board/keymile/km_arm/kwbimage_256M8_1.cfg

# SPDX-License-Identifier: GPL-2.0+
#
# (C) Copyright 2012
# Stefan Bigler, Keymile AG, stefan.bigler@keymile.com
# Norbert Mayer, Keymile AG, norbert.mayer@keymile.com
# Deepak Patel, XENTECH Limited, deepak.patel@xentech.co.uk
# Refer doc/README.kwbimage for more details about how-to configure
# and create kirkwood boot image
#
# This configuration applies to COGE5 design (ARM-part)
# Two 8-Bit devices are connected on the 16-Bit bus on the same
# chip-select. The supported devices are
#   MT47H256M8EB-3IT:C
#   MT47H256M8EB-25EIT:C

# Boot Media configurations
BOOT_FROM	spi	# Boot from SPI flash

DATA 0xFFD10000 0x01112222	# MPP Control 0 Register
# bit 3-0:   2, MPPSel0  SPI_CSn  (1=NF_IO[2])
# bit 7-4:   2, MPPSel1  SPI_MOSI (1=NF_IO[3])
# bit 12-8:  2, MPPSel2  SPI_SCK  (1=NF_IO[4])
# bit 15-12: 2, MPPSel3  SPI_MISO (1=NF_IO[5])
# bit 19-16: 1, MPPSel4  NF_IO[6]
# bit 23-20: 1, MPPSel5  NF_IO[7]
# bit 27-24: 1, MPPSel6  SYSRST_O
# bit 31-28: 0, MPPSel7  GPO[7]

DATA 0xFFD10004 0x03303300	# MPP Control 1 Register
# bit 3-0:   0, MPPSel8	 GPIO[8] CPU_SDA bitbanged
# bit 7-4:   0, MPPSel9  GPIO[9] CPU_SCL bitbanged
# bit 12-8:  3, MPPSel10 UA0_TXD
# bit 15-12: 3, MPPSel11 UA0_RXD
# bit 19-16: 0, MPPSel12 not connected
# bit 23-20: 3, MPPSel13 GPIO[14]
# bit 27-24: 3, MPPSel14 GPIO[15]
# bit 31-28: 0, MPPSel15 GPIO[16] BOOT_FL_SEL (SPI-MUX Signal)

DATA 0xFFD10008 0x00001100	# MPP Control 2 Register
# bit 3-0:   0, MPPSel16 GPIO[16]
# bit 7-4:   0, MPPSel17 not connected
# bit 11-8:  1, MPPSel18 NF_IO[0]
# bit 15-12: 1, MPPSel19 NF_IO[1]
# bit 19-16: 0, MPPSel20 GPIO[20]
# bit 23-20: 0, MPPSel21 GPIO[21]
# bit 27-24: 0, MPPSel22 GPIO[22]
# bit 31-28: 0, MPPSel23 GPIO[23]

# MPP Control 3-6 Register untouched (MPP24-49)

DATA 0xFFD100E0 0x1B1B1B1B	# IO Configuration 0 Register
# bit 2-0:   3, Reserved
# bit 5-3:   3, Reserved
# bit 6:     0, Reserved
# bit 7:     0, RGMII-pads voltage = 3.3V
# bit 10-8:  3, Reserved
# bit 13-11: 3, Reserved
# bit 14:    0, Reserved
# bit 15:    0, MPP RGMII-pads voltage = 3.3V
# bit 31-16  0x1B1B, Reserved

DATA 0xFFD20134 0x66666666	# L2 RAM Timing 0 Register
# bit 0-1:   2, Tag RAM RTC RAM0
# bit 3-2:   1, Tag RAM WTC RAM0
# bit 7-4:   6, Reserved
# bit 9-8:   2, Valid RAM RTC RAM
# bit 11-10: 1, Valid RAM WTC RAM
# bit 13-12: 2, Dirty RAM RTC RAM
# bit 15-14: 1, Dirty RAM WTC RAM
# bit 17-16: 2, Data RAM RTC RAM0
# bit 19-18: 1, Data RAM WTC RAM0
# bit 21-20: 2, Data RAM RTC RAM1
# bit 23-22: 1, Data RAM WTC RAM1
# bit 25-24: 2, Data RAM RTC RAM2
# bit 27-26: 1, Data RAM WTC RAM2
# bit 29-28: 2, Data RAM RTC RAM3
# bit 31-30: 1, Data RAM WTC RAM4

DATA 0xFFD20138 0x66666666	# L2 RAM Timing 1 Register
# bit 15-0:  ?, Reserved
# bit 17-16: 2, ECC RAM RTC RAM0
# bit 19-18: 1, ECC RAM WTC RAM0
# bit 31-20: ?,Reserved

