• G
    firmware: introduce sysfs driver for QEMU's fw_cfg device · 75f3e8e4
    Gabriel Somlo 提交于
    Make fw_cfg entries of type "file" available via sysfs. Entries
    are listed under /sys/firmware/qemu_fw_cfg/by_key, in folders
    named after each entry's selector key. Filename, selector value,
    and size read-only attributes are included for each entry. Also,
    a "raw" attribute allows retrieval of the full binary content of
    each entry.
    
    The fw_cfg device can be instantiated automatically from ACPI or
    the Device Tree, or manually by using a kernel module (or command
    line) parameter, with a syntax outlined in the documentation file.
    Signed-off-by: NGabriel Somlo <somlo@cmu.edu>
    Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    75f3e8e4
Kconfig 6.7 KB