| /* |
| * 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) |
| |
| /* 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 */ |
| #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 */ |