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Tom Rini83d290c2018-05-06 17:58:06 -04001/* SPDX-License-Identifier: GPL-2.0+ */
Simon Glass9785c902011-11-02 09:52:07 +00002/*
3 * (C) Copyright 2000-2009
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
Simon Glass9785c902011-11-02 09:52:07 +00005 */
6
7#ifndef __VSPRINTF_H
8#define __VSPRINTF_H
9
Maxime Ripardf272f1f2016-07-05 10:26:36 +020010#include <stdarg.h>
Masahiro Yamadaf7d6b892017-09-16 14:10:43 +090011#include <linux/types.h>
Maxime Ripardf272f1f2016-07-05 10:26:36 +020012
Simon Glass9785c902011-11-02 09:52:07 +000013ulong simple_strtoul(const char *cp, char **endp, unsigned int base);
Simon Glass71ec92b2011-11-02 09:52:09 +000014
15/**
16 * strict_strtoul - convert a string to an unsigned long strictly
17 * @param cp The string to be converted
18 * @param base The number base to use
19 * @param res The converted result value
20 * @return 0 if conversion is successful and *res is set to the converted
21 * value, otherwise it returns -EINVAL and *res is set to 0.
22 *
23 * strict_strtoul converts a string to an unsigned long only if the
24 * string is really an unsigned long string, any string containing
25 * any invalid char at the tail will be rejected and -EINVAL is returned,
26 * only a newline char at the tail is acceptible because people generally
27 * change a module parameter in the following way:
28 *
29 * echo 1024 > /sys/module/e1000/parameters/copybreak
30 *
31 * echo will append a newline to the tail.
32 *
33 * simple_strtoul just ignores the successive invalid characters and
34 * return the converted value of prefix part of the string.
35 *
36 * Copied this function from Linux 2.6.38 commit ID:
37 * 521cb40b0c44418a4fd36dc633f575813d59a43d
38 *
39 */
Simon Glass9785c902011-11-02 09:52:07 +000040int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
41unsigned long long simple_strtoull(const char *cp, char **endp,
42 unsigned int base);
43long simple_strtol(const char *cp, char **endp, unsigned int base);
Simon Glass66312372015-02-27 22:06:32 -070044
45/**
Simon Glassc4af6732015-06-23 15:39:08 -060046 * trailing_strtol() - extract a trailing integer from a string
47 *
48 * Given a string this finds a trailing number on the string and returns it.
49 * For example, "abc123" would return 123.
50 *
51 * @str: String to exxamine
52 * @return training number if found, else -1
53 */
54long trailing_strtol(const char *str);
55
56/**
57 * trailing_strtoln() - extract a trailing integer from a fixed-length string
58 *
59 * Given a fixed-length string this finds a trailing number on the string
60 * and returns it. For example, "abc123" would return 123. Only the
61 * characters between @str and @end - 1 are examined. If @end is NULL, it is
62 * set to str + strlen(str).
63 *
64 * @str: String to exxamine
65 * @end: Pointer to end of string to examine, or NULL to use the
66 * whole string
67 * @return training number if found, else -1
68 */
69long trailing_strtoln(const char *str, const char *end);
70
71/**
Simon Glass66312372015-02-27 22:06:32 -070072 * panic() - Print a message and reset/hang
73 *
74 * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
Vagrant Cascadian3450a852016-10-23 20:45:19 -070075 * defined, then it will hang instead of resetting.
Simon Glass66312372015-02-27 22:06:32 -070076 *
77 * @param fmt: printf() format string for message, which should not include
78 * \n, followed by arguments
79 */
Simon Glass9785c902011-11-02 09:52:07 +000080void panic(const char *fmt, ...)
81 __attribute__ ((format (__printf__, 1, 2), noreturn));
Simon Glass71ec92b2011-11-02 09:52:09 +000082
83/**
Simon Glass66312372015-02-27 22:06:32 -070084 * panic_str() - Print a message and reset/hang
85 *
86 * Prints a message on the console(s) and then resets. If CONFIG_PANIC_HANG is
Vagrant Cascadian3450a852016-10-23 20:45:19 -070087 * defined, then it will hang instead of resetting.
Simon Glass66312372015-02-27 22:06:32 -070088 *
89 * This function can be used instead of panic() when your board does not
90 * already use printf(), * to keep code size small.
91 *
92 * @param fmt: string to display, which should not include \n
93 */
94void panic_str(const char *str) __attribute__ ((noreturn));
95
96/**
Simon Glass71ec92b2011-11-02 09:52:09 +000097 * Format a string and place it in a buffer
98 *
99 * @param buf The buffer to place the result into
100 * @param fmt The format string to use
101 * @param ... Arguments for the format string
102 *
103 * The function returns the number of characters written
104 * into @buf.
105 *
106 * See the vsprintf() documentation for format string extensions over C99.
107 */
Simon Glass9785c902011-11-02 09:52:07 +0000108int sprintf(char *buf, const char *fmt, ...)
