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authorGonglei <arei.gonglei@huawei.com>2014-10-07 16:00:05 +0800
committerGerd Hoffmann <kraxel@redhat.com>2014-10-15 09:49:48 +0200
commitbc74112f7e857a662b1802145ca4cb9230de2f5c (patch)
tree62403075f0355c97212e640ae08c91a0ce2c283b /bootdevice.c
parentb1d28ec6a7dbdaadda39d29322f0de694aeb0b74 (diff)
downloadqemu-arm-bc74112f7e857a662b1802145ca4cb9230de2f5c.tar.gz
bootdevice: move bootdevice related code to new file bootdevice.c
Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'bootdevice.c')
-rw-r--r--bootdevice.c142
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;
+}