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sdram_init.c @ 55

Last change on this file since 55 was 55, checked in by Tim Harvey, 2 years ago

rincon: added latest u-boot source

restored form server backup

Signed-off-by: Tim Harvey <tharvey@…>

File size: 52.3 KB

Line
1	/*
2	* (C) Copyright 2001
3	* Josh Huber <huber@mclx.com>, Mission Critical Linux, Inc.
4	*
5	* See file CREDITS for list of people who contributed to this
6	* project.
7	*
8	* This program is free software; you can redistribute it and/or
9	* modify it under the terms of the GNU General Public License as
10	* published by the Free Software Foundation; either version 2 of
11	* the License, or (at your option) any later version.
12	*
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.
17	*
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., 59 Temple Place, Suite 330, Boston,
21	* MA 02111-1307 USA
22	*/
23
24	/*************************************************************************
25	* adaption for the Marvell DB64360 Board
26	* Ingo Assmus (ingo.assmus@keymile.com)
27	*
28	* adaption for the cpci750 Board
29	* Reinhard Arlt (reinhard.arlt@esd-electronics.com)
30	*************************************************************************/
31
32
33	/* sdram_init.c - automatic memory sizing */
34
35	#include <common.h>
36	#include <74xx_7xx.h>
37	#include "../../Marvell/include/memory.h"
38	#include "../../Marvell/include/pci.h"
39	#include "../../Marvell/include/mv_gen_reg.h"
40	#include <net.h>
41
42	#include "eth.h"
43	#include "mpsc.h"
44	#include "../../Marvell/common/i2c.h"
45	#include "64360.h"
46	#include "mv_regs.h"
47
48	DECLARE_GLOBAL_DATA_PTR;
49
50	#undef DEBUG
51	/* #define DEBUG */
52	#ifdef CONFIG_PCI
53	#define MAP_PCI
54	#endif /* of CONFIG_PCI */
55
56	#ifdef DEBUG
57	#define DP(x) x
58	#else
59	#define DP(x)
60	#endif
61
62	int set_dfcdlInit(void); /* setup delay line of Mv64360 */
63
64	/* ------------------------------------------------------------------------- */
65
66	int
67	memory_map_bank(unsigned int bankNo,
68	unsigned int bankBase,
69	unsigned int bankLength)
70	{
71	#ifdef MAP_PCI
72	PCI_HOST host;
73	#endif
74
75
76	#ifdef DEBUG
77	if (bankLength > 0) {
78	printf("mapping bank %d at %08x - %08x\n",
79	bankNo, bankBase, bankBase + bankLength - 1);
80	} else {
81	printf("unmapping bank %d\n", bankNo);
82	}
83	#endif
84
85	memoryMapBank(bankNo, bankBase, bankLength);
86
87	#ifdef MAP_PCI
88	for (host=PCI_HOST0;host<=PCI_HOST1;host++) {
89	const int features=
90	PREFETCH_ENABLE \|
91	DELAYED_READ_ENABLE \|
92	AGGRESSIVE_PREFETCH \|
93	READ_LINE_AGGRESSIVE_PREFETCH \|
94	READ_MULTI_AGGRESSIVE_PREFETCH \|
95	MAX_BURST_4 \|
96	PCI_NO_SWAP;
97
98	pciMapMemoryBank(host, bankNo, bankBase, bankLength);
99
100	pciSetRegionSnoopMode(host, bankNo, PCI_SNOOP_WB, bankBase,
101	bankLength);
102
103	pciSetRegionFeatures(host, bankNo, features, bankBase, bankLength);
104	}
105	#endif
106	return 0;
107	}
108
109	#define GB (1 << 30)
110
111	/* much of this code is based on (or is) the code in the pip405 port */
112	/* thanks go to the authors of said port - Josh */
113
114	/* structure to store the relevant information about an sdram bank */
115	typedef struct sdram_info {
116	uchar drb_size;
117	uchar registered, ecc;
118	uchar tpar;
119	uchar tras_clocks;
120	uchar burst_len;
121	uchar banks, slot;
122	} sdram_info_t;
123
124	/* Typedefs for 'gtAuxilGetDIMMinfo' function */
125
126	typedef enum _memoryType {SDRAM, DDR} MEMORY_TYPE;
127
128	typedef enum _voltageInterface {TTL_5V_TOLERANT, LVTTL, HSTL_1_5V,
129	SSTL_3_3V, SSTL_2_5V, VOLTAGE_UNKNOWN,
130	} VOLTAGE_INTERFACE;
131
132	typedef enum _max_CL_supported_DDR {DDR_CL_1=1, DDR_CL_1_5=2, DDR_CL_2=4, DDR_CL_2_5=8, DDR_CL_3=16, DDR_CL_3_5=32, DDR_CL_FAULT} MAX_CL_SUPPORTED_DDR;
133	typedef enum _max_CL_supported_SD {SD_CL_1=1, SD_CL_2, SD_CL_3, SD_CL_4, SD_CL_5, SD_CL_6, SD_CL_7, SD_FAULT} MAX_CL_SUPPORTED_SD;
134
135
136	/* SDRAM/DDR information struct */
137	typedef struct _gtMemoryDimmInfo {
138	MEMORY_TYPE memoryType;
139	unsigned int numOfRowAddresses;
140	unsigned int numOfColAddresses;
141	unsigned int numOfModuleBanks;
142	unsigned int dataWidth;
143	VOLTAGE_INTERFACE voltageInterface;
144	unsigned int errorCheckType; /* ECC , PARITY.. */
145	unsigned int sdramWidth; /* 4,8,16 or 32 */ ;
146	unsigned int errorCheckDataWidth; /* 0 - no, 1 - Yes */
147	unsigned int minClkDelay;
148	unsigned int burstLengthSupported;
149	unsigned int numOfBanksOnEachDevice;
150	unsigned int suportedCasLatencies;
151	unsigned int RefreshInterval;
152	unsigned int maxCASlatencySupported_LoP; /* LoP left of point (measured in ns) */
153	unsigned int maxCASlatencySupported_RoP; /* RoP right of point (measured in ns) */
154	MAX_CL_SUPPORTED_DDR maxClSupported_DDR;
155	MAX_CL_SUPPORTED_SD maxClSupported_SD;
156	unsigned int moduleBankDensity;
157	/* module attributes (true for yes) */
158	bool bufferedAddrAndControlInputs;
159	bool registeredAddrAndControlInputs;
160	bool onCardPLL;
161	bool bufferedDQMBinputs;
162	bool registeredDQMBinputs;
163	bool differentialClockInput;
164	bool redundantRowAddressing;
165
166	/* module general attributes */
167	bool suportedAutoPreCharge;
168	bool suportedPreChargeAll;
169	bool suportedEarlyRasPreCharge;
170	bool suportedWrite1ReadBurst;
171	bool suported5PercentLowVCC;
172	bool suported5PercentUpperVCC;
173	/* module timing parameters */
174	unsigned int minRasToCasDelay;
175	unsigned int minRowActiveRowActiveDelay;
176	unsigned int minRasPulseWidth;
177	unsigned int minRowPrechargeTime; /* measured in ns */
178
179	int addrAndCommandHoldTime; /* LoP left of point (measured in ns) */
180	int addrAndCommandSetupTime; /* (measured in ns/100) */
181	int dataInputSetupTime; /* LoP left of point (measured in ns) */
182	int dataInputHoldTime; /* LoP left of point (measured in ns) */
183	/* tAC times for highest 2nd and 3rd highest CAS Latency values */
184	unsigned int clockToDataOut_LoP; /* LoP left of point (measured in ns) */
185	unsigned int clockToDataOut_RoP; /* RoP right of point (measured in ns) */
186	unsigned int clockToDataOutMinus1_LoP; /* LoP left of point (measured in ns) */
187	unsigned int clockToDataOutMinus1_RoP; /* RoP right of point (measured in ns) */
188	unsigned int clockToDataOutMinus2_LoP; /* LoP left of point (measured in ns) */
189	unsigned int clockToDataOutMinus2_RoP; /* RoP right of point (measured in ns) */
190
191	unsigned int minimumCycleTimeAtMaxCasLatancy_LoP; /* LoP left of point (measured in ns) */
192	unsigned int minimumCycleTimeAtMaxCasLatancy_RoP; /* RoP right of point (measured in ns) */
193
194	unsigned int minimumCycleTimeAtMaxCasLatancyMinus1_LoP; /* LoP left of point (measured in ns) */
195	unsigned int minimumCycleTimeAtMaxCasLatancyMinus1_RoP; /* RoP right of point (measured in ns) */
196
197	unsigned int minimumCycleTimeAtMaxCasLatancyMinus2_LoP; /* LoP left of point (measured in ns) */
198	unsigned int minimumCycleTimeAtMaxCasLatancyMinus2_RoP; /* RoP right of point (measured in ns) */
199
200	/* Parameters calculated from
201	the extracted DIMM information */
202	unsigned int size;
203	unsigned int deviceDensity; /* 16,64,128,256 or 512 Mbit */
204	unsigned int numberOfDevices;
205	uchar drb_size; /* DRAM size in n64Mbit /
206	uchar slot; /* Slot Number this module is inserted in */
207	uchar spd_raw_data[128]; /* Content of SPD-EEPROM copied 1:1 */
208	#ifdef DEBUG
209	uchar manufactura[8]; /* Content of SPD-EEPROM Byte 64-71 */
210	uchar modul_id[18]; /* Content of SPD-EEPROM Byte 73-90 */
211	uchar vendor_data[27]; /* Content of SPD-EEPROM Byte 99-125 */
212	unsigned long modul_serial_no; /* Content of SPD-EEPROM Byte 95-98 */
213	unsigned int manufac_date; /* Content of SPD-EEPROM Byte 93-94 */
214	unsigned int modul_revision; /* Content of SPD-EEPROM Byte 91-92 */
215	uchar manufac_place; /* Content of SPD-EEPROM Byte 72 */
216
217	#endif
218	} AUX_MEM_DIMM_INFO;
219
220
221	/*
222	* translate ns.ns/10 coding of SPD timing values
223	* into 10 ps unit values
224	*/
225	static inline unsigned short
226	NS10to10PS(unsigned char spd_byte)
227	{
228	unsigned short ns, ns10;
229
230	/* isolate upper nibble */
231	ns = (spd_byte >> 4) & 0x0F;
232	/* isolate lower nibble */
233	ns10 = (spd_byte & 0x0F);
234
235	return(ns100 + ns1010);
236	}
237
238	/*
239	* translate ns coding of SPD timing values
240	* into 10 ps unit values
241	*/
242	static inline unsigned short
243	NSto10PS(unsigned char spd_byte)
244	{
245	return(spd_byte*100);
246	}
247
248	/* This code reads the SPD chip on the sdram and populates
249	* the array which is passed in with the relevant information */
250	/* static int check_dimm(uchar slot, AUX_MEM_DIMM_INFO info) /
251	static int check_dimm (uchar slot, AUX_MEM_DIMM_INFO * dimmInfo)
252	{
253	unsigned long spd_checksum;
254
255	uchar addr = slot == 0 ? DIMM0_I2C_ADDR : DIMM1_I2C_ADDR;
256	int ret;
257	unsigned int i, j, density = 1, devicesForErrCheck = 0;
258
259	#ifdef DEBUG
260	unsigned int k;
261	#endif
262	unsigned int rightOfPoint = 0, leftOfPoint = 0, mult, div, time_tmp;
263	int sign = 1, shift, maskLeftOfPoint, maskRightOfPoint;
264	uchar supp_cal, cal_val;
265	ulong memclk, tmemclk;
266	ulong tmp;
267	uchar trp_clocks = 0, trcd_clocks, tras_clocks, trrd_clocks;
268	uchar data[128];
269
270	memclk = gd->bus_clk;
271	tmemclk = 1000000000 / (memclk / 100); /* in 10 ps units */
272
273	memset (data, 0, sizeof (data));
274
275
276	ret = 0;
277
278	DP (puts ("before i2c read\n"));
279
280	ret = i2c_read (addr, 0, 2, data, 128);
281
282	DP (puts ("after i2c read\n"));
283
284	if ((data[64] != 'e') \|\| (data[65] != 's') \|\| (data[66] != 'd')
285	\|\| (data[67] != '-') \|\| (data[68] != 'g') \|\| (data[69] != 'm')
286	\|\| (data[70] != 'b') \|\| (data[71] != 'h')) {
287	ret = -1;
288	}
289
290	if ((ret != 0) && (slot == 0)) {
291	memset (data, 0, sizeof (data));
292	data[0] = 0x80;
293	data[1] = 0x08;
294	data[2] = 0x07;
295	data[3] = 0x0c;
296	data[4] = 0x09;
297	data[5] = 0x01;
298	data[6] = 0x48;
299	data[7] = 0x00;
300	data[8] = 0x04;
301	data[9] = 0x75;
302	data[10] = 0x80;
303	data[11] = 0x02;
304	data[12] = 0x80;
305	data[13] = 0x10;
306	data[14] = 0x08;
307	data[15] = 0x01;
308	data[16] = 0x0e;
309	data[17] = 0x04;
310	data[18] = 0x0c;
311	data[19] = 0x01;
312	data[20] = 0x02;
313	data[21] = 0x20;
314	data[22] = 0x00;
315	data[23] = 0xa0;
316	data[24] = 0x80;
317	data[25] = 0x00;
318	data[26] = 0x00;
319	data[27] = 0x50;
320	data[28] = 0x3c;
321	data[29] = 0x50;
322	data[30] = 0x32;
323	data[31] = 0x10;
324	data[32] = 0xb0;
325	data[33] = 0xb0;
326	data[34] = 0x60;
327	data[35] = 0x60;
328	data[64] = 'e';
329	data[65] = 's';
330	data[66] = 'd';
331	data[67] = '-';
332	data[68] = 'g';
333	data[69] = 'm';
334	data[70] = 'b';
335	data[71] = 'h';
336	ret = 0;
337	}
338
339	/* zero all the values */
340	memset (dimmInfo, 0, sizeof (*dimmInfo));
341
342	/* copy the SPD content 1:1 into the dimmInfo structure */
343	for (i = 0; i <= 127; i++) {
344	dimmInfo->spd_raw_data[i] = data[i];
345	}
346
347	if (ret) {
348	DP (printf ("No DIMM in slot %d [err = %x]\n", slot, ret));
349	return 0;
350	} else
351	dimmInfo->slot = slot; /* start to fill up dimminfo for this "slot" */
352
353	#ifdef CFG_DISPLAY_DIMM_SPD_CONTENT
354
355	for (i = 0; i <= 127; i++) {
356	printf ("SPD-EEPROM Byte %3d = %3x (%3d)\n", i, data[i],
357	data[i]);
358	}
359
360	#endif
361	#ifdef DEBUG
362	/* find Manufacturer of Dimm Module */
363	for (i = 0; i < sizeof (dimmInfo->manufactura); i++) {
364	dimmInfo->manufactura[i] = data[64 + i];
365	}
366	printf ("\nThis RAM-Module is produced by: %s\n",
367	dimmInfo->manufactura);
368
369	/* find Manul-ID of Dimm Module */
370	for (i = 0; i < sizeof (dimmInfo->modul_id); i++) {
371	dimmInfo->modul_id[i] = data[73 + i];
372	}
373	printf ("The Module-ID of this RAM-Module is: %s\n",
374	dimmInfo->modul_id);
375
376	/* find Vendor-Data of Dimm Module */
377	for (i = 0; i < sizeof (dimmInfo->vendor_data); i++) {
378	dimmInfo->vendor_data[i] = data[99 + i];
379	}
380	printf ("Vendor Data of this RAM-Module is: %s\n",
381	dimmInfo->vendor_data);
382
383	/* find modul_serial_no of Dimm Module */
384	dimmInfo->modul_serial_no = (((unsigned long ) (&data[95])));
385	printf ("Serial No. of this RAM-Module is: %ld (%lx)\n",
386	dimmInfo->modul_serial_no, dimmInfo->modul_serial_no);
387
388	/* find Manufac-Data of Dimm Module */
389	dimmInfo->manufac_date = (((unsigned int ) (&data[93])));
390	printf ("Manufactoring Date of this RAM-Module is: %d.%d\n", data[93], data[94]); /dimmInfo->manufac_date /
391
392	/* find modul_revision of Dimm Module */
393	dimmInfo->modul_revision = (((unsigned int ) (&data[91])));
394	printf ("Module Revision of this RAM-Module is: %d.%d\n", data[91], data[92]); /* dimmInfo->modul_revision */
395
396	/* find manufac_place of Dimm Module */
397	dimmInfo->manufac_place = (((unsigned char ) (&data[72])));
398	printf ("manufac_place of this RAM-Module is: %d\n",
399	dimmInfo->manufac_place);
400
401	#endif
402	/------------------------------------------------------------------------------------------------------------------------------/
403	/* calculate SPD checksum */
404	/------------------------------------------------------------------------------------------------------------------------------/
405	spd_checksum = 0;
406	#if 0 /* test-only */
407	for (i = 0; i <= 62; i++) {
408	spd_checksum += data[i];
409	}
410
411	if ((spd_checksum & 0xff) != data[63]) {
412	printf ("### Error in SPD Checksum !!! Is_value: %2x should value %2x\n", (unsigned int) (spd_checksum & 0xff), data[63]);
413	hang ();
414	}
415
416	else
417	printf ("SPD Checksum ok!\n");
418	#endif /* test-only */
419
420	/------------------------------------------------------------------------------------------------------------------------------/
421	for (i = 2; i <= 35; i++) {
422	switch (i) {
423	case 2: /* Memory type (DDR / SDRAM) */
424	dimmInfo->memoryType = (data[i] == 0x7) ? DDR : SDRAM;
