From 2d06361a11e88e6ca5bbd11e3ed5717d7715bfe1 Mon Sep 17 00:00:00 2001
From: Michal Simek <michal.simek@xilinx.com>
Date: Wed, 15 Jul 2020 14:20:34 +0200
Subject: [PATCH] xilinx: zynqmp: Enable DFU tftp support

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@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 7ed88ae094..a0984c8045 100644
--- a/configs/xilinx_zynqmp_virt_defconfig
+++ b/configs/xilinx_zynqmp_virt_defconfig
@@ -66,6 +66,7 @@ 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 bbcdc48c74..7c24bf632e 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