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/*
* 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)
#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) \
SET_COUNTER(bootblock, addr) \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Bootblock exceeded its allotted size! (sz))); \
INCLUDE "lib/program.bootblock.ld"
#else
#define BOOTBLOCK(addr, sz) \
SET_COUNTER(bootblock, addr) \
. += sz;
#endif
#if ENV_ROMSTAGE
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Romstage exceeded its allotted size! (sz))); \
INCLUDE "lib/program.romstage.ld"
#else
#define ROMSTAGE(addr, sz) \
SET_COUNTER(romstage, addr) \
. += sz;
#endif
#if ENV_RAMSTAGE
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Ramstage exceeded its allotted size! (sz))); \
INCLUDE "lib/program.ramstage.ld"
#else
#define RAMSTAGE(addr, sz) \
SET_COUNTER(ramstage, addr) \
. += sz;
#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) \
SET_COUNTER(verstage, addr) \
_ = ASSERT(_eprogram - _program <= sz, \
STR(Verstage exceeded its allotted size! (sz))); \
INCLUDE "lib/program.verstage.ld"
#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) VERSTAGE(addr, size)
#else
#define VERSTAGE(addr, sz) \
SET_COUNTER(verstage, addr) \
. += sz;
#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size)
#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 */
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