Nick: zlatistiv
E-mail: zlatistiv@gmail.com
Board: 25Q64JVSIQ
Contents: 
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" --wp-enable --wp-range 0x007ff000,0x00001000 -o wp_enable.log
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Enabled hardware protection
Activated protection range: start=0x007ff000 length=0x00001000 (upper 1/2048)
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" --wp-status
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Protection range: start=0x007ff000 length=0x00001000 (upper 1/2048)
Protection mode: hardware
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ cat wp_enable.log 
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom was built with GCC 10.2.1 20210110, little endian
Command line (9 args): ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c W25Q64JV-.Q --wp-enable --wp-range 0x007ff000,0x00001000 -o wp_enable.log
Initializing linux_spi programmer
Using default 2000kHz clock. Use 'spispeed' parameter to override.
Using device /dev/spidev0.0
Using 2000kHz clock
get_max_kernel_buf_size: Using value from /sys/module/spidev/parameters/bufsiz as max buffer size.
linux_spi_init: max_kernel_buf_size: 4096
The following protocols are supported: SPI.
Probing for Winbond W25Q64JV-.Q, 8192 kB: compare_id: id1 0xef, id2 0x4017
Added layout entry 00000000 - 007fffff named complete flash
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Chip status register is 0x00.
This chip may contain one-time programmable memory. flashrom cannot read
and may never be able to write it, hence it may not be able to completely
clone the contents of this chip (see man page for details).
write_wp_bits: wp_verify reg:1 value:0x44
write_wp_bits: wp_verify reg:2 value:0x2
write_wp_bits: wp_verify reg:3 value:0x60
write_wp_bits: wp_verify reg:1 value:0xc4
write_wp_bits: wp_verify reg:2 value:0x2
write_wp_bits: wp_verify reg:3 value:0x60
Enabled hardware protection
Activated protection range: start=0x007ff000 length=0x00001000 (upper 1/2048)
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ # From here on WP pin is pulled to ground, preventing flashrom from modifying the status registers
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" --wp-disable
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Failed to apply new WP settings: unexpected WP configuration read back from chip
Note: hardware status register protection is enabled. The chip's WP# pin must be set to an inactive voltage level to be able to change the WP settings.
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" --wp-range 0x0,0x0
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Failed to apply new WP settings: unexpected WP configuration read back from chip
Note: hardware status register protection is enabled. The chip's WP# pin must be set to an inactive voltage level to be able to change the WP settings.
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ cat layout 
0x0:0x7fefff head
0x7ff000:0x7fffff tail
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ # Writing to the upper 1/2048 part of the flash will fail, verified after read
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" -w zero.bin -l layout --image tail
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using region: "tail".
Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Failed to unlock flash status reg with wp support.
Block protection could not be disabled!
Reading old flash chip contents... done.
Updating flash chip contents... FAILED at 0x007ff000! Expected=0xff, Found=0x38, failed byte count from 0x007ff000-0x007fffff: 0xfec
ERASE FAILED!
Erase/write done from 7ff000 to 7fffff
Write Failed!Uh oh. Erase/write failed. Checking if anything has changed.
Reading current flash chip contents... done.
Good, writing to the flash chip apparently didn't do anything.
Please check the connections (especially those to write protection pins) between
the programmer and the flash chip. If you think the error is caused by flashrom
please report this to the mailing list at flashrom@flashrom.org or on chat (see
https://flashrom.org/contact.html for details), thanks!
pi@raspberrypi:~/flashrom/builddir $
pi@raspberrypi:~/flashrom/builddir $ 
pi@raspberrypi:~/flashrom/builddir $ # Writing to the first 2047/2048 of the flash works as expected, verified after read
pi@raspberrypi:~/flashrom/builddir $ ./flashrom -p linux_spi:dev=/dev/spidev0.0 -c "W25Q64JV-.Q" -w zero.bin -l layout --image head
flashrom v1.6.0-devel (git:v1.5.0-51-ge7ac0f1d) on Linux 6.1.21-v8+ (aarch64)
flashrom is free software, get the source code at https://flashrom.org

Using region: "head".
Using default 2000kHz clock. Use 'spispeed' parameter to override.
Found Winbond flash chip "W25Q64JV-.Q" (8192 kB, SPI) on linux_spi.
Failed to unlock flash status reg with wp support.
Block protection could not be disabled!
Reading old flash chip contents... done.
Updating flash chip contents... Erase/write done from 0 to 7fefff
Verifying flash... VERIFIED.
pi@raspberrypi:~/flashrom/builddir $