2014-05-23 |
Add enable mmu platform porting interfaces
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Previously, the enable_mmu_elX() functions were implicitly part of
the platform porting layer since they were included by generic
code. These functions have been placed behind 2 new platform
functions, bl31_plat_enable_mmu() and bl32_plat_enable_mmu().
These are weakly defined so that they can be optionally overridden
by platform ports.
Also, the enable_mmu_elX() functions have been moved to
lib/aarch64/xlat_tables.c for optional re-use by platform ports.
These functions are tightly coupled with the translation table
initialization code.
Fixes ARM-software/tf-issues#152
Change-Id: I0a2251ce76acfa3c27541f832a9efaa49135cc1c
Dan Handley
authored
on 16 May 2014
Achin Gupta
committed
on 23 May 2014
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Split platform.h into separate headers
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Previously, platform.h contained many declarations and definitions
used for different purposes. This file has been split so that:
* Platform definitions used by common code that must be defined
by the platform are now in platform_def.h. The exact include
path is exported through $PLAT_INCLUDES in the platform makefile.
* Platform definitions specific to the FVP platform are now in
/plat/fvp/fvp_def.h.
* Platform API declarations specific to the FVP platform are now
in /plat/fvp/fvp_private.h.
* The remaining platform API declarations that must be ported by
each platform are still in platform.h but this file has been
moved to /include/plat/common since this can be shared by all
platforms.
Change-Id: Ieb3bb22fbab3ee8027413c6b39a783534aee474a
Dan Handley
authored
on 14 May 2014
Achin Gupta
committed
on 23 May 2014
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Remove extern keyword from function declarations
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Function declarations implicitly have external linkage so do not
need the extern keyword.
Change-Id: Ia0549786796d8bf5956487e8996450a0b3d79f32
Dan Handley
authored
on 14 May 2014
Andrew Thoelke
committed
on 23 May 2014
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Merge pull request #102 from achingupta:ag/tf-issues#104-v2
Andrew Thoelke
committed
on 23 May 2014
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2014-05-22 |
Use secure timer to generate S-EL1 interrupts
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This patch adds support in the TSP to program the secure physical
generic timer to generate a EL-1 interrupt every half second. It also
adds support for maintaining the timer state across power management
operations. The TSPD ensures that S-EL1 can access the timer by
programming the SCR_EL3.ST bit.
This patch does not actually enable the timer. This will be done in a
subsequent patch once the complete framework for handling S-EL1
interrupts is in place.
Change-Id: I1b3985cfb50262f60824be3a51c6314ce90571bc
Achin Gupta
committed
on 22 May 2014
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Merge pull request #91 from linmaonly/lin_dev
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Address issue 156: 64-bit addresses get truncated
Andrew Thoelke
committed
on 22 May 2014
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2014-05-20 |
Address issue 156: 64-bit addresses get truncated
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Addresses were declared as "unsigned int" in drivers/arm/peripherals/pl011/pl011.h and in function init_xlation_table. Changed to use "unsigned long" instead
Fixes ARM-software/tf-issues#156
Lin Ma
committed
on 20 May 2014
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2014-05-16 |
Rework BL3-1 unhandled exception handling and reporting
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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
Soby Mathew
committed
on 16 May 2014
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2014-05-08 |
Merge pull request #58 from athoelke/optimise-cache-flush-v2
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Optimise data cache clean/invalidate operation v2
danh-arm
committed
on 8 May 2014
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2014-05-07 |
Optimise data cache clean/invalidate operation
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The data cache clean and invalidate operations dcsw_op_all()
and dcsw_op_loius() were implemented to invoke a DSB and ISB
barrier for every set/way operation. This adds a substantial
performance penalty to an already expensive operation.
These functions have been reworked to provide an optimised
implementation derived from the code in section D3.4 of the
ARMv8 ARM. The helper macro setup_dcsw_op_args has been moved
and reworked alongside the implementation.
Fixes ARM-software/tf-issues#146
Change-Id: Icd5df57816a83f0a842fce935320a369f7465c7f
Andrew Thoelke
committed
on 7 May 2014
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Remove unused or invalid asm helper functions
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There are a small number of non-EL specific helper functions
which are no longer used, and also some unusable helper
functions for non-existant registers.
This change removes all of these functions.
