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# SPDX-License-Identifier: GPL-2.0+
#
# Copyright (c) 2012 Michael Walle
# Michael Walle <michael@walle.cc>
# Refer doc/README.kwbimage 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
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