Re: RedBoot load command speedup

[jeroen dobbelaere <jeroen dot dobbelaere at acunia dot com>]

Hi all,

I am experimenting with an xscale platform with a smc91c111 ethernet chip.

By using appended patch, I am able reducing the time to
download 32MByte (tftp) from >4 minutes to 20 seconds.
(Which becomes acceptable)

I think reducing those delay values _is_ important.

Greetings,
--
Jeroen Dobbelaere
Embedded Software Engineer

ACUNIA Embedded Solutions
http://www.acunia.com/aes

diff -ru ecos-orig/packages/io/eth/current/src/stand_alone/eth_drv.c ecos/packages/io/eth/current/src/stand_alone/eth_drv.c
--- ecos-orig/packages/io/eth/current/src/stand_alone/eth_drv.c	Thu May 30 17:02:50 2002
+++ ecos/packages/io/eth/current/src/stand_alone/eth_drv.c	Tue Jun 25 12:03:54 2002
@@ -266,7 +266,7 @@
     int sg_len = 2;
     void *dbg = CYGACC_CALL_IF_DBG_DATA();
     int old_state;
-    int wait_time = 5;  // Timeout before giving up
+    int wait_time = 50000;  // Timeout before giving up
     void *eth_drv_old = 0;
 
     if (dbg) {
@@ -287,7 +287,7 @@
     while (!(sc->funs->can_send)(sc)) {
         // Give driver a chance to service hardware
         (sc->funs->poll)(sc);
-        CYGACC_CALL_IF_DELAY_US(2*100000);
+        CYGACC_CALL_IF_DELAY_US(2*10);
         if (--wait_time <= 0)
             goto reset_and_out;  // Give up on sending packet
     }
@@ -310,14 +310,14 @@
 
     (sc->funs->send)(sc, sg_list, sg_len, len+14, (CYG_ADDRWORD)&packet_sent);
 
-    wait_time = 500;
+    wait_time = 50000;
     while (1) {
         (sc->funs->poll)(sc);
 
 	if(packet_sent)
 	    break;
 	
-        CYGACC_CALL_IF_DELAY_US(2*1000);
+        CYGACC_CALL_IF_DELAY_US(2*10);
         if (--wait_time <= 0)
             goto reset_and_out;  // Give up on sending packet
     }
diff -ru ecos-orig/packages/redboot/current/src/net/udp.c ecos/packages/redboot/current/src/net/udp.c
--- ecos-orig/packages/redboot/current/src/net/udp.c	Thu May 30 17:07:48 2002
+++ ecos/packages/redboot/current/src/net/udp.c	Tue Jun 25 12:06:10 2002
@@ -242,7 +242,7 @@
 {
     int res, my_port, total_ms;
     udp_socket_t skt;
-    unsigned long start;
+    unsigned long timeout;
 
     my_port = ntohs(local->sin_port);
     if (__udp_install_listener(&skt, my_port, __udp_recvfrom_handler) < 0) {
@@ -252,15 +252,16 @@
     recvfrom_len = len;
     recvfrom_server = server;
     total_ms = (timo->tv_sec * 1000) + (timo->tv_usec / 1000);
-    start = MS_TICKS();
+    timeout = total_ms*500;
     res = -1;
-    while ((MS_TICKS_DELAY() - start) < total_ms) {
+    while (timeout--) {
         __enet_poll();  // Handle the hardware
         if (!recvfrom_buf) {
             // Data have arrived
             res = recvfrom_len;
             break;
         }
+	CYGACC_CALL_IF_DELAY_US(20);
     }
     __udp_remove_listener(my_port);
     return res;