diff options
| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2018-05-15 11:57:09 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2018-05-25 20:12:56 -0400 |
| commit | f6872816ce07b6b26c9b6a4b1ba9206805d9321d (patch) | |
| tree | 2f2d6c26bae265d2690263fc4ebb5fe4aaf36d85 | |
| parent | ff32245bb3b57689cd7b1699ae29ff8fc0edc0d8 (diff) | |
tpm: add macros to enhance TPM commands readability
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>
Reviewed-by: Tom Rini <trini@konsulko.com>
| -rw-r--r-- | lib/tpm-utils.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/lib/tpm-utils.h b/lib/tpm-utils.h index bc98d1ef8f7..a9cb7dc7ee5 100644 --- a/lib/tpm-utils.h +++ b/lib/tpm-utils.h @@ -12,6 +12,12 @@ /* 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 * |