From a06ae8609b3dd06b957a6e4e965772a8a14d3af5 Mon Sep 17 00:00:00 2001 From: Pratik Patel Date: Mon, 3 Nov 2014 11:07:35 -0700 Subject: coresight: add CoreSight core layer framework CoreSight components are compliant with the ARM CoreSight architecture specification and can be connected in various topologies to suit a particular SoC tracing needs. These trace components can generally be classified as sources, links and sinks. Trace data produced by one or more sources flows through the intermediate links connecting the source to the currently selected sink. The CoreSight framework provides an interface for the CoreSight trace drivers to register themselves with. It's intended to build up a topological view of the CoreSight components and configure the correct serie of components on user input via sysfs. For eg., when enabling a source, the framework builds up a path consisting of all the components connecting the source to the currently selected sink(s) and enables all of them. The framework also supports switching between available sinks and provides status information to user space applications through the debugfs interface. Signed-off-by: Pratik Patel Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- arch/arm/Kconfig.debug | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch') diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 03dc4c1a8736..cd3890e3110e 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -1331,4 +1331,13 @@ config DEBUG_SET_MODULE_RONX against certain classes of kernel exploits. If in doubt, say "N". +menuconfig CORESIGHT + bool "CoreSight Tracing Support" + select ARM_AMBA + help + This framework provides a kernel interface for the CoreSight debug + and trace drivers to register themselves with. It's intended to build + a topological view of the CoreSight components based on a DT + specification and configure the right serie of components when a + trace source gets enabled. endmenu -- cgit v1.2.3-58-ga151