From 6fc605be954cb33b0a59eb112975ce28e151e624 Mon Sep 17 00:00:00 2001
From: "Wesley W. Terpstra" <w.terpstra@gsi.de>
Date: Thu, 5 Jul 2012 15:12:04 +0200
Subject: [PATCH] Return to 62.5MHz; packet loss was the filter not the
frequency. Update Etherbone config space with correct IP address.
---
boards/arria/board.h | 2 +-
lib/bootp.c | 11 +++++++++++
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/boards/arria/board.h b/boards/arria/board.h
index 39b2948f6..d872ab686 100644
--- a/boards/arria/board.h
+++ b/boards/arria/board.h
@@ -6,7 +6,7 @@
/* Board-specific parameters */
/* WR Core system/CPU clock frequency in Hz */
-#define CPU_CLOCK 125000000ULL
+#define CPU_CLOCK 62500000ULL
/* WR Reference clock period (picoseconds) and frequency (Hz) */
#define REF_CLOCK_PERIOD_PS 8000
diff --git a/lib/bootp.c b/lib/bootp.c
index 53216971e..6d4578c9e 100644
--- a/lib/bootp.c
+++ b/lib/bootp.c
@@ -124,7 +124,10 @@ int send_bootp(uint8_t* buf, int retry) {
int process_bootp(uint8_t* buf, int len)
{
+ volatile unsigned int *eb_ip = (unsigned int*)0x20718;
+ unsigned int ip;
uint8_t mac[6];
+
get_mac_addr(mac);
if (len != BOOTP_END) return 0;
@@ -139,5 +142,13 @@ int process_bootp(uint8_t* buf, int len)
mprintf("Discovered IP address!\n");
memcpy(myIP, buf+BOOTP_YIADDR, 4);
+
+ ip =
+ (buf[BOOTP_YIADDR+0] << 24) |
+ (buf[BOOTP_YIADDR+1] << 16) |
+ (buf[BOOTP_YIADDR+2] << 8) |
+ (buf[BOOTP_YIADDR+3]);
+ while (*eb_ip != ip) *eb_ip = ip;
+
return 1;
}
--
GitLab