) Delay of different banks)
371 * [31:24] MemClkDis ( Disable the MEMCLK outputs for DRAM channel A,
372 * BIOS should set it to reduce the power consumption)
373 * Bit F(1207) M2 Package S1g1 Package
375 * 1 N/A MA0_CLK1 MA0_CLK1
378 * 4 MA1_CLK MA1_CLK0 N/A
379 * 5 MA0_CLK MA0_CLK0 MA0_CLK0
381 * 7 N/A MA0_CLK2 MA0_CLK2
383 PCI_ADDR(0, 0x18, 2, 0x88), 0x000004c8, 0xff000002 /* 0x03623125 */ ,
384 /* DRAM Timing High Register
387 * [ 6: 4] TrwtTO (Read-to-Write Turnaround for Data, DQS Contention)
397 * [ 9: 8] Twtr (Internal DRAM Write-to-Read Command Delay,
398 * minium write-to-read delay when both access the same chip select)
403 * [11:10] Twrrd (Write to Read DIMM Termination Turnaround, minimum
404 * write-to-read delay when accessing two different DIMMs)
409 * [13:12] Twrwr (Write to Write Timing)
410 * 00 = 1 bus clocks ( 0 idle cycle on the bus)
411 * 01 = 2 bus clocks ( 1 idle cycle on the bus)
412 * 10 = 3 bus clocks ( 2 idle cycles on the bus)
414 * [15:14] Trdrd ( Read to Read Timing)
415 * 00 = 2 bus clocks ( 1 idle cycle on the bus)
416 * 01 = 3 bus clocks ( 2 idle cycles on the bus)
417 * 10 = 4 bus clocks ( 3 idle cycles on the bus)
418 * 11 = 5 bus clocks ( 4 idel cycles on the bus)
419 * [17:16] Tref (Refresh Rate)
420 * 00 = Undefined behavior
422 * 10 = Refresh interval of 7.8 microseconds
423 * 11 = Refresh interval of 3.9 microseconds
425 * [22:20] Trfc0 ( Auto-Refresh Row Cycle Time for the Logical DIMM0,
426 * based on DRAM density and speed)
427 * 000 = 75 ns (all speeds, 256Mbit)
428 * 001 = 105 ns (all speeds, 512Mbit)
429 * 010 = 127.5 ns (all speeds, 1Gbit)
430 * 011 = 195 ns (all speeds, 2Gbit)
431 * 100 = 327.5 ns (all speeds, 4Gbit)
435 * [25:23] Trfc1 ( Auto-Refresh Row Cycle Time for the Logical DIMM1,
436 * based on DRAM density and speed)
437 * [28:26] Trfc2 ( Auto-Refresh Row Cycle Time for the Logical DIMM2,
438 * based on DRAM density and speed)
439 * [31:29] Trfc3 ( Auto-Refresh Row Cycle Time for the Logical DIMM3,
440 * based on DRAM density and speed)
442 PCI_ADDR(0, 0x18, 2, 0x8c), 0x000c008f, (2 << 16)|(1 << 8),
443 /* DRAM Config Low Register
445 * [ 0: 0] InitDram (Initialize DRAM)
446 * 1 = write 1 cause DRAM controller to execute the DRAM
447 * initialization, when done it read to 0
448 * [ 1: 1] ExitSelfRef ( Exit Self Refresh Command )
449 * 1 = write 1 causes the DRAM controller to bring the DRAMs out
450 * for self refresh mode
452 * [ 5: 4] DramTerm (DRAM Termination)
453 * 00 = On die termination disabled
458 * [ 7: 7] DramDrvWeak ( DRAM Drivers Weak Mode)
459 * 0 = Normal drive strength mode.
460 * 1 = Weak drive strength mode
461 * [ 8: 8] ParEn (Parity Enable)
462 * 1 = Enable address parity computation output, PAR,
463 * and enables the parity error input, ERR
464 * [ 9: 9] SelfRefRateEn (Faster Self Refresh Rate Enable)
465 * 1 = Enable high temperature ( two times normal )
467 * [10:10] BurstLength32 ( DRAM Burst Length Set for 32 Bytes)
470 * [11:11] Width128 ( Width of DRAM interface)
471 * 0 = the controller DRAM interface is 64-bits wide
472 * 1 = the controller DRAM interface is 128-bits wide
473 * [12:12] X4Dimm (DIMM 0 is x4)
474 * [13:13] X4Dimm (DIMM 1 is x4)
475 * [14:14] X4Dimm (DIMM 2 is x4)
476 * [15:15] X4Dimm (DIMM 3 is x4)
478 * 1 = x4 DIMM present
479 * [16:16] UnBuffDimm ( Unbuffered DIMMs)
481 * 1 = Unbuffered DIMMs
483 * [19:19] DimmEccEn ( DIMM ECC Enable )
484 * 1 = ECC checking is being enabled for all DIMMs on the DRAM
485 * controller ( Through F3 0x44[EccEn])
488 PCI_ADDR(0, 0x18, 2, 0x90), 0xfff6004c, 0x00000010,
489 /* DRAM Config High Register
491 * [ 0: 2] MemClkFreq ( Memory Clock Frequency)
497 * [ 3: 3] MemClkFreqVal (Memory Clock Freqency Valid)
498 * 1 = BIOS need to set the bit when setting up MemClkFreq to
500 * [ 7: 4] MaxAsyncLat ( Maximum Asynchronous Latency)
505 * [12:12] RDqsEn ( Read DQS Enable) This bit is only be set if x8
506 * registered DIMMs are present in the system
507 * 0 = DM pins function as data mask pins
508 * 1 = DM pins function as read DQS pins
510 * [14:14] DisDramInterface ( Disable the DRAM interface ) When this bit
511 * is set, the DRAM controller is disabled, and interface in low power
513 * 0 = Enabled (default)
515 * [15:15] PowerDownEn ( Power Down Mode Enable )
516 * 0 = Disabled (default)
518 * [16:16] PowerDown ( Power Down Mode )
519 * 0 = Channel CKE Control
520 * 1 = Chip Select CKE Control
521 * [17:17] FourRankSODimm (Four Rank SO-DIMM)
522 * 1 = this bit is set by BIOS to indicate that a four rank
524 * [18:18] FourRankRDimm (Four Rank Registered DIMM)
525 * 1 = this bit is set by BIOS to indicate that a four rank
526 * registered DIMM is present
528 * [20:20] SlowAccessMode (Slow Access Mode (2T Mode))
529 * 0 = DRAM address and control signals are driven for one
531 * 1 = One additional MEMCLK of setup time is provided on all
532 * DRAM address and control signals except CS, CKE, and ODT;
533 * i.e., these signals are drivern for two MEMCLK cycles
536 * [22:22] BankSwizzleMode ( Bank Swizzle Mode),
537 * 0 = Disabled (default)
540 * [27:24] DcqBypassMax ( DRAM Controller Queue Bypass Maximum)
541 * 0000 = No bypass; the oldest request is never bypassed
542 * 0001 = The oldest request may be bypassed no more than 1 time
544 * 1111 = The oldest request may be bypassed no more than 15\
546 * [31:28] FourActWindow ( Four Bank Activate Window) , not more than
547 * 4 banks in a 8 bank device are activated
548 * 0000 = No tFAW window restriction
549 * 0001 = 8 MEMCLK cycles
550 * 0010 = 9 MEMCLK cycles
552 * 1101 = 20 MEMCLK cycles
555 PCI_ADDR(0, 0x18, 2, 0x94), 0x00a82f00,0x00008000,
556 /* DRAM Delay Line Register
558 * [ 0: 0] MemClrStatus (Memory Clear Status) : Readonly
559 * when set, this bit indicates that the memory clear function
560 * is complete. Only clear by reset. BIOS should not write or
561 * read the DRAM until this bit is set by hardware
562 * [ 1: 1] DisableJitter ( Disable Jitter)
563 * When set the DDR compensation circuit will not change the
564 * values unless the change is more than one step from the
566 * [ 3: 2] RdWrQByp ( Read/Write Queue Bypass Count)
571 * [ 4: 4] Mode64BitMux (Mismatched DIMM Support Enable)
572 * 1 When bit enables support for mismatched DIMMs when using
573 * 128-bit DRAM interface, the Width128 no effect, only for
575 * [ 5: 5] DCC_EN ( Dynamica Idle Cycle Counter Enable)
576 * When set to 1, indicates that each entry in the page tables
577 * dynamically adjusts the idle cycle limit based on page
578 * Conflict/Page Miss (PC/PM) traffic
579 * [ 8: 6] ILD_lmt ( Idle Cycle Limit)
588 * [ 9: 9] DramEnabled ( DRAM Enabled)
589 * When Set, this bit indicates that the DRAM is enabled, this
590 * bit is set by hardware after DRAM initialization or on an exit
591 * from self refresh. The DRAM controller is intialized after the
592 * hardware-controlled initialization process ( initiated by the
593 * F2 0x90[DramInit]) completes or when the BIOS-controlled
594 * initialization process completes (F2 0x7c(EnDramInit] is
595 * written from 1 to 0)
597 * [31:24] MemClkDis ( Disable the MEMCLK outputs for DRAM channel B,
598 * BIOS should set it to reduce the power consumption)
599 * Bit F(1207) M2 Package S1g1 Package
601 * 1 N/A MA0_CLK1 MA0_CLK1
604 * 4 MA1_CLK MA1_CLK0 N/A
605 * 5 MA0_CLK MA0_CLK0 MA0_CLK0
607 * 7 N/A MA0_CLK2 MA0_CLK2
609 PCI_ADDR(0, 0x18, 2, 0xa0), 0x00fffc00, 0xff000000,
611 /* DRAM Scrub Control Register
613 * [ 4: 0] DRAM Scrube Rate
615 * [12: 8] L2 Scrub Rate
617 * [20:16] Dcache Scrub
620 * 00000 = Do not scrub
642 * All Others = Reserved
644 PCI_ADDR(0, 0x18, 3, 0x58), 0xffe0e0e0, 0x00000000,
645 /* DRAM Scrub Address Low Register
647 * [ 0: 0] DRAM Scrubber Redirect Enable
649 * 1 = Scrubber Corrects errors found in normal operation
651 * [31: 6] DRAM Scrub Address 31-6
653 PCI_ADDR(0, 0x18, 3, 0x5C), 0x0000003e, 0x00000000,
654 /* DRAM Scrub Address High Register
656 * [ 7: 0] DRAM Scrubb Address 39-32
659 PCI_ADDR(0, 0x18, 3, 0x60), 0xffffff00, 0x00000000,
661 /* for PCI_ADDR(0, 0x18, 2, 0x98) index,
662 and PCI_ADDR(0x, 0x18, 2, 0x9c) data */
665 [29: 0] DctOffset (Dram Controller Offset)
666 [30:30] DctAccessWrite (Dram Controller Read/Write Select)
669 [31:31] DctAccessDone (Dram Controller Access Done)
670 0 = Access in progress
671 1 = No access is progress
674 [31: 0] DctOffsetData (Dram Controller Offset Data)
677 - Write the register num to DctOffset with DctAccessWrite = 0
678 - poll the DctAccessDone until it = 1
679 - Read the data from DctOffsetData
681 - Write the data to DctOffsetData
682 - Write register num to DctOffset with DctAccessWrite = 1
683 - poll the DctAccessDone untio it = 1
689 if (!controller_present(ctrl)) {
690 sysinfo->ctrl_present[ctrl->node_id] = 0;
693 sysinfo->ctrl_present[ctrl->node_id] = 1;
695 printk_spew("setting up CPU %02x northbridge registers\n", ctrl->node_id);
696 max = ARRAY_SIZE(register_values);
697 for (i = 0; i < max; i += 3) {
701 dev = (register_values[i] & ~0xff) - PCI_DEV(0, 0x18, 0) + ctrl->f0;
702 where = register_values[i] & 0xff;
703 reg = pci_read_config32(dev, where);
704 reg &= register_values[i+1];
705 reg |= register_values[i+2];
706 pci_write_config32(dev, where, reg);
708 printk_spew("done.\n");
711 static int is_dual_channel(const struct mem_controller *ctrl)
714 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
715 return dcl & DCL_Width128;
718 static int is_opteron(const struct mem_controller *ctrl)
720 /* Test to see if I am an Opteron.
