[U-Boot] [PATCH] MIPS: Implement ethernet halt for au1x00

[U-Boot] [PATCH] MIPS: Implement ethernet halt for au1x00

[Thomas Lange]

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>
---
 cpu/mips/au1x00_eth.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/cpu/mips/au1x00_eth.c b/cpu/mips/au1x00_eth.c
index 6272a3a..5074997 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){
-- 
1.5.6.5

[U-Boot] [PATCH] MIPS: Implement ethernet halt for au1x00

[Shinya Kuribayashi]

Thomas Lange wrote:
> 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>
> ---
>  cpu/mips/au1x00_eth.c |    4 ++++
>  1 files changed, 4 insertions(+), 0 deletions(-)
> 
> diff --git a/cpu/mips/au1x00_eth.c b/cpu/mips/au1x00_eth.c
> index 6272a3a..5074997 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){

Acked-by: Shinya Kuribayashi <skuribay@pobox.com>


Wolfgang-san,

could you please pick up this patch directly?  Thanks,

  Shinya