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authorGerald Van Baren <vanbaren@cideas.com>2007-03-31 11:59:59 -0400
committerGerald Van Baren <vanbaren@cideas.com>2007-03-31 11:59:59 -0400
commit7cd5da0fe877e7171a4cdd44880bce783132871a (patch)
treeb938b97ce604e9dadca0ac683275cd8ec9b0f3a3 /libfdt
parent6db7d0af2336c126e4d4b2f248cc23516bdd46a8 (diff)
downloadu-boot-linaro-stable-7cd5da0fe877e7171a4cdd44880bce783132871a.tar.gz
libfdt: Import libfdt source (1 of 2)
This adds the applicable libfdt source files (unmodified) and a README to explain where the source came from.
Diffstat (limited to 'libfdt')
-rw-r--r--libfdt/Makefile88
-rw-r--r--libfdt/README23
-rw-r--r--libfdt/fdt.c124
-rw-r--r--libfdt/fdt_strerror.c64
-rw-r--r--libfdt/libfdt_internal.h41
5 files changed, 340 insertions, 0 deletions
diff --git a/libfdt/Makefile b/libfdt/Makefile
new file mode 100644
index 000000000..c8240bba3
--- /dev/null
+++ b/libfdt/Makefile
@@ -0,0 +1,88 @@
+PREFIX = /usr/local
+TARGETLIBS = libfdt.a
+LIBOBJS = fdt.o fdt_ro.o fdt_wip.o fdt_sw.o fdt_rw.o fdt_strerror.o
+
+SOURCE = $(shell find . -maxdepth 1 ! -name version.h -a -name '*.[h]')
+SOURCE += *.c Makefile
+NODEPTARGETS=<clean>
+
+CPPFLAGS = -I.
+CFLAGS = -Wall -g
+
+LIBDIR = $(PREFIX)/$(LIB32)
+
+EXTRA_DIST = \
+ README \
+ HOWTO \
+ LGPL-2.1
+
+ifdef V
+VECHO = :
+else
+VECHO = echo " "
+ARFLAGS = rc
+.SILENT:
+endif
+
+DEPFILES = $(LIBOBJS:%.o=%.d)
+
+all: libs tests
+
+.PHONY: tests libs
+
+libs: $(TARGETLIBS)
+
+tests: tests/all
+
+tests/%: libs
+ $(MAKE) -C tests $*
+
+check: all
+ cd tests; ./run_tests.sh
+
+checkv: all
+ cd tests; ./run_tests.sh -v
+
+func: all
+ cd tests; ./run_tests.sh -t func
+
+funcv: all
+ cd tests; ./run_tests.sh -t func -v
+
+stress: all
+ cd tests; ./run_tests.sh -t stress
+
+stressv: all
+ cd tests; ./run_tests.sh -t stress -v
+
+%.o: %.c
+ @$(VECHO) CC $@
+ $(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -c $<
+
+libfdt.a: $(LIBOBJS)
+ @$(VECHO) AR $@
+ $(AR) $(ARFLAGS) $@ $^
+
+%.i: %.c
+ @$(VECHO) CPP $@
+ $(CC) $(CPPFLAGS) -E $< > $@
+
+%.s: %.c
+ @$(VECHO) CC -S $@
+ $(CC) $(CPPFLAGS) $(CFLAGS) -o $@ -S $<
+
+clean:
+ @$(VECHO) CLEAN
+ rm -f *~ *.o *.so *.a *.d *.i *.s core a.out $(VERSION)
+ $(MAKE) -C tests clean
+
+%.d: %.c
+ @$(CC) $(CPPFLAGS) -MM -MT "$*.o $@" $< > $@
+
+# Workaround: Don't build dependencies for certain targets
+# When the include below is executed, make will use the %.d target above to
+# generate missing files. For certain targets (clean, version.h, etc) we don't
+# need or want these dependency files, so don't include them in this case.
+ifeq (,$(findstring <$(MAKECMDGOALS)>,$(NODEPTARGETS)))
+-include $(DEPFILES)
+endif
diff --git a/libfdt/README b/libfdt/README
new file mode 100644
index 000000000..f4cca3499
--- /dev/null
+++ b/libfdt/README
@@ -0,0 +1,23 @@
+The libfdt functionality was written by David Gibson. The original
+source came from the git repository:
+
+URL: git://ozlabs.org/home/dgibson/git/libfdt.git
+
+author David Gibson <dgibson@sneetch.(none)>
+ Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100)
+committer David Gibson <dgibson@sneetch.(none)>
+ Fri, 23 Mar 2007 04:16:54 +0000 (15:16 +1100)
+commit 857f54e79f74429af20c2b5ecc00ee98af6a3b8b
+tree 2f648f0f88225a51ded452968d28b4402df8ade0
+parent 07a12a08005f3b5cd9337900a6551e450c07b515
+
+To adapt for u-boot usage, only the applicable files were copied and
+imported into the u-boot git repository.
+Omitted:
+* GPL - u-boot comes with a copy of the GPL license
+* test subdirectory - not directly useful for u-boot
+
+After importing, other customizations were performed. See the git log
+for details.