721 * FIXME Testing dual channel capability is correct for now
722 * but a better test is probably required.
723 * m2 and s1g1 support dual channel too. but only support unbuffered dimm
725 #warning "FIXME implement a better test for opterons"
727 nbcap = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP);
728 return !!(nbcap & NBCAP_128Bit);
731 static int is_registered(const struct mem_controller *ctrl)
733 /* Test to see if we are dealing with registered SDRAM.
734 * If we are not registered we are unbuffered.
735 * This function must be called after spd_handle_unbuffered_dimms.
738 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
739 return !(dcl & DCL_UnBuffDimm);
743 static void spd_get_dimm_size(unsigned device, struct dimm_size *sz)
745 /* Calculate the log base 2 size of a DIMM in bits */
752 value = spd_read_byte(device, SPD_ROW_NUM); /* rows */
753 if (value < 0) goto hw_err;
754 if ((value & 0xff) == 0) goto val_err; /* max is 16 ? */
755 sz->per_rank += value & 0xff;
756 sz->rows = value & 0xff;
758 value = spd_read_byte(device, SPD_COL_NUM); /* columns */
759 if (value < 0) goto hw_err;
760 if ((value & 0xff) == 0) goto val_err; /* max is 11 */
761 sz->per_rank += value & 0xff;
762 sz->col = value & 0xff;
764 value = spd_read_byte(device, SPD_BANK_NUM); /* banks */
765 if (value < 0) goto hw_err;
766 if ((value & 0xff) == 0) goto val_err;
767 sz->bank = log2(value & 0xff); // convert 4 to 2, and 8 to 3
768 sz->per_rank += sz->bank;
770 /* Get the module data width and convert it to a power of two */
771 value = spd_read_byte(device, SPD_DATA_WIDTH);
772 if (value < 0) goto hw_err;
774 if ((value != 72) && (value != 64)) goto val_err;
775 sz->per_rank += log2(value) - 3; //64 bit So another 3 lines
777 /* How many ranks? */
778 /* number of physical banks */
779 value = spd_read_byte(device, SPD_MOD_ATTRIB_RANK);
780 if (value < 0) goto hw_err;
781 /* value >>= SPD_MOD_ATTRIB_RANK_NUM_SHIFT; */
782 value &= SPD_MOD_ATTRIB_RANK_NUM_MASK;
783 value += SPD_MOD_ATTRIB_RANK_NUM_BASE; // 0-->1, 1-->2, 3-->4
785 rank == 1 only one rank or say one side
786 rank == 2 two side , and two ranks
787 rank == 4 two side , and four ranks total
788 Some one side two ranks, because of stacked
790 if ((value != 1) && (value != 2) && (value != 4 )) {
795 /* verify if per_rank is equal byte 31
796 it has the DIMM size as a multiple of 128MB.
798 value = spd_read_byte(device, SPD_RANK_SIZE);
799 if (value < 0) goto hw_err;
802 if (value <=4 ) value += 8; // add back to 1G to high
803 value += (27-5); // make 128MB to the real lines
804 if ( value != (sz->per_rank)) {
805 printk_err("Bad RANK Size --\n");
812 die("Bad SPD value\n");
813 /* If an hw_error occurs report that I have no memory */
825 static void set_dimm_size(const struct mem_controller *ctrl,
826 struct dimm_size *sz, unsigned index,
827 struct mem_info *meminfo)
829 uint32_t base0, base1;
831 /* For each base register.
832 * Place the dimm size in 32 MB quantities in the bits 31 - 21.
833 * The initialize dimm size is in bits.
834 * Set the base enable bit0.
839 /* Make certain side1 of the dimm is at least 128MB */
840 if (sz->per_rank >= 27) {
841 base0 = (1 << ((sz->per_rank - 27 ) + 19)) | 1;
844 /* Make certain side2 of the dimm is at least 128MB */
845 if (sz->rank > 1) { // 2 ranks or 4 ranks
846 base1 = (1 << ((sz->per_rank - 27 ) + 19)) | 1;
849 /* Double the size if we are using dual channel memory */
850 if (meminfo->is_Width128) {
851 base0 = (base0 << 1) | (base0 & 1);
852 base1 = (base1 << 1) | (base1 & 1);
855 /* Clear the reserved bits */
856 base0 &= ~0xe007fffe;
857 base1 &= ~0xe007fffe;
859 if (!(meminfo->dimm_mask & 0x0F) && (meminfo->dimm_mask & 0xF0)) { /* channelB only? */
860 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 4) << 2), base0);
861 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 5) << 2), base1);
863 /* Set the appropriate DIMM base address register */
864 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 0) << 2), base0);
865 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 1) << 2), base1);
866 #if QRANK_DIMM_SUPPORT == 1
868 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 4) << 2), base0);
869 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 5) << 2), base1);
874 /* Enable the memory clocks for this DIMM by Clear the MemClkDis bit*/
878 #if CONFIG_CPU_SOCKET_TYPE == 0x10 /* L1 */
879 ClkDis0 = DTL_MemClkDis0;
880 #elif CONFIG_CPU_SOCKET_TYPE == 0x11 /* AM2 */
881 ClkDis0 = DTL_MemClkDis0_AM2;
882 #elif CONFIG_CPU_SOCKET_TYPE == 0x12 /* S1G1 */
883 ClkDis0 = DTL_MemClkDis0_S1g1;
886 if (!(meminfo->dimm_mask & 0x0F) && (meminfo->dimm_mask & 0xF0)) { /* channelB only? */
887 dword = pci_read_config32(ctrl->f2, DRAM_CTRL_MISC);
888 dword &= ~(ClkDis0 >> index);
889 pci_write_config32(ctrl->f2, DRAM_CTRL_MISC, dword);
892 dword = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW); //Channel A
893 dword &= ~(ClkDis0 >> index);
894 #if QRANK_DIMM_SUPPORT == 1
896 dword &= ~(ClkDis0 >> (index+2));
899 pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dword);
901 if (meminfo->is_Width128) { // ChannelA+B
902 dword = pci_read_config32(ctrl->f2, DRAM_CTRL_MISC);
903 dword &= ~(ClkDis0 >> index);
904 #if QRANK_DIMM_SUPPORT == 1
906 dword &= ~(ClkDis0 >> (index+2));
909 pci_write_config32(ctrl->f2, DRAM_CTRL_MISC, dword);
916 /* row col bank for 64 bit
932 static void set_dimm_cs_map(const struct mem_controller *ctrl,
933 struct dimm_size *sz, unsigned index,
934 struct mem_info *meminfo)
936 static const uint8_t cs_map_aaa[24] = {
937 /* (bank=2, row=13, col=9)(3, 16, 11) ---> (0, 0, 0) (1, 3, 2) */
952 if (!(meminfo->dimm_mask & 0x0F) && (meminfo->dimm_mask & 0xF0)) { /* channelB only? */
955 map = pci_read_config32(ctrl->f2, DRAM_BANK_ADDR_MAP);
956 map &= ~(0xf << (index * 4));
957 #if QRANK_DIMM_SUPPORT == 1
959 map &= ~(0xf << ( (index + 2) * 4));
963 /* Make certain side1 of the dimm is at least 128MB */
964 if (sz->per_rank >= 27) {
966 temp_map = cs_map_aaa[(sz->bank-2)*3*4 + (sz->rows - 13)*3 + (sz->col - 9) ];
967 map |= temp_map << (index*4);
968 #if QRANK_DIMM_SUPPORT == 1
970 map |= temp_map << ( (index + 2) * 4);
975 pci_write_config32(ctrl->f2, DRAM_BANK_ADDR_MAP, map);
980 static long spd_set_ram_size(const struct mem_controller *ctrl,
981 struct mem_info *meminfo)
985 for (i = 0; i < DIMM_SOCKETS; i++) {
986 struct dimm_size *sz = &(meminfo->sz[i]);
987 u32 spd_device = ctrl->channel0[i];
989 if (!(meminfo->dimm_mask & (1 << i))) {
990 if (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) { /* channelB only? */
991 spd_device = ctrl->channel1[i];
997 spd_get_dimm_size(spd_device, sz);
998 if (sz->per_rank == 0) {
999 return -1; /* Report SPD error */
1001 set_dimm_size(ctrl, sz, i, meminfo);
1002 set_dimm_cs_map(ctrl, sz, i, meminfo);
1004 return meminfo->dimm_mask;
1007 static void route_dram_accesses(const struct mem_controller *ctrl,
1008 unsigned long base_k, unsigned long limit_k)
1010 /* Route the addresses to the controller node */
1015 unsigned limit_reg, base_reg;
1018 node_id = ctrl->node_id;
1019 index = (node_id << 3);
1020 limit = (limit_k << 2);
1021 limit &= 0xffff0000;
1022 limit -= 0x00010000;
1023 limit |= ( 0 << 8) | (node_id << 0);
1024 base = (base_k << 2);
1026 base |= (0 << 8) | (1<<1) | (1<<0);
1028 limit_reg = 0x44 + index;
1029 base_reg = 0x40 + index;
1030 for (device = PCI_DEV(0, 0x18, 1); device <= PCI_DEV(0, 0x1f, 1);
1031 device += PCI_DEV(0, 1, 0)) {
1032 pci_write_config32(device, limit_reg, limit);
1033 pci_write_config32(device, base_reg, base);
1037 static void set_top_mem(unsigned tom_k, unsigned hole_startk)
1039 /* Error if I don't have memory */
1044 /* Report the amount of memory. */
1045 printk_debug("RAM end at 0x%08x kB\n", tom_k);
1047 /* Now set top of memory */
1049 if (tom_k > (4*1024*1024)) {
1050 printk_raminit("Handling memory mapped above 4 GB\n");
1051 printk_raminit("Upper RAM end at 0x%08x kB\n", tom_k);
1052 msr.lo = (tom_k & 0x003fffff) << 10;
1053 msr.hi = (tom_k & 0xffc00000) >> 22;
1054 wrmsr(TOP_MEM2, msr);
1055 printk_raminit("Correcting memory amount mapped below 4 GB\n");
1058 /* Leave a 64M hole between TOP_MEM and TOP_MEM2
1059 * so I can see my rom chip and other I/O devices.
1061 if (tom_k >= 0x003f0000) {
1062 #if CONFIG_HW_MEM_HOLE_SIZEK != 0
1063 if (hole_startk != 0) {
1064 tom_k = hole_startk;
1068 printk_raminit("Adjusting lower RAM end\n");
1070 printk_raminit("Lower RAM end at 0x%08x kB\n", tom_k);
1071 msr.lo = (tom_k & 0x003fffff) << 10;
1072 msr.hi = (tom_k & 0xffc00000) >> 22;
1073 wrmsr(TOP_MEM, msr);
1076 static unsigned long interleave_chip_selects(const struct mem_controller *ctrl, int is_Width128)
1080 static const uint8_t csbase_low_f0_shift[] = {
1081 /* 128MB */ (14 - (13-5)),
1082 /* 256MB */ (15 - (13-5)),
1083 /* 512MB */ (15 - (13-5)),
1084 /* 512MB */ (16 - (13-5)),
1085 /* 512MB */ (16 - (13-5)),
1086 /* 1GB */ (16 - (13-5)),
1087 /* 1GB */ (16 - (13-5)),
1088 /* 2GB */ (16 - (13-5)),
1089 /* 2GB */ (17 - (13-5)),
1090 /* 4GB */ (17 - (13-5)),
1091 /* 4GB */ (16 - (13-5)),
1092 /* 8GB */ (17 - (13-5)),
1095 /* cs_base_high is not changed */
1097 uint32_t csbase_inc;
1098 int chip_selects, index;
1100 unsigned common_size;
1101 unsigned common_cs_mode;
1102 uint32_t csbase, csmask;
1104 /* See if all of the memory chip selects are the same size
1105 * and if so count them.
