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Diffstat (limited to 'src/include/memlayout.h')
| -rw-r--r-- | src/include/memlayout.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/include/memlayout.h b/src/include/memlayout.h new file mode 100644 index 0000000000..a80e03ef85 --- /dev/null +++ b/src/include/memlayout.h @@ -0,0 +1,105 @@ +/* + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* This file contains macro definitions for memlayout.ld linker scripts. */ + +#ifndef __MEMLAYOUT_H +#define __MEMLAYOUT_H + +#include <arch/memlayout.h> + +#define STR(x) #x + +#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 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__) && !defined(__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 + +#ifdef __RAMSTAGE__ + #define RAMSTAGE(addr, sz) \ + SET_COUNTER(ramstage, addr) \ + _ = ASSERT(_eramstage - _ramstage <= sz, \ + STR(Ramstage exceeded its allotted size! (sz))); \ + INCLUDE "lib/ramstage.ramstage.ld" +#else + #define RAMSTAGE(addr, sz) \ + SET_COUNTER(ramstage, addr) \ + . += sz; +#endif + +#endif /* __MEMLAYOUT_H */ |