1 files changed, 142 insertions, 0 deletions
diff --git a/bootdevice.c b/bootdevice.c
new file mode 100644
index 0000000000..d5b8789994
--- /dev/null
+++ b/bootdevice.c
@@ -0,0 +1,142 @@
+/*
+ * QEMU Boot Device Implement
+ *
+ * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO.,LTD.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "sysemu/sysemu.h"
+
+typedef struct FWBootEntry FWBootEntry;
+
+struct FWBootEntry {
+    QTAILQ_ENTRY(FWBootEntry) link;
+    int32_t bootindex;
+    DeviceState *dev;
+    char *suffix;
+};
+
+static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
+    QTAILQ_HEAD_INITIALIZER(fw_boot_order);
+
+void add_boot_device_path(int32_t bootindex, DeviceState *dev,
+                          const char *suffix)
+{
+    FWBootEntry *node, *i;
+
+    if (bootindex < 0) {
+        return;
+    }
+
+    assert(dev != NULL || suffix != NULL);
+
+    node = g_malloc0(sizeof(FWBootEntry));
+    node->bootindex = bootindex;
+    node->suffix = g_strdup(suffix);
+    node->dev = dev;
+
+    QTAILQ_FOREACH(i, &fw_boot_order, link) {
+        if (i->bootindex == bootindex) {
+            fprintf(stderr, "Two devices with same boot index %d\n", bootindex);
+            exit(1);
+        } else if (i->bootindex < bootindex) {
+            continue;
+        }
+        QTAILQ_INSERT_BEFORE(i, node, link);
+        return;
+    }
+    QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
+}
+
+DeviceState *get_boot_device(uint32_t position)
+{
+    uint32_t counter = 0;
+    FWBootEntry *i = NULL;
+    DeviceState *res = NULL;
+
+    if (!QTAILQ_EMPTY(&fw_boot_order)) {
+        QTAILQ_FOREACH(i, &fw_boot_order, link) {
+            if (counter == position) {
+                res = i->dev;
+                break;
+            }
+            counter++;
+        }
+    }
+    return res;
+}
+
+/*
+ * This function returns null terminated string that consist of new line
+ * separated device paths.
+ *
+ * memory pointed by "size" is assigned total length of the array in bytes
+ *
+ */
+char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
+{
+    FWBootEntry *i;
+    size_t total = 0;
+    char *list = NULL;
+
+    QTAILQ_FOREACH(i, &fw_boot_order, link) {
+        char *devpath = NULL, *bootpath;
+        size_t len;
+
+        if (i->dev) {
+            devpath = qdev_get_fw_dev_path(i->dev);
+            assert(devpath);
+        }
+
+        if (i->suffix && !ignore_suffixes && devpath) {
+            size_t bootpathlen = strlen(devpath) + strlen(i->suffix) + 1;
+
+            bootpath = g_malloc(bootpathlen);
+            snprintf(bootpath, bootpathlen, "%s%s", devpath, i->suffix);
+            g_free(devpath);
+        } else if (devpath) {
+            bootpath = devpath;
+        } else if (!ignore_suffixes) {
+            assert(i->suffix);
+            bootpath = g_strdup(i->suffix);
+        } else {
+            bootpath = g_strdup("");
+        }
+
+        if (total) {
+            list[total-1] = '\n';
+        }
+        len = strlen(bootpath) + 1;
+        list = g_realloc(list, total + len);
+        memcpy(&list[total], bootpath, len);
+        total += len;
+        g_free(bootpath);
+    }
+
+    *size = total;
+
+    if (boot_strict && *size > 0) {
+        list[total-1] = '\n';
+        list = g_realloc(list, total + 5);
+        memcpy(&list[total], "HALT", 5);
+        *size = total + 5;
+    }
+    return list;
+}