Change-Id: Idd656cef3b59cf5c46fe2be4029d72288b649c24
Andrew Thoelke
committed
on 7 May 2014
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Access system registers directly in assembler
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Instead of using the system register helper functions to read
or write system registers, assembler coded functions should
use MRS/MSR instructions. This results in faster and more
compact code.
This change replaces all usage of the helper functions with
direct register accesses.
Change-Id: I791d5f11f257010bb3e6a72c6c5ab8779f1982b3
Andrew Thoelke
committed
on 7 May 2014
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Replace disable_mmu with assembler version
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disable_mmu() cannot work as a C function as there is no control
over data accesses generated by the compiler between disabling and
cleaning the data cache. This results in reading stale data from
main memory.
As assembler version is provided for EL3, and a variant that also
disables the instruction cache which is now used by the BL1
exception handling function.
Fixes ARM-software/tf-issues#147
Change-Id: I0cf394d2579a125a23c2f2989c2e92ace6ddb1a6
Andrew Thoelke
committed
on 7 May 2014
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Correct usage of data and instruction barriers
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The current code does not always use data and instruction
barriers as required by the architecture and frequently uses
barriers excessively due to their inclusion in all of the
write_*() helper functions.
Barriers should be used explicitly in assembler or C code
when modifying processor state that requires the barriers in
order to enable review of correctness of the code.
This patch removes the barriers from the helper functions and
introduces them as necessary elsewhere in the code.
PORTING NOTE: check any port of Trusted Firmware for use of
system register helper functions for reliance on the previous
barrier behaviour and add explicit barriers as necessary.
Fixes ARM-software/tf-issues#92
Change-Id: Ie63e187404ff10e0bdcb39292dd9066cb84c53bf
Andrew Thoelke
committed
on 7 May 2014
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2014-05-06 |
Remove variables from .data section
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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
Dan Handley
committed
on 6 May 2014
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Reduce deep nesting of header files
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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
Dan Handley
committed
on 6 May 2014
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Always use named structs in header files
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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
Dan Handley
committed
on 6 May 2014
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Make use of user/system includes more consistent
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Make codebase consistent in its use of #include "" syntax for
user includes and #include <> syntax for system includes.
Fixes ARM-software/tf-issues#65
Change-Id: If2f7c4885173b1fd05ac2cde5f1c8a07000c7a33
Dan Handley
committed
on 6 May 2014
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Move include and source files to logical locations
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Move almost all system include files to a logical sub-directory
under ./include. The only remaining system include directories
not under ./include are specific to the platform. Move the
corresponding source files to match the include directory
structure.
Also remove pm.h as it is no longer used.
Change-Id: Ie5ea6368ec5fad459f3e8a802ad129135527f0b3
Dan Handley
committed
on 6 May 2014
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2014-04-24 |
Add TrustZone (TZC-400) driver
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The TZC-400 performs security checks on transactions to memory or
peripherals. Separate regions can be created in the address space each
with individual security settings.
Limitations:
This driver does not currently support raising an interrupt on access
violation.
Change-Id: Idf8ed64b4d8d218fc9b6f9d75acdb2cd441d2449
Harry Liebel
committed
on 24 Apr 2014
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2014-03-26 |
Place assembler functions in separate sections
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This extends the --gc-sections behaviour to the many assembler
support functions in the firmware images by placing each function
into its own code section. This is achieved by creating a 'func'
macro used to declare each function label.
Fixes ARM-software/tf-issues#80
Change-Id: I301937b630add292d2dec6d2561a7fcfa6fec690
Andrew Thoelke
committed
on 26 Mar 2014
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2014-03-21 |
Remove partially qualified asm helper functions
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Each ARM Trusted Firmware image should know in which EL it is running
and it should use the corresponding register directly instead of reading
currentEL and knowing which asm register to read/write
Change-Id: Ief35630190b6f07c8fbb7ba6cb20db308f002945
Vikram Kanigiri
authored
on 11 Mar 2014
Dan Handley
committed
on 21 Mar 2014
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2014-03-20 |
Rework bakery lock with WFE/SEV sequence
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Current implementation of Bakery Lock does tight-loop waiting upon lock
contention.
