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Age	Commit message (Collapse)	Author
2014-07-28	Rework the crash reporting in BL3-1 to use less stack	Soby Mathew
	This patch reworks the crash reporting mechanism to further optimise the stack and code size. The reporting makes use of assembly console functions to avoid calling C Runtime to report the CPU state. The crash buffer requirement is reduced to 64 bytes with this implementation. The crash buffer is now part of per-cpu data which makes retrieving the crash buffer trivial. Also now panic() will use crash reporting if invoked from BL3-1. Fixes ARM-software/tf-issues#199 Change-Id: I79d27a4524583d723483165dc40801f45e627da5
2014-07-25	Implement a leaner printf for Trusted Firmware	Soby Mathew
	This patch implements a "tf_printf" which supports only the commonly used format specifiers in Trusted Firmware, which uses a lot less stack space than the stdlib printf function. Fixes ARM-software/tf-issues#116 Change-Id: I7dfa1944f4c1e634b3e2d571f49afe02d109a351
2014-05-16	Rework BL3-1 unhandled exception handling and reporting	Soby Mathew
	This patch implements the register reporting when unhandled exceptions are taken in BL3-1. Unhandled exceptions will result in a dump of registers to the console, before halting execution by that CPU. The Crash Stack, previously called the Exception Stack, is used for this activity. This stack is used to preserve the CPU context and runtime stack contents for debugging and analysis. This also introduces the per_cpu_ptr_cache, referenced by tpidr_el3, to provide easy access to some of BL3-1 per-cpu data structures. Initially, this is used to provide a pointer to the Crash stack. panic() now prints the the error file and line number in Debug mode and prints the PC value in release mode. The Exception Stack is renamed to Crash Stack with this patch. The original intention of exception stack is no longer valid since we intend to support several valid exceptions like IRQ and FIQ in the trusted firmware context. This stack is now utilized for dumping and reporting the system state when a crash happens and hence the rename. Fixes ARM-software/tf-issues#79 Improve reporting of unhandled exception Change-Id: I260791dc05536b78547412d147193cdccae7811a