efi/libstub: Move get_dram_base() into arm-stub.c

get_dram_base() is only called from arm-stub.c so move it into
the same source file as its caller.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

drivers/firmware/efi/libstub/arm-stub.c

@@ -88,6 +88,39 @@ void install_memreserve_table(void)
 		pr_efi_err("Failed to install memreserve config table!\n");
 }
 
+static unsigned long get_dram_base(void)
+{
+	efi_status_t status;
+	unsigned long map_size, buff_size;
+	unsigned long membase  = EFI_ERROR;
+	struct efi_memory_map map;
+	efi_memory_desc_t *md;
+	struct efi_boot_memmap boot_map;
+
+	boot_map.map		= (efi_memory_desc_t **)&map.map;
+	boot_map.map_size	= &map_size;
+	boot_map.desc_size	= &map.desc_size;
+	boot_map.desc_ver	= NULL;
+	boot_map.key_ptr	= NULL;
+	boot_map.buff_size	= &buff_size;
+
+	status = efi_get_memory_map(&boot_map);
+	if (status != EFI_SUCCESS)
+		return membase;
+
+	map.map_end = map.map + map_size;
+
+	for_each_efi_memory_desc_in_map(&map, md) {
+		if (md->attribute & EFI_MEMORY_WB) {
+			if (membase > md->phys_addr)
+				membase = md->phys_addr;
+		}
+	}
+
+	efi_bs_call(free_pool, map.map);
+
+	return membase;
+}
 
 /*
  * This function handles the architcture specific differences between arm and

drivers/firmware/efi/libstub/efi-stub-helper.c

@@ -75,41 +75,6 @@ void efi_printk(char *str)
 	}
 }
 
-
-unsigned long get_dram_base(void)
-{
-	efi_status_t status;
-	unsigned long map_size, buff_size;
-	unsigned long membase  = EFI_ERROR;
-	struct efi_memory_map map;
-	efi_memory_desc_t *md;
-	struct efi_boot_memmap boot_map;
-
-	boot_map.map =		(efi_memory_desc_t **)&map.map;
-	boot_map.map_size =	&map_size;
-	boot_map.desc_size =	&map.desc_size;
-	boot_map.desc_ver =	NULL;
-	boot_map.key_ptr =	NULL;
-	boot_map.buff_size =	&buff_size;
-
-	status = efi_get_memory_map(&boot_map);
-	if (status != EFI_SUCCESS)
-		return membase;
-
-	map.map_end = map.map + map_size;
-
-	for_each_efi_memory_desc_in_map(&map, md) {
-		if (md->attribute & EFI_MEMORY_WB) {
-			if (membase > md->phys_addr)
-				membase = md->phys_addr;
-		}
-	}
-
-	efi_bs_call(free_pool, map.map);
-
-	return membase;
-}
-
 static efi_status_t efi_file_size(void *__fh, efi_char16_t *filename_16,
 				  void **handle, u64 *file_sz)
 {

drivers/firmware/efi/libstub/efistub.h

@@ -549,8 +549,6 @@ efi_status_t efi_exit_boot_services(void *handle,
 
 void efi_char16_printk(efi_char16_t *);
 
-unsigned long get_dram_base(void);
-
 efi_status_t allocate_new_fdt_and_exit_boot(void *handle,
 					    unsigned long *new_fdt_addr,
 					    unsigned long max_addr,