425	#ifdef DEBUG
426	if (dimmInfo->memoryType == 0)
427	DP (printf
428	("Dram_type in slot %d is: SDRAM\n",
429	dimmInfo->slot));
430	if (dimmInfo->memoryType == 1)
431	DP (printf
432	("Dram_type in slot %d is: DDRAM\n",
433	dimmInfo->slot));
434	#endif
435	break;
436	/------------------------------------------------------------------------------------------------------------------------------/
437
438	case 3: /* Number Of Row Addresses */
439	dimmInfo->numOfRowAddresses = data[i];
440	DP (printf
441	("Module Number of row addresses: %d\n",
442	dimmInfo->numOfRowAddresses));
443	break;
444	/------------------------------------------------------------------------------------------------------------------------------/
445
446	case 4: /* Number Of Column Addresses */
447	dimmInfo->numOfColAddresses = data[i];
448	DP (printf
449	("Module Number of col addresses: %d\n",
450	dimmInfo->numOfColAddresses));
451	break;
452	/------------------------------------------------------------------------------------------------------------------------------/
453
454	case 5: /* Number Of Module Banks */
455	dimmInfo->numOfModuleBanks = data[i];
456	DP (printf
457	("Number of Banks on Mod. : %d\n",
458	dimmInfo->numOfModuleBanks));
459	break;
460	/------------------------------------------------------------------------------------------------------------------------------/
461
462	case 6: /* Data Width */
463	dimmInfo->dataWidth = data[i];
464	DP (printf
465	("Module Data Width: %d\n",
466	dimmInfo->dataWidth));
467	break;
468	/------------------------------------------------------------------------------------------------------------------------------/
469
470	case 8: /* Voltage Interface */
471	switch (data[i]) {
472	case 0x0:
473	dimmInfo->voltageInterface = TTL_5V_TOLERANT;
474	DP (printf
475	("Module is TTL_5V_TOLERANT\n"));
476	break;
477	case 0x1:
478	dimmInfo->voltageInterface = LVTTL;
479	DP (printf
480	("Module is LVTTL\n"));
481	break;
482	case 0x2:
483	dimmInfo->voltageInterface = HSTL_1_5V;
484	DP (printf
485	("Module is TTL_5V_TOLERANT\n"));
486	break;
487	case 0x3:
488	dimmInfo->voltageInterface = SSTL_3_3V;
489	DP (printf
490	("Module is HSTL_1_5V\n"));
491	break;
492	case 0x4:
493	dimmInfo->voltageInterface = SSTL_2_5V;
494	DP (printf
495	("Module is SSTL_2_5V\n"));
496	break;
497	default:
498	dimmInfo->voltageInterface = VOLTAGE_UNKNOWN;
499	DP (printf
500	("Module is VOLTAGE_UNKNOWN\n"));
501	break;
502	}
503	break;
504	/------------------------------------------------------------------------------------------------------------------------------/
505
506	case 9: /* Minimum Cycle Time At Max CasLatancy */
507	shift = (dimmInfo->memoryType == DDR) ? 4 : 2;
508	mult = (dimmInfo->memoryType == DDR) ? 10 : 25;
509	maskLeftOfPoint =
510	(dimmInfo->memoryType == DDR) ? 0xf0 : 0xfc;
511	maskRightOfPoint =
512	(dimmInfo->memoryType == DDR) ? 0xf : 0x03;
513	leftOfPoint = (data[i] & maskLeftOfPoint) >> shift;
514	rightOfPoint = (data[i] & maskRightOfPoint) * mult;
515	dimmInfo->minimumCycleTimeAtMaxCasLatancy_LoP =
516	leftOfPoint;
517	dimmInfo->minimumCycleTimeAtMaxCasLatancy_RoP =
518	rightOfPoint;
519	DP (printf
520	("Minimum Cycle Time At Max CasLatancy: %d.%d [ns]\n",
521	leftOfPoint, rightOfPoint));
522	break;
523	/------------------------------------------------------------------------------------------------------------------------------/
524
525	case 10: /* Clock To Data Out */
526	div = (dimmInfo->memoryType == DDR) ? 100 : 10;
527	time_tmp =
528	(((data[i] & 0xf0) >> 4) * 10) +
529	((data[i] & 0x0f));
530	leftOfPoint = time_tmp / div;
531	rightOfPoint = time_tmp % div;
532	dimmInfo->clockToDataOut_LoP = leftOfPoint;
533	dimmInfo->clockToDataOut_RoP = rightOfPoint;
534	DP (printf
535	("Clock To Data Out: %d.%2d [ns]\n",
536	leftOfPoint, rightOfPoint));
537	/dimmInfo->clockToDataOut /
538	break;
539	/------------------------------------------------------------------------------------------------------------------------------/
540
541	#ifdef CONFIG_ECC
542	case 11: /* Error Check Type */
543	dimmInfo->errorCheckType = data[i];
544	DP (printf
545	("Error Check Type (0=NONE): %d\n",
546	dimmInfo->errorCheckType));
547	break;
548	#endif
549	/------------------------------------------------------------------------------------------------------------------------------/
550
551	case 12: /* Refresh Interval */
552	dimmInfo->RefreshInterval = data[i];
553	DP (printf
554	("RefreshInterval (80= Self refresh Normal, 15.625us) : %x\n",
555	dimmInfo->RefreshInterval));
556	break;
557	/------------------------------------------------------------------------------------------------------------------------------/
558
559	case 13: /* Sdram Width */
560	dimmInfo->sdramWidth = data[i];
561	DP (printf
562	("Sdram Width: %d\n",
563	dimmInfo->sdramWidth));
564	break;
565	/------------------------------------------------------------------------------------------------------------------------------/
566
567	case 14: /* Error Check Data Width */
568	dimmInfo->errorCheckDataWidth = data[i];
569	DP (printf
570	("Error Check Data Width: %d\n",
571	dimmInfo->errorCheckDataWidth));
572	break;
573	/------------------------------------------------------------------------------------------------------------------------------/
574
575	case 15: /* Minimum Clock Delay */
576	dimmInfo->minClkDelay = data[i];
577	DP (printf
578	("Minimum Clock Delay: %d\n",
579	dimmInfo->minClkDelay));
580	break;
581	/------------------------------------------------------------------------------------------------------------------------------/
582
583	case 16: /* Burst Length Supported */
584	/****-**-**-*****
585	* bit3 \| bit2 \| bit1 \| bit0 *
586	*****-**-**-*****
587	burst length = * 8 \| 4 \| 2 \| 1 *
588	*****************************
589
590	If for example bit0 and bit2 are set, the burst
591	length supported are 1 and 4. */
592
593	dimmInfo->burstLengthSupported = data[i];
594	#ifdef DEBUG
595	DP (printf
596	("Burst Length Supported: "));
597	if (dimmInfo->burstLengthSupported & 0x01)
598	DP (printf ("1, "));
599	if (dimmInfo->burstLengthSupported & 0x02)
600	DP (printf ("2, "));
601	if (dimmInfo->burstLengthSupported & 0x04)
602	DP (printf ("4, "));
603	if (dimmInfo->burstLengthSupported & 0x08)
604	DP (printf ("8, "));
605	DP (printf (" Bit \n"));
606	#endif
607	break;
608	/------------------------------------------------------------------------------------------------------------------------------/
609
610	case 17: /* Number Of Banks On Each Device */
611	dimmInfo->numOfBanksOnEachDevice = data[i];
612	DP (printf
613	("Number Of Banks On Each Chip: %d\n",
614	dimmInfo->numOfBanksOnEachDevice));
615	break;
616	/------------------------------------------------------------------------------------------------------------------------------/
617
618	case 18: /* Suported Cas Latencies */
619
620	/* DDR:
621	*****-**-**-**-**-**-**-*****
622	* bit7 \| bit6 \| bit5 \| bit4 \| bit3 \| bit2 \| bit1 \| bit0 *
