diff --git a/plat/renesas/rcar/bl2_plat_setup.c b/plat/renesas/rcar/bl2_plat_setup.c
index eebd5af87..3bd20e230 100644
--- a/plat/renesas/rcar/bl2_plat_setup.c
+++ b/plat/renesas/rcar/bl2_plat_setup.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, Renesas Electronics Corporation. All rights reserved.
+ * Copyright (c) 2018-2021, Renesas Electronics Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -705,6 +705,7 @@ static void bl2_advertise_dram_size(uint32_t product)
 		[4] = 0x600000000ULL,
 		[6] = 0x700000000ULL,
 	};
+	uint32_t cut = mmio_read_32(RCAR_PRR) & PRR_CUT_MASK;
 
 	switch (product) {
 	case PRR_PRODUCT_H3:
@@ -730,15 +731,21 @@ static void bl2_advertise_dram_size(uint32_t product)
 		break;
 
 	case PRR_PRODUCT_M3:
+		if (cut < PRR_PRODUCT_30) {
 #if (RCAR_GEN3_ULCB == 1)
-		/* 2GB(1GBx2 2ch split) */
-		dram_config[1] = 0x40000000ULL;
-		dram_config[5] = 0x40000000ULL;
+			/* 2GB(1GBx2 2ch split) */
+			dram_config[1] = 0x40000000ULL;
+			dram_config[5] = 0x40000000ULL;
 #else
-		/* 4GB(2GBx2 2ch split) */
-		dram_config[1] = 0x80000000ULL;
-		dram_config[5] = 0x80000000ULL;
+			/* 4GB(2GBx2 2ch split) */
+			dram_config[1] = 0x80000000ULL;
+			dram_config[5] = 0x80000000ULL;
 #endif
+		} else {
+			/* 8GB(2GBx4 2ch split) */
+			dram_config[1] = 0x100000000ULL;
+			dram_config[5] = 0x100000000ULL;
+		}
 		break;
 
 	case PRR_PRODUCT_M3N: