diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index c23c47360664..715d3a770b76 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -189,6 +189,9 @@ extern u64			kimage_vaddr;
 /* the offset between the kernel virtual and physical mappings */
 extern u64			kimage_voffset;
 
+/* physical memory limit imposed by the booloader */
+extern phys_addr_t bootloader_memory_limit;
+
 static inline unsigned long kaslr_offset(void)
 {
 	return kimage_vaddr - KIMAGE_VADDR;
diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c
index 45c00a54909c..3184ceccc288 100644
--- a/arch/arm64/mm/init.c
+++ b/arch/arm64/mm/init.c
@@ -257,6 +257,7 @@ int pfn_valid(unsigned long pfn)
 EXPORT_SYMBOL(pfn_valid);
 
 static phys_addr_t memory_limit = PHYS_ADDR_MAX;
+phys_addr_t bootloader_memory_limit;
 
 /*
  * Limit the memory size that was specified via FDT.
@@ -349,6 +350,12 @@ void __init arm64_memblock_init(void)
 		memblock_remove(0, memstart_addr);
 	}
 
+	/*
+	 * Save bootloader imposed memory limit before we overwirte
+	 * memblock.
+	 */
+	bootloader_memory_limit = memblock_end_of_DRAM();
+
 	/*
 	 * Apply the memory limit if it was set. Since the kernel may be loaded
 	 * high up in memory, add back the kernel region that must be accessible