638 lines
12 KiB
C
638 lines
12 KiB
C
/*
|
|
* Copyright (C) Paul Mackerras 1997.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
#include <stdarg.h>
|
|
#include <linux/types.h>
|
|
#include <linux/string.h>
|
|
#include <linux/ctype.h>
|
|
|
|
int (*prom)(void *);
|
|
|
|
void *chosen_handle;
|
|
void *stdin;
|
|
void *stdout;
|
|
void *stderr;
|
|
|
|
void exit(void);
|
|
void *finddevice(const char *name);
|
|
int getprop(void *phandle, const char *name, void *buf, int buflen);
|
|
void chrpboot(int a1, int a2, void *prom); /* in main.c */
|
|
|
|
void printk(char *fmt, ...);
|
|
|
|
/* there is no convenient header to get this from... -- paulus */
|
|
extern unsigned long strlen(const char *);
|
|
|
|
int
|
|
write(void *handle, void *ptr, int nb)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
int nargs;
|
|
int nret;
|
|
void *ihandle;
|
|
void *addr;
|
|
int len;
|
|
int actual;
|
|
} args;
|
|
|
|
args.service = "write";
|
|
args.nargs = 3;
|
|
args.nret = 1;
|
|
args.ihandle = handle;
|
|
args.addr = ptr;
|
|
args.len = nb;
|
|
args.actual = -1;
|
|
(*prom)(&args);
|
|
return args.actual;
|
|
}
|
|
|
|
int
|
|
read(void *handle, void *ptr, int nb)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
int nargs;
|
|
int nret;
|
|
void *ihandle;
|
|
void *addr;
|
|
int len;
|
|
int actual;
|
|
} args;
|
|
|
|
args.service = "read";
|
|
args.nargs = 3;
|
|
args.nret = 1;
|
|
args.ihandle = handle;
|
|
args.addr = ptr;
|
|
args.len = nb;
|
|
args.actual = -1;
|
|
(*prom)(&args);
|
|
return args.actual;
|
|
}
|
|
|
|
void
|
|
exit()
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
} args;
|
|
|
|
for (;;) {
|
|
args.service = "exit";
|
|
(*prom)(&args);
|
|
}
|
|
}
|
|
|
|
void
|
|
pause(void)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
} args;
|
|
|
|
args.service = "enter";
|
|
(*prom)(&args);
|
|
}
|
|
|
|
void *
|
|
finddevice(const char *name)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
int nargs;
|
|
int nret;
|
|
const char *devspec;
|
|
void *phandle;
|
|
} args;
|
|
|
|
args.service = "finddevice";
|
|
args.nargs = 1;
|
|
args.nret = 1;
|
|
args.devspec = name;
|
|
args.phandle = (void *) -1;
|
|
(*prom)(&args);
|
|
return args.phandle;
|
|
}
|
|
|
|
void *
|
|
claim(unsigned long virt, unsigned long size, unsigned long align)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
int nargs;
|
|
int nret;
|
|
unsigned int virt;
|
|
unsigned int size;
|
|
unsigned int align;
|
|
void *ret;
|
|
} args;
|
|
|
|
args.service = "claim";
|
|
args.nargs = 3;
|
|
args.nret = 1;
|
|
args.virt = virt;
|
|
args.size = size;
|
|
args.align = align;
|
|
(*prom)(&args);
|
|
return args.ret;
|
|
}
|
|
|
|
int
|
|
getprop(void *phandle, const char *name, void *buf, int buflen)
|
|
{
|
|
struct prom_args {
|
|
char *service;
|
|
int nargs;
|
|
int nret;
|
|
void *phandle;
|
|
const char *name;
|
|
void *buf;
|
|
int buflen;
|
|
int size;
