void
main(void)
{
mmuinvalidate();
/* zero out bss */
memset(edata, 0, end-edata);
/* point to Mach structure */
m = (Mach*)MACHADDR;
memset(m, 0, sizeof(Mach));
m->ticks = 1;
active.machs = 1;
rs232power(1);
quotefmtinstall();
iprint("\nPlan 9 bitsy kernel\n");
confinit();
xinit();
mmuinit();
machinit();
trapinit();
sa1110_uartsetup(1);
dmainit();
screeninit();
printinit(); /* from here on, print works, before this we need iprint */
clockinit();
procinit0();
initseg();
links();
chandevreset();
pageinit();
swapinit();
userinit();
powerinit();
schedinit();
}
void
deepsleep(void) {
static int power_pl;
ulong xsp, xlink;
// ulong mecr;
ulong clkd;
vlong savedtod;
extern void power_resume(void);
power_pl = splhi();
xlink = getcallerpc(&xlink);
/* Power down */
pcmciapower(0);
irpower(0);
audiopower(0);
screenpower(0);
µcpower(0);
iprint("entering suspend mode, sp = %#p, pc = 0x%lux, psw = 0x%ux\n",
&xsp, xlink, power_pl);
// dumpitall();
delay(1000);
uartpower(0);
rs232power(0);
clockpower(0);
gpiosave(&savedgpioregs, gpioregs);
intrcpy(&savedintrregs, intrregs);
cacheflush();
delay(50);
if(setpowerlabel()){
/* return here with mmu back on */
trapresume();
gpiorestore(gpioregs, &savedgpioregs);
delay(50);
intrcpy(intrregs, &savedintrregs);
if(intrregs->icip & (1<<IRQgpio0)){
// don't want to sleep now. clear on/off irq.
gpioregs->edgestatus = (1<<IRQgpio0);
intrregs->icip = (1<<IRQgpio0);
}
clkd = clockpower(1);
gpclkregs->r0 = 1<<0;
todset(savedtod + clkd * TODFREQ, 0LL, 0);
resetsuspendtimer();
rs232power(1);
uartpower(1);
delay(100);
xlink = getcallerpc(&xlink);
iprint("\nresuming execution, sp = %#p, pc = 0x%lux, psw = 0x%ux\n",
&xsp, xlink, splhi());
// dumpitall();
delay(1000);
// irpower(1);
audiopower(1);
µcpower(1);
screenpower(1);
pcmciapower(1);
splx(power_pl);
return;
}
cacheflush();
delay(100);
savedtod = todget(nil);
power_down();
/* no return */
}
