gnu: Add ovmf-i686.

* gnu/packages/firmware.scm (ovmf-i686): New variable.

Change-Id: Ie5702435695e24ed1d2731152a89b0aeb9a050dd

gnu/packages/firmware.scm

@@ -1016,6 +1016,28 @@ Virtual Machines.  OVMF contains a sample UEFI firmware for QEMU and KVM.")
                              "OVMF_CODE"
                              "OVMF_VARS"))))))))))))
 
+(define-public ovmf-i686
+  (let ((base (make-ovmf-firmware "i686")))
+    (package
+      (inherit base)
+      (arguments
+        (substitute-keyword-arguments (package-arguments base)
+          ((#:phases phases)
+           #~(modify-phases #$phases
+               (replace 'install
+                 (lambda _
+                   (let ((fmw (string-append #$output "/share/firmware")))
+                     (mkdir-p fmw)
+                     (for-each
+                       (lambda (file)
+                         (copy-file
+                           (string-append "Build/OvmfIa32/RELEASE_GCC"
+                                          "/FV/" file ".fd")
+                           (string-append fmw "/" (string-downcase file) "_ia32.bin")))
+                       (list "OVMF"
+                             "OVMF_CODE"
+                             "OVMF_VARS"))))))))))))
+
 (define-public ovmf
   (let ((toolchain-ver "GCC5"))
     (package