This commit reworks the implementation to use WFE instruction for
waiting, and SEV to signal lock availability. It also adds the rationale
for choosing Bakery Locks instead of exclusion primitives, and more
comments for the lock algorithm.
Fixes ARM-software/tf-issue#67
Change-Id: Ie351d3dbb27ec8e64dbc9507c84af07bd385a7df
Co-authored-by: Vikram Kanigiri <vikram.kanigiri@arm.com>
Jeenu Viswambharan
authored
on 13 Mar 2014
Dan Handley
committed
on 20 Mar 2014
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2014-03-05 |
Add generic functions for setting up aarch64 MMU translation tables
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Change-Id: I5b8d040ebc6672e40e4f13925e2fd5bc124103f4
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Jon Medhurst
authored
on 24 Jan 2014
Dan Handley
committed
on 5 Mar 2014
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Fix assert in bakery_lock_release()
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bakery_lock_release() expects an mpidr as the first argument however
bakery_lock_release() is calling it with the 'entry' argument it has
calculated. Rather than fixing this to pass the mpidr value it would be
much more efficient to just replace the call with
assert(bakery->owner == entry)
As this leaves no remaining users of bakery_lock_held(), we might as
well delete it.
Fixes ARM-software/tf-issues#27
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Jon Medhurst
authored
on 6 Feb 2014
Dan Handley
committed
on 5 Mar 2014
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2014-02-20 |
Fix semihosting with latest toolchain
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Fixes issues #10:
https://github.com/ARM-software/tf-issues/issues/10
This patch changes all/most variables of type int to be size_t or long
to fix the sizing and alignment problems found when building with the
newer toolchains such as Linaro GCC 13.12 or later.
Change-Id: Idc9d48eb2ff9b8c5bbd5b227e6907263d1ea188b
Signed-off-by: Ryan Harkin <ryan.harkin@linaro.org>
Ryan Harkin
authored
on 10 Feb 2014
Dan Handley
committed
on 20 Feb 2014
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Factor out translation table setup in ARM FVP port
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This patch factors out the ARM FVP specific code to create MMU
translation tables so that it is possible for a boot loader stage to
create a different set of tables instead of using the default ones.
The default translation tables are created with the assumption that
the calling boot loader stage executes out of secure SRAM. This might
not be true for the BL3_2 stage in the future.
A boot loader stage can define the `fill_xlation_tables()` function as
per its requirements. It returns a reference to the level 1
translation table which is used by the common platform code to setup
the TTBR_EL3.
This patch is a temporary solution before a larger rework of
translation table creation logic is introduced.
Change-Id: I09a075d5da16822ee32a411a9dbe284718fb4ff6
Achin Gupta
authored
on 9 Feb 2014
Dan Handley
committed
on 20 Feb 2014
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2014-02-17 |
Add support for handling runtime service requests
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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>
Jeenu Viswambharan
authored
on 6 Feb 2014
Dan Handley
committed
on 17 Feb 2014
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Implement load_image in terms of IO abstraction
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The modified implementation uses the IO abstraction rather than
making direct semi-hosting calls. The semi-hosting driver is now
registered for the FVP platform during initialisation of each boot
stage where it is used. Additionally, the FVP platform includes a
straightforward implementation of 'plat_get_image_source' which
provides a generic means for the 'load_image' function to determine
how to access the image data.
Change-Id: Ia34457b471dbee990c7b3c79de7aee4ceea51aa6
James Morrissey
authored
on 10 Feb 2014
Dan Handley
committed
on 17 Feb 2014
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Add IO abstraction framework
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This is intended primarily for use as a storage abstraction.
It allows operations such as image-loading to be implemented
in a platform-independent fashion. Each platform registers
a set of IO drivers during initialisation. The platform must
also provide a function that will return a device and a specifier
that can be used to access specified content.
Clients of the API will primarily use device and entity handles.
The term "entity" is deliberately vague, to allow for different
representations of content accessed using different types of
specifier, but will often be interpreted as a "file" where the
specifier will normally be its path.
This commit builds, but is intended to be paired with a sample
implementation of "load_image" using a semi-hosting driver on FVP.
Change-Id: Id3b52f1c0eb9ce76b44b99fc6b6460803668cc86
James Morrissey
authored
on 10 Feb 2014
Dan Handley
committed
on 17 Feb 2014
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