582b2aee0f
1) Save the pointer to the FSP HOB list to low memory at address 0x614. This is the same location as CBMEM_RESUME_BACKUP - the two aren't used in the same platform, so overlapping should be OK. I didn't see any documentation that actually said that this location was free to use, and didn't need to be restored after use in S3 resume, but it looks like the DOS boot vector gets loaded juat above this location, so it SHOULD be ok. The alternative is to copy the memory out and store it in cbmem until we're ready to restore it. 2) When a request for the pointer to a CAR variable comes in, pass back the location inside the FSP hob structure. 3) Skip the memcopy of the CAR Data. The CAR variables do not get transitioned back into cbmem, but used out of the HOB structure. 4) Remove the BROKEN_CAR_MIGRATE Kconfig option from the FSP platform. Change-Id: Iaf566dce1b41a3bcb17e4134877f68262b5e113f Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/8196 Reviewed-by: Aaron Durbin <adurbin@google.com> Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
207 lines
7.5 KiB
C
207 lines
7.5 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2009 coresystems GmbH
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* Copyright (C) 2013 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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
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*/
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#ifndef _CBMEM_H_
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#define _CBMEM_H_
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#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) && \
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! IS_ENABLED(CONFIG_RELOCATABLE_RAMSTAGE)
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#define HIGH_MEMORY_SAVE (CONFIG_RAMTOP - CONFIG_RAMBASE)
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#else
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#define HIGH_MEMORY_SAVE 0
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#endif
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#if IS_ENABLED(CONFIG_HAVE_ACPI_RESUME) && \
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defined(CONFIG_HIGH_SCRATCH_MEMORY_SIZE)
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#define HIGH_MEMORY_SCRATCH CONFIG_HIGH_SCRATCH_MEMORY_SIZE
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#else
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#define HIGH_MEMORY_SCRATCH 0
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#endif
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/* Delegation of resume backup memory so we don't have to
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* (slowly) handle backing up OS memory in romstage.c
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*/
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#define CBMEM_BOOT_MODE 0x610
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#define CBMEM_RESUME_BACKUP 0x614
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#define CBMEM_FSP_HOB_PTR 0x614
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#define CBMEM_ID_FREESPACE 0x46524545
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#define CBMEM_ID_GDT 0x4c474454
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#define CBMEM_ID_ACPI 0x41435049
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#define CBMEM_ID_ACPI_GNVS 0x474e5653
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#define CBMEM_ID_ACPI_GNVS_PTR 0x474e5650
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#define CBMEM_ID_IGD_OPREGION 0x4f444749
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#define CBMEM_ID_CBTABLE 0x43425442
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#define CBMEM_ID_PIRQ 0x49525154
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#define CBMEM_ID_MPTABLE 0x534d5054
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#define CBMEM_ID_RESUME 0x5245534d
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#define CBMEM_ID_RESUME_SCRATCH 0x52455343
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#define CBMEM_ID_SMBIOS 0x534d4254
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#define CBMEM_ID_TIMESTAMP 0x54494d45
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#define CBMEM_ID_MRCDATA 0x4d524344
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#define CBMEM_ID_CONSOLE 0x434f4e53
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#define CBMEM_ID_ELOG 0x454c4f47
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#define CBMEM_ID_COVERAGE 0x47434f56
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#define CBMEM_ID_ROMSTAGE_INFO 0x47545352
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#define CBMEM_ID_ROMSTAGE_RAM_STACK 0x90357ac4
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#define CBMEM_ID_RAMSTAGE 0x9a357a9e
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#define CBMEM_ID_RAMSTAGE_CACHE 0x9a3ca54e
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#define CBMEM_ID_ROOT 0xff4007ff
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#define CBMEM_ID_VBOOT_HANDOFF 0x780074f0
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#define CBMEM_ID_CAR_GLOBALS 0xcac4e6a3
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#define CBMEM_ID_EHCI_DEBUG 0xe4c1deb9
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#define CBMEM_ID_REFCODE 0x04efc0de
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#define CBMEM_ID_REFCODE_CACHE 0x4efc0de5
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#define CBMEM_ID_POWER_STATE 0x50535454
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#define CBMEM_ID_SMM_SAVE_SPACE 0x07e9acee
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#define CBMEM_ID_RAM_OOPS 0x05430095
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#define CBMEM_ID_NONE 0x00000000
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#define CBMEM_ID_AGESA_RUNTIME 0x41474553
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#define CBMEM_ID_HOB_POINTER 0x484f4221
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#ifndef __ASSEMBLER__
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#include <stddef.h>
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#include <stdint.h>
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struct cbmem_id_to_name {
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u32 id;
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const char *name;
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};
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#define CBMEM_ID_TO_NAME_TABLE \
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{ CBMEM_ID_FREESPACE, "FREE SPACE " }, \
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{ CBMEM_ID_GDT, "GDT " }, \
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{ CBMEM_ID_ACPI, "ACPI " }, \
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{ CBMEM_ID_CBTABLE, "COREBOOT " }, \
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{ CBMEM_ID_PIRQ, "IRQ TABLE " }, \
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{ CBMEM_ID_MPTABLE, "SMP TABLE " }, \
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{ CBMEM_ID_RESUME, "ACPI RESUME" }, \
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{ CBMEM_ID_RESUME_SCRATCH, "ACPISCRATCH" }, \
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{ CBMEM_ID_ACPI_GNVS, "ACPI GNVS " }, \
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{ CBMEM_ID_ACPI_GNVS_PTR, "GNVS PTR " }, \
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{ CBMEM_ID_SMBIOS, "SMBIOS " }, \
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{ CBMEM_ID_TIMESTAMP, "TIME STAMP " }, \
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{ CBMEM_ID_MRCDATA, "MRC DATA " }, \
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{ CBMEM_ID_CONSOLE, "CONSOLE " }, \
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{ CBMEM_ID_ELOG, "ELOG " }, \
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{ CBMEM_ID_COVERAGE, "COVERAGE " }, \
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{ CBMEM_ID_ROMSTAGE_INFO, "ROMSTAGE " }, \
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{ CBMEM_ID_ROMSTAGE_RAM_STACK, "ROMSTG STCK" }, \
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{ CBMEM_ID_RAMSTAGE, "RAMSTAGE " }, \
