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feat(drtm): add platform API to retrieve ACPI tables region size

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Introduces a platform-specific API to retrieve the ACPI table
region size. This will be used in a subsequent patch to specify
the minimum DLME size requirement for the DCE preamble.

Change-Id: I44ce9241733b22fea3cbce9d42f1c2cc5ef20852
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
This commit is contained in:
Manish V Badarkhe 2025-02-24 21:16:47 +00:00
parent bac623d186
commit 7792bdbdf9
2 changed files with 16 additions and 4 deletions
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16
docs/porting-guide.rst
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@ -1001,7 +1001,7 @@ Function : plat_drtm_get_min_size_normal_world_dce()
This function returns the size normal-world DCE of the platform.
Function : plat_drtm_get_imp_def_dlme_region_size()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::
@ -1012,7 +1012,7 @@ This function returns the size of implementation defined DLME region
of the platform.
Function : plat_drtm_get_tcb_hash_table_size()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::
@ -1021,8 +1021,18 @@ Function : plat_drtm_get_tcb_hash_table_size()
This function returns the size of TCB hash table of the platform.
Function : plat_drtm_get_acpi_tables_region_size()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::
Argument : void
Return : uint64_t
This function returns the size of ACPI tables region of the platform.
Function : plat_drtm_get_tcb_hash_features()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
::

4
include/plat/common/plat_drtm.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2022-2024, Arm Limited. All rights reserved.
* Copyright (c) 2022-2025, Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
@ -59,6 +59,8 @@ uint64_t plat_drtm_get_min_size_normal_world_dce(void);
uint64_t plat_drtm_get_tcb_hash_table_size(void);
uint64_t plat_drtm_get_imp_def_dlme_region_size(void);
uint64_t plat_drtm_get_tcb_hash_features(void);
uint64_t plat_drtm_get_acpi_tables_region_size(void);
/* DRTM error handling functions */
int plat_set_drtm_error(uint64_t error_code);