| /* |
| * 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. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc. |
| */ |
| |
| /* 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 and smm only has a heap. */ |
| #ifndef ARCH_STAGE_HAS_HEAP_SECTION |
| #define ARCH_STAGE_HAS_HEAP_SECTION (ENV_RAMSTAGE || ENV_SMM) |
| #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) |
| |
| /* 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) |
| |
| /* TODO: This only works if you never access CBFS in romstage before RAM is up! |
| * If you need to change that assumption, you have some work ahead of you... */ |
| #if defined(__PRE_RAM__) && !ENV_ROMSTAGE |
| #define PRERAM_CBFS_CACHE(addr, size) CBFS_CACHE(addr, size) |
| #define POSTRAM_CBFS_CACHE(addr, size) \ |
| REGION(unused_cbfs_cache, addr, size, 4) |
| #else |
| #define PRERAM_CBFS_CACHE(addr, size) \ |
| REGION(unused_cbfs_cache, addr, size, 4) |
| #define POSTRAM_CBFS_CACHE(addr, size) CBFS_CACHE(addr, size) |
| #endif |
| |
| /* Careful: 'INCLUDE <filename>' must always be at the end of the output line */ |
| #ifdef __BOOTBLOCK__ |
| #define BOOTBLOCK(addr, sz) \ |
| SET_COUNTER(bootblock, addr) \ |
| _ = ASSERT(_ebootblock - _bootblock <= sz, \ |
| STR(Bootblock exceeded its allotted size! (sz))); \ |
| INCLUDE "lib/bootblock.bootblock.ld" |
| #else |
| #define BOOTBLOCK(addr, sz) \ |
| SET_COUNTER(bootblock, addr) \ |
| . += sz; |
| #endif |
| |
| #ifdef __ROMSTAGE__ |
| #define ROMSTAGE(addr, sz) \ |
| SET_COUNTER(romstage, addr) \ |
| _ = ASSERT(_eromstage - _romstage <= sz, \ |
| STR(Romstage exceeded its allotted size! (sz))); \ |
| INCLUDE "lib/romstage.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 |
| |
| #endif /* __MEMLAYOUT_H */ |