/* * 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. */ /* This file contains macro definitions for memlayout.ld linker scripts. */ #ifndef __MEMLAYOUT_H #define __MEMLAYOUT_H #include <rules.h> #include <arch/memlayout.h> /* Macros that the architecture can override. */ #ifndef ARCH_POINTER_ALIGN_SIZE #define ARCH_POINTER_ALIGN_SIZE 8 #endif #ifndef ARCH_CACHELINE_ALIGN_SIZE #define ARCH_CACHELINE_ALIGN_SIZE 64 #endif /* Default to data as well as bss. */ #ifndef ARCH_STAGE_HAS_DATA_SECTION #define ARCH_STAGE_HAS_DATA_SECTION 1 #endif #ifndef ARCH_STAGE_HAS_BSS_SECTION #define ARCH_STAGE_HAS_BSS_SECTION 1 #endif /* Default is that currently ramstage, smm, and rmodules have a heap. */ #ifndef ARCH_STAGE_HAS_HEAP_SECTION #define ARCH_STAGE_HAS_HEAP_SECTION (ENV_RAMSTAGE || ENV_SMM || ENV_RMODULE) #endif #define STR(x) #x #define ALIGN_COUNTER(align) \ . = ALIGN(align); #define SET_COUNTER(name, addr) \ _ = ASSERT(. <= addr, STR(name overlaps the previous region!)); \ . = addr; #define SYMBOL(name, addr) \ SET_COUNTER(name, addr) \ _##name = .; #define REGION(name, addr, size, expected_align) \ SYMBOL(name, addr) \ _ = ASSERT(. == ALIGN(expected_align), \ STR(name must be aligned to expected_align!)); \ SYMBOL(e##name, addr + size) #define ALIAS_REGION(name, alias) \ _##alias = _##name; \ _e##alias = _e##name; /* Declare according to SRAM/DRAM ranges in SoC hardware-defined address map. */ #define SRAM_START(addr) SYMBOL(sram, addr) #define SRAM_END(addr) SYMBOL(esram, addr) #define DRAM_START(addr) SYMBOL(dram, addr) #define TIMESTAMP(addr, size) \ REGION(timestamp, addr, size, 8) \ _ = ASSERT(size >= 212, "Timestamp region must fit timestamp_cache!"); #define PRERAM_CBMEM_CONSOLE(addr, size) \ REGION(preram_cbmem_console, addr, size, 4) /* Use either CBFS_CACHE (unified) or both (PRERAM|POSTRAM)_CBFS_CACHE */ #define CBFS_CACHE(addr, size) \ REGION(cbfs_cache, addr, size, 4) \ ALIAS_REGION(cbfs_cache, preram_cbfs_cache) \ ALIAS_REGION(cbfs_cache, postram_cbfs_cache) #if defined(__PRE_RAM__) #define PRERAM_CBFS_CACHE(addr, size) \ REGION(preram_cbfs_cache, addr, size, 4) \ ALIAS_REGION(preram_cbfs_cache, cbfs_cache) #define POSTRAM_CBFS_CACHE(addr, size) \ REGION(postram_cbfs_cache, addr, size, 4) #else #define PRERAM_CBFS_CACHE(addr, size) \ REGION(preram_cbfs_cache, addr, size, 4) #define POSTRAM_CBFS_CACHE(addr, size) \ REGION(postram_cbfs_cache, addr, size, 4) \ ALIAS_REGION(postram_cbfs_cache, cbfs_cache) #endif /* Careful: 'INCLUDE <filename>' must always be at the end of the output line */ #if ENV_BOOTBLOCK #define BOOTBLOCK(addr, sz) \ SYMBOL(bootblock, addr) \ _ebootblock = _bootblock + sz; \ _ = ASSERT(_eprogram - _program <= sz, \ STR(Bootblock exceeded its allotted size! (sz))); \ INCLUDE "bootblock/lib/program.ld" #else #define BOOTBLOCK(addr, sz) \ REGION(bootblock, addr, sz, 1) #endif #if ENV_ROMSTAGE #define ROMSTAGE(addr, sz) \ SYMBOL(romstage, addr) \ _eromstage = _romstage + sz; \ _ = ASSERT(_eprogram - _program <= sz, \ STR(Romstage exceeded its allotted size! (sz))); \ INCLUDE "romstage/lib/program.ld" #else #define ROMSTAGE(addr, sz) \ REGION(romstage, addr, sz, 1) #endif #if ENV_RAMSTAGE #define RAMSTAGE(addr, sz) \ SYMBOL(ramstage, addr) \ _eramstage = _ramstage + sz; \ _ = ASSERT(_eprogram - _program <= sz, \ STR(Ramstage exceeded its allotted size! (sz))); \ INCLUDE "ramstage/lib/program.ld" #else #define RAMSTAGE(addr, sz) \ REGION(ramstage, addr, sz, 1) #endif /* Careful: required work buffer size depends on RW properties such as key size * and algorithm -- what works for you might stop working after an update. Do * NOT lower the asserted minimum without consulting vboot devs (rspangler)! */ #define VBOOT2_WORK(addr, size) \ REGION(vboot2_work, addr, size, 16) \ _ = ASSERT(size >= 12K, "vboot2 work buffer must be at least 12K!"); #if ENV_VERSTAGE #define VERSTAGE(addr, sz) \ SYMBOL(verstage, addr) \ _everstage = _verstage + sz; \ _ = ASSERT(_eprogram - _program <= sz, \ STR(Verstage exceeded its allotted size! (sz))); \ INCLUDE "verstage/lib/program.ld" #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) \ _ = ASSERT(IS_ENABLED(CONFIG_VBOOT_RETURN_FROM_VERSTAGE) == 1, \ "Must set RETURN_FROM_VERSTAGE to overlap romstage."); \ VERSTAGE(addr, size) #else #define VERSTAGE(addr, sz) \ REGION(verstage, addr, sz, 1) #define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size) #endif #if ENV_POSTCAR #define POSTCAR(addr, sz) \ SYMBOL(postcar, addr) \ _epostcar = _postcar + sz; \ _ = ASSERT(_eprogram - _program <= sz, \ STR(Aftercar exceeded its allotted size! (sz))); \ INCLUDE "postcar/lib/program.ld" #else #define POSTCAR(addr, sz) \ REGION(postcar, addr, sz, 1) #endif #define WATCHDOG_TOMBSTONE(addr, size) \ REGION(watchdog_tombstone, addr, size, 4) \ _ = ASSERT(size == 4, "watchdog tombstones should be exactly 4 byte!"); #endif /* __MEMLAYOUT_H */