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https://github.com/AsahiLinux/u-boot
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238 lines
8 KiB
Text
238 lines
8 KiB
Text
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Freescale MCF52277EVB ColdFire Development Board
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================================================
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TsiChung Liew(Tsi-Chung.Liew@freescale.com)
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Created Jan 8, 2008
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===========================================
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Changed files:
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==============
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- board/freescale/m52277evb/m52277evb.c Dram setup
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- board/freescale/m52277evb/Makefile Makefile
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- board/freescale/m52277evb/config.mk config make
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- board/freescale/m52277evb/u-boot.lds Linker description
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- cpu/mcf5227x/cpu.c cpu specific code
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- cpu/mcf5227x/cpu_init.c FBCS, Mux pins, icache and RTC extra regs
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- cpu/mcf5227x/interrupts.c cpu specific interrupt support
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- cpu/mcf5227x/speed.c system, flexbus, and cpu clock
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- cpu/mcf5227x/Makefile Makefile
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- cpu/mcf5227x/config.mk config make
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- cpu/mcf5227x/start.S start up assembly code
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- doc/README.m52277evb This readme file
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- drivers/serial/mcfuart.c ColdFire common UART driver
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- drivers/rtc/mcfrtc.c Realtime clock Driver
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- include/asm-m68k/bitops.h Bit operation function export
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- include/asm-m68k/byteorder.h Byte order functions
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- include/asm-m68k/crossbar.h CrossBar structure and definition
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- include/asm-m68k/dspi.h DSPI structure and definition
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- include/asm-m68k/edma.h eDMA structure and definition
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- include/asm-m68k/flexbus.h FlexBus structure and definition
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- include/asm-m68k/fsl_i2c.h I2C structure and definition
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- include/asm-m68k/global_data.h Global data structure
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- include/asm-m68k/immap.h ColdFire specific header file and driver macros
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- include/asm-m68k/immap_5227x.h mcf5227x specific header file
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- include/asm-m68k/io.h io functions
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- include/asm-m68k/lcd.h LCD structure and definition
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- include/asm-m68k/m5227x.h mcf5227x specific header file
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- include/asm-m68k/posix_types.h Posix
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- include/asm-m68k/processor.h header file
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- include/asm-m68k/ptrace.h Exception structure
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- include/asm-m68k/rtc.h Realtime clock header file
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- include/asm-m68k/ssi.h SSI structure and definition
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- include/asm-m68k/string.h String function export
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- include/asm-m68k/timer.h Timer structure and definition
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- include/asm-m68k/types.h Data types definition
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- include/asm-m68k/uart.h Uart structure and definition
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- include/asm-m68k/u-boot.h u-boot structure
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- include/configs/M52277EVB.h Board specific configuration file
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- lib_m68k/board.c board init function
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- lib_m68k/cache.c
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- lib_m68k/interrupts Coldfire common interrupt functions
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- lib_m68k/m68k_linux.c
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- lib_m68k/time.c Timer functions (Dma timer and PIT)
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- lib_m68k/traps.c Exception init code
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1 MCF52277 specific Options/Settings
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====================================
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1.1 pre-loader is no longer suppoer in this coldfire family
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1.2 Configuration settings for M52277EVB Development Board
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CONFIG_MCF5227x -- define for all MCF5227x CPUs
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CONFIG_M52277 -- define for all Freescale MCF52277 CPUs
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CONFIG_M52277EVB -- define for M52277EVB board
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CONFIG_MCFUART -- define to use common CF Uart driver
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CFG_UART_PORT -- define UART port number, start with 0, 1 and 2
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CONFIG_BAUDRATE -- define UART baudrate
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CONFIG_MCFRTC -- define to use common CF RTC driver
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CFG_MCFRTC_BASE -- provide base address for RTC in immap.h
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CFG_RTC_OSCILLATOR -- define RTC clock frequency
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RTC_DEBUG -- define to show RTC debug message
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CONFIG_CMD_DATE -- enable to use date feature in u-boot
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CONFIG_MCFTMR -- define to use DMA timer
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CONFIG_MCFPIT -- define to use PIT timer
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CONFIG_FSL_I2C -- define to use FSL common I2C driver
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CONFIG_HARD_I2C -- define for I2C hardware support
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CONFIG_SOFT_I2C -- define for I2C bit-banged
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CFG_I2C_SPEED -- define for I2C speed
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CFG_I2C_SLAVE -- define for I2C slave address
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CFG_I2C_OFFSET -- define for I2C base address offset
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CFG_IMMR -- define for MBAR offset
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CFG_MBAR -- define MBAR offset
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CONFIG_MONITOR_IS_IN_RAM -- Not support
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CFG_INIT_RAM_ADDR -- defines the base address of the MCF52277 internal SRAM
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CFG_CSn_BASE -- defines the Chip Select Base register
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CFG_CSn_MASK -- defines the Chip Select Mask register
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CFG_CSn_CTRL -- defines the Chip Select Control register
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CFG_SDRAM_BASE -- defines the DRAM Base
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CONFIG_LCD and CONFIG_CMD_USB are not supported in this current u-boot,
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update will be provided at later time
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2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
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===========================================
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2.1. System memory map:
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Flash: 0x00000000-0x3FFFFFFF (1024MB)
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DDR: 0x40000000-0x7FFFFFFF (1024MB)
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SRAM: 0x80000000-0x8FFFFFFF (256MB)
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IP: 0xF0000000-0xFFFFFFFF (256MB)
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2.2. For the initial bringup, we adopted a consistent memory scheme between u-boot and
