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README

      1 Freescale MCF52277EVB ColdFire Development Board
      2 ================================================
      3 
      4 TsiChung Liew(Tsi-Chung.Liew (a] freescale.com)
      5 Created Jan 8, 2008
      6 ===========================================
      7 
      8 
      9 Changed files:
     10 ==============
     11 
     12 - board/freescale/m52277evb/m52277evb.c	Dram setup
     13 - board/freescale/m52277evb/Makefile	Makefile
     14 - board/freescale/m52277evb/config.mk	config make
     15 - board/freescale/m52277evb/u-boot.lds	Linker description
     16 
     17 - arch/m68k/cpu/mcf5227x/cpu.c		cpu specific code
     18 - arch/m68k/cpu/mcf5227x/cpu_init.c	FBCS, Mux pins, icache and RTC extra regs
     19 - arch/m68k/cpu/mcf5227x/interrupts.c	cpu specific interrupt support
     20 - arch/m68k/cpu/mcf5227x/speed.c		system, flexbus, and cpu clock
     21 - arch/m68k/cpu/mcf5227x/Makefile		Makefile
     22 - arch/m68k/cpu/mcf5227x/config.mk	config make
     23 - arch/m68k/cpu/mcf5227x/start.S		start up assembly code
     24 
     25 - doc/README.m52277evb		This readme file
     26 
     27 - drivers/serial/mcfuart.c	ColdFire common UART driver
     28 - drivers/rtc/mcfrtc.c		Realtime clock Driver
     29 
     30 - include/asm-m68k/bitops.h		Bit operation function export
     31 - include/asm-m68k/byteorder.h		Byte order functions
     32 - include/asm-m68k/crossbar.h		CrossBar structure and definition
     33 - include/asm-m68k/dspi.h		DSPI structure and definition
     34 - include/asm-m68k/edma.h		eDMA structure and definition
     35 - include/asm-m68k/flexbus.h		FlexBus structure and definition
     36 - include/asm-m68k/fsl_i2c.h		I2C structure and definition
     37 - include/asm-m68k/global_data.h	Global data structure
     38 - include/asm-m68k/immap.h		ColdFire specific header file and driver macros
     39 - include/asm-m68k/immap_5227x.h	mcf5227x specific header file
     40 - include/asm-m68k/io.h			io functions
     41 - include/asm-m68k/lcd.h		LCD structure and definition
     42 - include/asm-m68k/m5227x.h		mcf5227x specific header file
     43 - include/asm-m68k/posix_types.h	Posix
     44 - include/asm-m68k/processor.h		header file
     45 - include/asm-m68k/ptrace.h		Exception structure
     46 - include/asm-m68k/rtc.h		Realtime clock header file
     47 - include/asm-m68k/ssi.h		SSI structure and definition
     48 - include/asm-m68k/string.h		String function export
     49 - include/asm-m68k/timer.h		Timer structure and definition
     50 - include/asm-m68k/types.h		Data types definition
     51 - include/asm-m68k/uart.h		Uart structure and definition
     52 - include/asm-m68k/u-boot.h		U-Boot structure
     53 
     54 - include/configs/M52277EVB.h		Board specific configuration file
     55 
     56 - arch/m68k/lib/board.c			board init function
     57 - arch/m68k/lib/cache.c
     58 - arch/m68k/lib/interrupts			Coldfire common interrupt functions
     59 - arch/m68k/lib/m68k_linux.c
     60 - arch/m68k/lib/time.c			Timer functions (Dma timer and PIT)
     61 - arch/m68k/lib/traps.c			Exception init code
     62 
     63 1 MCF52277 specific Options/Settings
     64 ====================================
     65 1.1 pre-loader is no longer suppoer in this coldfire family
     66 
     67 1.2 Configuration settings for M52277EVB Development Board
     68 CONFIG_MCF5227x		-- define for all MCF5227x CPUs
     69 CONFIG_M52277		-- define for all Freescale MCF52277 CPUs
     70 
     71 CONFIG_MCFUART		-- define to use common CF Uart driver
     72 CONFIG_SYS_UART_PORT		-- define UART port number, start with 0, 1 and 2
     73 CONFIG_BAUDRATE		-- define UART baudrate
     74 
     75 CONFIG_MCFRTC		-- define to use common CF RTC driver
     76 CONFIG_SYS_MCFRTC_BASE		-- provide base address for RTC in immap.h
     77 CONFIG_SYS_RTC_OSCILLATOR	-- define RTC clock frequency
     78 RTC_DEBUG		-- define to show RTC debug message
     79 CONFIG_CMD_DATE		-- enable to use date feature in U-Boot
     80 
     81 CONFIG_MCFTMR		-- define to use DMA timer
     82 CONFIG_MCFPIT		-- define to use PIT timer
     83 
     84 CONFIG_SYS_I2C_FSL	-- define to use FSL common I2C driver
     85 CONFIG_SYS_I2C_SOFT	-- define for I2C bit-banged
     86 CONFIG_SYS_I2C_SPEED		-- define for I2C speed
     87 CONFIG_SYS_I2C_SLAVE		-- define for I2C slave address
     88 CONFIG_SYS_I2C_OFFSET		-- define for I2C base address offset
     89 CONFIG_SYS_IMMR		-- define for MBAR offset
     90 
     91 CONFIG_SYS_MBAR		-- define MBAR offset
     92 
     93 CONFIG_MONITOR_IS_IN_RAM -- Not support
     94 
     95 CONFIG_SYS_INIT_RAM_ADDR	-- defines the base address of the MCF52277 internal SRAM
     96 
     97 CONFIG_SYS_CSn_BASE	-- defines the Chip Select Base register
     98 CONFIG_SYS_CSn_MASK	-- defines the Chip Select Mask register
     99 CONFIG_SYS_CSn_CTRL	-- defines the Chip Select Control register
    100 
