security/tpm/tss: Add ClearControl Function
Add ClearControl Function which is needed for a follow-up patch.
Change-Id: Ia19185528fd821e420b0bdb424760c93b79523a4
Signed-off-by: Christian Walter <christian.walter@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38617
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
diff --git a/src/security/tpm/tss/tcg-2.0/tss.c b/src/security/tpm/tss/tcg-2.0/tss.c
index 6bc3096..49a6cea 100644
--- a/src/security/tpm/tss/tcg-2.0/tss.c
+++ b/src/security/tpm/tss/tcg-2.0/tss.c
@@ -170,6 +170,23 @@
return TPM_SUCCESS;
}
+uint32_t tlcl_clear_control(bool disable)
+{
+ struct tpm2_response *response;
+ struct tpm2_clear_control_cmd cc = {
+ .disable = 0,
+ };
+
+ response = tpm_process_command(TPM2_ClearControl, &cc);
+ printk(BIOS_INFO, "%s: response is %x\n",
+ __func__, response ? response->hdr.tpm_code : -1);
+
+ if (!response || response->hdr.tpm_code)
+ return TPM_E_IOERROR;
+
+ return TPM_SUCCESS;
+}
+
static uint8_t tlcl_init_done;
/* This function is called directly by vboot, uses vboot return types. */