Bootloader 8xxrom on ADS860, gcc 2.95

Bootloader 8xxrom on ADS860, gcc 2.95

[Ruedi.Hofer]

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Hi

I'm using almost the standard 8xxrom bootloader on my ADS860 board.

When I cross compile it on my I386 Linux host using the egcs-2.91, it works ok.

When I cross compile it on my I386 Linux host using the gcc 2.95.2, it doesn't work.
That means, it always crashes like:

-----
8xxROM 0.3.0

compiletime options:
board: ADS DRAM_25MHZ
disk: DISK_ATA PCMCIABUG

cpu: XPC860xxZPnnA3 at 25 MHz: 4Kbyte icache 4Kbyte dcache

<warning: cpu core has silicon bugs, check the errata>

board: ADS rev A - warning, read errata
flash: 2 Mbytes, delay 90 ns
dram: 32 Mbyte, 70 ns, OK
pcmcia: 5V and 3V
pcsr = 0x0070fe70

ATA disk: 'SunDisk SDP'.

Boot device list:ata.c : Card Not Ready 0x0

disk: No disk found.
NIP: 00000000 XER: E0004A7F LR: FE004604 REGS: 01fefb80 TRAP: 1000
MSR: 00001002 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00

GPR00: 00000000 01FEFC70 FE004310 00000000 00000001 01FEFC88 FFFFFFFB 01FEFE10
GPR08: 00000000 FE00B264 00000000 00012600 01FEFD48 1011AFB0 000125C0 00000000
GPR16: 00000000 00000000 00000002 FE010000 00009032 000125B8 00010000 C0002544
GPR24: 00000002 00000001 00000001 01FF0000 01FEFEE8 FF002FDC 01FEFF08 01FEFEA8
Call backtrace:
Software Emulation Exception
-----

Did someone encounter the same problem??

Maybe the gcc 2.95 does some better optimisations!

Cheers, Ruedi

Re: Bootloader 8xxrom on ADS860, gcc 2.95

[Dan A. Dickey]

Ruedi.Hofer@ascom.ch wrote:
>
> Hi

Hi Ruedi

> I'm using almost the standard 8xxrom bootloader on my ADS860 board.
>
> When I cross compile it on my I386 Linux host using the egcs-2.91, it works ok.
>
> When I cross compile it on my I386 Linux host using the gcc 2.95.2, it doesn't work.
> That means, it always crashes like:
>
> -----
> 8xxROM 0.3.0
>
> compiletime options:
> board: ADS DRAM_25MHZ
> disk: DISK_ATA PCMCIABUG
>
> cpu: XPC860xxZPnnA3 at 25 MHz: 4Kbyte icache 4Kbyte dcache
>
> <warning: cpu core has silicon bugs, check the errata>
>
> board: ADS rev A - warning, read errata
> flash: 2 Mbytes, delay 90 ns
> dram: 32 Mbyte, 70 ns, OK
> pcmcia: 5V and 3V
> pcsr = 0x0070fe70
>
> ATA disk: 'SunDisk SDP'.
>
> Boot device list:ata.c : Card Not Ready 0x0
>
> disk: No disk found.
> NIP: 00000000 XER: E0004A7F LR: FE004604 REGS: 01fefb80 TRAP: 1000
> MSR: 00001002 EE: 0 PR: 0 FP: 0 ME: 1 IR/DR: 00
>
> GPR00: 00000000 01FEFC70 FE004310 00000000 00000001 01FEFC88 FFFFFFFB 01FEFE10
> GPR08: 00000000 FE00B264 00000000 00012600 01FEFD48 1011AFB0 000125C0 00000000
> GPR16: 00000000 00000000 00000002 FE010000 00009032 000125B8 00010000 C0002544
> GPR24: 00000002 00000001 00000001 01FF0000 01FEFEE8 FF002FDC 01FEFF08 01FEFEA8
> Call backtrace:
> Software Emulation Exception
> -----
>
> Did someone encounter the same problem??

Not the same problem, but something that may be quite similar.
Yesterday I encountered a problem with the "disk: No disk found."
message.  Well, not with the message per se, but with not finding
any disks.  In this case, 8xxrom still tries to prompt you, but the
file_cwd (I think - this was about 24 hours ago) was not set, so
the prompt tried to print "rom:0:              "  with the spacing
continuing on for several lines until the machine crashed.
And, I am using egcs-2.95.2 to compile for my 850.
	-Dan

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