Boot Linux 2.4.25 on MPC8270 board errors.

[onetarget at sina.com]

Dear all,
    I am now using ELDK 3.1.1 to build Linux-2.4.25 for
an MPC8270 board. The board has 128MB SDRAM, and in fcc_enet.c
    I configured the followings,
#define FCC_ENET_RX_PAGES    32 /*16 */
#define FCC_ENET_RX_FRSIZE    2048
#define FCC_ENET_RX_FRPPG    (PAGE_SIZE / FCC_ENET_RX_FRSIZE)
#define RX_RING_SIZE        (FCC_ENET_RX_FRPPG * FCC_ENET_RX_PAGES)
#define TX_RING_SIZE        128 /*16    /* Must be power of two */
#define TX_RING_MOD_MASK    127 /*15    /*   for this to work */
    but when boot the image, I got following errors.
   
Register rtc driver 1.0 successfully!
eth0: FCC1 ENET Version 0.4, 00:08:02:06:00:00
eth0: Phy @ 0x10, type LXT971 (0x001378e2)
Oops: kernel access of bad area, sig: 11
NIP: C01E93B8 XER: 00000000 LR: C01E9288 SP: C03BDED0 REGS: c03bde20 TRAP: 0300    Not tainted
MSR: 00009032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
DAR: 00000000, DSISR: 22000000
TASK = c03bc000[1] 'swapper' Last syscall: 120
last math 00000000 last altivec 00000000
GPR00: 00000000 C03BDED0 C03BC000 F000B0C0 88888888 00000000 F000B0DC 00000000
GPR08: 00000200 00000000 00000000 000005F0 84004044 10052210 07FE2000 007FFF10
GPR16: 00000001 00000000 007FFF00 FFFFFFFF 003FF000 00000000 07F7FBF8 C00A1BA0
GPR24: C01F2C2C C01D0B5C F00119C0 C7FCB000 C03BE600 00000000 FFFFFFFF F0008500
Call backtrace:
C01A78C0 C01E8DD8 C01E77E8 C01E7824 C01E9BC4 C01E73A4 C01E0624
C00039D0 C00081B8
Kernel panic: Attempted to kill init!
    My question is, what should I set the above values??
    Thank you and regards,
    W.Target

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