1109 common_cs_mode = 0xff;
1110 for (index = 0; index < 8; index++) {
1115 value = pci_read_config32(ctrl->f2, DRAM_CSBASE + (index << 2));
1117 /* Is it enabled? */
1122 size = (value >> 19) & 0x3ff;
1123 if (common_size == 0) {
1126 /* The size differed fail */
1127 if (common_size != size) {
1131 value = pci_read_config32(ctrl->f2, DRAM_BANK_ADDR_MAP);
1132 cs_mode =( value >> ((index>>1)*4)) & 0xf;
1133 if (common_cs_mode == 0xff) {
1134 common_cs_mode = cs_mode;
1136 /* The cs_mode differed fail */
1137 if (common_cs_mode != cs_mode) {
1142 /* Chip selects can only be interleaved when there is
1143 * more than one and their is a power of two of them.
1145 bits = log2(chip_selects);
1146 if (((1 << bits) != chip_selects) || (bits < 1) || (bits > 3)) {
1147 //chip_selects max = 8
1151 /* Find the bits of csbase that we need to interleave on */
1152 csbase_inc = 1 << (csbase_low_f0_shift[common_cs_mode]);
1157 /* Compute the initial values for csbase and csbask.
1158 * In csbase just set the enable bit and the base to zero.
1159 * In csmask set the mask bits for the size and page level interleave.
1162 csmask = (((common_size << bits) - 1) << 19);
1163 csmask |= 0x3fe0 & ~((csbase_inc << bits) - csbase_inc);
1164 for (index = 0; index < 8; index++) {
1167 value = pci_read_config32(ctrl->f2, DRAM_CSBASE + (index << 2));
1168 /* Is it enabled? */
1172 pci_write_config32(ctrl->f2, DRAM_CSBASE + (index << 2), csbase);
1173 if ((index & 1) == 0) { //only have 4 CSMASK
1174 pci_write_config32(ctrl->f2, DRAM_CSMASK + ((index>>1) << 2), csmask);
1176 csbase += csbase_inc;
1179 printk_debug("Interleaved\n");
1181 /* Return the memory size in K */
1182 return common_size << ((27-10) + bits);
1185 static unsigned long order_chip_selects(const struct mem_controller *ctrl)
1189 /* Remember which registers we have used in the high 8 bits of tom */
1192 /* Find the largest remaining canidate */
1193 unsigned index, canidate;
1194 uint32_t csbase, csmask;
1198 for (index = 0; index < 8; index++) {
1200 value = pci_read_config32(ctrl->f2, DRAM_CSBASE + (index << 2));
1202 /* Is it enabled? */
1207 /* Is it greater? */
1208 if (value <= csbase) {
1212 /* Has it already been selected */
1213 if (tom & (1 << (index + 24))) {
1216 /* I have a new canidate */
1221 /* See if I have found a new canidate */
1226 /* Remember the dimm size */
1227 size = csbase >> 19;
1229 /* Remember I have used this register */
1230 tom |= (1 << (canidate + 24));
1232 /* Recompute the cs base register value */
1233 csbase = (tom << 19) | 1;
1235 /* Increment the top of memory */
1238 /* Compute the memory mask */
1239 csmask = ((size -1) << 19);
1240 csmask |= 0x3fe0; /* For now don't optimize */
1242 /* Write the new base register */
1243 pci_write_config32(ctrl->f2, DRAM_CSBASE + (canidate << 2), csbase);
1244 /* Write the new mask register */
1245 if ((canidate & 1) == 0) { //only have 4 CSMASK
1246 pci_write_config32(ctrl->f2, DRAM_CSMASK + ((canidate >> 1) << 2), csmask);
1250 /* Return the memory size in K */
1251 return (tom & ~0xff000000) << (27-10);
1254 static unsigned long memory_end_k(const struct mem_controller *ctrl, int max_node_id)
1258 /* Find the last memory address used */
1260 for (node_id = 0; node_id < max_node_id; node_id++) {
1261 uint32_t limit, base;
1263 index = node_id << 3;
1264 base = pci_read_config32(ctrl->f1, 0x40 + index);
1265 /* Only look at the limit if the base is enabled */
1266 if ((base & 3) == 3) {
1267 limit = pci_read_config32(ctrl->f1, 0x44 + index);
1268 end_k = ((limit + 0x00010000) & 0xffff0000) >> 2;
1274 static void order_dimms(const struct mem_controller *ctrl,
1275 struct mem_info *meminfo)
1277 unsigned long tom_k, base_k;
1279 if (read_option(CMOS_VSTART_interleave_chip_selects,
1280 CMOS_VLEN_interleave_chip_selects, 1) != 0) {
1281 tom_k = interleave_chip_selects(ctrl, meminfo->is_Width128);
1283 printk_debug("Interleaving disabled\n");
1288 tom_k = order_chip_selects(ctrl);
1291 /* Compute the memory base address */
1292 base_k = memory_end_k(ctrl, ctrl->node_id);
1294 route_dram_accesses(ctrl, base_k, tom_k);
1295 set_top_mem(tom_k, 0);
1298 static long disable_dimm(const struct mem_controller *ctrl, unsigned index,
1299 struct mem_info *meminfo)
1301 printk_debug("disabling dimm %02x\n", index);
1302 if (!(meminfo->dimm_mask & 0x0F) && (meminfo->dimm_mask & 0xF0)) { /* channelB only? */
1303 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 4) << 2), 0);
1304 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 5) << 2), 0);
1306 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 0) << 2), 0);
1307 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 1) << 2), 0);
1308 #if QRANK_DIMM_SUPPORT == 1
1309 if (meminfo->sz[index].rank == 4) {
1310 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 4) << 2), 0);
1311 pci_write_config32(ctrl->f2, DRAM_CSBASE + (((index << 1) + 5) << 2), 0);
1316 meminfo->dimm_mask &= ~(1 << index);
1317 return meminfo->dimm_mask;
1320 static long spd_handle_unbuffered_dimms(const struct mem_controller *ctrl,
1321 struct mem_info *meminfo)
1324 uint32_t registered;
1327 for (i = 0; (i < DIMM_SOCKETS); i++) {
1329 u32 spd_device = ctrl->channel0[i];
1330 if (!(meminfo->dimm_mask & (1 << i))) {
1331 if (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) { /* channelB only? */
1332 spd_device = ctrl->channel1[i];
1337 value = spd_read_byte(spd_device, SPD_DIMM_TYPE);
1342 /* Registered dimm ? */
1344 if ((value == SPD_DIMM_TYPE_RDIMM) || (value == SPD_DIMM_TYPE_mRDIMM)) {
1345 //check SPD_MOD_ATTRIB to verify it is SPD_MOD_ATTRIB_REGADC (0x11)?
1346 registered |= (1<<i);
1350 if (is_opteron(ctrl)) {
1352 if ( registered != (meminfo->dimm_mask & ((1<<DIMM_SOCKETS)-1)) ) {
1353 meminfo->dimm_mask &= (registered | (registered << DIMM_SOCKETS) ); //disable unbuffed dimm
1354 // die("Mixed buffered and registered dimms not supported");
1356 //By yhlu for debug M2, s1g1 can do dual channel, but it use unbuffer DIMM
1358 die("Unbuffered Dimms not supported on Opteron");
1364 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
1365 dcl &= ~DCL_UnBuffDimm;
1366 meminfo->is_registered = 1;
1368 dcl |= DCL_UnBuffDimm;
1369 meminfo->is_registered = 0;
1371 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
1373 if (meminfo->is_registered) {
1374 printk_spew("Registered\n");
1376 printk_spew("Unbuffered\n");
1378 return meminfo->dimm_mask;
1381 static unsigned int spd_detect_dimms(const struct mem_controller *ctrl)
1386 for (i = 0; i < DIMM_SOCKETS; i++) {
1389 device = ctrl->channel0[i];
1390 printk_raminit("DIMM socket %i, channel 0 SPD device is 0x%02x\n", i, device);
1392 byte = spd_read_byte(ctrl->channel0[i], SPD_MEM_TYPE); /* Type */
1393 if (byte == SPD_MEM_TYPE_SDRAM_DDR2) {
1394 dimm_mask |= (1 << i);
1397 device = ctrl->channel1[i];
1398 printk_raminit("DIMM socket %i, channel 1 SPD device is 0x%02x\n", i, device);
1400 byte = spd_read_byte(ctrl->channel1[i], SPD_MEM_TYPE);
1401 if (byte == SPD_MEM_TYPE_SDRAM_DDR2) {
1402 dimm_mask |= (1 << (i + DIMM_SOCKETS));
1409 static long spd_enable_2channels(const struct mem_controller *ctrl, struct mem_info *meminfo)
1413 /* SPD addresses to verify are identical */
1414 static const uint8_t addresses[] = {
1415 2, /* Type should be DDR2 SDRAM */
1416 3, /* *Row addresses */
1417 4, /* *Column addresses */
1418 5, /* *Number of DIMM Ranks */
1419 6, /* *Module Data Width*/
1420 11, /* *DIMM Conf Type */
1421 13, /* *Pri SDRAM Width */
1422 17, /* *Logical Banks */
1423 20, /* *DIMM Type Info */
1424 21, /* *SDRAM Module Attributes */
1425 27, /* *tRP Row precharge time */
1426 28, /* *Minimum Row Active to Row Active Delay (tRRD) */
1427 29, /* *tRCD RAS to CAS */
1428 30, /* *tRAS Activate to Precharge */
1429 36, /* *Write recovery time (tWR) */
1430 37, /* *Internal write to read command delay (tRDP) */
1431 38, /* *Internal read to precharge command delay (tRTP) */
1432 40, /* *Extension of Byte 41 tRC and Byte 42 tRFC */
1433 41, /* *Minimum Active to Active/Auto Refresh Time(Trc) */
1434 42, /* *Minimum Auto Refresh Command Time(Trfc) */
1435 /* The SPD addresses 18, 9, 23, 26 need special treatment like
1436 * in spd_set_memclk. Right now they cause many false negatives.
1437 * Keep them at the end to see other mismatches (if any).
