/* * This file is part of the coreboot project. * * Copyright 2014 Google Inc. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; version 2 of the License. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. */ #ifndef __SYMBOLS_H #define __SYMBOLS_H #include <types.h> extern u8 _sram[]; extern u8 _esram[]; #define _sram_size (_esram - _sram) extern u8 _dram[]; extern u8 _timestamp[]; extern u8 _etimestamp[]; #define _timestamp_size (_etimestamp - _timestamp) extern u8 _preram_cbmem_console[]; extern u8 _epreram_cbmem_console[]; #define _preram_cbmem_console_size \ (_epreram_cbmem_console - _preram_cbmem_console) extern u8 _cbmem_init_hooks[]; extern u8 _ecbmem_init_hooks[]; #define _cbmem_init_hooks_size (_ecbmem_init_hooks - _cbmem_init_hooks) extern u8 _stack[]; extern u8 _estack[]; #define _stack_size (_estack - _stack) extern u8 _pagetables[]; extern u8 _epagetables[]; #define _pagetables_size (_epagetables - _pagetables) extern u8 _preram_cbfs_cache[]; extern u8 _epreram_cbfs_cache[]; #define _preram_cbfs_cache_size (_epreram_cbfs_cache - _preram_cbfs_cache) extern u8 _postram_cbfs_cache[]; extern u8 _epostram_cbfs_cache[]; #define _postram_cbfs_cache_size (_epostram_cbfs_cache - _postram_cbfs_cache) extern u8 _cbfs_cache[]; extern u8 _ecbfs_cache[]; #define _cbfs_cache_size (_ecbfs_cache - _cbfs_cache) extern u8 _payload[]; extern u8 _epayload[]; #define _payload_size (_epayload - _payload) /* "program" always refers to the current execution unit. */ extern u8 _program[]; extern u8 _eprogram[]; #define _program_size (_eprogram - _program) /* _<stage>_size is always the maximum amount allocated in memlayout, whereas * _program_size gives the actual memory footprint *used* by current stage. */ extern u8 _decompressor[]; extern u8 _edecompressor[]; #define _decompressor_size (_edecompressor - _decompressor) extern u8 _bootblock[]; extern u8 _ebootblock[]; #define _bootblock_size (_ebootblock - _bootblock) extern u8 _romstage[]; extern u8 _eromstage[]; #define _romstage_size (_eromstage - _romstage) extern u8 _ramstage[]; extern u8 _eramstage[]; #define _ramstage_size (_eramstage - _ramstage) extern u8 _verstage[]; extern u8 _everstage[]; #define _verstage_size (_everstage - _verstage) /* Arch-specific, move to <arch/symbols.h> if they become too many. */ extern u8 _ttb[]; extern u8 _ettb[]; #define _ttb_size (_ettb - _ttb) extern u8 _ttb_subtables[]; extern u8 _ettb_subtables[]; #define _ttb_subtables_size (_ettb_subtables - _ttb_subtables) extern u8 _dma_coherent[]; extern u8 _edma_coherent[]; #define _dma_coherent_size (_edma_coherent - _dma_coherent) extern u8 _soc_registers[]; extern u8 _esoc_registers[]; #define _soc_registers_size (_esoc_registers - _soc_registers) extern u8 _framebuffer[]; extern u8 _eframebuffer[]; #define _framebuffer_size (_eframebuffer - _framebuffer) extern u8 _pdpt[]; extern u8 _epdpt[]; #define _pdpt_size (_epdpt - _pdpt) extern u8 _bl31[]; extern u8 _ebl31[]; #define _bl31_size (_ebl31 - _bl31) /* Put this into a .c file accessing a linker script region to mark that region * as "optional". If it is defined in memlayout.ld (or anywhere else), the * values from that definition will be used. If not, start, end and size will * all evaluate to 0. (We can't explicitly assign the symbols to 0 in the * assembly due to https://sourceware.org/bugzilla/show_bug.cgi?id=1038.) */ #define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name) #endif /* __SYMBOLS_H */