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*/
--
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