RedBoot指令集

一. RedBoot简介

1. RedBoot是基于eCos操作系统的，它的可移植性很高，移植的主要工作在于硬件抽象层的修改，硬件抽象层对处理器的结构和系统硬件平台进行抽象，主要包括三大模块－体系结构抽象层，变体抽象层和平台抽象层。体系结构抽象层主要是指eCos所支持的具有不同体系结构的处理器系列，如ARM系列，PowerPC系统，MIPS系列等等。变体抽象层指的是处理器处理器系列中某款处理器在Cache，MMU和FPU等方面所具有的特殊性。平台抽象性则是对当前系统硬件平台的抽象，包括了平台的启动，芯片选择与配置，定时设备，I/O寄存器访问以及中断寄存器等等。其中平台抽象层代码是移植的重点。

2. RedBoot能通过网口或串口下载并执行嵌入式应用程序，包括嵌入式linux和eCos应用程序。RedBoot还可以和GDB通过网口或串口来调试应用程序。

二. RedBoot命令

1. alias—manipulate command line aliases

   alias {name} [value]

   如： RedBoot> alias frank "Who are you? %{joe}"

   Update RedBoot non-volatile configuration - continue (y/n)? n

   RedBoot> = %{frank}

   Who are you? This is Joe

2. baudrate—set the baud rate for the system serial console

   baudrate [-b rate]

   如： RedBoot>baudrate

   RedBoot>baudrate -b 115200

3. cache—control hardware cache

   cache [on | off]

   如：RedBoot>cache

   RedBoot>cache on

   RedBoot>cache off

4. channel—select the system console channel

   channel [-l | channel_number]

   如：RedBoot>channel

   RedBoot>channel 99

   RedBoot>channel -l

5. cksum—compute POSIX checksums

   cksum {-b location} {-l length}

   如：RedBoot>cksum -b 0x100000 -l 0x100

6. disks—list available disk partitions

   disks

   如：RedBoot>disks

7. dump—display memory

   dump {-b location} [-l length] [-s] [-1][-2][-4]

   如：RedBoot>dump -b 0x100000 -2

8. help—display help on available commands

   help [topic]

   如：RedBoot>help

   RedBoot>help fis

9. iopeek—read I/Olocation

   iopeek [-b location] [-1][-2][-4]

   如：RedBoot>iopeek -b 0x3f8 -4

10. iopoke—write I/O location

    iopoke [-b location][-1][-2][-4][-v value]

    如：RedBoot>iopoke -b 0x2000 -v 0x123 -2

11. gunzip—uncompress GZIP compressed data

    gunzip {-s source}{-d destination}

    如：gunzip -s 0x100000 -d 0x200000

12. ip_address—set IP addresses

    ip_address [-b][-l local_ip_address][/netmask_length]][-h server_ip_address][-d DNS_server_ip_address]

    如：RedBoot>ip_address

    RedBoot>ip_address -l 192.168.1.32/24 -d 192.168.1.101 -h 192.168.1.104

13. load—download programs or data to the RedBoot platform

    load [-v][-d][-r][-m[[xmodem | ymodem] | http | tftp | disk]][-h server_ip_address][-f location][-b location][-c channel][file_name]

    -v:quiet -d:non-compressed data -r:formatted(S-records,ELF image,etc)

    -f: address in flash to load the data -b:address in memory to load the data

    如：RedBoot>load redboot.ROM -b 0x8c400000 -m HTTP -h 192.168.1.104

14. mcmp—compare two segments of memory

    mcmp {-s location}{-d location}{-l length}[-1 | -2 | -4]

    -s: location for start of data -d: location for start of data

    如：RedBoot>mcmp -s 0x100000 -d 0x200000 -l 0x20 -2

15. mcopy—copy memory

    mcopy {-s source}{-d destination}{-l length}[-1| -2 | -4]

    如：mcopy -s 0x100000 -d 0x200000 -2 -l 0x20

16. mfill—fill ram with a specified patterm

    mfill {-b location}{-l length}{-p value}[-1 | -2 | -4]

    -b: location in memory for start of data -p: data value to fill with

    如：mfill -b 0x100000 -l 0x20 -p 0xDEADFACE

17. ping—verify network connectivity

    ping [-v][-i local_ip_address][-l length][-n count][-t timeout][-r rate]{-h server_ip_address}

