2 # Copyright (C) 2011 Simon Guinot <sguinot@lacie.com>
4 # Based on Kirkwood support:
6 # Marvell Semiconductor <www.marvell.com>
7 # Written-by: Prafulla Wadaskar <prafulla@marvell.com>
9 # SPDX-License-Identifier: GPL-2.0+
11 # Refer doc/README.kwbimage for more details about how-to configure
12 # and create kirkwood boot image
15 # Boot Media configurations
16 BOOT_FROM spi # Boot from SPI flash
18 # SOC registers configuration using bootrom header extension
19 # Maximum KWBIMAGE_MAX_CONFIG configurations allowed
21 # Configure RGMII-0 interface pad voltage to 1.8V
22 DATA 0xFFD100e0 0x1B1B1B9B
24 #Dram initalization for SINGLE x16 CL=5 @ 400MHz
25 DATA 0xFFD01400 0x43000618 # DDR Configuration register
26 # bit13-0: 0xa00 (2560 DDR2 clks refresh rate)
28 # bit24: 1= enable exit self refresh mode on DDR access
33 DATA 0xFFD01404 0x35143000 # DDR Controller Control Low
34 # bit 4: 0=addr/cmd in smame cycle
35 # bit 5: 0=clk is driven during self refresh, we don't care for APX
36 # bit 6: 0=use recommended falling edge of clk for addr/cmd
37 # bit14: 0=input buffer always powered up
38 # bit18: 1=cpu lock transaction enabled
39 # bit23-20: 5=recommended value for CL=5 and STARTBURST_DEL disabled bit31=0
40 # bit27-24: 8= CL+3, STARTBURST sample stages, for freqs 400MHz, unbuffered DIMM
41 # bit30-28: 3 required
42 # bit31: 0=no additional STARTBURST delay
44 DATA 0xFFD01408 0x11012228 # DDR Timing (Low) (active cycles value +1)
54 DATA 0xFFD0140C 0x00000A19 # DDR Timing (High)
59 # bit31-13: zero required
61 DATA 0xFFD01410 0x00000008 # DDR Address Control
62 # bit1-0: 00, Cs0width=x8
63 # bit3-2: 10, Cs0size=512Mb
64 # bit5-4: 00, Cs2width=nonexistent
65 # bit7-6: 00, Cs1size =nonexistent
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 0x00000632 # 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 0x00000004 # DDR Extended Mode
95 # bit0: 0, DDR DLL enabled
96 # bit1: 1, DDR drive strenght reduced
97 # bit2: 1, DDR ODT control lsd enabled
98 # bit5-3: 000, required
99 # bit6: 1, DDR ODT control msb, enabled
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 0x0000F07F # DDR Controller Control High
107 # bit2-0: 111, required
108 # bit3 : 1 , MBUS Burst Chop disabled
109 # bit6-4: 111, required
110 # bit7 : 1 , D2P Latency enabled
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 0x07FFFFF1 # 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: 0x07, Size (i.e. 128MB)
129 DATA 0xFFD0150C 0x00000000 # CS[1]n Size, window disabled
130 DATA 0xFFD01514 0x00000000 # CS[2]n Size, window disabled
131 DATA 0xFFD0151C 0x00000000 # CS[3]n Size, window disabled
133 DATA 0xFFD01494 0x00010000 # DDR ODT Control (Low)
134 # bit3-0: 1, ODT0Rd, MODT[0] asserted during read from DRAM CS0
135 # bit19-16:1, ODT0Wr, MODT[0] asserted during write to DRAM CS0
137 DATA 0xFFD01498 0x00000000 # DDR ODT Control (High)
138 # bit1-0: 00, ODT0 controlled by ODT Control (low) register above
139 # bit3-2: 01, ODT1 active NEVER!
140 # bit31-4: zero, required
142 DATA 0xFFD0149C 0x0000E40F # CPU ODT Control
143 # bit3-0: 1, ODT0Rd, Internal ODT asserted during read from DRAM bank0
144 # bit7-4: 1, ODT0Wr, Internal ODT asserted during write to DRAM bank0
145 # bit11-10:1, DQ_ODTSel. ODT select turned on
147 DATA 0xFFD01480 0x00000001 # DDR Initialization Control
148 #bit0=1, enable DDR init upon this register write
150 # End of Header extension