This is current/amd64 on a macbook2,1 (dmesg below).
It has two RAM slots, each holding a 2GB module:
spdmem0 at iic0 addr 0x50: 2GB DDR2 SDRAM non-parity PC2-6400CL6 SO-DIMM
spdmem1 at iic0 addr 0x52: 2GB DDR2 SDRAM non-parity PC2-6400CL6 SO-DIMM
But of one of the 2GB, only 1GB is seen:
real mem = 3171909632 (3024MB)
I have tried swapping the mdules, it only happens
in one of the two slots. If I put a 1GB module in there,
the available memory is the same (in the other slot,
2GB is 2GB and 1GB is 1GB).
Why is this? Does it have anthing to do with
the memory map conflicts I see in the dmesg?
Jan
OpenBSD 6.7-current (GENERIC.MP) #0: Sat May 30 17:45:54 CEST 2020
h...@mb64.stare.cz:/usr/src/sys/arch/amd64/compile/GENERIC.MP
real mem = 3171909632 (3024MB)
avail mem = 3063046144 (2921MB)
random: good seed from bootblocks
mpath0 at root
scsibus0 at mpath0: 256 targets
mainbus0 at root
bios0 at mainbus0: SMBIOS rev. 2.4 @ 0xe0000 (37 entries)
bios0: vendor Apple Inc. version "MB21.88Z.00A5.B07.0706270922" date 06/27/07
bios0: Apple Inc. MacBook2,1
acpi0 at bios0: ACPI 3.0
acpi0: sleep states S0 S3 S4 S5
acpi0: tables DSDT FACP HPET APIC MCFG ASF! SBST ECDT SSDT SSDT SSDT
acpi0: wakeup devices ADP1(S3) LID0(S3) PXS1(S4) PXS2(S4) USB1(S3) USB2(S3)
USB3(S3) USB4(S3) USB7(S3) EC__(S3)
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpihpet0 at acpi0: 14318179 Hz
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz, 2161.59 MHz, 06-0f-06
cpu0:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF,SENSOR,MELTDOWN
cpu0: 4MB 64b/line 16-way L2 cache
cpu0: smt 0, core 0, package 0
mtrr: Pentium Pro MTRR support, 8 var ranges, 88 fixed ranges
cpu0: apic clock running at 166MHz
cpu0: mwait min=64, max=64, C-substates=0.2.2.2.2, IBE
cpu1 at mainbus0: apid 1 (application processor)
cpu1: Intel(R) Core(TM)2 CPU T7400 @ 2.16GHz, 2161.28 MHz, 06-0f-06
cpu1:
FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE,SSE3,DTES64,MWAIT,DS-CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,NXE,LONG,LAHF,PERF,SENSOR,MELTDOWN
cpu1: 4MB 64b/line 16-way L2 cache
cpu1: smt 0, core 1, package 0
ioapic0 at mainbus0: apid 1 pa 0xfec00000, version 20, 24 pins, remapped
acpimcfg0 at acpi0
acpimcfg0: addr 0xf0000000, bus 0-255
acpiec0 at acpi0
acpiprt0 at acpi0: bus 0 (PCI0)
acpiprt1 at acpi0: bus 1 (RP01)
acpiprt2 at acpi0: bus 2 (RP02)
acpiprt3 at acpi0: bus 3 (PCIB)
acpicpu0 at acpi0: !C3(100@55 mwait@0x31), !C2(500@1 mwait@0x10), C1(1000@1
mwait), PSS
acpicpu1 at acpi0: !C3(100@55 mwait@0x31), !C2(500@1 mwait@0x10), C1(1000@1
mwait), PSS
acpisbs0 at acpi0: SBS0 model "ASMB016" serial 19351 type LION oem "DP"
acpiac0 at acpi0: AC unit online
acpibtn0 at acpi0: LID0
"APP0002" at acpi0 not configured
acpibtn1 at acpi0: PWRB
acpibtn2 at acpi0: SLPB
acpipci0 at acpi0 PCI0: 0x00000010 0x00000011 0x00000000memory map conflict
0xbef00000/0x100000
memory map conflict 0xbf000000/0x1000000
memory map conflict 0xf00f8000/0x1000
memory map conflict 0xfed1c000/0x4000
memory map conflict 0xfffb0000/0x30000
extent `acpipci0 pcibus' (0x0 - 0xff), flags=0