109 __attribute__ ((format (__printf__, 2, 3)));
Simon Glass71ec92b2011-11-02 09:52:09 +0000110
111/**
112 * Format a string and place it in a buffer (va_list version)
113 *
114 * @param buf The buffer to place the result into
Simon Glass71ec92b2011-11-02 09:52:09 +0000115 * @param fmt The format string to use
116 * @param args Arguments for the format string
117 * @return the number of characters which have been written into
Heinrich Schuchardtde2de312017-09-06 17:55:13 +0200118 * the @buf not including the trailing '\0'.
Simon Glass71ec92b2011-11-02 09:52:09 +0000119 *
120 * If you're not already dealing with a va_list consider using scnprintf().
121 *
122 * See the vsprintf() documentation for format string extensions over C99.
123 */
Simon Glass9785c902011-11-02 09:52:07 +0000124int vsprintf(char *buf, const char *fmt, va_list args);
125char *simple_itoa(ulong i);
126
Simon Glass71ec92b2011-11-02 09:52:09 +0000127/**
128 * Format a string and place it in a buffer
129 *
130 * @param buf The buffer to place the result into
131 * @param size The size of the buffer, including the trailing null space
132 * @param fmt The format string to use
133 * @param ... Arguments for the format string
134 * @return the number of characters which would be
135 * generated for the given input, excluding the trailing null,
136 * as per ISO C99. If the return is greater than or equal to
137 * @size, the resulting string is truncated.
138 *
139 * See the vsprintf() documentation for format string extensions over C99.
140 */
Sonny Rao046a37b2011-11-02 09:52:08 +0000141int snprintf(char *buf, size_t size, const char *fmt, ...)
142 __attribute__ ((format (__printf__, 3, 4)));
Simon Glass71ec92b2011-11-02 09:52:09 +0000143
144/**
145 * Format a string and place it in a buffer
146 *
147 * @param buf The buffer to place the result into
148 * @param size The size of the buffer, including the trailing null space
149 * @param fmt The format string to use
150 * @param ... Arguments for the format string
151 *
152 * The return value is the number of characters written into @buf not including
153 * the trailing '\0'. If @size is == 0 the function returns 0.
154 *
155 * See the vsprintf() documentation for format string extensions over C99.
156 */
Sonny Rao046a37b2011-11-02 09:52:08 +0000157int scnprintf(char *buf, size_t size, const char *fmt, ...)
158 __attribute__ ((format (__printf__, 3, 4)));
Simon Glass71ec92b2011-11-02 09:52:09 +0000159
160/**
161 * Format a string and place it in a buffer (base function)
162 *
163 * @param buf The buffer to place the result into
164 * @param size The size of the buffer, including the trailing null space
165 * @param fmt The format string to use
166 * @param args Arguments for the format string
167 * @return The number characters which would be generated for the given
168 * input, excluding the trailing '\0', as per ISO C99. Note that fewer
169 * characters may be written if this number of characters is >= size.
170 *
171 * This function follows C99 vsnprintf, but has some extensions:
172 * %pS output the name of a text symbol
173 * %pF output the name of a function pointer
174 * %pR output the address range in a struct resource
175 *
176 * The function returns the number of characters which would be
177 * generated for the given input, excluding the trailing '\0',
178 * as per ISO C99.
179 *
180 * Call this function if you are already dealing with a va_list.
181 * You probably want snprintf() instead.
182 */
Sonny Rao046a37b2011-11-02 09:52:08 +0000183int vsnprintf(char *buf, size_t size, const char *fmt, va_list args);
Simon Glass71ec92b2011-11-02 09:52:09 +0000184
185/**
186 * Format a string and place it in a buffer (va_list version)
187 *
188 * @param buf The buffer to place the result into
189 * @param size The size of the buffer, including the trailing null space
190 * @param fmt The format string to use
191 * @param args Arguments for the format string
192 * @return the number of characters which have been written into
193 * the @buf not including the trailing '\0'. If @size is == 0 the function
194 * returns 0.
195 *
196 * If you're not already dealing with a va_list consider using scnprintf().
197 *
198 * See the vsprintf() documentation for format string extensions over C99.
199 */
Sonny Rao046a37b2011-11-02 09:52:08 +0000200int vscnprintf(char *buf, size_t size, const char *fmt, va_list args);
Sonny Rao046a37b2011-11-02 09:52:08 +0000201
Simon Glassb8bcaa32013-06-11 11:14:38 -0700202/**
203 * print_grouped_ull() - print a value with digits grouped by ','
204 *
205 * This prints a value with grouped digits, like 12,345,678 to make it easier
206 * to read.
207 *
208 * @val: Value to print
209 * @digits: Number of digiits to print
210 */
211void print_grouped_ull(unsigned long long int_val, int digits);
212
Heiko Schocher09c32802015-04-27 07:42:05 +0200213bool str2off(const char *p, loff_t *num);
214bool str2long(const char *p, ulong *num);
Simon Glass2189d5f2019-11-14 12:57:20 -0700215
216/**
217 * strmhz() - Convert a value to a Hz string
218 *
219 * This creates a string indicating the number of MHz of a value. For example,
220 * 2700000 produces "2.7".
221 * @buf: Buffer to hold output string, which must be large enough
222 * @hz: Value to convert
223 */
224char *strmhz(char *buf, unsigned long hz);
Simon Glass9785c902011-11-02 09:52:07 +0000225#endif