3 # Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
5 # Based on Kirkwood support:
7 # Marvell Semiconductor <www.marvell.com>
8 # Written-by: Prafulla Wadaskar <prafulla@marvell.com>
10 # SPDX-License-Identifier: GPL-2.0+
12 # Refer doc/README.kwbimage for more details about how-to configure
13 # and create kirkwood boot image
16 # Boot Media configurations
21 # SOC registers configuration using bootrom header extension
22 # Maximum KWBIMAGE_MAX_CONFIG configurations allowed
24 # Configure RGMII-0 interface pad voltage to 1.8V
25 DATA 0xFFD100e0 0x1b1b1b9b
27 #Dram initalization for SINGLE x16 CL=5 @ 400MHz
28 DATA 0xFFD01400 0x43000c30 # DDR Configuration register
29 # bit13-0: 0xc30, 3120 DDR2 clks refresh rate
30 # bit23-14: 0 required
31 # bit24: 1, enable exit self refresh mode on DDR access
33 # bit29-26: 0 required
34 # bit31-30: 0b01 required
36 DATA 0xFFD01404 0x39543000 # DDR Controller Control Low
38 # bit4: 0, addr/cmd in smame cycle
39 # bit5: 0, clk is driven during self refresh, we don't care for APX
40 # bit6: 0, use recommended falling edge of clk for addr/cmd
44 # bit14: 0, input buffer always powered up
45 # bit17-15: 0 required
46 # bit18: 1, cpu lock transaction enabled
48 # bit23-20: 5, recommended value for CL=5 and STARTBURST_DEL disabled bit31=0
49 # bit27-24: 9, CL+4, STARTBURST sample stages, for freqs 400MHz, unbuffered DIMM
50 # bit30-28: 3 required
51 # bit31: 0, no additional STARTBURST delay
53 DATA 0xFFD01408 0x22125451 # DDR Timing (Low)
54 # bit3-0: 1, 18 cycle tRAS (tRAS[3-0])
55 # bit7-4: 5, 6 cycle tRCD
56 # bit11-8: 4, 5 cyle tRP
57 # bit15-12: 5, 6 cyle tWR
58 # bit19-16: 2, 3 cyle tWTR
59 # bit20: 1, 18 cycle tRAS (tRAS[4])
60 # bit23-21: 0 required
61 # bit27-24: 2, 3 cycle tRRD
62 # bit31-28: 2, 3 cyle tRTP
64 DATA 0xFFD0140C 0x00000833 # DDR Timing (High)
65 # bit6-0: 0x33, 33 cycle tRFC
66 # bit8-7: 0, 1 cycle tR2R
67 # bit10-9: 0, 1 cyle tR2W
68 # bit12-11: 1, 2 cylce tW2W
69 # bit31-13: 0 required
71 DATA 0xFFD01410 0x0000000c # DDR Address Control
72 # bit1-0: 0, Cs0width=x8
73 # bit3-2: 3, Cs0size=1Gb
74 # bit5-4: 0, Cs1width=nonexistent
75 # bit7-6: 0, Cs1size=nonexistent
76 # bit9-8: 0, Cs2width=nonexistent
77 # bit11-10: 0, Cs2size=nonexistent
78 # bit13-12: 0, Cs3width=nonexistent
79 # bit15-14: 0, Cs3size=nonexistent
80 # bit16: 0, Cs0AddrSel
81 # bit17: 0, Cs1AddrSel
82 # bit18: 0, Cs2AddrSel
83 # bit19: 0, Cs3AddrSel
84 # bit31-20: 0 required
86 DATA 0xFFD01414 0x00000000 # DDR Open Pages Control
87 # bit0: 0, OPEn=OpenPage enabled
90 DATA 0xFFD01418 0x00000000 # DDR Operation
91 # bit3-0: 0, Cmd=Normal SDRAM Mode
94 DATA 0xFFD0141C 0x00000C52 # DDR Mode
95 # bit2-0: 2, Burst Length (2 required)
96 # bit3: 0, Burst Type (0 required)
97 # bit6-4: 5, CAS Latency (CL) 5
98 # bit7: 0, (Test Mode) Normal operation
99 # bit8: 0, (Reset DLL) Normal operation
100 # bit11-9: 0, Write recovery for auto-precharge (3 required ??)
