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authorKumar Gala <galak@kernel.crashing.org>2008-02-27 21:51:47 -0600
committerMarian Balakowicz <m8@semihalf.com>2008-02-29 13:15:55 +0100
commit4ed6552f715983bfc7d212c1199a1f796f1144ad (patch)
tree9588ceff4adbabc534b5621ff3c6e2f8a3c7aa6e /include/lmb.h
parent4648c2e7a173b0d7f17bef4adaa0623090c9e904 (diff)
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[new uImage] Introduce lmb from linux kernel for memory mgmt of boot images
Introduce the LMB lib used on PPC in the kernel as a clean way to manage the memory spaces used by various boot images and structures. This code will allow us to simplify the code in bootm and its support functions. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include/lmb.h')
-rw-r--r--include/lmb.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/include/lmb.h b/include/lmb.h
new file mode 100644
index 0000000..cc64cbb
--- /dev/null
+++ b/include/lmb.h
@@ -0,0 +1,54 @@
+#ifndef _LINUX_LMB_H
+#define _LINUX_LMB_H
+#ifdef __KERNEL__
+
+#include <asm/types.h>
+/*
+ * Logical memory blocks.
+ *
+ * Copyright (C) 2001 Peter Bergner, IBM Corp.
+ *
+ * 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; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#define MAX_LMB_REGIONS 8
+
+struct lmb_property {
+ ulong base;
+ ulong size;
+};
+
+struct lmb_region {
+ unsigned long cnt;
+ ulong size;
+ struct lmb_property region[MAX_LMB_REGIONS+1];
+};
+
+struct lmb {
+ struct lmb_region memory;
+ struct lmb_region reserved;
+};
+
+extern struct lmb lmb;
+
+extern void lmb_init(struct lmb *lmb);
+extern long lmb_add(struct lmb *lmb, ulong base, ulong size);
+extern long lmb_reserve(struct lmb *lmb, ulong base, ulong size);
+extern ulong lmb_alloc(struct lmb *lmb, ulong size, ulong align);
+extern ulong lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
+extern ulong __lmb_alloc_base(struct lmb *lmb, ulong size, ulong align, ulong max_addr);
+extern int lmb_is_reserved(struct lmb *lmb, ulong addr);
+
+extern void lmb_dump_all(struct lmb *lmb);
+
+static inline ulong
+lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
+{
+ return type->region[region_nr].size;
+}
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_LMB_H */