POST: Add option for external ethernet loopback test
When CFG_POST_ETHER_EXT_LOOPBACK is defined, the ethernet POST
is not done using an internal loopback connection, but by assuming
that an external loopback connector is plugged into the board.
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/post/cpu/ppc4xx/ether.c b/post/cpu/ppc4xx/ether.c
index 391c815..ab23ca5 100644
--- a/post/cpu/ppc4xx/ether.c
+++ b/post/cpu/ppc4xx/ether.c
@@ -68,10 +68,10 @@
static void ether_post_init (int devnum, int hw_addr)
{
int i;
- unsigned mode_reg;
#if defined(CONFIG_440GX) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || \
defined(CONFIG_440SP) || defined(CONFIG_440SPE)
+ unsigned mode_reg;
sys_info_t sysinfo;
#endif
#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX) || defined(CONFIG_440SPE)
@@ -185,10 +185,17 @@
mtdcr (malrxcasr, (MAL_TXRX_CASR >> devnum));
/* set internal loopback mode */
+#ifdef CFG_POST_ETHER_EXT_LOOPBACK
+ out32 (EMAC_M1 + hw_addr, EMAC_M1_FDE | 0 |
+ EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K |
+ EMAC_M1_MF_100MBPS | EMAC_M1_IST |
+ in32 (EMAC_M1));
+#else
out32 (EMAC_M1 + hw_addr, EMAC_M1_FDE | EMAC_M1_ILE |
EMAC_M1_RFS_4K | EMAC_M1_TX_FIFO_2K |
EMAC_M1_MF_100MBPS | EMAC_M1_IST |
in32 (EMAC_M1));
+#endif
/* set transmit enable & receive enable */
out32 (EMAC_M0 + hw_addr, EMAC_M0_TXE | EMAC_M0_RXE);