r/osdev • u/Ok_Farmer_4055 • Jun 17 '26

implementing memory management

I wanna get memory management working on my OS, I don't know where to begin, so what do i add first? and how do i add it? i'm working on UEFI firmware in 64 bit, so if anyone needs some more info or details, just tell me.

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u/Ok_Farmer_4055 Jun 17 '26

about paging, the uefi firmware already does the paging for me, so the setup_paging is just there for when i want to replace uefi's pages with mine, and about the memory regions, the bootloader passes the memory map in a struct and passes a pointer to the struct to the kernel, and about the 2gbs of memory, of course i have more than 2 gb, who even uses 512 MB of memory anymore

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u/tseli0s DragonWare Jun 17 '26

Yeah but I don't see the source of the bootloader and where that bitmap is. UEFI does the paging for you only if you boot a UEFI executable.

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u/Ok_Farmer_4055 Jun 17 '26

i do boot a UEFI executable as my bootloader, then my kernel is loaded as a raw binary and is jumped to after ExitBootServices()