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[libvirt] [PATCH v4 1/3] conf: Extend <loader/> and introduce <nvram/>



Up to now, users can configure BIOS via the <loader/> element. With
the upcoming implementation of UEFI this is not enough as BIOS and
UEFI are conceptually different. For instance, while BIOS is ROM, UEFI
is programmable flash (although all writes to code section are
denied). Therefore we need new attribute @type which will
differentiate the two. Then, new attribute @readonly is introduced to
reflect the fact that some images are RO.

Moreover, the OVMF (which is going to be used mostly), works in two
modes:
1) Code and UEFI variable store is mixed in one file.
2) Code and UEFI variable store is separated in two files

The latter has advantage of updating the UEFI code without losing the
configuration. However, in order to represent the latter case we need
yet another XML element: <nvram/>. Currently, it has no additional
attributes, it's just a bare element containing path to the variable
store file.

Signed-off-by: Michal Privoznik <mprivozn redhat com>
---
 docs/formatdomain.html.in                          | 19 ++++-
 docs/schemas/domaincommon.rng                      | 21 ++++++
 src/conf/domain_conf.c                             | 87 +++++++++++++++++++++-
 src/conf/domain_conf.h                             | 22 +++++-
 src/libvirt_private.syms                           |  3 +
 src/qemu/qemu_command.c                            |  5 +-
 src/security/virt-aa-helper.c                      |  4 +-
 src/vbox/vbox_common.c                             |  7 +-
 src/xenapi/xenapi_driver.c                         |  3 +-
 src/xenconfig/xen_common.c                         |  7 +-
 src/xenconfig/xen_sxpr.c                           | 16 ++--
 tests/qemuxml2argvdata/qemuxml2argv-bios-nvram.xml | 40 ++++++++++
 .../qemuxml2xmlout-pci-bridge-many-disks.xml       |  2 +-
 tests/qemuxml2xmltest.c                            |  2 +
 tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml      |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml  |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml    |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml  |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml        |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-legacy-vfb.xml    |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml     |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-net-ioemu.xml     |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml  |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml  |  2 +-
 .../sexpr2xml-fv-serial-dev-2-ports.xml            |  2 +-
 .../sexpr2xml-fv-serial-dev-2nd-port.xml           |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml   |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml   |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml   |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml    |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml  |  2 +-
 .../sexpr2xml-fv-serial-tcp-telnet.xml             |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml    |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml    |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml   |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml     |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-sound.xml         |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml      |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml     |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-utc.xml           |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv-v2.xml            |  2 +-
 tests/sexpr2xmldata/sexpr2xml-fv.xml               |  2 +-
 tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml  |  2 +-
 tests/xmconfigdata/test-escape-paths.xml           |  2 +-
 tests/xmconfigdata/test-fullvirt-force-hpet.xml    |  2 +-
 tests/xmconfigdata/test-fullvirt-force-nohpet.xml  |  2 +-
 tests/xmconfigdata/test-fullvirt-localtime.xml     |  2 +-
 tests/xmconfigdata/test-fullvirt-net-ioemu.xml     |  2 +-
 tests/xmconfigdata/test-fullvirt-net-netfront.xml  |  2 +-
 tests/xmconfigdata/test-fullvirt-new-cdrom.xml     |  2 +-
 tests/xmconfigdata/test-fullvirt-old-cdrom.xml     |  2 +-
 tests/xmconfigdata/test-fullvirt-parallel-tcp.xml  |  2 +-
 .../test-fullvirt-serial-dev-2-ports.xml           |  2 +-
 .../test-fullvirt-serial-dev-2nd-port.xml          |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-file.xml   |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-null.xml   |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-pipe.xml   |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-pty.xml    |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-stdio.xml  |  2 +-
 .../test-fullvirt-serial-tcp-telnet.xml            |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-tcp.xml    |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-udp.xml    |  2 +-
 tests/xmconfigdata/test-fullvirt-serial-unix.xml   |  2 +-
 tests/xmconfigdata/test-fullvirt-sound.xml         |  2 +-
 tests/xmconfigdata/test-fullvirt-usbmouse.xml      |  2 +-
 tests/xmconfigdata/test-fullvirt-usbtablet.xml     |  2 +-
 tests/xmconfigdata/test-fullvirt-utc.xml           |  2 +-
 tests/xmconfigdata/test-no-source-cdrom.xml        |  2 +-
 tests/xmconfigdata/test-pci-devs.xml               |  2 +-
 69 files changed, 269 insertions(+), 79 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-bios-nvram.xml

diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index ed17389..589ca0a 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -102,7 +102,8 @@
   ...
   &lt;os&gt;
     &lt;type&gt;hvm&lt;/type&gt;
-    &lt;loader&gt;/usr/lib/xen/boot/hvmloader&lt;/loader&gt;
+    &lt;loader readonly='on' type='rom'&gt;/usr/lib/xen/boot/hvmloader&lt;/loader&gt;
+    &lt;nvram&gt;/var/lib/libvirt/nvram/guest_VARS.fd&lt;/nvram&gt;
     &lt;boot dev='hd'/&gt;
     &lt;boot dev='cdrom'/&gt;
     &lt;bootmenu enable='yes'/&gt;
@@ -129,7 +130,21 @@
         used to assist the domain creation process. It is used by Xen
         fully virtualized domains as well as setting the QEMU BIOS file
         path for QEMU/KVM domains. <span class="since">Xen since 0.1.0,
-        QEMU/KVM since 0.9.12</span></dd>
+        QEMU/KVM since 0.9.12</span> Then, <span class="since">Since
+        1.2.8</span> it's possible for the element to have two
+        optional attributes: <code>readonly</code> (accepted values are
+        <code>on</code> and <code>off</code>) to reflect the fact that the
+        image should be writable or read-only. The second attribute
+        <code>type</code> accepts values <code>rom</code> and
+        <code>pflash</code>. It tells the hypervisor where in the guest
+        memory the file should be mapped.  For instance, if the loader
+        path points to an UEFI image, <code>type</code> should be
+        <code>pflash</code>.</dd>
+      <dt><code>nvram</code></dt>
+      <dd>Some UEFI firmwares may want to use a non-volatile memory to store
+        some variables. In the host, this is represented as a file and the
+        path to the file is stored in this element. <span class="since">Since
+        1.2.8</span></dd>
       <dt><code>boot</code></dt>
       <dd>The <code>dev</code> attribute takes one of the values "fd", "hd",
         "cdrom" or "network" and is used to specify the next boot device
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 033f2f6..69fce46 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -242,6 +242,27 @@
       <interleave>
         <optional>
           <element name="loader">
+            <optional>
+              <attribute name="readonly">
+                <choice>
+                  <value>on</value>
+                  <value>off</value>
+                </choice>
+              </attribute>
+            </optional>
+            <optional>
+              <attribute name="type">
+                <choice>
+                  <value>rom</value>
+                  <value>pflash</value>
+                </choice>
+              </attribute>
+            </optional>
+            <ref name="absFilePath"/>
+          </element>
+        </optional>
+        <optional>
+          <element name="nvram">
             <ref name="absFilePath"/>
           </element>
         </optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 9557020..1ed7315 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -759,6 +759,11 @@ VIR_ENUM_IMPL(virDomainDiskMirrorState, VIR_DOMAIN_DISK_MIRROR_STATE_LAST,
               "abort",
               "pivot")
 
+VIR_ENUM_IMPL(virDomainLoader,
+              VIR_DOMAIN_LOADER_TYPE_LAST,
+              "rom",
+              "pflash")
+
 /* Internal mapping: subset of block job types that can be present in
  * <mirror> XML (remaining types are not two-phase). */
 VIR_ENUM_DECL(virDomainBlockJob)
@@ -1992,6 +1997,17 @@ virDomainPanicDefFree(virDomainPanicDefPtr panic)
     VIR_FREE(panic);
 }
 
+void
+virDomainLoaderDefFree(virDomainLoaderDefPtr loader)
+{
+    if (!loader)
+        return;
+
+    VIR_FREE(loader->path);
+    VIR_FREE(loader->nvram);
+    VIR_FREE(loader);
+}
+
 void virDomainDefFree(virDomainDefPtr def)
 {
     size_t i;
@@ -2097,7 +2113,7 @@ void virDomainDefFree(virDomainDefPtr def)
     VIR_FREE(def->os.cmdline);
     VIR_FREE(def->os.dtb);
     VIR_FREE(def->os.root);
-    VIR_FREE(def->os.loader);
+    virDomainLoaderDefFree(def->os.loader);
     VIR_FREE(def->os.bootloader);
     VIR_FREE(def->os.bootloaderArgs);
 
