Signed-off-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
---
drivers/char/tpm/tpm.h | 2 ++
drivers/char/tpm/tpm2-cmd.c | 67 ++++++++++++++++++++++-----------------------
2 files changed, 35 insertions(+), 34 deletions(-)
diff --git a/drivers/char/tpm/tpm.h b/drivers/char/tpm/tpm.h
index 52d805f..2661c26 100644
--- a/drivers/char/tpm/tpm.h
+++ b/drivers/char/tpm/tpm.h
@@ -551,6 +551,8 @@ static inline void tpm_add_ppi(struct tpm_chip *chip)
int tpm2_pcr_read(struct tpm_chip *chip, int pcr_idx, u8 *res_buf);
int tpm2_pcr_extend(struct tpm_chip *chip, int pcr_idx, const u8 *hash);
int tpm2_get_random(struct tpm_chip *chip, u8 *out, size_t max);
+void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
+ unsigned int flags);
int tpm2_seal_trusted(struct tpm_chip *chip,
struct trusted_key_payload *payload,
struct trusted_key_options *options);
diff --git a/drivers/char/tpm/tpm2-cmd.c b/drivers/char/tpm/tpm2-cmd.c
index 3dce7b7..fd73e2a 100644
--- a/drivers/char/tpm/tpm2-cmd.c
+++ b/drivers/char/tpm/tpm2-cmd.c
@@ -415,6 +415,38 @@ static const struct tpm_input_header
tpm2_get_tpm_pt_header = {
};
/**
+ * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
+ * @chip: TPM chip to use
+ * @payload: the key data in clear and encrypted form
+ * @options: authentication values and other options
+ *
+ * Return: same as with tpm_transmit_cmd
+ */
+void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
+ unsigned int flags)
+{
+ struct tpm_buf buf;
+ int rc;
+
+ rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT);
+ if (rc) {
+ dev_warn(&chip->dev, "0x%08x was not flushed, out of memory\n",
+ handle);
+ return;
+ }
+
+ tpm_buf_append_u32(&buf, handle);
+
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, TPM_HEADER_SIZE, flags,
+ "flushing context");
+ if (rc)
+ dev_warn(&chip->dev, "0x%08x was not flushed, rc=%d\n", handle,
+ rc);
+
+ tpm_buf_destroy(&buf);
+}
+
+/**
* tpm_buf_append_auth() - append TPMS_AUTH_COMMAND to the buffer.
*
* @buf: an allocated tpm_buf instance
@@ -625,39 +657,6 @@ static int tpm2_load_cmd(struct tpm_chip *chip,
}
/**
- * tpm2_flush_context_cmd() - execute a TPM2_FlushContext command
- *
- * @chip: TPM chip to use
- * @handle: the key data in clear and encrypted form
- * @flags: tpm transmit flags
- *
- * Return: Same as with tpm_transmit_cmd.
- */
-static void tpm2_flush_context_cmd(struct tpm_chip *chip, u32 handle,
- unsigned int flags)
-{
- struct tpm_buf buf;
- int rc;
-
- rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT);
- if (rc) {
- dev_warn(&chip->dev, "0x%08x was not flushed, out of memory\n",
- handle);
- return;
- }
-
- tpm_buf_append_u32(&buf, handle);
-
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, TPM_HEADER_SIZE,
- flags, "flushing context");
- if (rc)
- dev_warn(&chip->dev, "0x%08x was not flushed, rc=%d\n", handle,
- rc);
-
- tpm_buf_destroy(&buf);
-}
-
-/**
* tpm2_unseal_cmd() - execute a TPM2_Unload command
*
* @chip: TPM chip to use
@@ -1047,7 +1046,7 @@ int tpm2_auto_startup(struct tpm_chip *chip)
tpm_buf_append_u32(&buf, TPM2_CC_FIRST);
tpm_buf_append_u32(&buf, nr_commands);
- rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, 0, NULL);
+ rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, TPM_HEADER_SIZE, 0,
NULL);
if (rc < 0) {
tpm_buf_destroy(&buf);
goto out;
--
2.9.3
------------------------------------------------------------------------------
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