    101 CONFIG_SYS_SDRAM_BASE	-- defines the DRAM Base
    102 
    103 CONFIG_LCD and CONFIG_CMD_USB are not supported in this current U-Boot,
    104 update will be provided at later time
    105 
    106 2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
    107 ===========================================
    108 2.1. System memory map:
    109 	Flash:		0x00000000-0x3FFFFFFF (1024MB)
    110 	DDR:		0x40000000-0x7FFFFFFF (1024MB)
    111 	SRAM:		0x80000000-0x8FFFFFFF (256MB)
    112 	IP:		0xF0000000-0xFFFFFFFF (256MB)
    113 
    114 2.2. For the initial bringup, we adopted a consistent memory scheme between U-Boot and
    115 	linux kernel, you can customize it based on your system requirements:
    116 	Flash0:		0x00000000-0x00FFFFFF (16MB)
    117 
    118 	DDR:		0x40000000-0x4FFFFFFF (64MB)
    119 	SRAM:		0x80000000-0x80007FFF (32KB)
    120 	IP:		0xFC000000-0xFC0FFFFF (64KB)
    121 
    122 3. COMPILATION
    123 ==============
    124 3.1	To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
    125 uClinux version) from codesourcery.com was used. Download it from:
    126 http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
    127 
    128 3.2 Compilation
    129    export CROSS_COMPILE=cross-compile-prefix
    130    cd u-boot-1.x.x
    131    make distclean
    132    make M52277EVB_config
    133    make
    134 
    135 4. SCREEN DUMP
    136 ==============
    137 4.1 M52277EVB Development board
    138     (NOTE: May not show exactly the same)
    139 
    140 U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
    141 
    142 CPU:   Freescale MCF52277 (Mask:6c Version:0)
    143        CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
    144        INP CLK 16 Mhz VCO CLK 480 Mhz
    145 Board: Freescale 52277 EVB
    146 I2C:   ready
    147 DRAM:  64 MB
    148 FLASH: 16 MB
    149 In:    serial
    150 Out:   serial
    151 Err:   serial
    152 -> print
    153 baudrate=115200
    154 hostname=M52277EVB
    155 inpclk=16000000
    156 loadaddr=(0x40000000 + 0x10000)
    157 load=tftp ${loadaddr) ${u-boot}
    158 upd=run load; run prog
    159 prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
    160 u-boot=u-boot.bin
    161 stdin=serial
    162 stdout=serial
    163 stderr=serial
    164 mem=65024k
    165 
    166 Environment size: 280/32764 bytes
    167 -> bdinfo
    168 memstart    = 0x40000000
    169 memsize     = 0x04000000
    170 flashstart  = 0x00000000
    171 flashsize   = 0x01000000
    172 flashoffset = 0x00000000
    173 sramstart   = 0x80000000
    174 sramsize    = 0x00008000
    175 mbar        = 0xFC000000
    176 busfreq     =     80 MHz
    177 flbfreq     =     80 Mhz
    178 inpfreq     =     16 Mhz
    179 vcofreq     =    480 Mhz
    180 
    181 baudrate    = 115200 bps
    182 ->
    183 -> help
    184 ?       - alias for 'help'
    185 base    - print or set address offset
    186 bdinfo  - print Board Info structure
    187 boot    - boot default, i.e., run 'bootcmd'
    188 bootd   - boot default, i.e., run 'bootcmd'
    189 bootelf - Boot from an ELF image in memory
    190 bootm   - boot application image from memory
    191 bootp	- boot image via network using BootP/TFTP protocol
    192 bootvx  - Boot vxWorks from an ELF image
    193 cmp     - memory compare
    194 coninfo - print console devices and information
    195 cp      - memory copy
    196 crc32   - checksum calculation
    197 date    - get/set/reset date & time
    198 dcache  - enable or disable data cache
    199 echo    - echo args to console
    200 erase   - erase FLASH memory
    201 flinfo  - print FLASH memory information
    202 go      - start application at address 'addr'
    203 help    - print online help
    204 i2c     - I2C sub-system
    205 icache  - enable or disable instruction cache
    206 iminfo  - print header information for application image
    207 imls    - list all images found in flash
    208 itest	- return true/false on integer compare
    209 loadb   - load binary file over serial line (kermit mode)
    210 loads   - load S-Record file over serial line
    211 loady   - load binary file over serial line (ymodem mode)
    212 loop    - infinite loop on address range
    213 ls	- list files in a directory (default /)
    214 md      - memory display
    215 mm      - memory modify (auto-incrementing)
    216 mtest   - simple RAM test
    217 mw      - memory write (fill)
    218 nm      - memory modify (constant address)
    219 ping	- send ICMP ECHO_REQUEST to network host
    220 printenv- print environment variables
    221 protect - enable or disable FLASH write protection
    222 reset   - Perform RESET of the CPU
    223 run     - run commands in an environment variable
    224 saveenv - save environment variables to persistent storage
    225 setenv  - set environment variables
    226 sleep   - delay execution for some time
    227 source  - run script from memory
    228 version - print monitor version
    229 ->
    230