GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/lib/vsprintf.c

@@ -0,0 +1,903 @@
+/*
+ *  linux/lib/vsprintf.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ */
+
+/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
+/*
+ * Wirzenius wrote this portably, Torvalds fucked it up :-)
+ *
+ * from hush: simple_itoa() was lifted from boa-0.93.15
+ */
+
+#include <common.h>
+#include <charset.h>
+#include <efi_loader.h>
+#include <div64.h>
+#include <hexdump.h>
+#include <stdarg.h>
+#include <vsprintf.h>
+#include <linux/ctype.h>
+#include <linux/err.h>
+#include <linux/types.h>
+#include <linux/string.h>
+
+#define noinline __attribute__((noinline))
+
+/* we use this so that we can do without the ctype library */
+#define is_digit(c)	((c) >= '0' && (c) <= '9')
+
+static int skip_atoi(const char **s)
+{
+	int i = 0;
+
+	while (is_digit(**s))
+		i = i * 10 + *((*s)++) - '0';
+
+	return i;
+}
+
+/* Decimal conversion is by far the most typical, and is used
+ * for /proc and /sys data. This directly impacts e.g. top performance
+ * with many processes running. We optimize it for speed
+ * using code from
+ * http://www.cs.uiowa.edu/~jones/bcd/decimal.html
+ * (with permission from the author, Douglas W. Jones). */
+
+/* Formats correctly any integer in [0,99999].
+ * Outputs from one to five digits depending on input.
+ * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */
+static char *put_dec_trunc(char *buf, unsigned q)
+{
+	unsigned d3, d2, d1, d0;
+	d1 = (q>>4) & 0xf;
+	d2 = (q>>8) & 0xf;
+	d3 = (q>>12);
+
+	d0 = 6*(d3 + d2 + d1) + (q & 0xf);
+	q = (d0 * 0xcd) >> 11;
+	d0 = d0 - 10*q;
+	*buf++ = d0 + '0'; /* least significant digit */
+	d1 = q + 9*d3 + 5*d2 + d1;
+	if (d1 != 0) {
+		q = (d1 * 0xcd) >> 11;
+		d1 = d1 - 10*q;
+		*buf++ = d1 + '0'; /* next digit */
+
+		d2 = q + 2*d2;
+		if ((d2 != 0) || (d3 != 0)) {
+			q = (d2 * 0xd) >> 7;
+			d2 = d2 - 10*q;
+			*buf++ = d2 + '0'; /* next digit */
+
+			d3 = q + 4*d3;
+			if (d3 != 0) {
+				q = (d3 * 0xcd) >> 11;
+				d3 = d3 - 10*q;
+				*buf++ = d3 + '0';  /* next digit */
+				if (q != 0)
+					*buf++ = q + '0'; /* most sign. digit */
+			}
+		}
+	}
+	return buf;
+}
+/* Same with if's removed. Always emits five digits */
+static char *put_dec_full(char *buf, unsigned q)
+{
+	/* BTW, if q is in [0,9999], 8-bit ints will be enough, */
+	/* but anyway, gcc produces better code with full-sized ints */
+	unsigned d3, d2, d1, d0;
+	d1 = (q>>4) & 0xf;
+	d2 = (q>>8) & 0xf;
+	d3 = (q>>12);
+
+	/*
+	 * Possible ways to approx. divide by 10
+	 * gcc -O2 replaces multiply with shifts and adds
+	 * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386)
+	 * (x * 0x67) >> 10:  1100111
+	 * (x * 0x34) >> 9:    110100 - same
+	 * (x * 0x1a) >> 8:     11010 - same
+	 * (x * 0x0d) >> 7:      1101 - same, shortest code (on i386)
+	 */
+
+	d0 = 6*(d3 + d2 + d1) + (q & 0xf);
+	q = (d0 * 0xcd) >> 11;
+	d0 = d0 - 10*q;
+	*buf++ = d0 + '0';
+	d1 = q + 9*d3 + 5*d2 + d1;
+		q = (d1 * 0xcd) >> 11;
+		d1 = d1 - 10*q;
+		*buf++ = d1 + '0';
+
+		d2 = q + 2*d2;
+			q = (d2 * 0xd) >> 7;
+			d2 = d2 - 10*q;
+			*buf++ = d2 + '0';
+
+			d3 = q + 4*d3;
+				q = (d3 * 0xcd) >> 11; /* - shorter code */
+				/* q = (d3 * 0x67) >> 10; - would also work */
+				d3 = d3 - 10*q;
+				*buf++ = d3 + '0';
+					*buf++ = q + '0';
+	return buf;
+}
+/* No inlining helps gcc to use registers better */
+static noinline char *put_dec(char *buf, uint64_t num)
+{
+	while (1) {
+		unsigned rem;
+		if (num < 100000)
+			return put_dec_trunc(buf, num);
+		rem = do_div(num, 100000);
+		buf = put_dec_full(buf, rem);
+	}
+}
+
+#define ZEROPAD	1		/* pad with zero */
+#define SIGN	2		/* unsigned/signed long */
+#define PLUS	4		/* show plus */
+#define SPACE	8		/* space if plus */
+#define LEFT	16		/* left justified */
+#define SMALL	32		/* Must be 32 == 0x20 */
+#define SPECIAL	64		/* 0x */
+
+/*
+ * Macro to add a new character to our output string, but only if it will
+ * fit. The macro moves to the next character position in the output string.
