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Harry Liebel [Thu, 12 Dec 2013 13:00:29 +0000 (13:00 +0000)]
Probe for GICv3 re-distributors on core bring-up
The GICv3 distributor can have more ports than CPUs are available in
the system. Probe all re-distributors and use the matching affinity
levels as specified by each core and re-distributor to decide which
re-distributor to use with which CPU core.
If a core cannot be matched with a re-distributor, the core panics and
is placed in an endless loop.
Change-Id: Ie393cfe07c7449a2383959e3c968664882e18afc
Harry Liebel [Tue, 14 Jan 2014 18:11:48 +0000 (18:11 +0000)]
Do not trap access to floating point registers
Traps when accessing architectural features are disabled by clearing bits
in CPTR_EL3 during early boot, including accesses to floating point
registers. The value of this register was previously undetermined, causing
unwanted traps to EL3. Future EL3 code (for example, context save/restore
code) may use floating point registers, although they are not used by current
code.
Also, the '-mgeneral-regs-only' flag is enabled in the GCC settings to
prevent generation of code that uses floating point registers.
Change-Id: I9a03675f6387bbbee81a6f2c9ccf81150db03747
Dan Handley [Tue, 14 Jan 2014 18:17:09 +0000 (18:17 +0000)]
Update year in copyright text to 2014
Change-Id: Ic7fb61aabae1d515b9e6baf3dd003807ff42da60
Dan Handley [Tue, 14 Jan 2014 13:20:12 +0000 (13:20 +0000)]
Refer to separate issue tracking repository
Update documentation to refer to separate issue tracking
repository, https://github.com/ARM-software/tf-issues/issues.
Change-Id: Ib1cef65b0da420bec58290d8743eb069b1226c96
Ian Spray [Thu, 2 Jan 2014 16:57:12 +0000 (16:57 +0000)]
Move GIC setup to a separate file
GIC setup code which used to be in bl31_plat_setup.c is now in fvp_gic.c
to simplify future changes to other bootloader stages. This patch moves
code from bl31_plat_setup.c to fvp_gic.c, simplifies the include file
list for bl31_plat_setup.c, moves GIC declarations from the bl31.h header
file into the platform.h, and reworks files according to coding style
guide.
Change-Id: I48d82a4ba33e7114dcc88f9ca98767a06cf8f417
Harry Liebel [Fri, 3 Jan 2014 14:18:15 +0000 (14:18 +0000)]
Build project with 'pedantic'
Tighten up ISO C standard checking. Fix 'CASSERT' implementation to
conform to C99 as opposed to GNU99 standard.
Change-Id: I58ddc61913617b66f11da5b6e3f7363136d5cf7d
Harry Liebel [Fri, 20 Dec 2013 18:51:12 +0000 (18:51 +0000)]
Do not let GCC use built-in functions
In order to reduce the software dependency on the compiler, the project
is now compiled with the '-ffreestanding' flag. This is to prevent GCC
from replacing functions with more optimised versions. An example is
where GCC replaces a simple printf() with a puts().
Change-Id: I1973fe6957cd708e8432a0039af9d50e037bd884
Sandrine Bailleux [Tue, 17 Dec 2013 13:47:14 +0000 (13:47 +0000)]
Fix SPSR register size in gp_regs structure
SPSR is a 32-bit register and so its size should be reflected in
the gp_regs structure. This patch fixes the type of gp_regs.spsr
to use a 32-bit variable. It also makes the size of the other
register fields more explicit.
Change-Id: I27e0367df1a91cc501d5217c1b3856d4097c60ba
Harry Liebel [Thu, 12 Dec 2013 16:03:44 +0000 (16:03 +0000)]
Local C library documentation updates
- Update porting guide to describe where files live and how to get
FreeBSD source code.
- Update change-log to describe relocation and new functions.
Change-Id: Id8f30cc7bafdd1064b3a5c5aae958c5aa3fb79f3
Harry Liebel [Thu, 12 Dec 2013 16:46:30 +0000 (16:46 +0000)]
Add strchr() and putchar() to local C library
Change-Id: I3659e119a242f8ef828e32bfdf5d0b4b7ac4f716
Harry Liebel [Tue, 17 Dec 2013 18:19:04 +0000 (18:19 +0000)]
Create local C library implementation (2/2)
- This change is split into two separate patches in order to
simplify the history as interpreted by 'git'. The split is
between the move/rename and addition of new files.
