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/**************************************************************************
MISC Support Routines
**************************************************************************/
#include <stdarg.h>
#include <asm/byteorder.h>
#include <asm/io.h>
#include "proto.h"
void bcopy(void *s,void *d,int n)
{
char *dd = d, *ss = s;
while ((n--) > 0) {
*(dd++) = *(ss++);
}
}
void bzero(void *d,int n)
{
char *dd = d;
while ((n--) > 0) {
*(dd++) = 0;
}
}
int bcmp(void *d,void *s,int n)
{
char *dd = d, *ss = s;
while ((n--) > 0) {
if (*(dd++) != *(ss++)) return(1);
}
return(0);
}
int strcasecmp(char *a,char *b)
{
while (*a && *b && (*a & ~0x20) == (*b & ~0x20)) {a++; b++; }
return((*a & ~0x20) - (*b & ~0x20));
}
int strncmp(char *a,char *b,unsigned long len)
{
for (; len != 0; len--, a++, b++)
if (*a != *b)
return *a - *b;
return 0;
}
void *memset(void *p,int Set,size_t Len)
{
unsigned char *I = p;
for (; Len != 0; Len--,I++)
*I = Set;
return p;
}
/**************************************************************************
PRINTF and friends
Formats:
%X - 4 byte ASCII (8 hex digits)
%x - 2 byte ASCII (4 hex digits)
%b - 1 byte ASCII (2 hex digits)
%d - decimal (also %i)
%c - ASCII char
%s - ASCII string
%I - Internet address in x.x.x.x notation
**************************************************************************/
static char hex[]="0123456789ABCDEF";
char *do_printf(char *buf,char *fmt,va_list args)
{
register char *p;
char tmp[16];
while (*fmt) {
if (*fmt == '\n')
*(buf++) = '\r';
if (*fmt == '%') { /* switch() uses more space */
fmt++;
if (*fmt == 'X') {
register long h = va_arg(args,long);
*(buf++) = hex[(h>>28)& 0x0F];
*(buf++) = hex[(h>>24)& 0x0F];
*(buf++) = hex[(h>>20)& 0x0F];
*(buf++) = hex[(h>>16)& 0x0F];
*(buf++) = hex[(h>>12)& 0x0F];
*(buf++) = hex[(h>>8)& 0x0F];
*(buf++) = hex[(h>>4)& 0x0F];
*(buf++) = hex[h& 0x0F];
}
if (*fmt == 'x') {
register int h = va_arg(args,int);
*(buf++) = hex[(h>>12)& 0x0F];
*(buf++) = hex[(h>>8)& 0x0F];
*(buf++) = hex[(h>>4)& 0x0F];
*(buf++) = hex[h& 0x0F];
}
if (*fmt == 'b') {
register int h = va_arg(args,int);
*(buf++) = hex[(h>>4)& 0x0F];
*(buf++) = hex[h& 0x0F];
}
if ((*fmt == 'd') || (*fmt == 'i')) {
register int dec = va_arg(args,int);
p = tmp;
if (dec < 0) {
*(buf++) = '-';
dec = -dec;
}
do {
*(p++) = '0' + (dec%10);
dec = dec/10;
} while(dec);
while ((--p) >= tmp) *(buf++) = *p;
}
if (*fmt == 'I') {
register long h = va_arg(args,long);
buf = sprintf(buf,"%d.%d.%d.%d",
(int)(h>>24) & 0x00FF,
(int)(h>>16) & 0x00FF,
(int)(h>>8) & 0x00FF,
(int)h & 0x00FF);
}
if (*fmt == 'c')
*(buf++) = va_arg(args,char);
if (*fmt == 's') {
p = va_arg(args,char *);
while (*p) *(buf++) = *p++;
}
} else *(buf++) = *fmt;
fmt++;
}
*buf = 0;
return(buf);
}
char *sprintf(char *buf, char *fmt,...)
{
va_list list;
char *res;
va_start(list,fmt);
res = do_printf(buf,fmt,list);
va_end(list);
return res;
}
void printf(char *fmt,...)
{
va_list list;
char buf[120],*p;
p = buf;
va_start(list,fmt);
do_printf(buf,fmt,list);
while (*p) putchar(*p++);
va_end(list);
}
int getdec(char **ptr)
{
char *p = *ptr;
int ret=0;
if ((*p < '0') || (*p > '9')) return(-1);
while ((*p >= '0') && (*p <= '9')) {
ret = ret*10 + (*p - '0');
p++;
}
*ptr = p;
return(ret);
}
#define K_RDWR 0x60 /* keyboard data & cmds (read/write) */
#define K_STATUS 0x64 /* keyboard status */
#define K_CMD 0x64 /* keybd ctlr command (write-only) */
#define K_OBUF_FUL 0x01 /* output buffer full */
#define K_IBUF_FUL 0x02 /* input buffer full */
#define KC_CMD_WIN 0xd0 /* read output port */
#define KC_CMD_WOUT 0xd1 /* write output port */
#define KB_A20 0xdf /* enable A20,
enable output buffer full interrupt
enable data line
disable clock line */
#ifndef IBM_L40
static void empty_8042(void)
{
extern void slowdownio();
unsigned long time;
char st;
slowdownio();
time = currticks() + 18; /* max wait of 1 second */
while ((((st = inb(K_CMD)) & K_OBUF_FUL) ||
(st & K_IBUF_FUL)) &&
currticks() < time)
inb(K_RDWR);
}
#endif IBM_L40
/*
* Gate A20 for high memory
*/
void gateA20()
{
#ifdef IBM_L40
outb(0x92, 0x2);
#else IBM_L40
empty_8042();
outb(K_CMD, KC_CMD_WOUT);
empty_8042();
outb(K_RDWR, KB_A20);
empty_8042();
#endif IBM_L40
}
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
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