3. [EL3 runtime services framework](#3--el3-runtime-services-framework)
4. [Power State Coordination Interface](#4--power-state-coordination-interface)
5. [Secure-EL1 Payloads and Dispatchers](#5--secure-el1-payloads-and-dispatchers)
-6. [Crash Reporting in BL31](#6--crash-reporting-in-bl3-1)
+6. [Crash Reporting in BL31](#6--crash-reporting-in-bl31)
7. [Guidelines for Reset Handlers](#7--guidelines-for-reset-handlers)
8. [CPU specific operations framework](#8--cpu-specific-operations-framework)
9. [Memory layout of BL images](#9-memory-layout-of-bl-images)
images. The platform policy can be modified to allow additional images.
-11. Use of coherent memory in Trusted Firmware
-----------------------------------------------
+11. Use of coherent memory in Trusted Firmware
+-----------------------------------------------
There might be loss of coherency when physical memory with mismatched
shareability, cacheability and memory attributes is accessed by multiple CPUs
Contents :
-1. [Introduction](#1-introduction)
-2. [FWU Overview](#2-fwu-overview)
-3. [Image Identification](#3-image-identification)
-4. [FWU State Machine](#4-fwu-state-machine)
-5. [SMC Interface](#5-smc-interface)
+1. [Introduction](#1--introduction)
+2. [FWU Overview](#2--fwu-overview)
+3. [Image Identification](#3--image-identification)
+4. [FWU State Machine](#4--fwu-state-machine)
+5. [BL1 SMC Interface](#5--bl1-smc-interface)
- - - - - - - - - - - - - - - - - -
the TBBR.
-2. FWU Overview
----------------
+2. FWU Overview
+----------------
The FWU boot flow is primarily mediated by BL1. Since BL1 executes in ROM, and
it is usually desirable to minimize the amount of ROM code, the design allows
![Flow Diagram](diagrams/fwu_flow.png?raw=true)
-3. Image Identification
------------------------
+3. Image Identification
+------------------------
Each FWU image and certificate is identified by a unique ID, defined by the
platform, which BL1 uses to fetch an image descriptor (`image_desc_t`) via a
5. BL1 SMC Interface
------------------
+---------------------
### BL1_SMC_CALL_COUNT
- [Valid Routing Models](#113-valid-routing-models)
+ [Secure-EL1 Interrupts](#1131-secure-el1-interrupts)
+ [Non-secure Interrupts](#1132-non-secure-interrupts)
- + [EL3 interrupts](#1133-el3_interrupts)
+ + [EL3 interrupts](#1133-el3-interrupts)
- [Mapping of Interrupt Type to Signal](#114-mapping-of-interrupt-type-to-signal)
+ [Effect of mapping of several interrupt types to one signal](#1141-effect-of-mapping-of-several-interrupt-types-to-one-signal)
- [Assumptions in Interrupt Management Framework](#12-assumptions-in-interrupt-management-framework)