- Remove dependency on toolchain C library headers and functions in
order to ensure behavioural compatibility between toolchains.
- Use FreeBSD as reference for C library implementation.
- Do not let GCC use default library include paths.
- Remove unused definitions in modified headers and implementations.
- Move C library files to 'lib/stdlib' and 'include/stdlib'.
- Break std.c functions out into separate files.
Change-Id: I3e3d8d992052264d2a02489034ae4c03bf0f5512
Harry Liebel [Tue, 17 Dec 2013 18:31:42 +0000 (18:31 +0000)]
Create local C library implementation (1/2)
- This change is split into two separate patches in order to
simplify the history as interpreted by 'git'. The split is
between the move/rename and addition of new files.
- Remove dependency on toolchain C library headers and functions in
order to ensure behavioural compatibility between toolchains.
- Use FreeBSD as reference for C library implementation.
- Do not let GCC use default library include paths.
- Remove unused definitions in modified headers and implementations.
- Move C library files to 'lib/stdlib' and 'include/stdlib'.
- Break std.c functions out into separate files.
Change-Id: I91cddfb3229775f770ad781589670c57d347a154
Harry Liebel [Thu, 19 Dec 2013 13:30:58 +0000 (13:30 +0000)]
Add debug macros
- Add 'debug.h' with INFO, WARN and ERROR macros.
- This prints the specified message with the appropriate tag.
- INFO and WARN messages are only displayed when building with
the DEBUG flag set. Error messages are always printed.
Change-Id: I21835b6063fcc99649b30ac7489387cbd3705bc0
Sandrine Bailleux [Mon, 2 Dec 2013 15:57:09 +0000 (15:57 +0000)]
Make BL31's ns_entry_info a single-cpu area
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
Sandrine Bailleux [Mon, 2 Dec 2013 15:45:07 +0000 (15:45 +0000)]
BL2: Sanity check value in x0 in the entry point code
Change-Id: Icef68e314e6ba0f3694189b57f4b1dbbea5ba255
Sandrine Bailleux [Mon, 2 Dec 2013 15:41:25 +0000 (15:41 +0000)]
Move RUN_IMAGE constant from bl1.h to bl_common.h
RUN_IMAGE constant is used by all bootloader stages.
Change-Id: I1b4e28d8fcf3ad1363f202c859f5efab0f320efe
Sandrine Bailleux [Thu, 28 Nov 2013 14:55:58 +0000 (14:55 +0000)]
Remove useless copies of meminfo structures
Platform setup code has to reserve some memory for storing the
memory layout information. It is populated in early platform setup
code.
blx_get_sec_mem_layout() functions used to return a copy of this
structure. This patch modifies blx_get_sec_mem_layout() functions
so that they now directly return a pointer to their memory layout
structure. It ensures that the memory layout returned by
blx_get_sec_mem_layout() is always up-to-date and also avoids a
useless copy of the meminfo structure.
Also rename blx_get_sec_mem_layout() to blx_plat_sec_mem_layout()
to make it clear those functions are platform specific.
Change-Id: Ic7a6f9d6b6236b14865ab48a9f5eff545ce56551
Achin Gupta [Tue, 26 Nov 2013 15:34:12 +0000 (15:34 +0000)]
psci: update docs with status of cpu_suspend api
This patch makes changes to the documents to reflect the current
state of play of the psci cpu_suspend function.
Change-Id: I086509fb75111b6e9f93b7f6dbcd33cc4591b9f3
Achin Gupta [Mon, 2 Dec 2013 17:33:04 +0000 (17:33 +0000)]
psci: rectify and homogenise generic code
This patch performs a major rework of the psci generic implementation
to achieve the following:
1. replace recursion with iteration where possible to aid code
readability e.g. affinity instance states are changed iteratively
instead of recursively.
2. acquire pointers to affinity instance nodes at the beginning of a
psci operation. All subsequent actions use these pointers instead
of calling psci_get_aff_map_node() repeatedly e.g. management of
locks has been abstracted under functions which use these pointers
to ensure correct ordering. Helper functions have been added to
create these abstractions.
3. assertions have been added to cpu level handlers to ensure correct
state transition
4. the affinity level extents specified to various functions have the
same meaning i.e. start level is always less than the end level.
