diff mbox

[v2,4/4] tpm: CRB: query backend for TPM established flag

Message ID 1521579171-26213-5-git-send-email-stefanb@linux.vnet.ibm.com (mailing list archive)
State New, archived
Headers show

Commit Message

Stefan Berger March 20, 2018, 8:52 p.m. UTC 
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
---
 hw/tpm/tpm_crb.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/hw/tpm/tpm_crb.c b/hw/tpm/tpm_crb.c
index e8c42f6..ef8b80e 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;