linux-kernel - Re: [RFC v4 03/25] m68k/atari: Move Atari-specific code out of drivers/char/nvram.c

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Message-ID: <20150723092114.GA10989@guido.earth.sol>
Date:	Thu, 23 Jul 2015 11:21:14 +0200
From:	"Christian T. Steigies" <cts@...ian.org>
To:	Finn Thain <fthain@...egraphics.com.au>
Cc:	Michael Schmitz <schmitzmic@...il.com>,
	Andreas Schwab <schwab@...ux-m68k.org>,
	linux-kernel@...r.kernel.org, linux-m68k@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [RFC v4 03/25] m68k/atari: Move Atari-specific code out of
 drivers/char/nvram.c

On Wed, Jul 22, 2015 at 02:22:21PM +1000, Finn Thain wrote:
> 
> Anyone with a suitable Atari, i.e. ATARIHW_PRESENT(TT_CLK), who can boot 
> both TOS and Linux could resolve the question. (Perhaps with an emulator?)
> 
> Any old kernel binary would do, since atari_scsi should print either 
> "HOSTID=n" or "this_id n" at startup.
> 
> If n doesn't agree with what TOS says about the host's SCSI ID, then I 
> think a trivial patch is safe enough. Especially if cat /proc/driver/nvram 
> produces a "SCSI host ID : m" that does agree with TOS.

root@...kin:~>cat /proc/hardware 
Model:          Atari Falcon
System Memory:  522752K
        510 MB at 0x01000000 (alternate RAM)
Detected hardware:
        Falcon Shifter
        Programmable Sound Generator
        PCM 8 Bit Sound
        CODEC Sound
        SCSI Controller NCR5380 (Falcon style)
        IDE Interface
        8/16 Mhz Switch for FDC
        Multi Function Peripheral MFP 68901
        Serial Communications Controller SCC 8530
        Paddle Interface
        DMA Controller for SCC
        Clock Chip MC146818A
        Blitter
        DSP56001 processor

root@...kin:~>dmesg |grep SCSI
[    0.000000] Atari hardware found: VIDEL STDMA-SCSI ST_MFP YM2149 PCM CODEC DSP56K SCC_DMA SCC ANALOG_JOY BLITTER IDE TT_CLK FDC_SPEED 
[    0.410000] SCSI subsystem initialized
[    0.850000] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)
[    4.230000] Atari SCSI: resetting the SCSI bus... done
[    6.750000] scsi host0: Atari native SCSI, io_port 0x0, n_io_port 0, base 0x0, irq 15, can_queue 8, cmd_per_lun 1, sg_tablesize 0, this_id 7, flags { }, options { REAL_DMA SUPPORT_TAGS } 

root@...kin:~>cat /proc/driver/nvram
Checksum status  : not valid
Boot preference  : 0xff (undefined)
SCSI arbitration : on
SCSI host ID     : 7
OS language      : 255 (undefined)
Keyboard language: 255 (undefined)
Date format      : 7 (undefined), 24h clock
Boot delay       : 255s
Video mode       : 4 colors, 40 columns, TV NTSC monitor
                   no overscan, compat. mode off


Let me know if you need more info.

Christian
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