Change-Id: If0508c3a7b20ea3ddda2a66128429382afc3dfc8
Achin Gupta [Mon, 2 Dec 2013 16:23:12 +0000 (16:23 +0000)]
psci: rework cpu_off assertion and minor cleanups
This patch:
1. removes a duplicate assertion to check that the only error
condition that can be returned while turning a cpu off is
PSCI_E_DENIED. Having this assertion after calling
psci_afflvl_off() is sufficient.
2. corrects some incorrect usage of 'its' vs 'it is'
3. removes some unwanted white spaces
Change-Id: Icf014e269b54f5be5ce0b9fbe6b41258e4ebf403
Achin Gupta [Tue, 5 Nov 2013 11:10:38 +0000 (11:10 +0000)]
remove check on non-secure entrypoint parameter
In fvp_affinst_on/suspend, the non-secure entrypoint is always
expected to lie in the DRAM. This check will not be valid if
non-secure code executes directly out of flash e.g. a baremetal
test. This patch removes this check.
Change-Id: I0436e1138fc394aae8ff1ea59ebe38b46a440b61
Achin Gupta [Thu, 31 Oct 2013 11:27:43 +0000 (11:27 +0000)]
move timer #defines & remove duplicate declaration
This patch removes the duplicate declaration of psci_cpu_on in psci.h
and moves the constants for the system level implementation of the
generic timer from arch_helpers.h to arch.h. All other architectural
constants are defined in arch.h so there is no need to add them to
arch_helpers.h
Change-Id: Ia8ad3f91854f7e57fce31873773eede55c384ff1
Achin Gupta [Mon, 25 Nov 2013 18:45:02 +0000 (18:45 +0000)]
psci: fix error due to a non zero context id
In the previous psci implementation, the psci_afflvl_power_on_finish()
function would run into an error condition if the value of the context
id parameter in the cpu_on and cpu_suspend psci calls was != 0. The
parameter was being restored as the return value of the affinity level
0 finisher function. A non zero context id would be treated as an
error condition. This would prevent successful wake up of the cpu from
a power down state. Also, the contents of the general purpose
registers were not being cleared upon return to the non-secure world
after a cpu power up. This could potentially allow the non-secure
world to view secure data.
This patch ensures that all general purpose registers are set to ~0
prior to the final eret that drops the execution to the non-secure
world. The context id is used to initialize the general purpose
register x0 prior to re-entry into the non-secure world and is no
longer restored as a function return value. A platform helper
(platform_get_stack()) has been introduced to facilitate this change.
Change-Id: I2454911ffd75705d6aa8609a5d250d9b26fa097c
Achin Gupta [Sat, 26 Oct 2013 12:10:31 +0000 (13:10 +0100)]
psci: fix values of incorrectly defined constants
This patch fixes the following constant values in the psci.h:
1. The affinity level shift value in the power_state parameter of the
cpu_suspend psci call. The previous value was preventing shutdown
of the affinity level 1.
2. The values used for affinity state constants (ON, OFF,
ON_PENDING). They did not match the values expected to be returned
by the affinity_info psci api as mentioned in the spec.
3. The state id shift value in the power_state parameter of the
cpu_suspend psci call.
Change-Id: I62ed5eb0e9640b4aa97b93923d6630e6b877a097
Achin Gupta [Tue, 12 Nov 2013 16:40:00 +0000 (16:40 +0000)]
clear wakeup enable bit upon resuming from suspend
The FVP specific code that gets called after a cpu has been physically
powered on after having been turned off or suspended earlier does not
clear the PWRC.PWKUPR.WEN bit. Not doing so causes problems if: a cpu
is suspended, woken from suspend, powered down through a cpu_off call
& receives a spurious interrupt. Since the WEN bit is not cleared
after the cpu woke up from suspend, the spurious wakeup will power the
cpu on. Since the cpu_off call clears the jump address in the mailbox
this spurious wakeup will cause the cpu to crash.
This patch fixes this issue by clearing the WEN bit whenever a cpu is
powered up.
Change-Id: Ic91f5dffe1ed01d76bc7fc807acf0ecd3e38ce5b
Achin Gupta [Mon, 25 Nov 2013 14:00:56 +0000 (14:00 +0000)]
rework general purpose registers save and restore
The runtime exception handling assembler code used magic numbers for
saving and restoring the general purpose register context on stack
memory. The memory is interpreted as a 'gp_regs' structure and the
magic numbers are offsets to members of this structure. This patch
replaces the magic number offsets with constants. It also adds compile
time assertions to prevent an incorrect assembler view of this
structure.
