9b1f3cc6fb
This patch pulls control of the memory pool serving allocations from the CBFS_CACHE memlayout area into cbfs.c and makes it a core part of the CBFS API. Previously, platforms would independently instantiate this as part of boot_device_ro() (mostly through cbfs_spi.c). The new cbfs_cache pool is exported as a global so these platforms can still use it to directly back rdev_mmap() on their boot device, but the cbfs_cache can now also use it to directly make allocations itself. This is used to allow transparent decompression support in cbfs_map(). Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I0d52b6a8f582a81a19fd0fd663bb89eab55a49d9 Reviewed-on: https://review.coreboot.org/c/coreboot/+/49333 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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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