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+Freescale MCF54418TWR ColdFire Development Board
+================================================
+
+TsiChung Liew(Tsi-Chung.Liew@freescale.com)
+Created Mar 22, 2012
+===========================================
+
+
+Changed files:
+==============
+
+- board/freescale/m54418twr/m54418twr.c Dram setup
+- board/freescale/m54418twr/Makefile Makefile
+- board/freescale/m54418twr/config.mk config make
+- board/freescale/m54418twr/u-boot.lds Linker description
+
+- arch/m68k/cpu/mcf5445x/cpu.c cpu specific code
+- arch/m68k/cpu/mcf5445x/cpu_init.c Flexbus ChipSelect, Mux pins setup, icache and RTC extra regs
+- arch/m68k/cpu/mcf5445x/interrupts.c cpu specific interrupt support
+- arch/m68k/cpu/mcf5445x/speed.c system, pci, flexbus, and cpu clock
+- arch/m68k/cpu/mcf5445x/Makefile Makefile
+- arch/m68k/cpu/mcf5445x/config.mk config make
+- arch/m68k/cpu/mcf5445x/start.S start up assembly code
+
+- doc/README.m54418twr This readme file
+
+- drivers/net/mcffec.c ColdFire common FEC driver
+- drivers/net/mcfmii.c ColdFire common MII driver
+- drivers/serial/mcfuart.c ColdFire common UART driver
+
+- arch/m68k/include/asm/bitops.h Bit operation function export
+- arch/m68k/include/asm/byteorder.h Byte order functions
+- arch/m68k/include/asm/fec.h FEC structure and definition
+- arch/m68k/include/asm/global_data.h Global data structure
+- arch/m68k/include/asm/immap.h ColdFire specific header file and driver macros
+- arch/m68k/include/asm/immap_5441x.h mcf5441x specific header file
+- arch/m68k/include/asm/io.h io functions
+- arch/m68k/include/asm/m5441x.h mcf5441x specific header file
+- arch/m68k/include/asm/posix_types.h Posix
+- arch/m68k/include/asm/processor.h header file
+- arch/m68k/include/asm/ptrace.h Exception structure
+- arch/m68k/include/asm/rtc.h Realtime clock header file
+- arch/m68k/include/asm/string.h String function export
+- arch/m68k/include/asm/timer.h Timer structure and definition
+- arch/m68k/include/asm/types.h Data types definition
+- arch/m68k/include/asm/uart.h Uart structure and definition
+- arch/m68k/include/asm/u-boot.h u-boot structure
+
+- include/configs/M54418TWR.h Board specific configuration file
+
+- arch/m68k/lib/board.c board init function
+- arch/m68k/lib/cache.c
+- arch/m68k/lib/interrupts.c Coldfire common interrupt functions
+- arch/m68k/lib/time.c Timer functions (Dma timer and PIT)
+- arch/m68k/lib/traps.c Exception init code
+
+1 MCF5441x specific Options/Settings
+====================================
+1.1 pre-loader is no longer suppoer in thie coldfire family
+
+1.2 Configuration settings for M54418TWR Development Board
+CONFIG_MCF5441x -- define for all MCF5441x CPUs
+CONFIG_M54418 -- define for all Freescale MCF54418 CPUs
+CONFIG_M54418TWR -- define for M54418TWR board
+
+CONFIG_MCFUART -- define to use common CF Uart driver
+CONFIG_SYS_UART_PORT -- define UART port number, start with 0, 1 and 2
+CONFIG_BAUDRATE -- define UART baudrate
+
+CONFIG_MCFFEC -- define to use common CF FEC driver
+CONFIG_MII -- enable to use MII driver
+CONFIG_SYS_DISCOVER_PHY -- enable PHY discovery
+CONFIG_SYS_RX_ETH_BUFFER -- Set FEC Receive buffer
+CONFIG_SYS_FAULT_ECHO_LINK_DOWN --
+CONFIG_SYS_FEC0_PINMUX -- Set FEC0 Pin configuration
+CONFIG_SYS_FEC1_PINMUX -- Set FEC1 Pin configuration
+CONFIG_SYS_FEC0_MIIBASE -- Set FEC0 MII base register
+CONFIG_SYS_FEC1_MIIBASE -- Set FEC0 MII base register
+MCFFEC_TOUT_LOOP -- set FEC timeout loop
+CONFIG_HAS_ETH1 -- define to enable second FEC in u-boot
+
+CONFIG_MCFTMR -- define to use DMA timer
+
+CONFIG_SYS_IMMR -- define for MBAR offset
+
+CONFIG_EXTRA_CLOCK -- Enable extra clock such as vco, flexbus, pci, etc
+
+CONFIG_SYS_MBAR -- define MBAR offset
+
+CONFIG_MONITOR_IS_IN_RAM -- Not support
+
+CONFIG_SYS_INIT_RAM_ADDR -- defines the base address of the MCF54455 internal SRAM
+
+CONFIG_SYS_CSn_BASE -- defines the Chip Select Base register
+CONFIG_SYS_CSn_MASK -- defines the Chip Select Mask register
+CONFIG_SYS_CSn_CTRL -- defines the Chip Select Control register
+
+CONFIG_SYS_SDRAM_BASE -- defines the DRAM Base
+
+2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
+===========================================
+2.1. System memory map:
+ MRAM: 0x00000000-0x0003FFFF (256KB)
+ DDR: 0x40000000-0x47FFFFFF (128MB)
+ SRAM: 0x80000000-0x8000FFFF (64KB)
+ IP: 0xE0000000-0xFFFFFFFF (512MB)
+
+3. COMPILATION
+==============
+3.1 To create U-Boot the gcc-4.x compiler set (ColdFire ELF version)
