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spapr: tie spapr-nvram to -pflash

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spapr-nvram's drive property is currently connected to a non-existent
"-machine nvram=<drivename>" option.  Instead, tie it to -pflash like
other non-volatile RAM devices.  This provides the following possibilities
for adding a backend for the sPAPR non-volatile RAM:

* -pflash filename

* -drive if=pflash,file=filename,format=raw,...

* -drive if=none,file=filename,format=raw,id=foo,... -global spapr-nvram.drive=foo

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Paolo Bonzini 2013-11-22 10:27:40 +01:00 committed by Alexander Graf
parent 8a0e11045d
commit 3978b863a5
1 changed files with 3 additions and 11 deletions
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14
hw/ppc/spapr.c
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@ -739,18 +739,10 @@ static void spapr_cpu_reset(void *opaque)
static void spapr_create_nvram(sPAPREnvironment *spapr)
{
DeviceState *dev = qdev_create(&spapr->vio_bus->bus, "spapr-nvram");
const char *drivename = qemu_opt_get(qemu_get_machine_opts(), "nvram");
DriveInfo *dinfo = drive_get(IF_PFLASH, 0, 0);
if (drivename) {
BlockDriverState *bs;
bs = bdrv_find(drivename);
if (!bs) {
fprintf(stderr, "No such block device \"%s\" for nvram\n",
drivename);
exit(1);
}
qdev_prop_set_drive_nofail(dev, "drive", bs);
if (dinfo) {
qdev_prop_set_drive_nofail(dev, "drive", dinfo->bdrv);
}
qdev_init_nofail(dev);