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
|
#
# Copyright (c) 2012 Michael Walle
# Michael Walle <michael@walle.cc>
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA
#
# Refer docs/README.kwimage for more details about how-to configure
# and create kirkwood boot image
#
# Boot Media configurations
BOOT_FROM spi
# SOC registers configuration using bootrom header extension
# Maximum KWBIMAGE_MAX_CONFIG configurations allowed
# Configure RGMII-0/1 interface pad voltage to 1.8V
DATA 0xFFD100E0 0x1B1B1B9B
# L2 RAM Timing 0
DATA 0xFFD20134 0xBBBBBBBB
# not further specified in HW manual, timing taken from original vendor port
# L2 RAM Timing 1
DATA 0xFFD20138 0x00BBBBBB
# not further specified in HW manual, timing taken from original vendor port
# DDR Configuration register
DATA 0xFFD01400 0x43000618
# bit13-0: 0x618, 1560 DDR2 clks refresh rate
# bit23-14: 0 required
# bit24: 1, enable exit self refresh mode on DDR access
# bit25: 1 required
# bit29-26: 0 required
# bit31-30: 0b01 required
# DDR Controller Control Low
DATA 0xFFD01404 0x39543000
# bit3-0: 0 required
# bit4: 0, addr/cmd in same cycle
# bit5: 0, clk is driven during self refresh, we don't care for APX
# bit6: 0, use recommended falling edge of clk for addr/cmd
# bit11-7: 0 required
# bit12: 1 required
# bit13: 1 required
# bit14: 0, input buffer always powered up
# bit17-15: 0 required
# bit18: 1, cpu lock transaction enabled
# bit19: 0 required
# bit23-20: 5, recommended value for CL=5 and STARTBURST_DEL disabled bit31=0
# bit27-24: 9, CL+4, STARTBURST sample stages, for freqs 400MHz, unbuffered DIMM
# bit30-28: 3 required
# bit31: 0, no additional STARTBURST delay
# DDR Timing (Low)
DATA 0xFFD01408 0x3302444F
# bit3-0: 0xf, 16 cycle tRAS (tRAS[3-0])
# bit7-4: 4, 5 cycle tRCD
# bit11-8: 4, 5 cyle tRP
# bit15-12: 4, 5 cyle tWR
# bit19-16: 2, 3 cyle tWTR
# bit20: 0, 16 cycle tRAS (tRAS[4])
# bit23-21: 0 required
# bit27-24: 3, 4 cycle tRRD
# bit31-28: 3, 4 cyle tRTP
# DDR Timing (High)
DATA 0xFFD0140C 0x00000823
# bit6-0: 0x23, 35 cycle tRFC
# bit8-7: 0, 1 cycle tR2R
# bit10-9: 0, 1 cyle tR2W
# bit12-11: 1, 2 cylce tW2W
# bit31-13: 0 required
# DDR Address Control
DATA 0xFFD01410 0x00000009
# bit1-0: 1, Cs0width=x16
# bit3-2: 2, Cs0size=512Mbit
# bit5-4: 0, Cs1width=nonexistent
# bit7-6: 0, Cs1size=nonexistent
# bit9-8: 0, Cs2width=nonexistent
# bit11-10: 0, Cs2size=nonexistent
# bit13-12: 0, Cs3width=nonexistent
# bit15-14: 0, Cs3size=nonexistent
# bit16: 0, Cs0AddrSel
# bit17: 0, Cs1AddrSel
# bit18: 0, Cs2AddrSel
# bit19: 0, Cs3AddrSel
# bit31-20: 0 required
# DDR Open Pages Control
DATA 0xFFD01414 0x00000000
# bit0: 0, OPEn=OpenPage enabled
# bit31-1: 0 required
# DDR Operation
DATA 0xFFD01418 0x00000000
# bit3-0: 0, Cmd=Normal SDRAM Mode
# bit31-4: 0 required
# DDR Mode
DATA 0xFFD0141C 0x00000652
# bit2-0: 2, Burst Length (2 required)
# bit3: 0, Burst Type (0 required)
# bit6-4: 5, CAS Latency (CL) 5
# bit7: 0, (Test Mode) Normal operation
# bit8: 0, (Reset DLL) Normal operation
# bit11-9: 3, Write recovery for auto-precharge (3 required)
# bit12: 0, Fast Active power down exit time (0 required)
# bit31-13: 0 required
# DDR Extended Mode
DATA 0xFFD01420 0x00000042
