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 ---
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/