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libfdt: Add functions to get/add/delete memory reservemap entries

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This patch adds functions to libfdt for accessing the memory
reservation map section of a device tree blob.  fdt_num_mem_rsv()
retreives the number of reservation entries in a dtb, and
fdt_get_mem_rsv() retreives a specific reservation entry.
fdt_add_mem_rsv() adds a new entry, and fdt_del_mem_rsv() removes a
specific numbered entry.

Testcases for these new functions are also included.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
David Gibson 2007-10-10 17:12:12 +10:00 • committed by Jon Loeliger
parent ad9593f229
commit fd1bf3a5ae
13 changed files with 131 additions and 3 deletions
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12
libfdt/libfdt_internal.h
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@ -73,6 +73,18 @@ static inline void *_fdt_offset_ptr_w(void *fdt, int offset)
return (void *)_fdt_offset_ptr(fdt, offset);
}
static inline const struct fdt_reserve_entry *_fdt_mem_rsv(const void *fdt, int n)
{
const struct fdt_reserve_entry *rsv_table =
fdt + fdt_off_mem_rsvmap(fdt);
return rsv_table + n;
}
static inline struct fdt_reserve_entry *_fdt_mem_rsv_w(void *fdt, int n)
{
return (void *)_fdt_mem_rsv(fdt, n);
}
#define SW_MAGIC (~FDT_MAGIC)
#endif /* _LIBFDT_INTERNAL_H */