1439 18, /* *Supported CAS Latencies */
1440 9, /* *Cycle time at highest CAS Latency CL=X */
1441 23, /* *Cycle time at CAS Latency (CLX - 1) */
1442 26, /* *Cycle time at CAS Latency (CLX - 2) */
1447 /* S1G1 and AM2 sockets are Mod64BitMux capable. */
1448 #if CONFIG_CPU_SOCKET_TYPE == 0x11 || CONFIG_CPU_SOCKET_TYPE == 0x12
1454 /* If the dimms are not in pairs do not do dual channels */
1455 if ((meminfo->dimm_mask & ((1 << DIMM_SOCKETS) - 1)) !=
1456 ((meminfo->dimm_mask >> DIMM_SOCKETS) & ((1 << DIMM_SOCKETS) - 1))) {
1457 goto single_channel;
1459 /* If the cpu is not capable of doing dual channels don't do dual channels */
1460 nbcap = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP);
1461 if (!(nbcap & NBCAP_128Bit)) {
1462 goto single_channel;
1464 for (i = 0; (i < 4) && (ctrl->channel0[i]); i++) {
1465 unsigned device0, device1;
1468 /* If I don't have a dimm skip this one */
1469 if (!(meminfo->dimm_mask & (1 << i))) {
1472 device0 = ctrl->channel0[i];
1473 device1 = ctrl->channel1[i];
1474 /* Abort if the chips don't support a common CAS latency. */
1475 common_cl = spd_read_byte(device0, 18) & spd_read_byte(device1, 18);
1477 printk_debug("No common CAS latency supported\n");
1478 goto single_channel;
1480 printk_raminit("Common CAS latency bitfield: 0x%02x\n", common_cl);
1482 for (j = 0; j < ARRAY_SIZE(addresses); j++) {
1484 addr = addresses[j];
1485 value0 = spd_read_byte(device0, addr);
1489 value1 = spd_read_byte(device1, addr);
1493 if (value0 != value1) {
1494 printk_raminit("SPD values differ between channel 0/1 for byte %i\n", addr);
1495 goto single_channel;
1499 printk_spew("Enabling dual channel memory\n");
1500 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
1501 dcl &= ~DCL_BurstLength32; /* 32byte mode may be preferred in platforms that include graphics controllers that generate a lot of 32-bytes system memory accesses
1502 32byte mode is not supported when the DRAM interface is 128 bits wides, even 32byte mode is set, system still use 64 byte mode */
1503 dcl |= DCL_Width128;
1504 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
1505 meminfo->is_Width128 = 1;
1506 return meminfo->dimm_mask;
1509 meminfo->is_Width128 = 0;
1510 meminfo->is_64MuxMode = 0;
1513 if ((meminfo->dimm_mask & ((1 << DIMM_SOCKETS) - 1)) !=
1514 ((meminfo->dimm_mask >> DIMM_SOCKETS) & ((1 << DIMM_SOCKETS) - 1))) {
1515 if (((meminfo->dimm_mask >> DIMM_SOCKETS) & ((1 << DIMM_SOCKETS) - 1))) {
1516 /* mux capable and single dimm in channelB */
1518 printk_spew("Enable 64MuxMode & BurstLength32\n");
1519 dcm = pci_read_config32(ctrl->f2, DRAM_CTRL_MISC);
1520 dcm |= DCM_Mode64BitMux;
1521 pci_write_config32(ctrl->f2, DRAM_CTRL_MISC, dcm);
1522 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
1523 //dcl |= DCL_BurstLength32; /* 32byte mode for channelB only */
1524 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
1525 meminfo->is_64MuxMode = 1;
1527 meminfo->dimm_mask &= ~((1 << (DIMM_SOCKETS * 2)) - (1 << DIMM_SOCKETS));
1530 } else { /* unmatched dual dimms ? */
1531 /* unmatched dual dimms not supported by meminit code. Use single channelA dimm. */
1532 meminfo->dimm_mask &= ~((1 << (DIMM_SOCKETS * 2)) - (1 << DIMM_SOCKETS));
1533 printk_spew("Unmatched dual dimms. Use single channelA dimm.\n");
1535 return meminfo->dimm_mask;
1539 uint16_t cycle_time;
1540 uint8_t divisor; /* In 1/40 ns increments */
1545 uint8_t DcqByPassMax;
1546 uint32_t dch_memclk;
1550 static const struct mem_param speed[] = {
1553 .cycle_time = 0x500,
1554 .divisor = 200, // how many 1/40ns per clock
1555 .dch_memclk = DCH_MemClkFreq_200MHz, //0
1565 .cycle_time = 0x375,
1566 .divisor = 150, //????
1567 .dch_memclk = DCH_MemClkFreq_266MHz, //1
1576 .cycle_time = 0x300,
1578 .dch_memclk = DCH_MemClkFreq_333MHz, //2
1588 .cycle_time = 0x250,
1590 .dch_memclk = DCH_MemClkFreq_400MHz,//3
1598 .cycle_time = 0x000,
1602 static const struct mem_param *get_mem_param(unsigned min_cycle_time)
1605 const struct mem_param *param;
1606 for (param = &speed[0]; param->cycle_time ; param++) {
1607 if (min_cycle_time > (param+1)->cycle_time) {
1611 if (!param->cycle_time) {
1612 die("min_cycle_time to low");
1614 printk_spew("%s\n", param->name);
1618 static uint8_t get_exact_divisor(int i, uint8_t divisor)
1620 //input divisor could be 200(200), 150(266), 120(333), 100 (400)
1621 static const uint8_t dv_a[] = {
1622 /* 200 266 333 400 */
1623 /*4 */ 250, 250, 250, 250,
1624 /*5 */ 200, 200, 200, 100,
1625 /*6 */ 200, 166, 166, 100,
1626 /*7 */ 200, 171, 142, 100,
1628 /*8 */ 200, 150, 125, 100,
1629 /*9 */ 200, 156, 133, 100,
1630 /*10*/ 200, 160, 120, 100,
1631 /*11*/ 200, 163, 127, 100,
1633 /*12*/ 200, 150, 133, 100,
1634 /*13*/ 200, 153, 123, 100,
1635 /*14*/ 200, 157, 128, 100,
1636 /*15*/ 200, 160, 120, 100,
1643 /* Check for FID control support */
1644 struct cpuid_result cpuid1;
1645 cpuid1 = cpuid(0x80000007);
1646 if( cpuid1.edx & 0x02 ) {
1647 /* Use current FID */
1649 msr = rdmsr(0xc0010042);
1650 fid_cur = msr.lo & 0x3f;
1654 /* Use startup FID */
1656 msr = rdmsr(0xc0010015);
1657 fid_start = (msr.lo & (0x3f << 24));
1659 index = fid_start>>25;
1662 if (index>12) return divisor;
1664 if (i>3) return divisor;
1666 return dv_a[index * 4+i];
1671 struct spd_set_memclk_result {
1672 const struct mem_param *param;
1677 static unsigned convert_to_linear(unsigned value)
1679 static const unsigned fraction[] = { 0x25, 0x33, 0x66, 0x75 };
1682 /* We need to convert value to more readable */
1683 if ((value & 0xf) < 10) { //no .25, .33, .66, .75
1686 valuex = ((value & 0xf0) << 4) | fraction [(value & 0xf)-10];
1692 static const uint8_t latency_indicies[] = { 25, 23, 9 };
1694 int find_optimum_spd_latency(u32 spd_device, unsigned *min_latency, unsigned *min_cycle_time)
1696 int new_cycle_time, new_latency;
1701 /* First find the supported CAS latencies
1702 * Byte 18 for DDR SDRAM is interpreted:
1703 * bit 3 == CAS Latency = 3
1704 * bit 4 == CAS Latency = 4
1705 * bit 5 == CAS Latency = 5
1706 * bit 6 == CAS Latency = 6
1708 new_cycle_time = 0x500;
1711 latencies = spd_read_byte(spd_device, SPD_CAS_LAT);
1715 printk_raminit("\tlatencies: %08x\n", latencies);
1716 /* Compute the lowest cas latency which can be expressed in this
1717 * particular SPD EEPROM. You can store at most settings for 3
1718 * contiguous CAS latencies, so by taking the highest CAS
1719 * latency maked as supported in the SPD and subtracting 2 you
1720 * get the lowest expressable CAS latency. That latency is not
1721 * necessarily supported, but a (maybe invalid) entry exists
1724 latency = log2(latencies) - 2;
1726 /* Loop through and find a fast clock with a low latency */
1727 for (index = 0; index < 3; index++, latency++) {
1729 if ((latency < 3) || (latency > 6) ||
1730 (!(latencies & (1 << latency)))) {
1733 value = spd_read_byte(spd_device, latency_indicies[index]);
1738 printk_raminit("\tindex: %08x\n", index);
1739 printk_raminit("\t\tlatency: %08x\n", latency);
1740 printk_raminit("\t\tvalue1: %08x\n", value);
1742 value = convert_to_linear(value);
1744 printk_raminit("\t\tvalue2: %08x\n", value);
1746 /* Only increase the latency if we decrease the clock */
1747 if (value >= *min_cycle_time ) {
1748 if (value < new_cycle_time) {
1749 new_cycle_time = value;
1750 new_latency = latency;
1751 } else if (value == new_cycle_time) {
1752 if (new_latency > latency) {
1753 new_latency = latency;
1757 printk_raminit("\t\tnew_cycle_time: %08x\n", new_cycle_time);
1758 printk_raminit("\t\tnew_latency: %08x\n", new_latency);
1762 if (new_latency > 6){
1766 /* Does min_latency need to be increased? */
1767 if (new_cycle_time > *min_cycle_time) {
1768 *min_cycle_time = new_cycle_time;
1771 /* Does min_cycle_time need to be increased? */
1772 if (new_latency > *min_latency) {
1773 *min_latency = new_latency;
1776 printk_raminit("2 min_cycle_time: %08x\n", *min_cycle_time);
1777 printk_raminit("2 min_latency: %08x\n", *min_latency);
1782 static struct spd_set_memclk_result spd_set_memclk(const struct mem_controller *ctrl, struct mem_info *meminfo)
1784 /* Compute the minimum cycle time for these dimms */
1785 struct spd_set_memclk_result result;
1786 unsigned min_cycle_time, min_latency, bios_cycle_time;
1790 static const uint16_t min_cycle_times[] = { // use full speed to compare
1791 [NBCAP_MEMCLK_NOLIMIT] = 0x250, /*2.5ns */
1792 [NBCAP_MEMCLK_333MHZ] = 0x300, /* 3.0ns */
1793 [NBCAP_MEMCLK_266MHZ] = 0x375, /* 3.75ns */
1794 [NBCAP_MEMCLK_200MHZ] = 0x500, /* 5.0s */
1798 value = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP);
1799 min_cycle_time = min_cycle_times[(value >> NBCAP_MEMCLK_SHIFT) & NBCAP_MEMCLK_MASK];
1800 bios_cycle_time = min_cycle_times[
1801 read_option(CMOS_VSTART_max_mem_clock, CMOS_VLEN_max_mem_clock, 0)];
1802 if (bios_cycle_time > min_cycle_time) {
1803 min_cycle_time = bios_cycle_time;
1807 printk_raminit("1 min_cycle_time: %08x\n", min_cycle_time);
1809 /* Compute the least latency with the fastest clock supported
1810 * by both the memory controller and the dimms.
1812 for (i = 0; i < DIMM_SOCKETS; i++) {
1815 printk_raminit("1.1 dimm_mask: %08x\n", meminfo->dimm_mask);
1816 printk_raminit("i: %08x\n",i);
1818 if (meminfo->dimm_mask & (1 << i)) {
1819 spd_device = ctrl->channel0[i];
1820 printk_raminit("Channel 0 settings:\n");
1822 switch (find_optimum_spd_latency(spd_device, &min_latency, &min_cycle_time)) {
1830 if (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) {
1831 spd_device = ctrl->channel1[i];
1832 printk_raminit("Channel 1 settings:\n");
1834 switch (find_optimum_spd_latency(spd_device, &min_latency, &min_cycle_time)) {
1844 /* Make a second pass through the dimms and disable
1845 * any that cannot support the selected memclk and cas latency.
1848 printk_raminit("3 min_cycle_time: %08x\n", min_cycle_time);
1849 printk_raminit("3 min_latency: %08x\n", min_latency);
1851 for (i = 0; (i < DIMM_SOCKETS); i++) {
1856 u32 spd_device = ctrl->channel0[i];
1858 if (!(meminfo->dimm_mask & (1 << i))) {
1859 if (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) { /* channelB only? */
1860 spd_device = ctrl->channel1[i];
1866 latencies = spd_read_byte(spd_device, SPD_CAS_LAT);
1867 if (latencies < 0) goto hw_error;
1868 if (latencies == 0) {
1872 /* Compute the lowest cas latency supported */
1873 latency = log2(latencies) -2;
1875 /* Walk through searching for the selected latency */
1876 for (index = 0; index < 3; index++, latency++) {
1877 if (!(latencies & (1 << latency))) {
1880 if (latency == min_latency)
1883 /* If I can't find the latency or my index is bad error */
1884 if ((latency != min_latency) || (index >= 3)) {
1888 /* Read the min_cycle_time for this latency */
1889 val = spd_read_byte(spd_device, latency_indicies[index]);
1890 if (val < 0) goto hw_error;
1892 val = convert_to_linear(val);
1893 /* All is good if the selected clock speed
1894 * is what I need or slower.
