| 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 |
| |
| - arch/m68k/cpu/mcf5227x/cpu.c cpu specific code |
| - arch/m68k/cpu/mcf5227x/cpu_init.c FBCS, Mux pins, icache and RTC extra regs |
| - arch/m68k/cpu/mcf5227x/interrupts.c cpu specific interrupt support |
| - arch/m68k/cpu/mcf5227x/speed.c system, flexbus, and cpu clock |
| - arch/m68k/cpu/mcf5227x/Makefile Makefile |
| - arch/m68k/cpu/mcf5227x/config.mk config make |
| - arch/m68k/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 |
| |
| - arch/m68k/lib/board.c board init function |
| - arch/m68k/lib/cache.c |
| - arch/m68k/lib/interrupts Coldfire common interrupt functions |
| - arch/m68k/lib/m68k_linux.c |
| - arch/m68k/lib/time.c Timer functions (Dma timer and PIT) |
| - arch/m68k/lib/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_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_SYS_I2C_FSL -- define to use FSL common I2C driver |
| CONFIG_SYS_I2C_SOFT -- 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' |
| 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 |
| i2c - I2C sub-system |
| icache - enable or disable instruction cache |
| iminfo - print header information for application image |
| imls - list all images found in flash |
| 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 |
| source - run script from memory |
| version - print monitor version |
| -> |
