3 # Marvell Semiconductor <www.marvell.com>
4 # Written-by: Prafulla Wadaskar <prafulla@marvell.com>
6 # SPDX-License-Identifier: GPL-2.0+
8 # Refer doc/README.kwbimage for more details about how-to configure
9 # and create kirkwood boot image
12 # Boot Media configurations
17 # SOC registers configuration using bootrom header extension
18 # Maximum KWBIMAGE_MAX_CONFIG configurations allowed
20 # Configure RGMII-0 interface pad voltage to 1.8V
21 DATA 0xFFD100e0 0x1b1b1b9b
23 #Dram initalization for SINGLE x16 CL=5 @ 400MHz
24 DATA 0xFFD01400 0x43000c30 # DDR Configuration register
25 # bit13-0: 0xc30 (3120 DDR2 clks refresh rate)
27 # bit24: 1= enable exit self refresh mode on DDR access
32 DATA 0xFFD01404 0x37543000 # DDR Controller Control Low
33 # bit 4: 0=addr/cmd in smame cycle
34 # bit 5: 0=clk is driven during self refresh, we don't care for APX
35 # bit 6: 0=use recommended falling edge of clk for addr/cmd
36 # bit14: 0=input buffer always powered up
37 # bit18: 1=cpu lock transaction enabled
38 # bit23-20: 5=recommended value for CL=5 and STARTBURST_DEL disabled bit31=0
39 # bit27-24: 7= CL+2, STARTBURST sample stages, for freqs 400MHz, unbuffered DIMM
40 # bit30-28: 3 required
41 # bit31: 0=no additional STARTBURST delay
43 DATA 0xFFD01408 0x22125451 # DDR Timing (Low) (active cycles value +1)
54 DATA 0xFFD0140C 0x00000a33 # DDR Timing (High)
59 # bit31-13: zero required
61 DATA 0xFFD01410 0x000000cc # DDR Address Control
62 # bit1-0: 00, Cs0width=x8
63 # bit3-2: 11, Cs0size=1Gb
64 # bit5-4: 00, Cs1width=x8
65 # bit7-6: 11, Cs1size=1Gb
66 # bit9-8: 00, Cs2width=nonexistent
67 # bit11-10: 00, Cs2size =nonexistent
68 # bit13-12: 00, Cs3width=nonexistent
69 # bit15-14: 00, Cs3size =nonexistent
70 # bit16: 0, Cs0AddrSel
71 # bit17: 0, Cs1AddrSel
72 # bit18: 0, Cs2AddrSel
73 # bit19: 0, Cs3AddrSel
74 # bit31-20: 0 required
76 DATA 0xFFD01414 0x00000000 # DDR Open Pages Control
77 # bit0: 0, OpenPage enabled
80 DATA 0xFFD01418 0x00000000 # DDR Operation
81 # bit3-0: 0x0, DDR cmd
84 DATA 0xFFD0141C 0x00000C52 # DDR Mode
85 # bit2-0: 2, BurstLen=2 required
86 # bit3: 0, BurstType=0 required
88 # bit7: 0, TestMode=0 normal
89 # bit8: 0, DLL reset=0 normal
90 # bit11-9: 6, auto-precharge write recovery ????????????
91 # bit12: 0, PD must be zero
92 # bit31-13: 0 required
94 DATA 0xFFD01420 0x00000042 # DDR Extended Mode
95 # bit0: 0, DDR DLL enabled
96 # bit1: 1, DDR drive strength reduced
97 # bit2: 0, DDR ODT control lsd (disabled)
98 # bit5-3: 000, required
99 # bit6: 1, DDR ODT control msb, (disabled)
100 # bit9-7: 000, required
101 # bit10: 0, differential DQS enabled
103 # bit12: 0, DDR output buffer enabled
104 # bit31-13: 0 required
106 DATA 0xFFD01424 0x0000F17F # DDR Controller Control High
107 # bit2-0: 111, required
108 # bit3 : 1 , MBUS Burst Chop disabled
109 # bit6-4: 111, required
111 # bit8 : 1 , add writepath sample stage, must be 1 for DDR freq >= 300MHz
112 # bit9 : 0 , no half clock cycle addition to dataout
113 # bit10 : 0 , 1/4 clock cycle skew enabled for addr/ctl signals
114 # bit11 : 0 , 1/4 clock cycle skew disabled for write mesh
115 # bit15-12: 1111 required
116 # bit31-16: 0 required
118 DATA 0xFFD01428 0x00085520 # DDR2 ODT Read Timing (default values)
119 DATA 0xFFD0147C 0x00008552 # DDR2 ODT Write Timing (default values)
121 DATA 0xFFD01500 0x00000000 # CS[0]n Base address to 0x0
122 DATA 0xFFD01504 0x0FFFFFF1 # CS[0]n Size
123 # bit0: 1, Window enabled
124 # bit1: 0, Write Protect disabled
125 # bit3-2: 00, CS0 hit selected
126 # bit23-4: ones, required
127 # bit31-24: 0x0F, Size (i.e. 256MB)
129 DATA 0xFFD01508 0x10000000 # CS[1]n Base address to 256Mb
130 DATA 0xFFD0150C 0x0FFFFFF5 # CS[1]n Size 256Mb Window enabled for CS1
132 DATA 0xFFD01514 0x00000000 # CS[2]n Size, window disabled
133 DATA 0xFFD0151C 0x00000000 # CS[3]n Size, window disabled
135 DATA 0xFFD01494 0x00120012 # DDR ODT Control (Low)
136 # bit3-0: 0010, (read) M_ODT[0] is asserted during read from DRAM CS1
137 # bit7-4: 0001, (read) M_ODT[1] is asserted during read from DRAM CS0
138 # bit19-16: 0010, (write) M_ODT[0] is asserted during write to DRAM CS1.
139 # bit23-20: 0001, (write) M_ODT[1] is asserted during write to DRAM CS0.
140 DATA 0xFFD01498 0x00000000 # DDR ODT Control (High)
142 DATA 0xFFD0149C 0x0000E40f # CPU ODT Control
143 # bit3-0: 1111, internal ODT is asserted during read from DRAM bank 0-3
144 # bit11-10: 01, M_DQ, M_DM, and M_DQS I/O buffer ODT Select: 150 ohm
145 # bit13-12: 10, M_STARTBURST_IN I/O buffer ODT Select: 75 ohm
146 # bit14: 1, M_STARTBURST_IN ODT: Enabled
147 # bit15: 1, DDR IO ODT Unit: Use ODT block
148 DATA 0xFFD01480 0x00000001 # DDR Initialization Control
149 #bit0=1, enable DDR init upon this register write
151 # End of Header extension