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README.m52277evb
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Freescale MCF52277EVB ColdFire Development Board
================================================
TsiChung Liew(Tsi-Chung.Liew@freescale.com)
Created Jan 8, 2008
===========================================
Changed files:
==============
- board/freescale/m52277evb/m52277evb.c Dram setup
- board/freescale/m52277evb/Makefile Makefile
- board/freescale/m52277evb/config.mk config make
- board/freescale/m52277evb/u-boot.lds Linker description
- cpu/mcf5227x/cpu.c cpu specific code
- cpu/mcf5227x/cpu_init.c FBCS, Mux pins, icache and RTC extra regs
- cpu/mcf5227x/interrupts.c cpu specific interrupt support
- cpu/mcf5227x/speed.c system, flexbus, and cpu clock
- cpu/mcf5227x/Makefile Makefile
- cpu/mcf5227x/config.mk config make
- cpu/mcf5227x/start.S start up assembly code
- doc/README.m52277evb This readme file
- drivers/serial/mcfuart.c ColdFire common UART driver
- drivers/rtc/mcfrtc.c Realtime clock Driver
- include/asm-m68k/bitops.h Bit operation function export
- include/asm-m68k/byteorder.h Byte order functions
- include/asm-m68k/crossbar.h CrossBar structure and definition
- include/asm-m68k/dspi.h DSPI structure and definition
- include/asm-m68k/edma.h eDMA structure and definition
- include/asm-m68k/flexbus.h FlexBus structure and definition
- include/asm-m68k/fsl_i2c.h I2C structure and definition
- include/asm-m68k/global_data.h Global data structure
- include/asm-m68k/immap.h ColdFire specific header file and driver macros
- include/asm-m68k/immap_5227x.h mcf5227x specific header file
- include/asm-m68k/io.h io functions
- include/asm-m68k/lcd.h LCD structure and definition
- include/asm-m68k/m5227x.h mcf5227x specific header file
- include/asm-m68k/posix_types.h Posix
- include/asm-m68k/processor.h header file
- include/asm-m68k/ptrace.h Exception structure
- include/asm-m68k/rtc.h Realtime clock header file
- include/asm-m68k/ssi.h SSI structure and definition
- include/asm-m68k/string.h String function export
- include/asm-m68k/timer.h Timer structure and definition
- include/asm-m68k/types.h Data types definition
- include/asm-m68k/uart.h Uart structure and definition
- include/asm-m68k/u-boot.h u-boot structure
- include/configs/M52277EVB.h Board specific configuration file
- lib_m68k/board.c board init function
- lib_m68k/cache.c
- lib_m68k/interrupts Coldfire common interrupt functions
- lib_m68k/m68k_linux.c
- lib_m68k/time.c Timer functions (Dma timer and PIT)
- lib_m68k/traps.c Exception init code
1 MCF52277 specific Options/Settings
====================================
1.1 pre-loader is no longer suppoer in this coldfire family
1.2 Configuration settings for M52277EVB Development Board
CONFIG_MCF5227x -- define for all MCF5227x CPUs
CONFIG_M52277 -- define for all Freescale MCF52277 CPUs
CONFIG_M52277EVB -- define for M52277EVB 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_MCFRTC -- define to use common CF RTC driver
CONFIG_SYS_MCFRTC_BASE -- provide base address for RTC in immap.h
CONFIG_SYS_RTC_OSCILLATOR -- define RTC clock frequency
RTC_DEBUG -- define to show RTC debug message
CONFIG_CMD_DATE -- enable to use date feature in u-boot
CONFIG_MCFTMR -- define to use DMA timer
CONFIG_MCFPIT -- define to use PIT timer
CONFIG_FSL_I2C -- define to use FSL common I2C driver
CONFIG_HARD_I2C -- define for I2C hardware support
CONFIG_SOFT_I2C -- define for I2C bit-banged
CONFIG_SYS_I2C_SPEED -- define for I2C speed
CONFIG_SYS_I2C_SLAVE -- define for I2C slave address
CONFIG_SYS_I2C_OFFSET -- define for I2C base address offset
