int
floppyinit(void)
{
FDrive *dp;
FType *t;
ulong maxtsize;
int mask;
dmainit(DMAchan);
floppysetup0(&fl);
/*
* init dependent parameters
*/
maxtsize = 0;
for(t = floppytype; t < &floppytype[nelem(floppytype)]; t++) {
t->cap = t->bytes * t->heads * t->sectors * t->tracks;
t->bcode = b2c[t->bytes/128];
t->tsize = t->bytes * t->sectors;
if(maxtsize < t->tsize)
maxtsize = t->tsize;
}
fl.selected = fl.d;
floppydetach = _floppydetach;
floppydetach();
/*
* init drives
*/
mask = 0;
for(dp = fl.d; dp < &fl.d[fl.ndrive]; dp++) {
dp->dev = dp - fl.d;
if(dp->dt == Tnone)
continue;
mask |= 1<<dp->dev;
floppysetdef(dp);
dp->cyl = -1; /* because we don't know */
dp->cache = (uchar*)xspanalloc(maxtsize, BY2PG, 64*1024);
dp->ccyl = -1;
dp->vers = 0;
dp->maxtries = 5;
}
/*
* first operation will recalibrate
*/
fl.confused = 1;
floppysetup1(&fl);
/* to turn the motor off when inactive */
alarm(5*1000, floppyalarm, 0);
return mask;
}
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();
}
static void
floppyreset(void)
{
FDrive *dp;
FType *t;
ulong maxtsize;
floppysetup0(&fl);
if(fl.ndrive == 0)
return;
/*
* init dependent parameters
*/
maxtsize = 0;
for(t = floppytype; t < &floppytype[nelem(floppytype)]; t++){
t->cap = t->bytes * t->heads * t->sectors * t->tracks;
t->bcode = b2c[t->bytes/128];
t->tsize = t->bytes * t->sectors;
if(maxtsize < t->tsize)
maxtsize = t->tsize;
}
/*
* Should check if this fails. Can do so
* if there is no space <= 16MB for the DMA
* bounce buffer.
*/
dmainit(DMAchan, maxtsize);
/*
* allocate the drive storage
*/
fl.d = xalloc(fl.ndrive*sizeof(FDrive));
fl.selected = fl.d;
/*
* stop the motors
*/
fl.motor = 0;
delay(10);
outb(Pdor, fl.motor | Fintena | Fena);
delay(10);
/*
* init drives
*/
for(dp = fl.d; dp < &fl.d[fl.ndrive]; dp++){
dp->dev = dp - fl.d;
dp->dt = T1440kb;
floppysetdef(dp);
dp->cyl = -1; /* because we don't know */
dp->cache = (uchar*)xspanalloc(maxtsize, BY2PG, 64*1024);
dp->ccyl = -1;
dp->vers = 0;
}
/*
* first operation will recalibrate
*/
fl.confused = 1;
floppysetup1(&fl);
}
void
init0(void)
{
int i;
char buf[2*KNAMELEN];
assert(up != nil);
up->nerrlab = 0;
barriers();
intrack(~0);
clrmchk();
barriers();
spllo();
/*
* These are o.k. because rootinit is null.
* Then early kproc's will have a root and dot.
*/
up->slash = namec("#/", Atodir, 0, 0);
pathclose(up->slash->path);
up->slash->path = newpath("/");
up->dot = cclone(up->slash);
dmainit(); /* starts dma kprocs */
devtabinit();
if(!waserror()){
snprint(buf, sizeof(buf), "power %s", conffile);
ksetenv("terminal", buf, 0);
ksetenv("cputype", "power", 0);
if(cpuserver)
ksetenv("service", "cpu", 0);
else
ksetenv("service", "terminal", 0);
/* virtex configuration */
ksetenv("nvram", "/boot/nvram", 0);
ksetenv("nvroff", "0", 0);
ksetenv("nvrlen", "512", 0);
ksetenv("nobootprompt", "tcp", 0);
poperror();
}
for(i = 0; i < nconf; i++){
if(confval[i] == nil)
continue;
if(confname[i][0] != '*'){
if(!waserror()){
ksetenv(confname[i], confval[i], 0);
poperror();
}
}
if(!waserror()){
ksetenv(confname[i], confval[i], 1);
poperror();
}
}
kproc("alarm", alarmkproc, 0);
if (securemem)
kproc("mutate", mutateproc, 0);
else
print("no secure memory found\n");
/*
* The initial value of the user stack must be such
* that the total used is larger than the maximum size
* of the argument list checked in syscall.
*/
sync();
isync();
touser(sp);
}
void
main(void)
{
// int i;
extern char bdata[], edata[], end[], etext[];
static ulong vfy = 0xcafebabe;
/* l.s has already printed "Plan 9 from Be" */
// m = mach; /* now done in l.s */
/* realign data seg; apparently -H0 -R4096 does not pad the text seg */
if (vfy != 0xcafebabe) {
// wave('<'); wave('-');
memmove(bdata, etext, edata - bdata);
}
/*
* once data segment is in place, always zero bss since we may
* have been loaded by another Plan 9 kernel.
*/
memset(edata, 0, end - edata); /* zero BSS */
cacheuwbinv();
l2cacheuwbinv();
if (vfy != 0xcafebabe)
panic("data segment misaligned");
vfy = 0;
wave('l');
machinit();
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 */
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(500);
iprint("l Labs\n\n");
delay(500);
xinit();
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(); /* configure clock signals */
clockinit(); /* start clocks */
timersinit();
watchdoginit();
delay(250); /* let uart catch up */
printinit();
// kbdenable();
cpuidprint();
// chkmissing();
procinit0();
initseg();
dmainit();
links();
conf.monitor = 1;
screeninit();
chandevreset(); /* most devices are discovered here */
// i8250console(); /* too early; see init0 */
pageinit();
swapinit();
userinit();
schedinit();
}