Pass boot device list to firmware.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/vl.c b/vl.c
index 0d20d26180..c4d3fc0d3d 100644
--- a/vl.c
+++ b/vl.c
@@ -736,6 +736,54 @@ void add_boot_device_path(int32_t bootindex, DeviceState *dev,
     QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
 }
 
+/*
+ * This function returns null terminated string that consist of new line
+ * separated device pathes.
+ *
+ * memory pointed by "size" is assigned total length of the array in bytes
+ *
+ */
+char *get_boot_devices_list(uint32_t *size)
+{
+    FWBootEntry *i;
+    uint32_t total = 0;
+    char *list = NULL;
+
+    QTAILQ_FOREACH(i, &fw_boot_order, link) {
+        char *devpath = NULL, *bootpath;
+        int len;
+
+        if (i->dev) {
+            devpath = qdev_get_fw_dev_path(i->dev);
+            assert(devpath);
+        }
+
+        if (i->suffix && devpath) {
+            bootpath = qemu_malloc(strlen(devpath) + strlen(i->suffix) + 1);
+            sprintf(bootpath, "%s%s", devpath, i->suffix);
+            qemu_free(devpath);
+        } else if (devpath) {
+            bootpath = devpath;
+        } else {
+            bootpath = strdup(i->suffix);
+            assert(bootpath);
+        }
+
+        if (total) {
+            list[total-1] = '\n';
+        }
+        len = strlen(bootpath) + 1;
+        list = qemu_realloc(list, total + len);
+        memcpy(&list[total], bootpath, len);
+        total += len;
+        qemu_free(bootpath);
+    }
+
+    *size = total;
+
+    return list;
+}
+
 static void numa_add(const char *optarg)
 {
     char option[128];