571e7f02de
Now that CBFS has this functionality built in, we no longer need to manually code it. payload_preload used to use the payload_preload_cache region to store the raw payload contents. This region was placed outside the firmware reserved region, so it was available for use by the OS. This was possible because the payload isn't loaded again on S3 resume. cbfs_preload only uses the cbfs_cache region. This region must be reserved because it gets used on the S3 resume path. Unfortunately this means that cbfs_cache must be increased to hold the payload. Cezanne is the only platform currently using payload_preload, and the size of cbfs_cache has already been adjusted. In the future we could look into adding an option to cbfs_preload that would allow it to use a different memory pool for the cache allocation. BUG=b:179699789 TEST=Boot guybrush and verify preloading the payload was successful CBFS DEBUG: get_preload_rdev(name='fallback/payload') preload successful Signed-off-by: Raul E Rangel <rrangel@chromium.org> Change-Id: Idc521b238620ff52b8ba481cd3c10e5c4f1394bd Reviewed-on: https://review.coreboot.org/c/coreboot/+/58962 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __SYMBOLS_H
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#define __SYMBOLS_H
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#include <types.h>
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extern u8 _dram[];
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#define REGION_SIZE(name) ((size_t)_##name##_size)
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#define DECLARE_REGION(name) \
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extern u8 _##name[]; \
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extern u8 _e##name[]; \
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extern u8 _##name##_size[];
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/*
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* Regions can be declared optional if not all configurations provide them in
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* memlayout and you want code to be able to check for their existence at
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* runtime. Not every region that is architecture or platform-specific should
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* use this -- only declare regions optional if the code *accessing* them runs
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* both on configurations that have the region and those that don't. That code
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* should then check (REGION_SIZE(name) != 0) before accessing it.
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*/
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#define DECLARE_OPTIONAL_REGION(name) \
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__weak extern u8 _##name[]; \
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__weak extern u8 _e##name[]; \
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__weak extern u8 _##name##_size[];
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DECLARE_REGION(sram)
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DECLARE_OPTIONAL_REGION(timestamp)
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DECLARE_REGION(preram_cbmem_console)
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DECLARE_REGION(cbmem_init_hooks)
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DECLARE_REGION(stack)
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DECLARE_OPTIONAL_REGION(preram_cbfs_cache)
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DECLARE_OPTIONAL_REGION(postram_cbfs_cache)
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DECLARE_OPTIONAL_REGION(cbfs_cache)
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DECLARE_REGION(cbfs_mcache)
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DECLARE_REGION(fmap_cache)
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DECLARE_REGION(tpm_tcpa_log)
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#if ENV_ROMSTAGE && CONFIG(ASAN_IN_ROMSTAGE)
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DECLARE_REGION(bss)
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DECLARE_REGION(asan_shadow)
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#endif
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#if ENV_RAMSTAGE && CONFIG(ASAN_IN_RAMSTAGE)
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DECLARE_REGION(data)
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DECLARE_REGION(heap)
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DECLARE_REGION(asan_shadow)
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#endif
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/* Regions for execution units. */
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DECLARE_REGION(payload)
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/* "program" always refers to the current execution unit. */
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DECLARE_REGION(program)
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/* _<stage>_size is always the maximum amount allocated in memlayout, whereas
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_program_size gives the actual memory footprint *used* by current stage. */
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DECLARE_REGION(decompressor)
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DECLARE_REGION(bootblock)
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DECLARE_REGION(verstage)
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DECLARE_REGION(romstage)
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DECLARE_REGION(postcar)
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DECLARE_REGION(ramstage)
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/* Arch-specific, move to <arch/symbols.h> if they become too many. */
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DECLARE_REGION(pagetables)
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DECLARE_REGION(ttb)
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DECLARE_OPTIONAL_REGION(ttb_subtables)
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DECLARE_REGION(dma_coherent)
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DECLARE_REGION(soc_registers)
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DECLARE_REGION(framebuffer)
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DECLARE_REGION(pdpt)
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DECLARE_OPTIONAL_REGION(opensbi)
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DECLARE_OPTIONAL_REGION(bl31)
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DECLARE_REGION(transfer_buffer)
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/* Returns true when pre-RAM symbols are known to the linker.
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* (Does not necessarily mean that the memory is accessible.) */
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static inline int preram_symbols_available(void)
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{
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return !ENV_X86 || ENV_ROMSTAGE_OR_BEFORE;
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}
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#endif /* __SYMBOLS_H */
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