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TL		 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- cpu/mcf5227x/cpu.c cpu specific code
18- cpu/mcf5227x/cpu_init.c FBCS, Mux pins, icache and RTC extra regs
19- cpu/mcf5227x/interrupts.c cpu specific interrupt support
20- cpu/mcf5227x/speed.c system, flexbus, and cpu clock
21- cpu/mcf5227x/Makefile Makefile
22- cpu/mcf5227x/config.mk config make
23- 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
ea0364f1
PT		 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
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TL		 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
70CONFIG_M52277EVB -- define for M52277EVB board
71
72CONFIG_MCFUART -- define to use common CF Uart driver
6d0f6bcf 73CONFIG_SYS_UART_PORT -- define UART port number, start with 0, 1 and 2
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TL		 74CONFIG_BAUDRATE -- define UART baudrate
75
76CONFIG_MCFRTC -- define to use common CF RTC driver
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JCPV		 77CONFIG_SYS_MCFRTC_BASE -- provide base address for RTC in immap.h
78CONFIG_SYS_RTC_OSCILLATOR -- define RTC clock frequency
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TL		 79RTC_DEBUG -- define to show RTC debug message
80CONFIG_CMD_DATE -- enable to use date feature in u-boot
81
82CONFIG_MCFTMR -- define to use DMA timer
83CONFIG_MCFPIT -- define to use PIT timer
84
85CONFIG_FSL_I2C -- define to use FSL common I2C driver
86CONFIG_HARD_I2C -- define for I2C hardware support
87CONFIG_SOFT_I2C -- define for I2C bit-banged
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JCPV		 88CONFIG_SYS_I2C_SPEED -- define for I2C speed
89CONFIG_SYS_I2C_SLAVE -- define for I2C slave address
90CONFIG_SYS_I2C_OFFSET -- define for I2C base address offset
91CONFIG_SYS_IMMR -- define for MBAR offset
1552af70 92
6d0f6bcf 93CONFIG_SYS_MBAR -- define MBAR offset
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TL		 94
95CONFIG_MONITOR_IS_IN_RAM -- Not support
96
6d0f6bcf 97CONFIG_SYS_INIT_RAM_ADDR -- defines the base address of the MCF52277 internal SRAM
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JCPV		 99CONFIG_SYS_CSn_BASE -- defines the Chip Select Base register
100CONFIG_SYS_CSn_MASK -- defines the Chip Select Mask register
101CONFIG_SYS_CSn_CTRL -- defines the Chip Select Control register
1552af70 102
6d0f6bcf 103CONFIG_SYS_SDRAM_BASE -- defines the DRAM Base
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TL		 104
105CONFIG_LCD and CONFIG_CMD_USB are not supported in this current u-boot,
106update will be provided at later time
107
1082. MEMORY MAP UNDER U-BOOT AND LINUX KERNEL
109===========================================
1102.1. System memory map:
111 Flash: 0x00000000-0x3FFFFFFF (1024MB)
112 DDR: 0x40000000-0x7FFFFFFF (1024MB)
113 SRAM: 0x80000000-0x8FFFFFFF (256MB)
114 IP: 0xF0000000-0xFFFFFFFF (256MB)
115
1162.2. For the initial bringup, we adopted a consistent memory scheme between u-boot and
117 linux kernel, you can customize it based on your system requirements:
118 Flash0: 0x00000000-0x00FFFFFF (16MB)
119
120 DDR: 0x40000000-0x4FFFFFFF (64MB)
121 SRAM: 0x80000000-0x80007FFF (32KB)
122 IP: 0xFC000000-0xFC0FFFFF (64KB)
123
1243. COMPILATION
125==============
1263.1 To create U-Boot the gcc-4.1-xx compiler set (ColdFire ELF or
127uClinux version) from codesourcery.com was used. Download it from:
128http://www.codesourcery.com/gnu_toolchains/coldfire/download.html
129
1303.2 Compilation
131 export CROSS_COMPILE=cross-compile-prefix
132 cd u-boot-1.x.x
133 make distclean
134 make M52277EVB_config
135 make
136
1374. SCREEN DUMP
138==============
1394.1 M52277EVB Development board
140 (NOTE: May not show exactly the same)
141
142U-Boot 1.3.1 (Jan 8 2008 - 12:44:08)
143
144CPU: Freescale MCF52277 (Mask:6c Version:0)
145 CPU CLK 160 Mhz BUS CLK 80 Mhz FLB CLK 80 MHZ
146 INP CLK 16 Mhz VCO CLK 480 Mhz
147Board: Freescale 52277 EVB
148I2C: ready
149DRAM: 64 MB
150FLASH: 16 MB
151In: serial
152Out: serial
153Err: serial
154-> print
155baudrate=115200
156hostname=M52277EVB
157inpclk=16000000
158loadaddr=(0x40000000 + 0x10000)
159load=tftp ${loadaddr) ${u-boot}
160upd=run load; run prog
161prog=prot off 0 3ffff;era 0 3ffff;cp.b ${loadaddr} 0 ${filesize};save
162u-boot=u-boot.bin
163stdin=serial
164stdout=serial
165stderr=serial
166mem=65024k
167
168Environment size: 280/32764 bytes
169-> bdinfo
170memstart = 0x40000000
171memsize = 0x04000000
172flashstart = 0x00000000
173flashsize = 0x01000000
174flashoffset = 0x00000000
175sramstart = 0x80000000
176sramsize = 0x00008000
177mbar = 0xFC000000
178busfreq = 80 MHz
179flbfreq = 80 Mhz
180inpfreq = 16 Mhz
181vcofreq = 480 Mhz
182
183baudrate = 115200 bps
184->
185-> help
186? - alias for 'help'
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TL		 187base - print or set address offset
188bdinfo - print Board Info structure
189boot - boot default, i.e., run 'bootcmd'
190bootd - boot default, i.e., run 'bootcmd'
191bootelf - Boot from an ELF image in memory
192bootm - boot application image from memory
193bootp - boot image via network using BootP/TFTP protocol
194bootvx - Boot vxWorks from an ELF image
195cmp - memory compare
196coninfo - print console devices and information
197cp - memory copy
198crc32 - checksum calculation
199date - get/set/reset date & time
200dcache - enable or disable data cache
201echo - echo args to console
202erase - erase FLASH memory
203flinfo - print FLASH memory information
204go - start application at address 'addr'
205help - print online help
0f89c54b 206i2c - I2C sub-system
1552af70 207icache - enable or disable instruction cache
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TL		 208iminfo - print header information for application image
209imls - list all images found in flash
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TL		 210itest - return true/false on integer compare
211loadb - load binary file over serial line (kermit mode)
212loads - load S-Record file over serial line
213loady - load binary file over serial line (ymodem mode)
214loop - infinite loop on address range
215ls - list files in a directory (default /)
216md - memory display
217mm - memory modify (auto-incrementing)
218mtest - simple RAM test
219mw - memory write (fill)
220nm - memory modify (constant address)
221ping - send ICMP ECHO_REQUEST to network host
222printenv- print environment variables
223protect - enable or disable FLASH write protection
224reset - Perform RESET of the CPU
225run - run commands in an environment variable
226saveenv - save environment variables to persistent storage
227setenv - set environment variables
228sleep - delay execution for some time
3202d331 229source - run script from memory
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TL		 230version - print monitor version
231->
"Das U-Boot" Source Tree