1 files changed, 63 insertions, 0 deletions
diff --git a/include/lmb.h b/include/lmb.h
new file mode 100644
index 0000000..3b338df
--- /dev/null
+++ b/include/lmb.h
@@ -0,0 +1,63 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+#ifndef _LINUX_LMB_H
+#define _LINUX_LMB_H
+#ifdef __KERNEL__
+
+#include <asm/types.h>
+#include <asm/u-boot.h>
+
+/*
+ * Logical memory blocks.
+ *
+ * Copyright (C) 2001 Peter Bergner, IBM Corp.
+ */
+
+#define MAX_LMB_REGIONS 8
+
+struct lmb_property {
+	phys_addr_t base;
+	phys_size_t size;
+};
+
+struct lmb_region {
+	unsigned long cnt;
+	phys_size_t size;
+	struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+	struct lmb_region memory;
+	struct lmb_region reserved;
+};
+
+extern void lmb_init(struct lmb *lmb);
+extern void lmb_init_and_reserve(struct lmb *lmb, bd_t *bd, void *fdt_blob);
+extern void lmb_init_and_reserve_range(struct lmb *lmb, phys_addr_t base,
+				       phys_size_t size, void *fdt_blob);
+extern long lmb_add(struct lmb *lmb, phys_addr_t base, phys_size_t size);
+extern long lmb_reserve(struct lmb *lmb, phys_addr_t base, phys_size_t size);
+extern phys_addr_t lmb_alloc(struct lmb *lmb, phys_size_t size, ulong align);
+extern phys_addr_t lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
+			    phys_addr_t max_addr);
+extern phys_addr_t __lmb_alloc_base(struct lmb *lmb, phys_size_t size, ulong align,
+			      phys_addr_t max_addr);
+extern phys_addr_t lmb_alloc_addr(struct lmb *lmb, phys_addr_t base,
+				  phys_size_t size);
+extern phys_size_t lmb_get_free_size(struct lmb *lmb, phys_addr_t addr);
+extern int lmb_is_reserved(struct lmb *lmb, phys_addr_t addr);
+extern long lmb_free(struct lmb *lmb, phys_addr_t base, phys_size_t size);
+
+extern void lmb_dump_all(struct lmb *lmb);
+
+static inline phys_size_t
+lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
+{
+	return type->region[region_nr].size;
+}
+
+void board_lmb_reserve(struct lmb *lmb);
+void arch_lmb_reserve(struct lmb *lmb);
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_LMB_H */