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f2a1ae45d8
The WRITE_POINTER linker/loader command that underlies VMGENID depends on commitbaf2d5bfba("fw-cfg: support writeable blobs", 2017-01-12), which in turn depends on fw_cfg DMA. DMA for fw_cfg is enabled in 2.5+ machine types only (see commite6915b5f3a, "fw_cfg: unbreak migration compatibility for 2.4 and earlier machines", 2016-02-18). Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Ben Warren <ben@skyportsystems.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Ben Warren <ben@skyportsystems.com <mailto:ben@skyportsystems.com>> Reviewed-by: Igor Mammedov <imammedo@redhat.com>
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
#ifndef ACPI_VMGENID_H
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#define ACPI_VMGENID_H
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#include "hw/acpi/bios-linker-loader.h"
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#include "hw/qdev.h"
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#include "qemu/uuid.h"
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#define VMGENID_DEVICE "vmgenid"
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#define VMGENID_GUID "guid"
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#define VMGENID_GUID_FW_CFG_FILE "etc/vmgenid_guid"
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#define VMGENID_ADDR_FW_CFG_FILE "etc/vmgenid_addr"
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#define VMGENID_FW_CFG_SIZE 4096 /* Occupy a page of memory */
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#define VMGENID_GUID_OFFSET 40 /* allow space for
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* OVMF SDT Header Probe Supressor
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*/
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#define VMGENID(obj) OBJECT_CHECK(VmGenIdState, (obj), VMGENID_DEVICE)
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typedef struct VmGenIdState {
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DeviceClass parent_obj;
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QemuUUID guid; /* The 128-bit GUID seen by the guest */
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uint8_t vmgenid_addr_le[8]; /* Address of the GUID (little-endian) */
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bool write_pointer_available;
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} VmGenIdState;
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static inline Object *find_vmgenid_dev(void)
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{
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return object_resolve_path_type("", VMGENID_DEVICE, NULL);
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}
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void vmgenid_build_acpi(VmGenIdState *vms, GArray *table_data, GArray *guid,
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BIOSLinker *linker);
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void vmgenid_add_fw_cfg(VmGenIdState *vms, FWCfgState *s, GArray *guid);
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#endif
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