• Harinarayan Bhatta's avatar
    arm: omap5: Add TEE loading support · 57de1ea5
    Harinarayan Bhatta authored
    secure_tee_install is used to install and initialize a secure TEE OS such as
    Linaro OP-TEE into the secure world. This function takes in the address
    where the signed TEE image is loaded as an argument. The signed TEE image
    consists of a header (struct tee_header), TEE code+data followed by the
    signature generated using image signing tool from TI security development
    package (SECDEV). Refer to README.ti-secure for more information.
    
    This function uses 2 new secure APIs.
    
    1. PPA_SERV_HAL_TEE_LOAD_MASTER - Must be called on CPU Core 0. Protected
       memory for TEE must be reserved before calling this function. This API
       needs arguments filled into struct ppa_tee_load_info. The TEE image is
       authenticated and if there are no errors, the control passes to the TEE
       entry point.
    
    2. PPA_SERV_HAL_TEE_LOAD_SLAVE - Called on other CPU cores only after
       a TEE_LOAD_MASTER call. Takes no arguments. Checks if TEE was
       successfully loaded (on core 0) and transfers control to the same TEE
       entry point.
    
    The code at TEE entry point is expected perform OS initialization steps
    and return back to non-secure world (U-Boot).
    Signed-off-by: default avatarHarinarayan Bhatta <harinarayan@ti.com>
    Signed-off-by: default avatarAndrew F. Davis <afd@ti.com>
    Reviewed-by: default avatarTom Rini <trini@konsulko.com>
    57de1ea5
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