Change-Id: Ibf125bfdd62ba3a33e58c5f1d71f8c229720781c
Dan Handley [Mon, 2 Dec 2013 19:25:12 +0000 (19:25 +0000)]
Enable third party contributions
- Add instructions for contributing to ARM Trusted Firmware.
- Update copyright text in all files to acknowledge contributors.
Change-Id: I9311aac81b00c6c167d2f8c889aea403b84450e5
Sandrine Bailleux [Wed, 27 Nov 2013 10:32:17 +0000 (10:32 +0000)]
Update user guide further to linker scripts changes
This patch updates the user guide section about the memory layout.
- Explain the verifications that the linker scripts does on the
global memory layout.
- Refer to the new linker symbols.
- Describe the linker symbols exported to the trusted firmware code.
Change-Id: I033ab2b867e8b9776deb4185b9986bcb8218f286
Sandrine Bailleux [Thu, 28 Nov 2013 09:43:06 +0000 (09:43 +0000)]
Properly initialise the C runtime environment
This patch makes sure the C runtime environment is properly
initialised before executing any C code.
- Zero-initialise NOBITS sections (e.g. the bss section).
- Relocate BL1 data from ROM to RAM.
Change-Id: I0da81b417b2f0d1f7ef667cc5131b1e47e22571f
Sandrine Bailleux [Wed, 27 Nov 2013 09:38:52 +0000 (09:38 +0000)]
Various improvements/cleanups on the linker scripts
- Check at link-time that bootloader images will fit in memory
at run time and that they won't overlap each other.
- Remove text and rodata orphan sections.
- Define new linker symbols to remove the need for platform setup
code to know the order of sections.
- Reduce the size of the raw binary images by cutting some sections
out of the disk image and allocating them at load time, whenever
possible.
- Rework alignment constraints on sections.
- Remove unused linker symbols.
- Homogenize linker symbols names across all BLs.
- Add some comments in the linker scripts.
Change-Id: I47a328af0ccc7c8ab47fcc0dc6e7dd26160610b9
Sandrine Bailleux [Wed, 20 Nov 2013 11:50:48 +0000 (11:50 +0000)]
Treat compiler, assembler and linker warnings as errors
Change-Id: I56284ebf63bef99de1beb4fd86e2d8b6a7962ac0
James Morrissey [Fri, 1 Nov 2013 13:56:59 +0000 (13:56 +0000)]
Generate build products in sub-directories
A single binary can be compiled using a command such as:
make CROSS_COMPILE=aarch64-none-elf- bl1
Also make use of brackets consistent in the Makefile.
Change-Id: I2180fdb473411ef7cffe39670a7b2de82def812e
Harry Liebel [Mon, 18 Nov 2013 16:05:21 +0000 (16:05 +0000)]
Increase default amount of RAM for Base FVPs in FDTs
- Large RAM-disks may have trouble starting with 2GB of memory.
- Increase from 2GB to 4GB in FDT.
Change-Id: I12c1b8e5db41114b88c69c48621cb21247a6a6a7
Sandrine Bailleux [Tue, 19 Nov 2013 17:14:22 +0000 (17:14 +0000)]
fvp: Remove call to bl2_get_ns_mem_layout() function
On FVP platforms, for now it is assumed that the normal-world
bootloader is already sitting in its final memory location.
Therefore, BL2 doesn't need to load it and so it doesn't need
to know the extents of the non-trusted DRAM.
Change-Id: I33177ab43ca242edc8958f2fa8d994e7cf3e0843
Sandrine Bailleux [Fri, 15 Nov 2013 14:46:44 +0000 (14:46 +0000)]
AArch64: Remove EL-agnostic TLB helper functions
Also, don't invalidate the TLBs in disable_mmu() function, it's better
to do it in enable_mmu() function just before actually enabling the
MMU.
Change-Id: Ib32d6660019b0b2c17254156aad4be67ab4970e1
Sandrine Bailleux [Mon, 18 Nov 2013 17:26:59 +0000 (17:26 +0000)]
Unmask SError and Debug exceptions.
