From 3fcc4b656aeafc30221927806e9a3f641b9377f3 Mon Sep 17 00:00:00 2001
From: Chris Blake <chrisrblake93@gmail.com>
Date: Sun, 26 Feb 2017 04:04:51 -0600
Subject: [PATCH] kernel: Add TPM Module support

The following will enable the TPM kernel module, as well as support for
the atmel i2c TPM driver. Tested and confirmed working on an Aerohive
AP-121

Signed-off-by: Chris Blake <chrisrblake93@gmail.com>
---
 package/kernel/linux/modules/other.mk | 47 +++++++++++++++++++++++++++
 target/linux/generic/config-3.18      |  6 ++++
 target/linux/generic/config-4.4       |  6 ++++
 target/linux/generic/config-4.9       |  6 ++++
 4 files changed, 65 insertions(+)

diff --git a/package/kernel/linux/modules/other.mk b/package/kernel/linux/modules/other.mk
index b39a88be4d..3b2d2e9667 100644
--- a/package/kernel/linux/modules/other.mk
+++ b/package/kernel/linux/modules/other.mk
@@ -954,3 +954,50 @@ define KernelPackage/bmp085-spi/description
 endef
 
 $(eval $(call KernelPackage,bmp085-spi))
+
+define KernelPackage/tpm
+  SUBMENU:=$(OTHER_MENU)
+  TITLE:=TPM Hardware Support
+  KCONFIG:= CONFIG_TCG_TPM
+  FILES:= $(LINUX_DIR)/drivers/char/tpm/tpm.ko
+  AUTOLOAD:=$(call AutoLoad,10,tpm,1)
+endef
+
+define KernelPackage/tpm/description
+	This enables TPM Hardware Support.
+endef
+
+$(eval $(call KernelPackage,tpm))
+
+define KernelPackage/tpm-tis
+  SUBMENU:=$(OTHER_MENU)
+  TITLE:=TPM TIS 1.2 Interface / TPM 2.0 FIFO Interface
+	DEPENDS:= @TARGET_x86 +kmod-tpm
+  KCONFIG:= CONFIG_TCG_TIS
+  FILES:= $(LINUX_DIR)/drivers/char/tpm/tpm_tis.ko
+  AUTOLOAD:=$(call AutoLoad,20,tpm_tis,1)
+endef
+
+define KernelPackage/tpm-tis/description
+	If you have a TPM security chip that is compliant with the
+	TCG TIS 1.2 TPM specification (TPM1.2) or the TCG PTP FIFO
+	specification (TPM2.0) say Yes and it will be accessible from
+	within Linux.
+endef
+
+$(eval $(call KernelPackage,tpm-tis))
+
+define KernelPackage/tpm-i2c-atmel
+  SUBMENU:=$(OTHER_MENU)
+  TITLE:=TPM I2C Atmel Support
+  DEPENDS:= +kmod-tpm +kmod-i2c-core
+  KCONFIG:= CONFIG_TCG_TIS_I2C_ATMEL
+  FILES:= $(LINUX_DIR)/drivers/char/tpm/tpm_i2c_atmel.ko
+  AUTOLOAD:=$(call AutoLoad,40,tpm_i2c_atmel,1)
+endef
+
+define KernelPackage/tpm-i2c-atmel/description
+	This enables the TPM Interface Specification 1.2 Interface (I2C - Atmel)
+endef
+
+$(eval $(call KernelPackage,tpm-i2c-atmel))
diff --git a/target/linux/generic/config-3.18 b/target/linux/generic/config-3.18
index 8103cabce0..fd24004991 100644
--- a/target/linux/generic/config-3.18
+++ b/target/linux/generic/config-3.18
@@ -3884,6 +3884,12 @@ CONFIG_SYSVIPC_SYSCTL=y
 # CONFIG_TASKS_RCU is not set
 # CONFIG_TC35815 is not set
 # CONFIG_TCG_TPM is not set
+# CONFIG_TCG_TIS is not set
+# CONFIG_TCG_TIS_I2C_ATMEL is not set
+# CONFIG_TCG_TIS_I2C_INFINEON is not set
+# CONFIG_TCG_TIS_I2C_NUVOTON is not set
+# CONFIG_TCG_ATMEL is not set
+# CONFIG_TCG_TIS_ST33ZP24 is not set
 # CONFIG_TCIC is not set
 CONFIG_TCP_CONG_ADVANCED=y
 # CONFIG_TCP_CONG_BIC is not set
diff --git a/target/linux/generic/config-4.4 b/target/linux/generic/config-4.4
index e76359a8ae..021d8171c1 100644
--- a/target/linux/generic/config-4.4
+++ b/target/linux/generic/config-4.4
@@ -4077,6 +4077,12 @@ CONFIG_SYSVIPC_SYSCTL=y
 # CONFIG_TASKS_RCU is not set
 # CONFIG_TC35815 is not set
 # CONFIG_TCG_TPM is not set
+# CONFIG_TCG_TIS is not set
+# CONFIG_TCG_TIS_I2C_ATMEL is not set
+# CONFIG_TCG_TIS_I2C_INFINEON is not set
+# CONFIG_TCG_TIS_I2C_NUVOTON is not set
+# CONFIG_TCG_ATMEL is not set
+# CONFIG_TCG_TIS_ST33ZP24 is not set
 # CONFIG_TCIC is not set
 CONFIG_TCP_CONG_ADVANCED=y
 # CONFIG_TCP_CONG_BIC is not set
diff --git a/target/linux/generic/config-4.9 b/target/linux/generic/config-4.9
index e36d77c207..da9408b644 100644
--- a/target/linux/generic/config-4.9
+++ b/target/linux/generic/config-4.9
@@ -4394,6 +4394,12 @@ CONFIG_SYSVIPC_SYSCTL=y
 # CONFIG_TASK_XACCT is not set
 # CONFIG_TC35815 is not set
 # CONFIG_TCG_TPM is not set
+# CONFIG_TCG_TIS is not set
+# CONFIG_TCG_TIS_I2C_ATMEL is not set
+# CONFIG_TCG_TIS_I2C_INFINEON is not set
+# CONFIG_TCG_TIS_I2C_NUVOTON is not set
+# CONFIG_TCG_ATMEL is not set
+# CONFIG_TCG_TIS_ST33ZP24 is not set
 # CONFIG_TCIC is not set
 CONFIG_TCP_CONG_ADVANCED=y
 # CONFIG_TCP_CONG_BBR is not set