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diff --git a/u-boot/doc/README.m52277evb b/u-boot/doc/README.m52277evb new file mode 100644 index 0000000..b6e955b --- /dev/null +++ b/u-boot/doc/README.m52277evb @@ -0,0 +1,231 @@ +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_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' +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 +-> |