5 # Based on Kirkwood support:
7 # Marvell Semiconductor <www.marvell.com>
8 # Written-by: Prafulla Wadaskar <prafulla <at> marvell.com>
10 # See file CREDITS for list of people who contributed to this
13 # This program is free software; you can redistribute it and/or
14 # modify it under the terms of the GNU General Public License as
15 # published by the Free Software Foundation; either version 2 of
16 # the License, or (at your option) any later version.
18 # This program is distributed in the hope that it will be useful,
19 # but WITHOUT ANY WARRANTY; without even the implied warranty of
20 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 # GNU General Public License for more details.
23 # You should have received a copy of the GNU General Public License
24 # along with this program; If not, see <http://www.gnu.org/licenses/>.
26 # Refer doc/README.kwbimage for more details about how-to configure
27 # and create kirkwood boot image
30 # Boot Media configurations
35 # SOC registers configuration using bootrom header extension
36 # Maximum KWBIMAGE_MAX_CONFIG configurations allowed
38 # Configure RGMII-0 interface pad voltage to 1.8V
39 DATA 0xffd100e0 0x1b1b1b9b
41 #Dram initalization for SINGLE x16 CL=5 @ 400MHz
42 DATA 0xffd01400 0x43000c30 # DDR Configuration register
43 # bit13-0: 0xc30 (3120 DDR2 clks refresh rate)
45 # bit24: 1= enable exit self refresh mode on DDR access
50 DATA 0xffd01404 0x37543000 # DDR Controller Control Low
51 # bit 4: 0=addr/cmd in smame cycle
52 # bit 5: 0=clk is driven during self refresh, we don't care for APX
53 # bit 6: 0=use recommended falling edge of clk for addr/cmd
54 # bit14: 0=input buffer always powered up
55 # bit18: 1=cpu lock transaction enabled
56 # bit23-20: 5=recommended value for CL=5 and STARTBURST_DEL disabled bit31=0
57 # bit27-24: 7= CL+2, STARTBURST sample stages, for freqs 400MHz, unbuffered DIMM
58 # bit30-28: 3 required
59 # bit31: 0=no additional STARTBURST delay
61 DATA 0xffd01408 0x22125451 # DDR Timing (Low) (active cycles value +1)
72 DATA 0xffd0140c 0x00000a33 # DDR Timing (High)
77 # bit31-13: zero required
79 DATA 0xffd01410 0x000000cc # DDR Address Control
80 # bit1-0: 00, Cs0width=x8
81 # bit3-2: 11, Cs0size=1Gb
82 # bit5-4: 00, Cs1width=x8
83 # bit7-6: 11, Cs1size=1Gb
84 # bit9-8: 00, Cs2width=nonexistent
85 # bit11-10: 00, Cs2size =nonexistent
86 # bit13-12: 00, Cs3width=nonexistent
87 # bit15-14: 00, Cs3size =nonexistent
88 # bit16: 0, Cs0AddrSel
89 # bit17: 0, Cs1AddrSel
90 # bit18: 0, Cs2AddrSel
91 # bit19: 0, Cs3AddrSel
92 # bit31-20: 0 required
94 DATA 0xffd01414 0x00000000 # DDR Open Pages Control
95 # bit0: 0, OpenPage enabled
98 DATA 0xffd01418 0x00000000 # DDR Operation
99 # bit3-0: 0x0, DDR cmd
100 # bit31-4: 0 required
102 DATA 0xffd0141c 0x00000c52 # DDR Mode
103 # bit2-0: 2, BurstLen=2 required
104 # bit3: 0, BurstType=0 required
106 # bit7: 0, TestMode=0 normal
107 # bit8: 0, DLL reset=0 normal
108 # bit11-9: 6, auto-precharge write recovery ????????????
109 # bit12: 0, PD must be zero
110 # bit31-13: 0 required
112 DATA 0xffd01420 0x00000040 # DDR Extended Mode
113 # bit0: 0, DDR DLL enabled
114 # bit1: 0, DDR drive strenght normal
115 # bit2: 0, DDR ODT control lsd (disabled)
116 # bit5-3: 000, required
117 # bit6: 1, DDR ODT control msb, (disabled)
118 # bit9-7: 000, required
119 # bit10: 0, differential DQS enabled
121 # bit12: 0, DDR output buffer enabled
122 # bit31-13: 0 required
124 DATA 0xffd01424 0x0000f17f # DDR Controller Control High
125 # bit2-0: 111, required
126 # bit3 : 1 , MBUS Burst Chop disabled
127 # bit6-4: 111, required
129 # bit8 : 1 , add writepath sample stage, must be 1 for DDR freq >= 300MHz
130 # bit9 : 0 , no half clock cycle addition to dataout
131 # bit10 : 0 , 1/4 clock cycle skew enabled for addr/ctl signals
132 # bit11 : 0 , 1/4 clock cycle skew disabled for write mesh
133 # bit15-12: 1111 required
134 # bit31-16: 0 required
136 DATA 0xffd01428 0x00085520 # DDR2 ODT Read Timing (default values)
137 DATA 0xffd0147c 0x00008552 # DDR2 ODT Write Timing (default values)
139 DATA 0xffd01500 0x00000000 # CS[0]n Base address to 0x0
140 DATA 0xffd01504 0x0ffffff1 # CS[0]n Size
141 # bit0: 1, Window enabled
142 # bit1: 0, Write Protect disabled
143 # bit3-2: 00, CS0 hit selected
144 # bit23-4: ones, required
145 # bit31-24: 0x0F, Size (i.e. 256MB)
147 DATA 0xffd01508 0x10000000 # CS[1]n Base address to 256Mb
148 DATA 0xffd0150c 0x00000000 # CS[2]n Size, window disabled
150 DATA 0xffd01514 0x00000000 # CS[2]n Size, window disabled
151 DATA 0xffd0151c 0x00000000 # CS[3]n Size, window disabled
153 DATA 0xffd01494 0x00030000 # DDR ODT Control (Low)
154 # bit3-0: 2, ODT0Rd, MODT[0] asserted during read from DRAM CS1
155 # bit7-4: 1, ODT0Rd, MODT[0] asserted during read from DRAM CS0
156 # bit19-16:2, ODT0Wr, MODT[0] asserted during write to DRAM CS1
157 # bit23-20:1, ODT0Wr, MODT[0] asserted during write to DRAM CS0
159 DATA 0xffd01498 0x00000000 # DDR ODT Control (High)
160 # bit1-0: 00, ODT0 controlled by ODT Control (low) register above
161 # bit3-2: 01, ODT1 active NEVER!
162 # bit31-4: zero, required
164 DATA 0xffd0149c 0x0000e803 # CPU ODT Control
165 DATA 0xffd01480 0x00000001 # DDR Initialization Control
166 #bit0=1, enable DDR init upon this register write
168 # End of Header extension