+ */
+#define ADDCH(str, ch) do { \
+	if ((str) < end) \
+		*(str) = (ch); \
+	++str; \
+	} while (0)
+
+static char *number(char *buf, char *end, u64 num,
+		int base, int size, int precision, int type)
+{
+	/* we are called with base 8, 10 or 16, only, thus don't need "G..."  */
+	static const char digits[16] = "0123456789ABCDEF";
+
+	char tmp[66];
+	char sign;
+	char locase;
+	int need_pfx = ((type & SPECIAL) && base != 10);
+	int i;
+
+	/* locase = 0 or 0x20. ORing digits or letters with 'locase'
+	 * produces same digits or (maybe lowercased) letters */
+	locase = (type & SMALL);
+	if (type & LEFT)
+		type &= ~ZEROPAD;
+	sign = 0;
+	if (type & SIGN) {
+		if ((s64) num < 0) {
+			sign = '-';
+			num = -(s64) num;
+			size--;
+		} else if (type & PLUS) {
+			sign = '+';
+			size--;
+		} else if (type & SPACE) {
+			sign = ' ';
+			size--;
+		}
+	}
+	if (need_pfx) {
+		size--;
+		if (base == 16)
+			size--;
+	}
+
+	/* generate full string in tmp[], in reverse order */
+	i = 0;
+	if (num == 0)
+		tmp[i++] = '0';
+	/* Generic code, for any base:
+	else do {
+		tmp[i++] = (digits[do_div(num,base)] | locase);
+	} while (num != 0);
+	*/
+	else if (base != 10) { /* 8 or 16 */
+		int mask = base - 1;
+		int shift = 3;
+
+		if (base == 16)
+			shift = 4;
+
+		do {
+			tmp[i++] = (digits[((unsigned char)num) & mask]
+					| locase);
+			num >>= shift;
+		} while (num);
+	} else { /* base 10 */
+		i = put_dec(tmp, num) - tmp;
+	}
+
+	/* printing 100 using %2d gives "100", not "00" */
+	if (i > precision)
+		precision = i;
+	/* leading space padding */
+	size -= precision;
+	if (!(type & (ZEROPAD + LEFT))) {
+		while (--size >= 0)
+			ADDCH(buf, ' ');
+	}
+	/* sign */
+	if (sign)
+		ADDCH(buf, sign);
+	/* "0x" / "0" prefix */
+	if (need_pfx) {
+		ADDCH(buf, '0');
+		if (base == 16)
+			ADDCH(buf, 'X' | locase);
+	}
+	/* zero or space padding */
+	if (!(type & LEFT)) {
+		char c = (type & ZEROPAD) ? '0' : ' ';
+
+		while (--size >= 0)
+			ADDCH(buf, c);
+	}
+	/* hmm even more zero padding? */
+	while (i <= --precision)
+		ADDCH(buf, '0');
+	/* actual digits of result */
+	while (--i >= 0)
+		ADDCH(buf, tmp[i]);
+	/* trailing space padding */
+	while (--size >= 0)
+		ADDCH(buf, ' ');
+	return buf;
+}
+
+static char *string(char *buf, char *end, char *s, int field_width,
+		int precision, int flags)
+{
+	int len, i;
+
+	if (s == NULL)
+		s = "<NULL>";
+
+	len = strnlen(s, precision);
+
+	if (!(flags & LEFT))
+		while (len < field_width--)
+			ADDCH(buf, ' ');
+	for (i = 0; i < len; ++i)
+		ADDCH(buf, *s++);
+	while (len < field_width--)
+		ADDCH(buf, ' ');
+	return buf;
+}
+
+/* U-Boot uses UTF-16 strings in the EFI context only. */
+#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
+static char *string16(char *buf, char *end, u16 *s, int field_width,
+		int precision, int flags)
+{
+	const u16 *str = s ? s : L"<NULL>";
+	ssize_t i, len = utf16_strnlen(str, precision);
+
+	if (!(flags & LEFT))
+		for (; len < field_width; --field_width)
+			ADDCH(buf, ' ');
+	for (i = 0; i < len && buf + utf16_utf8_strnlen(str, 1) <= end; ++i) {
+		s32 s = utf16_get(&str);
+
+		if (s < 0)
+			s = '?';
+		utf8_put(s, &buf);
+	}
+	for (; len < field_width; --field_width)
