xilinx: zynqmp: Add usb dfu/thor distro boot support

In usb boot mode distro boot should select usb device as primary boot
device instead of usb host. So make usb dfu as primary boot device. But do
not list it in boot_targets as fallback option because it is not classic
mode for booting. Using 60s timeout by default should be enough time for
dfu-utils to start transaction. In case none needs this please change
timeout value in the command or disable CONFIG_DFU_TIMEOUT.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>

board/xilinx/zynqmp/zynqmp.c

@@ -571,7 +571,7 @@ int board_late_init(void)
 	switch (bootmode) {
 	case USB_MODE:
 		puts("USB_MODE\n");
-		mode = "usb";
+		mode = "usb_dfu0 usb_dfu1";
 		env_set("modeboot", "usb_dfu_spl");
 		break;
 	case JTAG_MODE:

configs/xilinx_zynqmp_virt_defconfig

@@ -81,6 +81,7 @@ CONFIG_SCSI_AHCI=y
 CONFIG_SATA_CEVA=y
 CONFIG_CLK_ZYNQMP=y
 CONFIG_DFU_TFTP=y
+CONFIG_DFU_TIMEOUT=y
 CONFIG_DFU_RAM=y
 CONFIG_USB_FUNCTION_FASTBOOT=y
 CONFIG_FASTBOOT_FLASH=y

include/configs/xilinx_zynqmp.h

@@ -179,11 +179,41 @@
 #define BOOTENV_DEV_NAME_JTAG(devtypeu, devtypel, instance) \
 	"jtag "
 
+#define BOOT_TARGET_DEVICES_USB_DFU(func) \
+	func(USB_DFU, usb_dfu, 0) func(USB_DFU, usb_dfu, 1)
+
+#define BOOTENV_DEV_USB_DFU(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel #instance "=setenv dfu_alt_info boot.scr ram " \
+	"$scriptaddr $script_size_f && " \
+	"dfu " #instance " ram " #instance " 60 && " \
+	"echo DFU" #instance ": Trying to boot script at ${scriptaddr} && " \
+	"source ${scriptaddr}; " \
+	"echo DFU" #instance ": SCRIPT FAILED: continuing...;\0"
+
+#define BOOTENV_DEV_NAME_USB_DFU(devtypeu, devtypel, instance) \
+	""
+
+#define BOOT_TARGET_DEVICES_USB_THOR(func) \
+	func(USB_THOR, usb_thor, 0) func(USB_THOR, usb_thor, 1)
+
+#define BOOTENV_DEV_USB_THOR(devtypeu, devtypel, instance) \
+	"bootcmd_" #devtypel #instance "=setenv dfu_alt_info boot.scr ram " \
+	"$scriptaddr $script_size_f && " \
+	"thordown " #instance " ram " #instance " && " \
+	"echo THOR" #instance ": Trying to boot script at ${scriptaddr} && " \
+	"source ${scriptaddr}; " \
+	"echo THOR" #instance ": SCRIPT FAILED: continuing...;\0"
+
+#define BOOTENV_DEV_NAME_USB_THOR(devtypeu, devtypel, instance) \
+	""
+
 #define BOOT_TARGET_DEVICES(func) \
 	BOOT_TARGET_DEVICES_JTAG(func) \
 	BOOT_TARGET_DEVICES_MMC(func) \
 	BOOT_TARGET_DEVICES_QSPI(func) \
 	BOOT_TARGET_DEVICES_NAND(func) \
+	BOOT_TARGET_DEVICES_USB_DFU(func) \
+	BOOT_TARGET_DEVICES_USB_THOR(func) \
 	BOOT_TARGET_DEVICES_USB(func) \
 	BOOT_TARGET_DEVICES_SCSI(func) \
 	BOOT_TARGET_DEVICES_PXE(func) \