Hi, all,

The FCC1 Ethernet can generate ARP packets but fails to answer the host. tcpdump message:

"14:00:34.770939 arp who-has 172.16.1.9 tell 172.16.1.53 14:00:34.773488 arp reply 172.16.1.9 is-at 00:13:72:c0:19:31 (oui Unknown)"

I am porting u-boot to a customized MPC8272 board. I configure Ethernet using FCC1 and set CLK9(PC23) as FCC1 RXCLK, CLK10(PC22) as FCC1 TXCLK. However, after the u-boot starting up I find that the pdira is changed to 0x00d43f8e (not 0x00d43f8c I set in the iop_conf_tab[4][32]), and ppara is changed to 0x0003cc31 (not 0x0003fc3f). Tcpdump captures nothing at this moment.

By using BDI2000 I change pdira and ppara values back to the ones I want and tcpdump captures the above ARP message.

I could not find where and how the u-boot codes change the pdira and ppara, please help. And may other places relate to the problem? Thanks a lot.

So far I have only tried FCC1, not FCC2 yet. The Ethernet tranceiver is LXT973.

regards,

Solaz

Here are settings related to FCC1:

===== in /board/MyBoard.c=====

/* Port A configuration */ { /* conf ppar psor pdir podr pdat */ /* PA31 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII COL */ /* PA30 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII CRS */ /* PA29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_ER */ /* PA28 */ { 1, 1, 1, 1, 0, 0 }, /* FCC1 MII TX_EN */ /* PA27 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_DV */ /* PA26 */ { 1, 1, 1, 0, 0, 0 }, /* FCC1 MII RX_ER */ ...

/* PA21 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[3]*/ /* PA20 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[2] */ /* PA19 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[1] */ /* PA18 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 MII TxD[0]*/ /* PA17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[0]*/ /* PA16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[1]*/ /* PA15 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[2]*/ /* PA14 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 MII RxD[3]*/

...

/* PC23 */ { 1, 1, 0, 0, 0, 0 }, /* CLK9 FCC1 RXCLK -- FCC1 MII Rx Clock (CLK9)*/ /* PC22 */ { 1, 1, 0, 0, 0, 0 }, /* CLK10FCC1 TXCLK -- FCC1 MII Tx Clock (CLK10)*/

======in include/configs/MYBOARD.h======

#undef CONFIG_ETHER_ON_SCC /* define if ether on SCC */ #define CONFIG_ETHER_ON_FCC /* define if ether on FCC */ #undef CONFIG_ETHER_NONE /* define if ether on something else */ #define CONFIG_ETHER_INDEX 1 /* which SCC/FCC channel for ethernet */

# define CFG_CMXFCR_MASK (CMXFCR_FC1|CMXFCR_RF1CS_MSK|CMXFCR_TF1CS_MSK) # define CFG_CMXFCR_VALUE (CMXFCR_RF1CS_CLK9|CMXFCR_TF1CS_CLK10) # define CFG_CPMFCR_RAMTYPE 0 /*BDs and buffers on 60x bus */ # define CFG_FCC_PSMR (FCC_PSMR_FDE|FCC_PSMR_LPB) /*Full dulplex*/