setup_mm_hdr(9)

💖 setup_mm_hdr(9) 💖

okay so welcome to the Kernel API Manual, bestie — this page is all about setup_mm_hdr(9), and it's lowkey iconic. 🫶

✨ NAME ✨

setup_mm_hdr — Allocate a buffer for StandAloneMM and initialize the header data. that's the whole assignment, no cap. 💅

🌸 SYNOPSIS 🌸

the signature is giving:

void * setup_mm_hdr (u8 **dptr , size_t payload_size , size_t func );

🎀 ARGUMENTS 🎀

• dptr — pointer address to store allocated buffer. bestie, this is the spot where the allocated buffer gets stored. 📍
• payload_size — payload size. literally the payload size, that's it. 📏
• func — standAloneMM function number. yep, the function number. 🔢

🔥 RETURN 🔥

returns a pointer to the corresponding StandAloneMM function buffer, or NULL. that's the tea. ☕

🦋 SEE ALSO 🦋

• Kernel file ./drivers/firmware/efi/stmm/tee_stmm_efi.c — the source file to peek at, iykyk. 👀
• tee_mm_communicate(9) — another one to check out. ✨
• mm_communicate(9) — yes bestie, this too. 💜
• get_max_payload(9) — and this one. periodt. 💅

mwah 💋 this page comes from ./drivers/firmware/efi/stmm, dated October 2026, and it's all about setup_mm_hdr(9). bye bestie, go allocate something cute 🫶🎀