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 <s...@chromium.org>
---
lib/Kconfig | 17 +++++++++++++++++
lib/Makefile | 3 ++-
2 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/lib/Kconfig b/lib/Kconfig
index def36f275ce..b51455a5f77 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -422,6 +422,7 @@ config TPM
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 +618,22 @@ config SPL_MD5
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"
+ 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
diff --git a/lib/Makefile b/lib/Makefile
index d77b33e7f48..a282e40258c 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -57,12 +57,13 @@ endif
obj-$(CONFIG_$(SPL_TPL_)TPM) += tpm-common.o
ifeq ($(CONFIG_$(SPL_TPL_)TPM),y)
-obj-y += crc8.o
obj-$(CONFIG_TPM) += tpm_api.o
obj-$(CONFIG_TPM_V1) += tpm-v1.o
obj-$(CONFIG_TPM_V2) += tpm-v2.o
endif
+obj-$(CONFIG_$(SPL_TPL_)CRC8) += crc8.o
+
obj-y += crypto/
obj-$(CONFIG_$(SPL_TPL_)GENERATE_ACPI_TABLE) += acpi/
--
2.39.0.314.g84b9a713c41-goog
