[nrf fromtree] drivers: misc: nordic_vpr_launcher: add DMA secure attribute support

Extend vpr_launcher and device tree bindings to support configuring
the DMA secure attribute.

Signed-off-by: Dhanoo Surasarang <[email protected]>
(cherry picked from commit 8053d23)

Author: dhsu-nordic

drivers/misc/nordic_vpr_launcher/nordic_vpr_launcher.c

@@ -15,7 +15,9 @@
 #include <zephyr/toolchain.h>
 
 #include <hal/nrf_vpr.h>
-#if DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_secure) && !defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
+#if (DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_secure) || \
+	 DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_dma_secure)) && \
+	!defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
 #include <hal/nrf_spu.h>
 #endif
 
@@ -25,6 +27,7 @@ struct nordic_vpr_launcher_config {
 	NRF_VPR_Type *vpr;
 	uintptr_t exec_addr;
 	bool enable_secure;
+	bool enable_dma_secure;
 #if DT_ANY_INST_HAS_PROP_STATUS_OKAY(source_memory)
 	uintptr_t src_addr;
 	size_t size;
@@ -53,12 +56,21 @@ static int nordic_vpr_launcher_init(const struct device *dev)
 	}
 #endif
 
-#if DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_secure) && !defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
+#if !defined(CONFIG_TRUSTED_EXECUTION_NONSECURE)
+#if DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_secure)
 	if (config->enable_secure) {
 		nrf_spu_periph_perm_secattr_set(NRF_SPU00,
 						nrf_address_slave_get((uint32_t)config->vpr),
 						true);
 	}
+#endif
+#if DT_ANY_INST_HAS_BOOL_STATUS_OKAY(enable_dma_secure)
+	if (config->enable_dma_secure) {
+		nrf_spu_periph_perm_dmasec_set(NRF_SPU00,
+						nrf_address_slave_get((uint32_t)config->vpr),
+						true);
+	}
+#endif
 #endif
 	LOG_DBG("Launching VPR (%p) from %p", config->vpr, (void *)config->exec_addr);
 	nrf_vpr_initpc_set(config->vpr, config->exec_addr);
@@ -86,6 +98,7 @@ static int nordic_vpr_launcher_init(const struct device *dev)
 		IF_ENABLED(DT_INST_NODE_HAS_PROP(inst, execution_memory),                          \
 			   (.exec_addr = VPR_ADDR(DT_INST_PHANDLE(inst, execution_memory)),))      \
 		.enable_secure = DT_INST_PROP(inst, enable_secure),                                \
+		.enable_dma_secure = DT_INST_PROP(inst, enable_dma_secure),                        \
 		IF_ENABLED(NEEDS_COPYING(inst),                                                    \
 			   (.src_addr = VPR_ADDR(DT_INST_PHANDLE(inst, source_memory)),            \
 			    .size = DT_REG_SIZE(DT_INST_PHANDLE(inst, execution_memory)),))};      \

dts/bindings/riscv/nordic,nrf-vpr-coprocessor.yaml

@@ -30,3 +30,8 @@ properties:
     type: boolean
     description: |
       Enables setting VPR core's secure attribute to secure.
+
+  enable-dma-secure:
+    type: boolean
+    description: |
+      Enables setting VPR core's DMA secure attribute to secure.