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authorPatrick Georgi <patrick@coreboot.org>2023-12-13 17:57:34 +0100
committerPatrick Georgi <patrick@coreboot.org>2023-12-18 08:13:12 +0000
commited0647a850c973435b382250322d07749c5c4437 (patch)
treea91e8458c719a7b580bbcef5fc091502f714d66c /src/mainboard/razer
parent520ca9a51876177b3b99c01a4b2206cc3edbd3a4 (diff)
src/lib: Add memory/time saving special case for ramstage caching
When caching the ramstage for suspend/resume, we copy the entire image as it resides in RAM. The last part of that, CONFIG_HEAP_SIZE bytes, is the heap that will be reinitialized when the ramstage is started again. As such, copying doesn't make sense and complicates HEAP_SIZE configuration (because it needs to fit the space-constrained cache location) and costs time and space. Therefore, skip the heap. Side notes: - When building with ASAN, program.ld indicates that it will allocate some more space after the heap. This is not a problem, we just copy an ASAN-sized copy of the heap. - Heap use is managed in src/lib/malloc with statically allocated variables. Because ramstage is cached before it's executed, these values will be reset to their compile-time default values, too. Change-Id: I6553dc8b758196f2476af2e692c0421d0fa2b98e Signed-off-by: Patrick Georgi <patrick@coreboot.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/79525 Reviewed-by: Martin L Roth <gaumless@gmail.com> Reviewed-by: Paul Menzel <paulepanter@mailbox.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/mainboard/razer')
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