623	*****-**-**-**-**-**-**-*****
624	CAS = * TBD \| TBD \| 3.5 \| 3 \| 2.5 \| 2 \| 1.5 \| 1 *
625	*********************************************************
626	SDRAM:
627	*****-**-**-**-**-**-**-*****
628	* bit7 \| bit6 \| bit5 \| bit4 \| bit3 \| bit2 \| bit1 \| bit0 *
629	*****-**-**-**-**-**-**-*****
630	CAS = * TBD \| 7 \| 6 \| 5 \| 4 \| 3 \| 2 \| 1 *
631	********************************************************/
632	dimmInfo->suportedCasLatencies = data[i];
633	#ifdef DEBUG
634	DP (printf
635	("Suported Cas Latencies: (CL) "));
636	if (dimmInfo->memoryType == 0) { /* SDRAM */
637	for (k = 0; k <= 7; k++) {
638	if (dimmInfo->
639	suportedCasLatencies & (1 << k))
640	DP (printf
641	("%d, ",
642	k + 1));
643	}
644
645	} else { /* DDR-RAM */
646
647	if (dimmInfo->suportedCasLatencies & 1)
648	DP (printf ("1, "));
649	if (dimmInfo->suportedCasLatencies & 2)
650	DP (printf ("1.5, "));
651	if (dimmInfo->suportedCasLatencies & 4)
652	DP (printf ("2, "));
653	if (dimmInfo->suportedCasLatencies & 8)
654	DP (printf ("2.5, "));
655	if (dimmInfo->suportedCasLatencies & 16)
656	DP (printf ("3, "));
657	if (dimmInfo->suportedCasLatencies & 32)
658	DP (printf ("3.5, "));
659
660	}
661	DP (printf ("\n"));
662	#endif
663	/* Calculating MAX CAS latency */
664	for (j = 7; j > 0; j--) {
665	if (((dimmInfo->
666	suportedCasLatencies >> j) & 0x1) ==
667	1) {
668	switch (dimmInfo->memoryType) {
669	case DDR:
670	/* CAS latency 1, 1.5, 2, 2.5, 3, 3.5 */
671	switch (j) {
672	case 7:
673	DP (printf
674	("Max. Cas Latencies (DDR): ERROR !!!\n"));
675	dimmInfo->
676	maxClSupported_DDR
677	=
678	DDR_CL_FAULT;
679	hang ();
680	break;
681	case 6:
682	DP (printf
683	("Max. Cas Latencies (DDR): ERROR !!!\n"));
684	dimmInfo->
685	maxClSupported_DDR
686	=
687	DDR_CL_FAULT;
688	hang ();
689	break;
690	case 5:
691	DP (printf
692	("Max. Cas Latencies (DDR): 3.5 clk's\n"));
693	dimmInfo->
694	maxClSupported_DDR
695	= DDR_CL_3_5;
696	break;
697	case 4:
698	DP (printf
699	("Max. Cas Latencies (DDR): 3 clk's \n"));
700	dimmInfo->
701	maxClSupported_DDR
702	= DDR_CL_3;
703	break;
704	case 3:
705	DP (printf
706	("Max. Cas Latencies (DDR): 2.5 clk's \n"));
707	dimmInfo->
708	maxClSupported_DDR
709	= DDR_CL_2_5;
710	break;
711	case 2:
712	DP (printf
713	("Max. Cas Latencies (DDR): 2 clk's \n"));
714	dimmInfo->
715	maxClSupported_DDR
716	= DDR_CL_2;
717	break;
718	case 1:
719	DP (printf
720	("Max. Cas Latencies (DDR): 1.5 clk's \n"));
721	dimmInfo->
722	maxClSupported_DDR
723	= DDR_CL_1_5;
724	break;
725	}
726	dimmInfo->
727	maxCASlatencySupported_LoP
728	=
729	1 +
730	(int) (5 * j / 10);
731	if (((5 * j) % 10) != 0)
732	dimmInfo->
733	maxCASlatencySupported_RoP
734	= 5;
735	else
736	dimmInfo->
737	maxCASlatencySupported_RoP
738	= 0;
739	DP (printf
740	("Max. Cas Latencies (DDR LoP.RoP Notation): %d.%d \n",
741	dimmInfo->
742	maxCASlatencySupported_LoP,
743	dimmInfo->
744	maxCASlatencySupported_RoP));
745	break;
746	case SDRAM:
747	/* CAS latency 1, 2, 3, 4, 5, 6, 7 */
748	dimmInfo->maxClSupported_SD = j; /* Cas Latency DDR-RAM Coded */
749	DP (printf
750	("Max. Cas Latencies (SD): %d\n",
751	dimmInfo->
752	maxClSupported_SD));
753	dimmInfo->
754	maxCASlatencySupported_LoP
755	= j;
756	dimmInfo->
757	maxCASlatencySupported_RoP
758	= 0;
759	DP (printf
760	("Max. Cas Latencies (DDR LoP.RoP Notation): %d.%d \n",
761	dimmInfo->
762	maxCASlatencySupported_LoP,
763	dimmInfo->
764	maxCASlatencySupported_RoP));
765	break;
766	}
767	break;
768	}
769	}
770	break;
771	/------------------------------------------------------------------------------------------------------------------------------/
772
773	case 21: /* Buffered Address And Control Inputs */
774	DP (printf ("\nModul Attributes (SPD Byte 21): \n"));
775	dimmInfo->bufferedAddrAndControlInputs =
776	data[i] & BIT0;
777	dimmInfo->registeredAddrAndControlInputs =
778	(data[i] & BIT1) >> 1;
779	dimmInfo->onCardPLL = (data[i] & BIT2) >> 2;
780	dimmInfo->bufferedDQMBinputs = (data[i] & BIT3) >> 3;
781	dimmInfo->registeredDQMBinputs =
782	(data[i] & BIT4) >> 4;
783	dimmInfo->differentialClockInput =
784	(data[i] & BIT5) >> 5;
785	dimmInfo->redundantRowAddressing =
786	(data[i] & BIT6) >> 6;
787	#ifdef DEBUG
788	if (dimmInfo->bufferedAddrAndControlInputs == 1)
789	DP (printf
790	(" - Buffered Address/Control Input: Yes \n"));
791	else
792	DP (printf
793	(" - Buffered Address/Control Input: No \n"));
794
795	if (dimmInfo->registeredAddrAndControlInputs == 1)
796	DP (printf
797	(" - Registered Address/Control Input: Yes \n"));
798	else
799	DP (printf
800	(" - Registered Address/Control Input: No \n"));
801
802	if (dimmInfo->onCardPLL == 1)
803	DP (printf
804	(" - On-Card PLL (clock): Yes \n"));
805	else
806	DP (printf
807	(" - On-Card PLL (clock): No \n"));
808
809	if (dimmInfo->bufferedDQMBinputs == 1)
810	DP (printf
811	(" - Bufferd DQMB Inputs: Yes \n"));
812	else
813	DP (printf
814	(" - Bufferd DQMB Inputs: No \n"));
815
816	if (dimmInfo->registeredDQMBinputs == 1)
817	DP (printf
818	(" - Registered DQMB Inputs: Yes \n"));
819	else
820	DP (printf
821	(" - Registered DQMB Inputs: No \n"));
822
823	if (dimmInfo->differentialClockInput == 1)
824	DP (printf
825	(" - Differential Clock Input: Yes \n"));
826	else
827	DP (printf
828	(" - Differential Clock Input: No \n"));
829
830	if (dimmInfo->redundantRowAddressing == 1)
831	DP (printf
832	(" - redundant Row Addressing: Yes \n"));
833	else
834	DP (printf
835	(" - redundant Row Addressing: No \n"));
836
837	#endif
838	break;
839	/------------------------------------------------------------------------------------------------------------------------------/
840
841	case 22: /* Suported AutoPreCharge */
842	DP (printf ("\nModul Attributes (SPD Byte 22): \n"));
843	dimmInfo->suportedEarlyRasPreCharge = data[i] & BIT0;
844	dimmInfo->suportedAutoPreCharge =
845	(data[i] & BIT1) >> 1;
846	dimmInfo->suportedPreChargeAll =
847	(data[i] & BIT2) >> 2;
848	dimmInfo->suportedWrite1ReadBurst =
849	(data[i] & BIT3) >> 3;
850	dimmInfo->suported5PercentLowVCC =
851	(data[i] & BIT4) >> 4;
852	dimmInfo->suported5PercentUpperVCC =
853	(data[i] & BIT5) >> 5;
854	#ifdef DEBUG
855	if (dimmInfo->suportedEarlyRasPreCharge == 1)
856	DP (printf
857	(" - Early Ras Precharge: Yes \n"));
858	else
859	DP (printf
860	(" - Early Ras Precharge: No \n"));
861
862	if (dimmInfo->suportedAutoPreCharge == 1)
863	DP (printf
864	(" - AutoPreCharge: Yes \n"));
865	else
866	DP (printf
867	(" - AutoPreCharge: No \n"));
868
869	if (dimmInfo->suportedPreChargeAll == 1)
870	DP (printf
871	(" - Precharge All: Yes \n"));
872	else
873	DP (printf
874	(" - Precharge All: No \n"));
875
876	if (dimmInfo->suportedWrite1ReadBurst == 1)
877	DP (printf
878	(" - Write 1/ReadBurst: Yes \n"));
879	else
880	DP (printf
881	(" - Write 1/ReadBurst: No \n"));
882
883	if (dimmInfo->suported5PercentLowVCC == 1)
884	DP (printf
885	(" - lower VCC tolerance: 5 Percent \n"));
886	else
887	DP (printf
888	(" - lower VCC tolerance: 10 Percent \n"));
889
