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Qualcomm remote processor may rely on Static and Dynamic resources for it to be functional. Static resources are fixed like for example, memory-mapped addresses required by the subsystem and dynamic resources, such as shared memory in DDR etc., are determined at runtime during the boot process. For most of the Qualcomm SoCs, when run with Gunyah or older QHEE hypervisor, all the resources whether it is static or dynamic, is managed by the hypervisor. Dynamic resources if it is present for a remote processor will always be coming from secure world via SMC call while static resources may be present in remote processor firmware binary or it may be coming qcom_scm_pas_get_rsc_table() SMC call along with dynamic resources. Some of the remote processor drivers, such as video, GPU, IPA, etc., do not check whether resources are present in their remote processor firmware binary. In such cases, the caller of this function should set input_rt and input_rt_size as NULL and zero respectively. Remoteproc framework has method to check whether firmware binary contain resources or not and they should be pass resource table pointer to input_rt and resource table size to input_rt_size and this will be forwarded to TrustZone for authentication. TrustZone will then append the dynamic resources and return the complete resource table in the passed output buffer. More about documentation on resource table format can be found in include/linux/remoteproc.h Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> Link: https://lore.kernel.org/r/20260105-kvmrprocv10-v10-11-022e96815380@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> |
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