cefe89ee79
This patch adds an optional pre-RAM cache for the FMAP which most platforms should be able to use, complementing the recently added post-RAM FMAP cache in CBMEM. vboot systems currently read the FMAP about half a dozen times from flash in verstage, which will all be coalesced into a single read with this patch. It will also help future vboot improvements since when FMAP reads become "free" vboot doesn't need to keep track of so much information separately. In order to make sure we have a single, well-defined point where the new cache is first initialized, eliminate the build-time hardcoding of the CBFS section offsets, so that all CBFS accesses explicitly read the FMAP. Add FMAP_CACHEs to all platforms that can afford it (other than the RISC-V things where I have no idea how they work), trying to take the space from things that look like they were oversized anyway (pre-RAM consoles and CBFS caches). Change-Id: I2820436776ef620bdc4481b5cd4b6957764248ea Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/36657 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Joel Kitching <kitching@google.com>
202 lines
6 KiB
C
202 lines
6 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright 2014 Google Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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/* This file contains macro definitions for memlayout.ld linker scripts. */
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#ifndef __MEMLAYOUT_H
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#define __MEMLAYOUT_H
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#include <arch/memlayout.h>
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#include <vb2_constants.h>
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#include "fmap_config.h"
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/* Macros that the architecture can override. */
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#ifndef ARCH_POINTER_ALIGN_SIZE
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#define ARCH_POINTER_ALIGN_SIZE 8
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#endif
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#ifndef ARCH_CACHELINE_ALIGN_SIZE
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#define ARCH_CACHELINE_ALIGN_SIZE 64
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#endif
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#define STR(x) XSTR(x)
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#define XSTR(x) #x
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#define ALIGN_COUNTER(align) \
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. = ALIGN(align);
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#define SET_COUNTER(name, addr) \
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_ = ASSERT(. <= addr, STR(name overlaps the previous region!)); \
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. = addr;
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#define SYMBOL(name, addr) \
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SET_COUNTER(name, addr) \
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_##name = .;
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#define REGION(name, addr, size, expected_align) \
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SYMBOL(name, addr) \
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_ = ASSERT(. == ALIGN(expected_align), \
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STR(name must be aligned to expected_align!)); \
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SYMBOL(e##name, addr + size)
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#define ALIAS_REGION(name, alias) \
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_##alias = _##name; \
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_e##alias = _e##name;
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/* Declare according to SRAM/DRAM ranges in SoC hardware-defined address map. */
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#define SRAM_START(addr) SYMBOL(sram, addr)
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#define SRAM_END(addr) SYMBOL(esram, addr)
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#define DRAM_START(addr) SYMBOL(dram, addr)
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#define TIMESTAMP(addr, size) \
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REGION(timestamp, addr, size, 8) \
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_ = ASSERT(size >= 212, "Timestamp region must fit timestamp_cache!");
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#define PRERAM_CBMEM_CONSOLE(addr, size) \
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REGION(preram_cbmem_console, addr, size, 4)
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/* Use either CBFS_CACHE (unified) or both (PRERAM|POSTRAM)_CBFS_CACHE */
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#define CBFS_CACHE(addr, size) \
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REGION(cbfs_cache, addr, size, 4) \
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ALIAS_REGION(cbfs_cache, preram_cbfs_cache) \
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ALIAS_REGION(cbfs_cache, postram_cbfs_cache)
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#define FMAP_CACHE(addr, sz) \
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REGION(fmap_cache, addr, sz, 4) \
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_ = ASSERT(sz == 0 || sz >= FMAP_SIZE, \
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STR(FMAP does not fit in FMAP_CACHE! (sz < FMAP_SIZE)));
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#if ENV_ROMSTAGE_OR_BEFORE
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#define PRERAM_CBFS_CACHE(addr, size) \
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REGION(preram_cbfs_cache, addr, size, 4) \
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ALIAS_REGION(preram_cbfs_cache, cbfs_cache)
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#define POSTRAM_CBFS_CACHE(addr, size) \
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REGION(postram_cbfs_cache, addr, size, 4)
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#else
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#define PRERAM_CBFS_CACHE(addr, size) \
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REGION(preram_cbfs_cache, addr, size, 4)
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#define POSTRAM_CBFS_CACHE(addr, size) \
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REGION(postram_cbfs_cache, addr, size, 4) \
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ALIAS_REGION(postram_cbfs_cache, cbfs_cache)
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#endif
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/* Careful: 'INCLUDE <filename>' must always be at the end of the output line */
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#if ENV_DECOMPRESSOR
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#define DECOMPRESSOR(addr, sz) \
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SYMBOL(decompressor, addr) \
