-
Notifications
You must be signed in to change notification settings - Fork 23
/
Copy pathREADME.fsl-ddr
374 lines (325 loc) · 18.2 KB
/
README.fsl-ddr
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
Table of interleaving modes supported in cpu/8xxx/ddr/
======================================================
+-------------+---------------------------------------------------------+
| | Rank Interleaving |
| +--------+-----------+-----------+------------+-----------+
|Memory | | | | 2x2 | 4x1 |
|Controller | None | 2x1 lower | 2x1 upper | {CS0+CS1}, | {CS0+CS1+ |
|Interleaving | | {CS0+CS1} | {CS2+CS3} | {CS2+CS3} | CS2+CS3} |
+-------------+--------+-----------+-----------+------------+-----------+
|None | Yes | Yes | Yes | Yes | Yes |
+-------------+--------+-----------+-----------+------------+-----------+
|Cacheline | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Page | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Bank | Yes | Yes | No | No, Only(*)| Yes |
| |CS0 Only| | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
|Superbank | No | Yes | No | No, Only(*)| Yes |
| | | | | {CS0+CS1} | |
+-------------+--------+-----------+-----------+------------+-----------+
(*) Although the hardware can be configured with memory controller
interleaving using "2x2" rank interleaving, it only interleaves {CS0+CS1}
from each controller. {CS2+CS3} on each controller are only rank
interleaved on that controller.
For memory controller interleaving, identical DIMMs are suggested. Software
doesn't check the size or organization of interleaved DIMMs.
The ways to configure the ddr interleaving mode
==============================================
1. In board header file(e.g.MPC8572DS.h), add default interleaving setting
under "CONFIG_EXTRA_ENV_SETTINGS", like:
#define CONFIG_EXTRA_ENV_SETTINGS \
"hwconfig=fsl_ddr:ctlr_intlv=bank" \
......
2. Run u-boot "setenv" command to configure the memory interleaving mode.
Either numerical or string value is accepted.
# disable memory controller interleaving
setenv hwconfig "fsl_ddr:ctlr_intlv=null"
# cacheline interleaving
setenv hwconfig "fsl_ddr:ctlr_intlv=cacheline"
# page interleaving
setenv hwconfig "fsl_ddr:ctlr_intlv=page"
# bank interleaving
setenv hwconfig "fsl_ddr:ctlr_intlv=bank"
# superbank
setenv hwconfig "fsl_ddr:ctlr_intlv=superbank"
# disable bank (chip-select) interleaving
setenv hwconfig "fsl_ddr:bank_intlv=null"
# bank(chip-select) interleaving cs0+cs1
setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1"
# bank(chip-select) interleaving cs2+cs3
setenv hwconfig "fsl_ddr:bank_intlv=cs2_cs3"
# bank(chip-select) interleaving (cs0+cs1) and (cs2+cs3) (2x2)
setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1_and_cs2_cs3"
# bank(chip-select) interleaving (cs0+cs1+cs2+cs3) (4x1)
setenv hwconfig "fsl_ddr:bank_intlv=cs0_cs1_cs2_cs3"
Memory controller address hashing
==================================
If the DDR controller supports address hashing, it can be enabled by hwconfig.
Syntax is:
hwconfig=fsl_ddr:addr_hash=true
Memory controller ECC on/off
============================
If ECC is enabled in board configuratoin file, i.e. #define CONFIG_DDR_ECC,
ECC can be turned on/off by hwconfig.
Syntax is
hwconfig=fsl_ddr:ecc=off
Memory testing options for mpc85xx
==================================
1. Memory test can be done once U-boot prompt comes up using mtest, or
2. Memory test can be done with Power-On-Self-Test function, activated at
compile time.
In order to enable the POST memory test, CONFIG_POST needs to be
defined in board configuraiton header file. By default, POST memory test
performs a fast test. A slow test can be enabled by changing the flag at
compiling time. To test memory bigger than 2GB, 36BIT support is needed.
Memory is tested within a 2GB window. TLBs are used to map the virtual 2GB
window to physical address so that all physical memory can be tested.
Combination of hwconfig
=======================
Hwconfig can be combined with multiple parameters, for example, on a supported
platform
hwconfig=fsl_ddr:addr_hash=true,ctlr_intlv=cacheline,bank_intlv=cs0_cs1_cs2_cs3,ecc=on
Table for dynamic ODT for DDR3
==============================
For single-slot system with quad-rank DIMM and dual-slot system, dynamic ODT may
be needed, depending on the configuration. The numbers in the following tables are
in Ohms.
