From: Manish V Badarkhe <Manish.Badarkhe@arm.com>
Date: Tue, 21 Jun 2022 17:11:53 +0000 (+0100)
Subject: feat(drtm): take DRTM components measurements before DLME launch
X-Git-Tag: baikal/aarch64/sdk5.9~100^2~9
X-Git-Url: https://git.baikalelectronics.ru/?a=commitdiff_plain;h=2090e55283c4bf85c7a61735ca0e872745c55896;p=arm-tf.git

feat(drtm): take DRTM components measurements before DLME launch

Taken measurement of various DRTM components in the Event Log
buffer to pass it to DLME.

Change-Id: Ic56620161f42596d22bf40d5c83c041cbce0b618
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
---

diff --git a/services/std_svc/drtm/drtm_main.c b/services/std_svc/drtm/drtm_main.c
index 53aafeb4b..a96706d59 100644
--- a/services/std_svc/drtm/drtm_main.c
+++ b/services/std_svc/drtm/drtm_main.c
@@ -19,6 +19,7 @@
 #include <common/runtime_svc.h>
 #include <drivers/auth/crypto_mod.h>
 #include "drtm_main.h"
+#include "drtm_measurements.h"
 #include "drtm_remediation.h"
 #include <lib/psci/psci_lib.h>
 #include <lib/xlat_tables/xlat_tables_v2.h>
@@ -392,6 +393,27 @@ static uint64_t drtm_dynamic_launch(uint64_t x1, void *handle)
 		SMC_RET1(handle, ret);
 	}
 
+	/*
+	 * The DMA protection is now engaged.  Note that any failure mode that
+	 * returns an error to the DRTM-launch caller must now disengage DMA
+	 * protections before returning to the caller.
+	 */
+
+	ret = drtm_take_measurements(&args);
+	if (ret != SUCCESS) {
+		goto err_undo_dma_prot;
+	}
+
+	SMC_RET1(handle, ret);
+
+err_undo_dma_prot:
+	dma_prot_ret = drtm_dma_prot_disengage();
+	if (dma_prot_ret != SUCCESS) {
+		ERROR("%s(): drtm_dma_prot_disengage() failed unexpectedly"
+		      " rc=%d\n", __func__, ret);
+		panic();
+	}
+
 	SMC_RET1(handle, ret);
 }