|
|
} args;
|
|
|
|
args.service = "getprop";
|
|
args.nargs = 4;
|
|
args.nret = 1;
|
|
args.phandle = phandle;
|
|
args.name = name;
|
|
args.buf = buf;
|
|
args.buflen = buflen;
|
|
args.size = -1;
|
|
(*prom)(&args);
|
|
return args.size;
|
|
}
|
|
|
|
int
|
|
putc(int c, void *f)
|
|
{
|
|
char ch = c;
|
|
|
|
if (c == '\n')
|
|
putc('\r', f);
|
|
return write(f, &ch, 1) == 1? c: -1;
|
|
}
|
|
|
|
int
|
|
putchar(int c)
|
|
{
|
|
return putc(c, stdout);
|
|
}
|
|
|
|
int
|
|
fputs(char *str, void *f)
|
|
{
|
|
int n = strlen(str);
|
|
|
|
return write(f, str, n) == n? 0: -1;
|
|
}
|
|
|
|
int
|
|
readchar(void)
|
|
{
|
|
char ch;
|
|
|
|
for (;;) {
|
|
switch (read(stdin, &ch, 1)) {
|
|
case 1:
|
|
return ch;
|
|
case -1:
|
|
printk("read(stdin) returned -1\r\n");
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
static char line[256];
|
|
static char *lineptr;
|
|
static int lineleft;
|
|
|
|
int
|
|
getchar(void)
|
|
{
|
|
int c;
|
|
|
|
if (lineleft == 0) {
|
|
lineptr = line;
|
|
for (;;) {
|
|
c = readchar();
|
|
if (c == -1 || c == 4)
|
|
break;
|
|
if (c == '\r' || c == '\n') {
|
|
*lineptr++ = '\n';
|
|
putchar('\n');
|
|
break;
|
|
}
|
|
switch (c) {
|
|
case 0177:
|
|
case '\b':
|
|
if (lineptr > line) {
|
|
putchar('\b');
|
|
putchar(' ');
|
|
putchar('\b');
|
|
--lineptr;
|
|
}
|
|
break;
|
|
case 'U' & 0x1F:
|
|
while (lineptr > line) {
|
|
putchar('\b');
|
|
putchar(' ');
|
|
putchar('\b');
|
|
--lineptr;
|
|
}
|
|
break;
|
|
default:
|
|
if (lineptr >= &line[sizeof(line) - 1])
|
|
putchar('\a');
|
|
else {
|
|
putchar(c);
|
|
*lineptr++ = c;
|
|
}
|
|
}
|
|
}
|
|
lineleft = lineptr - line;
|
|
lineptr = line;
|
|
}
|
|
if (lineleft == 0)
|
|
return -1;
|
|
--lineleft;
|
|
return *lineptr++;
|
|
}
|
|
|
|
|
|
|
|
/* String functions lifted from lib/vsprintf.c and lib/ctype.c */
|
|
unsigned char _ctype[] = {
|
|
_C,_C,_C,_C,_C,_C,_C,_C, /* 0-7 */
|
|
_C,_C|_S,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C, /* 8-15 */
|
|
_C,_C,_C,_C,_C,_C,_C,_C, /* 16-23 */
|
|
_C,_C,_C,_C,_C,_C,_C,_C, /* 24-31 */
|
|
_S|_SP,_P,_P,_P,_P,_P,_P,_P, /* 32-39 */
|
|
_P,_P,_P,_P,_P,_P,_P,_P, /* 40-47 */
|
|
_D,_D,_D,_D,_D,_D,_D,_D, /* 48-55 */
|
|
_D,_D,_P,_P,_P,_P,_P,_P, /* 56-63 */
|
|
_P,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U, /* 64-71 */
|
|
_U,_U,_U,_U,_U,_U,_U,_U, /* 72-79 */
|
|
_U,_U,_U,_U,_U,_U,_U,_U, /* 80-87 */
|
|
_U,_U,_U,_P,_P,_P,_P,_P, /* 88-95 */
|
|
_P,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L, /* 96-103 */
|
|
_L,_L,_L,_L,_L,_L,_L,_L, /* 104-111 */
|
|
_L,_L,_L,_L,_L,_L,_L,_L, /* 112-119 */
|
|
_L,_L,_L,_P,_P,_P,_P,_C, /* 120-127 */
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 128-143 */
|
|
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-159 */
|
|
_S|_SP,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 160-175 */
|
|
_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 176-191 */
