常見bash命令
內存讀寫
root@t2080rdb:~# memtool md -h
md - memory display
Usage: md [-bwlqsx] REGION
Display (hex dump) a memory region.
Options:
-b byte access
-w word access (16 bit)
-l long access (32 bit)
-q quad access (64 bit)
-s <FILE> display file (default /dev/mem)
-x swap bytes at output
Memory regions can be specified in two different forms: START+SIZE
or START-END, If START is omitted it defaults to 0x100
Sizes can be specified as decimal, or if prefixed with 0x as hexadecimal.
An optional suffix of k, M or G is for kbytes, Megabytes or Gigabytes.
root@t2080rdb:~#
root@t2080rdb:~#
root@t2080rdb:~# memtool mw -h
mw - memory write
Usage: mw [-bwlqd] OFFSET DATA...
Write DATA value(s) to the specified REGION.
Options:
-b byte access
-w word access (16 bit)
-l long access (32 bit)
-q quad access (64 bit)
-d <FILE> write file (default /dev/mem)
uart
microcom
root@t2080rdb:~# jjip -i uart -s 0xffd700000 -c eb -r str -k 75000000 -p 115200 -m 485
root@t2080rdb:~# jjip -h
Usage: jjip [OPTION]...
test fpga ip function
-i [type], type: uart spi i2c
-s [addr], ip physical start address
-c [cmd], cmd: tx rx eb
tx: send data
rx: receive data
eb: echo back
-t [data], data for send
hex<xxx>, xxx are hex format
str<xxx>, xxx are string
-r [data], rx display mode and rx num: hex<num> str<num>
-k [num], ip clk freq
-p [num], trans speed
-m [mode], ip mode
uart: lite 232 485 422
spi: 0~3, bit0[GENSPI_CPHA] bit1[GENSPI_CPOL]
i2c: slave addr 8bit
-h , show this help
Example:
test uart: jjip -i uart -s 0xa0000000 -c eb -r str -k 100000000 -p 115200 -m lite
test spi: jjip -i spi -s 0xa0000000 -c tx -t hex000155aa55aa -r hex -k 100000000 -p 1000000 -m 0
test i2c: jjip -i spi -s 0xa0000000 -c tx -t hex5101 -r hex4
can
canconfig cansend
i2c
spi
usb
pci
busybox自帶的lspci功能很弱，需要pciutils來獲取全功能的lspci