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authorStephen Warren <swarren@nvidia.com>2012-09-28 23:25:59 +0200
committerRob Herring <rob.herring@calxeda.com>2012-10-01 18:11:35 +0200
commitcd296721a9645f9f28800a072490fa15458d1fb7 (patch)
tree492b9a268a48af07844fbbd39519f95676ee73fe /scripts/dtc/util.h
parentdt: Document general interrupt controller bindings (diff)
downloadlinux-cd296721a9645f9f28800a072490fa15458d1fb7.tar.xz
linux-cd296721a9645f9f28800a072490fa15458d1fb7.zip
dtc: import latest upstream dtc
This updates scripts/dtc to commit 317a5d9 "dtc: zero out new label objects" from git://git.jdl.com/software/dtc.git. This adds features such as: * /bits/ syntax for cell data. * Math expressions within cell data. * The ability to delete properties or nodes. * Support for #line directives in the input file, which allows the use of cpp on *.dts. * -i command-line option (/include/ path) * -W/-E command-line options for error/warning control. * Removal of spew to STDOUT containing the filename being compiled. * Many additions to the libfdt API. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Jon Loeliger <jdl@jdl.com> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'scripts/dtc/util.h')
-rw-r--r--scripts/dtc/util.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/scripts/dtc/util.h b/scripts/dtc/util.h
index 9cead842c11e..c8eb45d9f04b 100644
--- a/scripts/dtc/util.h
+++ b/scripts/dtc/util.h
@@ -1,7 +1,10 @@
#ifndef _UTIL_H
#define _UTIL_H
+#include <stdarg.h>
+
/*
+ * Copyright 2011 The Chromium Authors, All Rights Reserved.
* Copyright 2008 Jon Loeliger, Freescale Semiconductor, Inc.
*
* This program is free software; you can redistribute it and/or
@@ -53,4 +56,98 @@ static inline void *xrealloc(void *p, size_t len)
extern char *xstrdup(const char *s);
extern char *join_path(const char *path, const char *name);
+/**
+ * Check a string of a given length to see if it is all printable and
+ * has a valid terminator.
+ *
+ * @param data The string to check
+ * @param len The string length including terminator
+ * @return 1 if a valid printable string, 0 if not */
+int util_is_printable_string(const void *data, int len);
+
+/*
+ * Parse an escaped character starting at index i in string s. The resulting
+ * character will be returned and the index i will be updated to point at the
+ * character directly after the end of the encoding, this may be the '\0'
+ * terminator of the string.
+ */
+char get_escape_char(const char *s, int *i);
+
+/**
+ * Read a device tree file into a buffer. This will report any errors on
+ * stderr.
+ *
+ * @param filename The filename to read, or - for stdin
+ * @return Pointer to allocated buffer containing fdt, or NULL on error
+ */
+char *utilfdt_read(const char *filename);
+
+/**
+ * Read a device tree file into a buffer. Does not report errors, but only
+ * returns them. The value returned can be passed to strerror() to obtain
+ * an error message for the user.
+ *
+ * @param filename The filename to read, or - for stdin
+ * @param buffp Returns pointer to buffer containing fdt
+ * @return 0 if ok, else an errno value representing the error
+ */
+int utilfdt_read_err(const char *filename, char **buffp);
+
+
+/**
+ * Write a device tree buffer to a file. This will report any errors on
+ * stderr.
+ *
+ * @param filename The filename to write, or - for stdout
+ * @param blob Poiner to buffer containing fdt
+ * @return 0 if ok, -1 on error
+ */
+int utilfdt_write(const char *filename, const void *blob);
+
+/**
+ * Write a device tree buffer to a file. Does not report errors, but only
+ * returns them. The value returned can be passed to strerror() to obtain
+ * an error message for the user.
+ *
+ * @param filename The filename to write, or - for stdout
+ * @param blob Poiner to buffer containing fdt
+ * @return 0 if ok, else an errno value representing the error
+ */
+int utilfdt_write_err(const char *filename, const void *blob);
+
+/**
+ * Decode a data type string. The purpose of this string
+ *
+ * The string consists of an optional character followed by the type:
+ * Modifier characters:
+ * hh or b 1 byte
+ * h 2 byte
+ * l 4 byte, default
+ *
+ * Type character:
+ * s string
+ * i signed integer
+ * u unsigned integer
+ * x hex
+ *
+ * TODO: Implement ll modifier (8 bytes)
+ * TODO: Implement o type (octal)
+ *
+ * @param fmt Format string to process
+ * @param type Returns type found(s/d/u/x), or 0 if none
+ * @param size Returns size found(1,2,4,8) or 4 if none
+ * @return 0 if ok, -1 on error (no type given, or other invalid format)
+ */
+int utilfdt_decode_type(const char *fmt, int *type, int *size);
+
+/*
+ * This is a usage message fragment for the -t option. It is the format
+ * supported by utilfdt_decode_type.
+ */
+
+#define USAGE_TYPE_MSG \
+ "<type>\ts=string, i=int, u=unsigned, x=hex\n" \
+ "\tOptional modifier prefix:\n" \
+ "\t\thh or b=byte, h=2 byte, l=4 byte (default)\n";
+
#endif /* _UTIL_H */