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2014-02-27Update Makefiles to get proper dependency checking working.tixy-issue-11Jon Medhurst
This change requires all platforms to now specify a list of source files rather than object files. New source files should preferably be specified by using the path as well and we should add this in the future for all files so we can remove use of vpath. This is desirable because vpath hides issues like the fact that BL2 currently pulls in a BL1 file bl1/aarch64/early_exceptions.S and if in the future we added bl2/aarch64/early_exceptions.S then it's likely only one of the two version would be used for both bootloaders. This change also removes the 'dump' build target and simply gets bootloaders to always generate a dump file. At the same time the -x option is added so the section headers and symbols table are listed. Fixes ARM-software/tf-issues#11 Signed-off-by: Jon Medhurst <tixy@linaro.org>
2014-02-26Implement late binding for runtime hooksJeenu Viswambharan
At present SPD power management hooks and BL3-2 entry are implemented using weak references. This would have the handlers bound and registered with the core framework at build time, but leaves them dangling if a service fails to initialize at runtime. This patch replaces implementation by requiring runtime handlers to register power management and deferred initialization hooks with the core framework at runtime. The runtime services are to register the hooks only as the last step, after having all states successfully initialized. Change-Id: Ibe788a2a381ef39aec1d4af5ba02376e67269782
2014-02-20Rework arithmetic operations in Test Secure PayloadAchin Gupta
This patch reworks the service provided by the TSP to perform common arithmetic operations on a set of arguments provided by the non-secure world. For a addition, division, subtraction & multiplication operation requested on two arguments in x0 and x1 the steps are: 1. TSPD saves the non-secure context and passes the operation and its arguments to the TSP. 2. TSP asks the TSPD to return the same arguments once again. This exercises an additional SMC path. 3. TSP now has two copies of both x0 and x1. It performs the operation on the corresponding copies i.e. in case of addition it returns x0+x0 and x1+x1. 4. TSPD receives the result, saves the secure context, restores the non-secure context and passes the result back to the non-secure client. Change-Id: I6eebfa2ae0a6f28b1d2e11a31f575c7a4b96724b Co-authored-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
2014-02-20Add power management support in the SPDAchin Gupta
This patch implements a set of handlers in the SPD which are called by the PSCI runtime service upon receiving a power management operation. These handlers in turn pass control to the Secure Payload image if required before returning control to PSCI. This ensures that the Secure Payload has complete visibility of all power transitions in the system and can prepare accordingly. Change-Id: I2d1dba5629b7cf2d53999d39fe807dfcf3f62fe2
2014-02-20Add Test Secure Payload Dispatcher (TSPD) serviceAchin Gupta
This patch adds the TSPD service which is responsible for managing communication between the non-secure state and the Test Secure Payload (TSP) executing in S-EL1. The TSPD does the following: 1. Determines the location of the TSP (BL3-2) image and passes control to it for initialization. This is done by exporting the 'bl32_init()' function. 2. Receives a structure containing the various entry points into the TSP image as a response to being initialized. The TSPD uses this information to determine how the TSP should be entered depending on the type of operation. 3. Implements a synchronous mechanism for entering into and returning from the TSP image. This mechanism saves the current C runtime context on top of the current stack and jumps to the TSP through an ERET instruction. The TSP issues an SMC to indicate completion of the previous request. The TSPD restores the saved C runtime context and resumes TSP execution. This patch also introduces a Make variable 'SPD' to choose the specific SPD to include in the build. By default, no SPDs are included in the build. Change-Id: I124da5695cdc510999b859a1bf007f4d049e04f3 Co-authored-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
2014-02-20Move PSCI to runtime services directoryAchin Gupta
This patch creates a 'services' directory and moves the PSCI under it. Other runtime services e.g. the Secure Payload Dispatcher service will be placed under the same directory in the future. Also fixes issue ARM-software/tf-issues#12 Change-Id: I187f83dcb660b728f82155d91882e961d2255068