qcom_scm_ocmem_lock(9)

✨ qcom_scm_ocmem_lock(9) ✨

okay so bestie, this page is from the Kernel API Manual, and the main character is qcom_scm_ocmem_lock(9). it's giving firmware-girl realness: this is the call to the OCMEM lock interface that assigns an OCMEM region to the initiator you specify. no cap. 🦋

💖 NAME 💖

qcom_scm_ocmem_lock — call OCMEM lock interface to assign an OCMEM region to the specified initiator.

🌸 SYNOPSIS 🌸

int qcom_scm_ocmem_lock (enum qcom_scm_ocmem_client id , u32 offset ,
       u32 size , u32 mode );

🎀 ARGUMENTS 🎀

• id — tz initiator id. this is the initiator ID from tz, periodt.
• offset — OCMEM offset. literally the offset into OCMEM.
• size — OCMEM size. how much OCMEM we're talking about.
• mode — access mode (WIDE/NARROW). pick your mode, bestie.

🦋 SEE ALSO 🦋

the kernel file is ./drivers/firmware/qcom/qcom_scm.c, and here's the whole squad of related references — yes, all of them, we're not skipping anybody:

• struct qcom_scm_qseecom_resp(9)
• qcom_scm_call(9)
• qcom_scm_call_atomic(9)
• qcom_scm_set_warm_boot_addr(9)
• qcom_scm_set_cold_boot_addr(9)
• qcom_scm_cpu_power_down(9)
• qcom_scm_is_pas_available(9)
• qcom_scm_restore_sec_cfg_available(9)
• qcom_scm_assign_mem(9)
• qcom_scm_ocmem_lock_available(9)
• qcom_scm_ocmem_unlock(9)
• qcom_scm_ice_available(9)
• qcom_scm_ice_invalidate_key(9)
• qcom_scm_ice_set_key(9)
• qcom_scm_derive_sw_secret(9)
• qcom_scm_generate_ice_key(9)
• qcom_scm_prepare_ice_key(9)
• qcom_scm_import_ice_key(9)
• qcom_scm_hdcp_available(9)
• qcom_scm_hdcp_req(9)
• qcom_scm_qseecom_call(9)
• qcom_scm_qseecom_get_version(9)
• qcom_scm_qseecom_app_get_id(9)
• qcom_scm_qseecom_app_send(9)
• qcom_scm_qtee_invoke_smc(9)
• qcom_scm_qtee_callback_response(9)
• qcom_scm_is_available(9)

xoxo, your local Unix bestie 💅 — page source/version: ./drivers/firmware/qcom; date: October 2026; page: qcom_scm_ocmem_lock(9). 🫶