Integrate per-cpu support into BL31/BL32 by extending the following
areas:
Zero-initialization: Treats per-cpu sections like .bss and clears them
during early C runtime initialization. For platforms that enable
NUMA_AWARE_PER_CPU, invokes a platform hook to zero-initialize
node-specific per-cpu regions.
Cache maintenance: Extends the BL31 exit path to clean dcache lines
covering the per-cpu region, ensuring data written by the primary core
is visible to secondary cores.
tpidr_el3 setup: Initializes tpidr_el3 with the base address of the
current CPU’s per-cpu section. This allows per-cpu framework to
resolve local cpu accesses efficiently.
The percpu_data object is currently stored in tpidr_el3. Since the
per-cpu framework will use tpidr_el3 for this-cpu access, percpu_data
must be migrated to avoid conflict. This commit moves percpu_data to
the per-cpu framework.
Signed-off-by: Sammit Joshi <sammit.joshi@arm.com>
Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: Iff0c2e1f8c0ebd25c4bb0b09bfe15dd4fbe20561
The difference between AArch32 and AArch64 is insignificant and the
usage is identical. The only thing that required the use of assembly was
that the get_cpu_ops_ptr() function was not PCS compliant and needed a
wrapper to do that instead. That has now been fixed so move this to C so
it's more readable and more optimise-able by the compiler.
Change-Id: I5fcfe8ddb122dd35d58adc6d44a7484c5c595815
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
The assembly routines are opaque to the compiler and it can't inline
them. There is also no requirement for them to be called without a
stack - each of their calls has a stack available. So convert them to C
so that the compiler can do its inlining magic.
On AArch32 we need to be able to call _cpu_data from the entrypoint so
it has to stay as a slight exception.
We can also straighten out the type of the cpu_ops_ptr member so we
don't have to cast it everywhere.
Change-Id: I9c2939a955b396edf26b99ef36318eebeaab13e6
Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>
Align entire TF-A to use Arm in copyright header.
Change-Id: Ief9992169efdab61d0da6bd8c5180de7a4bc2244
Signed-off-by: Govindraj Raja <govindraj.raja@arm.com>
Enforce full include path for includes. Deprecate old paths.
The following folders inside include/lib have been left unchanged:
- include/lib/cpus/${ARCH}
- include/lib/el3_runtime/${ARCH}
The reason for this change is that having a global namespace for
includes isn't a good idea. It defeats one of the advantages of having
folders and it introduces problems that are sometimes subtle (because
you may not know the header you are actually including if there are two
of them).
For example, this patch had to be created because two headers were
called the same way: e0ea0928d5b7 ("Fix gpio includes of mt8173 platform
to avoid collision."). More recently, this patch has had similar
problems: 46f9b2c3a282 ("drivers: add tzc380 support").
This problem was introduced in commit 4ecca33988b9 ("Move include and
source files to logical locations"). At that time, there weren't too
many headers so it wasn't a real issue. However, time has shown that
this creates problems.
Platforms that want to preserve the way they include headers may add the
removed paths to PLAT_INCLUDES, but this is discouraged.
Change-Id: I39dc53ed98f9e297a5966e723d1936d6ccf2fc8f
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
To make software license auditing simpler, use SPDX[0] license
identifiers instead of duplicating the license text in every file.
NOTE: Files that have been imported by FreeBSD have not been modified.
[0]: https://spdx.org/
Change-Id: I80a00e1f641b8cc075ca5a95b10607ed9ed8761a
Signed-off-by: dp-arm <dimitris.papastamos@arm.com>
This patch moves the PSCI services and BL31 frameworks like context
management and per-cpu data into new library components `PSCI` and
`el3_runtime` respectively. This enables PSCI to be built independently from
BL31. A new `psci_lib.mk` makefile is introduced which adds the relevant
PSCI library sources and gets included by `bl31.mk`. Other changes which
are done as part of this patch are:
* The runtime services framework is now moved to the `common/` folder to
enable reuse.
* The `asm_macros.S` and `assert_macros.S` helpers are moved to architecture
specific folder.
* The `plat_psci_common.c` is moved from the `plat/common/aarch64/` folder
to `plat/common` folder. The original file location now has a stub which
just includes the file from new location to maintain platform compatibility.
Most of the changes wouldn't affect platform builds as they just involve
changes to the generic bl1.mk and bl31.mk makefiles.
NOTE: THE `plat_psci_common.c` FILE HAS MOVED LOCATION AND THE STUB FILE AT
THE ORIGINAL LOCATION IS NOW DEPRECATED. PLATFORMS SHOULD MODIFY THEIR
MAKEFILES TO INCLUDE THE FILE FROM THE NEW LOCATION.
Change-Id: I6bd87d5b59424995c6a65ef8076d4fda91ad5e86
