board/d-link/dns325/kwbimage.cfg

# SPDX-License-Identifier: GPL-2.0+
#
# Copyright (C) 2011
# Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
#
# Based on Kirkwood support:
# (C) Copyright 2009
# Marvell Semiconductor <www.marvell.com>
# Written-by: Prafulla Wadaskar <prafulla@marvell.com>
# Refer doc/README.kwbimage for more details about how-to configure
# and create kirkwood boot image
#

# Boot Media configurations
BOOT_FROM	nand
NAND_ECC_MODE	default
NAND_PAGE_SIZE	0x0800

# SOC registers configuration using bootrom header extension
# Maximum KWBIMAGE_MAX_CONFIG configurations allowed

# Configure RGMII-0 interface pad voltage to 1.8V
DATA 0xFFD100e0 0x1b1b1b9b

#Dram initalization for SINGLE x16 CL=5 @ 400MHz
DATA 0xFFD01400 0x43000c30	# DDR Configuration register
# bit13-0:  0xc30, 3120 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

DATA 0xFFD01404 0x39543000	# DDR Controller Control Low
# bit3-0:   0 required
# bit4:     0, addr/cmd in smame 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

DATA 0xFFD01408 0x22125451	# DDR Timing (Low)
# bit3-0:   1, 18 cycle tRAS (tRAS[3-0])
# bit7-4:   5, 6 cycle tRCD
# bit11-8:  4, 5 cyle tRP
# bit15-12: 5, 6 cyle tWR
# bit19-16: 2, 3 cyle tWTR
# bit20:    1, 18 cycle tRAS (tRAS[4])
# bit23-21: 0 required
# bit27-24: 2, 3 cycle tRRD
# bit31-28: 2, 3 cyle tRTP

DATA 0xFFD0140C 0x00000833	#  DDR Timing (High)
# bit6-0:   0x33, 33 cycle tRFC
# bit8-7:   0, 1 cycle tR2R
# bit10-9:  0, 1 cyle tR2W
# bit12-11: 1, 2 cylce tW2W
# bit31-13: 0 required

DATA 0xFFD01410 0x0000000c	#  DDR Address Control
# bit1-0:   0, Cs0width=x8
# bit3-2:   3, Cs0size=1Gb
# 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

DATA 0xFFD01414 0x00000000	#  DDR Open Pages Control
# bit0:    0, OPEn=OpenPage enabled
# bit31-1: 0 required

DATA 0xFFD01418 0x00000000	#  DDR Operation
# bit3-0:   0, Cmd=Normal SDRAM Mode
# bit31-4:  0 required

DATA 0xFFD0141C 0x00000C52	#  DDR Mode
# 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:  0, Write recovery for auto-precharge (3 required ??)
# bit12:    0, Fast Active power down exit time (0 required)
# bit31-13: 0 required

DATA 0xFFD01420 0x00000040	#  DDR Extended Mode
# bit0:     0, DRAM DLL enabled
# bit1:     0, DRAM drive strength normal
# 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

DATA 0xFFD01424 0x0000F17F	#  DDR Controller Control High
# 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

DATA 0xFFD01428 0x00085520	# DDR2 ODT Read Timing
# 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

DATA 0xFFD0147C 0x00008552	# DDR2 ODT Write Timing
# 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

DATA 0xFFD01500 0x00000000	# CS[0]n Base address to 0x0
DATA 0xFFD01504 0x0FFFFFF1	# CS[0]n Size
# bit0:     1, Window enabled
# bit1:     0, Write Protect disabled
# bit3-2:   0x0, CS0 hit selected
# bit23-4:  0xfffff required
# bit31-24: 0x0f, Size (i.e. 256MB)

DATA 0xFFD01508 0x10000000	# CS[1]n Base address to 256Mb
DATA 0xFFD0150C 0x0FFFFFF5	# CS[1]n Size 256Mb Window enabled for CS1
# bit0:     1, Window enabled
# bit1:     0, Write Protect disabled
# bit3-2:   1, CS1 hit selected
# bit23-4:  0xfffff required
# bit31-24: 0x0f, Size (i.e. 256MB)

DATA 0xFFD01514 0x00000000	# CS[2]n Size, window disabled
DATA 0xFFD0151C 0x00000000	# CS[3]n Size, window disabled

DATA 0xFFD01494 0x00030000	#  DDR ODT Control (Low)
# 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: 0b0011, (write) M_ODT[0] is asserted during write to DRAM CS0 and CS1
# bit23-20: 0b0000, (write) M_ODT[1] is not asserted during write to DRAM
# bit31-24: 0 required

DATA 0xFFD01498 0x00000000	#  DDR ODT Control (High)
# 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

DATA 0xFFD0149C 0x0000E803	# CPU ODT Control
# bit3-0:   0b0011, internal ODT is asserted during read from DRAM bank 0-1
# bit7-4:   0b0000, internal ODT is not asserted during write to DRAM bank 0-4
# 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

DATA 0xFFD01480 0x00000001	# DDR Initialization Control
# bit0:     1, enable DDR init upon this register write
# bit31-1:  0, required

# End of Header extension
DATA 0x0 0x0