/*
* QEMU Boot Device Implement
*
- * Copyright (c) 2014 HUAWEI TECHNOLOGIES CO.,LTD.
+ * 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
* THE SOFTWARE.
*/
+#include "qemu/osdep.h"
+#include "qapi/error.h"
#include "sysemu/sysemu.h"
+#include "qapi/visitor.h"
+#include "qemu/error-report.h"
+#include "sysemu/reset.h"
+#include "hw/qdev-core.h"
typedef struct FWBootEntry FWBootEntry;
static QTAILQ_HEAD(, FWBootEntry) fw_boot_order =
QTAILQ_HEAD_INITIALIZER(fw_boot_order);
+static QEMUBootSetHandler *boot_set_handler;
+static void *boot_set_opaque;
+
+void qemu_register_boot_set(QEMUBootSetHandler *func, void *opaque)
+{
+ boot_set_handler = func;
+ boot_set_opaque = opaque;
+}
+
+void qemu_boot_set(const char *boot_order, Error **errp)
+{
+ Error *local_err = NULL;
+
+ if (!boot_set_handler) {
+ error_setg(errp, "no function defined to set boot device list for"
+ " this architecture");
+ return;
+ }
+
+ validate_bootdevices(boot_order, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ return;
+ }
+
+ boot_set_handler(boot_set_opaque, boot_order, errp);
+}
+
+void validate_bootdevices(const char *devices, Error **errp)
+{
+ /* We just do some generic consistency checks */
+ const char *p;
+ int bitmap = 0;
+
+ for (p = devices; *p != '\0'; p++) {
+ /* Allowed boot devices are:
+ * a-b: floppy disk drives
+ * c-f: IDE disk drives
+ * g-m: machine implementation dependent drives
+ * n-p: network devices
+ * It's up to each machine implementation to check if the given boot
+ * devices match the actual hardware implementation and firmware
+ * features.
+ */
+ if (*p < 'a' || *p > 'p') {
+ error_setg(errp, "Invalid boot device '%c'", *p);
+ return;
+ }
+ if (bitmap & (1 << (*p - 'a'))) {
+ error_setg(errp, "Boot device '%c' was given twice", *p);
+ return;
+ }
+ bitmap |= 1 << (*p - 'a');
+ }
+}
+
+void restore_boot_order(void *opaque)
+{
+ char *normal_boot_order = opaque;
+ static int first = 1;
+
+ /* Restore boot order and remove ourselves after the first boot */
+ if (first) {
+ first = 0;
+ return;
+ }
+
+ if (boot_set_handler) {
+ qemu_boot_set(normal_boot_order, &error_abort);
+ }
+
+ qemu_unregister_reset(restore_boot_order, normal_boot_order);
+ g_free(normal_boot_order);
+}
+
+void check_boot_index(int32_t bootindex, Error **errp)
+{
+ FWBootEntry *i;
+
+ if (bootindex >= 0) {
+ QTAILQ_FOREACH(i, &fw_boot_order, link) {
+ if (i->bootindex == bootindex) {
+ error_setg(errp, "The bootindex %d has already been used",
+ bootindex);
+ return;
+ }
+ }
+ }
+}
+
+void del_boot_device_path(DeviceState *dev, const char *suffix)
+{
+ FWBootEntry *i;
+
+ if (dev == NULL) {
+ return;
+ }
+
+ QTAILQ_FOREACH(i, &fw_boot_order, link) {
+ if ((!suffix || !g_strcmp0(i->suffix, suffix)) &&
+ i->dev == dev) {
+ QTAILQ_REMOVE(&fw_boot_order, i, link);
+ g_free(i->suffix);
+ g_free(i);
+
+ break;
+ }
+ }
+}
void add_boot_device_path(int32_t bootindex, DeviceState *dev,
const char *suffix)
FWBootEntry *node, *i;
if (bootindex < 0) {
+ del_boot_device_path(dev, suffix);
return;
}
assert(dev != NULL || suffix != NULL);
+ del_boot_device_path(dev, suffix);
+
node = g_malloc0(sizeof(FWBootEntry));
node->bootindex = bootindex;
node->suffix = g_strdup(suffix);
QTAILQ_FOREACH(i, &fw_boot_order, link) {
if (i->bootindex == bootindex) {
- fprintf(stderr, "Two devices with same boot index %d\n", bootindex);
+ error_report("Two devices with same boot index %d", bootindex);
exit(1);
} else if (i->bootindex < bootindex) {
continue;
char *list = NULL;
QTAILQ_FOREACH(i, &fw_boot_order, link) {
- char *devpath = NULL, *bootpath;
+ char *devpath = NULL, *suffix = NULL;
+ char *bootpath;
+ char *d;
size_t len;
if (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 (!ignore_suffixes) {
+ if (i->dev) {
+ d = qdev_get_own_fw_dev_path_from_handler(i->dev->parent_bus,
+ i->dev);
+ if (d) {
+ assert(!i->suffix);
+ suffix = d;
+ } else {
+ suffix = g_strdup(i->suffix);
+ }
+ } else {
+ suffix = g_strdup(i->suffix);
+ }
}
+ bootpath = g_strdup_printf("%s%s",
+ devpath ? devpath : "",
+ suffix ? suffix : "");
+ g_free(devpath);
+ g_free(suffix);
+
if (total) {
list[total-1] = '\n';
}
}
return list;
}
+
+typedef struct {
+ int32_t *bootindex;
+ const char *suffix;
+ DeviceState *dev;
+} BootIndexProperty;
+
+static void device_get_bootindex(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ BootIndexProperty *prop = opaque;
+ visit_type_int32(v, name, prop->bootindex, errp);
+}
+
+static void device_set_bootindex(Object *obj, Visitor *v, const char *name,
+ void *opaque, Error **errp)
+{
+ BootIndexProperty *prop = opaque;
+ int32_t boot_index;
+ Error *local_err = NULL;
+
+ visit_type_int32(v, name, &boot_index, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ /* check whether bootindex is present in fw_boot_order list */
+ check_boot_index(boot_index, &local_err);
+ if (local_err) {
+ goto out;
+ }
+ /* change bootindex to a new one */
+ *prop->bootindex = boot_index;
+
+ add_boot_device_path(*prop->bootindex, prop->dev, prop->suffix);
+
+out:
+ error_propagate(errp, local_err);
+}
+
+static void property_release_bootindex(Object *obj, const char *name,
+ void *opaque)
+
+{
+ BootIndexProperty *prop = opaque;
+
+ del_boot_device_path(prop->dev, prop->suffix);
+ g_free(prop);
+}
+
+void device_add_bootindex_property(Object *obj, int32_t *bootindex,
+ const char *name, const char *suffix,
+ DeviceState *dev, Error **errp)
+{
+ Error *local_err = NULL;
+ BootIndexProperty *prop = g_malloc0(sizeof(*prop));
+
+ prop->bootindex = bootindex;
+ prop->suffix = suffix;
+ prop->dev = dev;
+
+ object_property_add(obj, name, "int32",
+ device_get_bootindex,
+ device_set_bootindex,
+ property_release_bootindex,
+ prop, &local_err);
+
+ if (local_err) {
+ error_propagate(errp, local_err);
+ g_free(prop);
+ return;
+ }
+ /* initialize devices' bootindex property to -1 */
+ object_property_set_int(obj, -1, name, NULL);
+}
projects / qemu.git / blobdiff