Exemple #1
0
/*
 * at entry, l.s has set m for cpu0 and printed "Plan 9 from Be"
 * but has not zeroed bss.
 */
void
main(void)
{
	int cpu;
	static ulong vfy = 0xcafebabe;

	up = nil;
	if (vfy != 0xcafebabe) {
		serialputc('?');
		serialputc('d');
		panic("data segment misaligned");
	}

	memset(edata, 0, end - edata);

	/*
	 * we can't lock until smpon has run, but we're supposed to wait
	 * until l1 & l2 are on.  too bad.  l1 is on, l2 will soon be.
	 */
	smpon();
	iprint("ll Labs ");
	cacheinit();

	/*
	 * data segment is aligned, bss is zeroed, caches' characteristics
	 * are known.  begin initialisation.
	 */
	mach0init();
	l2pageinit();
	mmuinit();

	optionsinit("/boot/boot boot");
	quotefmtinstall();

	/* want plan9.ini to be able to affect memory sizing in confinit */
	plan9iniinit();		/* before we step on plan9.ini in low memory */

	/* l2 looks for *l2off= in plan9.ini */
	l2cache->on();		/* l2->on requires locks to work, thus smpon */
	l2cache->info(&cachel[2]);
	allcache->on();

	cortexa9cachecfg();

	trapinit();		/* so confinit can probe memory to size it */
	confinit();		/* figures out amount of memory */
	/* xinit prints (if it can), so finish up the banner here. */
	delay(100);
	navailcpus = getncpus();
	iprint("(mp arm; %d cpus)\n\n", navailcpus);
	delay(100);

	for (cpu = 1; cpu < navailcpus; cpu++)
		stopcpu(cpu);

	xinit();
	irqtooearly = 0;	/* now that xinit and trapinit have run */

	mainmem->flags |= POOL_ANTAGONISM /* | POOL_PARANOIA */ ;

	/*
	 * Printinit will cause the first malloc call.
	 * (printinit->qopen->malloc) unless any of the
	 * above (like clockinit) do an irqenable, which
	 * will call malloc.
	 * If the system dies here it's probably due
	 * to malloc(->xalloc) not being initialised
	 * correctly, or the data segment is misaligned
	 * (it's amazing how far you can get with
	 * things like that completely broken).
	 *
	 * (Should be) boilerplate from here on.
	 */

	archreset();			/* cfg clock signals, print cache cfg */
	clockinit();			/* start clocks */
	timersinit();

	delay(50);			/* let uart catch up */
	printinit();
	kbdenable();

	cpuidprint();
	chkmissing();

	procinit0();
	initseg();

//	dmainit();
	links();
	conf.monitor = 1;
//	screeninit();

	iprint("pcireset...");
	pcireset();			/* this tends to hang after a reboot */
	iprint("ok\n");

	chandevreset();			/* most devices are discovered here */
//	i8250console();			/* too early; see init0 */

	pageinit();			/* prints "1020M memory: ⋯ */
	swapinit();
	userinit();

	/*
	 * starting a cpu will eventually result in it calling schedinit,
	 * so everything necessary to run user processes should be set up
	 * before starting secondary cpus.
	 */
	launchinit();
	/* SMP & FW are already on when we get here; u-boot set them? */
	for (cpu = 1; cpu < navailcpus; cpu++)
		if (startcpu(cpu) < 0)
			panic("cpu%d didn't start", cpu);
	l1diag();

	schedinit();
	panic("cpu%d: schedinit returned", m->machno);
}
Exemple #2
0
void
main(void)
{
	int machno;

	/* entry to main pushed stuff onto the stack. */

//	memset(edata, 0, (ulong)end-(ulong)edata);

	machno = getpir();
	if (machno > 0)
		startcpu(machno);

//	dcrcompile();
	if (dverify != 0x01020304) {
		uartlputs("data segment not initialised\n");
		panic("data segment not initialised");
	}
	if (bverify != 0) {
		uartlputs("bss segment not zeroed\n");
		panic("bss segment not zeroed");
	}
	mach0init();
	archreset();
	quotefmtinstall();
	optionsinit("/boot/boot boot");
//	archconsole();

	meminit();
	confinit();
	mmuinit();
	xinit();			/* xinit would print if it could */
	trapinit();
	qtminit();
	ioinit();
	uncinit();
	printinit();
	uartliteconsole();

	mainmem->flags |= POOL_ANTAGONISM;
	mainmem->panic = mypanic;
	ethermedium.maxtu = 1512;   /* must be multiple of 4 for temac's dma */

//	print("\n\nPlan 9k H\n");	/* already printed by l.s */
	plan9iniinit();
	timersinit();
	clockinit();

	dma0init();			/* does not start kprocs; see init0 */
	fpuinit();
	procinit0();
	initseg();
	links();

	chandevreset();
	okprint = 1;			/* only now can we print */
	barriers();
	dcflush((uintptr)&okprint, sizeof okprint);

	cpuidprint();

	print("%d Hz clock", HZ);
	print("; memory size %,ud (%#ux)\n", (uint)memsz, (uint)memsz);

	pageinit();
	swapinit();
	userinit();
	active.thunderbirdsarego = 1;
	dcflush((uintptr)&active.thunderbirdsarego,
		sizeof active.thunderbirdsarego);
	schedinit();
	/* no return */
	panic("schedinit returned");
}