This kernel module allows for QFPROM reading and writing through either a pre-defined static list within the code or through a TCP server from userland or remotely.
You will need to compile the module for your kernel. There are many instructions on the web that can be of assistance here.
##Read/Write from a static list defined within the module
You can add new rows to read/write from in the module itself. Open up main.c and find the fuses static list of addresses. See the structures qfprom_write_operation_entry_t and qfprom_write_operation_entry_t for formatting.
##Read/Write through a TCP Server
To enable the TCP server, install the module passing the port with the parameter start_tcp
insmod qfprom_tcp.ko start_tcp=[PORT]
insmod qfprom_tcp.ko start_tcp=610
You can see in your kernel logs that the TCP server was successfully started
cat /proc/kmsg | grep qfprom
##Client
The provided client is written in python. You could write your own client if you need, request and response structures are defined in server.h
To use the client, first install the server module. Then from the command line execute the following command:
python client.py [HOST] [PORT] -r 0x08000000 0x07000000
This would connect and read the rows at address 0x08000000 and 0x07000000.
You can also request corrected reads for rows that are corrected:
python client.py [HOST] [PORT] -rc 0x08000000 0x07000000
You can combine the two as well:
python client.py [HOST] [PORT] -r 0x08000000 0x07000000 -rc 0x08000000 0x07000000
##Read / Write Permissions
You still need proper permissions blown into certain fuses to read/write certain rows.