CONFIG_SYS_IMMR -- define for MBAR offset
CONFIG_SYS_MBAR -- define MBAR offset
CONFIG_MONITOR_IS_IN_RAM -- Not support
CONFIG_SYS_INIT_RAM_ADDR -- defines the base address of the MCF52277 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
CONFIG_LCD and CONFIG_CMD_USB are not supported in this current u-boot,
update will be provided at later time
2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
===========================================
2.1. System memory map:
Flash: 0x00000000-0x3FFFFFFF (1024MB)
DDR: 0x40000000-0x7FFFFFFF (1024MB)
SRAM: 0x80000000-0x8FFFFFFF (256MB)
IP: 0xF0000000-0xFFFFFFFF (256MB)
2.2. For the initial bringup, we adopted a consistent memory scheme between u-boot and
linux kernel, you can customize it based on your system requirements:
Flash0: 0x00000000-0x00FFFFFF (16MB)
DDR: 0x40000000-0x4FFFFFFF (64MB)
SRAM: 0x80000000-0x80007FFF (32KB)
IP: 0xFC000000-0xFC0FFFFF (64KB)
3. COMPILATION
==============
3.1 To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
uClinux 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-1.x.x
make distclean
make M52277EVB_config
make
4. SCREEN DUMP
==============
4.1 M52277EVB Development board
(NOTE: May not show exactly the same)
U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
CPU: Freescale MCF52277 (Mask:6c Version:0)
CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
INP CLK 16 Mhz VCO CLK 480 Mhz
Board: Freescale 52277 EVB
I2C: ready
DRAM: 64 MB
FLASH: 16 MB
In: serial
Out: serial
Err: serial
-> print
baudrate=115200
hostname=M52277EVB
inpclk=16000000
loadaddr=(0x40000000 + 0x10000)
load=tftp ${loadaddr) ${u-boot}
upd=run load; run prog
prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
u-boot=u-boot.bin
stdin=serial
stdout=serial
stderr=serial
mem=65024k
Environment size: 280/32764 bytes
-> bdinfo
memstart = 0x40000000
memsize = 0x04000000
flashstart = 0x00000000
flashsize = 0x01000000
flashoffset = 0x00000000
sramstart = 0x80000000
sramsize = 0x00008000
mbar = 0xFC000000
busfreq = 80 MHz
flbfreq = 80 Mhz
inpfreq = 16 Mhz
vcofreq = 480 Mhz
baudrate = 115200 bps
->
-> help
? - alias for 'help'
autoscr - run script from memory
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
date - get/set/reset date & time
dcache - enable or disable data cache
echo - echo args to console
erase - erase FLASH memory
flinfo - print FLASH memory information
go - start application at address 'addr'
help - print online help
icache - enable or disable instruction cache
icrc32 - checksum calculation
iloop - infinite loop on address range
imd - i2c memory display
iminfo - print header information for application image
imls - list all images found in flash
imm - i2c memory modify (auto-incrementing)
imw - memory write (fill)
inm - memory modify (constant address)
iprobe - probe to discover valid I2C chip addresses
itest - return true/false on integer compare
loadb - load binary file over serial line (kermit mode)
loads - load S-Record file over serial line
loady - load binary file over serial line (ymodem mode)
loop - infinite loop on address range
ls - list files in a directory (default /)
md - memory display
mm - memory modify (auto-incrementing)
mtest - simple RAM test
mw - memory write (fill)
nm - memory modify (constant address)
ping - send ICMP ECHO_REQUEST to network host
printenv- print environment variables
protect - enable or disable FLASH write protection
reset - Perform RESET of the CPU
run - run commands in an environment variable
saveenv - save environment variables to persistent storage
setenv - set environment variables
sleep - delay execution for some time
version - print monitor version
->