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fix(spm_mm): do not compile if SVE/SME is enabled

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As spm_mm cannot handle SVE/SME usage in NS world so its better to give
compilation error when ENABLE_SVE_FOR_NS=1 or ENABLE_SME_FOR_NS=1.

Signed-off-by: Manish Pandey <manish.pandey2@arm.com>
Change-Id: I69dbb272ca681bb020501342008eda20d4c0b096
This commit is contained in:
Manish Pandey 2021-11-15 15:29:08 +00:00
parent 3015267f60
commit 4333f95bed
3 changed files with 13 additions and 6 deletions
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6
docs/components/secure-partition-manager-mm.rst
View File

@ -134,8 +134,8 @@ Interface). This will be referred to as the *Standalone MM Secure Partition* in
the rest of this document.
To enable SPM support in TF-A, the source code must be compiled with the build
flag ``SPM_MM=1``, along with ``EL3_EXCEPTION_HANDLING=1``. On Arm
platforms the build option ``ARM_BL31_IN_DRAM`` must be set to 1. Also, the
flag ``SPM_MM=1``, along with ``EL3_EXCEPTION_HANDLING=1`` and ``ENABLE_SVE_FOR_NS=0``.
On Arm platforms the build option ``ARM_BL31_IN_DRAM`` must be set to 1. Also, the
location of the binary that contains the BL32 image
(``BL32=path/to/image.bin``) must be specified.
@ -148,7 +148,7 @@ image in the FIP:
.. code:: shell
BL32=path/to/standalone/mm/sp BL33=path/to/bl33.bin \
make PLAT=fvp SPM_MM=1 EL3_EXCEPTION_HANDLING=1 ARM_BL31_IN_DRAM=1 all fip
make PLAT=fvp SPM_MM=1 EL3_EXCEPTION_HANDLING=1 ENABLE_SVE_FOR_NS=0 ARM_BL31_IN_DRAM=1 all fip
Describing Secure Partition resources
-------------------------------------

7
docs/getting_started/build-options.rst
View File

@ -305,8 +305,8 @@ Common build options
ENABLE_SME_FOR_SWD=1 will cause SME, SVE, and FPU/SIMD instructions in secure
world to trap to EL3. SME is an optional architectural feature for AArch64
and TF-A support is experimental. At this time, this build option cannot be
used on systems that have SPD=spmd or ENABLE_RME, and attempting to build
with these options will fail. Default is 0.
used on systems that have SPD=spmd/SPM_MM or ENABLE_RME, and attempting to
build with these options will fail. Default is 0.
- ``ENABLE_SME_FOR_SWD``: Boolean option to enable the Scalable Matrix
Extension for secure world use along with SVE and FPU/SIMD, ENABLE_SME_FOR_NS
@ -329,7 +329,8 @@ Common build options
compatible with the ``CTX_INCLUDE_FPREGS`` build option, and will raise an
assert on platforms where SVE is implemented and ``ENABLE_SVE_FOR_NS`` set to
1. The default is 1 but is automatically disabled when ENABLE_SME_FOR_NS=1
since SME encompasses SVE.
since SME encompasses SVE. At this time, this build option cannot be used on
systems that have SPM_MM enabled.
- ``ENABLE_SVE_FOR_SWD``: Boolean option to enable SVE for the Secure world.
SVE is an optional architectural feature for AArch64. Note that this option

6
services/std_svc/spm_mm/spm_mm.mk
View File

@ -10,6 +10,12 @@ endif
ifneq (${ARCH},aarch64)
$(error "Error: SPM_MM is only supported on aarch64.")
endif
ifeq (${ENABLE_SVE_FOR_NS},1)
$(error "Error: SPM_MM is not compatible with ENABLE_SVE_FOR_NS")
endif
ifeq (${ENABLE_SME_FOR_NS},1)
$(error "Error: SPM_MM is not compatible with ENABLE_SME_FOR_NS")
endif
SPM_SOURCES := $(addprefix services/std_svc/spm_mm/, \
${ARCH}/spm_mm_helpers.S \