890	if (dimmInfo->suported5PercentUpperVCC == 1)
891	DP (printf
892	(" - upper VCC tolerance: 5 Percent \n"));
893	else
894	DP (printf
895	(" - upper VCC tolerance: 10 Percent \n"));
896
897	#endif
898	break;
899	/------------------------------------------------------------------------------------------------------------------------------/
900
901	case 23: /* Minimum Cycle Time At Maximum Cas Latancy Minus 1 (2nd highest CL) */
902	shift = (dimmInfo->memoryType == DDR) ? 4 : 2;
903	mult = (dimmInfo->memoryType == DDR) ? 10 : 25;
904	maskLeftOfPoint =
905	(dimmInfo->memoryType == DDR) ? 0xf0 : 0xfc;
906	maskRightOfPoint =
907	(dimmInfo->memoryType == DDR) ? 0xf : 0x03;
908	leftOfPoint = (data[i] & maskLeftOfPoint) >> shift;
909	rightOfPoint = (data[i] & maskRightOfPoint) * mult;
910	dimmInfo->minimumCycleTimeAtMaxCasLatancyMinus1_LoP =
911	leftOfPoint;
912	dimmInfo->minimumCycleTimeAtMaxCasLatancyMinus1_RoP =
913	rightOfPoint;
914	DP (printf
915	("Minimum Cycle Time At 2nd highest CasLatancy (0 = Not supported): %d.%d [ns]\n",
916	leftOfPoint, rightOfPoint));
917	/dimmInfo->minimumCycleTimeAtMaxCasLatancy /
918	break;
919	/------------------------------------------------------------------------------------------------------------------------------/
920
921	case 24: /* Clock To Data Out 2nd highest Cas Latency Value */
922	div = (dimmInfo->memoryType == DDR) ? 100 : 10;
923	time_tmp =
924	(((data[i] & 0xf0) >> 4) * 10) +
925	((data[i] & 0x0f));
926	leftOfPoint = time_tmp / div;
927	rightOfPoint = time_tmp % div;
928	dimmInfo->clockToDataOutMinus1_LoP = leftOfPoint;
929	dimmInfo->clockToDataOutMinus1_RoP = rightOfPoint;
930	DP (printf
931	("Clock To Data Out (2nd CL value): %d.%2d [ns]\n",
932	leftOfPoint, rightOfPoint));
933	break;
934	/------------------------------------------------------------------------------------------------------------------------------/
935
936	case 25: /* Minimum Cycle Time At Maximum Cas Latancy Minus 2 (3rd highest CL) */
937	shift = (dimmInfo->memoryType == DDR) ? 4 : 2;
938	mult = (dimmInfo->memoryType == DDR) ? 10 : 25;
939	maskLeftOfPoint =
940	(dimmInfo->memoryType == DDR) ? 0xf0 : 0xfc;
941	maskRightOfPoint =
942	(dimmInfo->memoryType == DDR) ? 0xf : 0x03;
943	leftOfPoint = (data[i] & maskLeftOfPoint) >> shift;
944	rightOfPoint = (data[i] & maskRightOfPoint) * mult;
945	dimmInfo->minimumCycleTimeAtMaxCasLatancyMinus2_LoP =
946	leftOfPoint;
947	dimmInfo->minimumCycleTimeAtMaxCasLatancyMinus2_RoP =
948	rightOfPoint;
949	DP (printf
950	("Minimum Cycle Time At 3rd highest CasLatancy (0 = Not supported): %d.%d [ns]\n",
951	leftOfPoint, rightOfPoint));
952	/dimmInfo->minimumCycleTimeAtMaxCasLatancy /
953	break;
954	/------------------------------------------------------------------------------------------------------------------------------/
955
956	case 26: /* Clock To Data Out 3rd highest Cas Latency Value */
957	div = (dimmInfo->memoryType == DDR) ? 100 : 10;
958	time_tmp =
959	(((data[i] & 0xf0) >> 4) * 10) +
960	((data[i] & 0x0f));
961	leftOfPoint = time_tmp / div;
962	rightOfPoint = time_tmp % div;
963	dimmInfo->clockToDataOutMinus2_LoP = leftOfPoint;
964	dimmInfo->clockToDataOutMinus2_RoP = rightOfPoint;
965	DP (printf
966	("Clock To Data Out (3rd CL value): %d.%2d [ns]\n",
967	leftOfPoint, rightOfPoint));
968	break;
969	/------------------------------------------------------------------------------------------------------------------------------/
970
971	case 27: /* Minimum Row Precharge Time */
972	shift = (dimmInfo->memoryType == DDR) ? 2 : 0;
973	maskLeftOfPoint =
974	(dimmInfo->memoryType == DDR) ? 0xfc : 0xff;
975	maskRightOfPoint =
976	(dimmInfo->memoryType == DDR) ? 0x03 : 0x00;
977	leftOfPoint = ((data[i] & maskLeftOfPoint) >> shift);
978	rightOfPoint = (data[i] & maskRightOfPoint) * 25;
979
980	dimmInfo->minRowPrechargeTime = ((leftOfPoint * 100) + rightOfPoint); /* measured in n times 10ps Intervals */
981	trp_clocks =
982	(dimmInfo->minRowPrechargeTime +
983	(tmemclk - 1)) / tmemclk;
984	DP (printf
985	("* 1 clock cycle = %ld 10ps intervalls = %ld.%ld ns**\n",
986	tmemclk, tmemclk / 100, tmemclk % 100));
987	DP (printf
988	("Minimum Row Precharge Time [ns]: %d.%2d = in Clk cycles %d\n",
989	leftOfPoint, rightOfPoint, trp_clocks));
990	break;
991	/------------------------------------------------------------------------------------------------------------------------------/
992
993	case 28: /* Minimum Row Active to Row Active Time */
994	shift = (dimmInfo->memoryType == DDR) ? 2 : 0;
995	maskLeftOfPoint =
996	(dimmInfo->memoryType == DDR) ? 0xfc : 0xff;
997	maskRightOfPoint =
998	(dimmInfo->memoryType == DDR) ? 0x03 : 0x00;
999	leftOfPoint = ((data[i] & maskLeftOfPoint) >> shift);
1000	rightOfPoint = (data[i] & maskRightOfPoint) * 25;
1001
1002	dimmInfo->minRowActiveRowActiveDelay = ((leftOfPoint * 100) + rightOfPoint); /* measured in 100ns Intervals */
1003	trrd_clocks =
1004	(dimmInfo->minRowActiveRowActiveDelay +
1005	(tmemclk - 1)) / tmemclk;
1006	DP (printf
1007	("Minimum Row Active -To- Row Active Delay [ns]: %d.%2d = in Clk cycles %d\n",
1008	leftOfPoint, rightOfPoint, trp_clocks));
1009	break;
1010	/------------------------------------------------------------------------------------------------------------------------------/
1011
1012	case 29: /* Minimum Ras-To-Cas Delay */
1013	shift = (dimmInfo->memoryType == DDR) ? 2 : 0;
1014	maskLeftOfPoint =
1015	(dimmInfo->memoryType == DDR) ? 0xfc : 0xff;
1016	maskRightOfPoint =
1017	(dimmInfo->memoryType == DDR) ? 0x03 : 0x00;
1018	leftOfPoint = ((data[i] & maskLeftOfPoint) >> shift);
1019	rightOfPoint = (data[i] & maskRightOfPoint) * 25;
1020
1021	dimmInfo->minRowActiveRowActiveDelay = ((leftOfPoint * 100) + rightOfPoint); /* measured in 100ns Intervals */
1022	trcd_clocks =
1023	(dimmInfo->minRowActiveRowActiveDelay +
1024	(tmemclk - 1)) / tmemclk;
1025	DP (printf
1026	("Minimum Ras-To-Cas Delay [ns]: %d.%2d = in Clk cycles %d\n",
1027	leftOfPoint, rightOfPoint, trp_clocks));
1028	break;
1029	/------------------------------------------------------------------------------------------------------------------------------/
1030
1031	case 30: /* Minimum Ras Pulse Width */
1032	dimmInfo->minRasPulseWidth = data[i];
1033	tras_clocks =
1034	(NSto10PS (data[i]) +
1035	(tmemclk - 1)) / tmemclk;
1036	DP (printf
1037	("Minimum Ras Pulse Width [ns]: %d = in Clk cycles %d\n",
1038	dimmInfo->minRasPulseWidth, tras_clocks));
1039
1040	break;
1041	/------------------------------------------------------------------------------------------------------------------------------/
1042
1043	case 31: /* Module Bank Density */
1044	dimmInfo->moduleBankDensity = data[i];
1045	DP (printf
1046	("Module Bank Density: %d\n",
1047	dimmInfo->moduleBankDensity));
1048	#ifdef DEBUG
1049	DP (printf
1050	("*** Offered Densities (more than 1 = Multisize-Module): "));
1051	{
1052	if (dimmInfo->moduleBankDensity & 1)
1053	DP (printf ("4MB, "));
1054	if (dimmInfo->moduleBankDensity & 2)
