intel_huc_auth(9)

💅 intel_huc_auth(9) — Kernel API Manual 💅

okay so bestie, welcome to the Kernel API Manual page for intel_huc_auth(9) — this one is lowkey all about getting the HuC uCode authenticated, and it’s giving “trust but verify” energy fr fr. ✨

🎀 NAME 🎀

intel_huc_auth — Authenticate HuC uCode 💖

🦋 SYNOPSIS 🦋

int intel_huc_auth (struct intel_huc *huc , enum
       intel_huc_authentication_type type );

💖 ARGUMENTS 💖

• huc — the intel_huc structure, aka the main character here 👑
• type — the authentication type, which is either via GuC or via GSC — pick your lane, bestie 💅

🌸 DESCRIPTION 🌸

okay so here’s the tea: this function gets called after HuC and GuC firmware loading during intel_uc_init_hw. 🫶

It invokes the GuC action to authenticate the HuC firmware, passing the offset of the RSA signature to intel_guc_auth_huc. Then it waits for up to 50ms for the firmware verification ACK. Yes bestie, 50ms — not me staring at the screen waiting for that ACK to slay. 😭

🌈 SEE ALSO 🌈

• Kernel file ./drivers/gpu/drm/i915/gt/uc/intel_huc.c
• HuC(9)
• HuC Memory Management(9)
• intel_huc_check_status(9)
• intel_huc_load_status(9)

Signed off from source/version ./drivers/gpu/drm/i915/gt/uc 💖 October 2026, for intel_huc_auth(9) — periodt. ✨