extent `pciio' (0x0 - 0xffffffff), flags=0
0x10000 - 0xffffffff
extent `pcimem' (0x0 - 0xffffffffffffffff), flags=0
0x0 - 0xbfffffff
0xf0000000 - 0xf3ffffff
0xfec00000 - 0xfec00fff
0xfed14000 - 0xfed19fff
0xfed1c000 - 0xfed1ffff
0xfee00000 - 0xfee00fff
0xffe00000 - 0xffffffff
0x40000000000 - 0xffffffffffffffff
"APP0001" at acpi0 not configured
"APP0003" at acpi0 not configured
"ACPI0001" at acpi0 not configured
acpicmos0 at acpi0
acpivideo0 at acpi0: GFX0
cpu0: Enhanced SpeedStep 2161 MHz: speeds: 2167, 2000, 1833, 1667, 1500, 1333,
1000 MHz
pci0 at mainbus0 bus 0
pchb0 at pci0 dev 0 function 0 "Intel 82945GM Host" rev 0x03
inteldrm0 at pci0 dev 2 function 0 "Intel 82945GM Video" rev 0x03
drm0 at inteldrm0
intagp0 at inteldrm0
agp0 at intagp0: aperture at 0xc0000000, size 0x10000000
inteldrm0: apic 1 int 16, I945GM, gen 3
"Intel 82945GM Video" rev 0x03 at pci0 dev 2 function 1 not configured
vendor "Intel", unknown product 0x27a3 (class DASP subclass Time and Frequency,
rev 0x03) at pci0 dev 7 function 0 not configured
azalia0 at pci0 dev 27 function 0 "Intel 82801GB HD Audio" rev 0x02: msi
azalia0: codecs: Sigmatel STAC9220/1
audio0 at azalia0
ppb0 at pci0 dev 28 function 0 "Intel 82801GB PCIE" rev 0x02: msi
pci1 at ppb0 bus 1
mskc0 at pci1 dev 0 function 0 "Marvell Yukon 88E8053" rev 0x22, Yukon-2 EC
rev. A3 (0x2): apic 1 int 16
msk0 at mskc0 port A: address 00:1b:63:36:2b:5d
eephy0 at msk0 phy 0: 88E1111 Gigabit PHY, rev. 2
ppb1 at pci0 dev 28 function 1 "Intel 82801GB PCIE" rev 0x02: msi
pci2 at ppb1 bus 2
athn0 at pci2 dev 0 function 0 "Atheros AR5418" rev 0x01: apic 1 int 17
athn0: MAC AR5418 rev 2, RF AR5133 (2T3R), ROM rev 4, address 00:1c:b3:c4:b2:ae
uhci0 at pci0 dev 29 function 0 "Intel 82801GB USB" rev 0x02: apic 1 int 21
uhci1 at pci0 dev 29 function 1 "Intel 82801GB USB" rev 0x02: apic 1 int 19
uhci2 at pci0 dev 29 function 2 "Intel 82801GB USB" rev 0x02: apic 1 int 18
uhci3 at pci0 dev 29 function 3 "Intel 82801GB USB" rev 0x02: apic 1 int 16
ehci0 at pci0 dev 29 function 7 "Intel 82801GB USB" rev 0x02: apic 1 int 21
usb0 at ehci0: USB revision 2.0
uhub0 at usb0 configuration 1 interface 0 "Intel EHCI root hub" rev 2.00/1.00
addr 1
ppb2 at pci0 dev 30 function 0 "Intel 82801BAM Hub-to-PCI" rev 0xe2
pci3 at ppb2 bus 3
"AT&T/Lucent FW322 1394" rev 0x61 at pci3 dev 3 function 0 not configured
pcib0 at pci0 dev 31 function 0 "Intel 82801GBM LPC" rev 0x02
pciide0 at pci0 dev 31 function 1 "Intel 82801GB IDE" rev 0x02: DMA, channel 0
configured to compatibility, channel 1 configured to compatibility
atapiscsi0 at pciide0 channel 0 drive 0
scsibus1 at atapiscsi0: 2 targets
cd0 at scsibus1 targ 0 lun 0: <MATSHITA, DVD-R UJ-857E, ZB0E> removable
cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 4
pciide0: channel 1 disabled (no drives)
pciide1 at pci0 dev 31 function 2 "Intel 82801GBM SATA" rev 0x02: DMA, channel
0 configured to native-PCI, channel 1 configured to native-PCI
pciide1: using apic 1 int 19 for native-PCI interrupt
wd0 at pciide1 channel 0 drive 1: <ST980811AS>
