1Freescale MCF52277EVB ColdFire Development Board 2================================================ 3 4TsiChung Liew(Tsi-Chung.Liew@freescale.com) 5Created Jan 8, 2008 6=========================================== 7 8 9Changed 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 62 631 MCF52277 specific Options/Settings 64==================================== 651.1 pre-loader is no longer suppoer in this coldfire family 66 671.2 Configuration settings for M52277EVB Development Board 68CONFIG_MCF5227x -- define for all MCF5227x CPUs 69CONFIG_M52277 -- define for all Freescale MCF52277 CPUs 70 71CONFIG_MCFUART -- define to use common CF Uart driver 72CONFIG_SYS_UART_PORT -- define UART port number, start with 0, 1 and 2 73CONFIG_BAUDRATE -- define UART baudrate 74 75CONFIG_MCFRTC -- define to use common CF RTC driver 76CONFIG_SYS_MCFRTC_BASE -- provide base address for RTC in immap.h 77CONFIG_SYS_RTC_OSCILLATOR -- define RTC clock frequency 78RTC_DEBUG -- define to show RTC debug message 79CONFIG_CMD_DATE -- enable to use date feature in U-Boot 80 81CONFIG_MCFTMR -- define to use DMA timer 82CONFIG_MCFPIT -- define to use PIT timer 83 84CONFIG_SYS_I2C_FSL -- define to use FSL common I2C driver 85CONFIG_SYS_I2C_SOFT -- define for I2C bit-banged 86CONFIG_SYS_I2C_SPEED -- define for I2C speed 87CONFIG_SYS_I2C_SLAVE -- define for I2C slave address 88CONFIG_SYS_I2C_OFFSET -- define for I2C base address offset 89CONFIG_SYS_IMMR -- define for MBAR offset 90 91CONFIG_SYS_MBAR -- define MBAR offset 92 93CONFIG_MONITOR_IS_IN_RAM -- Not support 94 95CONFIG_SYS_INIT_RAM_ADDR -- defines the base address of the MCF52277 internal SRAM 96 97CONFIG_SYS_CSn_BASE -- defines the Chip Select Base register 98CONFIG_SYS_CSn_MASK -- defines the Chip Select Mask register 99CONFIG_SYS_CSn_CTRL -- defines the Chip Select Control register 100 101CONFIG_SYS_SDRAM_BASE -- defines the DRAM Base 102 103CONFIG_LCD and CONFIG_CMD_USB are not supported in this current U-Boot, 104update will be provided at later time 105 1062. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL 107=========================================== 1082.1. System memory map: 109 Flash: 0x00000000-0x3FFFFFFF (1024MB) 110 DDR: 0x40000000-0x7FFFFFFF (1024MB) 111 SRAM: 0x80000000-0x8FFFFFFF (256MB) 112 IP: 0xF0000000-0xFFFFFFFF (256MB) 113 1142.2. 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 1223. COMPILATION 123============== 1243.1 To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or 125uClinux version) from codesourcery.com was used. Download it from: 126http://www.codesourcery.com/gnu_toolchains/coldfire/download.html 127 1283.2 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 1354. SCREEN DUMP 136============== 1374.1 M52277EVB Development board 138 (NOTE: May not show exactly the same) 139 140U-Boot 1.3.1 (Jan 8 2008 - 12:44:08) 141 142CPU: 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 145Board: Freescale 52277 EVB 146I2C: ready 147DRAM: 64 MB 148FLASH: 16 MB 149In: serial 150Out: serial 151Err: serial 152-> print 153baudrate=115200 154hostname=M52277EVB 155inpclk=16000000 156loadaddr=(0x40000000 + 0x10000) 157load=tftp ${loadaddr) ${u-boot} 158upd=run load; run prog 159prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save 160u-boot=u-boot.bin 161stdin=serial 162stdout=serial 163stderr=serial 164mem=65024k 165 166Environment size: 280/32764 bytes 167-> bdinfo 168memstart = 0x40000000 169memsize = 0x04000000 170flashstart = 0x00000000 171flashsize = 0x01000000 172flashoffset = 0x00000000 173sramstart = 0x80000000 174sramsize = 0x00008000 175mbar = 0xFC000000 176busfreq = 80 MHz 177flbfreq = 80 Mhz 178inpfreq = 16 Mhz 179vcofreq = 480 Mhz 180 181baudrate = 115200 bps 182-> 183-> help 184? - alias for 'help' 185base - print or set address offset 186bdinfo - print Board Info structure 187boot - boot default, i.e., run 'bootcmd' 188bootd - boot default, i.e., run 'bootcmd' 189bootelf - Boot from an ELF image in memory 190bootm - boot application image from memory 191bootp - boot image via network using BootP/TFTP protocol 192bootvx - Boot vxWorks from an ELF image 193cmp - memory compare 194coninfo - print console devices and information 195cp - memory copy 196crc32 - checksum calculation 197date - get/set/reset date & time 198dcache - enable or disable data cache 199echo - echo args to console 200erase - erase FLASH memory 201flinfo - print FLASH memory information 202go - start application at address 'addr' 203help - print online help 204i2c - I2C sub-system 205icache - enable or disable instruction cache 206iminfo - print header information for application image 207imls - list all images found in flash 208itest - return true/false on integer compare 209loadb - load binary file over serial line (kermit mode) 210loads - load S-Record file over serial line 211loady - load binary file over serial line (ymodem mode) 212loop - infinite loop on address range 213ls - list files in a directory (default /) 214md - memory display 215mm - memory modify (auto-incrementing) 216mtest - simple RAM test 217mw - memory write (fill) 218nm - memory modify (constant address) 219ping - send ICMP ECHO_REQUEST to network host 220printenv- print environment variables 221protect - enable or disable FLASH write protection 222reset - Perform RESET of the CPU 223run - run commands in an environment variable 224saveenv - save environment variables to persistent storage 225setenv - set environment variables 226sleep - delay execution for some time 227source - run script from memory 228version - print monitor version 229-> 230