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1st part of llext #8180 #8759

Merged
merged 8 commits into from
Jan 26, 2024
Merged

1st part of llext #8180 #8759

merged 8 commits into from
Jan 26, 2024

Commits on Jan 25, 2024

  1. llext: add a new module type 

    We need to be able to distinguish LLEXT loadable dynamically linkable
modules at run-time. Add a new type for them. Compatibility is
preserved.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  2. lib-manager: fork a copy for LLEXT support 

    This forks a slightly earlier version of library loading code for
upcoming LLEXT support.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  3. llext-manager: handle unaligned .text and .data sections 

    Currently only page size-aligned .text and .rodata sections are
supported. Remove this limitation by prepadding the address to
restore the alignment.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  4. llext-manager: remove instance-count handling 

    .bss splitting is specific to system-service module loading, LLEXT
uses a traditional shared .bss ELF section.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  5. llext-manager: store segment sizes locally 

    Currently segment sizes are calculated from page counts, stored in
module manifests. This restricts us to only using page size-aligned
segment sizes. In case of not page size-aligned ELF sections this can
lead to wasted memory. To avoid this store segment sizes in full-size
per-module variables to access them at any time.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
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  6. module: fix cache synchronisation 

    Buffers, where modules are stored originally, don't need their caches
to be synchronised - they're only used as a data storage and only
accessed via cached aliases. But when final buffers are allocated,
from which modules are actually run, those buffers do indeed need
cache synchronisation.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  7. rimage: mtl: extract platform part from mtl.toml.h 

    A part of mtl.toml.h is also needed for loadable modules, built for
MTL. Extract it into a separate file.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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  8. rimage: add a generic platform.toml 

    Instead of including TOML files for each platform explicitly, add a
generic platform.toml, that will contain all respective platform
TOML files, and select the correct one, based on build configucation.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
    @lyakh
    lyakh committed Jan 25, 2024
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