Real memory question

[JonathanLee]

Hello fellow Netgate community members,

Is this correct for the 2100?

I thought the real memory was 4GB the values are showing this on boot up…

[JonathanLee]

I know ARC and top show the actual full memory but I can never get them to add up to the correct binary memory value.

[JonathanLee]

[JonathanLee]

My goal is to get it to add up to 4GB binary value. Anyone ever try to do that?

[JonathanLee]

[JonathanLee]

[JonathanLee]

[stephenw10]

Yes, that's the expected value in the 2100:

real memory = 3602862080 (3435 MB)
avail memory = 3462533120 (3302 MB)

The memory map from the SoC provides 32bit access so it sees 3.6GB.

Steve

[JonathanLee]

Anyone else know any wicked ram memory commands for freeBSD let me know.

[serbus]

@JonathanLee

Hello!

Something like...

dmidecode -t memory | egrep "Maximum Capacity|Number Of Devices|Size|Type:"

...can be useful.

John

[JonathanLee]

Oooo this one is good too

grep memory off of a sysctl -a....

[JonathanLee]

@serbus said in Real memory question:

dmidecode -t memory | egrep "Maximum Capacity|Number Of Devices|Size|Type:"

Dang that one didn't work on arm for me

[JonathanLee]

and you got your GUI monitor nice one..

[stephenw10]

There are some things you can see from uboot. Firstly that at boot it reports:

Model: Silicom Rogue-2
       CPU     1200 [MHz]
       L2      800 [MHz]
       TClock  200 [MHz]
       DDR     750 [MHz]
DRAM:  3.4 GiB

You can check the board info:

Marvell>> bdinfo
arch_number = 0x00000000
boot_params = 0x00000100
DRAM bank   = 0x00000000
-> start    = 0x00000000
-> size     = 0x04000000
DRAM bank   = 0x00000001
-> start    = 0x05400000
-> size     = 0x7AC00000
DRAM bank   = 0x00000002
-> start    = 0x80000000
-> size     = 0x40000000
DRAM bank   = 0x00000003
-> start    = 0xC0000000
-> size     = 0x10000000
DRAM bank   = 0x00000004
-> start    = 0xE0000000
-> size     = 0x08000000
baudrate    = 115200 bps
TLB addr    = 0x7FFF0000
relocaddr   = 0x7FF36000
reloc off   = 0x7FF36000
irq_sp      = 0x7F623350
sp start    = 0x7F623350
Early malloc usage: 228 / 2000
fdt_blob = 000000007f623360

And adding up those sizes gives 0xD6C00000 = 3602907136 = 3.6GB = 3.35GiB