+
+Jerry Van Baren
diff --git a/libfdt/fdt.c b/libfdt/fdt.c
new file mode 100644
index 000000000..772da46a7
--- /dev/null
+++ b/libfdt/fdt.c
@@ -0,0 +1,124 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int _fdt_check_header(const void *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 (fdt_size_dt_struct(fdt) == 0)
+ return -FDT_ERR_BADSTATE;
+ } else {
+ return -FDT_ERR_BADMAGIC;
+ }
+
+ return 0;
+}
+
+void *fdt_offset_ptr(const void *fdt, int offset, int len)
+{
+ void *p;
+
+ if (fdt_version(fdt) >= 0x11)
+ if (((offset + len) < offset)
+ || ((offset + len) > fdt_size_dt_struct(fdt)))
+ return NULL;
+
+ p = _fdt_offset_ptr(fdt, offset);
+
+ if (p + len < p)
+ return NULL;
+ return p;
+}
+
+uint32_t _fdt_next_tag(const void *fdt, int offset, int *nextoffset)
+{
+ const uint32_t *tagp, *lenp;
+ uint32_t tag;
+ const char *p;
+
+ if (offset % FDT_TAGSIZE)
+ return -1;
+
+ tagp = fdt_offset_ptr(fdt, offset, FDT_TAGSIZE);
+ if (! tagp)
+ return FDT_END; /* premature end */
+ tag = fdt32_to_cpu(*tagp);
+ offset += FDT_TAGSIZE;
+
+ switch (tag) {
+ case FDT_BEGIN_NODE:
+ /* skip name */
+ do {
+ p = fdt_offset_ptr(fdt, offset++, 1);
+ } while (p && (*p != '\0'));
+ if (! p)
+ return FDT_END;
+ break;
+ case FDT_PROP:
+ lenp = fdt_offset_ptr(fdt, offset, sizeof(*lenp));
+ if (! lenp)
+ return FDT_END;
+ /* skip name offset, length and value */
+ offset += 2*FDT_TAGSIZE + fdt32_to_cpu(*lenp);
+ break;
+ }
+
+ if (nextoffset)
+ *nextoffset = ALIGN(offset, FDT_TAGSIZE);
+
+ return tag;
+}
+
+const char *_fdt_find_string(const char *strtab, int tabsize, const char *s)
+{
+ int len = strlen(s) + 1;
+ const char *last = strtab + tabsize - len;
+ const char *p;
+
+ for (p = strtab; p <= last; p++)
+ if (memeq(p, s, len))
+ return p;
+ return NULL;
+}
+
+int fdt_move(const void *fdt, void *buf, int bufsize)
+{
+ int err = _fdt_check_header(fdt);
+
+ if (err)
+ return err;
+
+ if (fdt_totalsize(fdt) > bufsize)
+ return -FDT_ERR_NOSPACE;
+
+ memmove(buf, fdt, fdt_totalsize(fdt));
+ return 0;
+}
diff --git a/libfdt/fdt_strerror.c b/libfdt/fdt_strerror.c
new file mode 100644
index 000000000..7f231ce46
--- /dev/null
+++ b/libfdt/fdt_strerror.c
@@ -0,0 +1,64 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+struct errtabent {
+ const char *str;
+};
+
+#define ERRTABENT(val) \
+ [(val)] = { .str = #val, }
+
+static struct errtabent errtable[] = {
+ ERRTABENT(FDT_ERR_NOTFOUND),
+ ERRTABENT(FDT_ERR_EXISTS),
+ ERRTABENT(FDT_ERR_NOSPACE),
+
+ ERRTABENT(FDT_ERR_BADOFFSET),
+ ERRTABENT(FDT_ERR_BADPATH),
+ ERRTABENT(FDT_ERR_BADSTATE),
+
+ ERRTABENT(FDT_ERR_TRUNCATED),
+ ERRTABENT(FDT_ERR_BADMAGIC),
+ ERRTABENT(FDT_ERR_BADVERSION),
+ ERRTABENT(FDT_ERR_BADSTRUCTURE),
+ ERRTABENT(FDT_ERR_BADLAYOUT),
+};
+#define ERRTABSIZE (sizeof(errtable) / sizeof(errtable[0]))
+
+const char *fdt_strerror(int errval)
+{
+ if (errval > 0)
+ return "<valid offset/length>";
+ else if (errval == 0)
+ return "<no error>";
+ else if (errval > -ERRTABSIZE) {
+ const char *s = errtable[-errval].str;
+
+ if (s)
+ return s;
+ }
+
+ return "<unknown error>";
+}
diff --git a/libfdt/libfdt_internal.h b/libfdt/libfdt_internal.h
new file mode 100644
index 000000000..124bef78e
--- /dev/null
+++ b/libfdt/libfdt_internal.h
@@ -0,0 +1,41 @@
+#ifndef _LIBFDT_INTERNAL_H
+#define _LIBFDT_INTERNAL_H
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2006 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include <fdt.h>
+
+#define ALIGN(x, a) (((x) + (a) - 1) & ~((a) - 1))
+#define PALIGN(p, a) ((void *)ALIGN((unsigned long)(p), (a)))
+
+#define memeq(p, q, n) (memcmp((p), (q), (n)) == 0)
+#define streq(p, q) (strcmp((p), (q)) == 0)
+
+int _fdt_check_header(const void *fdt);
+uint32_t _fdt_next_tag(const void *fdt, int startoffset, int *nextoffset);
+const char *_fdt_find_string(const char *strtab, int tabsize, const char *s);
+int _fdt_node_end_offset(void *fdt, int nodeoffset);
+
+static inline void *_fdt_offset_ptr(const struct fdt_header *fdt, int offset)
+{
+ return (void *)fdt + fdt_off_dt_struct(fdt) + offset;
+}
+
+#define SW_MAGIC (~FDT_MAGIC)
+
+#endif /* _LIBFDT_INTERNAL_H */