Hi,I have some question on gdb-debugger with BDI2000.My board is like MPC8260ADS,ppcboot version is 2.0.0. I have programed ppcboot.bin into flash with BDI2000. After power on board ,information printed is below:

PPCBoot 2.0.0 (Jul 10 2005 - 11:54:35)

Rewin Tech :fengjunping && huangjianzhong

MPC8260 Reset Status: External Soft, External Hard

MPC8260 Clock Configuration - Bus-to-Core Mult 5x, VCO Div 2, 60x Bus Freq 20-60 , Core Freq 100-300

- dfbrg 0, corecnf 0x0b, busdf 5, cpmdf 1, plldf 0, pllmf 2

- vco_out 199999998, scc_clk 49999999, brg_clk 49999999

- cpu_clk 166666665, cpm_clk 99999999, bus_clk 33333333

CPU: MPC8260 (Rev 14, Mask unknown [immr=0x0064,k=0x002d]) at 166.666 MHz

Board: Motorola MPC8260ADS I2C: ready DRAM: 16 MB (stop here!)

Then ,cpu hangs!

When I debug source code with gdb,I am troubled with the problem below: I don't know where is wrong!

[root@localhost root]# cd ./ppcboot [root@localhost ppcboot]# ppc-linux-gdb ppcboot GNU gdb Yellow Dog Linux (5.2.1-4b_4) Copyright 2002 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "--host=i386-redhat-linux --target=ppc-linux"... (gdb) target remote 192.168.1.108:2001 Remote debugging using 192.168.1.108:2001 0xff812568 in crc32 (crc=1165264316, buf=0xff845760 '?' <repeats 200 times>..., len=239780) at crc32.c:166 166 DO8(buf); (gdb) b cpu_init_f Breakpoint 1 at 0xff803be8: file cpu_init.c, line 118. (gdb) cont Continuing. warning: Cannot insert breakpoint 1: Error accessing memory address 0xff803be8: Unknown error 4294967295. (gdb) run The program being debugged has been started already. Start it from the beginning? (y or n) n Program not restarted. (gdb) c Continuing.

Program received signal SIGSTOP, Stopped (signal). 0x00000800 in ?? () (gdb)

Below is the configure file for BDI2000.

; bdiGDB configuration file for myppc8250 board

; ----------------------------------------------

;

[INIT]

; init core register

WREG MSR 0x00000000;clear MSR

WM32 0xF00101A8 0xF0000000 ;IMMR : internal space @ 0xF0000000

WM32 0xF0010004 0xFFFFFFC3 ;SYPCR: disable watchdog

WM32 0xF0010C80 0x00000001 ;SCCR : normal operation

WM32 0xF0010000 0x02600000 ;SIUMCR

; init memory controller

WM32 0xF0010104 0xFF800836 ;OR0: Boot Rom 8

WM32 0xF0010100 0xFF801001 ;BR0: Flash @0xFF800000

WM32 0xF0010114 0xFF003080 ;OR2: SDRAM 16M,each chip organzied 512K*32bits*4banks,total two chips.

WM32 0xF0010110 0x00000041 ;BR2: SDRAM @0x0000000

; init SDRAM Init (PPC bus) WM16 0xF0010184 0x1900 ;MPTPR

WM8 0xF001019C 0x10 ;PSRT

WM32 0xF0010190 0x2869A452 ;PSDMR: Precharge all banks

WM8 0x00000000 0xFF ;Access SDRAM

WM32 0xF0010190 0x0869A452 ;PSDMR: CBR Refresh

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM8 0x00000000 0xFF ;Access SDRAM

WM32 0xF0010190 0x1869A452 ;PSDMR: Mode Set

WM8 0x00000000 0xFF ;Access SDRAM

WM32 0xF0010190 0x4069A452 ;PSDMR: enable refresh, normal

[TARGET]

CPUTYPE 8260 ;the CPU type (603EV,750,8240,8260)

JTAGCLOCK 0 ;use 16 MHz JTAG clock

BOOTADDR 0xFFF00100 ;boot address used for start-up break

;WORKSPACE 0x00000000 ;workspace in target RAM for fast download

BDIMODE AGENT ;the BDI working mode (LOADONLY | AGENT | GATEWAY)

BREAKMODE HARD ;SOFT or HARD, HARD uses PPC hardware breakpoints

;STEPMODE HWBP ;TRACE or HWBP, HWPB uses a hardware breakpoint

VECTOR CATCH ;catch unhandled exceptions

DCACHE NOFLUSH ;data cache flushing (FLUSH | NOFLUSH)

;MMU XLAT ;translate effective to physical addressa

;PTBASE 0x000000F0 ;here is the pointer to the page table pointers

POWERUP 5000 ;start delay after power-up detected in ms

[HOST]

IP 192.168.1.10

FILE /tftpboot/ppcboot

FORMAT ELF

LOAD MANUAL ;load code MANUAL or AUTO after reset

DEBUGPORT 2001

PROMPT MPC8260> ;new prompt for Telnet

[FLASH]

CHIPTYPE STRATAX16 ;Flash type (Intel E28F128J3A120)

CHIPSIZE 0x800000 ;The size of one flash chip in bytes(16MB)

BUSWIDTH 16 ;The width of the flash memory bus in bits

;WORKSPACE 0x00000000 ;workspace in SDRAM

FORMAT BIN 0x0

FILE /tftpboot/ppcboot.bin

ERASE 0xFF800000 CHIP ;erase whole chip

[REGS]

DMM1 0xF0000000 ;Internal Memory Map Base Address

FILE reg8260.def

Now, many people are still using ppcboot, please help me!

Thanks in advance!!

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