Docs: Update configuration docs
Update configuration docs to align with changes which decouples option
configuration and validation in config header files.
Convert header file config system diagrams in svg format
It is difficult to modify existing figures in header_file_system.rst and
kconfig_header_file_system.rst.
Re-draw those figures in svg format and enable developers to more easily
update the diagram.
Change-Id: If88a6a07104ef54de127ccb9149c5ff4792b3cdd
Signed-off-by: David Hu <david.hu@arm.com>
diff --git a/docs/configuration/header_file_config_diagram.svg b/docs/configuration/header_file_config_diagram.svg
new file mode 100755
index 0000000..2ebc05c
--- /dev/null
+++ b/docs/configuration/header_file_config_diagram.svg
@@ -0,0 +1,4 @@
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pointer-events="all"/><path d="M 929.5 310 L 897 310 Q 891 310 893.15 304.4 L 911.85 255.6 Q 914 250 920 250 L 985 250 Q 991 250 988.85 255.6 L 970.15 304.4 Q 968 310 962 310 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-width="2" stroke-miterlimit="10" pointer-events="all"/><g fill="rgb(0, 0, 0)" font-family="Helvetica" text-anchor="middle" font-size="12px"><text x="940.5" y="277.5">TF-M</text><text x="940.5" y="291.5">Binaries</text></g><path d="M 777 280 L 896.13 280" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 901.38 280 L 894.38 283.5 L 896.13 280 L 894.38 276.5 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="101" y="91" width="60" height="26" fill="none" stroke="none" pointer-events="all"/><g fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px"><text x="102.5" y="108.5">Override</text></g><path d="M 231 126 C 233.76 126 236 128.24 236 131 L 236 169.75 Q 213.5 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font-size="12px"><text x="678.5" y="489.5">Override</text></g><rect x="374" y="137" width="110" height="26" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 144px; margin-left: 375px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: 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1px; padding-top: 38px; margin-left: 301px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: left;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(251, 251, 251); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">For example, TF-M Profile pre-defined CMake config files</span></div></div></div></foreignObject><text x="301" y="50" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px">For example, TF-M...</text></switch></g><rect x="382" y="506" width="110" height="53" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe flex-end; width: 108px; height: 1px; padding-top: 513px; margin-left: 382px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: right;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(251, 251, 251); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">For example, TF-M Profile pre-defined config header files</span></div></div></div></foreignObject><text x="490" y="525" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="end">For example, TF-M...</text></switch></g><rect x="231" y="91" width="60" height="26" fill="none" stroke="none" pointer-events="all"/><g fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px"><text x="232.5" y="108.5">Override</text></g><rect x="819" y="51" width="156" height="26" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe flex-start; width: 154px; height: 1px; padding-top: 58px; margin-left: 821px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: left;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(251, 251, 251); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">Header file config system</span></div></div></div></foreignObject><text x="821" y="70" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px">Header file config system</text></switch></g><path d="M 804 95.5 C 806.76 95.5 809 97.74 809 100.5 L 809 122.63 Q 801 115.65 793 122.63 Q 785 129.6 777 122.63 L 777 99.38 L 777 100.5 C 777 97.74 779.24 95.5 782 95.5 Z" fill="#f5f5f5" stroke="#666666" stroke-width="2" stroke-miterlimit="10" pointer-events="all"/><rect x="819" y="98" width="156" height="26" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe flex-start; width: 154px; height: 1px; padding-top: 105px; margin-left: 821px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: left;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: rgb(251, 251, 251); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial; float: none; display: inline !important;">Legacy CMake based config</span></div></div></div></foreignObject><text x="821" y="117" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px">Legacy CMake based config</text></switch></g><rect x="738" y="14" width="110" height="26" fill="none" stroke="none" pointer-events="all"/><g transform="translate(-0.5 -0.5)"><switch><foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;"><div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe flex-start; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 21px; margin-left: 739px;"><div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; font-weight: bold; white-space: normal; overflow-wrap: normal;"><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: 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\ No newline at end of file
diff --git a/docs/configuration/header_file_system.png b/docs/configuration/header_file_system.png
deleted file mode 100755
index 0c2151a..0000000
--- a/docs/configuration/header_file_system.png
+++ /dev/null
Binary files differ
diff --git a/docs/configuration/header_file_system.rst b/docs/configuration/header_file_system.rst
index ff69df3..06c9982 100644
--- a/docs/configuration/header_file_system.rst
+++ b/docs/configuration/header_file_system.rst
@@ -8,22 +8,34 @@
The following diagram shows how the system works.