* denotes dynamic ODT
Two slots system
+-----------------------+----------+---------------+-----------------------------+-----------------------------+
| Configuration | |DRAM controller| Slot 1 | Slot 2 |
+-----------+-----------+----------+-------+-------+--------------+--------------+--------------+--------------+
| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 |
+ Slot 1 | Slot 2 |Write/Read| Write | Read |-------+------+-------+------+-------+------+-------+------+
| | | | | | Write | Read | Write | Read | Write | Read | Write | Read |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 | off | off | off | off | off | 30 | 30 |
| Dual Rank | Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | off | off | 30 | 30 | 120 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 | off | off | off | 20 | 20 | | |
| Dual Rank |Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | off | off | 20 | 20 | 120 *| off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 *| off | | | off | off | 20 | 20 |
|Single Rank| Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | 20 | 20 | | | 120 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 75 | 120 *| off | | | 30 | 30 | | |
|Single Rank|Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 75 | 30 | 30 | | | 120 *| off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Dual Rank | Empty | Slot 1 | off | 75 | 40 | off | off | off | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty | Dual Rank | Slot 2 | off | 75 | | | | | 40 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
|Single Rank| Empty | Slot 1 | off | 75 | 40 | off | | | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty |Single Rank| Slot 2 | off | 75 | | | | | 40 | off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
Single slot system
+-------------+------------+---------------+-----------------------------+-----------------------------+
| | |DRAM controller| Rank 1 | Rank 2 | Rank 3 | Rank 4 |
|Configuration| Write/Read |-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Write | Read | Write | Read | Write | Read | Write | Read | Write | Read |
+-------------+------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R1 | off | 75 | 120 *| off | off | off | 20 | 20 | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R2 | off | 75 | off | 20 | 120 | off | 20 | 20 | off | off |
| Quad Rank |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R3 | off | 75 | 20 | 20 | off | off | 120 *| off | off | off |
| |------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R4 | off | 75 | 20 | 20 | off | off | off | 20 | 120 | off |
+-------------+------------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | R1 | off | 75 | 40 | off | off | off |
| Dual Rank |------------+-------+-------+-------+------+-------+------+
| | R2 | off | 75 | 40 | off | off | off |
+-------------+------------+-------+-------+-------+------+-------+------+
| Single Rank | R1 | off | 75 | 40 | off |
+-------------+------------+-------+-------+-------+------+
Reference http://www.xrosstalkmag.com/mag_issues/xrosstalk_oct08_final.pdf
http://download.micron.com/pdf/technotes/ddr3/tn4108_ddr3_design_guide.pdf
Table for ODT for DDR2
======================
Two slots system
+-----------------------+----------+---------------+-----------------------------+-----------------------------+
| Configuration | |DRAM controller| Slot 1 | Slot 2 |
+-----------+-----------+----------+-------+-------+--------------+--------------+--------------+--------------+
| | | | | | Rank 1 | Rank 2 | Rank 1 | Rank 2 |
+ Slot 1 | Slot 2 |Write/Read| Write | Read |-------+------+-------+------+-------+------+-------+------+
| | | | | | Write | Read | Write | Read | Write | Read | Write | Read |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 150 | off | off | off | off | 75 | 75 | off | off |
| Dual Rank | Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 150 | 75 | 75 | off | off | off | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 150 | off | off | off | off | 75 | 75 | | |
| Dual Rank |Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 150 | 75 | 75 | off | off | off | off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 150 | off | off | | | 75 | 75 | off | off |
|Single Rank| Dual Rank |----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 150 | 75 | 75 | | | off | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 1 | off | 150 | off | off | | | 75 | 75 | | |
|Single Rank|Single Rank|----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| | | Slot 2 | off | 150 | 75 | 75 | | | off | off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Dual Rank | Empty | Slot 1 | off | 75 | 150 | off | off | off | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty | Dual Rank | Slot 2 | off | 75 | | | | | 150 | off | off | off |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
|Single Rank| Empty | Slot 1 | off | 75 | 150 | off | | | | | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
| Empty |Single Rank| Slot 2 | off | 75 | | | | | 150 | off | | |
+-----------+-----------+----------+-------+-------+-------+------+-------+------+-------+------+-------+------+
Single slot system
+-------------+------------+---------------+-----------------------------+
| | |DRAM controller| Rank 1 | Rank 2 |
|Configuration| Write/Read |-------+-------+-------+------+-------+------+
| | | Write | Read | Write | Read | Write | Read |
+-------------+------------+-------+-------+-------+------+-------+------+
| | R1 | off | 75 | 150 | off | off | off |
| Dual Rank |------------+-------+-------+-------+------+-------+------+
| | R2 | off | 75 | 150 | off | off | off |
+-------------+------------+-------+-------+-------+------+-------+------+
| Single Rank | R1 | off | 75 | 150 | off |
+-------------+------------+-------+-------+-------+------+
Reference http://www.samsung.com/global/business/semiconductor/products/dram/downloads/applicationnote/ddr2_odt_control_200603.pdf
Interactive DDR debugging
===========================
For DDR parameter tuning up and debugging, the interactive DDR debugging can
be activated by saving an environment variable "ddr_interactive". The value
doesn't matter. Once activated, U-boot prompts "FSL DDR>" before enabling DDR
controller. The available commands can be seen by typing "help".