@@ -11581,6 +11597,42 @@ virDomainDefMaybeAddHostdevSCSIcontroller(virDomainDefPtr def)
     return 0;
 }
 
+static int
+virDomainLoaderDefParseXML(xmlNodePtr node,
+                           virDomainLoaderDefPtr loader)
+{
+    int ret = -1;
+    char *readonly_str = NULL;
+    char *type_str = NULL;
+
+    readonly_str = virXMLPropString(node, "readonly");
+    type_str = virXMLPropString(node, "type");
+    loader->path = (char *) xmlNodeGetContent(node);
+
+    if (readonly_str &&
+        (loader->readonly = virTristateSwitchTypeFromString(readonly_str)) <= 0) {
+        virReportError(VIR_ERR_XML_DETAIL,
+                       _("unknown readonly value: %s"), readonly_str);
+        goto cleanup;
+    }
+
+    if (type_str) {
+        int type;
+        if ((type = virDomainLoaderTypeFromString(type_str)) < 0) {
+            virReportError(VIR_ERR_XML_DETAIL,
+                           _("unknown type value: %s"), type_str);
+            goto cleanup;
+        }
+        loader->type = type;
+    }
+
+    ret = 0;
+ cleanup:
+    VIR_FREE(readonly_str);
+    VIR_FREE(type_str);
+    return ret;
+}
+
 static virDomainDefPtr
 virDomainDefParseXML(xmlDocPtr xml,
                      xmlNodePtr root,
@@ -12558,12 +12610,22 @@ virDomainDefParseXML(xmlDocPtr xml,
     if (STREQ(def->os.type, "xen") ||
         STREQ(def->os.type, "hvm") ||
         STREQ(def->os.type, "uml")) {
+        xmlNodePtr loader_node;
+
         def->os.kernel = virXPathString("string(./os/kernel[1])", ctxt);
         def->os.initrd = virXPathString("string(./os/initrd[1])", ctxt);
         def->os.cmdline = virXPathString("string(./os/cmdline[1])", ctxt);
         def->os.dtb = virXPathString("string(./os/dtb[1])", ctxt);
         def->os.root = virXPathString("string(./os/root[1])", ctxt);
-        def->os.loader = virXPathString("string(./os/loader[1])", ctxt);
+        if ((loader_node = virXPathNode("./os/loader[1]", ctxt))) {
+            if (VIR_ALLOC(def->os.loader) < 0)
+                goto error;
+
+            if (virDomainLoaderDefParseXML(loader_node, def->os.loader) < 0)
+                goto error;
+
+            def->os.loader->nvram = virXPathString("string(./os/nvram[1])", ctxt);
+        }
     }
 
     if (STREQ(def->os.type, "hvm")) {
@@ -17605,6 +17667,23 @@ virDomainHugepagesFormat(virBufferPtr buf,
     virBufferAddLit(buf, "</hugepages>\n");
 }
 
+static void
+virDomainLoaderDefFormat(virBufferPtr buf,
+                         virDomainLoaderDefPtr loader)
+{
+    const char *readonly = virTristateSwitchTypeToString(loader->readonly);
+    const char *type = virDomainLoaderTypeToString(loader->type);
+
+    virBufferAddLit(buf, "<loader");
+
+    if (loader->readonly)
+        virBufferAsprintf(buf, " readonly='%s'", readonly);
+
+    virBufferAsprintf(buf, " type='%s'>", type);
+
+    virBufferEscapeString(buf, "%s</loader>\n", loader->path);
+    virBufferEscapeString(buf, "<nvram>%s</nvram>\n", loader->nvram);
+}
 
