/*
* Print a string on the console. Convert \n to \r\n for serial
* line consoles. Locking of the queues is left up to the screen
* or uart code. Multi-line messages to serial consoles may get
* interspersed with other messages.
*/
static void
putstrn0(char *str, int n, int usewrite)
{
if(!islo())
usewrite = 0;
/*
* how many different output devices do we need?
*/
kmesgputs(str, n);
/*
* if someone is reading /dev/kprint,
* put the message there.
* if not and there's an attached bit mapped display,
* put the message there.
*
* if there's a serial line being used as a console,
* put the message there.
*/
if(kprintoq != nil && !qisclosed(kprintoq)){
if(usewrite)
qwrite(kprintoq, str, n);
else
qiwrite(kprintoq, str, n);
}else if(screenputs != nil)
screenputs(str, n);
uartputs(str, n);
#if 0 // Plan 9 VX
if(serialoq == nil){
uartputs(str, n);
return;
}
while(n > 0) {
t = memchr(str, '\n', n);
if(t && !kbd.raw) {
m = t-str;
if(usewrite){
qwrite(serialoq, str, m);
qwrite(serialoq, "\r\n", 2);
} else {
qiwrite(serialoq, str, m);
qiwrite(serialoq, "\r\n", 2);
}
n -= m+1;
str = t+1;
} else {
if(usewrite)
qwrite(serialoq, str, n);
else
qiwrite(serialoq, str, n);
break;
}
}
#endif
}
void
consputs(char* s, int n)
{
cgaconsputs(s, n);
if(useuart)
uartputs(&consoq, s, n);
}
void
idlehands(void)
{
char *msgb = "idlehands called with splhi\n";
char *msga = "doze returns with splhi\n";
if(!islo()){
uartputs(msga, strlen(msga));
spllo();
}
doze();
if(!islo()){
uartputs(msgb, strlen(msgb));
spllo();
}
}
/*
* Avoid outputting debugging to ourselves. Assumes a serial port.
*/
static int
cecprint(char *fmt, ...)
{
char buf[PRINTSIZE];
int n;
va_list arg;
va_start(arg, fmt);
n = vseprint(buf, buf+sizeof buf, fmt, arg)-buf;
va_end(arg);
uartputs(buf, n);
return n;
}
int
iprint(char *fmt, ...)
{
int n, s;
va_list arg;
char buf[PRINTSIZE];
s = splhi();
va_start(arg, fmt);
n = vseprint(buf, buf+sizeof(buf), fmt, arg) - buf;
va_end(arg);
if(screenputs != nil && iprintscreenputs)
screenputs(buf, n);
uartputs(buf, n);
splx(s);
return n;
}
void
consinit(char* name, char* speed)
{
int baud, port;
if(name == nil || cistrcmp(name, "cga") == 0)
return;
port = strtoul(name, 0, 0);
if(port < 0 || port > 1)
return;
if(speed == nil || (baud = strtoul(speed, 0, 0)) == 0)
baud = 9600;
qinit(&consoq);
uartspecial(port, kbdchar, consputc, baud);
useuart = 1;
uartputs(&consoq, "\n", 1);
}
int iprint(char *fmt, ...)
{
int8_t s = 0;
int n, locked;
va_list arg;
char buf[PRINTSIZE];
disable_irqsave(&s);
va_start(arg, fmt);
n = vsnprintf(buf, sizeof(buf), fmt, arg);
va_end(arg);
locked = iprintcanlock(&iprintlock);
if (screenputs != NULL && iprintscreenputs)
screenputs(buf, n);
#if 0
uartputs(buf, n);
#endif
if (locked)
spin_unlock(&iprintlock);
enable_irqsave(&s);
return n;
}
void
main(void)
{
Proc *savup;
static ulong vfy = Datamagic;
static char novga[] = "\nno vga; serial console only\n";
savup = up;
up = nil;
/* m has been set by l32v.s */
/*
* disable address wraps at 1MB boundaries.
* if we're 9boot, ldecomp.s already did this.
*/
a20init();
mach0init();
// options(); /* we don't get options passed to us */
ioinit();
/* we later call i8250console after plan9.ini has been read */
i8250config("0"); /* configure serial port 0 with defaults */
quotefmtinstall();
fmtinstall('i', eipfmt);
fmtinstall('I', eipfmt);
fmtinstall('E', eipfmt);
fmtinstall('V', eipfmt);
fmtinstall('M', eipfmt);
screeninit(); /* cga setup */
cgapost(0xc);
trapinit0();
mmuinit0();
kbdinit();
i8253init();
cpuidentify();
readlsconf();
meminit();
confinit();
archinit();
xinit();
if(i8237alloc != nil)
i8237alloc(); /* dma (for floppy) init */
trapinit();
printinit();
sanity();
cgapost(1);
/*
* soekris servers have no built-in video but each has a serial port.
* they must see serial output, if any, before cga output because
* otherwise the soekris bios will translate cga output to serial
* output, which will garble serial console output.
*/
pcimatch(nil, 0, 0); /* force scan of pci table */
if (!pcivga) {
screenputs = nil;
uartputs(novga, sizeof novga - 1);
}
print(" %s\n\n", hellomsg);
if (vfy != Datamagic)
panic("data segment incorrectly aligned or loaded");
if (savup)
print("up was non-nil (%#p) upon entry to main; bss wasn't zeroed!\n",
savup);
// xsummary();
cpuidprint();
mmuinit();
if(arch->intrinit) /* launches other processors on an mp */
arch->intrinit();
timersinit();
mathinit();
kbdenable();
/*
* 9loadusb runs much faster if we don't use the clock.
* perhaps we're competing with the bios for the use of it?
*/
if(!noclock && arch->clockenable)
arch->clockenable();
procinit0();
initseg();
if(delaylink){
bootlinks();
pcimatch(0, 0, 0);
}else
links();
conf.monitor = 1;
cgapost(0xcd);
chandevreset();
cgapost(2);
pageinit(); /* must follow xinit, and conf.mem must be populated */
i8253link();
userinit();
active.thunderbirdsarego = 1;
cgapost(0xb0);
schedinit();
}