Re: port-macppc/54432: powerpc mac mini detects only 512MB of 1GB memory

[Paul Goyette <paul%whooppee.com@localhost>]

The following reply was made to PR port-macppc/54432; it has been noted by GNATS.

From: Paul Goyette <paul%whooppee.com@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: port-macppc-maintainer%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
    netbsd-bugs%netbsd.org@localhost
Subject: Re: port-macppc/54432: powerpc mac mini detects only 512MB of 1GB
 memory
Date: Fri, 2 Aug 2019 10:37:34 -0700 (PDT)

 ...
 > 	One of my mac minis were recently upgraded to 9.0_BETA.
 > 	It has a 1GB DIMM installed, but NetBSD only probes 512MB.
 >
 > 	The start of dmesg shows this:
 >
 > NetBSD 9.0 (GRANNY-SMITH) #0: Fri Aug  2 14:23:09 CEST 2019
 >        he%granny-smith.urc.uninett.no@localhost:/usr/obj/sys/arch/macppc/compile/GRANNY-SMITH
 > total memory = 512 MB
 > avail memory = 482 MB
 > timecounter: Timecounters tick every 10.000 msec
 > Kernelized RAIDframe activated
 > found openpic PIC at 80040000
 > OpenPIC Version 1.2: Supports 4 CPUs and 64 interrupt sources.
 > bootpath: /pci@f4000000/ata-6@d/disk@0:0/netbsd
 > mainbus0 (root)
 > cpu0 at mainbus0: 7447A (Revision 1.5), ID 0 (primary)
 > cpu0: HID0 0x84d0c1bc<EMCP,TBEN,HIGH_BAT_EN,NAP,DPM,ICE,DCE,XBSEN,SGE,BTIC,LRSTK,FOLD,BHT>, powersave: 1
 > cpu0: 1500.00 MHz, 512KB L2 cache no parity
 > memory0 at mainbus0: len=128
 > spdmem0 at memory0
 > spdmem0: DDR SDRAM, no parity or ECC, 1GB, 400MHz (PC-3200)
 > spdmem0: 13 rows, 11 cols, 2 ranks, 4 banks/chip, 5.0ns cycle time
 > spdmem0: tAA-tRCD-tRP-tRAS: 2-3-3-8
 > spdmem0: voltage SSTL 2.5V, refresh time 7.8us (self-refreshing)
 ...
 
 Interestingly, even though it only detects 512MB of memory, the SPD
 data correctly shows the DIMM's capacity.
 
 
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