+from codesourcery.com was used. Download it from:
+http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
+
+3.2 Compilation
+ export CROSS_COMPILE=cross-compile-prefix
+ cd u-boot
+ make distclean
+ make M54418TWR_config, or - default to spi serial flash boot, 50Mhz input clock
+ make M54418TWR_nand_mii_config, or - default to nand flash boot, mii mode, 25Mhz input clock
+ make M54418TWR_nand_rmii_config, or - default to nand flash boot, rmii mode, 50Mhz input clock
+ make M54418TWR_nand_rmii_lowfreq_config, or - default to nand flash boot, rmii mode, 50Mhz input clock
+ make M54418TWR_serial_mii_config, or - default to spi serial flash boot, 25Mhz input clock
+ make M54418TWR_serial_rmii_config, or - default to spi serial flash boot, 50Mhz input clock
+ make
+
+4. SCREEN DUMP
+==============
+4.1 M54418TWR Development board
+ Boot from NAND flash (NOTE: May not show exactly the same)
+
+U-Boot 2012.10-00209-g12ae1d8-dirty (Oct 18 2012 - 15:54:54)
+
+CPU: Freescale MCF54418 (Mask:a3 Version:1)
+ CPU CLK 250 MHz BUS CLK 125 MHz FLB CLK 125 MHz
+ INP CLK 50 MHz VCO CLK 500 MHz
+Board: Freescale MCF54418 Tower System
+SPI: ready
+DRAM: 128 MiB
+NAND: 256 MiB
+In: serial
+Out: serial
+Err: serial
+Net: FEC0, FEC1
+-> pri
+baudrate=115200
+bootargs=root=/dev/mtdblock2 rw rootfstype=jffs2 mtdparts=NAND:1M(u-boot)ro,7M(k
+ernel)ro,-(jffs2) console=ttyS0,115200
+bootdelay=2
+eth1addr=00:e0:0c:bc:e5:61
+ethact=FEC0
+ethaddr=00:e0:0c:bc:e5:60
+fileaddr=40010000
+filesize=27354
+gatewayip=192.168.1.1
+hostname=M54418TWR
+inpclk=50000000
+ipaddr=192.168.1.2
+load=tftp ${loadaddr} ${u-boot};
+loadaddr=0x40010000
+mem=129024k
+netdev=eth0
+netmask=255.255.255.0
+prog=nand device 0;nand erase 0 40000;nb_update ${loadaddr} ${filesize};save
+serverip=192.168.1.1
+stderr=serial
+stdin=serial
+stdout=serial
+u-boot=u-boot.bin
+upd=run load; run prog
+
+Environment size: 653/131068 bytes
+-> bdinfo
+memstart = 0x40000000
+memsize = 0x08000000
+flashstart = 0x00000000
+flashsize = 0x00000000
+flashoffset = 0x00000000
+sramstart = 0x80000000
+sramsize = 0x00010000
+mbar = 0xFC000000
+cpufreq = 250 MHz
+busfreq = 125 MHz
+flbfreq = 125 MHz
+inpfreq = 50 MHz
+vcofreq = 500 MHz
+ethaddr = 00:e0:0c:bc:e5:60
+eth1addr = 00:e0:0c:bc:e5:61
+ip_addr = 192.168.1.2
+baudrate = 115200 bps
+-> help
+? - alias for 'help'
+base - print or set address offset
+bdinfo - print Board Info structure
+boot - boot default, i.e., run 'bootcmd'
+bootd - boot default, i.e., run 'bootcmd'
+bootelf - Boot from an ELF image in memory
+bootm - boot application image from memory
+bootp - boot image via network using BOOTP/TFTP protocol
+bootvx - Boot vxWorks from an ELF image
+cmp - memory compare
+coninfo - print console devices and information
+cp - memory copy
+crc32 - checksum calculation
+dcache - enable or disable data cache
+dhcp - boot image via network using DHCP/TFTP protocol
+echo - echo args to console
+editenv - edit environment variable
+env - environment handling commands
+exit - exit script
+false - do nothing, unsuccessfully
+go - start application at address 'addr'
+help - print command description/usage
+icache - enable or disable instruction cache
+iminfo - print header information for application image
+imxtract- extract a part of a multi-image
+itest - return true/false on integer compare
+loop - infinite loop on address range
+md - memory display
+mdio - MDIO utility commands
+mii - MII utility commands
+mm - memory modify (auto-incrementing address)
+mtest - simple RAM read/write test
+mw - memory write (fill)
+nand - NAND sub-system
+nb_update- Nand boot update program
+nboot - boot from NAND device
+nfs - boot image via network using NFS protocol
+nm - memory modify (constant address)
+ping - send ICMP ECHO_REQUEST to network host
+printenv- print environment variables
+reginfo - print register information
+reset - Perform RESET of the CPU
+run - run commands in an environment variable
+saveenv - save environment variables to persistent storage
+setenv - set environment variables
+sf - SPI flash sub-system
+showvar - print local hushshell variables
+sleep - delay execution for some time
+source - run script from memory
+sspi - SPI utility command
+test - minimal test like /bin/sh
+tftpboot- boot image via network using TFTP protocol
+true - do nothing, successfully
+version - print monitor, compiler and linker version
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