 #define DUMPXML_FLAGS                           \
     (VIR_DOMAIN_XML_SECURE |                    \
@@ -17934,8 +18013,8 @@ virDomainDefFormatInternal(virDomainDefPtr def,
     for (i = 0; def->os.initargv && def->os.initargv[i]; i++)
         virBufferEscapeString(buf, "<initarg>%s</initarg>\n",
                               def->os.initargv[i]);
-    virBufferEscapeString(buf, "<loader>%s</loader>\n",
-                          def->os.loader);
+    if (def->os.loader)
+        virDomainLoaderDefFormat(buf, def->os.loader);
     virBufferEscapeString(buf, "<kernel>%s</kernel>\n",
                           def->os.kernel);
     virBufferEscapeString(buf, "<initrd>%s</initrd>\n",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index f2df4eb..3f26423 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -1620,6 +1620,26 @@ struct _virDomainBIOSDef {
     int rt_delay;
 };
 
+typedef enum {
+    VIR_DOMAIN_LOADER_TYPE_ROM = 0,
+    VIR_DOMAIN_LOADER_TYPE_PFLASH,
+
+    VIR_DOMAIN_LOADER_TYPE_LAST
+} virDomainLoader;
+
+VIR_ENUM_DECL(virDomainLoader)
+
+typedef struct _virDomainLoaderDef virDomainLoaderDef;
+typedef virDomainLoaderDef *virDomainLoaderDefPtr;
+struct _virDomainLoaderDef {
+    char *path;
+    int readonly; /* enum virTristateSwitch */
+    virDomainLoader type;
+    char *nvram;    /* path to non-volatile RAM */
+};
+
+void virDomainLoaderDefFree(virDomainLoaderDefPtr loader);
+
 /* Operating system configuration data & machine / arch */
 typedef struct _virDomainOSDef virDomainOSDef;
 typedef virDomainOSDef *virDomainOSDefPtr;
@@ -1637,7 +1657,7 @@ struct _virDomainOSDef {
     char *cmdline;
     char *dtb;
     char *root;
-    char *loader;
+    virDomainLoaderDefPtr loader;
     char *bootloader;
     char *bootloaderArgs;
     int smbios_mode;
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 08111d4..dd4c46f 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -312,6 +312,9 @@ virDomainLifecycleCrashTypeToString;
 virDomainLifecycleTypeFromString;
 virDomainLifecycleTypeToString;
 virDomainLiveConfigHelperMethod;
+virDomainLoaderDefFree;
+virDomainLoaderTypeFromString;
+virDomainLoaderTypeToString;
 virDomainLockFailureTypeFromString;
 virDomainLockFailureTypeToString;
 virDomainMemballoonModelTypeFromString;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 903dafd..d03c4d5 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7439,7 +7439,7 @@ qemuBuildCommandLine(virConnectPtr conn,
 
     if (def->os.loader) {
         virCommandAddArg(cmd, "-bios");
-        virCommandAddArg(cmd, def->os.loader);
+        virCommandAddArg(cmd, def->os.loader->path);
     }
 
     /* Set '-m MB' based on maxmem, because the lower 'memory' limit
@@ -11229,7 +11229,8 @@ qemuParseCommandLine(virCapsPtr qemuCaps,
                 goto error;
         } else if (STREQ(arg, "-bios")) {
             WANT_VALUE();
-            if (VIR_STRDUP(def->os.loader, val) < 0)
+            if (VIR_ALLOC(def->os.loader) < 0 ||
+                VIR_STRDUP(def->os.loader->path, val) < 0)
                 goto error;
         } else if (STREQ(arg, "-initrd")) {
             WANT_VALUE();
diff --git a/src/security/virt-aa-helper.c b/src/security/virt-aa-helper.c
index a0b104c..311ce3b 100644
--- a/src/security/virt-aa-helper.c
+++ b/src/security/virt-aa-helper.c
@@ -1006,8 +1006,8 @@ get_files(vahControl * ctl)
         if (vah_add_file(&buf, ctl->def->os.dtb, "r") != 0)
             goto cleanup;
 