The example flow of using interactive debugging is
type command "compute" to calculate the parameters from the default
type command "print" with arguments to show SPD, options, registers
type command "edit" with arguments to change any if desired
type command "go" to continue calculation and enable DDR controller
type command "reset" to reset the board
type command "recompute" to reload SPD and start over
Note, check "next_step" to show the flow. For example, after edit opts, the
next_step is STEP_ASSIGN_ADDRESSES. After editing registers, the next_step is
STEP_PROGRAM_REGS. Upon issuing command "go", DDR controller will be enabled
with current setting without further calculation.
The detail syntax for each commands are
print [c<n>] [d<n>] [spd] [dimmparms] [commonparms] [opts] [addresses] [regs]
c<n> - the controller number, eg. c0, c1
d<n> - the DIMM number, eg. d0, d1
spd - print SPD data
dimmparms - DIMM parameters, calculated from SPD
commonparms - lowest common parameters for all DIMMs
opts - options
addresses - address assignment (not implemented yet)
regs - controller registers
edit <c#> <d#> <spd|dimmparms|commonparms|opts|addresses|regs> <element> <value>
c<n> - the controller number, eg. c0, c1
d<n> - the DIMM number, eg. d0, d1
spd - print SPD data
dimmparms - DIMM parameters, calculated from SPD
commonparms - lowest common parameters for all DIMMs
opts - options
addresses - address assignment (not implemented yet)
regs - controller registers
<element> - name of the modified element
byte number if the object is SPD
<value> - decimal or heximal (prefixed with 0x) numbers
reset
no arguement - reset the board
recompute
no argument - reload SPD and start over
compute
no argument - recompute from current next_step
next_step
no argument - show current next_step
help
no argument - print a list of all commands
go
no argument - program memory controller(s) and continue with U-boot
Examples of debugging flow
FSL DDR>compute
Detected UDIMM UG51U6400N8SU-ACF
SL DDR>print
print [c<n>] [d<n>] [spd] [dimmparms] [commonparms] [opts] [addresses] [regs]
FSL DDR>print dimmparms
DIMM parameters: Controller=0 DIMM=0
DIMM organization parameters:
module part name = UG51U6400N8SU-ACF
rank_density = 2147483648 bytes (2048 megabytes)
capacity = 4294967296 bytes (4096 megabytes)
burst_lengths_bitmask = 0C
base_addresss = 0 (00000000 00000000)
n_ranks = 2
data_width = 64
primary_sdram_width = 64
ec_sdram_width = 0
registered_dimm = 0
n_row_addr = 15
n_col_addr = 10
edc_config = 0
n_banks_per_sdram_device = 8
tCKmin_X_ps = 1500
tCKmin_X_minus_1_ps = 0
tCKmin_X_minus_2_ps = 0
tCKmax_ps = 0
caslat_X = 960
tAA_ps = 13125
caslat_X_minus_1 = 0
caslat_X_minus_2 = 0
caslat_lowest_derated = 0
tRCD_ps = 13125
tRP_ps = 13125
tRAS_ps = 36000
tWR_ps = 15000
tWTR_ps = 7500
tRFC_ps = 160000
tRRD_ps = 6000
tRC_ps = 49125
refresh_rate_ps = 7800000
tIS_ps = 0
tIH_ps = 0
tDS_ps = 0
tDH_ps = 0
tRTP_ps = 7500
tDQSQ_max_ps = 0
tQHS_ps = 0
FSL DDR>edit c0 opts ECC_mode 0
FSL DDR>edit c0 regs cs0_bnds 0x000000FF
FSL DDR>go
2 GiB left unmapped
4 GiB (DDR3, 64-bit, CL=9, ECC off)
DDR Chip-Select Interleaving Mode: CS0+CS1
Testing 0x00000000 - 0x7fffffff
Testing 0x80000000 - 0xffffffff
Remap DDR 2 GiB left unmapped
POST memory PASSED
Flash: 128 MiB
L2: 128 KB enabled
Corenet Platform Cache: 1024 KB enabled
SERDES: timeout resetting bank 3
SRIO1: disabled
SRIO2: disabled
MMC: FSL_ESDHC: 0
EEPROM: Invalid ID (ff ff ff ff)
PCIe1: disabled
PCIe2: Root Complex, x1, regs @ 0xfe201000
01:00.0 - 8086:10d3 - Network controller
PCIe2: Bus 00 - 01
PCIe3: disabled
In: serial
Out: serial
Err: serial
Net: Initializing Fman
Fman1: Uploading microcode version 101.8.0
e1000: 00:1b:21:81:d2:e0
FM1@DTSEC1, FM1@DTSEC2, FM1@DTSEC3, FM1@DTSEC4, FM1@DTSEC5, e1000#0 [PRIME]
Warning: e1000#0 MAC addresses don't match:
Address in SROM is 00:1b:21:81:d2:e0
Address in environment is 00:e0:0c:00:ea:05
Hit any key to stop autoboot: 0
=>