drivers: caam: hal: add caam_hal_sm_get_base_dt() implementation

Implement caam_hal_sm_get_base_dt() function when CFG_DT=y

Signed-off-by: Clement Faure <clement.faure@nxp.com>
Signed-off-by: Sahil Malhotra <sahil.malhotra@nxp.com>

core/drivers/crypto/caam/hal/common/hal_sm_dt.c

@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: BSD-2-Clause
+/*
+ * Copyright 2024 NXP
+ *
+ * Brief   CAAM Secure Memory Hardware Abstraction Layer.
+ */
+
+#include <caam_common.h>
+#include <caam_hal_sm.h>
+#include <kernel/dt.h>
+#include <libfdt.h>
+
+static const char *dt_sm_match_table = {
+	"fsl,imx6q-caam-sm",
+};
+
+void caam_hal_sm_get_base_dt(void *fdt, vaddr_t *sm_base)
+{
+	int node = 0;
+	int ret = 0;
+	size_t size = 0;
+
+	*sm_base = 0;
+
+	node = fdt_node_offset_by_compatible(fdt, 0, dt_sm_match_table);
+
+	if (node < 0) {
+		HAL_TRACE("CAAM Node not found err = 0x%X", node);
+		return;
+	}
+
+	/* Map the device in the system if not already present */
+	ret = dt_map_dev(fdt, node, sm_base, &size, DT_MAP_AUTO);
+	if (ret < 0) {
+		HAL_TRACE("Cannot map node 0x%X", node);
+		return;
+	}
+}

core/drivers/crypto/caam/hal/common/sub.mk

@@ -2,7 +2,7 @@ incdirs-y += ../../include
 incdirs-y += ../$(CAAM_HAL_DIR)
 incdirs-y += .
 
-srcs-$(CFG_DT) += hal_cfg_dt.c
+srcs-$(CFG_DT) += hal_cfg_dt.c hal_sm_dt.c
 srcs-y += hal_cfg.c
 srcs-y += hal_rng.c
 srcs-y += hal_jr.c