-    if (ctl->def->os.loader && ctl->def->os.loader)
-        if (vah_add_file(&buf, ctl->def->os.loader, "r") != 0)
+    if (ctl->def->os.loader && ctl->def->os.loader->path)
+        if (vah_add_file(&buf, ctl->def->os.loader->path, "r") != 0)
             goto cleanup;
 
     for (i = 0; i < ctl->def->ngraphics; i++) {
diff --git a/src/vbox/vbox_common.c b/src/vbox/vbox_common.c
index b186ea8..6f56c59 100644
--- a/src/vbox/vbox_common.c
+++ b/src/vbox/vbox_common.c
@@ -988,7 +988,12 @@ vboxSetBootDeviceOrder(virDomainDefPtr def, vboxGlobalData *data,
     VIR_DEBUG("def->os.initrd           %s", def->os.initrd);
     VIR_DEBUG("def->os.cmdline          %s", def->os.cmdline);
     VIR_DEBUG("def->os.root             %s", def->os.root);
-    VIR_DEBUG("def->os.loader           %s", def->os.loader);
+    if (def->os.loader) {
+        VIR_DEBUG("def->os.loader->path     %s", def->os.loader->path);
+        VIR_DEBUG("def->os.loader->readonly %d", def->os.loader->readonly);
+        VIR_DEBUG("def->os.loader->type     %d", def->os.loader->type);
+        VIR_DEBUG("def->os.loader->nvram    %s", def->os.loader->nvram);
+    }
     VIR_DEBUG("def->os.bootloader       %s", def->os.bootloader);
     VIR_DEBUG("def->os.bootloaderArgs   %s", def->os.bootloaderArgs);
 
diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c
index 50331c9..a6eaccc 100644
--- a/src/xenapi/xenapi_driver.c
+++ b/src/xenapi/xenapi_driver.c
@@ -1427,7 +1427,8 @@ xenapiDomainGetXMLDesc(virDomainPtr dom, unsigned int flags)
             VIR_FREE(boot_policy);
             goto error;
         }
-        if (VIR_STRDUP(defPtr->os.loader, "pygrub") < 0) {
+        if (VIR_ALLOC(defPtr->os.loader) < 0 ||
+            VIR_STRDUP(defPtr->os.loader->path, "pygrub") < 0) {
             VIR_FREE(boot_policy);
             goto error;
         }
diff --git a/src/xenconfig/xen_common.c b/src/xenconfig/xen_common.c
index 398e9ec..df74c41 100644
--- a/src/xenconfig/xen_common.c
+++ b/src/xenconfig/xen_common.c
@@ -1065,7 +1065,8 @@ xenParseOS(virConfPtr conf, virDomainDefPtr def)
     if (STREQ(def->os.type, "hvm")) {
         const char *boot;
 
-       if (xenConfigCopyString(conf, "kernel", &def->os.loader) < 0)
+        if (VIR_ALLOC(def->os.loader) < 0 ||
+            xenConfigCopyString(conf, "kernel", &def->os.loader->path) < 0)
             return -1;
 
         if (xenConfigGetString(conf, "boot", &boot, "c") < 0)
@@ -1740,8 +1741,8 @@ xenFormatOS(virConfPtr conf, virDomainDefPtr def)
         if (xenXMConfigSetString(conf, "builder", "hvm") < 0)
             return -1;
 
-        if (def->os.loader &&
-            xenXMConfigSetString(conf, "kernel", def->os.loader) < 0)
+        if (def->os.loader && def->os.loader->path &&
+            xenXMConfigSetString(conf, "kernel", def->os.loader->path) < 0)
             return -1;
 
         for (i = 0; i < def->os.nBootDevs; i++) {
diff --git a/src/xenconfig/xen_sxpr.c b/src/xenconfig/xen_sxpr.c
index ff81c36..e8b9f59 100644
--- a/src/xenconfig/xen_sxpr.c
+++ b/src/xenconfig/xen_sxpr.c
@@ -93,13 +93,15 @@ xenParseSxprOS(const struct sexpr *node,
                int hvm)
 {
     if (hvm) {
-        if (sexpr_node_copy(node, "domain/image/hvm/loader", &def->os.loader) < 0)
+        if (VIR_ALLOC(def->os.loader) < 0)
             goto error;
-        if (def->os.loader == NULL) {
-            if (sexpr_node_copy(node, "domain/image/hvm/kernel", &def->os.loader) < 0)
+        if (sexpr_node_copy(node, "domain/image/hvm/loader", &def->os.loader->path) < 0)
+            goto error;
+        if (def->os.loader->path == NULL) {
+            if (sexpr_node_copy(node, "domain/image/hvm/kernel", &def->os.loader->path) < 0)
                 goto error;
 