    -v :quiet -l:the length of the ICMP data payload -n:control the number of packets to be sent -t:how long to wait for the round-trip to complete,specified in milliseconds

    -r:how fast to deliver packets

    如：ping -h 192.168.1.101 -v -n 4

18. reset—reset the device

    reset

    如：reset

19. version—display redboot version information

    version

    如：version

20. fis init – initialize Flash Image System(FIS)

    fis init [-f]

    -f: all blocks of flash memory(except for the boot blocks)will be erased as part of the initialization procedure.It should normally only be executed once, when RedBoot is first installed on the hardware.

    如：RedBoot>fis init

    RedBoot>fis init -f

21. fis list – list Flash Image System directory

    fis list [-c][-d]

    -c: show image checksum instead of memory address

    -d: show image data length instead of amount of flash occupied by image

    如：RedBoot>fis init

    RedBoot>fis init -c

    RedBoot>fis init -d

22. fis free – free flash image

    fis free

    如：RedBoot>fis free

23. fis create – create flash image

    fis create {-b data_address}{-l length}[-f flash_address][-e entry][-r relocation_address][-s data_length][-n][name]

    -b: address of data to be written to the flash

    -l: length of flash area to occopy

    -f: address of flash area to occupy

    -e: entry address for an executable image,used by the fis load command

    -r:address where the image should be relocated to by the fis load command

    -s:actual length of data written to image.this is used to control the range over which the checksum is made

    -n:when set , no image data will be written to the flash. Only the FIS directory will be updated.

    Name: name of flash image

    如：RedBoot>fis create RedBoot -f 0xa0000000 -b 0x8c400000 -l 0x20000

24. fis load – load flash image

    fis load [-b load_address][-c][-d][name]

    -b: address the image should be loaded to

    -c: compute and print the checksum of the image data after it has been loaded into memory

    -d: decompress gzipped image while copying it from flash to RAM

    name: the name of the file , as shown in th FIS directory

    如：RedBoot>fis load RedBoot[RAM]

25. fis delete – delete flash image

    fis delete {name}

    name:name of image that should be deleted

    如：RedBoot>fis delete RedBoot

26. fis lock –lock flash area

    fis lock {-f flash_address}{-l length}

    -f flash_address: address of area to be locked

    -l length: length of area to be locked

    如：RedBoot>fis lock -f 0xa0040000 -l 0x20000

27. fis unlock – unlock flash area

    fis unlock {-f flash_address}{-l length}

    -f flash_address:address of area to be unlocked

    -l length: length of area to be unlocked

    如：RedBoot>fis unlock -f 0xa0040000 -l 0x20000

28. fis erase – erase flash area

    fis erase {-f flash_address}{-l length}

    -f flash_address:address of area to be erased

    -l length: length of area to be erased

    如：fis erase -f 0xa0040000 -l 0x20000

29. fis write – write flash area

    fis write {-b mem_adddress}{-l length}{-f flash_address}

    -b mem_address: address of data to be written to flash

    -l length: length of data to be written

    -f flash_address: address of flash to write to

    如：RedBoot:fis write -b 0x0606f000 -l 0x1000 -f 0x00020000

30. go – execute a program

    go [-w timeout][-c][-n][start_address]

    -w timeout: how long to wait before starting execution

    -c : go with caches enabled

    -n: go with network interface stopped

    start_address: address in memory to begin execution

    如：RedBoot>go -w 10 0x40040

31. exec – execute a linux kernel

    exec [-w timeout][-r ramdisk_address][-s ramdisk_length][-b load_address{-l load_length}][-c kernel_command_line][entry_point]

    -w timeout: time to wait before starting execution

    -r ramdisk_address: address in memory of”initrd”-style ramdisk-passed to linux kernel

    -s ramdisk_length: length of ramdisk image- passed to linux kernel

    -b load_address:address in memory of the linux kernel image

    -l load_length:length of linux kernel image

    -c kernel_command_line :command line to pass to the linux kernel

    -x :boot kernel with endianess opposite of redboot endianess

    entry_address starting address for linux kernel execution

    如：RedBoot>exec -b 0x100000 -l 0x800000 -c“noinitrd root=/dev/mtdblock3 console=ttySA0”