1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 #ifndef _LINUX_LMB_H 3 #define _LINUX_LMB_H 4 #ifdef __KERNEL__ 5 6 #include <asm/types.h> 7 #include <asm/u-boot.h> 8 9 /* 10 * Logical memory blocks. 11 * 12 * Copyright (C) 2001 Peter Bergner, IBM Corp. 13 */ 14 15 #define MAX_LMB_REGIONS 8 16 17 struct lmb_property { 18 phys_addr_t base; 19 phys_size_t size; 20 }; 21 22 struct lmb_region { 23 unsigned long cnt; 24 phys_size_t size; 25 struct lmb_property region[MAX_LMB_REGIONS+1]; 26 }; 27 28 struct lmb { 29 struct lmb_region memory; 30 struct lmb_region reserved; 31 }; 32 33 extern void lmb_init(struct lmb *lmb); 34 extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob); 35 extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base, 36 phys_size_t size, void *fdt_blob); 37 extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size); 38 extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size); 39 extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align); 40 extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, 41 phys_addr_t max_addr); 42 extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align, 43 phys_addr_t max_addr); 44 extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base, 45 phys_size_t size); 46 extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr); 47 extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr); 48 extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size); 49 50 extern void lmb_dump_all(struct lmb *lmb); 51 52 static inline phys_size_t 53 lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) 54 { 55 return type->region[region_nr].size; 56 } 57 58 void board_lmb_reserve(struct lmb *lmb); 59 void arch_lmb_reserve(struct lmb *lmb); 60 61 #endif /* __KERNEL__ */ 62 63 #endif /* _LINUX_LMB_H */ 64