90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/* Copyright 2013-2014 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __MEMORY_REGION
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#define __MEMORY_REGION
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#include <ccan/list/list.h>
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#include <stdint.h>
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#include <lock.h>
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enum mem_region_type {
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/* ranges allocatable by mem_alloc: this will be most of memory */
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REGION_SKIBOOT_HEAP,
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/* ranges allocatable by mem_alloc but shrunk (e.g. whole memory) */
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REGION_MEMORY,
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/* ranges used explicitly for skiboot, but not allocatable. eg .text */
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REGION_SKIBOOT_FIRMWARE,
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/* ranges reserved before skiboot init, eg HBRT memory */
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REGION_FW_RESERVED,
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/* ranges reserved, eg HW framebuffer */
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REGION_RESERVED,
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/* ranges available for the OS, created by mem_region_release_unused */
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REGION_OS,
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};
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/* An area of physical memory. */
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struct mem_region {
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struct list_node list;
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const char *name;
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uint64_t start, len;
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struct dt_node *node;
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enum mem_region_type type;
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struct list_head free_list;
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struct lock free_list_lock;
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};
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extern struct lock mem_region_lock;
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extern unsigned long top_of_ram;
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void *mem_alloc(struct mem_region *region, size_t size, size_t align,
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const char *location);
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void mem_free(struct mem_region *region, void *mem,
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const char *location);
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bool mem_resize(struct mem_region *region, void *mem, size_t len,
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const char *location);
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size_t mem_allocated_size(const void *ptr);
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bool mem_check(const struct mem_region *region);
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bool mem_check_all(void);
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void mem_region_release_unused(void);
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void start_mem_region_clear_unused(void);
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void wait_mem_region_clear_unused(void);
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int64_t mem_dump_free(void);
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void mem_dump_allocs(void);
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/* Specifically for working on the heap. */
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extern struct mem_region skiboot_heap;
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void mem_region_init(void);
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void mem_region_add_dt_reserved(void);
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/* Mark memory as reserved */
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void mem_reserve_fw(const char *name, uint64_t start, uint64_t len);
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void mem_reserve_hwbuf(const char *name, uint64_t start, uint64_t len);
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struct mem_region *find_mem_region(const char *name);
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bool mem_range_is_reserved(uint64_t start, uint64_t size);
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/* Read-only memory checksum */
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bool verify_romem(void);
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#endif /* __MEMORY_REGION */
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