1055	DP (printf ("8MB, "));
1056	if (dimmInfo->moduleBankDensity & 4)
1057	DP (printf ("16MB, "));
1058	if (dimmInfo->moduleBankDensity & 8)
1059	DP (printf ("32MB, "));
1060	if (dimmInfo->moduleBankDensity & 16)
1061	DP (printf ("64MB, "));
1062	if (dimmInfo->moduleBankDensity & 32)
1063	DP (printf ("128MB, "));
1064	if ((dimmInfo->moduleBankDensity & 64)
1065	\|\| (dimmInfo->moduleBankDensity & 128)) {
1066	DP (printf ("ERROR, "));
1067	hang ();
1068	}
1069	}
1070	DP (printf ("\n"));
1071	#endif
1072	break;
1073	/------------------------------------------------------------------------------------------------------------------------------/
1074
1075	case 32: /* Address And Command Setup Time (measured in ns/1000) */
1076	sign = 1;
1077	switch (dimmInfo->memoryType) {
1078	case DDR:
1079	time_tmp =
1080	(((data[i] & 0xf0) >> 4) * 10) +
1081	((data[i] & 0x0f));
1082	leftOfPoint = time_tmp / 100;
1083	rightOfPoint = time_tmp % 100;
1084	break;
1085	case SDRAM:
1086	leftOfPoint = (data[i] & 0xf0) >> 4;
1087	if (leftOfPoint > 7) {
1088	leftOfPoint = data[i] & 0x70 >> 4;
1089	sign = -1;
1090	}
1091	rightOfPoint = (data[i] & 0x0f);
1092	break;
1093	}
1094	dimmInfo->addrAndCommandSetupTime =
1095	(leftOfPoint * 100 + rightOfPoint) * sign;
1096	DP (printf
1097	("Address And Command Setup Time [ns]: %d.%d\n",
1098	sign * leftOfPoint, rightOfPoint));
1099	break;
1100	/------------------------------------------------------------------------------------------------------------------------------/
1101
1102	case 33: /* Address And Command Hold Time */
1103	sign = 1;
1104	switch (dimmInfo->memoryType) {
1105	case DDR:
1106	time_tmp =
1107	(((data[i] & 0xf0) >> 4) * 10) +
1108	((data[i] & 0x0f));
1109	leftOfPoint = time_tmp / 100;
1110	rightOfPoint = time_tmp % 100;
1111	break;
1112	case SDRAM:
1113	leftOfPoint = (data[i] & 0xf0) >> 4;
1114	if (leftOfPoint > 7) {
1115	leftOfPoint = data[i] & 0x70 >> 4;
1116	sign = -1;
1117	}
1118	rightOfPoint = (data[i] & 0x0f);
1119	break;
1120	}
1121	dimmInfo->addrAndCommandHoldTime =
1122	(leftOfPoint * 100 + rightOfPoint) * sign;
1123	DP (printf
1124	("Address And Command Hold Time [ns]: %d.%d\n",
1125	sign * leftOfPoint, rightOfPoint));
1126	break;
1127	/------------------------------------------------------------------------------------------------------------------------------/
1128
1129	case 34: /* Data Input Setup Time */
1130	sign = 1;
1131	switch (dimmInfo->memoryType) {
1132	case DDR:
1133	time_tmp =
1134	(((data[i] & 0xf0) >> 4) * 10) +
1135	((data[i] & 0x0f));
1136	leftOfPoint = time_tmp / 100;
1137	rightOfPoint = time_tmp % 100;
1138	break;
1139	case SDRAM:
1140	leftOfPoint = (data[i] & 0xf0) >> 4;
1141	if (leftOfPoint > 7) {
1142	leftOfPoint = data[i] & 0x70 >> 4;
1143	sign = -1;
1144	}
1145	rightOfPoint = (data[i] & 0x0f);
1146	break;
1147	}
1148	dimmInfo->dataInputSetupTime =
1149	(leftOfPoint * 100 + rightOfPoint) * sign;
1150	DP (printf
1151	("Data Input Setup Time [ns]: %d.%d\n",
1152	sign * leftOfPoint, rightOfPoint));
1153	break;
1154	/------------------------------------------------------------------------------------------------------------------------------/
1155
1156	case 35: /* Data Input Hold Time */
1157	sign = 1;
1158	switch (dimmInfo->memoryType) {
1159	case DDR:
1160	time_tmp =
1161	(((data[i] & 0xf0) >> 4) * 10) +
1162	((data[i] & 0x0f));
1163	leftOfPoint = time_tmp / 100;
1164	rightOfPoint = time_tmp % 100;
1165	break;
1166	case SDRAM:
1167	leftOfPoint = (data[i] & 0xf0) >> 4;
1168	if (leftOfPoint > 7) {
1169	leftOfPoint = data[i] & 0x70 >> 4;
1170	sign = -1;
1171	}
1172	rightOfPoint = (data[i] & 0x0f);
1173	break;
1174	}
1175	dimmInfo->dataInputHoldTime =
1176	(leftOfPoint * 100 + rightOfPoint) * sign;
1177	DP (printf
1178	("Data Input Hold Time [ns]: %d.%d\n\n",
1179	sign * leftOfPoint, rightOfPoint));
1180	break;
1181	/------------------------------------------------------------------------------------------------------------------------------/
1182	}
1183	}
1184	/* calculating the sdram density */
1185	for (i = 0;
1186	i < dimmInfo->numOfRowAddresses + dimmInfo->numOfColAddresses;
1187	i++) {
1188	density = density * 2;
1189	}
1190	dimmInfo->deviceDensity = density * dimmInfo->numOfBanksOnEachDevice *
1191	dimmInfo->sdramWidth;
1192	dimmInfo->numberOfDevices =
1193	(dimmInfo->dataWidth / dimmInfo->sdramWidth) *
1194	dimmInfo->numOfModuleBanks;
1195	devicesForErrCheck =
1196	(dimmInfo->dataWidth - 64) / dimmInfo->sdramWidth;
1197	if ((dimmInfo->errorCheckType == 0x1)
1198	\|\| (dimmInfo->errorCheckType == 0x2)
1199	\|\| (dimmInfo->errorCheckType == 0x3)) {
1200	dimmInfo->size =
1201	(dimmInfo->deviceDensity / 8) *
1202	(dimmInfo->numberOfDevices - devicesForErrCheck);
1203	} else {
1204	dimmInfo->size =
1205	(dimmInfo->deviceDensity / 8) *
1206	dimmInfo->numberOfDevices;
1207	}
1208
1209	/* compute the module DRB size */
1210	tmp = (1 <<
1211	(dimmInfo->numOfRowAddresses + dimmInfo->numOfColAddresses));
1212	tmp *= dimmInfo->numOfModuleBanks;
1213	tmp *= dimmInfo->sdramWidth;
1214	tmp = tmp >> 24; /* div by 0x4000000 (64M) */
1215	dimmInfo->drb_size = (uchar) tmp;
1216	DP (printf ("Module DRB size (n*64Mbit): %d\n", dimmInfo->drb_size));
1217
1218	/* try a CAS latency of 3 first... */
1219
1220	/* bit 1 is CL2, bit 2 is CL3 */
1221	supp_cal = (dimmInfo->suportedCasLatencies & 0x1c) >> 1;
1222
1223	cal_val = 0;
1224	if (supp_cal & 8) {
1225	if (NS10to10PS (data[9]) <= tmemclk)
1226	cal_val = 6;
1227	}
1228	if (supp_cal & 4) {
1229	if (NS10to10PS (data[9]) <= tmemclk)
1230	cal_val = 5;
1231	}
1232
1233	/* then 2... */
1234	if (supp_cal & 2) {
1235	if (NS10to10PS (data[23]) <= tmemclk)
1236	cal_val = 4;
1237	}
1238
1239	DP (printf ("cal_val = %d\n", cal_val * 5));
1240
1241	/* bummer, did't work... */
1242	if (cal_val == 0) {
1243	DP (printf ("Couldn't find a good CAS latency\n"));
1244	hang ();
1245	return 0;
1246	}
1247
1248	return true;
1249	}
1250
1251	/* sets up the GT properly with information passed in */
1252	int setup_sdram (AUX_MEM_DIMM_INFO * info)
1253	{
1254	ulong tmp;
1255	ulong tmp_sdram_mode = 0; /* 0x141c */
1256	ulong tmp_dunit_control_low = 0; /* 0x1404 */
1257	int i;
1258
1259	/* sanity checking */
1260	if (!info->numOfModuleBanks) {
1261	printf ("setup_sdram called with 0 banks\n");
1262	return 1;
1263	}
1264
1265	/* delay line */
1266
1267	/* Program the GT with the discovered data */
1268	if (info->registeredAddrAndControlInputs == true)
1269	DP (printf
1270	("Module is registered, but we do not support registered Modules !!!\n"));
1271
1272
1273	/* delay line */
1274	set_dfcdlInit (); /* may be its not needed */
1275	DP (printf ("Delay line set done\n"));
1276
1277	/* set SDRAM mode NOP / / To_do check it */
1278	GT_REG_WRITE (SDRAM_OPERATION, 0x5);
1279	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1280	DP (printf
1281	("\n* SDRAM_OPERATION 1418: Module still busy ... please wait... *\n"));
1282	}
1283
1284	/* SDRAM configuration */
1285	GT_REG_WRITE (SDRAM_CONFIG, 0x58200400);