101 # bit12: 0, Fast Active power down exit time (0 required)
102 # bit31-13: 0 required
104 DATA 0xFFD01420 0x00000040 # DDR Extended Mode
105 # bit0: 0, DRAM DLL enabled
106 # bit1: 0, DRAM drive strength normal
107 # bit2: 0, ODT control Rtt[0] (Rtt=2, 150 ohm termination)
109 # bit6: 1, ODT control Rtt[1] (Rtt=2, 150 ohm termination)
111 # bit10: 0, differential DQS enabled
113 # bit12: 0, DRAM output buffer enabled
114 # bit31-13: 0 required
116 DATA 0xFFD01424 0x0000F17F # DDR Controller Control High
117 # bit2-0: 0x7 required
118 # bit3: 1, MBUS Burst Chop disabled
119 # bit6-4: 0x7 required
121 # bit8: 1, add writepath sample stage, must be 1 for DDR freq >= 300MHz
122 # bit9: 0, no half clock cycle addition to dataout
123 # bit10: 0, 1/4 clock cycle skew enabled for addr/ctl signals
124 # bit11: 0, 1/4 clock cycle skew disabled for write mesh
125 # bit15-12: 0xf required
126 # bit31-16: 0 required
128 DATA 0xFFD01428 0x00085520 # DDR2 ODT Read Timing
130 # bit7-4: 2, 2 cycles from read command to assertion of M_ODT signal
131 # bit11-8: 5, 5 cycles from read command to de-assertion of M_ODT signal
132 # bit15-12: 5, 5 cycles from read command to assertion of internal ODT signal
133 # bit19-16: 8, 8 cycles from read command to de-assertion of internal ODT signal
134 # bit31-20: 0 required
136 DATA 0xFFD0147C 0x00008552 # DDR2 ODT Write Timing
137 # bit3-0: 2, 2 cycles from write comand to assertion of M_ODT signal
138 # bit7-4: 5, 5 cycles from write command to de-assertion of M_ODT signal
139 # bit15-12: 5, 5 cycles from write command to assertion of internal ODT signal
140 # bit19-16: 8, 8 cycles from write command to de-assertion of internal ODT signal
141 # bit31-16: 0 required
143 DATA 0xFFD01500 0x00000000 # CS[0]n Base address to 0x0
144 DATA 0xFFD01504 0x0FFFFFF1 # CS[0]n Size
145 # bit0: 1, Window enabled
146 # bit1: 0, Write Protect disabled
147 # bit3-2: 0x0, CS0 hit selected
148 # bit23-4: 0xfffff required
149 # bit31-24: 0x0f, Size (i.e. 256MB)
151 DATA 0xFFD01508 0x10000000 # CS[1]n Base address to 256Mb
152 DATA 0xFFD0150C 0x0FFFFFF5 # CS[1]n Size 256Mb Window enabled for CS1
153 # bit0: 1, Window enabled
154 # bit1: 0, Write Protect disabled
155 # bit3-2: 1, CS1 hit selected
156 # bit23-4: 0xfffff required
157 # bit31-24: 0x0f, Size (i.e. 256MB)
159 DATA 0xFFD01514 0x00000000 # CS[2]n Size, window disabled
160 DATA 0xFFD0151C 0x00000000 # CS[3]n Size, window disabled
162 DATA 0xFFD01494 0x00030000 # DDR ODT Control (Low)
163 # bit3-0: 0b0000, (read) M_ODT[0] is not asserted during read from DRAM
164 # bit7-4: 0b0000, (read) M_ODT[1] is not asserted during read from DRAM
165 # bit15-8: 0 required
166 # bit19-16: 0b0011, (write) M_ODT[0] is asserted during write to DRAM CS0 and CS1
167 # bit23-20: 0b0000, (write) M_ODT[1] is not asserted during write to DRAM
168 # bit31-24: 0 required
170 DATA 0xFFD01498 0x00000000 # DDR ODT Control (High)
171 # bit1-0: 0, M_ODT[0] assertion is controlled by ODT Control Low register
172 # bit3-2: 0, M_ODT[1] assertion is controlled by ODT Control Low register
175 DATA 0xFFD0149C 0x0000E803 # CPU ODT Control
176 # bit3-0: 0b0011, internal ODT is asserted during read from DRAM bank 0-1
177 # bit7-4: 0b0000, internal ODT is not asserted during write to DRAM bank 0-4
178 # bit9-8: 0, Internal ODT assertion is controlled by fiels
179 # bit11-10: 2, M_DQ, M_DM, and M_DQS I/O buffer ODT 75 ohm
180 # bit13-12: 2, M_STARTBURST_IN I/O buffer ODT 75 ohm
181 # bit14: 1, M_STARTBURST_IN ODT enabled
182 # bit15: 1, DDR IO ODT Unit: Drive ODT calibration values
183 # bit20-16: 0, Pad N channel driving strength for ODT
184 # bit25-21: 0, Pad P channel driving strength for ODT
185 # bit31-26: 0 required
187 DATA 0xFFD01480 0x00000001 # DDR Initialization Control
188 # bit0: 1, enable DDR init upon this register write
189 # bit31-1: 0, required
191 # End of Header extension