tpm: Add a proper Kconfig option for crc8 in SPL
The current approach is a bit of a hack and only works for the tpm
subsystem. Add a Kconfig so that crc8 can be enabled in SPL for other
purposes.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/Kconfig b/lib/Kconfig
index def36f2..36d3cf9 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -422,6 +422,7 @@
config SPL_TPM
bool "Trusted Platform Module (TPM) Support in SPL"
depends on SPL_DM
+ imply SPL_CRC8
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
@@ -617,6 +618,23 @@
security applications, but it can be useful for providing a quick
checksum of a block of data.
+config CRC8
+ def_bool y
+ help
+ Enables CRC8 support in U-Boot. This is normally required. CRC8 is
+ a simple and fast checksumming algorithm which does a bytewise
+ checksum with feedback to produce an 8-bit result. The code is small
+ and it does not require a lookup table (unlike CRC32).
+
+config SPL_CRC8
+ bool "Support CRC8 in SPL"
+ depends on SPL
+ help
+ Enables CRC8 support in SPL. This is not normally required. CRC8 is
+ a simple and fast checksumming algorithm which does a bytewise
+ checksum with feedback to produce an 8-bit result. The code is small
+ and it does not require a lookup table (unlike CRC32).
+
config CRC32
def_bool y
help