Please help me. Here is complete log

flashrom -p internal -w backup.bin
flashrom v0.9.9-r1954 on Linux 3.16.0-4-686-pae (i686)
flashrom is free software, get the source code at https://flashrom.org

Calibrating delay loop... OK.
No DMI table found.
Found chipset "Intel Braswell".
This chipset is marked as untested. If you are using an up-to-date version
of flashrom *and* were (not) able to successfully update your firmware with it,
then please email a report to flashrom@flashrom.org including a verbose (-V) log.
Thank you!
Enabling flash write... Warning: BIOS region SMM protection is enabled!
Warning: Setting Bios Control at 0x0 from 0x22 to 0x01 failed.
New value is 0x22.
Warning: SPI Configuration Lockdown activated.
OK.
Found Winbond flash chip "W25Q64.W" (8192 kB, SPI) mapped at physical address 0xff800000.
Reading old flash chip contents... done.
Erasing and writing flash chip... Transaction error!
spi_block_erase_20 failed during command execution at address 0x416000
Reading current flash chip contents... done. Looking for another erase function.
spi_block_erase_52 failed during command execution at address 0x410000
Reading current flash chip contents... done. Looking for another erase function.
spi_block_erase_d8 failed during command execution at address 0x410000
Reading current flash chip contents... done. Looking for another erase function.
spi_chip_erase_60 failed during command execution
Reading current flash chip contents... done. Looking for another erase function.
spi_chip_erase_c7 failed during command execution
Looking for another erase function.
No usable erase functions left.
FAILED!
Uh oh. Erase/write failed. Checking if anything has changed.
Reading current flash chip contents... done.
Apparently at least some data has changed.
Your flash chip is in an unknown state.
Get help on IRC at chat.freenode.net (channel #flashrom) or
mail flashrom@flashrom.org with the subject "FAILED: <your board name>"!
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DO NOT REBOOT OR POWEROFF!


flashrom -V
flashrom v0.9.9-r1954 on Linux 3.16.0-4-686-pae (i686)
flashrom is free software, get the source code at https://flashrom.org

flashrom was built with libpci 3.2.1, GCC 4.9.2, little endian
Command line (1 args): flashrom -V
Please select a programmer with the --programmer parameter.
Previously this was not necessary because there was a default set.
To choose the mainboard of this computer use 'internal'. Valid choices are:
internal, dummy, nic3com, nicrealtek, gfxnvidia, drkaiser, satasii, atavia,
it8212, ft2232_spi, serprog, buspirate_spi, dediprog, rayer_spi, pony_spi,
nicintel, nicintel_spi, nicintel_eeprom, ogp_spi, satamv, linux_spi,
usbblaster_spi, pickit2_spi, ch341a_spi.