From 5a42dbf333f3624d79a23658a88f226ccf6128c6 Mon Sep 17 00:00:00 2001
From: "Gabriel L. Somlo" <gsomlo@gmail.com>
Date: Thu, 27 Jun 2019 10:31:33 -0400
Subject: [PATCH] BIOS: TFTP: ASCII spinner progress indicator (cosmetic)

---
 litex/soc/software/libnet/tftp.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/litex/soc/software/libnet/tftp.c b/litex/soc/software/libnet/tftp.c
index 10e31e55f..65885de9b 100644
--- a/litex/soc/software/libnet/tftp.c
+++ b/litex/soc/software/libnet/tftp.c
@@ -115,6 +115,7 @@ int tftp_get(uint32_t ip, uint16_t server_port, const char *filename,
 	int tries;
 	int i;
 	int length_before;
+	int spin = 0;
 
 	if(!microudp_arp_resolve(ip))
 		return -1;
@@ -148,6 +149,10 @@ int tftp_get(uint32_t ip, uint16_t server_port, const char *filename,
 		if(length_before != total_length) {
 			i = 12000000;
 			length_before = total_length;
+			if ((total_length & 0x7fff) == 0) { // every 32K
+				putchar("|/-\\"[spin++ % 4]);
+				putchar('\b');
+			}
 		}
 		if(i-- == 0) {
 			microudp_set_callback(NULL);