/* * This file is part of the coreboot project. * * Copyright (C) 2009 coresystems GmbH * Copyright (C) 2013 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 */ #ifndef _CBMEM_H_ #define _CBMEM_H_ /* Reserve 128k for ACPI and other tables */ #if CONFIG_CONSOLE_CBMEM #define HIGH_MEMORY_DEF_SIZE ( 256 * 1024 ) #else #define HIGH_MEMORY_DEF_SIZE ( 128 * 1024 ) #endif #if CONFIG_HAVE_ACPI_RESUME #if CONFIG_RELOCATABLE_RAMSTAGE #define HIGH_MEMORY_SAVE 0 #else #define HIGH_MEMORY_SAVE (CONFIG_RAMTOP - CONFIG_RAMBASE) #endif #define HIGH_MEMORY_SIZE (HIGH_MEMORY_SAVE + CONFIG_HIGH_SCRATCH_MEMORY_SIZE + HIGH_MEMORY_DEF_SIZE) /* Delegation of resume backup memory so we don't have to * (slowly) handle backing up OS memory in romstage.c */ #define CBMEM_BOOT_MODE 0x610 #define CBMEM_RESUME_BACKUP 0x614 #else /* CONFIG_HAVE_ACPI_RESUME */ #define HIGH_MEMORY_SIZE HIGH_MEMORY_DEF_SIZE #endif /* CONFIG_HAVE_ACPI_RESUME */ #define CBMEM_ID_FREESPACE 0x46524545 #define CBMEM_ID_GDT 0x4c474454 #define CBMEM_ID_ACPI 0x41435049 #define CBMEM_ID_ACPI_GNVS 0x474e5653 #define CBMEM_ID_ACPI_GNVS_PTR 0x474e5650 #define CBMEM_ID_CBTABLE 0x43425442 #define CBMEM_ID_PIRQ 0x49525154 #define CBMEM_ID_MPTABLE 0x534d5054 #define CBMEM_ID_RESUME 0x5245534d #define CBMEM_ID_RESUME_SCRATCH 0x52455343 #define CBMEM_ID_SMBIOS 0x534d4254 #define CBMEM_ID_TIMESTAMP 0x54494d45 #define CBMEM_ID_MRCDATA 0x4d524344 #define CBMEM_ID_CONSOLE 0x434f4e53 #define CBMEM_ID_ELOG 0x454c4f47 #define CBMEM_ID_COVERAGE 0x47434f56 #define CBMEM_ID_ROMSTAGE_INFO 0x47545352 #define CBMEM_ID_ROMSTAGE_RAM_STACK 0x90357ac4 #define CBMEM_ID_RAMSTAGE 0x9a357a9e #define CBMEM_ID_RAMSTAGE_CACHE 0x9a3ca54e #define CBMEM_ID_ROOT 0xff4007ff #define CBMEM_ID_VBOOT_HANDOFF 0x780074f0 #define CBMEM_ID_CAR_GLOBALS 0xcac4e6a3 #define CBMEM_ID_EHCI_DEBUG 0xe4c1deb9 #define CBMEM_ID_NONE 0x00000000 #define CBMEM_ID_AGESA_RUNTIME 0x41474553 #ifndef __ASSEMBLER__ #include struct cbmem_entry; #if CONFIG_DYNAMIC_CBMEM /* * The dynamic cbmem infrastructure allows for growing cbmem dynamically as * things are added. It requires an external function, cbmem_top(), to be * implemented by the board or chipset to define the upper address where * cbmem lives. This address is required to be a 32-bit address. Additionally, * the address needs to be consistent in both romstage and ramstage. The * dynamic cbmem infrastructure allocates new regions below the last allocated * region. Regions are defined by a cbmem_entry struct that is opaque. Regions * may be removed, but the last one added is the only that can be removed. * * Dynamic cbmem has two allocators within it. All allocators use a top down * allocation scheme. However, there are 2 modes for each allocation depending * on the requested size. There are large allocations and small allocations. * An allocation is considered to be small when it is less than or equal to * DYN_CBMEM_ALIGN_SIZE / 2. The smaller allocations are fit into a larger * allocation region. */ #define DYN_CBMEM_ALIGN_SIZE (4096) /* Initialize cbmem to be empty. */ void cbmem_initialize_empty(void); /* Return the top address for dynamic cbmem. The address returned needs to * be consistent across romstage and ramstage, and it is required to be * below 4GiB. */ void *cbmem_top(void); /* Add a cbmem entry of a given size and id. These return NULL on failure. The * add function performs a find first and do not check against the original * size. */ const struct cbmem_entry *cbmem_entry_add(u32 id, u64 size); /* Find a cbmem entry of a given id. These return NULL on failure. */ const struct cbmem_entry *cbmem_entry_find(u32 id); /* Remove a region defined by a cbmem_entry. Returns 0 on success, < 0 on * error. Note: A cbmem_entry cannot be removed unless it was the last one * added. */ int cbmem_entry_remove(const struct cbmem_entry *entry); /* cbmem_entry accessors to get pointer and size of a cbmem_entry. */ void *cbmem_entry_start(const struct cbmem_entry *entry); u64 cbmem_entry_size(const struct cbmem_entry *entry); #else /* !CONFIG_DYNAMIC_CBMEM */ #ifndef __PRE_RAM__ extern uint64_t high_tables_base, high_tables_size; void set_top_of_ram(uint64_t ramtop); void cbmem_late_set_table(uint64_t base, uint64_t size); void set_cbmem_toc(struct cbmem_entry *); int cbmem_base_check(void); #endif void cbmem_init(u64 baseaddr, u64 size); int cbmem_reinit(u64 baseaddr); extern struct cbmem_entry *get_cbmem_toc(void); #endif /* CONFIG_DYNAMIC_CBMEM */ /* Common API between cbmem and dynamic cbmem. */ unsigned long get_top_of_ram(void); /* By default cbmem is attempted to be recovered. Returns 0 if cbmem was * recovered or 1 if cbmem had to be reinitialized. */ int cbmem_initialize(void); /* Add a cbmem entry of a given size and id. These return NULL on failure. The * add function performs a find first and do not check against the original * size. */ void *cbmem_add(u32 id, u64 size); /* Find a cbmem entry of a given id. These return NULL on failure. */ void *cbmem_find(u32 id); #ifndef __PRE_RAM__ /* Ramstage only functions. */ /* Add the cbmem memory used to the memory tables. */ struct lb_memory; void cbmem_add_lb_mem(struct lb_memory *mem); void cbmem_list(void); void cbmem_arch_init(void); void cbmem_print_entry(int n, u32 id, u64 start, u64 size); #else static inline void cbmem_arch_init(void) {} #endif /* __PRE_RAM__ */ #endif /* __ASSEMBLER__ */ #endif /* _CBMEM_H_ */