/**************************************************************************
MISC Support Routines
**************************************************************************/
#include "etherboot.h"
/**************************************************************************
SLEEP
**************************************************************************/
void sleep(int secs)
{
unsigned long tmo;
for (tmo = currticks()+secs*TICKS_PER_SEC; currticks() < tmo; )
/* Nothing */;
}
/**************************************************************************
TWIDDLE
**************************************************************************/
void twiddle()
{
static unsigned long lastticks = 0;
static int count=0;
static const char tiddles[]="-\\|/";
unsigned long ticks;
if ((ticks = currticks()) == lastticks)
return;
lastticks = ticks;
putchar(tiddles[(count++)&3]);
putchar('\b');
}
/**************************************************************************
STRCASECMP (not entirely correct, but this will do for our purposes)
**************************************************************************/
int strcasecmp(a,b)
char *a, *b;
{
while (*a && *b && (*a & ~0x20) == (*b & ~0x20)) {a++; b++; }
return((*a & ~0x20) - (*b & ~0x20));
}
/**************************************************************************
PRINTF and friends
Formats:
%[#]X - 4 bytes long (8 hex digits)
%[#]x - 2 bytes int (4 hex digits)
- optional # prefixes 0x
%b - 1 byte int (2 hex digits)
%d - decimal int
%c - char
%s - string
%I - Internet address in x.x.x.x notation
Note: width specification not supported
**************************************************************************/
static char *do_printf(char *buf, const char *fmt, const int *dp)
{
register char *p;
int alt;
char tmp[16];
static const char hex[]="0123456789ABCDEF";
while (*fmt) {
if (*fmt == '%') { /* switch() uses more space */
alt = 0;
fmt++;
if (*fmt == '#') {
alt = 1;
fmt++;
}
if (*fmt == 'X') {
const long *lp = (const long *)dp;
register long h = *lp++;
dp = (const int *)lp;
if (alt) {
*buf++ = '0';
*buf++ = 'x';
}
*(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 = *(dp++);
if (alt) {
*buf++ = '0';
*buf++ = 'x';
}
*(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 = *(dp++);
*(buf++) = hex[(h>>4)& 0x0F];
*(buf++) = hex[h& 0x0F];
}
if (*fmt == 'd') {
register int dec = *(dp++);
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') {
union {
long l;
unsigned char c[4];
} u;
const long *lp = (const long *)dp;
u.l = *lp++;
dp = (const int *)lp;
buf = sprintf(buf,"%d.%d.%d.%d",
u.c[0], u.c[1], u.c[2], u.c[3]);
}
if (*fmt == 'c')
*(buf++) = *(dp++);
if (*fmt == 's') {
p = (char *)*dp++;
while (*p) *(buf++) = *p++;
}
} else *(buf++) = *fmt;
fmt++;
}
*buf = '\0';
return(buf);
}
char *sprintf(char *buf, const char *fmt, ...)
{
return do_printf(buf, fmt, ((const int *)&fmt)+1);
}
void printf(const char *fmt, ...)
{
char buf[120], *p;
p = buf;
do_printf(buf, fmt, ((const int *)&fmt)+1);
while (*p) putchar(*p++);
}
#ifdef IMAGE_MENU
/**************************************************************************
INET_ATON - Convert an ascii x.x.x.x to binary form
**************************************************************************/
int inet_aton(char *p, in_addr *i)
{
unsigned long ip = 0;
int val;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
if (*p != '.') return(0);
p++;
ip = val;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
if (*p != '.') return(0);
p++;
ip = (ip << 8) | val;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
if (*p != '.') return(0);
p++;
ip = (ip << 8) | val;
if (((val = getdec(&p)) < 0) || (val > 255)) return(0);
i->s_addr = htonl((ip << 8) | val);
return(1);
}
#endif /* IMAGE_MENU */
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_SET_A20 0xdf /* enable A20,
enable output buffer full interrupt
enable data line
disable clock line */
#define KB_UNSET_A20 0xdd /* enable A20,
enable output buffer full interrupt
enable data line
disable clock line */
#ifndef IBM_L40
static void empty_8042(void)
{
unsigned long time;
char st;
time = currticks() + TICKS_PER_SEC; /* 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_set(void)
{
#ifdef IBM_L40
outb(0x2, 0x92);
#else /* IBM_L40 */
empty_8042();
outb(KC_CMD_WOUT, K_CMD);
empty_8042();
outb(KB_SET_A20, K_RDWR);
empty_8042();
#endif /* IBM_L40 */
}
#ifdef TAGGED_IMAGE
/*
* Unset Gate A20 for high memory - some operating systems (mainly old 16 bit
* ones) don't expect it to be set by the boot loader.
*/
void gateA20_unset(void)
{
#ifdef IBM_L40
outb(0x0, 0x92);
#else /* IBM_L40 */
empty_8042();
outb(KC_CMD_WOUT, K_CMD);
empty_8042();
outb(KB_UNSET_A20, K_RDWR);
empty_8042();
#endif /* IBM_L40 */
}
#endif
#ifdef ETHERBOOT32
/* Serial console is only implemented in ETHERBOOT32 for now */
void
putchar(int c)
{
#ifndef ANSIESC
if (c == '\n')
putchar('\r');
#endif
#ifdef CONSOLE_CRT
#ifdef ANSIESC
handleansi(c);
#else
putc(c);
#endif
#endif
#ifdef CONSOLE_SERIAL
#ifdef ANSIESC
if (c == '\n')
serial_putc('\r');
#endif
serial_putc(c);
#endif
}
/**************************************************************************
GETCHAR - Read the next character from the console WITHOUT ECHO
**************************************************************************/
int
getchar(void)
{
int c = 256;
#if defined CONSOLE_CRT || defined CONSOLE_SERIAL
do {
#ifdef CONSOLE_CRT
if (ischar())
c = getc();
#endif
#ifdef CONSOLE_SERIAL
if (serial_ischar())
c = serial_getc();
#endif
} while (c==256);
if (c == '\r')
c = '\n';
#endif
return c;
}
int
iskey(void)
{
#ifdef CONSOLE_CRT
if (ischar())
return 1;
#endif
#ifdef CONSOLE_SERIAL
if (serial_ischar())
return 1;
#endif
return 0;
}
#endif /* ETHERBOOT32 */
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
#include <asm/msr.h>
#define CPUCLOCK 166
unsigned long currticks(void)
{
register unsigned long l, h;
long long unsigned p;
long long unsigned hh,ll;
rdtsc(l, h);
ll = l, hh = h;
p = (ll + hh * 0x100000000LL) * 182 / (CPUCLOCK * 100000LL);
return (unsigned)p;
}
