TPM commands are much easier to read/write with these macros that will transform words or integers into byte strings. This way, there is no need to call pack_byte_string() while all variable length in a command are known (and at must 4 bytes, which is a lot of them).
Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Reviewed-by: Simon Glass sjg@chromium.org --- lib/tpm-utils.h | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/lib/tpm-utils.h b/lib/tpm-utils.h index 429da46232..9c875e6fa7 100644 --- a/lib/tpm-utils.h +++ b/lib/tpm-utils.h @@ -13,6 +13,12 @@ /* Internal error of TPM command library */ #define TPM_LIB_ERROR ((u32)~0u)
+/* To make strings of commands more easily */ +#define __MSB(x) ((x) >> 8) +#define __LSB(x) ((x) & 0xFF) +#define tpm_u16(x) __MSB(x), __LSB(x) +#define tpm_u32(x) tpm_u16((x) >> 16), tpm_u16((x) & 0xFFFF) + /** * tpm_open() - Request access to locality 0 for the caller *