Yea that fec_t structure works fine. However the FEC driver was setting RCR[MAX_FL] to zero, so it was only getting rx frame length violation. I had to do this:

#define OPT_FRAME_SIZE (PKT_MAXBUF_SIZE << 16)

fecp->fec_r_cntrl = OPT_FRAME_SIZE | FEC_RCNTRL_MII_MODE | FEC_RCNTRL_DRT;

its fast enough. takes under four seconds to transfer this 1.8Mbyte image.

From: Zachary Landau kapheine@gmail.com Date: 2005/04/05 Tue PM 12:19:45 EDT To: u-boot-users@lists.sourceforge.net Subject: Re: [U-Boot-Users] FEC in mcf52x2

On Apr 4, 2005 7:06 PM, wroberts1@cox.net wroberts1@cox.net wrote:

...

I was trying to do an tftp transfer from u-boot-1.1.2 on an mcf5282. The fec driver in there does not seem to be functioning. Is this driver functional on the mcf5272c3?

The FEC structure in immap_5282.h is wrong. Try this:

typedef struct fec { uint res1; uint fec_ievent; uint fec_imask; uint res2; uint fec_r_des_active; uint fec_x_des_active; uint res3[3]; uint fec_ecntrl; uint res4[6]; uint fec_mii_data; uint fec_mii_speed;

uint    res5[7];
uint    fec_mibc;
uint    res6[7];
uint    fec_r_cntrl;
uint    res7[15];
uint    fec_x_cntrl;
uint    res8[7];
uint    fec_addr_low;   uint    fec_addr_high;
uint    fec_opd;
uint    res9[10];
uint    fec_ihash_table_high;
uint    fec_ihash_table_low;

uint    fec_ghash_table_high;
uint    fec_ghash_table_low;
uint    res10[7];
uint    fec_tfwr;
uint    res11;
uint    fec_r_bound;
uint    fec_r_fstart;
uint    res12[11];
uint    fec_r_des_start;
uint    fec_x_des_start;
uint    fec_r_buff_size;

} fec_t;

-- Zachary P. Landau kapheine@gmail.com

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