-            if (def->os.loader == NULL) {
+            if (def->os.loader->path == NULL) {
                 virReportError(VIR_ERR_INTERNAL_ERROR,
                                "%s", _("domain information incomplete, missing HVM loader"));
                 return -1;
@@ -128,7 +130,7 @@ xenParseSxprOS(const struct sexpr *node,
     /* If HVM kenrel == loader, then old xend, so kill off kernel */
     if (hvm &&
         def->os.kernel &&
-        STREQ(def->os.kernel, def->os.loader)) {
+        STREQ(def->os.kernel, def->os.loader->path)) {
         VIR_FREE(def->os.kernel);
     }
     /* Drop kernel argument that has no value */
@@ -2279,9 +2281,9 @@ xenFormatSxpr(virConnectPtr conn,
         if (hvm) {
             char bootorder[VIR_DOMAIN_BOOT_LAST+1];
             if (def->os.kernel)
-                virBufferEscapeSexpr(&buf, "(loader '%s')", def->os.loader);
+                virBufferEscapeSexpr(&buf, "(loader '%s')", def->os.loader->path);
             else
-                virBufferEscapeSexpr(&buf, "(kernel '%s')", def->os.loader);
+                virBufferEscapeSexpr(&buf, "(kernel '%s')", def->os.loader->path);
 
             virBufferAsprintf(&buf, "(vcpus %u)", def->maxvcpus);
             if (def->vcpus < def->maxvcpus)
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-bios-nvram.xml b/tests/qemuxml2argvdata/qemuxml2argv-bios-nvram.xml
new file mode 100644
index 0000000..b11ee0a
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-bios-nvram.xml
@@ -0,0 +1,40 @@
+<domain type='qemu'>
+  <name>test-bios</name>
+  <uuid>362d1fc1-df7d-193e-5c18-49a71bd1da66</uuid>
+  <memory unit='KiB'>1048576</memory>
+  <currentMemory unit='KiB'>1048576</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <loader readonly='on' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
+    <nvram>/usr/share/OVMF/OVMF_VARS.fd</nvram>
+    <boot dev='hd'/>
+    <bootmenu enable='yes'/>
+  </os>
+  <features>
+    <acpi/>
+  </features>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>restart</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu</emulator>
+    <disk type='block' device='disk'>
+      <source dev='/dev/HostVG/QEMUGuest1'/>
+      <target dev='hda' bus='ide'/>
+      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+    </disk>
+    <controller type='usb' index='0'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <serial type='pty'>
+      <target port='0'/>
+    </serial>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='tablet' bus='usb'/>
+    <memballoon model='virtio'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pci-bridge-many-disks.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pci-bridge-many-disks.xml
index d469b8b..d49f5f4 100644
--- a/tests/qemuxml2xmloutdata/qemuxml2xmlout-pci-bridge-many-disks.xml
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-pci-bridge-many-disks.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='x86_64' machine='pc-i440fx-1.4'>hvm</type>
-    <loader>/usr/share/seabios/bios.bin</loader>
+    <loader type='rom'>/usr/share/seabios/bios.bin</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 5941323..673aa87 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -388,6 +388,8 @@ mymain(void)
     DO_TEST_DIFFERENT("numatune-memnode");
     DO_TEST("numatune-memnode-no-memory");
 
+    DO_TEST("bios-nvram");
+
     virObjectUnref(driver.caps);
     virObjectUnref(driver.xmlopt);
 
