2 * QEMU Boot Device Implement
4 * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO.,LTD.
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 #include "sysemu/sysemu.h"
26 #include "qapi/visitor.h"
27 #include "qemu/error-report.h"
29 typedef struct FWBootEntry FWBootEntry;
32 QTAILQ_ENTRY(FWBootEntry) link;
38 static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
39 QTAILQ_HEAD_INITIALIZER(fw_boot_order);
41 void check_boot_index(int32_t bootindex, Error **errp)
46 QTAILQ_FOREACH(i, &fw_boot_order, link) {
47 if (i->bootindex == bootindex) {
48 error_setg(errp, "The bootindex %d has already been used",
56 void del_boot_device_path(DeviceState *dev, const char *suffix)
64 QTAILQ_FOREACH(i, &fw_boot_order, link) {
65 if ((!suffix || !g_strcmp0(i->suffix, suffix)) &&
67 QTAILQ_REMOVE(&fw_boot_order, i, link);
76 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
79 FWBootEntry *node, *i;
82 del_boot_device_path(dev, suffix);
86 assert(dev != NULL || suffix != NULL);
88 del_boot_device_path(dev, suffix);
90 node = g_malloc0(sizeof(FWBootEntry));
91 node->bootindex = bootindex;
92 node->suffix = g_strdup(suffix);
95 QTAILQ_FOREACH(i, &fw_boot_order, link) {
96 if (i->bootindex == bootindex) {
97 error_report("Two devices with same boot index %d", bootindex);
99 } else if (i->bootindex < bootindex) {
102 QTAILQ_INSERT_BEFORE(i, node, link);
105 QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
108 DeviceState *get_boot_device(uint32_t position)
110 uint32_t counter = 0;
111 FWBootEntry *i = NULL;
112 DeviceState *res = NULL;
114 if (!QTAILQ_EMPTY(&fw_boot_order)) {
115 QTAILQ_FOREACH(i, &fw_boot_order, link) {
116 if (counter == position) {
127 * This function returns null terminated string that consist of new line
128 * separated device paths.
130 * memory pointed by "size" is assigned total length of the array in bytes
133 char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
139 QTAILQ_FOREACH(i, &fw_boot_order, link) {
140 char *devpath = NULL, *bootpath;
144 devpath = qdev_get_fw_dev_path(i->dev);
148 if (i->suffix && !ignore_suffixes && devpath) {
149 size_t bootpathlen = strlen(devpath) + strlen(i->suffix) + 1;
151 bootpath = g_malloc(bootpathlen);
152 snprintf(bootpath, bootpathlen, "%s%s", devpath, i->suffix);
154 } else if (devpath) {
156 } else if (!ignore_suffixes) {
158 bootpath = g_strdup(i->suffix);
160 bootpath = g_strdup("");
164 list[total-1] = '\n';
166 len = strlen(bootpath) + 1;
167 list = g_realloc(list, total + len);
168 memcpy(&list[total], bootpath, len);
175 if (boot_strict && *size > 0) {
176 list[total-1] = '\n';
177 list = g_realloc(list, total + 5);
178 memcpy(&list[total], "HALT", 5);
190 static void device_get_bootindex(Object *obj, Visitor *v, void *opaque,
191 const char *name, Error **errp)
193 BootIndexProperty *prop = opaque;
194 visit_type_int32(v, prop->bootindex, name, errp);
197 static void device_set_bootindex(Object *obj, Visitor *v, void *opaque,
198 const char *name, Error **errp)
200 BootIndexProperty *prop = opaque;
202 Error *local_err = NULL;
204 visit_type_int32(v, &boot_index, name, &local_err);
208 /* check whether bootindex is present in fw_boot_order list */
209 check_boot_index(boot_index, &local_err);
213 /* change bootindex to a new one */
214 *prop->bootindex = boot_index;
216 add_boot_device_path(*prop->bootindex, prop->dev, prop->suffix);
220 error_propagate(errp, local_err);
224 static void property_release_bootindex(Object *obj, const char *name,
228 BootIndexProperty *prop = opaque;
230 del_boot_device_path(prop->dev, prop->suffix);
234 void device_add_bootindex_property(Object *obj, int32_t *bootindex,
235 const char *name, const char *suffix,
236 DeviceState *dev, Error **errp)
238 Error *local_err = NULL;
239 BootIndexProperty *prop = g_malloc0(sizeof(*prop));
241 prop->bootindex = bootindex;
242 prop->suffix = suffix;
245 object_property_add(obj, name, "int32",
246 device_get_bootindex,
247 device_set_bootindex,
248 property_release_bootindex,
252 error_propagate(errp, local_err);
256 /* initialize devices' bootindex property to -1 */
257 object_property_set_int(obj, -1, name, NULL);