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author | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2017-10-24 10:07:35 +0100 |
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committer | Antonio Nino Diaz <antonio.ninodiaz@arm.com> | 2017-11-08 18:05:14 +0000 |
commit | 2fccb228045696b98f83b1d865bac3c65d96b980 (patch) | |
tree | 4c3a4b67406989e65611a103a7adaf233fed4f2e /Makefile | |
parent | ad02a7596f73ea9f07ebc9e04970ab7e9961c868 (diff) |
SPM: Introduce Secure Partition Manager
A Secure Partition is a software execution environment instantiated in
S-EL0 that can be used to implement simple management and security
services. Since S-EL0 is an unprivileged exception level, a Secure
Partition relies on privileged firmware e.g. ARM Trusted Firmware to be
granted access to system and processor resources. Essentially, it is a
software sandbox that runs under the control of privileged software in
the Secure World and accesses the following system resources:
- Memory and device regions in the system address map.
- PE system registers.
- A range of asynchronous exceptions e.g. interrupts.
- A range of synchronous exceptions e.g. SMC function identifiers.
A Secure Partition enables privileged firmware to implement only the
absolutely essential secure services in EL3 and instantiate the rest in
a partition. Since the partition executes in S-EL0, its implementation
cannot be overly complex.
The component in ARM Trusted Firmware responsible for managing a Secure
Partition is called the Secure Partition Manager (SPM). The SPM is
responsible for the following:
- Validating and allocating resources requested by a Secure Partition.
- Implementing a well defined interface that is used for initialising a
Secure Partition.
- Implementing a well defined interface that is used by the normal world
and other secure services for accessing the services exported by a
Secure Partition.
- Implementing a well defined interface that is used by a Secure
Partition to fulfil service requests.
- Instantiating the software execution environment required by a Secure
Partition to fulfil a service request.
Change-Id: I6f7862d6bba8732db5b73f54e789d717a35e802f
Co-authored-by: Douglas Raillard <douglas.raillard@arm.com>
Co-authored-by: Sandrine Bailleux <sandrine.bailleux@arm.com>
Co-authored-by: Achin Gupta <achin.gupta@arm.com>
Co-authored-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Diffstat (limited to 'Makefile')
-rw-r--r-- | Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -498,6 +498,7 @@ $(eval $(call add_define,PROGRAMMABLE_RESET_ADDRESS)) $(eval $(call add_define,PSCI_EXTENDED_STATE_ID)) $(eval $(call add_define,RESET_TO_BL31)) $(eval $(call add_define,SEPARATE_CODE_AND_RODATA)) +$(eval $(call add_define,ENABLE_SPM)) $(eval $(call add_define,SPD_${SPD})) $(eval $(call add_define,SPIN_ON_BL1_EXIT)) $(eval $(call add_define,TRUSTED_BOARD_BOOT)) |