# NOTE: Don't write on 0x20148 , 0x2014c and 0x20154, leave them untouched!
# If not it could cause KW Exceptions during boot in Fast Corners/High Voltage

# SDRAM initalization
DATA 0xFFD01400 0x430004E0	# SDRAM Configuration Register
# bit 13-0:  0x4E0, DDR2 clks refresh rate
# bit 14:    0, reserved
# bit 15:    0, reserved
# bit 16:    0, CPU to Dram Write buffer policy
# bit 17:    0, Enable Registered DIMM or Equivalent Sampling Logic
# bit 19-18: 0, reserved
# bit 23-20: 0, reserved
# bit 24:    1, enable exit self refresh mode on DDR access
# bit 25:    1, required
# bit 29-26: 0, reserved
# bit 31-30: 1, reserved

DATA 0xFFD01404 0x36543000	# DDR Controller Control Low
# bit 3-0:   0, reserved
# bit 4:     0, 2T mode =addr/cmd in same cycle
# bit 5:     0, clk is driven during self refresh, we don't care for APX
# bit 6:     0, use recommended falling edge of clk for addr/cmd
# bit 7-11:  0, reserved
# bit 12-13: 1, reserved, required 1
# bit 14:    0, input buffer always powered up
# bit 17-15: 0, reserved
# bit 18:    1, cpu lock transaction enabled
# bit 19:    0, reserved
# bit 23-20: 5, recommended value for CL=4 and STARTBURST_DEL disabled bit31=0
# bit 27-24: 6, CL+1, STARTBURST sample stages, freq 200-399MHz, unbuffer DIMM
# bit 30-28: 3, required
# bit 31:    0, no additional STARTBURST delay

DATA 0xFFD01408 0x2202444E	# DDR Timing (Low) (active cycles value +1)
# bit 3-0:   0xe, TRAS = 45ns -> 15 clk cycles
# bit 7-4:   0x4, TRCD = 15ns -> 5 clk cycles
# bit 11-8:  0x4, TRP = 15ns -> 5 clk cycles
# bit 15-12: 0x4, TWR = 15ns -> 5 clk cycles
# bit 19-16: 0x2, TWTR = 7,5ns -> 3 clk cycles
# bit 20:      0, extended TRAS msb
# bit 23-21:   0, reserved
# bit 27-24: 0x2, TRRD = 7,5ns -> 3 clk cycles
# bit 31-28: 0x2, TRTP = 7,5ns -> 3 clk cycles

DATA 0xFFD0140C 0x0000003E	#  DDR Timing (High)
# bit 6-0:   0x3E, TRFC = 195ns -> 63 clk cycles
# bit 8-7:      0, TR2R
# bit 10-9:     0, TR2W
# bit 12-11:    0, TW2W
# bit 31-13:    0, reserved

DATA 0xFFD01410 0x00000000	#  DDR Address Control
# bit 1-0:    0, Cs0width=x8 (2 devices)
# bit 3-2:    0, Cs0size=2Gb
# bit 5-4:    0, Cs1width=nonexistent
# bit 7-6:    0, Cs1size =nonexistent
# bit 9-8:    0, Cs2width=nonexistent
# bit 11-10:  0, Cs2size =nonexistent
# bit 13-12:  0, Cs3width=nonexistent
# bit 15-14:  0, Cs3size =nonexistent
# bit 16:     0, Cs0AddrSel
# bit 17:     0, Cs1AddrSel
# bit 18:     0, Cs2AddrSel
# bit 19:     0, Cs3AddrSel
# bit 31-20:  0, required

DATA 0xFFD01414 0x00000000	#  DDR Open Pages Control
# bit 0:      0,  OpenPage enabled
# bit 31-1:   0, required

DATA 0xFFD01418 0x00000000	#  DDR Operation
# bit 3-0:    0, DDR cmd
# bit 31-4:   0, required

DATA 0xFFD0141C 0x00000652	#  DDR Mode
# bit 2-0:    2, Burst Length = 4
# bit 3:      0, Burst Type
# bit 6-4:    5, CAS Latency = 5
# bit 7:      0, Test mode
# bit 8:      0, DLL Reset
# bit 11-9:   3, Write recovery for auto-precharge must be 3
# bit 12:     0, Active power down exit time, fast exit
# bit 14-13:  0, reserved
# bit 31-15:  0, reserved

