In message <A3E34B558F5CD211B4980008C7A4A99003C5853B at sparrow.gso.mcs.marconi.com> you wrote: > > That is covered in the [INIT] section. I have that correct or I would not > have been able to debug my bootrom using gdb, read/write memory, etc. I can > do all that without any problem, and if all I wanted was to debug the > bootrom I would be all set.
Umm... this depends a lot on how you work. Many people tend to put full initialization (for instance including the memory controller) in the config file. Istead, I use always minimal config files. > What I am having trouble with is getting it to download the compressed > kernel image. You should be aware that it's not a trivial task to boot Linux from the BDI2000; you not only need to get all hardware initialization correct, you also have to prepare and pass a data structure with all necessary parameters (board info struct, ramdisk address and size, command line etc.) to the Linux kernel. Why are you trying to do this? Use your firmware to initialize the hardware, and to load and boot the Linux kernel. This is MUCH easier... > Specifically, I was hoping to see what was in the [TARGET], [FLASH], and > [HOST] sections of a correct .cnf file for debugging the kernel. I must > either have an offset incorrect, or not have something enabled, or something > similar. That seems to be where my problem is....in that dozen or so lines > at the end of the cnf file. OK, here is a generic config file I use on many MPC8xx systems: ----- cut here ----- [INIT] ; init core register WREG MSR 0x00001002 ;MSR : ME,RI WSPR 27 0x00001002 ;SRR1 : ME,RI WSPR 149 0x2002000F ;DER : set debug enable register WSPR 638 0xFFF00000 ;IMMR : internal memory at 0xFFF00000 WSPR 158 0x00000007 ;ICTRL: ; init SIU register WM32 0xFFF00000 0x00010400 ;SIUMCR WM32 0xFFF00004 0xFFFFFF89 ;SYPCR [TARGET] MMU XLAT ; support virtual addresses (for Linux!) PTBASE 0x000000F0 ; ptr to page table pointers CPUCLOCK 45000000 ;the CPU clock rate after processing the init list BDIMODE AGENT ;the BDI working mode (LOADONLY | AGENT) BREAKMODE HARD ;SOFT or HARD, HARD uses PPC hardware breakpoints [HOST] IP 10.0.0.8 LOAD MANUAL ;load code MANUAL or AUTO after reset DEBUGPORT 2001 START 0x0100 [FLASH] CHIPTYPE AM29BX16 ;Flash type (AM29LV160B) CHIPSIZE 0x200000 ;The size of one flash chip in bytes BUSWIDTH 32 ;The width of the flash memory bus in bits (8 | 16 | 32) WORKSPACE 0xFFF02000 ; RAM buffer for fast flash programming [REGS] DMM1 0xFFF00000 FILE BDI2000/reg8xx.def ----- cut here ----- As you can see, it does not contain any specific stuff to load or program files (I always feed those in manually, or using some expect scripts). Wolfgang Denk -- Software Engineering: Embedded and Realtime Systems, Embedded Linux Phone: (+49)-8142-4596-87 Fax: (+49)-8142-4596-88 Email: wd at denx.de It usually takes more than three weeks to prepare a good impromptu speech. - Mark Twain ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
