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| -rw-r--r-- | Documentation/driver-api/firmware/other_interfaces.rst | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/driver-api/firmware/other_interfaces.rst b/Documentation/driver-api/firmware/other_interfaces.rst new file mode 100644 index 000000000..b81794e0c --- /dev/null +++ b/Documentation/driver-api/firmware/other_interfaces.rst @@ -0,0 +1,45 @@ +Other Firmware Interfaces +========================= + +DMI Interfaces +-------------- + +.. kernel-doc:: drivers/firmware/dmi_scan.c + :export: + +EDD Interfaces +-------------- + +.. kernel-doc:: drivers/firmware/edd.c + :internal: + +Intel Stratix10 SoC Service Layer +--------------------------------- +Some features of the Intel Stratix10 SoC require a level of privilege +higher than the kernel is granted. Such secure features include +FPGA programming. In terms of the ARMv8 architecture, the kernel runs +at Exception Level 1 (EL1), access to the features requires +Exception Level 3 (EL3). + +The Intel Stratix10 SoC service layer provides an in kernel API for +drivers to request access to the secure features. The requests are queued +and processed one by one. ARM’s SMCCC is used to pass the execution +of the requests on to a secure monitor (EL3). + +.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h + :functions: stratix10_svc_command_code + +.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h + :functions: stratix10_svc_client_msg + +.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h + :functions: stratix10_svc_command_config_type + +.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h + :functions: stratix10_svc_cb_data + +.. kernel-doc:: include/linux/firmware/intel/stratix10-svc-client.h + :functions: stratix10_svc_client + +.. kernel-doc:: drivers/firmware/stratix10-svc.c + :export: |