[vhdirk]

We've been using wolfboot for quite some time. From what I can tell, way before WOLFBOOT_SELF_HEADER was introduced.
To query the bootloader version, we keep the version in a named linker section.
At some point we would like to migrate to using the self header, but we'll always need to support older bootloaders that do not have a self header as well.

Together with #958, this commit enables us to provide the section name externally, limiting the number of patches we have to carry forward

[Copilot]

🟡 Changes recommended

Critical issues prevent custom version-section settings from reaching the compiler correctly and leave the section attribute undefined in update_flash.c, breaking standalone RAM_CODE builds.

2 open issues

• Forward the configured version section as VERSION_SECTION · New
• Define the version section attribute in the shared header · New

What changed in this PR

This PR introduces configurable linker-section placement for the wolfBoot version number, supporting version queries on bootloaders without a self header. It complements #958’s custom linker-script support.

Changes:

• Adds a configurable section attribute to the version declarations.
• Introduces shared stringification helpers.
• Adds build-flag handling for the section-name setting.

File	Description
src/​update_flash.c	Applies the section macro to the version declaration.
src/​loader.c	Defines the section attribute and applies it to the version declaration.
include/​wolfboot/​wolfboot.h	Adds two-level stringification helpers.
arch.mk	Adds compiler-flag handling for the version-section option.

_{Review effort: Balanced}

[dgarske]

Okay to test. Company contributor agreement on file.

[dgarske]

Over to @danielinux

[Copilot]

🟡 Changes recommended

WOLFBOOT_VERSION_SECTION is missing from CONFIG_VARS in tools/config.mk, so make config silently removes the setting and subsequent builds lose the named version section required by external readers.

1 open issue

• Preserve WOLFBOOT_VERSION_SECTION when regenerating .config · New

2 resolved since last review

• Define the version section attribute in the shared header
• Forward the configured version section as VERSION_SECTION

_{Review effort: Balanced}

[dgarske]

One more copilot finding #966 (review)

[danielinux]

IAR compatibility: please guard your gcc dialect attribute as follow:

#if defined(__IAR_SYSTEMS_ICC__)
#define WB_SECTION(name) __section(name)
#else
#define WB_SECTION(name) __attribute__((section(name)))
#endif

Also please rebase on latest master, resolve conflicts