verified-boot: Minimal support for booting U-Boot proper from SPL
This allows a board to configure verified boot within the SPL using
a FIT or FIT with external data. It also allows the SPL to perform
signature verification without needing relocation.
The board configuration will need to add the following feature defines:
CONFIG_SPL_CRYPTO_SUPPORT
CONFIG_SPL_HASH_SUPPORT
CONFIG_SPL_SHA256
In this example, SHA256 is the only selected hashing algorithm.
And the following booleans:
CONFIG_SPL=y
CONFIG_SPL_DM=y
CONFIG_SPL_LOAD_FIT=y
CONFIG_SPL_FIT=y
CONFIG_SPL_OF_CONTROL=y
CONFIG_SPL_OF_LIBFDT=y
CONFIG_SPL_FIT_SIGNATURE=y
Signed-off-by: Teddy Reed <teddy.reed@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
Acked-by: Andreas Dannenberg <dannenberg@ti.com>
Acked-by: Sumit Garg <sumit.garg@nxp.com>
diff --git a/lib/Makefile b/lib/Makefile
index f77befe..f48d901 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -9,7 +9,6 @@
obj-$(CONFIG_EFI) += efi/
obj-$(CONFIG_EFI_LOADER) += efi_loader/
-obj-$(CONFIG_RSA) += rsa/
obj-$(CONFIG_LZMA) += lzma/
obj-$(CONFIG_LZO) += lzo/
obj-$(CONFIG_ZLIB) += zlib/
@@ -25,8 +24,6 @@
obj-y += crc16.o
obj-$(CONFIG_ERRNO_STR) += errno_str.o
obj-$(CONFIG_FIT) += fdtdec_common.o
-obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec_common.o
-obj-$(CONFIG_$(SPL_)OF_CONTROL) += fdtdec.o
obj-$(CONFIG_TEST_FDTDEC) += fdtdec_test.o
obj-$(CONFIG_GZIP) += gunzip.o
obj-$(CONFIG_GZIP_COMPRESSED) += gzip.o
@@ -39,15 +36,17 @@
obj-$(CONFIG_PHYSMEM) += physmem.o
obj-y += qsort.o
obj-y += rc4.o
-obj-$(CONFIG_SHA1) += sha1.o
obj-$(CONFIG_SUPPORT_EMMC_RPMB) += sha256.o
-obj-$(CONFIG_SHA256) += sha256.o
obj-$(CONFIG_TPM) += tpm.o
obj-$(CONFIG_RBTREE) += rbtree.o
obj-$(CONFIG_BITREVERSE) += bitrev.o
obj-y += list_sort.o
endif
+obj-$(CONFIG_$(SPL_)RSA) += rsa/
+obj-$(CONFIG_$(SPL_)SHA1) += sha1.o
+obj-$(CONFIG_$(SPL_)SHA256) += sha256.o
+
obj-$(CONFIG_$(SPL_)OF_LIBFDT) += libfdt/
ifdef CONFIG_SPL_OF_CONTROL
obj-$(CONFIG_OF_LIBFDT) += libfdt/
diff --git a/lib/rsa/Kconfig b/lib/rsa/Kconfig
index 86df0a0..09ec358 100644
--- a/lib/rsa/Kconfig
+++ b/lib/rsa/Kconfig
@@ -13,6 +13,10 @@
option. The software based modular exponentiation is built into
mkimage irrespective of this option.
+config SPL_RSA
+ bool "Use RSA Library within SPL"
+ depends on RSA
+
if RSA
config RSA_SOFTWARE_EXP
bool "Enable driver for RSA Modular Exponentiation in software"
diff --git a/lib/rsa/Makefile b/lib/rsa/Makefile
index 6867e50..4b2c1ba 100644
--- a/lib/rsa/Makefile
+++ b/lib/rsa/Makefile
@@ -7,5 +7,5 @@
# SPDX-License-Identifier: GPL-2.0+
#
-obj-$(CONFIG_FIT_SIGNATURE) += rsa-verify.o rsa-checksum.o
+obj-$(CONFIG_$(SPL_)FIT_SIGNATURE) += rsa-verify.o rsa-checksum.o
obj-$(CONFIG_RSA_SOFTWARE_EXP) += rsa-mod-exp.o