2 * QEMU Boot Device Implement
4 * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO.,LTD.
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7 * of this software and associated documentation files (the "Software"), to deal
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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
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18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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25 #include "sysemu/sysemu.h"
26 #include "qapi/visitor.h"
28 typedef struct FWBootEntry FWBootEntry;
31 QTAILQ_ENTRY(FWBootEntry) link;
37 static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
38 QTAILQ_HEAD_INITIALIZER(fw_boot_order);
40 void check_boot_index(int32_t bootindex, Error **errp)
45 QTAILQ_FOREACH(i, &fw_boot_order, link) {
46 if (i->bootindex == bootindex) {
47 error_setg(errp, "The bootindex %d has already been used",
55 void del_boot_device_path(DeviceState *dev, const char *suffix)
63 QTAILQ_FOREACH(i, &fw_boot_order, link) {
64 if ((!suffix || !g_strcmp0(i->suffix, suffix)) &&
66 QTAILQ_REMOVE(&fw_boot_order, i, link);
75 void add_boot_device_path(int32_t bootindex, DeviceState *dev,
78 FWBootEntry *node, *i;
81 del_boot_device_path(dev, suffix);
85 assert(dev != NULL || suffix != NULL);
87 del_boot_device_path(dev, suffix);
89 node = g_malloc0(sizeof(FWBootEntry));
90 node->bootindex = bootindex;
91 node->suffix = g_strdup(suffix);
94 QTAILQ_FOREACH(i, &fw_boot_order, link) {
95 if (i->bootindex == bootindex) {
96 fprintf(stderr, "Two devices with same boot index %d\n", bootindex);
98 } else if (i->bootindex < bootindex) {
101 QTAILQ_INSERT_BEFORE(i, node, link);
104 QTAILQ_INSERT_TAIL(&fw_boot_order, node, link);
107 DeviceState *get_boot_device(uint32_t position)
109 uint32_t counter = 0;
110 FWBootEntry *i = NULL;
111 DeviceState *res = NULL;
113 if (!QTAILQ_EMPTY(&fw_boot_order)) {
114 QTAILQ_FOREACH(i, &fw_boot_order, link) {
115 if (counter == position) {
126 * This function returns null terminated string that consist of new line
127 * separated device paths.
129 * memory pointed by "size" is assigned total length of the array in bytes
132 char *get_boot_devices_list(size_t *size, bool ignore_suffixes)
138 QTAILQ_FOREACH(i, &fw_boot_order, link) {
139 char *devpath = NULL, *bootpath;
143 devpath = qdev_get_fw_dev_path(i->dev);
147 if (i->suffix && !ignore_suffixes && devpath) {
148 size_t bootpathlen = strlen(devpath) + strlen(i->suffix) + 1;
150 bootpath = g_malloc(bootpathlen);
151 snprintf(bootpath, bootpathlen, "%s%s", devpath, i->suffix);
153 } else if (devpath) {
155 } else if (!ignore_suffixes) {
157 bootpath = g_strdup(i->suffix);
159 bootpath = g_strdup("");
163 list[total-1] = '\n';
165 len = strlen(bootpath) + 1;
166 list = g_realloc(list, total + len);
167 memcpy(&list[total], bootpath, len);
174 if (boot_strict && *size > 0) {
175 list[total-1] = '\n';
176 list = g_realloc(list, total + 5);
177 memcpy(&list[total], "HALT", 5);
189 static void device_get_bootindex(Object *obj, Visitor *v, void *opaque,
190 const char *name, Error **errp)
192 BootIndexProperty *prop = opaque;
193 visit_type_int32(v, prop->bootindex, name, errp);
196 static void device_set_bootindex(Object *obj, Visitor *v, void *opaque,
197 const char *name, Error **errp)
199 BootIndexProperty *prop = opaque;
201 Error *local_err = NULL;
203 visit_type_int32(v, &boot_index, name, &local_err);
207 /* check whether bootindex is present in fw_boot_order list */
208 check_boot_index(boot_index, &local_err);
212 /* change bootindex to a new one */
213 *prop->bootindex = boot_index;
215 add_boot_device_path(*prop->bootindex, prop->dev, prop->suffix);
219 error_propagate(errp, local_err);
223 static void property_release_bootindex(Object *obj, const char *name,
227 BootIndexProperty *prop = opaque;
229 del_boot_device_path(prop->dev, prop->suffix);
233 void device_add_bootindex_property(Object *obj, int32_t *bootindex,
234 const char *name, const char *suffix,
235 DeviceState *dev, Error **errp)
237 Error *local_err = NULL;
238 BootIndexProperty *prop = g_malloc0(sizeof(*prop));
240 prop->bootindex = bootindex;
241 prop->suffix = suffix;
244 object_property_add(obj, name, "int32",
245 device_get_bootindex,
246 device_set_bootindex,
247 property_release_bootindex,
251 error_propagate(errp, local_err);
255 /* initialize devices' bootindex property to -1 */
256 object_property_set_int(obj, -1, name, NULL);