Any asynchronous exception caused by the firmware should be handled
in the firmware itself. For this reason, unmask SError exceptions
(and Debug ones as well) on all boot paths. Also route external
abort and SError interrupts to EL3, otherwise they will target EL1.
Change-Id: I9c191d2d0dcfef85f265641c8460dfbb4d112092
Sandrine Bailleux [Mon, 28 Oct 2013 15:14:00 +0000 (15:14 +0000)]
fvp: Remove unnecessary initializers
Global and static variables are expected to be initialised to zero
by default. This is specified by the C99 standard. This patch
removes some unnecessary initialisations of such variables.
It fixes a compilation warning at the same time:
plat/fvp/bl31_plat_setup.c:82:3: warning: missing braces around
initializer [-Wmissing-braces]
section("tzfw_coherent_mem"))) = {0};
^
plat/fvp/bl31_plat_setup.c:82:3: warning: (near initialization for
‘ns_entry_info[0]’) [-Wmissing-braces]
Note that GCC should not have emitted this warning message in the
first place. The C Standard permits braces to be elided around
subaggregate initializers. See this GCC bug report:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53119
Change-Id: I13cb0c344feb9803bca8819f976377741fa6bc35
Sandrine Bailleux [Fri, 25 Oct 2013 14:33:39 +0000 (15:33 +0100)]
Fix inlining of GIC helper functions
Change-Id: I27aad560a5da21c0439f3ccc9dc07b026e7c6022
Sandrine Bailleux [Tue, 12 Nov 2013 16:41:16 +0000 (16:41 +0000)]
Move generic architectural setup out of blx_plat_arch_setup().
blx_plat_arch_setup() should only perform platform-specific
architectural setup, e.g. enabling the MMU. This patch moves
generic architectural setup code out of blx_plat_arch_setup().
Change-Id: I4ccf56b8c4a2fa84909817779a2d97a14aaafab6
James Morrissey [Tue, 29 Oct 2013 10:56:46 +0000 (10:56 +0000)]
Fix documentation issues in v0.2 release
Change-Id: I4e2a9daa97e3be3d2f53894f2ec7947ba6bb3a16
Harry Liebel [Tue, 5 Nov 2013 18:00:38 +0000 (18:00 +0000)]
Add Foundation FVP documentation
Change-Id: I5e47ba96e128d3a793517441f5a6c9f2ccbdfc66
Harry Liebel [Mon, 11 Nov 2013 13:24:47 +0000 (13:24 +0000)]
Add GICv3 ITS to FDTs
- The interrupt addresses need to be updated to work.
Change-Id: Icdd00177095ae9e4eb7b13718762f92e29b1465c
Harry Liebel [Wed, 30 Oct 2013 17:41:48 +0000 (17:41 +0000)]
Do not enable CCI on Foundation FVP
- The Foundation FVP only has one cluster and does not have
CCI.
Change-Id: If91e81ff72c52e448150089c4cfea3e4d6ae1232
Harry Liebel [Tue, 22 Oct 2013 16:29:14 +0000 (17:29 +0100)]
FDTs for v5.2 Foundation model
- The Foundation FVP is a cut down version of the Base FVP and as
such lacks some components.
- Three FDTs are provided.
fvp-foundation-gicv2legacy-psci:
Use this when setting the Foundation FVP to use GICv2. In this
mode the GIC is located at the VE location, as described in the
VE platform memory map.
fvp-foundation-gicv3-psci :
Use this when setting the Foundation FVP to use GICv3. In this
mode the GIC is located at the Base location, as described in the
Base platform memory map.
fvp-foundation-gicv2-psci :
Use this when setting the Foundation FVP to use GICv3, but Linux
is expected to use GICv2 emulation mode. In this mode the GIC is
located at the Base location, but the GICv3 is used in GICv2
emulation mode.
Change-Id: I9d69bcef35c64cc8f16550efe077f578e55aaae5
Harry Liebel [Fri, 25 Oct 2013 15:07:53 +0000 (16:07 +0100)]
Writing to the FVP LED register should be a 32bit access.
- Writing to this register with a 64bit access can cause a
Systen Error Exception on some models.
Change-Id: Ibcf5bdf7ab55707db61c16298f25caff50e1ff7e
Achin Gupta [Fri, 25 Oct 2013 08:08:21 +0000 (09:08 +0100)]
ARMv8 Trusted Firmware release v0.2