1896 if (val <= min_cycle_time) {
1899 /* Otherwise I have an error, disable the dimm */
1901 meminfo->dimm_mask = disable_dimm(ctrl, i, meminfo);
1904 printk_raminit("4 min_cycle_time: %08x\n", min_cycle_time);
1906 /* Now that I know the minimum cycle time lookup the memory parameters */
1907 result.param = get_mem_param(min_cycle_time);
1909 /* Update DRAM Config High with our selected memory speed */
1910 value = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH);
1911 value &= ~(DCH_MemClkFreq_MASK << DCH_MemClkFreq_SHIFT);
1913 value |= result.param->dch_memclk << DCH_MemClkFreq_SHIFT;
1914 pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, value);
1916 printk_debug("%s\n", result.param->name);
1918 /* Update DRAM Timing Low with our selected cas latency */
1919 value = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW);
1920 value &= ~(DTL_TCL_MASK << DTL_TCL_SHIFT);
1921 value |= (min_latency - DTL_TCL_BASE) << DTL_TCL_SHIFT;
1922 pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, value);
1924 result.dimm_mask = meminfo->dimm_mask;
1927 result.param = (const struct mem_param *)0;
1928 result.dimm_mask = -1;
1932 static unsigned convert_to_1_4(unsigned value)
1934 static const uint8_t fraction[] = { 0, 1, 2, 2, 3, 3, 0 };
1937 /* We need to convert value to more readable */
1938 valuex = fraction [value & 0x7];
1942 int get_dimm_Trc_clocks(u32 spd_device, const struct mem_param *param)
1947 value = spd_read_byte(spd_device, SPD_TRC);
1950 printk_raminit("update_dimm_Trc: tRC (41) = %08x\n", value);
1952 value2 = spd_read_byte(spd_device, SPD_TRC -1);
1954 value += convert_to_1_4(value2>>4);
1957 printk_raminit("update_dimm_Trc: tRC final value = %i\n", value);
1959 clocks = (value + param->divisor - 1)/param->divisor;
1960 printk_raminit("update_dimm_Trc: clocks = %i\n", clocks);
1962 if (clocks < DTL_TRC_MIN) {
1963 #warning We should die here or at least disable this bank.
1964 printk_notice("update_dimm_Trc: can't refresh fast enough, "
1965 "want %i clocks, can %i clocks\n", clocks, DTL_TRC_MIN);
1966 clocks = DTL_TRC_MIN;
1971 static int update_dimm_Trc(const struct mem_controller *ctrl,
1972 const struct mem_param *param,
1973 int i, long dimm_mask)
1975 int clocks, old_clocks;
1977 u32 spd_device = ctrl->channel0[i];
1979 if (!(dimm_mask & (1 << i)) && (dimm_mask & (1 << (DIMM_SOCKETS + i)))) { /* channelB only? */
1980 spd_device = ctrl->channel1[i];
1983 clocks = get_dimm_Trc_clocks(spd_device, param);
1986 if (clocks > DTL_TRC_MAX) {
1989 printk_raminit("update_dimm_Trc: clocks after adjustment = %i\n", clocks);
1991 dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW);
1992 old_clocks = ((dtl >> DTL_TRC_SHIFT) & DTL_TRC_MASK) + DTL_TRC_BASE;
1993 if (old_clocks >= clocks) { //?? someone did it
1994 // clocks = old_clocks;
1997 dtl &= ~(DTL_TRC_MASK << DTL_TRC_SHIFT);
1998 dtl |= ((clocks - DTL_TRC_BASE) << DTL_TRC_SHIFT);
1999 pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl);
2003 static int update_dimm_Trfc(const struct mem_controller *ctrl, const struct mem_param *param, int i, struct mem_info *meminfo)
2005 unsigned clocks, old_clocks;
2009 u32 spd_device = ctrl->channel0[i];
2011 if (!(meminfo->dimm_mask & (1 << i)) && (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i)))) { /* channelB only? */
2012 spd_device = ctrl->channel1[i];
2013 ch_b = 2; /* offset to channelB trfc setting */
2016 //get the cs_size --> logic dimm size
2017 value = spd_read_byte(spd_device, SPD_PRI_WIDTH);
2022 value = 6 - log2(value); //4-->4, 8-->3, 16-->2
2024 clocks = meminfo->sz[i].per_rank - 27 + 2 - value;
2026 dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH);
2028 old_clocks = ((dth >> (DTH_TRFC0_SHIFT + ((i + ch_b) * 3))) & DTH_TRFC_MASK);
2030 if (old_clocks >= clocks) { // some one did it?
2033 dth &= ~(DTH_TRFC_MASK << (DTH_TRFC0_SHIFT + ((i + ch_b) * 3)));
2034 dth |= clocks << (DTH_TRFC0_SHIFT + ((i + ch_b) * 3));
2035 pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth);
2039 static int update_dimm_TT_1_4(const struct mem_controller *ctrl, const struct mem_param *param, int i, long dimm_mask,
2041 unsigned SPD_TT, unsigned TT_SHIFT, unsigned TT_MASK, unsigned TT_BASE, unsigned TT_MIN, unsigned TT_MAX )
2043 unsigned clocks, old_clocks;
2046 u32 spd_device = ctrl->channel0[i];
2048 if (!(dimm_mask & (1 << i)) && (dimm_mask & (1 << (DIMM_SOCKETS + i)))) { /* channelB only? */
2049 spd_device = ctrl->channel1[i];
2052 value = spd_read_byte(spd_device, SPD_TT); //already in 1/4 ns
2053 if (value < 0) return -1;
2055 clocks = (value + param->divisor -1)/param->divisor;
2056 if (clocks < TT_MIN) {
2060 if (clocks > TT_MAX) {
2061 printk_info("warning spd byte : %x = %x > TT_MAX: %x, setting TT_MAX", SPD_TT, value, TT_MAX);
2065 dtl = pci_read_config32(ctrl->f2, TT_REG);
2067 old_clocks = ((dtl >> TT_SHIFT) & TT_MASK) + TT_BASE;
2068 if (old_clocks >= clocks) { //some one did it?
2069 // clocks = old_clocks;
2072 dtl &= ~(TT_MASK << TT_SHIFT);
2073 dtl |= ((clocks - TT_BASE) << TT_SHIFT);
2074 pci_write_config32(ctrl->f2, TT_REG, dtl);
2078 static int update_dimm_Trcd(const struct mem_controller *ctrl,
2079 const struct mem_param *param, int i, long dimm_mask)
2081 return update_dimm_TT_1_4(ctrl, param, i, dimm_mask, DRAM_TIMING_LOW, SPD_TRCD, DTL_TRCD_SHIFT, DTL_TRCD_MASK, DTL_TRCD_BASE, DTL_TRCD_MIN, DTL_TRCD_MAX);
2084 static int update_dimm_Trrd(const struct mem_controller *ctrl, const struct mem_param *param, int i, long dimm_mask)
2086 return update_dimm_TT_1_4(ctrl, param, i, dimm_mask, DRAM_TIMING_LOW, SPD_TRRD, DTL_TRRD_SHIFT, DTL_TRRD_MASK, DTL_TRRD_BASE, DTL_TRRD_MIN, DTL_TRRD_MAX);
2089 static int update_dimm_Tras(const struct mem_controller *ctrl, const struct mem_param *param, int i, long dimm_mask)
2091 unsigned clocks, old_clocks;
2094 u32 spd_device = ctrl->channel0[i];
2096 if (!(dimm_mask & (1 << i)) && (dimm_mask & (1 << (DIMM_SOCKETS + i)))) { /* channelB only? */
2097 spd_device = ctrl->channel1[i];
2100 value = spd_read_byte(spd_device, SPD_TRAS); //in 1 ns
2101 if (value < 0) return -1;
2102 printk_raminit("update_dimm_Tras: 0 value= %08x\n", value);
2104 value <<= 2; //convert it to in 1/4ns
2107 printk_raminit("update_dimm_Tras: 1 value= %08x\n", value);
2109 clocks = (value + param->divisor - 1)/param->divisor;
2110 printk_raminit("update_dimm_Tras: divisor= %08x\n", param->divisor);
2111 printk_raminit("update_dimm_Tras: clocks= %08x\n", clocks);
2112 if (clocks < DTL_TRAS_MIN) {
2113 clocks = DTL_TRAS_MIN;
2115 if (clocks > DTL_TRAS_MAX) {
2118 dtl = pci_read_config32(ctrl->f2, DRAM_TIMING_LOW);
2119 old_clocks = ((dtl >> DTL_TRAS_SHIFT) & DTL_TRAS_MASK) + DTL_TRAS_BASE;
2120 if (old_clocks >= clocks) { // someone did it?
2123 dtl &= ~(DTL_TRAS_MASK << DTL_TRAS_SHIFT);
2124 dtl |= ((clocks - DTL_TRAS_BASE) << DTL_TRAS_SHIFT);
2125 pci_write_config32(ctrl->f2, DRAM_TIMING_LOW, dtl);
2129 static int update_dimm_Trp(const struct mem_controller *ctrl,
2130 const struct mem_param *param, int i, long dimm_mask)
2132 return update_dimm_TT_1_4(ctrl, param, i, dimm_mask, DRAM_TIMING_LOW, SPD_TRP, DTL_TRP_SHIFT, DTL_TRP_MASK, DTL_TRP_BASE, DTL_TRP_MIN, DTL_TRP_MAX);
2136 static int update_dimm_Trtp(const struct mem_controller *ctrl,
2137 const struct mem_param *param, int i, struct mem_info *meminfo)
2139 /* need to figure if it is 32 byte burst or 64 bytes burst */
2141 if (!meminfo->is_Width128) {
2143 dword = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
2144 if ((dword & DCL_BurstLength32)) offset = 0;
2146 return update_dimm_TT_1_4(ctrl, param, i, meminfo->dimm_mask, DRAM_TIMING_LOW, SPD_TRTP, DTL_TRTP_SHIFT, DTL_TRTP_MASK, DTL_TRTP_BASE+offset, DTL_TRTP_MIN+offset, DTL_TRTP_MAX+offset);
2150 static int update_dimm_Twr(const struct mem_controller *ctrl, const struct mem_param *param, int i, long dimm_mask)
2152 return update_dimm_TT_1_4(ctrl, param, i, dimm_mask, DRAM_TIMING_LOW, SPD_TWR, DTL_TWR_SHIFT, DTL_TWR_MASK, DTL_TWR_BASE, DTL_TWR_MIN, DTL_TWR_MAX);
2156 static int update_dimm_Tref(const struct mem_controller *ctrl,
2157 const struct mem_param *param, int i, long dimm_mask)
2159 uint32_t dth, dth_old;
2161 u32 spd_device = ctrl->channel0[i];
2163 if (!(dimm_mask & (1 << i)) && (dimm_mask & (1 << (DIMM_SOCKETS + i)))) { /* channelB only? */
2164 spd_device = ctrl->channel1[i];
2167 value = spd_read_byte(spd_device, SPD_TREF); // 0: 15.625us, 1: 3.9us 2: 7.8 us....
