From: Finn Thain <fthain@telegraphics.com.au>
To: Michael Schmitz <schmitzmic@gmail.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Michael Schmitz <schmitz@mail.biophys.uni-duesseldorf.de>,
Andreas Schwab <schwab@linux-m68k.org>,
Linux/m68k <linux-m68k@vger.kernel.org>,
debian m68k <debian-68k@lists.debian.org>
Subject: Re: [PATCH 0/4] Atari kernel-in-FastRAM patches, take three
Date: Wed, 9 Apr 2014 16:44:39 +1000 (EST) [thread overview]
Message-ID: <alpine.LNX.2.00.1404091628270.17330@nippy.intranet> (raw)
In-Reply-To: <alpine.LNX.2.00.1404041704430.29768@nippy.intranet>
On Fri, 4 Apr 2014, I wrote:
> On Wed, 2 Apr 2014, Michael Schmitz wrote:
>
> > > It may be possible to boot Linux with MacOS running in 24-bit mode,
> > > and ISTR that this leads to a large number of memory chunks.
> >
> > The chunk size would still be 16 MB, perhaps?
>
> Looking at the Penguin source, findRAM() in Source/mmu_support.c sorts
> the boot info memory mappings so that the largest chunk comes first. In
> 32-bit mode, it will probably be the only chunk.
... but not always: Designing Cards & Drivers 3ed. p.28 says, "In the
Macintosh IIci and the Macintosh IIsi, physical memory is not in one
contiguous block, so the MMU of the 68030 joins the blocks of physical
memory to present contiguous logical memory to application software."
--
next prev parent reply other threads:[~2014-04-09 6:45 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-30 0:01 [PATCH 0/4] Atari kernel-in-FastRAM patches, take three Michael Schmitz
2014-03-30 0:01 ` [PATCH 1/4] m68k/atari - stram: alloc ST-RAM pool even if kernel not in ST-RAM Michael Schmitz
2014-03-30 19:11 ` Geert Uytterhoeven
2014-03-31 1:58 ` Michael Schmitz
2014-03-30 0:01 ` [PATCH 2/4] m68k/atari - atafb: convert allocation of fb ram to new interface Michael Schmitz
2014-03-30 19:11 ` Geert Uytterhoeven
2014-03-30 0:01 ` [PATCH 3/4] m68k/atari - ataflop: use correct virt/phys translation for DMA buffer Michael Schmitz
2014-03-31 7:46 ` Geert Uytterhoeven
2014-03-31 14:28 ` Jens Axboe
2014-03-30 0:01 ` [PATCH 4/4] m68k/atari - atari_scsi: " Michael Schmitz
2014-03-31 7:48 ` Geert Uytterhoeven
2014-03-30 22:34 ` [PATCH 0/4] Atari kernel-in-FastRAM patches, take three Andreas Schwab
2014-03-31 1:55 ` Michael Schmitz
2014-03-31 20:58 ` Andreas Schwab
2014-03-31 21:24 ` Michael Schmitz
2014-03-31 22:39 ` Andreas Schwab
2014-03-31 23:52 ` Michael Schmitz
2014-04-01 7:28 ` Geert Uytterhoeven
2014-04-01 7:45 ` schmitz
2014-04-01 7:50 ` Geert Uytterhoeven
2014-04-01 12:23 ` Finn Thain
2014-04-01 12:41 ` Geert Uytterhoeven
2014-04-01 18:56 ` Michael Schmitz
2014-04-04 6:12 ` Finn Thain
2014-04-09 6:44 ` Finn Thain [this message]
2014-04-04 3:43 ` Scott Holder
2014-04-04 6:08 ` Finn Thain
2014-04-01 7:24 ` Geert Uytterhoeven
2014-04-01 7:39 ` schmitz
2014-04-01 7:49 ` Geert Uytterhoeven
2014-04-01 8:12 ` schmitz
2014-04-01 8:23 ` Geert Uytterhoeven
2014-04-01 9:06 ` Andreas Schwab
2014-03-31 7:42 ` Geert Uytterhoeven
2014-03-31 7:54 ` Michael Schmitz
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