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml b/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml
index 69fe9ef..761952c 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-autoport.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml b/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml
index 3c3147d..2898098 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-empty-kernel.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml b/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml
index 716f16b..a0fe30d 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-force-hpet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml b/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml
index 3dd648b..851797d 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-force-nohpet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml b/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml
index 29c1335..09cfe19 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-kernel.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>2</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <kernel>/var/lib/xen/vmlinuz.2Dn2YT</kernel>
     <initrd>/var/lib/xen/initrd.img.0u-Vhq</initrd>
     <cmdline> method=http://download.fedora.devel.redhat.com/pub/fedora/linux/core/test/5.91/x86_64/os  </cmdline>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-legacy-vfb.xml b/tests/sexpr2xmldata/sexpr2xml-fv-legacy-vfb.xml
index 9c59644..44c0f61 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-legacy-vfb.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-legacy-vfb.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml b/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml
index 67b0b95..29007f0 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-localtime.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-net-ioemu.xml b/tests/sexpr2xmldata/sexpr2xml-fv-net-ioemu.xml
index 86b32e9..3dbc999 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-net-ioemu.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-net-ioemu.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml b/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml
index ed7da80..d96350e 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-net-netfront.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml b/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml
index ed3fde6..7ad377c 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-parallel-tcp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml
index 7f5a729..adba6cb 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2-ports.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml
index 10f84dc..b6c3601 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-dev-2nd-port.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml
index a3fd231..dabe679 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-file.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml
index b3f77c9..fb19d74 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-null.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml
index e217161..5aa425b 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pipe.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml
index 3ad2264..3c2ca21 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-pty.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml
index 001df56..160edbd 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-stdio.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml
index c2496fd..4396efc 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp-telnet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml
index 6dc047e..3d17b58 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-tcp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml
index 7ccaeac..fc3d457 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-udp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml b/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml
index b5ad413..14b54f1 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-serial-unix.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml b/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml
index 7183e79..912df56 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-sound-all.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml b/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml
index 7183e79..912df56 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-sound.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml b/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml
index ae90e33..19eac3b 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-usbmouse.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml b/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml
index f81c47a..40ac8a9 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-usbtablet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml b/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml
index c783d93..97f2beb 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-utc.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml b/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml
index bd3b107..493d1b5 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv-v2.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-fv.xml b/tests/sexpr2xmldata/sexpr2xml-fv.xml
index c783d93..97f2beb 100644
--- a/tests/sexpr2xmldata/sexpr2xml-fv.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-fv.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml b/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml
index 00d18ce..a3cd7be 100644
--- a/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml
+++ b/tests/sexpr2xmldata/sexpr2xml-no-source-cdrom.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-escape-paths.xml b/tests/xmconfigdata/test-escape-paths.xml
index de3a7e2..623eaa1 100644
--- a/tests/xmconfigdata/test-escape-paths.xml
+++ b/tests/xmconfigdata/test-escape-paths.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader&amp;test</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader&amp;test</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-force-hpet.xml b/tests/xmconfigdata/test-fullvirt-force-hpet.xml
index 75f8724..57a6531 100644
--- a/tests/xmconfigdata/test-fullvirt-force-hpet.xml
+++ b/tests/xmconfigdata/test-fullvirt-force-hpet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-force-nohpet.xml b/tests/xmconfigdata/test-fullvirt-force-nohpet.xml
