1 Freescale MCF52277EVB ColdFire Development Board
2 ================================================
4 TsiChung Liew(Tsi-Chung.Liew@freescale.com)
6 ===========================================
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
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
25 - doc/README.m52277evb This readme file
27 - drivers/serial/mcfuart.c ColdFire common UART driver
28 - drivers/rtc/mcfrtc.c Realtime clock Driver
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
54 - include/configs/M52277EVB.h Board specific configuration file
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
63 1 MCF52277 specific Options/Settings
64 ====================================
65 1.1 pre-loader is no longer suppoer in this coldfire family
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
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
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
81 CONFIG_MCFTMR -- define to use DMA timer
83 CONFIG_SYS_I2C_FSL -- define to use FSL common I2C driver
84 CONFIG_SYS_I2C_SOFT -- define for I2C bit-banged
85 CONFIG_SYS_I2C_SPEED -- define for I2C speed
86 CONFIG_SYS_I2C_SLAVE -- define for I2C slave address
87 CONFIG_SYS_I2C_OFFSET -- define for I2C base address offset
88 CONFIG_SYS_IMMR -- define for MBAR offset
90 CONFIG_SYS_MBAR -- define MBAR offset
92 CONFIG_MONITOR_IS_IN_RAM -- Not support
94 CONFIG_SYS_INIT_RAM_ADDR -- defines the base address of the MCF52277 internal SRAM
96 CONFIG_SYS_CSn_BASE -- defines the Chip Select Base register
97 CONFIG_SYS_CSn_MASK -- defines the Chip Select Mask register
98 CONFIG_SYS_CSn_CTRL -- defines the Chip Select Control register
100 CONFIG_SYS_SDRAM_BASE -- defines the DRAM Base
102 CONFIG_LCD and CONFIG_CMD_USB are not supported in this current U-Boot,
103 update will be provided at later time
105 2. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
106 ===========================================
107 2.1. System memory map:
108 Flash: 0x00000000-0x3FFFFFFF (1024MB)
109 DDR: 0x40000000-0x7FFFFFFF (1024MB)
110 SRAM: 0x80000000-0x8FFFFFFF (256MB)
111 IP: 0xF0000000-0xFFFFFFFF (256MB)
113 2.2. For the initial bringup, we adopted a consistent memory scheme between U-Boot and
114 linux kernel, you can customize it based on your system requirements:
115 Flash0: 0x00000000-0x00FFFFFF (16MB)
117 DDR: 0x40000000-0x4FFFFFFF (64MB)
118 SRAM: 0x80000000-0x80007FFF (32KB)
119 IP: 0xFC000000-0xFC0FFFFF (64KB)
123 3.1 To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
124 uClinux version) from codesourcery.com was used. Download it from:
125 http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
128 export CROSS_COMPILE=cross-compile-prefix
131 make M52277EVB_config
136 4.1 M52277EVB Development board
137 (NOTE: May not show exactly the same)
139 U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
141 CPU: Freescale MCF52277 (Mask:6c Version:0)
142 CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
143 INP CLK 16 Mhz VCO CLK 480 Mhz
144 Board: Freescale 52277 EVB
155 loadaddr=(0x40000000 + 0x10000)
156 load=tftp ${loadaddr) ${u-boot}
157 upd=run load; run prog
158 prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
165 Environment size: 280/32764 bytes
167 memstart = 0x40000000
169 flashstart = 0x00000000
170 flashsize = 0x01000000
171 flashoffset = 0x00000000
172 sramstart = 0x80000000
173 sramsize = 0x00008000
180 baudrate = 115200 bps
184 base - print or set address offset
185 bdinfo - print Board Info structure
186 boot - boot default, i.e., run 'bootcmd'
187 bootd - boot default, i.e., run 'bootcmd'
188 bootelf - Boot from an ELF image in memory
189 bootm - boot application image from memory
190 bootp - boot image via network using BootP/TFTP protocol
191 bootvx - Boot vxWorks from an ELF image
193 coninfo - print console devices and information
195 crc32 - checksum calculation
196 date - get/set/reset date & time
197 dcache - enable or disable data cache
198 echo - echo args to console
199 erase - erase FLASH memory
200 flinfo - print FLASH memory information
201 go - start application at address 'addr'
202 help - print online help
204 icache - enable or disable instruction cache
205 iminfo - print header information for application image
206 imls - list all images found in flash
207 itest - return true/false on integer compare
208 loadb - load binary file over serial line (kermit mode)
209 loads - load S-Record file over serial line
210 loady - load binary file over serial line (ymodem mode)
211 loop - infinite loop on address range
212 ls - list files in a directory (default /)
214 mm - memory modify (auto-incrementing)
215 mtest - simple RAM test
216 mw - memory write (fill)
217 nm - memory modify (constant address)
218 ping - send ICMP ECHO_REQUEST to network host
219 printenv- print environment variables
220 protect - enable or disable FLASH write protection
221 reset - Perform RESET of the CPU
222 run - run commands in an environment variable
223 saveenv - save environment variables to persistent storage
224 setenv - set environment variables
225 sleep - delay execution for some time
226 source - run script from memory
227 version - print monitor version