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
- board/freescale/m54418twr/sbf_dram_init.S
                                        DDR/SDRAM initialization

- 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_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