|
|
_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U, /* 192-207 */
|
|
_U,_U,_U,_U,_U,_U,_U,_P,_U,_U,_U,_U,_U,_U,_U,_L, /* 208-223 */
|
|
_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L, /* 224-239 */
|
|
_L,_L,_L,_L,_L,_L,_L,_P,_L,_L,_L,_L,_L,_L,_L,_L}; /* 240-255 */
|
|
|
|
size_t strnlen(const char * s, size_t count)
|
|
{
|
|
const char *sc;
|
|
|
|
for (sc = s; count-- && *sc != '\0'; ++sc)
|
|
/* nothing */;
|
|
return sc - s;
|
|
}
|
|
|
|
unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
|
|
{
|
|
unsigned long result = 0,value;
|
|
|
|
if (!base) {
|
|
base = 10;
|
|
if (*cp == '0') {
|
|
base = 8;
|
|
cp++;
|
|
if ((*cp == 'x') && isxdigit(cp[1])) {
|
|
cp++;
|
|
base = 16;
|
|
}
|
|
}
|
|
}
|
|
while (isxdigit(*cp) &&
|
|
(value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) {
|
|
result = result*base + value;
|
|
cp++;
|
|
}
|
|
if (endp)
|
|
*endp = (char *)cp;
|
|
return result;
|
|
}
|
|
|
|
long simple_strtol(const char *cp,char **endp,unsigned int base)
|
|
{
|
|
if(*cp=='-')
|
|
return -simple_strtoul(cp+1,endp,base);
|
|
return simple_strtoul(cp,endp,base);
|
|
}
|
|
|
|
static int skip_atoi(const char **s)
|
|
{
|
|
int i=0;
|
|
|
|
while (isdigit(**s))
|
|
i = i*10 + *((*s)++) - '0';
|
|
return i;
|
|
}
|
|
|
|
#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 SPECIAL 32 /* 0x */
|
|
#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
|
|
|
|
static char * number(char * str, long num, int base, int size, int precision, int type)
|
|
{
|
|
char c,sign,tmp[66];
|
|
const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
|
|
int i;
|
|
|
|
if (type & LARGE)
|
|
digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
|
|
if (type & LEFT)
|
|
type &= ~ZEROPAD;
|
|
if (base < 2 || base > 36)
|
|
return 0;
|
|
c = (type & ZEROPAD) ? '0' : ' ';
|
|
sign = 0;
|
|
if (type & SIGN) {
|
|
if (num < 0) {
|
|
sign = '-';
|
|
num = -num;
|
|
size--;
|
|
} else if (type & PLUS) {
|
|
sign = '+';
|
|
size--;
|
|
} else if (type & SPACE) {
|
|
sign = ' ';
|
|
size--;
|
|
}
|
|
}
|
|
if (type & SPECIAL) {
|
|
if (base == 16)
|
|
size -= 2;
|
|
else if (base == 8)
|
|
size--;
|
|
}
|
|
i = 0;
|
|
if (num == 0)
|
|
tmp[i++]='0';
|
|
else while (num != 0) {
|
|
tmp[i++] = digits[num % base];
|
|
num /= base;
|
|
}
|
|
if (i > precision)
|
|
precision = i;
|
|
size -= precision;
|
|
if (!(type&(ZEROPAD+LEFT)))
|
|
while(size-->0)
|
|
*str++ = ' ';
|
|
if (sign)
|
|
*str++ = sign;
|
|
if (type & SPECIAL) {
|
|
if (base==8)
|
|
*str++ = '0';
|
|
else if (base==16) {
|
|
*str++ = '0';
|
|
*str++ = digits[33];
|
|
}
|
|
}
|
|
if (!(type & LEFT))
|
|
while (size-- > 0)
|
|
*str++ = c;
|
|
while (i < precision--)
|
|
*str++ = '0';
|
|
while (i-- > 0)
|
|
*str++ = tmp[i];
|
|
while (size-- > 0)
|
|
*str++ = ' ';
|
|
return str;
|
|
}
|
|
|
|
/* Forward decl. needed for IP address printing stuff... */
|
|