1286	DP (printf ("sdram_conf 0x1400: %08x\n", GTREGREAD (SDRAM_CONFIG)));
1287
1288	/* SDRAM open pages controll keep open as much as I can */
1289	GT_REG_WRITE (SDRAM_OPEN_PAGES_CONTROL, 0x0);
1290	DP (printf
1291	("sdram_open_pages_controll 0x1414: %08x\n",
1292	GTREGREAD (SDRAM_OPEN_PAGES_CONTROL)));
1293
1294
1295	/* SDRAM D_UNIT_CONTROL_LOW 0x1404 */
1296	tmp = (GTREGREAD (D_UNIT_CONTROL_LOW) & 0x01); /* Clock Domain Sync from power on reset */
1297	if (tmp == 0)
1298	DP (printf ("Core Signals are sync (by HW-Setting)!!!\n"));
1299	else
1300	DP (printf
1301	("Core Signals syncs. are bypassed (by HW-Setting)!!!\n"));
1302
1303	/* SDRAM set CAS Lentency according to SPD information */
1304	switch (info->memoryType) {
1305	case SDRAM:
1306	DP (printf ("### SD-RAM not supported yet !!!\n"));
1307	hang ();
1308	/* ToDo fill SD-RAM if needed !!!!! */
1309	break;
1310
1311	case DDR:
1312	DP (printf ("### SET-CL for DDR-RAM\n"));
1313
1314	switch (info->maxClSupported_DDR) {
1315	case DDR_CL_3:
1316	tmp_dunit_control_low = 0x3c000000; /* Read-Data sampled on falling edge of Clk */
1317	tmp_sdram_mode = 0x32; /* CL=3 Burstlength = 4 */
1318	DP (printf
1319	("Max. CL is 3 CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1320	tmp_sdram_mode, tmp_dunit_control_low));
1321	break;
1322
1323	case DDR_CL_2_5:
1324	if (tmp == 1) { /* clocks sync */
1325	tmp_dunit_control_low = 0x24000000; /* Read-Data sampled on falling edge of Clk */
1326	tmp_sdram_mode = 0x62; /* CL=2,5 Burstlength = 4 */
1327	DP (printf
1328	("Max. CL is 2,5s CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1329	tmp_sdram_mode, tmp_dunit_control_low));
1330	} else { /* clk sync. bypassed */
1331
1332	tmp_dunit_control_low = 0x03000000; /* Read-Data sampled on rising edge of Clk */
1333	tmp_sdram_mode = 0x62; /* CL=2,5 Burstlength = 4 */
1334	DP (printf
1335	("Max. CL is 2,5 CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1336	tmp_sdram_mode, tmp_dunit_control_low));
1337	}
1338	break;
1339
1340	case DDR_CL_2:
1341	if (tmp == 1) { /* Sync */
1342	tmp_dunit_control_low = 0x03000000; /* Read-Data sampled on rising edge of Clk */
1343	tmp_sdram_mode = 0x22; /* CL=2 Burstlength = 4 */
1344	DP (printf
1345	("Max. CL is 2s CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1346	tmp_sdram_mode, tmp_dunit_control_low));
1347	} else { /* Not sync. */
1348
1349	tmp_dunit_control_low = 0x3b000000; /* Read-Data sampled on rising edge of Clk */
1350	tmp_sdram_mode = 0x22; /* CL=2 Burstlength = 4 */
1351	DP (printf
1352	("Max. CL is 2 CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1353	tmp_sdram_mode, tmp_dunit_control_low));
1354	}
1355	break;
1356
1357	case DDR_CL_1_5:
1358	if (tmp == 1) { /* Sync */
1359	tmp_dunit_control_low = 0x23000000; /* Read-Data sampled on falling edge of Clk */
1360	tmp_sdram_mode = 0x52; /* CL=1,5 Burstlength = 4 */
1361	DP (printf
1362	("Max. CL is 1,5s CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1363	tmp_sdram_mode, tmp_dunit_control_low));
1364	} else { /* not sync */
1365
1366	tmp_dunit_control_low = 0x1a000000; /* Read-Data sampled on rising edge of Clk */
1367	tmp_sdram_mode = 0x52; /* CL=1,5 Burstlength = 4 */
1368	DP (printf
1369	("Max. CL is 1,5 CLKs 0x141c= %08lx, 0x1404 = %08lx\n",
1370	tmp_sdram_mode, tmp_dunit_control_low));
1371	}
1372	break;
1373
1374	default:
1375	printf ("Max. CL is out of range %d\n",
1376	info->maxClSupported_DDR);
1377	hang ();
1378	break;
1379	}
1380	break;
1381	}
1382
1383	/* Write results of CL detection procedure */
1384	GT_REG_WRITE (SDRAM_MODE, tmp_sdram_mode);
1385	/* set SDRAM mode SetCommand 0x1418 */
1386	GT_REG_WRITE (SDRAM_OPERATION, 0x3);
1387	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1388	DP (printf
1389	("\n* SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... *\n"));
1390	}
1391
1392
1393	/* SDRAM D_UNIT_CONTROL_LOW 0x1404 */
1394	tmp = (GTREGREAD (D_UNIT_CONTROL_LOW) & 0x01); /* Clock Domain Sync from power on reset */
1395	if (tmp != 1) { /clocks are not sync /
1396	/* asyncmode */
1397	GT_REG_WRITE (D_UNIT_CONTROL_LOW,
1398	(GTREGREAD (D_UNIT_CONTROL_LOW) & 0x7F) \|
1399	0x18110780 \| tmp_dunit_control_low);
1400	} else {
1401	/* syncmode */
1402	GT_REG_WRITE (D_UNIT_CONTROL_LOW,
1403	(GTREGREAD (D_UNIT_CONTROL_LOW) & 0x7F) \|
1404	0x00110000 \| tmp_dunit_control_low);
1405	}
1406
1407	/* set SDRAM mode SetCommand 0x1418 */
1408	GT_REG_WRITE (SDRAM_OPERATION, 0x3);
1409	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1410	DP (printf
1411	("\n* SDRAM_OPERATION 1418 after D_UNIT_CONTROL_LOW: Module still busy ... please wait... *\n"));
1412	}
1413
1414	/------------------------------------------------------------------------------ /
1415
1416
1417	/* bank parameters */
1418	/* SDRAM address decode register */
1419	/* program this with the default value */
1420	tmp = 0x02;
1421
1422
1423	DP (printf ("drb_size (n*64Mbit): %d\n", info->drb_size));
1424	switch (info->drb_size) {
1425	case 1: /* 64 Mbit */
1426	case 2: /* 128 Mbit */
1427	DP (printf ("RAM-Device_size 64Mbit or 128Mbit)\n"));
1428	tmp \|= (0x00 << 4);
1429	break;
1430	case 4: /* 256 Mbit */
1431	case 8: /* 512 Mbit */
1432	DP (printf ("RAM-Device_size 256Mbit or 512Mbit)\n"));
1433	tmp \|= (0x01 << 4);
1434	break;
1435	case 16: /* 1 Gbit */
1436	case 32: /* 2 Gbit */
1437	DP (printf ("RAM-Device_size 1Gbit or 2Gbit)\n"));
1438	tmp \|= (0x02 << 4);
1439	break;
1440	default:
1441	printf ("Error in dram size calculation\n");
1442	DP (printf ("Assume: RAM-Device_size 1Gbit or 2Gbit)\n"));
1443	tmp \|= (0x02 << 4);
1444	return 1;
1445	}
1446
1447	/* SDRAM bank parameters */
1448	/* the param registers for slot 1 (banks 2+3) are offset by 0x8 */
1449	DP (printf
1450	("setting up slot %d config with: %08lx \n", info->slot, tmp));
1451	GT_REG_WRITE (SDRAM_ADDR_CONTROL, tmp);
1452
1453	/* ------------------------------------------------------------------------------ */
1454
1455	DP (printf
1456	("setting up sdram_timing_control_low with: %08x \n",
1457	0x11511220));
1458	GT_REG_WRITE (SDRAM_TIMING_CONTROL_LOW, 0x11511220);
1459
1460
1461	/* ------------------------------------------------------------------------------ */
1462
1463	/* SDRAM configuration */
1464	tmp = GTREGREAD (SDRAM_CONFIG);
1465
1466	if (info->registeredAddrAndControlInputs
1467	\|\| info->registeredDQMBinputs) {
1468	tmp \|= (1 << 17);
1469	DP (printf
1470	("SPD says: registered Addr. and Cont.: %d; registered DQMBinputs: %d\n",
1471	info->registeredAddrAndControlInputs,
1472	info->registeredDQMBinputs));
1473	}
1474
1475	/* Use buffer 1 to return read data to the CPU
1476	* Page 426 MV64360 */
1477	tmp \|= (1 << 26);
1478	DP (printf
1479	("Before Buffer assignment - sdram_conf: %08x\n",
1480	GTREGREAD (SDRAM_CONFIG)));
1481	DP (printf
1482	("After Buffer assignment - sdram_conf: %08x\n",
1483	GTREGREAD (SDRAM_CONFIG)));
1484
1485	/* SDRAM timing To_do: */
1486
1487
1488	tmp = GTREGREAD (SDRAM_TIMING_CONTROL_HIGH);