+		ADDCH(buf, ' ');
+	return buf;
+}
+
+#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT)
+static char *device_path_string(char *buf, char *end, void *dp, int field_width,
+				int precision, int flags)
+{
+	u16 *str;
+
+	/* If dp == NULL output the string '<NULL>' */
+	if (!dp)
+		return string16(buf, end, dp, field_width, precision, flags);
+
+	str = efi_dp_str((struct efi_device_path *)dp);
+	if (!str)
+		return ERR_PTR(-ENOMEM);
+
+	buf = string16(buf, end, str, field_width, precision, flags);
+	efi_free_pool(str);
+	return buf;
+}
+#endif
+#endif
+
+static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width,
+				int precision, int flags)
+{
+	/* (6 * 2 hex digits), 5 colons and trailing zero */
+	char mac_addr[6 * 3];
+	char *p = mac_addr;
+	int i;
+
+	for (i = 0; i < 6; i++) {
+		p = hex_byte_pack(p, addr[i]);
+		if (!(flags & SPECIAL) && i != 5)
+			*p++ = ':';
+	}
+	*p = '\0';
+
+	return string(buf, end, mac_addr, field_width, precision,
+		      flags & ~SPECIAL);
+}
+
+static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width,
+			 int precision, int flags)
+{
+	/* (8 * 4 hex digits), 7 colons and trailing zero */
+	char ip6_addr[8 * 5];
+	char *p = ip6_addr;
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		p = hex_byte_pack(p, addr[2 * i]);
+		p = hex_byte_pack(p, addr[2 * i + 1]);
+		if (!(flags & SPECIAL) && i != 7)
+			*p++ = ':';
+	}
+	*p = '\0';
+
+	return string(buf, end, ip6_addr, field_width, precision,
+		      flags & ~SPECIAL);
+}
+
+static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width,
+			 int precision, int flags)
+{
+	/* (4 * 3 decimal digits), 3 dots and trailing zero */
+	char ip4_addr[4 * 4];
+	char temp[3];	/* hold each IP quad in reverse order */
+	char *p = ip4_addr;
+	int i, digits;
+
+	for (i = 0; i < 4; i++) {
+		digits = put_dec_trunc(temp, addr[i]) - temp;
+		/* reverse the digits in the quad */
+		while (digits--)
+			*p++ = temp[digits];
+		if (i != 3)
+			*p++ = '.';
+	}
+	*p = '\0';
+
+	return string(buf, end, ip4_addr, field_width, precision,
+		      flags & ~SPECIAL);
+}
+
+#ifdef CONFIG_LIB_UUID
+/*
+ * This works (roughly) the same way as Linux's.
+ *
+ *   %pUb:   01020304-0506-0708-090a-0b0c0d0e0f10
+ *   %pUB:   01020304-0506-0708-090A-0B0C0D0E0F10
+ *   %pUl:   04030201-0605-0807-090a-0b0c0d0e0f10
+ *   %pUL:   04030201-0605-0807-090A-0B0C0D0E0F10
+ */
+static char *uuid_string(char *buf, char *end, u8 *addr, int field_width,
+			 int precision, int flags, const char *fmt)
+{
+	char uuid[UUID_STR_LEN + 1];
+	int str_format;
+
+	switch (*(++fmt)) {
+	case 'L':
+		str_format = UUID_STR_FORMAT_GUID | UUID_STR_UPPER_CASE;
+		break;
+	case 'l':
+		str_format = UUID_STR_FORMAT_GUID;
+		break;
+	case 'B':
+		str_format = UUID_STR_FORMAT_STD | UUID_STR_UPPER_CASE;
+		break;
+	default:
+		str_format = UUID_STR_FORMAT_STD;
+		break;
+	}
+
+	if (addr)
+		uuid_bin_to_str(addr, uuid, str_format);
+	else
+		strcpy(uuid, "<NULL>");
+
+	return string(buf, end, uuid, field_width, precision, flags);
+}
+#endif
+
+/*
+ * Show a '%p' thing.  A kernel extension is that the '%p' is followed
+ * by an extra set of alphanumeric characters that are extended format
+ * specifiers.