DATA 0xFFD01420 0x00000006	#  DDR Extended Mode
# bit 0:      0, DDR DLL enabled
# bit 1:      1, DDR drive strenght reduced
# bit 2:      1, DDR ODT control lsb, 75ohm termination [RTT0]
# bit 5-3:    0, required
# bit 6:      0, DDR ODT control msb, 75ohm termination [RTT1]
# bit 9-7:    0, required
# bit 10:     0, differential DQS enabled
# bit 11:     0, required
# bit 12:     0, DDR output buffer enabled
# bit 31-13:  0 required

DATA 0xFFD01424 0x0000F17F	#  DDR Controller Control High
# bit 2-0:    7, required
# bit 3:      1, MBUS Burst Chop disabled
# bit 6-4:    7, required
# bit 7:      0, reserved
# bit 8:      1, add sample stage required for > 266Mhz
# bit 9:      0, no half clock cycle addition to dataout
# bit 10:     0, 1/4 clock cycle skew enabled for addr/ctl signals
# bit 11:     0, 1/4 clock cycle skew disabled for write mesh
# bit 15-12:0xf, required
# bit 31-16:  0, required

DATA 0xFFD01428 0x00084520	# DDR2 SDRAM Timing Low
# bit 3-0:    0, required
# bit 7-4:    2, M_ODT assertion 2 cycles after read start command
# bit 11-8:   5, M_ODT de-assertion 5 cycles after read start command
#                (ODT turn off delay 2,5 clk cycles)
# bit 15-12:  4, internal ODT time based on bit 7-4
#                with the considered SDRAM internal delay
# bit 19-16:  8, internal ODT de-assertion based on bit 11-8
#                with the considered SDRAM internal delay
# bit 31-20:  0, required

DATA 0xFFD0147c 0x00008452	# DDR2 SDRAM Timing High
# bit 3-0:    2, M_ODT assertion same as bit 11-8
# bit 7-4:    5, M_ODT de-assertion same as bit 15-12
# bit 11-8:   4, internal ODT assertion 2 cycles after write start command
#                with the considered SDRAM internal delay
# bit 15-12:  8, internal ODT de-assertion 5 cycles after write start command
#                with the considered SDRAM internal delay

DATA 0xFFD01500 0x00000000	# CS[0]n Base address to 0x0
# bit 23-0:   0, reserved
# bit 31-24:  0, CPU CS Window0 Base Address, addr bits [31:24]

DATA 0xFFD01504 0x1FFFFFF1	# CS[0]n Size
# bit 0:      1, Window enabled
# bit 1:      0, Write Protect disabled
# bit 3-2:    0, CS0 hit selected
# bit 23-4:ones, required
# bit 31-24:0x1F, Size (i.e. 512MB)

DATA 0xFFD0150C 0x00000000	# CS[1]n Size, window disabled
DATA 0xFFD01514 0x00000000	# CS[2]n Size, window disabled
DATA 0xFFD0151C 0x00000000	# CS[3]n Size, window disabled

DATA 0xFFD01494 0x00010000	#  DDR ODT Control (Low)
# bit 3-0:     0, ODT0Rd, MODT[0] not asserted during read from DRAM CS0
# bit 7-4:     0, ODT0Rd, MODT[1] not asserted
# bit 11-8:    0, required
# big 15-11:   0, required
# bit 19-16:   1, ODT0Wr, MODT[0] asserted during write to DRAM CS0
# bit 23-20:   0, ODT0Wr, MODT[1] not asserted
# bit 27-24:   0, required
# bit 31-28:   0, required

DATA 0xFFD01498 0x00000004	#  DDR ODT Control (High)
# bit 1-0:     0, ODT0 controlled by ODT Control (low) register above
# bit 3-2:     1, ODT1 never active
# bit 31-4:    0, required

DATA 0xFFD0149C 0x0000E801	# CPU ODT Control
# bit 3-0:     1, ODT0Rd, Internal ODT asserted during read from DRAM bank0
# bit 7-4:     0, ODT0Wr, Internal ODT not asserted during write to DRAM bank0
# bit 9-8:     0, ODTEn, controlled by ODT0Rd and ODT0Wr
# bit 11-10:   2, DQ_ODTSel. ODT select turned on, 75 ohm
# bit 13-12:   2, STARTBURST ODT buffer selected, 75 ohm
# bit 14:      1, STARTBURST ODT enabled
# bit 15:      1, Use ODT Block

DATA 0xFFD01480 0x00000001	# DDR Initialization Control
# bit 0:       1, enable DDR init upon this register write
# bit 31-1:    0, reserved

# End of Header extension
DATA 0x0 0x0