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| author | Ankur Arora <ankur.a.arora@oracle.com> | 2021-03-11 22:26:49 -0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-03-16 13:21:46 +0000 |
| commit | 2d92e052c3afa0aaaa10430a9e2c864907b88079 (patch) | |
| tree | 100a658ff331674098d409e4859135f4c8202514 /OvmfPkg/CpuHotplugSmm/QemuCpuhp.c | |
| parent | a752dd07466c4f0bda5c14d001b096e778a44ad5 (diff) | |
| download | edk2-2d92e052c3afa0aaaa10430a9e2c864907b88079.tar.gz edk2-2d92e052c3afa0aaaa10430a9e2c864907b88079.tar.bz2 edk2-2d92e052c3afa0aaaa10430a9e2c864907b88079.zip | |
OvmfPkg/CpuHotplugSmm: add Qemu Cpu Status helper
Add QemuCpuhpWriteCpuStatus() which will be used to update the QEMU
CPU status register. On error, it hangs in a similar fashion as
other helper functions.
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Aaron Young <aaron.young@oracle.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=3132
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210312062656.2477515-4-ankur.a.arora@oracle.com>
Diffstat (limited to 'OvmfPkg/CpuHotplugSmm/QemuCpuhp.c')
| -rw-r--r-- | OvmfPkg/CpuHotplugSmm/QemuCpuhp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c b/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c index 8434dd446b..dc86ab9677 100644 --- a/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c +++ b/OvmfPkg/CpuHotplugSmm/QemuCpuhp.c @@ -114,6 +114,28 @@ QemuCpuhpWriteCpuSelector ( }
VOID
+QemuCpuhpWriteCpuStatus (
+ IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo,
+ IN UINT8 CpuStatus
+ )
+{
+ EFI_STATUS Status;
+
+ Status = MmCpuIo->Io.Write (
+ MmCpuIo,
+ MM_IO_UINT8,
+ ICH9_CPU_HOTPLUG_BASE + QEMU_CPUHP_R_CPU_STAT,
+ 1,
+ &CpuStatus
+ );
+ if (EFI_ERROR (Status)) {
+ DEBUG ((DEBUG_ERROR, "%a: %r\n", __FUNCTION__, Status));
+ ASSERT (FALSE);
+ CpuDeadLoop ();
+ }
+}
+
+VOID
QemuCpuhpWriteCommand (
IN CONST EFI_MM_CPU_IO_PROTOCOL *MmCpuIo,
IN UINT8 Command
|