2168 if (value < 0) return -1;
2176 dth = pci_read_config32(ctrl->f2, DRAM_TIMING_HIGH);
2179 dth &= ~(DTH_TREF_MASK << DTH_TREF_SHIFT);
2180 dth |= (value << DTH_TREF_SHIFT);
2181 if (dth_old != dth) {
2182 pci_write_config32(ctrl->f2, DRAM_TIMING_HIGH, dth);
2187 static void set_4RankRDimm(const struct mem_controller *ctrl,
2188 const struct mem_param *param, struct mem_info *meminfo)
2190 #if QRANK_DIMM_SUPPORT == 1
2193 long dimm_mask = meminfo->dimm_mask;
2196 if (!(meminfo->is_registered)) return;
2200 for (i = 0; i < DIMM_SOCKETS; i++) {
2201 if (!(dimm_mask & (1 << i))) {
2205 if (meminfo->sz[i].rank == 4) {
2213 dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH);
2214 dch |= DCH_FourRankRDimm;
2215 pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch);
2220 static uint32_t get_extra_dimm_mask(const struct mem_controller *ctrl,
2221 struct mem_info *meminfo)
2227 uint32_t mask_single_rank;
2228 uint32_t mask_page_1k;
2230 #if QRANK_DIMM_SUPPORT == 1
2234 long dimm_mask = meminfo->dimm_mask;
2239 mask_single_rank = 0;
2242 for (i = 0; i < DIMM_SOCKETS; i++) {
2243 u32 spd_device = ctrl->channel0[i];
2244 if (!(dimm_mask & (1 << i))) {
2245 if (dimm_mask & (1 << (DIMM_SOCKETS + i))) { /* channelB only? */
2246 spd_device = ctrl->channel1[i];
2252 if (meminfo->sz[i].rank == 1) {
2253 mask_single_rank |= 1<<i;
2256 if (meminfo->sz[i].col==10) {
2257 mask_page_1k |= 1<<i;
2261 value = spd_read_byte(spd_device, SPD_PRI_WIDTH);
2263 #if QRANK_DIMM_SUPPORT == 1
2264 rank = meminfo->sz[i].rank;
2269 #if QRANK_DIMM_SUPPORT == 1
2271 mask_x4 |= 1<<(i+2);
2274 } else if (value==16) {
2276 #if QRANK_DIMM_SUPPORT == 1
2278 mask_x16 |= 1<<(i+2);
2285 meminfo->x4_mask= mask_x4;
2286 meminfo->x16_mask = mask_x16;
2288 meminfo->single_rank_mask = mask_single_rank;
2289 meminfo->page_1k_mask = mask_page_1k;
2296 static void set_dimm_x4(const struct mem_controller *ctrl, const struct mem_param *param, struct mem_info *meminfo)
2299 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
2300 dcl &= ~(DCL_X4Dimm_MASK<<DCL_X4Dimm_SHIFT);
2301 dcl |= ((meminfo->x4_mask) & 0xf) << (DCL_X4Dimm_SHIFT);
2302 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
2306 static int count_ones(uint32_t dimm_mask)
2311 for (index = 0; index < (2 * DIMM_SOCKETS); index++, dimm_mask >>= 1) {
2312 if (dimm_mask & 1) {
2320 static void set_DramTerm(const struct mem_controller *ctrl,
2321 const struct mem_param *param, struct mem_info *meminfo)
2327 if (param->divisor == 100) { //DDR2 800
2328 if (meminfo->is_Width128) {
2329 if (count_ones(meminfo->dimm_mask & 0x0f)==2) {
2337 #if CONFIG_DIMM_SUPPORT == 0x0204
2338 odt = 0x2; /* 150 ohms */
2341 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
2342 dcl &= ~(DCL_DramTerm_MASK<<DCL_DramTerm_SHIFT);
2343 dcl |= (odt & DCL_DramTerm_MASK) << (DCL_DramTerm_SHIFT);
2344 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
2347 static void set_ecc(const struct mem_controller *ctrl,
2348 const struct mem_param *param, struct mem_info *meminfo)
2353 uint32_t dcl, nbcap;
2354 nbcap = pci_read_config32(ctrl->f3, NORTHBRIDGE_CAP);
2355 dcl = pci_read_config32(ctrl->f2, DRAM_CONFIG_LOW);
2356 dcl &= ~DCL_DimmEccEn;
2357 if (nbcap & NBCAP_ECC) {
2358 dcl |= DCL_DimmEccEn;
2360 if (read_option(CMOS_VSTART_ECC_memory, CMOS_VLEN_ECC_memory, 1) == 0) {
2361 dcl &= ~DCL_DimmEccEn;
2363 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
2365 meminfo->is_ecc = 1;
2366 if (!(dcl & DCL_DimmEccEn)) {
2367 meminfo->is_ecc = 0;
2368 return; // already disabled the ECC, so don't need to read SPD any more
2371 for (i = 0; i < DIMM_SOCKETS; i++) {
2372 u32 spd_device = ctrl->channel0[i];
2373 if (!(meminfo->dimm_mask & (1 << i))) {
2374 if (meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) { /* channelB only? */
2375 spd_device = ctrl->channel1[i];
2376 printk_debug("set_ecc spd_device: 0x%x\n", spd_device);
2382 value = spd_read_byte(ctrl->channel0[i], SPD_DIMM_CONF_TYPE);
2384 if (!(value & SPD_DIMM_CONF_TYPE_ECC)) {
2385 dcl &= ~DCL_DimmEccEn;
2386 pci_write_config32(ctrl->f2, DRAM_CONFIG_LOW, dcl);
2387 meminfo->is_ecc = 0;
2395 static int update_dimm_Twtr(const struct mem_controller *ctrl,
2396 const struct mem_param *param, int i, long dimm_mask)
2398 return update_dimm_TT_1_4(ctrl, param, i, dimm_mask, DRAM_TIMING_HIGH, SPD_TWTR, DTH_TWTR_SHIFT, DTH_TWTR_MASK, DTH_TWTR_BASE, DTH_TWTR_MIN, DTH_TWTR_MAX);
2401 static void set_TT(const struct mem_controller *ctrl,
2402 const struct mem_param *param, unsigned TT_REG, unsigned TT_SHIFT,
2403 unsigned TT_MASK, unsigned TT_BASE, unsigned TT_MIN, unsigned TT_MAX,
2404 unsigned val, const char *str)
2408 if ((val < TT_MIN) || (val > TT_MAX)) {
2413 reg = pci_read_config32(ctrl->f2, TT_REG);
2414 reg &= ~(TT_MASK << TT_SHIFT);
2415 reg |= ((val - TT_BASE) << TT_SHIFT);
2416 pci_write_config32(ctrl->f2, TT_REG, reg);
2421 static void set_TrwtTO(const struct mem_controller *ctrl,
2422 const struct mem_param *param)
2424 set_TT(ctrl, param, DRAM_TIMING_HIGH, DTH_TRWTTO_SHIFT, DTH_TRWTTO_MASK,DTH_TRWTTO_BASE, DTH_TRWTTO_MIN, DTH_TRWTTO_MAX, param->TrwtTO, "TrwtTO");
2428 static void set_Twrrd(const struct mem_controller *ctrl, const struct mem_param *param)
2430 set_TT(ctrl, param, DRAM_TIMING_HIGH, DTH_TWRRD_SHIFT, DTH_TWRRD_MASK,DTH_TWRRD_BASE, DTH_TWRRD_MIN, DTH_TWRRD_MAX, param->Twrrd, "Twrrd");
2434 static void set_Twrwr(const struct mem_controller *ctrl, const struct mem_param *param)
2436 set_TT(ctrl, param, DRAM_TIMING_HIGH, DTH_TWRWR_SHIFT, DTH_TWRWR_MASK,DTH_TWRWR_BASE, DTH_TWRWR_MIN, DTH_TWRWR_MAX, param->Twrwr, "Twrwr");
2439 static void set_Trdrd(const struct mem_controller *ctrl, const struct mem_param *param)
2441 set_TT(ctrl, param, DRAM_TIMING_HIGH, DTH_TRDRD_SHIFT, DTH_TRDRD_MASK,DTH_TRDRD_BASE, DTH_TRDRD_MIN, DTH_TRDRD_MAX, param->Trdrd, "Trdrd");
2444 static void set_DcqBypassMax(const struct mem_controller *ctrl, const struct mem_param *param)
2446 set_TT(ctrl, param, DRAM_CONFIG_HIGH, DCH_DcqBypassMax_SHIFT, DCH_DcqBypassMax_MASK,DCH_DcqBypassMax_BASE, DCH_DcqBypassMax_MIN, DCH_DcqBypassMax_MAX, param->DcqByPassMax, "DcqBypassMax"); // value need to be in CMOS
2449 static void set_Tfaw(const struct mem_controller *ctrl, const struct mem_param *param, struct mem_info *meminfo)
2451 static const uint8_t faw_1k[] = {8, 10, 13, 14};
2452 static const uint8_t faw_2k[] = {10, 14, 17, 18};
2453 unsigned memclkfreq_index;
2457 memclkfreq_index = param->dch_memclk;
2459 if (meminfo->page_1k_mask != 0) { //1k page
2460 faw = faw_1k[memclkfreq_index];
2462 faw = faw_2k[memclkfreq_index];
2465 set_TT(ctrl, param, DRAM_CONFIG_HIGH, DCH_FourActWindow_SHIFT, DCH_FourActWindow_MASK, DCH_FourActWindow_BASE, DCH_FourActWindow_MIN, DCH_FourActWindow_MAX, faw, "FourActWindow");
2468 static void set_max_async_latency(const struct mem_controller *ctrl, const struct mem_param *param)
2474 dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH);
2475 dch &= ~(DCH_MaxAsyncLat_MASK << DCH_MaxAsyncLat_SHIFT);
2477 //FIXME: We need to use Max of DqsRcvEnDelay + 6ns here: After trainning and get that from index reg 0x10, 0x13, 0x16, 0x19, 0x30, 0x33, 0x36, 0x39
2481 dch |= ((async_lat - DCH_MaxAsyncLat_BASE) << DCH_MaxAsyncLat_SHIFT);
2482 pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch);
2485 static void set_SlowAccessMode(const struct mem_controller *ctrl)
2489 dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH);
2493 pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch);
2497 DRAM_OUTPUT_DRV_COMP_CTRL 0, 0x20
2498 DRAM_ADDR_TIMING_CTRL 04, 0x24
2500 static void set_misc_timing(const struct mem_controller *ctrl, struct mem_info *meminfo)
2504 #if (CONFIG_DIMM_SUPPORT & 0x0100)==0x0000 /* 2T mode only used for unbuffered DIMM */
2505 unsigned SlowAccessMode = 0;
2508 long dimm_mask = meminfo->dimm_mask & 0x0f;
2510 #if CONFIG_DIMM_SUPPORT==0x0104 /* DDR2 and REG */
2513 dwordx = 0x002f0000;
2514 switch (meminfo->memclk_set) {
2515 case DCH_MemClkFreq_266MHz:
2516 if ( (dimm_mask == 0x03) || (dimm_mask == 0x02) || (dimm_mask == 0x01)) {
2517 dwordx = 0x002f2700;
2520 case DCH_MemClkFreq_333MHz:
2521 if ( (dimm_mask == 0x03) || (dimm_mask == 0x02) || (dimm_mask == 0x01)) {
2522 if ((meminfo->single_rank_mask & 0x03)!=0x03) { //any double rank there?
