sfc: Expose flash region storing boot code as MTD

The boot code that appears as a PCI expansion ROM on the SFC4000 is
stored in flash.  Expose this as a standard MTD device to allow for
in-place upgrades.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/net/sfc/Kconfig b/drivers/net/sfc/Kconfig
index 3be13b592b4d..3e25fb38f739 100644
--- a/drivers/net/sfc/Kconfig
+++ b/drivers/net/sfc/Kconfig
@@ -12,3 +12,11 @@ config SFC
 
           To compile this driver as a module, choose M here.  The module
           will be called sfc.
+config SFC_MTD
+        bool "Solarflare Solarstorm SFC4000 flash MTD support"
+        depends on SFC && MTD
+        default y
+        help
+          This exposes the on-board flash memory as an MTD device (e.g.
+          /dev/mtd1).  This makes it possible to upload new boot code
+          to the NIC.