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{ CBMEM_ID_RAMSTAGE_CACHE, "RAMSTAGE $ " }, \
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{ CBMEM_ID_ROOT, "CBMEM ROOT " }, \
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{ CBMEM_ID_VBOOT_HANDOFF, "VBOOT " }, \
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{ CBMEM_ID_CAR_GLOBALS, "CAR GLOBALS" }, \
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{ CBMEM_ID_AGESA_RUNTIME, "AGESA RSVD " }, \
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{ CBMEM_ID_EHCI_DEBUG, "USBDEBUG " }, \
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{ CBMEM_ID_REFCODE, "REFCODE " }, \
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{ CBMEM_ID_SMM_SAVE_SPACE, "SMM BACKUP " }, \
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{ CBMEM_ID_REFCODE_CACHE, "REFCODE $ " }, \
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{ CBMEM_ID_POWER_STATE, "POWER STATE" }, \
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{ CBMEM_ID_RAM_OOPS, "RAMOOPS " },
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struct cbmem_entry;
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/*
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* The dynamic cbmem infrastructure allows for growing cbmem dynamically as
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* things are added. It requires an external function, cbmem_top(), to be
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* implemented by the board or chipset to define the upper address where
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* cbmem lives. This address is required to be a 32-bit address. Additionally,
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* the address needs to be consistent in both romstage and ramstage. The
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* dynamic cbmem infrastructure allocates new regions below the last allocated
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* region. Regions are defined by a cbmem_entry struct that is opaque. Regions
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* may be removed, but the last one added is the only that can be removed.
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*
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* Dynamic cbmem has two allocators within it. All allocators use a top down
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* allocation scheme. However, there are 2 modes for each allocation depending
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* on the requested size. There are large allocations and small allocations.
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* An allocation is considered to be small when it is less than or equal to
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* DYN_CBMEM_ALIGN_SIZE / 2. The smaller allocations are fit into a larger
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* allocation region.
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*/
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#define DYN_CBMEM_ALIGN_SIZE (4096)
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/* By default cbmem is attempted to be recovered. Returns 0 if cbmem was
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* recovered or 1 if cbmem had to be reinitialized. */
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int cbmem_initialize(void);
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/* Initialize cbmem to be empty. */
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void cbmem_initialize_empty(void);
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/* Return the top address for dynamic cbmem. The address returned needs to
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* be consistent across romstage and ramstage, and it is required to be
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* below 4GiB. */
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void *cbmem_top(void);
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/* Set the top address for dynamic cbmem. Not for new designs. */
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void cbmem_set_top(void *ramtop);
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/* Add a cbmem entry of a given size and id. These return NULL on failure. The
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* add function performs a find first and do not check against the original
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* size. */
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const struct cbmem_entry *cbmem_entry_add(u32 id, u64 size);
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/* Find a cbmem entry of a given id. These return NULL on failure. */
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const struct cbmem_entry *cbmem_entry_find(u32 id);
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/* Remove a region defined by a cbmem_entry. Returns 0 on success, < 0 on
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* error. Note: A cbmem_entry cannot be removed unless it was the last one
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* added. */
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int cbmem_entry_remove(const struct cbmem_entry *entry);
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/* cbmem_entry accessors to get pointer and size of a cbmem_entry. */
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void *cbmem_entry_start(const struct cbmem_entry *entry);
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u64 cbmem_entry_size(const struct cbmem_entry *entry);
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/* Returns 0 if old cbmem was recovered. Recovery is only attempted if
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* s3resume is non-zero. */
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int cbmem_recovery(int s3resume);
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/* Add a cbmem entry of a given size and id. These return NULL on failure. The
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* add function performs a find first and do not check against the original
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* size. */
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void *cbmem_add(u32 id, u64 size);
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/* Find a cbmem entry of a given id. These return NULL on failure. */
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void *cbmem_find(u32 id);
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void cbmem_run_init_hooks(void);
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void cbmem_fail_resume(void);
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#ifndef __PRE_RAM__
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/* Ramstage only functions. */
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/* Add the cbmem memory used to the memory map at boot. */
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void cbmem_add_bootmem(void);
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void cbmem_list(void);
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void cbmem_print_entry(int n, u32 id, u64 start, u64 size);
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#endif /* __PRE_RAM__ */
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/* These are for compatibility with old boards only. Any new chipset and board
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* must implement cbmem_top() for both romstage and ramstage to support
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* early features like COLLECT_TIMESTAMPS and CBMEM_CONSOLE.
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*/
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#if IS_ENABLED(CONFIG_ARCH_X86) && IS_ENABLED(CONFIG_LATE_CBMEM_INIT)
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unsigned long get_top_of_ram(void);
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void set_top_of_ram(uint64_t ramtop);
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void backup_top_of_ram(uint64_t ramtop);
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#endif
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#endif /* __ASSEMBLER__ */
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#endif /* _CBMEM_H_ */
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