1489	DP (printf ("# sdram_timing_control_high is : %08lx \n", tmp));
1490
1491	/* SDRAM address decode register */
1492	/* program this with the default value */
1493	tmp = GTREGREAD (SDRAM_ADDR_CONTROL);
1494	DP (printf
1495	("SDRAM address control (before: decode): %08x ",
1496	GTREGREAD (SDRAM_ADDR_CONTROL)));
1497	GT_REG_WRITE (SDRAM_ADDR_CONTROL, (tmp \| 0x2));
1498	DP (printf
1499	("SDRAM address control (after: decode): %08x\n",
1500	GTREGREAD (SDRAM_ADDR_CONTROL)));
1501
1502	/* set the SDRAM configuration for each bank */
1503
1504	/* for (i = info->slot * 2; i < ((info->slot * 2) + info->banks); i++) */
1505	{
1506	int l, l1;
1507
1508	i = info->slot;
1509	DP (printf
1510	("\n* Running a MRS cycle for bank %d *\n", i));
1511
1512	/* map the bank */
1513	memory_map_bank (i, 0, GB / 4);
1514	#if 1 /* test only */
1515
1516	tmp = GTREGREAD (SDRAM_MODE);
1517	GT_REG_WRITE (EXTENDED_DRAM_MODE, 0x0);
1518	GT_REG_WRITE (SDRAM_OPERATION, 0x4);
1519	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1520	DP (printf
1521	("\n* SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... *\n"));
1522	}
1523
1524	GT_REG_WRITE (SDRAM_MODE, tmp \| 0x80);
1525	GT_REG_WRITE (SDRAM_OPERATION, 0x3);
1526	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1527	DP (printf
1528	("\n* SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... *\n"));
1529	}
1530	l1 = 0;
1531	for (l=0;l<200;l++)
1532	l1 += GTREGREAD (SDRAM_OPERATION);
1533
1534	GT_REG_WRITE (SDRAM_MODE, tmp);
1535	GT_REG_WRITE (SDRAM_OPERATION, 0x3);
1536	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1537	DP (printf
1538	("\n* SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... *\n"));
1539	}
1540
1541	/* switch back to normal operation mode */
1542	GT_REG_WRITE (SDRAM_OPERATION, 0x5);
1543	while (GTREGREAD (SDRAM_OPERATION) != 0) {
1544	DP (printf
1545	("\n* SDRAM_OPERATION 1418 after SDRAM_MODE: Module still busy ... please wait... *\n"));
1546	}
1547
1548	#endif /* test only */
1549	/* unmap the bank */
1550	memory_map_bank (i, 0, 0);
1551	}
1552
1553	return 0;
1554	}
1555
1556	/*
1557	* Check memory range for valid RAM. A simple memory test determines
1558	* the actually available RAM size between addresses `base' and
1559	* `base + maxsize'. Some (not all) hardware errors are detected:
1560	* - short between address lines
1561	* - short between data lines
1562	*/
1563	long int
1564	dram_size(long int *base, long int maxsize)
1565	{
1566	volatile long int addr, b=base;
1567	long int cnt, val, save1, save2;
1568
1569	#define STARTVAL (1<<20) /* start test at 1M */
1570	for (cnt = STARTVAL/sizeof(long); cnt < maxsize/sizeof(long); cnt <<= 1) {
1571	addr = base + cnt; /* pointer arith! */
1572
1573	save1 = addr; / save contents of addr */
1574	save2 = b; / save contents of base */
1575
1576	addr=cnt; / write cnt to addr */
1577	b=0; / put null at base */
1578
1579	/* check at base address */
1580	if ((*b) != 0) {
1581	addr=save1; / restore addr /
1582	b=save2; / restore b /
1583	return (0);
1584	}
1585	val = addr; / read addr /
1586	val = addr; / read addr /
1587
1588	*addr=save1;
1589	*b=save2;
1590
1591	if (val != cnt) {
1592	DP(printf("Found %08x at Address %08x (failure)\n", (unsigned int)val, (unsigned int) addr));
1593	/* fix boundary condition.. STARTVAL means zero */
1594	if(cnt==STARTVAL/sizeof(long)) cnt=0;
1595	return (cnt * sizeof(long));
1596	}
1597	}
1598	return maxsize;
1599	}
1600
1601	/* ------------------------------------------------------------------------- */
1602
1603	/* ppcboot interface function to SDRAM init - this is where all the
1604	* controlling logic happens */
1605	phys_size_t
1606	initdram(int board_type)
1607	{
1608	int s0 = 0, s1 = 0;
1609	int checkbank[4] = { [0 ... 3] = 0 };
1610	ulong bank_no, realsize, total, check;
1611	AUX_MEM_DIMM_INFO dimmInfo1;
1612	AUX_MEM_DIMM_INFO dimmInfo2;
1613	int nhr;
1614
1615	/* first, use the SPD to get info about the SDRAM/ DDRRAM */
1616
1617	/* check the NHR bit and skip mem init if it's already done */
1618	nhr = get_hid0() & (1 << 16);
1619
1620	if (nhr) {
1621	printf("Skipping SD- DDRRAM setup due to NHR bit being set\n");
1622	} else {
1623	/* DIMM0 */
1624	s0 = check_dimm(0, &dimmInfo1);
1625
1626	/* DIMM1 */
1627	s1 = check_dimm(1, &dimmInfo2);
1628
1629	memory_map_bank(0, 0, 0);
1630	memory_map_bank(1, 0, 0);
1631	memory_map_bank(2, 0, 0);
1632	memory_map_bank(3, 0, 0);
1633
1634	if (dimmInfo1.numOfModuleBanks && setup_sdram(&dimmInfo1)) {
1635	printf("Setup for DIMM1 failed.\n");
1636	}
1637
1638	if (dimmInfo2.numOfModuleBanks && setup_sdram(&dimmInfo2)) {
1639	printf("Setup for DIMM2 failed.\n");
1640	}
1641
1642	/* set the NHR bit */
1643	set_hid0(get_hid0() \| (1 << 16));
1644	}
1645	/* next, size the SDRAM banks */
1646
1647	realsize = total = 0;
1648	check = GB/4;
1649	if (dimmInfo1.numOfModuleBanks > 0) {checkbank[0] = 1; printf("-- DIMM1 has 1 bank\n");}
1650	if (dimmInfo1.numOfModuleBanks > 1) {checkbank[1] = 1; printf("-- DIMM1 has 2 banks\n");}
1651	if (dimmInfo1.numOfModuleBanks > 2)
1652	printf("Error, SPD claims DIMM1 has >2 banks\n");
1653
1654	if (dimmInfo2.numOfModuleBanks > 0) {checkbank[2] = 1; printf("-- DIMM2 has 1 bank\n");}
1655	if (dimmInfo2.numOfModuleBanks > 1) {checkbank[3] = 1; printf("-- DIMM2 has 2 banks\n");}
1656	if (dimmInfo2.numOfModuleBanks > 2)
1657	printf("Error, SPD claims DIMM2 has >2 banks\n");
1658
1659	for (bank_no = 0; bank_no < CFG_DRAM_BANKS; bank_no++) {
1660	/* skip over banks that are not populated */
1661	if (! checkbank[bank_no])
1662	continue;
1663
1664	if ((total + check) > CFG_GT_REGS)
1665	check = CFG_GT_REGS - total;
1666
1667	memory_map_bank(bank_no, total, check);
1668	realsize = dram_size((long int *)total, check);
1669	memory_map_bank(bank_no, total, realsize);
1670
1671	total += realsize;
1672	}
1673
1674	/* Setup Ethernet DMA Adress window to DRAM Area */
1675	return(total);
1676	}
1677
1678	/* ***************************************************************************************
1679	! * SDRAM INIT *
1680	! * This procedure detect all Sdram types: 64, 128, 256, 512 Mbit, 1Gbit and 2Gb *
1681	! * This procedure fits only the Atlantis *
1682	! * *
1683	! *************************************************************************************** */
1684
1685
1686	/* ***************************************************************************************
1687	! * DFCDL initialize MV643xx Design Considerations *
1688	! * *
1689	! *************************************************************************************** */
1690	int set_dfcdlInit (void)
1691	{
1692	int i;
1693	unsigned int dfcdl_word = 0x0000014f;
1694
1695	for (i = 0; i < 64; i++) {
1696	GT_REG_WRITE (SRAM_DATA0, dfcdl_word);
1697	}
1698	GT_REG_WRITE (DFCDL_CONFIG0, 0x00300000); /* enable dynamic delay line updating */
1699
1700
1701	return (0);
1702	}

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source: SVN/rincon/u-boot/board/esd/cpci750/sdram_init.c @ 55

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