+ *
+ * Right now we handle:
+ *
+ * - 'M' For a 6-byte MAC address, it prints the address in the
+ *       usual colon-separated hex notation
+ * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
+ *       decimal for v4 and colon separated network-order 16 bit hex for v6)
+ * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
+ *       currently the same
+ *
+ * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
+ * function pointers are really function descriptors, which contain a
+ * pointer to the real address.
+ */
+static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
+		int field_width, int precision, int flags)
+{
+	u64 num = (uintptr_t)ptr;
+
+	/*
+	 * Being a boot loader, we explicitly allow pointers to
+	 * (physical) address null.
+	 */
+#if 0
+	if (!ptr)
+		return string(buf, end, "(null)", field_width, precision,
+			      flags);
+#endif
+
+	switch (*fmt) {
+/* Device paths only exist in the EFI context. */
+#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT) && !defined(API_BUILD)
+	case 'D':
+		return device_path_string(buf, end, ptr, field_width,
+					  precision, flags);
+#endif
+	case 'a':
+		flags |= SPECIAL | ZEROPAD;
+
+		switch (fmt[1]) {
+		case 'p':
+		default:
+			field_width = sizeof(phys_addr_t) * 2 + 2;
+			num = *(phys_addr_t *)ptr;
+			break;
+		}
+		break;
+	case 'm':
+		flags |= SPECIAL;
+		/* Fallthrough */
+	case 'M':
+		return mac_address_string(buf, end, ptr, field_width,
+					  precision, flags);
+	case 'i':
+		flags |= SPECIAL;
+		/* Fallthrough */
+	case 'I':
+		if (fmt[1] == '6')
+			return ip6_addr_string(buf, end, ptr, field_width,
+					       precision, flags);
+		if (fmt[1] == '4')
+			return ip4_addr_string(buf, end, ptr, field_width,
+					       precision, flags);
+		flags &= ~SPECIAL;
+		break;
+#ifdef CONFIG_LIB_UUID
+	case 'U':
+		return uuid_string(buf, end, ptr, field_width, precision,
+				   flags, fmt);
+#endif
+	default:
+		break;
+	}
+	flags |= SMALL;
+	if (field_width == -1) {
+		field_width = 2*sizeof(void *);
+		flags |= ZEROPAD;
+	}
+	return number(buf, end, num, 16, field_width, precision, flags);
+}
+
+static int vsnprintf_internal(char *buf, size_t size, const char *fmt,
+			      va_list args)
+{
+	u64 num;
+	int base;
+	char *str;
+
+	int flags;		/* flags to number() */
+
+	int field_width;	/* width of output field */
+	int precision;		/* min. # of digits for integers; max
+				   number of chars for from string */
+	int qualifier;		/* 'h', 'l', or 'L' for integer fields */
+				/* 'z' support added 23/7/1999 S.H.    */
+				/* 'z' changed to 'Z' --davidm 1/25/99 */
+				/* 't' added for ptrdiff_t */
+	char *end = buf + size;
+
+	/* Make sure end is always >= buf - do we want this in U-Boot? */
+	if (end < buf) {
+		end = ((void *)-1);
+		size = end - buf;
+	}
+	str = buf;
+
+	for (; *fmt ; ++fmt) {
+		if (*fmt != '%') {
+			ADDCH(str, *fmt);
+			continue;
+		}
+
+		/* process flags */
+		flags = 0;
+repeat:
+			++fmt;		/* this also skips first '%' */
+			switch (*fmt) {
+			case '-':
+				flags |= LEFT;
+				goto repeat;
+			case '+':
+				flags |= PLUS;
+				goto repeat;
+			case ' ':
+				flags |= SPACE;
+				goto repeat;
+			case '#':
+				flags |= SPECIAL;
+				goto repeat;
+			case '0':
+				flags |= ZEROPAD;
+				goto repeat;
+			}
+
+		/* get field width */
+		field_width = -1;
+		if (is_digit(*fmt))
+			field_width = skip_atoi(&fmt);
+		else if (*fmt == '*') {
+			++fmt;
+			/* it's the next argument */
+			field_width = va_arg(args, int);
+			if (field_width < 0) {
+				field_width = -field_width;
+				flags |= LEFT;
+			}
+		}
+
+		/* get the precision */
+		precision = -1;
+		if (*fmt == '.') {
+			++fmt;
+			if (is_digit(*fmt))
+				precision = skip_atoi(&fmt);
+			else if (*fmt == '*') {
+				++fmt;
+				/* it's the next argument */
+				precision = va_arg(args, int);