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_edecompressor = _decompressor + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(decompressor exceeded its allotted size! (sz))); \
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INCLUDE "decompressor/lib/program.ld"
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#define OVERLAP_DECOMPRESSOR_ROMSTAGE(addr, sz) DECOMPRESSOR(addr, sz)
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#define OVERLAP_DECOMPRESSOR_VERSTAGE_ROMSTAGE(addr, sz) \
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DECOMPRESSOR(addr, sz)
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#else
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#define DECOMPRESSOR(addr, sz) \
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REGION(decompressor, addr, sz, 1)
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#define OVERLAP_DECOMPRESSOR_ROMSTAGE(addr, sz) ROMSTAGE(addr, sz)
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#define OVERLAP_DECOMPRESSOR_VERSTAGE_ROMSTAGE(addr, sz) \
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OVERLAP_VERSTAGE_ROMSTAGE(addr, sz)
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#endif
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#if ENV_BOOTBLOCK
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#define BOOTBLOCK(addr, sz) \
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SYMBOL(bootblock, addr) \
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_ebootblock = _bootblock + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(Bootblock exceeded its allotted size! (sz))); \
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INCLUDE "bootblock/lib/program.ld"
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#else
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#define BOOTBLOCK(addr, sz) \
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REGION(bootblock, addr, sz, 1)
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#endif
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#if ENV_ROMSTAGE
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#define ROMSTAGE(addr, sz) \
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SYMBOL(romstage, addr) \
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_eromstage = _romstage + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(Romstage exceeded its allotted size! (sz))); \
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INCLUDE "romstage/lib/program.ld"
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#else
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#define ROMSTAGE(addr, sz) \
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REGION(romstage, addr, sz, 1)
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#endif
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#if ENV_RAMSTAGE
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#define RAMSTAGE(addr, sz) \
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SYMBOL(ramstage, addr) \
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_eramstage = _ramstage + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(Ramstage exceeded its allotted size! (sz))); \
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INCLUDE "ramstage/lib/program.ld"
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#else
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#define RAMSTAGE(addr, sz) \
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REGION(ramstage, addr, sz, 1)
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#endif
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/* VBOOT2_WORK must always use VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE for its
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* size argument. The constant is imported via vb2_workbuf_size.h. */
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#define VBOOT2_WORK(addr, sz) \
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REGION(vboot2_work, addr, sz, 16) \
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_ = ASSERT(sz == VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE, \
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STR(vboot2 work buffer size must be equivalent to \
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VB2_FIRMWARE_WORKBUF_RECOMMENDED_SIZE! (sz)));
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#define VBOOT2_TPM_LOG(addr, size) \
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REGION(vboot2_tpm_log, addr, size, 16) \
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_ = ASSERT(size >= 2K, "vboot2 tpm log buffer must be at least 2K!");
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#if ENV_VERSTAGE
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#define VERSTAGE(addr, sz) \
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SYMBOL(verstage, addr) \
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_everstage = _verstage + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(Verstage exceeded its allotted size! (sz))); \
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INCLUDE "verstage/lib/program.ld"
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#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) \
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_ = ASSERT(CONFIG(VBOOT_RETURN_FROM_VERSTAGE) == 1, \
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"Must set RETURN_FROM_VERSTAGE to overlap romstage."); \
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VERSTAGE(addr, size)
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#else
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#define VERSTAGE(addr, sz) \
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REGION(verstage, addr, sz, 1)
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#define OVERLAP_VERSTAGE_ROMSTAGE(addr, size) ROMSTAGE(addr, size)
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#endif
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#if ENV_POSTCAR
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#define POSTCAR(addr, sz) \
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SYMBOL(postcar, addr) \
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_epostcar = _postcar + sz; \
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_ = ASSERT(_eprogram - _program <= sz, \
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STR(Aftercar exceeded its allotted size! (sz))); \
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INCLUDE "postcar/lib/program.ld"
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#else
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#define POSTCAR(addr, sz) \
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REGION(postcar, addr, sz, 1)
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#endif
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#define WATCHDOG_TOMBSTONE(addr, size) \
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REGION(watchdog_tombstone, addr, size, 4) \
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_ = ASSERT(size == 4, "watchdog tombstones should be exactly 4 byte!");
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#endif /* __MEMLAYOUT_H */
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