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Change-Id: I011256ca60672a00b711c3f5725211be64bbc2b2
Signed-off-by: Louis Mayencourt <louis.mayencourt@arm.com>

Include multi-chip-mode parameter in HW_CONFIG dts to let next stage of
boot firmware know about the multi-chip operation mode.

Change-Id: Ic7535c2280fd57180ad14aa0ae277cf0c4d1337b
Signed-off-by: Vijayenthiran Subramaniam <vijayenthiran.subramaniam@arm.com>

With the two new APIs 'plat_arm_sgi_get_platform_id' and
'plat_arm_sgi_get_config_id' that are available now, BL31 need not
depend on hw_config device tree to identify the platform. In addition
to this, the existing hardware description in hw_config can be limited
to use by BL33 and not by the operating system.

So the hardware description from hw_config dts can be moved into
nt_fw_config dts and the use of hw_config dts can be removed.

Change-Id: I873b7e1e72823d3ec5d253a848e85ae724f09e49
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>

Dynamically populating the 'system-id' node in the HW_CONFIG dts makes
it difficult to enforce memory overlap checks. So add the system-id node
in the HW_CONFIG dts file as a place holder with 'platform-id' and
'config-id' set to zero.

The code at BL2 stage determines the values of 'platform-id' and
'config-id' at runtime and updates the corresponding fields in the
system-id node of HW_CONFIG dts.

Change-Id: I2ca9980b994ac418da8afa0c72716ede10aff68a
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>

To align the placement of ftds files with that of other Arm platforms,
move the ftds files from plat/arm/css/sgi/ to plat/arm/board/sgi575.

Change-Id: Id7c772eb5cf3d308d4e02a3c8099218e889a0e96
Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com>