board/qemu/aarch64-virt/linux.config: enable QEMU firmware configuration (fw_cfg)

>From [1]:
This kernel option allow exporting of the QEMU firmware configuration (fw_cfg)
file entries via sysfs. Entries are found under /sys/firmware/fw_cfg when this
option is enabled and loaded.

Enable the suboption to allow the qemu_fw_cfg device to be initialized via the
kernel command line or using a module parameter.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/firmware/Kconfig?h=v5.4.42#n187

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

diff --git a/board/qemu/aarch64-virt/linux.config b/board/qemu/aarch64-virt/linux.config
index 129a200ab09c5b91582162b683756abc3eae8722..c21994076aa700fd24abc5c1d70dc40cfd733077 100644 (file)
--- a/board/qemu/aarch64-virt/linux.config
+++ b/board/qemu/aarch64-virt/linux.config
@@ -7,6 +7,8 @@ CONFIG_SCHED_AUTOGROUP=y
 CONFIG_PROFILING=y
 CONFIG_ARCH_VEXPRESS=y
 CONFIG_COMPAT=y
+CONFIG_FW_CFG_SYSFS=y
+CONFIG_FW_CFG_SYSFS_CMDLINE=y
 CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_BLK_DEV_BSGLIB=y