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hw/uefi-vars-sysbus: qemu platform bus support

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Add and register function to create an device tree entry when
the device is added to the qemu platform bus.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20250225163031.1409078-20-kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2025-02-25 17:30:23 +01:00
parent 5bb89df2e3
commit 03223b665c
2 changed files with 25 additions and 0 deletions
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24
hw/core/sysbus-fdt.c
View file

@ -36,6 +36,7 @@
#include "hw/vfio/vfio-calxeda-xgmac.h"
#include "hw/vfio/vfio-amd-xgbe.h"
#include "hw/display/ramfb.h"
#include "hw/uefi/var-service-api.h"
#include "hw/arm/fdt.h"
/*
@ -471,6 +472,28 @@ static int add_tpm_tis_fdt_node(SysBusDevice *sbdev, void *opaque)
}
#endif
static int add_uefi_vars_node(SysBusDevice *sbdev, void *opaque)
{
PlatformBusFDTData *data = opaque;
PlatformBusDevice *pbus = data->pbus;
const char *parent_node = data->pbus_node_name;
void *fdt = data->fdt;
uint64_t mmio_base;
char *nodename;
mmio_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
nodename = g_strdup_printf("%s/%s@%" PRIx64, parent_node,
UEFI_VARS_FDT_NODE, mmio_base);
qemu_fdt_add_subnode(fdt, nodename);
qemu_fdt_setprop_string(fdt, nodename,
"compatible", UEFI_VARS_FDT_COMPAT);
qemu_fdt_setprop_sized_cells(fdt, nodename, "reg",
1, mmio_base,
1, UEFI_VARS_REGS_SIZE);
g_free(nodename);
return 0;
}
static int no_fdt_node(SysBusDevice *sbdev, void *opaque)
{
return 0;
@ -495,6 +518,7 @@ static const BindingEntry bindings[] = {
TYPE_BINDING(TYPE_TPM_TIS_SYSBUS, add_tpm_tis_fdt_node),
#endif
TYPE_BINDING(TYPE_RAMFB_DEVICE, no_fdt_node),
TYPE_BINDING(TYPE_UEFI_VARS_SYSBUS, add_uefi_vars_node),
TYPE_BINDING("", NULL), /* last element */
};

1
hw/uefi/var-service-sysbus.c
View file

@ -69,6 +69,7 @@ static void uefi_vars_sysbus_class_init(ObjectClass *klass, void *data)
dc->realize = uefi_vars_sysbus_realize;
dc->vmsd = &vmstate_uefi_vars_sysbus;
dc->user_creatable = true;
device_class_set_legacy_reset(dc, uefi_vars_sysbus_reset);
device_class_set_props(dc, uefi_vars_sysbus_properties);
set_bit(DEVICE_CATEGORY_MISC, dc->categories);