From 87423d740b91329b8d1d0b73cafd6930993b558a Mon Sep 17 00:00:00 2001
From: Thomas Lange <thomas@corelatus.se>
Date: Fri, 24 Apr 2009 16:22:16 +0200
Subject: [PATCH] MIPS: Implement ethernet halt for au1x00
Implement ethernet halt() by putting MAC0 in reset.
If we do not do this, we will get memory corruption
when ethernet frames are received during early OS boot.
Signed-off-by: Thomas Lange <thomas@corelatus.se>
Signed-off-by: Shinya Kuribayashi <skuribay@pobox.com>
---
cpu/mips/au1x00_eth.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/cpu/mips/au1x00_eth.c b/cpu/mips/au1x00_eth.c
index 6272a3aac1..5074997a29 100644
--- a/cpu/mips/au1x00_eth.c
+++ b/cpu/mips/au1x00_eth.c
@@ -276,6 +276,10 @@ static int au1x00_init(struct eth_device* dev, bd_t * bd){
}
static void au1x00_halt(struct eth_device* dev){
+ volatile u32 *macen = (volatile u32*)MAC0_ENABLE;
+
+ /* Put MAC0 in reset */
+ *macen = 0;
}
int au1x00_enet_initialize(bd_t *bis){
--
2.39.5