fix(gpt): remove unused `gpt_disable` function

After GPT protections are enabled, there are no scenarios where they
need to be disabled, similarly to how TZC-400 protections are not
disabled after b

fix(gpt): remove unused `gpt_disable` function

After GPT protections are enabled, there are no scenarios where they
need to be disabled, similarly to how TZC-400 protections are not
disabled after being setup.

Change-Id: I7eae3147130c7a6c3b7b3e9c10e8e7229f32505d
Signed-off-by: Ludovic Mermod <ludovic.mermod@arm.com>

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feat(cpufeat): introduce FEAT_RME_GDI support

This patch adds a new build flag ENABLE_FEAT_RME_GDI to enable this
feature, along with defining various related register fields. At this
point, when en

feat(cpufeat): introduce FEAT_RME_GDI support

This patch adds a new build flag ENABLE_FEAT_RME_GDI to enable this
feature, along with defining various related register fields. At this
point, when enabled, this feature enables the SA and NSP GPI encodings
by setting the corresponding bits in GPCCR_EL3.

Change-Id: I54152fbb3d19b176264e5d16acbcc866725dc290
Signed-off-by: John Powell <john.powell@arm.com>
Signed-off-by: Timothy Hayes <timothy.hayes@arm.com>

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feat(cpufeat): add support for FEAT_RME_GPC2

This change adds support for FEAT_RME_GPC2 and Non-Secure-Only (NSO)
Physical Address Space.

Previously, all non-secure (NS) memory was accessible to th

feat(cpufeat): add support for FEAT_RME_GPC2

This change adds support for FEAT_RME_GPC2 and Non-Secure-Only (NSO)
Physical Address Space.

Previously, all non-secure (NS) memory was accessible to the secure
world and realm world. With GPC2 and the NSO bit in the GPT, memory
can now be restricted to the non-secure world only. This is enabled
automatically on supported systems when ENABLE_RME is true.

Change-Id: I9b70c3a23c5ec7d83bd787d0fb3edd55934f1d05
Signed-off-by: John Powell <john.powell@arm.com>
Signed-off-by: Girish Pathak <girish.pathak@arm.com>

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feat(gpt): statically allocate bitlocks array

Statically allocate 'gpt_bitlock' array of fine-grained
'bitlock_t' data structures in arm_bl31_setup.c.
The amount of memory needed for this array is c

feat(gpt): statically allocate bitlocks array

Statically allocate 'gpt_bitlock' array of fine-grained
'bitlock_t' data structures in arm_bl31_setup.c.
The amount of memory needed for this array is controlled
by 'RME_GPT_BITLOCK_BLOCK' build option and 'PLAT_ARM_PPS'
macro defined in platform_def.h which specifies the size
of protected physical address space in bytes.
'PLAT_ARM_PPS' takes values from 4GB to 4PB supported by
Arm architecture.

Change-Id: Icf620b5039e45df6828d58fca089cad83b0bc669
Signed-off-by: AlexeiFedorov <Alexei.Fedorov@arm.com>

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