Re: [PATCH v2 07/11] hw/arm/virt: add plug handler for TPM on SysBus

[Stefan Berger]

On 7/14/23 03:09, Joelle van Dyne wrote:

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;

+static void virt_tpm_plug(LoongArchMachineState *lams, TPMIf *tpmif)
+{
+    PlatformBusDevice *pbus = PLATFORM_BUS_DEVICE(lams->platform_bus_dev);
+    hwaddr pbus_base = VIRT_PLATFORM_BUS_BASEADDRESS;

These seem to be the differences between the loongarch and the arm virt 
implementations.
Why not have a function with this signature that both archs can call?

static void virt_tpm_plug(PlatformBusDevice *pbus, hwaddr pbus_base, TPMIf 
*tpmif)

Regards,
   Stefan