index e5741b6..f6ebcf6 100644
--- a/tests/xmconfigdata/test-fullvirt-force-nohpet.xml
+++ b/tests/xmconfigdata/test-fullvirt-force-nohpet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-localtime.xml b/tests/xmconfigdata/test-fullvirt-localtime.xml
index 8b97e5b..36ab389 100644
--- a/tests/xmconfigdata/test-fullvirt-localtime.xml
+++ b/tests/xmconfigdata/test-fullvirt-localtime.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-net-ioemu.xml b/tests/xmconfigdata/test-fullvirt-net-ioemu.xml
index f22c085..3618bae 100644
--- a/tests/xmconfigdata/test-fullvirt-net-ioemu.xml
+++ b/tests/xmconfigdata/test-fullvirt-net-ioemu.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-net-netfront.xml b/tests/xmconfigdata/test-fullvirt-net-netfront.xml
index 177bb6a..6a2a439 100644
--- a/tests/xmconfigdata/test-fullvirt-net-netfront.xml
+++ b/tests/xmconfigdata/test-fullvirt-net-netfront.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-new-cdrom.xml b/tests/xmconfigdata/test-fullvirt-new-cdrom.xml
index f22c085..3618bae 100644
--- a/tests/xmconfigdata/test-fullvirt-new-cdrom.xml
+++ b/tests/xmconfigdata/test-fullvirt-new-cdrom.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-old-cdrom.xml b/tests/xmconfigdata/test-fullvirt-old-cdrom.xml
index a592630..7d6014d 100644
--- a/tests/xmconfigdata/test-fullvirt-old-cdrom.xml
+++ b/tests/xmconfigdata/test-fullvirt-old-cdrom.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml b/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml
index 738e5ab..9b1fd26 100644
--- a/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml
+++ b/tests/xmconfigdata/test-fullvirt-parallel-tcp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-dev-2-ports.xml b/tests/xmconfigdata/test-fullvirt-serial-dev-2-ports.xml
index 753831a..a64d40b 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-dev-2-ports.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-dev-2-ports.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-dev-2nd-port.xml b/tests/xmconfigdata/test-fullvirt-serial-dev-2nd-port.xml
index 1a55080..ce2cddb 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-dev-2nd-port.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-dev-2nd-port.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-file.xml b/tests/xmconfigdata/test-fullvirt-serial-file.xml
index 0d2ac79..36883de 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-file.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-file.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-null.xml b/tests/xmconfigdata/test-fullvirt-serial-null.xml
index d4b4ae9..982f9d6 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-null.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-null.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-pipe.xml b/tests/xmconfigdata/test-fullvirt-serial-pipe.xml
index 6596dfc..82a1d9b 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-pipe.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-pipe.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-pty.xml b/tests/xmconfigdata/test-fullvirt-serial-pty.xml
index 6c55abb..56ccbea 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-pty.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-pty.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-stdio.xml b/tests/xmconfigdata/test-fullvirt-serial-stdio.xml
index 461f143..e2e9330 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-stdio.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-stdio.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml b/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml
index d2fa7bf..d68d77c 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-tcp-telnet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-tcp.xml b/tests/xmconfigdata/test-fullvirt-serial-tcp.xml
index 60ab8bd..aa3ed5c 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-tcp.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-tcp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-udp.xml b/tests/xmconfigdata/test-fullvirt-serial-udp.xml
index 6c21cd2..256c722 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-udp.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-udp.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-serial-unix.xml b/tests/xmconfigdata/test-fullvirt-serial-unix.xml
index f21534e..235c8d4 100644
--- a/tests/xmconfigdata/test-fullvirt-serial-unix.xml
+++ b/tests/xmconfigdata/test-fullvirt-serial-unix.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-sound.xml b/tests/xmconfigdata/test-fullvirt-sound.xml
index f09c16d..1429d10 100644
--- a/tests/xmconfigdata/test-fullvirt-sound.xml
+++ b/tests/xmconfigdata/test-fullvirt-sound.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-usbmouse.xml b/tests/xmconfigdata/test-fullvirt-usbmouse.xml
index 18a7ff0..25857f1 100644
--- a/tests/xmconfigdata/test-fullvirt-usbmouse.xml
+++ b/tests/xmconfigdata/test-fullvirt-usbmouse.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-usbtablet.xml b/tests/xmconfigdata/test-fullvirt-usbtablet.xml
index 5cbb007..31b1176 100644
--- a/tests/xmconfigdata/test-fullvirt-usbtablet.xml
+++ b/tests/xmconfigdata/test-fullvirt-usbtablet.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-fullvirt-utc.xml b/tests/xmconfigdata/test-fullvirt-utc.xml
index f22c085..3618bae 100644
--- a/tests/xmconfigdata/test-fullvirt-utc.xml
+++ b/tests/xmconfigdata/test-fullvirt-utc.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='cdrom'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-no-source-cdrom.xml b/tests/xmconfigdata/test-no-source-cdrom.xml
index 2a457b2..74f1be1 100644
--- a/tests/xmconfigdata/test-no-source-cdrom.xml
+++ b/tests/xmconfigdata/test-no-source-cdrom.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
diff --git a/tests/xmconfigdata/test-pci-devs.xml b/tests/xmconfigdata/test-pci-devs.xml
index f828056..1911734 100644
--- a/tests/xmconfigdata/test-pci-devs.xml
+++ b/tests/xmconfigdata/test-pci-devs.xml
@@ -6,7 +6,7 @@
   <vcpu placement='static'>1</vcpu>
   <os>
     <type arch='i686' machine='xenfv'>hvm</type>
-    <loader>/usr/lib/xen/boot/hvmloader</loader>
+    <loader type='rom'>/usr/lib/xen/boot/hvmloader</loader>
     <boot dev='hd'/>
   </os>
   <features>
-- 
1.8.5.5


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