diff --git a/README.experimental b/README.experimental
new file mode 100644
index 0000000..0859237
--- /dev/null
+++ b/README.experimental
@@ -0,0 +1,36 @@
+
+experimental edk2 builds
+------------------------
+
+OVMF.stateless.fd
+OVMF.stateless.secboot.fd
+OVMF.stateless.secboot.pcr
+
+  Stateless (== no persistent uefi variables) ovmf build.  Has secure
+  boot support, the 'secboot' variant has secure boot enabled.  Does
+  not require SMM support.
+
+OVMF_CODE.4m.secboot.strictnx.fd
+
+  OVMF build with strict NX configuration (using r-x for code, rw- for
+  data).  Known to not work with some grub and linux kernel versions
+  because they use the wrong memory type for allocations and run into
+  NX faults.  Useful for bootloader development and CI.
+
+QEMU_EFI.strictnx.fd
+QEMU_EFI-strictnx-pflash.raw
+
+  ArmVirt build with strict NX configuration (see above for details).
+
+QEMU_EFI.secboot.testonly.fd
+QEMU_EFI-secboot-testonly-pflash.raw
+vars-template-secboot-testonly-pflash.raw
+
+  ArmVirt build with secure boot support.
+
+  Exposes the secure boot APIs, so they can be used for development /
+  testing / CI.
+
+  The EFI variable store is NOT protected, therefore the build is NOT
+  suitable for production use.
+
diff --git a/edk2.spec b/edk2.spec
index d75dc00..7106967 100644
--- a/edk2.spec
+++ b/edk2.spec
@@ -58,6 +58,7 @@ Source2: openssl-rhel-%{OPENSSL_COMMIT}.tar.xz
 Source3: softfloat-%{softfloat_version}.tar.xz
 Source4: edk2-platforms-%{PLATFORMS_COMMIT}.tar.xz
 Source5: jansson-2.13.1.tar.bz2
+Source6: README.experimental
 
 # json description files
 Source10: 50-edk2-aarch64-qcow2.json
@@ -308,6 +309,7 @@ mkdir -p MdePkg/Library/MipiSysTLib/mipisyst/library/include
 chmod -Rf a+rX,u+w,g-w,o-w .
 
 cp -a -- \
+   %{SOURCE6} \
    %{SOURCE10} %{SOURCE11} %{SOURCE12} %{SOURCE13} \
    %{SOURCE20} \
    %{SOURCE30} %{SOURCE31} %{SOURCE32} \
@@ -692,6 +694,7 @@ done
 
 %files experimental
 %common_files
+%doc README.experimental
 %dir %{_datadir}/%{name}/experimental
 %{_datadir}/%{name}/experimental/*.fd
 %{_datadir}/%{name}/experimental/*.raw