feat(tpm): add tpm drivers and framework
Add tpm2 drivers to tf-a with adequate framework
-implement a fifo spi interface that works
with discrete tpm chip.
-implement tpm command layer interfaces that are used
to initialize, start and make measurements and
close the interface.
-tpm drivers are built using their own make file
to allow for ease in porting across platforms,
and across different interfaces.
Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
Signed-off-by: Abhi Singh <abhi.singh@arm.com>
Change-Id: Ie1a189f45c80f26f4dea16c3bd71b1503709e0ea
diff --git a/drivers/tpm/tpm2_chip.c b/drivers/tpm/tpm2_chip.c
new file mode 100644
index 0000000..537ce92
--- /dev/null
+++ b/drivers/tpm/tpm2_chip.c
@@ -0,0 +1,21 @@
+
+/*
+ * Copyright (c) 2025, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <drivers/tpm/tpm2_chip.h>
+
+/*
+ * TPM timeout values
+ * Reference: TCG PC Client Platform TPM Profile (PTP) Specification v1.05
+ */
+struct tpm_chip_data tpm_chip_data = {
+ .locality = -1,
+ .timeout_msec_a = 750,
+ .timeout_msec_b = 2000,
+ .timeout_msec_c = 200,
+ .timeout_msec_d = 30,
+ .address = 0,
+};