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libfdt: Implement fdt_move()

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Implement the fdt_move() function for copying/moving device trees
to a new buffer, or within an existing buffer.
This commit is contained in:
David Gibson 2006-12-01 15:07:19 +11:00
parent ede25deae6
commit 423697628a
7 changed files with 119 additions and 24 deletions
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21
fdt_ro.c
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@ -23,29 +23,10 @@
#include "libfdt_internal.h"
static int check_header(const struct fdt_header *fdt)
{
if (fdt_magic(fdt) == FDT_MAGIC) {
/* Complete tree */
if (fdt_version(fdt) < FDT_FIRST_SUPPORTED_VERSION)
return FDT_ERR_BADVERSION;
if (fdt_last_comp_version(fdt) > FDT_LAST_SUPPORTED_VERSION)
return FDT_ERR_BADVERSION;
} else if (fdt_magic(fdt) == SW_MAGIC) {
/* Unfinished sequential-write blob */
if (sw_size_dt_struct(fdt) == 0)
return FDT_ERR_BADSTATE;
} else {
return FDT_ERR_BADMAGIC;
}
return 0;
}
#define OFFSET_CHECK_HEADER(fdt) \
{ \
int err; \
if ((err = check_header(fdt)) != 0) \
if ((err = _fdt_check_header(fdt)) != 0) \
return OFFSET_ERROR(err); \
}