+			}
+			if (precision < 0)
+				precision = 0;
+		}
+
+		/* get the conversion qualifier */
+		qualifier = -1;
+		if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
+		    *fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
+			qualifier = *fmt;
+			++fmt;
+			if (qualifier == 'l' && *fmt == 'l') {
+				qualifier = 'L';
+				++fmt;
+			}
+		}
+
+		/* default base */
+		base = 10;
+
+		switch (*fmt) {
+		case 'c':
+			if (!(flags & LEFT)) {
+				while (--field_width > 0)
+					ADDCH(str, ' ');
+			}
+			ADDCH(str, (unsigned char) va_arg(args, int));
+			while (--field_width > 0)
+				ADDCH(str, ' ');
+			continue;
+
+		case 's':
+/* U-Boot uses UTF-16 strings in the EFI context only. */
+#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
+			if (qualifier == 'l') {
+				str = string16(str, end, va_arg(args, u16 *),
+					       field_width, precision, flags);
+			} else
+#endif
+			{
+				str = string(str, end, va_arg(args, char *),
+					     field_width, precision, flags);
+			}
+			continue;
+
+		case 'p':
+			str = pointer(fmt + 1, str, end,
+					va_arg(args, void *),
+					field_width, precision, flags);
+			if (IS_ERR(str))
+				return PTR_ERR(str);
+			/* Skip all alphanumeric pointer suffixes */
+			while (isalnum(fmt[1]))
+				fmt++;
+			continue;
+
+		case 'n':
+			if (qualifier == 'l') {
+				long *ip = va_arg(args, long *);
+				*ip = (str - buf);
+			} else {
+				int *ip = va_arg(args, int *);
+				*ip = (str - buf);
+			}
+			continue;
+
+		case '%':
+			ADDCH(str, '%');
+			continue;
+
+		/* integer number formats - set up the flags and "break" */
+		case 'o':
+			base = 8;
+			break;
+
+		case 'x':
+			flags |= SMALL;
+		case 'X':
+			base = 16;
+			break;
+
+		case 'd':
+		case 'i':
+			flags |= SIGN;
+		case 'u':
+			break;
+
+		default:
+			ADDCH(str, '%');
+			if (*fmt)
+				ADDCH(str, *fmt);
+			else
+				--fmt;
+			continue;
+		}
+		if (qualifier == 'L')  /* "quad" for 64 bit variables */
+			num = va_arg(args, unsigned long long);
+		else if (qualifier == 'l') {
+			num = va_arg(args, unsigned long);
+			if (flags & SIGN)
+				num = (signed long) num;
+		} else if (qualifier == 'Z' || qualifier == 'z') {
+			num = va_arg(args, size_t);
+		} else if (qualifier == 't') {
+			num = va_arg(args, ptrdiff_t);
+		} else if (qualifier == 'h') {
+			num = (unsigned short) va_arg(args, int);
+			if (flags & SIGN)
+				num = (signed short) num;
+		} else {
+			num = va_arg(args, unsigned int);
+			if (flags & SIGN)
+				num = (signed int) num;
+		}
+		str = number(str, end, num, base, field_width, precision,
+			     flags);
+	}
+
+	if (size > 0) {
+		ADDCH(str, '\0');
+		if (str > end)
+			end[-1] = '\0';
+		--str;
+	}
+	/* the trailing null byte doesn't count towards the total */
+	return str - buf;
+}
+
+int vsnprintf(char *buf, size_t size, const char *fmt,
+			      va_list args)
+{
+	return vsnprintf_internal(buf, size, fmt, args);
+}
+
+int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
+{
+	int i;
+
+	i = vsnprintf(buf, size, fmt, args);
+
+	if (likely(i < size))
+		return i;
+	if (size != 0)
+		return size - 1;
+	return 0;
+}
+
+int snprintf(char *buf, size_t size, const char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	i = vsnprintf(buf, size, fmt, args);
+	va_end(args);
+
+	return i;
+}
+
+int scnprintf(char *buf, size_t size, const char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	i = vscnprintf(buf, size, fmt, args);
+	va_end(args);
+
+	return i;
+}
+
+/**
+ * Format a string and place it in a buffer (va_list version)
+ *
+ * @param buf	The buffer to place the result into
+ * @param fmt	The format string to use
+ * @param args	Arguments for the format string
+ *
+ * The function returns the number of characters written
+ * into @buf. Use vsnprintf() or vscnprintf() in order to avoid
+ * buffer overflows.