2523 dwordx = 0x002f2f00;
2527 case DCH_MemClkFreq_400MHz:
2528 dwordx = 0x002f3300;
2534 #if CONFIG_DIMM_SUPPORT==0x0204 /* DDR2 and SO-DIMM, S1G1 */
2536 dwordx = 0x002F2F00;
2538 switch (meminfo->memclk_set) {
2539 case DCH_MemClkFreq_200MHz: /* nothing to be set here */
2541 case DCH_MemClkFreq_266MHz:
2542 if ((meminfo->single_rank_mask == 0)
2543 && (meminfo->x4_mask == 0) && (meminfo->x16_mask))
2544 dwordx = 0x002C2C00; /* Double rank x8 */
2545 /* else SRx16, SRx8, DRx16 == 0x002F2F00 */
2547 case DCH_MemClkFreq_333MHz:
2548 if ((meminfo->single_rank_mask == 1)
2549 && (meminfo->x16_mask == 1)) /* SR x16 */
2550 dwordx = 0x00272700;
2551 else if ((meminfo->x4_mask == 0) && (meminfo->x16_mask == 0)
2552 && (meminfo->single_rank_mask == 0)) { /* DR x8 */
2554 dwordx = 0x00002800;
2555 } else { /* SR x8, DR x16 */
2556 dwordx = 0x002A2A00;
2559 case DCH_MemClkFreq_400MHz:
2560 if ((meminfo->single_rank_mask == 1)
2561 && (meminfo->x16_mask == 1)) /* SR x16 */
2562 dwordx = 0x00292900;
2563 else if ((meminfo->x4_mask == 0) && (meminfo->x16_mask == 0)
2564 && (meminfo->single_rank_mask == 0)) { /* DR x8 */
2566 dwordx = 0x00002A00;
2567 } else { /* SR x8, DR x16 */
2568 dwordx = 0x002A2A00;
2574 #if CONFIG_DIMM_SUPPORT==0x0004 /* DDR2 and unbuffered */
2575 /* for UNBUF DIMM */
2577 dwordx = 0x002f2f00;
2578 switch (meminfo->memclk_set) {
2579 case DCH_MemClkFreq_200MHz:
2580 if (dimm_mask == 0x03) {
2585 case DCH_MemClkFreq_266MHz:
2586 if (dimm_mask == 0x03) {
2589 if ((meminfo->x4_mask == 0 ) && (meminfo->x16_mask == 0)) {
2590 switch (meminfo->single_rank_mask) {
2592 dwordx = 0x00002f00; //x8 single Rank
2595 dwordx = 0x00342f00; //x8 double Rank
2598 dwordx = 0x00372f00; //x8 single Rank and double Rank mixed
2600 } else if ((meminfo->x4_mask == 0 ) && (meminfo->x16_mask == 0x01) && (meminfo->single_rank_mask == 0x01)) {
2601 dwordx = 0x00382f00; //x8 Double Rank and x16 single Rank mixed
2602 } else if ((meminfo->x4_mask == 0 ) && (meminfo->x16_mask == 0x02) && (meminfo->single_rank_mask == 0x02)) {
2603 dwordx = 0x00382f00; //x16 single Rank and x8 double Rank mixed
2607 if ((meminfo->x4_mask == 0 ) && (meminfo->x16_mask == 0x00) && ((meminfo->single_rank_mask == 0x01)||(meminfo->single_rank_mask == 0x02))) { //x8 single rank
2608 dwordx = 0x002f2f00;
2610 dwordx = 0x002b2f00;
2614 case DCH_MemClkFreq_333MHz:
2615 dwordx = 0x00202220;
2616 if (dimm_mask == 0x03) {
2619 if ((meminfo->x4_mask == 0 ) && (meminfo->x16_mask == 0)) {
2620 switch (meminfo->single_rank_mask) {
2622 dwordx = 0x00302220; //x8 single Rank
2625 dwordx = 0x002b2220; //x8 double Rank
2628 dwordx = 0x002a2220; //x8 single Rank and double Rank mixed
2630 } else if ((meminfo->x4_mask == 0) && (meminfo->x16_mask == 0x01) && (meminfo->single_rank_mask == 0x01)) {
2631 dwordx = 0x002c2220; //x8 Double Rank and x16 single Rank mixed
2632 } else if ((meminfo->x4_mask == 0) && (meminfo->x16_mask == 0x02) && (meminfo->single_rank_mask == 0x02)) {
2633 dwordx = 0x002c2220; //x16 single Rank and x8 double Rank mixed
2637 case DCH_MemClkFreq_400MHz:
2638 dwordx = 0x00202520;
2640 if (dimm_mask == 0x03) {
2648 printk_raminit("\tdimm_mask = %08x\n", meminfo->dimm_mask);
2649 printk_raminit("\tx4_mask = %08x\n", meminfo->x4_mask);
2650 printk_raminit("\tx16_mask = %08x\n", meminfo->x16_mask);
2651 printk_raminit("\tsingle_rank_mask = %08x\n", meminfo->single_rank_mask);
2652 printk_raminit("\tODC = %08x\n", dword);
2653 printk_raminit("\tAddr Timing= %08x\n", dwordx);
2656 #if (CONFIG_DIMM_SUPPORT & 0x0100)==0x0000 /* 2T mode only used for unbuffered DIMM */
2657 if (SlowAccessMode) {
2658 set_SlowAccessMode(ctrl);
2662 if (!(meminfo->dimm_mask & 0x0F) && (meminfo->dimm_mask & 0xF0)) { /* channelB only? */
2663 /* Program the Output Driver Compensation Control Registers (Function 2:Offset 0x9c, index 0, 0x20) */
2664 pci_write_config32_index_wait(ctrl->f2, 0x98, 0x20, dword);
2666 /* Program the Address Timing Control Registers (Function 2:Offset 0x9c, index 4, 0x24) */
2667 pci_write_config32_index_wait(ctrl->f2, 0x98, 0x24, dwordx);
2669 /* Program the Output Driver Compensation Control Registers (Function 2:Offset 0x9c, index 0, 0x20) */
2670 pci_write_config32_index_wait(ctrl->f2, 0x98, 0, dword);
2671 if (meminfo->is_Width128) {
2672 pci_write_config32_index_wait(ctrl->f2, 0x98, 0x20, dword);
2675 /* Program the Address Timing Control Registers (Function 2:Offset 0x9c, index 4, 0x24) */
2676 pci_write_config32_index_wait(ctrl->f2, 0x98, 4, dwordx);
2677 if (meminfo->is_Width128) {
2678 pci_write_config32_index_wait(ctrl->f2, 0x98, 0x24, dwordx);
2684 static void set_RDqsEn(const struct mem_controller *ctrl,
2685 const struct mem_param *param, struct mem_info *meminfo)
2687 #if CONFIG_CPU_SOCKET_TYPE==0x10
2688 //only need to set for reg and x8
2691 dch = pci_read_config32(ctrl->f2, DRAM_CONFIG_HIGH);
2694 if ((!meminfo->x4_mask) && (!meminfo->x16_mask)) {
2698 pci_write_config32(ctrl->f2, DRAM_CONFIG_HIGH, dch);
2702 static void set_idle_cycle_limit(const struct mem_controller *ctrl,
2703 const struct mem_param *param)
2706 /* AMD says to Hardcode this */
2707 dcm = pci_read_config32(ctrl->f2, DRAM_CTRL_MISC);
2708 dcm &= ~(DCM_ILD_lmt_MASK << DCM_ILD_lmt_SHIFT);
2709 dcm |= DCM_ILD_lmt_16 << DCM_ILD_lmt_SHIFT;
2711 pci_write_config32(ctrl->f2, DRAM_CTRL_MISC, dcm);
2714 static void set_RdWrQByp(const struct mem_controller *ctrl,
2715 const struct mem_param *param)
2717 set_TT(ctrl, param, DRAM_CTRL_MISC, DCM_RdWrQByp_SHIFT, DCM_RdWrQByp_MASK,0, 0, 3, 2, "RdWrQByp");
2720 static long spd_set_dram_timing(const struct mem_controller *ctrl,
2721 const struct mem_param *param,
2722 struct mem_info *meminfo)
2726 for (i = 0; i < DIMM_SOCKETS; i++) {
2728 if (!(meminfo->dimm_mask & (1 << i)) &&
2729 !(meminfo->dimm_mask & (1 << (DIMM_SOCKETS + i))) ) {
2732 printk_raminit("spd_set_dram_timing dimm socket: %08x\n", i);
2733 /* DRAM Timing Low Register */
2734 printk_raminit("\ttrc\n");
2735 if ((rc = update_dimm_Trc (ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2737 printk_raminit("\ttrcd\n");
2738 if ((rc = update_dimm_Trcd(ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2740 printk_raminit("\ttrrd\n");
2741 if ((rc = update_dimm_Trrd(ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2743 printk_raminit("\ttras\n");
2744 if ((rc = update_dimm_Tras(ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2746 printk_raminit("\ttrp\n");
2747 if ((rc = update_dimm_Trp (ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2749 printk_raminit("\ttrtp\n");
2750 if ((rc = update_dimm_Trtp(ctrl, param, i, meminfo)) <= 0) goto dimm_err;
2752 printk_raminit("\ttwr\n");
2753 if ((rc = update_dimm_Twr (ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2755 /* DRAM Timing High Register */
2756 printk_raminit("\ttref\n");
2757 if ((rc = update_dimm_Tref(ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2759 printk_raminit("\ttwtr\n");
2760 if ((rc = update_dimm_Twtr(ctrl, param, i, meminfo->dimm_mask)) <= 0) goto dimm_err;
2762 printk_raminit("\ttrfc\n");
2763 if ((rc = update_dimm_Trfc(ctrl, param, i, meminfo)) <= 0) goto dimm_err;
2765 /* DRAM Config Low */
2769 printk_debug("spd_set_dram_timing dimm_err!\n");
2773 meminfo->dimm_mask = disable_dimm(ctrl, i, meminfo);
2776 get_extra_dimm_mask(ctrl, meminfo); // will be used by RDqsEn and dimm_x4
2777 /* DRAM Timing Low Register */
2779 /* DRAM Timing High Register */
2780 set_TrwtTO(ctrl, param);
2781 set_Twrrd (ctrl, param);
2782 set_Twrwr (ctrl, param);
2783 set_Trdrd (ctrl, param);
2785 set_4RankRDimm(ctrl, param, meminfo);
2787 /* DRAM Config High */
2788 set_Tfaw(ctrl, param, meminfo);
2789 set_DcqBypassMax(ctrl, param);
2790 set_max_async_latency(ctrl, param);
2791 set_RDqsEn(ctrl, param, meminfo);
2793 /* DRAM Config Low */
2794 set_ecc(ctrl, param, meminfo);
2795 set_dimm_x4(ctrl, param, meminfo);
2796 set_DramTerm(ctrl, param, meminfo);
2798 /* DRAM Control Misc */
2799 set_idle_cycle_limit(ctrl, param);
2800 set_RdWrQByp(ctrl, param);
2802 return meminfo->dimm_mask;
2805 static void sdram_set_spd_registers(const struct mem_controller *ctrl,
2806 struct sys_info *sysinfo)
2808 struct spd_set_memclk_result result;
2809 const struct mem_param *param;
2810 struct mem_param paramx;
2811 struct mem_info *meminfo;
2813 if (!sysinfo->ctrl_present[ctrl->node_id]) {
2817 meminfo = &sysinfo->meminfo[ctrl->node_id];
2819 printk_debug("sdram_set_spd_registers: paramx :%p\n", ¶mx);
2821 activate_spd_rom(ctrl);
2822 meminfo->dimm_mask = spd_detect_dimms(ctrl);
2824 printk_raminit("sdram_set_spd_registers: dimm_mask=0x%x\n", meminfo->dimm_mask);
2826 if (!(meminfo->dimm_mask & ((1 << 2*DIMM_SOCKETS) - 1)))
2828 printk_debug("No memory for this cpu\n");
2831 meminfo->dimm_mask = spd_enable_2channels(ctrl, meminfo);
2832 printk_raminit("spd_enable_2channels: dimm_mask=0x%x\n", meminfo->dimm_mask);
2833 if (meminfo->dimm_mask == -1)
2836 meminfo->dimm_mask = spd_set_ram_size(ctrl, meminfo);
2837 printk_raminit("spd_set_ram_size: dimm_mask=0x%x\n", meminfo->dimm_mask);
2838 if (meminfo->dimm_mask == -1)
2841 meminfo->dimm_mask = spd_handle_unbuffered_dimms(ctrl, meminfo);
2842 printk_raminit("spd_handle_unbuffered_dimms: dimm_mask=0x%x\n", meminfo->dimm_mask);
2843 if (meminfo->dimm_mask == -1)
2846 result = spd_set_memclk(ctrl, meminfo);
2847 param = result.param;
