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[PATCH v2 07/11] hw/arm/virt: add plug handler for TPM on SysBus
From: |
Joelle van Dyne |
Subject: |
[PATCH v2 07/11] hw/arm/virt: add plug handler for TPM on SysBus |
Date: |
Fri, 14 Jul 2023 00:09:23 -0700 |
TPM needs to know its own base address in order to generate its DSDT
device entry.
Signed-off-by: Joelle van Dyne <j@getutm.app>
---
hw/arm/virt.c | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 7d9dbc2663..432148ef47 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -2732,6 +2732,37 @@ static void virt_memory_plug(HotplugHandler *hotplug_dev,
dev, &error_abort);
}
+#ifdef CONFIG_TPM
+static void virt_tpm_plug(VirtMachineState *vms, TPMIf *tpmif)
+{
+ PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(vms->platform_bus_dev);
+ hwaddr pbus_base = vms->memmap[VIRT_PLATFORM_BUS].base;
+ SysBusDevice *sbdev = SYS_BUS_DEVICE(tpmif);
+ MemoryRegion *sbdev_mr;
+ hwaddr tpm_base;
+ uint64_t tpm_size;
+
+ if (!sbdev || !object_dynamic_cast(OBJECT(sbdev), TYPE_SYS_BUS_DEVICE)) {
+ return;
+ }
+
+ tpm_base = platform_bus_get_mmio_addr(pbus, sbdev, 0);
+ assert(tpm_base != -1);
+
+ tpm_base += pbus_base;
+
+ sbdev_mr = sysbus_mmio_get_region(sbdev, 0);
+ tpm_size = memory_region_size(sbdev_mr);
+
+ if (object_property_find(OBJECT(sbdev), "baseaddr")) {
+ object_property_set_uint(OBJECT(sbdev), "baseaddr", tpm_base, NULL);
+ }
+ if (object_property_find(OBJECT(sbdev), "size")) {
+ object_property_set_uint(OBJECT(sbdev), "size", tpm_size, NULL);
+ }
+}
+#endif
+
static void virt_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -2803,6 +2834,12 @@ static void virt_machine_device_plug_cb(HotplugHandler
*hotplug_dev,
vms->virtio_iommu_bdf = pci_get_bdf(pdev);
create_virtio_iommu_dt_bindings(vms);
}
+
+#ifdef CONFIG_TPM
+ if (object_dynamic_cast(OBJECT(dev), TYPE_TPM_IF)) {
+ virt_tpm_plug(vms, TPM_IF(dev));
+ }
+#endif
}
static void virt_dimm_unplug_request(HotplugHandler *hotplug_dev,
--
2.39.2 (Apple Git-143)
- [PATCH v2 07/11] hw/arm/virt: add plug handler for TPM on SysBus,
Joelle van Dyne <=