# bit0: 0, DRAM DLL enabled
# bit1: 1, DRAM drive strength reduced
# bit2: 0, ODT control Rtt[0] (Rtt=2, 150 ohm termination)
# bit5-3: 0 required
# bit6: 1, ODT control Rtt[1] (Rtt=2, 150 ohm termination)
# bit9-7: 0 required
# bit10: 0, differential DQS enabled
# bit11: 0 required
# bit12: 0, DRAM output buffer enabled
# bit31-13: 0 required
# DDR Controller Control High
DATA 0xFFD01424 0x0000F17F
# bit2-0: 0x7 required
# bit3: 1, MBUS Burst Chop disabled
# bit6-4: 0x7 required
# bit7: 0 required (???)
# bit8: 1, add writepath sample stage, must be 1 for DDR freq >= 300MHz
# bit9: 0, no half clock cycle addition to dataout
# bit10: 0, 1/4 clock cycle skew enabled for addr/ctl signals
# bit11: 0, 1/4 clock cycle skew disabled for write mesh
# bit15-12: 0xf required
# bit31-16: 0 required
# DDR2 ODT Read Timing (default values)
DATA 0xFFD01428 0x00085520
# bit3-0: 0 required
# bit7-4: 2, 2 cycles from read command to assertion of M_ODT signal
# bit11-8: 5, 5 cycles from read command to de-assertion of M_ODT signal
# bit15-12: 5, 5 cycles from read command to assertion of internal ODT signal
# bit19-16: 8, 8 cycles from read command to de-assertion of internal ODT signal
# bit31-20: 0 required
# DDR2 ODT Write Timing (default values)
DATA 0xFFD0147C 0x00008552
# bit3-0: 2, 2 cycles from write comand to assertion of M_ODT signal
# bit7-4: 5, 5 cycles from write command to de-assertion of M_ODT signal
# bit15-12: 5, 5 cycles from write command to assertion of internal ODT signal
# bit19-16: 8, 8 cycles from write command to de-assertion of internal ODT signal
# bit31-16: 0 required
# CS[0]n Base address
DATA 0xFFD01500 0x00000000
# at 0x0
# CS[0]n Size
DATA 0xFFD01504 0x03FFFFF1
# bit0: 1, Window enabled
# bit1: 0, Write Protect disabled
# bit3-2: 0x0, CS0 hit selected
# bit23-4: 0xfffff required
# bit31-24: 0x03, Size (i.e. 64MB)
# CS[1]n Size
DATA 0xFFD0150C 0x00000000
# window disabled
# CS[2]n Size
DATA 0xFFD01514 0x00000000
# window disabled
# CS[3]n Size
DATA 0xFFD0151C 0x00000000
# window disabled
# DDR ODT Control (Low)
DATA 0xFFD01494 0x003C0000
# bit3-0: 0b0000, (read) M_ODT[0] is not asserted during read from DRAM
# bit7-4: 0b0000, (read) M_ODT[1] is not asserted during read from DRAM
# bit15-8: 0 required
# bit19-16: 0b1100, (write) M_ODT[0] is asserted during write to DRAM CS2, CS3
# bit23-20: 0b0011, (write) M_ODT[1] is asserted during write to DRAM CS0, CS1
# bit31-24: 0 required
# DDR ODT Control (High)
DATA 0xFFD01498 0x00000000
# bit1-0: 0, M_ODT[0] assertion is controlled by ODT Control Low register
# bit3-2: 0, M_ODT[1] assertion is controlled by ODT Control Low register
# bit31-4 0 required
# CPU ODT Control
DATA 0xFFD0149C 0x0000E80F
# bit3-0: 0b1111, internal ODT is asserted during read from DRAM bank 0-3
# bit7-4: 0b0000, internal ODT is not asserted during write to DRAM bank 0-3
# bit9-8: 0, Internal ODT assertion is controlled by fiels
# bit11-10: 2, M_DQ, M_DM, and M_DQS I/O buffer ODT 75 ohm
# bit13-12: 2, M_STARTBURST_IN I/O buffer ODT 75 ohm
# bit14: 1, M_STARTBURST_IN ODT enabled
# bit15: 1, DDR IO ODT Unit: Drive ODT calibration values
# bit20-16: 0, Pad N channel driving strength for ODT
# bit25-21: 0, Pad P channel driving strength for ODT
# bit31-26: 0 required
# DDR Initialization Control
DATA 0xFFD01480 0x00000001
# bit0: 1, enable DDR init upon this register write
# bit31-1: 0, required
# End of Header extension
DATA 0x0 0x0
|