wd0: 16-sector PIO, LBA48, 76319MB, 156301488 sectors
wd0(pciide1:0:1): using PIO mode 4, Ultra-DMA mode 6
ichiic0 at pci0 dev 31 function 3 "Intel 82801GB SMBus" rev 0x02: apic 1 int 19
iic0 at ichiic0
iic0: addr 0x48 00=3c 01=00 02=4b 03=50 words 00=3c00 01=00ff 02=4b00 03=5000
04=ffff 05=ffff 06=ffff 07=ffff
spdmem0 at iic0 addr 0x50: 2GB DDR2 SDRAM non-parity PC2-6400CL6 SO-DIMM
spdmem1 at iic0 addr 0x52: 2GB DDR2 SDRAM non-parity PC2-6400CL6 SO-DIMM
usb1 at uhci0: USB revision 1.0
uhub1 at usb1 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb2 at uhci1: USB revision 1.0
uhub2 at usb2 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb3 at uhci2: USB revision 1.0
uhub3 at usb3 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
usb4 at uhci3: USB revision 1.0
uhub4 at usb4 configuration 1 interface 0 "Intel UHCI root hub" rev 1.00/1.00
addr 1
isa0 at pcib0
isadma0 at isa0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
asmc0 at isa0 port 0x300/32: rev 1.17f517, 226 keys
vmm0 at mainbus0: VMX (using slow L1TF mitigation)
uvideo0 at uhub0 port 4 configuration 1 interface 0 "Micron Built-in iSight"
rev 2.00/1.84 addr 2
uvideo0: can't find interface assoc descriptor
ugen0 at uhub0 port 4 configuration 1 "Micron Built-in iSight" rev 2.00/1.84
addr 2
uhidev0 at uhub1 port 2 configuration 1 interface 0 "Apple Computer Apple
Internal Keyboard / Trackpad" rev 2.00/0.18 addr 2
uhidev0: iclass 3/1
ukbd0 at uhidev0: 8 variable keys, 5 key codes, country code 13
wskbd0 at ukbd0: console keyboard
uhidev1 at uhub1 port 2 configuration 1 interface 1 "Apple Computer Apple
Internal Keyboard / Trackpad" rev 2.00/0.18 addr 2
uhidev1: iclass 3/1, 5 report ids
ums0 at uhidev1 reportid 2: 3 buttons
wsmouse0 at ums0 mux 0
ums1 at uhidev1 reportid 5
ums1: mouse has no X report
uhidev2 at uhub1 port 2 configuration 1 interface 2 "Apple Computer Apple
Internal Keyboard / Trackpad" rev 2.00/0.18 addr 2
uhidev2: iclass 3/0
uhid0 at uhidev2: input=1, output=0, feature=0
uhidev3 at uhub3 port 2 configuration 1 interface 0 "Apple Computer, Inc. IR
Receiver" rev 2.00/1.10 addr 2
uhidev3: iclass 3/0, 38 report ids
uhid1 at uhidev3 reportid 36: input=4, output=0, feature=0
uhid2 at uhidev3 reportid 37: input=4, output=0, feature=0
uhid3 at uhidev3 reportid 38: input=4, output=0, feature=0
uhidev4 at uhub4 port 1 configuration 1 interface 0 "Apple Computer HID-proxy"
rev 2.00/19.65 addr 2
uhidev4: iclass 3/1
ukbd1 at uhidev4: 8 variable keys, 6 key codes
wskbd1 at ukbd1 mux 1
uhidev5 at uhub4 port 1 configuration 1 interface 1 "Apple Computer HID-proxy"
rev 2.00/19.65 addr 2
uhidev5: iclass 3/1
ums2 at uhidev5: 5 buttons
wsmouse1 at ums2 mux 0
vscsi0 at root
scsibus2 at vscsi0: 256 targets
softraid0 at root
scsibus3 at softraid0: 256 targets
root on wd0a (31e6463adc99e6ba.a) swap on wd0b dump on wd0b
inteldrm0: 1280x800, 32bpp
wsdisplay0 at inteldrm0 mux 1: console (std, vt100 emulation), using wskbd0
wskbd1: connecting to wsdisplay0
wsdisplay0: screen 1-5 added (std, vt100 emulation)
