CODEWITHSUNDEEP
linux-kernelrambootdevice-tree
Sorcrer
Sorcrer

Reputation: 1644

Linux - dtb - RAM address and size passing via dtb to kernel

I'm a newbie to Linux So While booting linux on my "cutom embedded development board" I can see some log 

Memory: 405860K/509952K available (2604K kernel code, 188K rwdata, 1068K rodata, 164K init, 131K bss, 87708K reserved, 16384K cma-reserved)
176 Virtual kernel memory layout:

Which means Linux has detected 512MB of RAM,(Eventhough I have 2GB of RAM)

I assume this infomation needs to be passed dtb, can someone help me regarding how this information node looks like and how can I increase the size of it ?

Upvotes: 1

Views: 1335

Answers (1)

Prabhakar Lad
Prabhakar Lad

Reputation: 1438

You need to change the memory node, so that the linux can see the 2gb. you can refer this link. Also you might want to set CONFIG_VMSPLIT_2G

Upvotes: 1

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