int sprintf(char * buf, const char *fmt, ...);
|
|
|
|
int vsprintf(char *buf, const char *fmt, va_list args)
|
|
{
|
|
int len;
|
|
unsigned long num;
|
|
int i, base;
|
|
char * str;
|
|
const char *s;
|
|
|
|
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 */
|
|
|
|
|
|
for (str=buf ; *fmt ; ++fmt) {
|
|
if (*fmt != '%') {
|
|
*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 (isdigit(*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 (isdigit(*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') {
|
|
qualifier = *fmt;
|
|
++fmt;
|
|
}
|
|
|
|
/* default base */
|
|
base = 10;
|
|
|
|
switch (*fmt) {
|
|
case 'c':
|
|
if (!(flags & LEFT))
|
|
while (--field_width > 0)
|
|
*str++ = ' ';
|
|
*str++ = (unsigned char) va_arg(args, int);
|
|
while (--field_width > 0)
|
|
*str++ = ' ';
|
|
continue;
|
|
|
|
case 's':
|
|
s = va_arg(args, char *);
|
|
if (!s)
|
|
s = "<NULL>";
|
|
|
|
len = strnlen(s, precision);
|
|
|
|
if (!(flags & LEFT))
|
|
while (len < field_width--)
|
|
*str++ = ' ';
|
|
for (i = 0; i < len; ++i)
|
|
*str++ = *s++;
|
|
while (len < field_width--)
|
|
*str++ = ' ';
|
|
continue;
|
|
|
|
case 'p':
|
|
if (field_width == -1) {
|
|
field_width = 2*sizeof(void *);
|
|
flags |= ZEROPAD;
|
|
}
|
|
str = number(str,
|
|
(unsigned long) va_arg(args, void *), 16,
|
|
field_width, precision, flags);
|
|
continue;
|
|
|
|
|
|
case 'n':
|
|
if (qualifier == 'l') {
|
|
long * ip = va_arg(args, long *);
|
|
*ip = (str - buf);
|
|
} else if (qualifier == 'Z') {
|
|
size_t * ip = va_arg(args, size_t *);
|
|
*ip = (str - buf);
|
|
} else {
|
|
int * ip = va_arg(args, int *);
|
|
*ip = (str - buf);
|
|
}
|
|
continue;
|
|
|
|
case '%':
|
|
*str++ = '%';
|
|
continue;
|
|
|
|
/* integer number formats - set up the flags and "break" */
|
|
case 'o':
|
|
base = 8;
|
|
break;
|
|
|
|
case 'X':
|
|
flags |= LARGE;
|
|
case 'x':
|
|
base = 16;
|
|
break;
|
|
|
|
case 'd':
|
|
case 'i':
|
|
flags |= SIGN;
|
|
case 'u':
|
|
break;
|
|
|
|
default:
|
|
*str++ = '%';
|
|
if (*fmt)
|
|
*str++ = *fmt;
|
|
else
|
|
--fmt;
|
|
continue;
|
|
}
|
|
if (qualifier == 'l') {
|
|
num = va_arg(args, unsigned long);
|
|
if (flags & SIGN)
|
|
num = (signed long) num;
|
|
} else if (qualifier == 'Z') {
|
|
num = va_arg(args, size_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, num, base, field_width, precision, flags);
|
|
}
|
|
*str = '\0';
|
|
return str-buf;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static char sprint_buf[1024];
|
|
|
|
void
|
|
printk(char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int n;
|
|
|
|
va_start(args, fmt);
|
|
n = vsprintf(sprint_buf, fmt, args);
|
|
va_end(args);
|
|
write(stdout, sprint_buf, n);
|
|
}
|
|
|
|
int
|
|
printf(char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int n;
|
|
|
|
va_start(args, fmt);
|
|
n = vsprintf(sprint_buf, fmt, args);
|
|
va_end(args);
|
|
write(stdout, sprint_buf, n);
|
|
return n;
|
|
}
|