tree 8e47b61d7912fa1720171572a337edf701726a83
parent 55f6ea4dadb20c52cf837fba2cc344547ac8baca
author Prasad Kummari <prasad.kummari@amd.com> 1744273389 +0530
committer Prasad Kummari <prasad.kummari@amd.com> 1746624385 +0530

feat(versal): add hooks for mmap and early setup

Add early setup hooks through custom_early_setup() and provide a
mechanism to support custom memory mapping, including the extension
of the memory map via custom_mmap_add(). This change may also
require alignment of the MAX_XLAT_TABLE and MAX_XLAT_TABLES macros.
These can be defined within the custom_pkg.mk makefile as follows:

MAX_MMAP_REGIONS := XY
$(eval $(call add_define,MAX_MMAP_REGIONS))
MAX_XLAT_TABLES  := XZ
$(eval $(call add_define,MAX_XLAT_TABLES))

If PLATFORM_STACK_SIZE is not already defined, a default value
should be used. This allows for configurability of the stack size
across different interfaces, such as custom packages. The
custom_early_setup() function enables early low-level operations
to bring the system into a correct state. Support for a custom
SiP service is also added. A basic implementation of
custom_smc_handler() is provided by the platform, while the actual
definition is expected to be supplied by the custom package. This
feature is designed for use by external libraries, such as those
that require status checking. This code introduces a generic
framework for integrating custom logic via the
$(CUSTOM_PKG_PATH)/custom_pkg.mk makefile, including
optional support for custom SMC functionality, which is determined
by the custom package.

Change-Id: If9107b32c8c1ca4026d0a2980901e841fc6e03f7
Signed-off-by: Prasad Kummari <prasad.kummari@amd.com>