arm64: versal: Add new jtag distro boot command

This patch adds new jtag distro boot command to look for bootscript file
in DDR and execute it first incase of jtag bootmode.
This patch also updates scriptaddr to 512MB as there is high of script
corruption incase of bigger kernel image.
Signed-off-by: NSiva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: NMichal Simek <michal.simek@xilinx.com>

board/xilinx/versal/board.c

@@ -108,7 +108,7 @@ int board_late_init(void)
 	switch (bootmode) {
 	case JTAG_MODE:
 		puts("JTAG_MODE\n");
-		mode = "pxe dhcp";
+		mode = "jtag pxe dhcp";
 		break;
 	case QSPI_MODE_24BIT:
 		puts("QSPI_MODE_24\n");

include/configs/xilinx_versal.h

@@ -90,7 +90,7 @@
 	"pxefile_addr_r=0x10000000\0" \
 	"kernel_addr_r=0x18000000\0" \
 	"kernel_size_r=0x10000000\0" \
-	"scriptaddr=0x02000000\0" \
+	"scriptaddr=0x20000000\0" \
 	"ramdisk_addr_r=0x02100000\0" \
 	"script_offset_f=0x3f80000\0" \
 	"script_size_f=0x80000\0"
@@ -115,7 +115,16 @@
 #define BOOTENV_DEV_NAME_XSPI(devtypeu, devtypel, instance) \
 	"xspi "
 
+#define BOOT_TARGET_DEVICES_JTAG(func)	func(JTAG, jtag, na)
+
+#define BOOTENV_DEV_JTAG(devtypeu, devtypel, instance) \
+	"bootcmd_jtag=source $scriptaddr; echo SCRIPT FAILED: continuing...;\0"
+
+#define BOOTENV_DEV_NAME_JTAG(devtypeu, devtypel, instance) \
+	"jtag "
+
 #define BOOT_TARGET_DEVICES(func) \
+	BOOT_TARGET_DEVICES_JTAG(func) \
 	BOOT_TARGET_DEVICES_MMC(func) \
 	BOOT_TARGET_DEVICES_XSPI(func) \
 	func(PXE, pxe, na) \