bl31: Split into two separate memory regions
Some platforms are extremely memory constrained and must split BL31 between multiple non-contiguous areas in SRAM. Allow the NOBITS sections (.bss, stacks, page tables, and coherent memory) to be placed in a separate region of RAM from the loaded firmware image. Because the NOBITS region may be at a lower address than the rest of BL31, __RW_{START,END}__ and __BL31_{START,END}__ cannot include this region, or el3_entrypoint_common would attempt to invalidate the dcache for the entire address space. New symbols __NOBITS_{START,END}__ are added when SEPARATE_NOBITS_REGION is enabled, and the dcached for the NOBITS region is invalidated separately. Signed-off-by: Samuel Holland <samuel@sholland.org> Change-Id: Idedfec5e4dbee77e94f2fdd356e6ae6f4dc79d37 |
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Makefile |
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bl31/bl31.ld.S |
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docs/design/firmware-design.rst |
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docs/getting_started/build-options.rst |
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include/arch/aarch64/el3_common_macros.S |
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make_helpers/defaults.mk |
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