diff --git a/fel.c b/fel.c
index a988371..4b1e587 100644
--- a/fel.c
+++ b/fel.c
@@ -265,6 +265,7 @@ void aw_fel_print_version(libusb_device_handle *usb)
 	case 0x1667: soc_name="A33"; break;
 	case 0x1673: soc_name="A83T"; break;
 	case 0x1680: soc_name="H3"; break;
+	case 0x1701: soc_name="R40"; break;
 	case 0x1718: soc_name="H5"; break;
 	}
 
diff --git a/soc_info.c b/soc_info.c
index bfafdab..f35c363 100644
--- a/soc_info.c
+++ b/soc_info.c
@@ -167,6 +167,12 @@ soc_info_t soc_info_table[] = {
 		.swap_buffers = a64_sram_swap_buffers,
 		.sid_addr     = 0x01C14200,
 		.rvbar_reg    = 0x017000A0,
+	},{
+		.soc_id       = 0x1701, /* Allwinner R40 */
+		.scratch_addr = 0x1000,
+		.thunk_addr   = 0xA200, .thunk_size = 0x200,
+		.swap_buffers = a10_a13_a20_sram_swap_buffers,
+		.sid_addr     = 0x01C1B200,
 	},{
 		.swap_buffers = NULL /* End of the table */
 	}
diff --git a/uart0-helloworld-sdboot.c b/uart0-helloworld-sdboot.c
index c9cde01..d60720c 100644
--- a/uart0-helloworld-sdboot.c
+++ b/uart0-helloworld-sdboot.c
@@ -256,6 +256,7 @@ void soc_detection_init(void)
 #define soc_is_a64()	(soc_id == 0x1689)
 #define soc_is_h3()	(soc_id == 0x1680)
 #define soc_is_h5()	(soc_id == 0x1718)
+#define soc_is_r40()	(soc_id == 0x1701)
 
 /* A10s and A13 share the same ID, so we need a little more effort on those */
 
@@ -303,7 +304,7 @@ void clock_init_uart(void)
 
 void gpio_init(void)
 {
-	if (soc_is_a10() || soc_is_a20()) {
+	if (soc_is_a10() || soc_is_a20() || soc_is_r40()) {
 		sunxi_gpio_set_cfgpin(SUNXI_GPB(22), SUN4I_GPB_UART0);
 		sunxi_gpio_set_cfgpin(SUNXI_GPB(23), SUN4I_GPB_UART0);
 		sunxi_gpio_set_pull(SUNXI_GPB(23), SUNXI_GPIO_PULL_UP);
@@ -446,6 +447,8 @@ int main(void)
 		uart0_puts("Allwinner H3!\n");
 	else if (soc_is_h5())
 		uart0_puts("Allwinner H5!\n");
+	else if (soc_is_r40())
+		uart0_puts("Allwinner R40!\n");
 	else
 		uart0_puts("unknown Allwinner SoC!\n");