meson_sm_call_write(9)

📦 version 7.3.1, in nixpkgs unstable

💅 meson_sm_call_write(9) — send data to secure-monitor ✨

okay so bestie, this is meson_sm_call_write(9) from the Kernel API Manual, and it's literally your little gateway for sending data over to the secure-monitor. 🫶 It's giving "kernel firmware helper, but make it communicate." No cap.

🌸 NAME 🌸

meson_sm_call_write — send data to secure-monitor

✨ SYNOPSIS ✨

int meson_sm_call_write (struct meson_sm_firmware *fw , void *buffer ,
unsigned int size , unsigned int cmd_index , u32 arg0 , u32 arg1 , u32
arg2 , u32 arg3 , u32 arg4 );

🧚 ARGUMENTS 🧚

  • fw — Pointer to secure-monitor firmware 💖
  • buffer — Buffer containing data to send 🎀
  • size — Size of the data to send ✨
  • cmd_index — Index of the SMC32 function ID 🔥
  • arg0 — SMC32 Argument 0 🍓
  • arg1 — SMC32 Argument 1 🦋
  • arg2 — SMC32 Argument 2 💜
  • arg3 — SMC32 Argument 3 🌈
  • arg4 — SMC32 Argument 4 👑

💫 RETURN 💫

On success, you get the size of sent data back — that's the win. 🎉 On error? You get a negative value, bestie, so check that before you start celebrating. 😭

🌈 SEE ALSO 🌈

Kernel file: ./drivers/firmware/meson/meson_sm.c

This page is sourced from ./drivers/firmware/meson and stamped October 2026. Periodt, bestie. 💅🎀

📦 where this page comes from