feat(rme): add dev granules tests

Add tests for RMI_GRANULE_DELEGATE and
RMI_GRANULE_UNDELEGATE commands using
device granules.
Add plat_get_dev_region() function to
retrieve platform PCIe memory region info.

Change-Id: Ie59361dd28e11db348c30b033c156de044aa0ffc
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>
diff --git a/plat/arm/fvp/fvp_pcie.c b/plat/arm/fvp/fvp_pcie.c
index c43e42d..38bdf39 100644
--- a/plat/arm/fvp/fvp_pcie.c
+++ b/plat/arm/fvp/fvp_pcie.c
@@ -1,9 +1,10 @@
 /*
- * Copyright (c) 2024, Arm Limited. All rights reserved.
+ * Copyright (c) 2024-2025, Arm Limited. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <assert.h>
 #include <pcie.h>
 
 #include <platform.h>
@@ -25,3 +26,32 @@
 {
 	return &fvp_pcie_cfg;
 }
+
+/*
+ * Retrieve platform PCIe memory region (Base Platform RevC only)
+ */
+int plat_get_dev_region(uint64_t *base, size_t *size,
+			uint32_t type, uint32_t idx)
+{
+#ifdef __aarch64__
+	assert((base != NULL) && (size != NULL));
+
+	if (type == DEV_MEM_NON_COHERENT) {
+		switch (idx) {
+		case 0U:
+			/* PCIe memory region 1 */
+			*base = PCIE_MEM_1_BASE;
+			*size = PCIE_MEM_1_SIZE;
+			return 0;
+		case 1U:
+			/* PCIe memory region 2 */
+			*base = PCIE_MEM_2_BASE;
+			*size = PCIE_MEM_2_SIZE;
+			return 0;
+		default:
+			break;
+		}
+	}
+#endif
+	return -1;
+}