tpm: Add support for SPL and TPL

At present the tpm can only be used in U-Boot proper. Updated it to work
in SPL and TPL also.

Signed-off-by: Simon Glass <sjg@chromium.org>

drivers/tpm/Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0+
 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
 
-obj-$(CONFIG_TPM) += tpm-uclass.o
+obj-$(CONFIG_$(SPL_TPL_)TPM) += tpm-uclass.o
 
 obj-$(CONFIG_TPM_ATMEL_TWI) += tpm_atmel_twi.o
 obj-$(CONFIG_TPM_TIS_INFINEON) += tpm_tis_infineon.o

lib/Kconfig

@@ -185,6 +185,28 @@ config TPM
 	  for the low-level TPM interface, but only one TPM is supported at
 	  a time by the TPM library.
 
+config SPL_TPM
+	bool "Trusted Platform Module (TPM) Support in SPL"
+	depends on SPL_DM
+	help
+	  This enables support for TPMs which can be used to provide security
+	  features for your board. The TPM can be connected via LPC or I2C
+	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
+	  command to interactive the TPM. Driver model support is provided
+	  for the low-level TPM interface, but only one TPM is supported at
+	  a time by the TPM library.
+
+config TPL_TPM
+	bool "Trusted Platform Module (TPM) Support in TPL"
+	depends on TPL_DM
+	help
+	  This enables support for TPMs which can be used to provide security
+	  features for your board. The TPM can be connected via LPC or I2C
+	  and a sandbox TPM is provided for testing purposes. Use the 'tpm'
+	  command to interactive the TPM. Driver model support is provided
+	  for the low-level TPM interface, but only one TPM is supported at
+	  a time by the TPM library.
+
 endmenu
 
 menu "Android Verified Boot"

lib/Makefile

@@ -45,14 +45,18 @@ obj-$(CONFIG_PHYSMEM) += physmem.o
 obj-y += qsort.o
 obj-y += rc4.o
 obj-$(CONFIG_SUPPORT_EMMC_RPMB) += sha256.o
-obj-$(CONFIG_TPM) += tpm-common.o
-obj-$(CONFIG_TPM_V1) += tpm-v1.o
-obj-$(CONFIG_TPM_V2) += tpm-v2.o
 obj-$(CONFIG_RBTREE)	+= rbtree.o
 obj-$(CONFIG_BITREVERSE) += bitrev.o
 obj-y += list_sort.o
 endif
 
+obj-$(CONFIG_$(SPL_TPL_)TPM) += tpm-common.o
+ifeq ($(CONFIG_$(SPL_TPL_)TPM),y)
+obj-y += crc8.o
+obj-$(CONFIG_TPM_V1) += tpm-v1.o
+obj-$(CONFIG_TPM_V2) += tpm-v2.o
+endif
+
 obj-$(CONFIG_RSA) += rsa/
 obj-$(CONFIG_SHA1) += sha1.o
 obj-$(CONFIG_SHA256) += sha256.o