New SD card "image" property can be used to:
- change image file attached to virtual SD card
- hot-insert new image file into newly initialized BlockDriverState (this was
not
possible before).
Example usage:
./qom-set /machine/milkymist/milkymist-memcard/card.image /home/me/mynewcard.img
this will attach image file /home/me/mynewcard.img to virtual SD card connected
to
milkymist-memcard host controller device. If virtual card was already attached
to
some other image file, eject event is triggered before attaching new file.
Signed-off-by: Igor Mitsyanko <i.mitsya...@samsung.com>
---
hw/sd.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/hw/sd.c b/hw/sd.c
index 8ffaa17..3e75405 100644
--- a/hw/sd.c
+++ b/hw/sd.c
@@ -1816,6 +1816,48 @@ static void sd_set_spimode(Object *obj, Visitor *v, void
*opaque,
}
}
+static void sd_set_image_path(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ SDState *sd = SD_CARD(obj);
+ char *new_image;
+
+ visit_type_str(v, &new_image, "file", errp);
+
+ if (error_is_set(errp)) {
+ return;
+ }
+
+ if (sd->bdrv) {
+ qmp_change_blockdev(bdrv_get_device_name(sd->bdrv), new_image,
+ false, NULL, errp);
+ } else {
+ DriveInfo *di;
+ QemuOpts *opts = drive_add(IF_SD, sd->if_idx, new_image, "");
+
+ if (!opts) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, new_image);
+ return;
+ }
+
+ di = drive_init(opts, 0);
+ if (!di) {
+ error_set(errp, QERR_OPEN_FILE_FAILED, new_image);
+ return;
+ }
+
+ sd_reset(sd, di->bdrv);
+ if (bdrv_attach_dev(sd->bdrv, sd) < 0) {
+ drive_put_ref(di);
+ error_set(errp, QERR_OPEN_FILE_FAILED, new_image);
+ return;
+ }
+ bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd);
+ qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv));
+ qemu_set_irq(sd->readonly_cb, sd->wp_switch);
+ }
+}
+
static void sd_initfn(Object *obj)
{
SDState *sd = SD_CARD(obj);
@@ -1826,6 +1868,8 @@ static void sd_initfn(Object *obj)
NULL, NULL, NULL);
object_property_add(obj, "spi-mode", "boolean", sd_is_spi, sd_set_spimode,
NULL, NULL, NULL);
+ object_property_add(OBJECT(sd), "image", "string",
+ NULL, sd_set_image_path, NULL, NULL, NULL);
}
static TypeInfo sd_type_info = {
--
1.7.4.1
