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path: root/bl31/bl31_main.c
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2014-05-06Remove variables from .data sectionDan Handley
Update code base to remove variables from the .data section, mainly by using const static data where possible and adding the const specifier as required. Most changes are to the IO subsystem, including the framework APIs. The FVP power management code is also affected. Delay initialization of the global static variable, next_image_type in bl31_main.c, until it is realy needed. Doing this moves the variable from the .data to the .bss section. Also review the IO interface for inconsistencies, using uintptr_t where possible instead of void *. Remove the io_handle and io_dev_handle typedefs, which were unnecessary, replacing instances with uintptr_t. Fixes ARM-software/tf-issues#107. Change-Id: I085a62197c82410b566e4698e5590063563ed304
2014-05-06Reduce deep nesting of header filesDan Handley
Reduce the number of header files included from other header files as much as possible without splitting the files. Use forward declarations where possible. This allows removal of some unnecessary "#ifndef __ASSEMBLY__" statements. Also, review the .c and .S files for which header files really need including and reorder the #include statements alphabetically. Fixes ARM-software/tf-issues#31 Change-Id: Iec92fb976334c77453e010b60bcf56f3be72bd3e
2014-05-06Always use named structs in header filesDan Handley
Add tag names to all unnamed structs in header files. This allows forward declaration of structs, which is necessary to reduce header file nesting (to be implemented in a subsequent commit). Also change the typedef names across the codebase to use the _t suffix to be more conformant with the Linux coding style. The coding style actually prefers us not to use typedefs at all but this is considered a step too far for Trusted Firmware. Also change the IO framework structs defintions to use typedef'd structs to be consistent with the rest of the codebase. Change-Id: I722b2c86fc0d92e4da3b15e5cab20373dd26786f
2014-03-05Generate build time and date message at link time.Jon Medhurst
So it updates each time a bootloader changes, not just when bl*_main.c files are recompiled. Fixes ARM-software/tf-issues#33 Change-Id: Ie8e1a7bd7e1913d2e96ac268606284f76af8c5ab 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
2014-02-20Add support for BL3-2 in BL3-1Achin Gupta
This patch adds the following support to the BL3-1 stage: 1. BL3-1 allows runtime services to specify and determine the security state of the next image after BL3-1. This has been done by adding the `bl31_set_next_image_type()` & `bl31_get_next_image_type()` apis. The default security state is non-secure. The platform api `bl31_get_next_image_info()` has been modified to let the platform decide which is the next image in the desired security state. 2. BL3-1 exports the `bl31_prepare_next_image_entry()` function to program entry into the target security state. It uses the apis introduced in 1. to do so. 3. BL3-1 reads the information populated by BL2 about the BL3-2 image into its internal data structures. 4. BL3-1 introduces a weakly defined reference `bl32_init()` to allow initialisation of a BL3-2 image. A runtime service like the Secure payload dispatcher will define this function if present. Change-Id: Icc46dcdb9e475ce6575dd3f9a5dc7a48a83d21d1
2014-02-17Add support for handling runtime service requestsJeenu Viswambharan
This patch uses the reworked exception handling support to handle runtime service requests through SMCs following the SMC calling convention. This is a giant commit since all the changes are inter-related. It does the following: 1. Replace the old exception handling mechanism with the new one 2. Enforce that SP_EL0 is used C runtime stacks. 3. Ensures that the cold and warm boot paths use the 'cpu_context' structure to program an ERET into the next lower EL. 4. Ensures that SP_EL3 always points to the next 'cpu_context' structure prior to an ERET into the next lower EL 5. Introduces a PSCI SMC handler which completes the use of PSCI as a runtime service Change-Id: I661797f834c0803d2c674d20f504df1b04c2b852 Co-authored-by: Achin Gupta <achin.gupta@arm.com>
2014-02-17Add runtime services frameworkAchin Gupta
This patch introduces the framework to enable registration and initialisation of runtime services. PSCI is registered and initialised as a runtime service. Handling of runtime service requests will be implemented in subsequent patches. Change-Id: Id21e7ddc5a33d42b7d6e455b41155fc5441a9547
2014-02-17Add context management libraryAchin Gupta
This patch adds support for a cpu context management library. This library will be used to: 1. Share pointers to secure and non-secure state cpu contexts between runtime services e.g. PSCI and Secure Payload Dispatcher services 2. Set SP_EL3 to a context structure which will be used for programming an ERET into a lower EL 3. Provide wrapper functions to save and restore EL3 & EL1 state. These functions will in turn use the helper functions in context.S Change-Id: I655eeef83dcd2a0c6f2eb2ac23efab866ac83ca0
2014-01-17Update year in copyright text to 2014Dan Handley
Change-Id: Ic7fb61aabae1d515b9e6baf3dd003807ff42da60
2013-12-12Make BL31's ns_entry_info a single-cpu areaSandrine Bailleux
ns_entry_info used to be a per-cpu array. This is a waste of space because it is only accessed by the primary CPU on the cold boot path. This patch reduces ns_entry_info to a single-cpu area. Change-Id: I647c70c4e76069560f1aaad37a1d5910f56fba4c
2013-12-05Enable third party contributionsDan Handley
- Add instructions for contributing to ARM Trusted Firmware. - Update copyright text in all files to acknowledge contributors. Change-Id: I9311aac81b00c6c167d2f8c889aea403b84450e5
2013-10-25ARMv8 Trusted Firmware release v0.2v0.2Achin Gupta