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linux kernel, you can customize it based on your system requirements:
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Flash0: 0x00000000-0x00FFFFFF (16MB)
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DDR: 0x40000000-0x4FFFFFFF (64MB)
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SRAM: 0x80000000-0x80007FFF (32KB)
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IP: 0xFC000000-0xFC0FFFFF (64KB)
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3. COMPILATION
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==============
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3.1 To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
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uClinux version) from codesourcery.com was used. Download it from:
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http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
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3.2 Compilation
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export CROSS_COMPILE=cross-compile-prefix
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cd u-boot-1.x.x
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make distclean
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make M52277EVB_config
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make
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4. SCREEN DUMP
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==============
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4.1 M52277EVB Development board
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(NOTE: May not show exactly the same)
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U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
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CPU: Freescale MCF52277 (Mask:6c Version:0)
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CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
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INP CLK 16 Mhz VCO CLK 480 Mhz
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Board: Freescale 52277 EVB
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I2C: ready
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DRAM: 64 MB
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FLASH: 16 MB
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In: serial
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Out: serial
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Err: serial
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-> print
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baudrate=115200
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hostname=M52277EVB
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inpclk=16000000
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loadaddr=(0x40000000 + 0x10000)
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load=tftp ${loadaddr) ${u-boot}
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upd=run load; run prog
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prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
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u-boot=u-boot.bin
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stdin=serial
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stdout=serial
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stderr=serial
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mem=65024k
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Environment size: 280/32764 bytes
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-> bdinfo
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memstart = 0x40000000
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memsize = 0x04000000
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flashstart = 0x00000000
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flashsize = 0x01000000
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flashoffset = 0x00000000
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sramstart = 0x80000000
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sramsize = 0x00008000
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mbar = 0xFC000000
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busfreq = 80 MHz
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flbfreq = 80 Mhz
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inpfreq = 16 Mhz
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vcofreq = 480 Mhz
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baudrate = 115200 bps
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->
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-> help
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? - alias for 'help'
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autoscr - run script from memory
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base - print or set address offset
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bdinfo - print Board Info structure
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boot - boot default, i.e., run 'bootcmd'
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bootd - boot default, i.e., run 'bootcmd'
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bootelf - Boot from an ELF image in memory
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bootm - boot application image from memory
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bootp - boot image via network using BootP/TFTP protocol
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bootvx - Boot vxWorks from an ELF image
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cmp - memory compare
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coninfo - print console devices and information
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cp - memory copy
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crc32 - checksum calculation
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date - get/set/reset date & time
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dcache - enable or disable data cache
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echo - echo args to console
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erase - erase FLASH memory
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flinfo - print FLASH memory information
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go - start application at address 'addr'
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help - print online help
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icache - enable or disable instruction cache
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icrc32 - checksum calculation
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iloop - infinite loop on address range
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imd - i2c memory display
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iminfo - print header information for application image
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imls - list all images found in flash
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imm - i2c memory modify (auto-incrementing)
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imw - memory write (fill)
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inm - memory modify (constant address)
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iprobe - probe to discover valid I2C chip addresses
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itest - return true/false on integer compare
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loadb - load binary file over serial line (kermit mode)
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loads - load S-Record file over serial line
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loady - load binary file over serial line (ymodem mode)
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loop - infinite loop on address range
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ls - list files in a directory (default /)
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md - memory display
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mm - memory modify (auto-incrementing)
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mtest - simple RAM test
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mw - memory write (fill)
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nm - memory modify (constant address)
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ping - send ICMP ECHO_REQUEST to network host
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printenv- print environment variables
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protect - enable or disable FLASH write protection
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reset - Perform RESET of the CPU
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run - run commands in an environment variable
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saveenv - save environment variables to persistent storage
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setenv - set environment variables
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sleep - delay execution for some time
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version - print monitor version
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->
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