-.. figure:: header_file_system.png
+.. figure:: header_file_config_diagram.svg
+ :align: center
-A ``config_tfm.h`` file collects customized configurations, including platform customized and
-project specific settings.
-Each component has a ``config_<comp_name>.h`` which includes the ``config_tfm.h`` first and then
-provides default values for each config option of the component as well as necessary validations
-on config dependencies.
-Source files then include component header files when necessary.
+Source files shall include ``config_tfm.h`` when necessary to fetch Component option settings.
+It is expected that all Component options are included in ``config_tfm.h`` to explicitly set values
+for each option.
+
+
+The ``config_tfm.h`` includes base configuration ``config_base.h``. Refer to
+:ref:`Base_configuration` for details of the base configurations.
The ``config_tfm.h`` includes a customized project config file provided via compile definition
-``PROJECT_CONFIG_HEADER_FILE``.
-Users set the corresponding CMake variable ``PROJECT_CONFIG_HEADER_FILE`` with the full path of the
-configuration header file.
+``PROJECT_CONFIG_HEADER_FILE``. Customized Component options in the project config file overrides
+those configured in ``config_base.h``.
+The project config header file can be
+
+- Generated by the TF-M Kconfig system <kconfig_system>
+- One of the header files of Profiles <tf-m_profiles>, set via the ``TFM_PROFILE`` build option.
+- Manually customized profile based on pre-set profiles.
+
+Users set CMake variable ``PROJECT_CONFIG_HEADER_FILE`` with the full path of the configuration
+header file.
+
A platform can adjust or place restriction on config options by providing a ``config_tfm_target.h``
under the root folder of their platforms.
If the build system finds the file, it sets the ``TARGET_CONFIG_HEADER_FILE`` compile definition.
+Platform specific option settings in ``TARGET_CONFIG_HEADER_FILE`` overrides those configured in
+``config_base.h``.
.. code-block:: c
@@ -35,15 +47,10 @@
#include TARGET_CONFIG_HEADER_FILE
#endif
-The project config header file can be
+ #include "config_base.h"
-- Generated by the TF-M Kconfig system <kconfig_system>
-- One of the header files of Profiles <tf-m_profiles>, set via the ``TFM_PROFILE`` build option.
-- Manually customized profile based on pre-set profiles.
-
-It is expected that all Component options are included in the header file to explicitly set values
-for each option.
-Refer to :ref:`Base_configuration` for details the base configurations.
+Each component can implement a ``config_<comp_name>_check.h`` to validate component specific config
+dependencies. ``config_<comp_name>_check.h`` shall include ``config_tfm.h``
--------------
diff --git a/docs/configuration/index.rst b/docs/configuration/index.rst
index 260134c..235d05d 100644
--- a/docs/configuration/index.rst
+++ b/docs/configuration/index.rst
@@ -46,7 +46,7 @@
****************
TF-M Project provides a base build, defined in ``/config/config_base.cmake``
-and ``/config/profile/config_profile_base.h``. It includes SPM and platform code only.
+and ``/config/config_base.h``.
Starting from the base, users can enable required services and features using several
independent methods to configure TF-M.
@@ -100,8 +100,8 @@
Base Configuration
******************
-The base configuraion is the ground for configuring TF-M providing default
-defined in ``/config/config_base.cmake`` and ``/config/profile/config_profile_base.h``.
+The base configuration is the ground for configuring TF-M providing default
+defined in ``/config/config_base.cmake`` and ``/config/config_base.h``.
The base build includes SPM and platform code only.
This table lists the config option categorizations of the SPM and Secure
diff --git a/docs/configuration/kconfig_header_file_system.png b/docs/configuration/kconfig_header_file_system.png
deleted file mode 100755
index 80d2ed2..0000000
--- a/docs/configuration/kconfig_header_file_system.png
+++ /dev/null
Binary files differ
diff --git a/docs/configuration/kconfig_header_file_system.svg b/docs/configuration/kconfig_header_file_system.svg
new file mode 100755
index 0000000..96ded0d
--- /dev/null
+++ b/docs/configuration/kconfig_header_file_system.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Do not edit this file with editors other than diagrams.net -->
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diff --git a/docs/configuration/kconfig_system.rst b/docs/configuration/kconfig_system.rst
index a4b2caf..015d258 100644
--- a/docs/configuration/kconfig_system.rst
+++ b/docs/configuration/kconfig_system.rst
@@ -6,7 +6,7 @@
The Kconfig system is an alternative tool to the CMake config system for users to change config
options of TF-M.
-.. figure:: kconfig_header_file_system.png
+.. figure:: kconfig_header_file_system.svg
It handles dependencies and validations automatically when you change configurations so that the
generated configuration options are always valid.
