[PATCH 2/2] xilinx: zynqmp: Enable DFU tftp support

[Michal Simek]

Enable DFU tftp support for firmware update. Fill dfu_ram_tftp variable to
have command present for showing how to use it.

boot FIT image has been created from below fragment. Key part is that type
of image has to be firmware. Also based on experiment load property is
completely ignored and base addresses are taken from dfu_alt_info variable.

$ cat update_uboot.its
/dts-v1/;

/ {
	description = "Automatic U-Boot update";
	#address-cells = <1>;

	images {
		Image {
			description = "Kernel";
			data = /incbin/("/tftpboot/Image");
			compression = "none";
			arch = "arm64";
			type = "firmware";
			os = "linux";
			load = <0x80000>;
			entry = <0x80000>;
			hash-1 {
				algo = "sha1";
			};
		};
		system.dtb {
			description = "DTB";
			data = /incbin/("/tftpboot/system.dtb");
			compression = "none";
			arch = "arm64";
			type = "firmware";
			load = <0>;
			hash-1 {
				algo = "sha1";
			};
		};
	};
};

$ mkimage -f update_uboot.its /tftpboot/boot

When U-Boot starts get IP address and server IP.
dhcp
setenv serverip 192.168.0.105

And then run prepared command.
run dfu_ram_tftp

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 configs/xilinx_zynqmp_virt_defconfig | 1 +
 include/configs/xilinx_zynqmp.h      | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/configs/xilinx_zynqmp_virt_defconfig b/configs/xilinx_zynqmp_virt_defconfig
index d77ba051624e..2d84f0c04e12 100644
--- a/configs/xilinx_zynqmp_virt_defconfig
+++ b/configs/xilinx_zynqmp_virt_defconfig
@@ -69,6 +69,7 @@ CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_SCSI_AHCI=y
 CONFIG_SATA_CEVA=y
 CONFIG_CLK_ZYNQMP=y
+CONFIG_DFU_TFTP=y
 CONFIG_DFU_RAM=y
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_FLASH=y
diff --git a/include/configs/xilinx_zynqmp.h b/include/configs/xilinx_zynqmp.h
index 86f292761b38..f45a1a2272d3 100644
--- a/include/configs/xilinx_zynqmp.h
+++ b/include/configs/xilinx_zynqmp.h
@@ -61,7 +61,9 @@
 	"Image ram 80000 $kernel_size_r\\\\;" \
 	"system.dtb ram $fdt_addr_r $fdt_size_r\0" \
 	"dfu_ram=run dfu_ram_info && dfu 0 ram 0\0" \
-	"thor_ram=run dfu_ram_info && thordown 0 ram 0\0"
+	"thor_ram=run dfu_ram_info && thordown 0 ram 0\0" \
+	"dfu_ram_tftp=run dfu_ram_info && setenv updatefile boot && " \
+	"setenv loadaddr 10000000 && dfu tftp ram 0\0"
 
 #define DFU_ALT_INFO  \
 		DFU_ALT_INFO_RAM
-- 
2.27.0