From ffbf24bdb223914d5805fef15bfe9c4489868fad Mon Sep 17 00:00:00 2001
From: Stefan Berger <stefanb@linux.vnet.ibm.com>
Date: Tue, 20 Mar 2018 16:31:50 -0400
Subject: tpm: CRB: query backend for TPM established flag
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Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 hw/tpm/tpm_crb.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
index e8c42f6e3d..ef8b80e9aa 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;
-- 
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