+ *
+ * If you're not already dealing with a va_list consider using sprintf().
+ */
+int vsprintf(char *buf, const char *fmt, va_list args)
+{
+	return vsnprintf_internal(buf, INT_MAX, fmt, args);
+}
+
+int sprintf(char *buf, const char *fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args, fmt);
+	i = vsprintf(buf, fmt, args);
+	va_end(args);
+	return i;
+}
+
+#if CONFIG_IS_ENABLED(PRINTF)
+int printf(const char *fmt, ...)
+{
+	va_list args;
+	uint i;
+	char printbuffer[CONFIG_SYS_PBSIZE];
+
+	va_start(args, fmt);
+
+	/*
+	 * For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
+	va_end(args);
+
+	/* Handle error */
+	if (i <= 0)
+		return i;
+	/* Print the string */
+	puts(printbuffer);
+	return i;
+}
+
+int vprintf(const char *fmt, va_list args)
+{
+	uint i;
+	char printbuffer[CONFIG_SYS_PBSIZE];
+
+	/*
+	 * For this to work, printbuffer must be larger than
+	 * anything we ever want to print.
+	 */
+	i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
+
+	/* Handle error */
+	if (i <= 0)
+		return i;
+	/* Print the string */
+	puts(printbuffer);
+	return i;
+}
+#endif
+
+char *simple_itoa(ulong i)
+{
+	/* 21 digits plus null terminator, good for 64-bit or smaller ints */
+	static char local[22];
+	char *p = &local[21];
+
+	*p-- = '\0';
+	do {
+		*p-- = '0' + i % 10;
+		i /= 10;
+	} while (i > 0);
+	return p + 1;
+}
+
+/* We don't seem to have %'d in U-Boot */
+void print_grouped_ull(unsigned long long int_val, int digits)
+{
+	char str[21], *s;
+	int grab = 3;
+
+	digits = (digits + 2) / 3;
+	sprintf(str, "%*llu", digits * 3, int_val);
+	for (s = str; *s; s += grab) {
+		if (s != str)
+			putc(s[-1] != ' ' ? ',' : ' ');
+		printf("%.*s", grab, s);
+		grab = 3;
+	}
+}
+
+bool str2off(const char *p, loff_t *num)
+{
+	char *endptr;
+
+	*num = simple_strtoull(p, &endptr, 16);
+	return *p != '\0' && *endptr == '\0';
+}
+
+bool str2long(const char *p, ulong *num)
+{
+	char *endptr;
+
+	*num = simple_strtoul(p, &endptr, 16);
+	return *p != '\0' && *endptr == '\0';
+}
+
+char *strmhz(char *buf, unsigned long hz)
+{
+	long l, n;
+	long m;
+
+	n = DIV_ROUND_CLOSEST(hz, 1000) / 1000L;
+	l = sprintf(buf, "%ld", n);
+
+	hz -= n * 1000000L;
+	m = DIV_ROUND_CLOSEST(hz, 1000L);
+	if (m != 0)
+		sprintf(buf + l, ".%03ld", m);
+
+	return buf;
+}
+
+char *ultohstr(unsigned long long size)
+{
+	int ix;
+	static char buffer[20];
+	char *fmt[] = {
+		"%u", "%uK", "%uM", "%uG", "%uT", "%uT"};
+	for (ix = 0; (ix < 5) && !(size & 0x3FF) && size; ix++) {
+		size = (size >> 10);
+	}
+	sprintf(buffer, fmt[ix], size);
+	return buffer;
+}