flash through ch341a on linux

Problem:

Found ch341a flashing sw have virus, so  move to Ubuntu 16.04 flashing.

Env:

apt-get install flashrom

gd25Q64

ch341a flasher

Steps:

1. help info

sudo flashrom -p ch341a_spi --help
flashrom v0.9.9-rc1-r1942 on Linux 4.4.0-87-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Please note that the command line interface for flashrom has changed between
0.9.5 and 0.9.6 and will change again before flashrom 1.0.

Usage: flashrom [-h|-R|-L|-p [:] [-c ]
[-E|(-r|-w|-v) ] [-l [-i ]...] [-n] [-f]]
[-V[V[V]]] [-o ]

 -h | --help                        print this help text
 -R | --version                     print version (release)
 -r | --read                  read flash and save to
 -w | --write                 write to flash
 -v | --verify                verify flash against
 -E | --erase                       erase flash memory
 -V | --verbose                     more verbose output
 -c | --chip              probe only for specified flash chip
 -f | --force                       force specific operations (see man page)
 -n | --noverify                    don't auto-verify
 -l | --layout          read ROM layout from
 -i | --image                 only flash image from flash layout
 -o | --output             log output to
 -L | --list-supported              print supported devices
 -p | --programmer [:] specify the programmer device. One of
    internal, dummy, nic3com, nicrealtek, gfxnvidia, drkaiser, satasii, atavia,
    it8212, serprog, buspirate_spi, dediprog, rayer_spi, pony_spi, nicintel,
    nicintel_spi, nicintel_eeprom, ogp_spi, satamv, linux_spi, pickit2_spi,
    ch341a_spi.

2. device detect

 sudo flashrom -p ch341a_spi

flashrom v0.9.9-rc1-r1942 on Linux 4.4.0-87-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
Found GigaDevice flash chip "GD25Q64(B)" (8192 kB, SPI) on ch341a_spi.

3. nor wirte

sudo flashrom -p ch341a_spi -w FULL_FIRM_8M.bin
flashrom v0.9.9-rc1-r1942 on Linux 4.4.0-87-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
Found GigaDevice flash chip "GD25Q64(B)" (8192 kB, SPI) on ch341a_spi.
Reading old flash chip contents... done.
Erasing and writing flash chip... Erase/write done.
Verifying flash... VERIFIED.

4. nor read

 sudo flashrom -p ch341a_spi -r temp.bin
flashrom v0.9.9-rc1-r1942 on Linux 4.4.0-87-generic (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
Found GigaDevice flash chip "GD25Q64(B)" (8192 kB, SPI) on ch341a_spi.
Reading flash... done.