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authorSimon Glass <sjg@chromium.org>2017-04-26 22:27:53 -0600
committerTom Rini <trini@konsulko.com>2017-04-30 10:30:03 -0400
commitc04b9b3440a2b2c55267bc76c594f49d101657fb (patch)
tree6b22e15142b64bc31eff511ea960419a33bf9980 /cmd
parentac20a1b21caeb779848f8f4731060dbc00f4bd7b (diff)
Convert CONFIG_CMD_BLOB to Kconfig
This converts the following to Kconfig: CONFIG_CMD_BLOB Signed-off-by: Simon Glass <sjg@chromium.org> [trini: Add imply CMD_BLOB under CHAIN_OF_TRUST] Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'cmd')
-rw-r--r--cmd/Kconfig44
-rw-r--r--cmd/Makefile2
2 files changed, 45 insertions, 1 deletions
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 0c6d44e2966..306027c11a6 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -779,6 +779,50 @@ config CMD_AES
supported by the algorithm but this command only supports 128 bits
at present.
+config CMD_BLOB
+ bool "Enable the 'blob' command"
+ help
+ This is used with the Freescale secure boot mechanism.
+
+ Freescale's SEC block has built-in Blob Protocol which provides
+ a method for protecting user-defined data across system power
+ cycles. SEC block protects data in a data structure called a Blob,
+ which provides both confidentiality and integrity protection.
+
+ Encapsulating data as a blob
+ Each time that the Blob Protocol is used to protect data, a
+ different randomly generated key is used to encrypt the data.
+ This random key is itself encrypted using a key which is derived
+ from SoC's non-volatile secret key and a 16 bit Key identifier.
+ The resulting encrypted key along with encrypted data is called a
+ blob. The non-volatile secure key is available for use only during
+ secure boot.
+
+ During decapsulation, the reverse process is performed to get back
+ the original data.
+
+ Sub-commands:
+ blob enc - encapsulating data as a cryptgraphic blob
+ blob dec - decapsulating cryptgraphic blob to get the data
+
+ Syntax:
+
+ blob enc src dst len km
+
+ Encapsulate and create blob of data $len bytes long
+ at address $src and store the result at address $dst.
+ $km is the 16 byte key modifier is also required for
+ generation/use as key for cryptographic operation. Key
+ modifier should be 16 byte long.
+
+ blob dec src dst len km
+
+ Decapsulate the blob of data at address $src and
+ store result of $len byte at addr $dst.
+ $km is the 16 byte key modifier is also required for
+ generation/use as key for cryptographic operation. Key
+ modifier should be 16 byte long.
+
config CMD_TPM
bool "Enable the 'tpm' command"
depends on TPM
diff --git a/cmd/Makefile b/cmd/Makefile
index 97c862f6511..e98786807b6 100644
--- a/cmd/Makefile
+++ b/cmd/Makefile
@@ -152,9 +152,9 @@ obj-$(CONFIG_CMD_ETHSW) += ethsw.o
# Power
obj-$(CONFIG_CMD_PMIC) += pmic.o
obj-$(CONFIG_CMD_REGULATOR) += regulator.o
-endif # !CONFIG_SPL_BUILD
obj-$(CONFIG_CMD_BLOB) += blob.o
+endif # !CONFIG_SPL_BUILD
# core command
obj-y += nvedit.o