refactor(neoverse-rd): unify GIC SPI range macros

The existing macros representing GIC SPI minimum and maximum for
multichip platforms lack a consistent naming convention. To address
this, establish

refactor(neoverse-rd): unify GIC SPI range macros

The existing macros representing GIC SPI minimum and maximum for
multichip platforms lack a consistent naming convention. To address
this, establish the convention "NRD_CHIP<x>_SPI_MIN" and
"NRD_CHIP<x>_SPI_MAX" for use across all Neoverse Reference Design
multichip platforms.

Furthermore, extend this naming convention to RD-N2-Cfg2 and introduce
similar macros.

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: Idca2a8c66579f05e712e3b6e95204fedc122cf23

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refactor(neoverse-rd): move defines out of platform_def.h

Presently, the second generation platforms have direct references to CSS
and ROS specific addresses within RD-N2's platform header file
(pla

refactor(neoverse-rd): move defines out of platform_def.h

Presently, the second generation platforms have direct references to CSS
and ROS specific addresses within RD-N2's platform header file
(platform_def.h). Moreover, there are platform port specific macros
defined within platform_def.h To enhance organization and
appropriateness, relocate these definitions to nrd_css_def2.h,
nrd_ros_def2.h and nrd_arm_platform_def1.h files accordingly. Reuse
these definitions within the platform_def.h files as needed.

Additionally, remove reference to the unused PLAT_ARM_GICC_BASE macro
from the individual platform_def.h file.

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I9a237c3ae28d7e209188e2c37c8494b4a420ee83

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refactor(neoverse-rd): add defines for ROM, SRAM and DRAM2

In the current setup, the base and size of the ROM, SRAM, and DRAM2
regions are directly defined in the nrd_fw_def2.h file for N2 CPU based

refactor(neoverse-rd): add defines for ROM, SRAM and DRAM2

In the current setup, the base and size of the ROM, SRAM, and DRAM2
regions are directly defined in the nrd_fw_def2.h file for N2 CPU based
platforms. To enhance modularity and appropriateness, introduce macros
for these definitions in the respective css file (nrd_css_def2.h). While
the maximum sizes for ROM, SRAM, and DRAM2 are specified in the css
specification, the actual implementation sizes may vary. Consequently,
relocate the size macros to the platform-specific platform_def.h file
for individual platforms.

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I30988bf63cf942f68188a70697cc43cb6af96a9c

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refactor(neoverse-rd): refactor nrd_soc_platform_def_v2.h file

Continuing the refactoring of the various definitions for the second
generation platforms based on the N2/V2 CPU, refactor the definiti

refactor(neoverse-rd): refactor nrd_soc_platform_def_v2.h file

Continuing the refactoring of the various definitions for the second
generation platforms based on the N2/V2 CPU, refactor the definitions in
the nrd_soc_platform_def_v2.h file into the following files as
appropriate.

- nrd_ros_def2.h: includes RoS hardware related definitions
- nrd_ros_fw_def2.h: includes RoS firmware related definitions
- nrd_plat_arm_def2.h: includes platform port related definitions

RoS (Rest Of System) is used to refer to the part of the reference
design platform that excludes CSS. The file inclusions in the
platform_def.h file of the platforms have been updated accordingly.

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I393e6f4a84be45f1781ea281bd55fa813803f6db

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refactor(neoverse-rd): refactor nrd_base_platform_def.h

The nrd_base_platform_def.h file includes CSS, RoS, firmware and
platform port related definitions. This approach of consolidating the
various

refactor(neoverse-rd): refactor nrd_base_platform_def.h

The nrd_base_platform_def.h file includes CSS, RoS, firmware and
platform port related definitions. This approach of consolidating the
various definitions for multiple generation of platforms into the
nrd_base_platform_def.h file is not scaling well.

So in preparation of moving away from the use of nrd_base_platform_def.h
file for the second generation platforms based on N2/V2 CPUs, split the
definitions in this file into multiple include files. The new files into
which the definitions are refactored are -

- nrd_css_def2.h: includes CSS hardware related definitions
- nrd_css_fw_def2.h: includes CSS firmware related definitions
- nrd_ros_fw_def2.h: includes RoS firmware related definitions
- nrd_plat_arm_def2.h: includes platform port elated definitions

RoS (Rest Of System) is used to refer to the part of the reference
design platform that excludes CSS. The definitions that are only
relavant to the aforementioned platforms have been refactored from the
nrd_base_platform_def.h file.

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Change-Id: I45f680857328fa77f0977897490b225bdb29efe4

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refactor(sgi): rename "CSS_SGI"" macro prefixes to "NRD"

As of now, several internal macros utilize "CSS_SGI" as their prefix.
Given the change to neoverse_rd, and the subsequent migration out of th

refactor(sgi): rename "CSS_SGI"" macro prefixes to "NRD"

As of now, several internal macros utilize "CSS_SGI" as their prefix.
Given the change to neoverse_rd, and the subsequent migration out of the
css directory, the prefix "CSS_SGI" is no longer appropriate.
Therefore, update the macro prefixes to "NRD" for consistency and
clarity.

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I3d1a9dba3e83f6e107379fc5bcf8256cc93d8c3d

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refactor(sgi): move apis and types to "nrd" prefix

Currently, functions and types internal to "neoverse_rd" platforms are
named with "sgi" as the prefix. Since common code and platforms are no
longe

refactor(sgi): move apis and types to "nrd" prefix

Currently, functions and types internal to "neoverse_rd" platforms are
named with "sgi" as the prefix. Since common code and platforms are no
longer under the "sgi" umbrella, move the prefix to "nrd". This change
would amend the prefixes for functions, types and objects.

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I706a82bddf55c3be7cf9cef9aaa5df6d420098ca

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refactor(sgi): replace build-option prefix to "NRD"

As of now, CSS_SGI_PLATFORM_VARIANT and CSS_SGI_CHIP_COUNT are the
external build option that "sgi" platforms support. As "sgi" has been
renamed t

refactor(sgi): replace build-option prefix to "NRD"

As of now, CSS_SGI_PLATFORM_VARIANT and CSS_SGI_CHIP_COUNT are the
external build option that "sgi" platforms support. As "sgi" has been
renamed to "neoverse_rd" and the source files have been migrated out of
the css directory, replace the prefix "CSS_SGI" with "NRD".

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: I27989ff42404d823dd2a8cd22ff485497ccb62d4

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refactor(sgi): move neoverse_rd out of css

Currently, neoverse_rd is hosted under the "css" directory. However,
"css" directory is more relevant for hosting css definitions and
corresponding sources

refactor(sgi): move neoverse_rd out of css

Currently, neoverse_rd is hosted under the "css" directory. However,
"css" directory is more relevant for hosting css definitions and
corresponding sources. Since neoverse_rd hosts source and header for css
and soc, move neoverse_rd from css to board folder. Consolidate common
sources and headers under neoverse_rd/common. Additionally, group RD-V1,
RD-V1-MC, RD-N2, RD-N1-Edgex2 and SGI-575 within neoverse_rd/platform.
With the changes in this commit, the tree view would look as follows:

plat/arm/board/neoverse_rd/
├── common
│   ├── arch
│   ├── include
│   └── ras
└── platform
├── rdn1edge
├── rdn2
├── rdv1
├── rdv1mc
└── sgi575

Signed-off-by: Rohit Mathew <Rohit.Mathew@arm.com>
Change-Id: Iaccc86bc9d415f5c045c834902241fcf3c00277b

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