2848 meminfo->dimm_mask = result.dimm_mask;
2849 printk_raminit("spd_set_memclk: dimm_mask=0x%x\n", meminfo->dimm_mask);
2850 if (meminfo->dimm_mask == -1)
2853 //store memclk set to sysinfo, incase we need rebuilt param again
2854 meminfo->memclk_set = param->dch_memclk;
2856 memcpy(¶mx, param, sizeof(paramx));
2858 paramx.divisor = get_exact_divisor(param->dch_memclk, paramx.divisor);
2860 meminfo->dimm_mask = spd_set_dram_timing(ctrl, ¶mx, meminfo);
2861 printk_raminit("spd_set_dram_timing: dimm_mask=0x%x\n", meminfo->dimm_mask);
2862 if (meminfo->dimm_mask == -1)
2865 order_dimms(ctrl, meminfo);
2869 /* Unrecoverable error reading SPD data */
2870 die("Unrecoverable error reading SPD data. No qualified DIMMs?");
2874 #define TIMEOUT_LOOPS 300000
2876 #include "raminit_f_dqs.c"
2878 #if CONFIG_HW_MEM_HOLE_SIZEK != 0
2879 static uint32_t hoist_memory(int controllers, const struct mem_controller *ctrl,unsigned hole_startk, int i)
2882 uint32_t carry_over;
2884 uint32_t base, limit;
2889 carry_over = (4*1024*1024) - hole_startk;
2891 for (ii=controllers - 1;ii>i;ii--) {
2892 base = pci_read_config32(ctrl[0].f1, 0x40 + (ii << 3));
2893 if ((base & ((1<<1)|(1<<0))) != ((1<<1)|(1<<0))) {
2896 limit = pci_read_config32(ctrl[0].f1, 0x44 + (ii << 3));
2897 limit += (carry_over << 2 );
2898 base += (carry_over << 2 );
2899 for (j = 0; j < controllers; j++) {
2900 pci_write_config32(ctrl[j].f1, 0x44 + (ii << 3), limit);
2901 pci_write_config32(ctrl[j].f1, 0x40 + (ii << 3), base );
2904 limit = pci_read_config32(ctrl[0].f1, 0x44 + (i << 3));
2905 limit += (carry_over << 2);
2906 for (j = 0; j < controllers; j++) {
2907 pci_write_config32(ctrl[j].f1, 0x44 + (i << 3), limit);
2910 base = pci_read_config32(dev, 0x40 + (i << 3));
2911 basek = (base & 0xffff0000) >> 2;
2912 if (basek == hole_startk) {
2913 //don't need set memhole here, because hole off set will be 0, overflow
2914 //so need to change base reg instead, new basek will be 4*1024*1024
2916 base |= (4*1024*1024)<<2;
2917 for (j = 0; j < controllers; j++) {
2918 pci_write_config32(ctrl[j].f1, 0x40 + (i<<3), base);
2921 hoist = /* hole start address */
2922 ((hole_startk << 10) & 0xff000000) +
2923 /* hole address to memory controller address */
2924 (((basek + carry_over) >> 6) & 0x0000ff00) +
2927 pci_write_config32(dev, 0xf0, hoist);
2933 static void set_hw_mem_hole(int controllers, const struct mem_controller *ctrl)
2936 uint32_t hole_startk;
2939 hole_startk = 4*1024*1024 - CONFIG_HW_MEM_HOLE_SIZEK;
2941 printk_raminit("Handling memory hole at 0x%08x (default)\n", hole_startk);
2942 #if CONFIG_HW_MEM_HOLE_SIZE_AUTO_INC == 1
2943 /* We need to double check if the hole_startk is valid, if it is equal
2944 to basek, we need to decrease it some */
2946 for (i=0; i<controllers; i++) {
2949 base = pci_read_config32(ctrl[0].f1, 0x40 + (i << 3));
2950 if ((base & ((1<<1)|(1<<0))) != ((1<<1)|(1<<0))) {
2953 base_k = (base & 0xffff0000) >> 2;
2954 if (base_k == hole_startk) {
2955 /* decrease mem hole startk to make sure it is
2956 on middle of previous node */
2957 hole_startk -= (base_k - basek_pri) >> 1;
2958 break; //only one hole
2962 printk_raminit("Handling memory hole at 0x%08x (adjusted)\n", hole_startk);
2964 /* find node index that need do set hole */
2965 for (i=0; i < controllers; i++) {
2966 uint32_t base, limit;
2967 unsigned base_k, limit_k;
2968 base = pci_read_config32(ctrl[0].f1, 0x40 + (i << 3));
2969 if ((base & ((1 << 1) | (1 << 0))) != ((1 << 1) | (1 << 0))) {
2972 limit = pci_read_config32(ctrl[0].f1, 0x44 + (i << 3));
2973 base_k = (base & 0xffff0000) >> 2;
2974 limit_k = ((limit + 0x00010000) & 0xffff0000) >> 2;
2975 if ((base_k <= hole_startk) && (limit_k > hole_startk)) {
2977 hoist_memory(controllers, ctrl, hole_startk, i);
2978 end_k = memory_end_k(ctrl, controllers);
2979 set_top_mem(end_k, hole_startk);
2980 break; //only one hole
2987 #include "exit_from_self.c"
2989 static void sdram_enable(int controllers, const struct mem_controller *ctrl,
2990 struct sys_info *sysinfo)
2993 #ifdef ACPI_IS_WAKEUP_EARLY
2994 int suspend = acpi_is_wakeup_early();
2999 #if K8_REV_F_SUPPORT_F0_F1_WORKAROUND == 1
3000 unsigned cpu_f0_f1[8];
3001 /* FIXME: How about 32 node machine later? */
3004 printk_debug("sdram_enable: tsc0[8]: %p", &tsc0[0]);
3008 /* Error if I don't have memory */
3009 if (memory_end_k(ctrl, controllers) == 0) {
3013 /* Before enabling memory start the memory clocks */
3014 for (i = 0; i < controllers; i++) {
3016 if (!sysinfo->ctrl_present[ i ])
3018 dch = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_HIGH);
3020 /* if no memory installed, disabled the interface */
3021 if (sysinfo->meminfo[i].dimm_mask==0x00){
3022 dch |= DCH_DisDramInterface;
3023 pci_write_config32(ctrl[i].f2, DRAM_CONFIG_HIGH, dch);
3026 dch |= DCH_MemClkFreqVal;
3027 pci_write_config32(ctrl[i].f2, DRAM_CONFIG_HIGH, dch);
3028 /* address timing and Output driver comp Control */
3029 set_misc_timing(ctrl+i, sysinfo->meminfo+i );
3033 /* We need to wait a minimum of 20 MEMCLKS to enable the InitDram */
3034 memreset(controllers, ctrl);
3036 /* lets override the rest of the routine */
3038 printk_debug("Wakeup!\n");
3039 exit_from_self(controllers, ctrl, sysinfo);
3040 printk_debug("Mem running !\n");
3044 for (i = 0; i < controllers; i++) {
3046 if (!sysinfo->ctrl_present[ i ])
3048 /* Skip everything if I don't have any memory on this controller */
3049 dch = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_HIGH);
3050 if (!(dch & DCH_MemClkFreqVal)) {
3055 dcl = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_LOW);
3056 if (dcl & DCL_DimmEccEn) {
3058 printk_spew("ECC enabled\n");
3059 mnc = pci_read_config32(ctrl[i].f3, MCA_NB_CONFIG);
3061 if (dcl & DCL_Width128) {
3062 mnc |= MNC_CHIPKILL_EN;
3064 pci_write_config32(ctrl[i].f3, MCA_NB_CONFIG, mnc);
3067 #if K8_REV_F_SUPPORT_F0_F1_WORKAROUND == 1
3068 cpu_f0_f1[i] = is_cpu_pre_f2_in_bsp(i);
3070 //Rev F0/F1 workaround
3072 /* Set the DqsRcvEnTrain bit */
3073 dword = pci_read_config32(ctrl[i].f2, DRAM_CTRL);
3074 dword |= DC_DqsRcvEnTrain;
3075 pci_write_config32(ctrl[i].f2, DRAM_CTRL, dword);
3081 pci_write_config32(ctrl[i].f2, DRAM_CONFIG_LOW, dcl);
3082 dcl |= DCL_InitDram;
3083 pci_write_config32(ctrl[i].f2, DRAM_CONFIG_LOW, dcl);
3086 for (i = 0; i < controllers; i++) {
3088 if (!sysinfo->ctrl_present[ i ])
3090 /* Skip everything if I don't have any memory on this controller */
3091 if (sysinfo->meminfo[i].dimm_mask==0x00) continue;
3093 printk_debug("Initializing memory: ");
3096 dcl = pci_read_config32(ctrl[i].f2, DRAM_CONFIG_LOW);
3098 if ((loops & 1023) == 0) {
3101 } while(((dcl & DCL_InitDram) != 0) && (loops < TIMEOUT_LOOPS));
3102 if (loops >= TIMEOUT_LOOPS) {
3103 printk_debug(" failed\n");
3107 /* Wait until it is safe to touch memory */
3109 dcm = pci_read_config32(ctrl[i].f2, DRAM_CTRL_MISC);
3110 } while(((dcm & DCM_MemClrStatus) == 0) /* || ((dcm & DCM_DramEnabled) == 0)*/ );
3112 #if K8_REV_F_SUPPORT_F0_F1_WORKAROUND == 1
3116 print_debug_dqs_tsc("\nbegin tsc0", i, tsc0[i].hi, tsc0[i].lo, 2);
3117 print_debug_dqs_tsc("end tsc ", i, tsc.hi, tsc.lo, 2);
3119 if (tsc.lo<tsc0[i].lo) {
3122 tsc.lo -= tsc0[i].lo;
3123 tsc.hi -= tsc0[i].hi;
3125 tsc0[i].lo = tsc.lo;
3126 tsc0[i].hi = tsc.hi;
3128 print_debug_dqs_tsc(" dtsc0", i, tsc0[i].hi, tsc0[i].lo, 2);
3131 printk_debug(" done\n");
3134 #if CONFIG_HW_MEM_HOLE_SIZEK != 0
3135 /* init hw mem hole here */
3136 /* DramHoleValid bit only can be set after MemClrStatus is set by Hardware */
3137 set_hw_mem_hole(controllers, ctrl);
3140 /* store tom to sysinfo, and it will be used by dqs_timing */
3144 msr = rdmsr(TOP_MEM);
3145 sysinfo->tom_k = ((msr.hi<<24) | (msr.lo>>8))>>2;
3148 msr = rdmsr(TOP_MEM2);
3149 sysinfo->tom2_k = ((msr.hi<<24)| (msr.lo>>8))>>2;
3152 for (i = 0; i < controllers; i++) {
3153 sysinfo->mem_trained[i] = 0;
3155 if (!sysinfo->ctrl_present[ i ])
3158 /* Skip everything if I don't have any memory on this controller */
3159 if (sysinfo->meminfo[i].dimm_mask==0x00)
3162 sysinfo->mem_trained[i] = 0x80; // mem need to be trained
3166 #if CONFIG_MEM_TRAIN_SEQ == 0
3167 #if K8_REV_F_SUPPORT_F0_F1_WORKAROUND == 1
3168 dqs_timing(controllers, ctrl, tsc0, sysinfo);
3170 dqs_timing(controllers, ctrl, sysinfo);
3174 #if CONFIG_MEM_TRAIN_SEQ == 2
3175 /* need to enable mtrr, so dqs training could access the test address */
3176 setup_mtrr_dqs(sysinfo->tom_k, sysinfo->tom2_k);
3179 for (i = 0; i < controllers; i++) {
3180 /* Skip everything if I don't have any memory on this controller */
3181 if (sysinfo->mem_trained[i]!=0x80)
3184 dqs_timing(i, &ctrl[i], sysinfo, 1);
3186 #if CONFIG_MEM_TRAIN_SEQ == 1
3187 break; // only train the first node with ram
3191 #if CONFIG_MEM_TRAIN_SEQ == 2
3192 clear_mtrr_dqs(sysinfo->tom2_k);
3197 #if CONFIG_MEM_TRAIN_SEQ != 1
3198 wait_all_core0_mem_trained(sysinfo);
3203 static void fill_mem_ctrl(int controllers, struct mem_controller *ctrl_a,
3204 const uint16_t *spd_addr)
3208 struct mem_controller *ctrl;
3209 for (i=0;i<controllers; i++) {
3212 ctrl->f0 = PCI_DEV(0, 0x18+i, 0);
3213 ctrl->f1 = PCI_DEV(0, 0x18+i, 1);
3214 ctrl->f2 = PCI_DEV(0, 0x18+i, 2);
3215 ctrl->f3 = PCI_DEV(0, 0x18+i, 3);
3217 if (spd_addr == (void *)0) continue;
3219 for (j=0;j<DIMM_SOCKETS;j++) {
3220 ctrl->channel0[j] = spd_addr[(i*2+0)*DIMM_SOCKETS + j];
3221 ctrl->channel1[j] = spd_addr[(i*2+1)*DIMM_SOCKETS + j];