upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/keymile/km_arm/kwbimage_128M16_1.cfg

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#
# (C) Copyright 2010
# Heiko Schocher, DENX Software Engineering, hs@denx.de.
#
# (C) Copyright 2012
# Valentin Longchamp, Keymile AG, valentin.longchamp@keymile.com
# Stefan Bigler, Keymile AG, stefan.bigler@keymile.com
#
# (C) Copyright 2012
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301 USA
#
# Refer docs/README.kwimage for more details about how-to configure
# and create kirkwood boot image
#
# 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_SI (1=NF_IO[3])
# bit 12-8: 2, MPPSel2 SPI_SCK (1=NF_IO[4])
# bit 15-12: 2, MPPSel3 SPI_SO (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]
# bit 7-4: 0, MPPSel9 GPIO[9]
# 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 UA1_TXD
# bit 27-24: 3, MPPSel14 UA1_RXD
# bit 31-28: 0, MPPSel15 GPIO[15]
DATA 0xFFD10008 0x00001100 # MPP Control 2 Register
# bit 3-0: 0, MPPSel16 GPIO[16]
# bit 7-4: 0, MPPSel17 not connected
# bit 12-8: 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, Reserve
# 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: ???, Reserve
# bit 17-16: 2, ECC RAM RTC RAM0
# bit 19-18: 1, ECC RAM WTC RAM0
# bit 31-20: ???,Reserve
# 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, for freqs 200-399MHz, unbuffered DIMM
# bit 30-28: 3, required
# bit 31: 0,no additional STARTBURST delay
DATA 0xFFD01408 0x2302444e # DDR Timing (Low) (active cycles value +1)
# bit 3-0: 0xE, TRAS, 15 clk (45 ns)
# bit 7-4: 0x4, TRCD, 5 clk (15 ns)
# bit 11-8: 0x4, TRP, 5 clk (15 ns)
# bit 15-12: 0x4, TWR, 5 clk (15 ns)
# bit 19-16: 0x2, TWTR, 3 clk (7.5 ns)
# bit 20: 0, extended TRAS msb
# bit 23-21: 0, reserved
# bit 27-24: 0x3, TRRD, 4 clk (10 ns)
# bit 31-28: 0x2, TRTP, 3 clk (7.5 ns)
DATA 0xFFD0140C 0x0000003e # DDR Timing (High)
# bit 6-0: 0x3E, TRFC, 63 clk (195 ns)
# bit 8-7: 0, TR2R
# bit 10-9: 0, TR2W
# bit 12-11: 0, TW2W
# bit 31-13: 0, reserved
DATA 0xFFD01410 0x00000001 # DDR Address Control
# bit 1-0: 1, Cs0width=x16
# 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 strength reduced
# bit 2: 1, DDR ODT control lsb, 75 ohm termination [RTT0]
# bit 5-3: 0, required
# bit 6: 0, DDR ODT control msb, 75 ohm 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 f > 266 MHz
# 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 0x0FFFFFF1 # 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: 0x0F, Size (i.e. 256MB)
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 0x00000000 # DDR ODT Control (High)
# bit 1-0: 0, ODT0 controlled by ODT Control (low) register above
# bit 3-2: 0, ODT1 controlled by register
# bit 31-4: 0, required
DATA 0xFFD0149C 0x0000E801 # CPU ODT Control
# bit 3-0: 1, ODTRd, Internal ODT asserted during read from DRAM bank0
# bit 7-4: 0, ODTWr, Internal ODT not asserted during write to DRAM
# bit 9-8: 0, ODTEn, controlled by ODTRd and ODTWr
# 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