From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Tue, 20 Mar 2018 20:31:50 +0000 (-0400)
Subject: tpm: CRB: query backend for TPM established flag
X-Git-Tag: v2.12.0-rc1~20^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ffbf24bdb223914d5805fef15bfe9c4489868fad;p=thirdparty%2Fqemu.git

tpm: CRB: query backend for TPM established flag

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---

diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
index e8c42f6e3d4..ef8b80e9aa9 100644
--- a/hw/tpm/tpm_crb.c
+++ b/hw/tpm/tpm_crb.c
@@ -84,6 +84,12 @@ static uint64_t tpm_crb_mmio_read(void *opaque, hwaddr addr,
     unsigned offset = addr & 3;
     uint32_t val = *(uint32_t *)regs >> (8 * offset);
 
+    switch (addr) {
+    case A_CRB_LOC_STATE:
+        val |= !tpm_backend_get_tpm_established_flag(s->tpmbe);
+        break;
+    }
+
     trace_tpm_crb_mmio_read(addr, size, val);
 
     return val;