ref: b7af62b250e5dff30320a181ca9d53ab5a7c276d
dir: /os/cerf405/main.c/
#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "ureg.h"
#include "../ip/ip.h"
#include "version.h"
#define MAXCONF 32
extern ulong kerndate;
extern int cflag;
int remotedebug;
extern int main_pool_pcnt;
extern int heap_pool_pcnt;
extern int image_pool_pcnt;
char *confname[MAXCONF];
char *confval[MAXCONF];
int nconf;
void addconf(char *, char *);
void eepromscan(void);
static void
options(void)
{
// nconf = archconfval(confname, confval, sizeof(confname));
}
void
doc(char *m)
{
USED(m);
iprint("%s...\n", m);
}
void
idoc(char *m)
{
uartputs(m, strlen(m));
}
static void
poolsizeinit(void)
{
ulong nb;
nb = conf.npage*BY2PG;
poolsize(mainmem, (nb*main_pool_pcnt)/100, 0);
poolsize(heapmem, (nb*heap_pool_pcnt)/100, 0);
poolsize(imagmem, (nb*image_pool_pcnt)/100, 1);
}
static void
serialconsole(void)
{
char *p;
int port, baud;
p = getconf("console");
if(p == nil)
p = "0";
if(p != nil && !remotedebug){
port = strtol(p, nil, 0);
baud = 115200;
p = getconf("baud");
if(p != nil){
baud = strtol(p, nil, 0);
if(baud < 9600)
baud = 9600;
}
uartspecial(port, baud, &kbdq, &printq, kbdcr2nl);
}
}
void
main(void)
{
idoc("machinit...\n");
machinit();
idoc("options...\n");
compiledcr();
options();
// archinit();
quotefmtinstall();
idoc("confinit...\n");
confinit();
xinit();
poolsizeinit();
poolinit();
idoc("trapinit...\n");
trapinit();
mmuinit();
ioinit();
printinit();
uartinstall();
serialconsole();
pcimapinit();
eepromscan();
doc("clockinit");
clockinit();
doc("procinit");
procinit();
cpuidprint();
doc("links");
links();
doc("chandevreset");
chandevreset();
eve = strdup("inferno");
print("\nInferno %s\n", VERSION);
print("Vita Nuova\n");
print("conf %s (%lud) jit %d\n\n",conffile, kerndate, cflag);
doc("userinit");
userinit();
doc("schedinit");
schedinit();
}
//ccdv=1 cbdv=2 opdv=2 epdv=3 mpdv=1 ppdv=2
void
machinit(void)
{
int n;
n = m->machno;
memset(m, 0, sizeof(Mach));
m->machno = n;
m->mmask = 1<<m->machno;
m->cputype = getpvr()>>16;
m->delayloop = 20000; /* initial estimate only; set by clockinit */
m->speed = 266; /* initial estimate only; set by archinit */
m->cpuhz = 266333333;
m->vcohz = 799000000;
m->pllhz = 266333333;
m->plbhz = 133166666;
m->opbhz = 66600000;
m->epbhz = 44*MHz;
m->pcihz = 66600000;
m->clockgen = m->cpuhz; /* it's the internal cpu clock */
}
void
init0(void)
{
Osenv *o;
int i;
char buf[2*KNAMELEN];
up->nerrlab = 0;
spllo();
if(waserror())
panic("init0");
/*
* These are o.k. because rootinit is null.
* Then early kproc's will have a root and dot.
*/
o = up->env;
o->pgrp->slash = namec("#/", Atodir, 0, 0);
cnameclose(o->pgrp->slash->name);
o->pgrp->slash->name = newcname("/");
o->pgrp->dot = cclone(o->pgrp->slash);
chandevinit();
if(!waserror()){
ksetenv("cputype", "power", 0);
snprint(buf, sizeof(buf), "power %s", conffile);
ksetenv("terminal", buf, 0);
poperror();
}
for(i = 0; i < nconf; i++)
if(confname[i][0] != '*'){
if(!waserror()){
ksetenv(confname[i], confval[i], 0);
poperror();
}
}
poperror();
disinit("/osinit.dis");
}
void
userinit(void)
{
Proc *p;
Osenv *o;
p = newproc();
o = p->env;
o->fgrp = newfgrp(nil);
o->pgrp = newpgrp();
o->egrp = newegrp();
kstrdup(&o->user, eve);
strcpy(p->text, "interp");
/*
* Kernel Stack
*/
p->sched.pc = (ulong)init0;
p->sched.sp = (ulong)p->kstack+KSTACK;
ready(p);
}
Conf conf;
void
addconf(char *name, char *val)
{
if(nconf >= MAXCONF)
return;
confname[nconf] = name;
confval[nconf] = val;
nconf++;
}
char*
getconf(char *name)
{
int i;
for(i = 0; i < nconf; i++)
if(cistrcmp(confname[i], name) == 0)
return confval[i];
return 0;
}
void
confinit(void)
{
char *p;
int pcnt;
if(p = getconf("*kernelpercent"))
pcnt = 100 - strtol(p, 0, 0);
else
pcnt = 0;
archconfinit();
conf.npage = conf.npage0 + conf.npage1;
if(pcnt < 10)
pcnt = 70;
conf.ialloc = (((conf.npage*(100-pcnt))/100)/2)*BY2PG;
conf.nproc = 100 + ((conf.npage*BY2PG)/MB)*5;
conf.nmach = MAXMACH;
}
static void
twinkle(void)
{
if(m->ticks%MS2TK(1000) == 0)
((Gpioregs*)PHYSGPIO)->or ^= 1<<31;
}
void (*archclocktick)(void) = twinkle;
void
exit(int ispanic)
{
up = 0;
spllo();
print("cpu %d exiting\n", m->machno);
/* Shutdown running devices */
chandevshutdown();
delay(1000);
splhi();
if(ispanic)
for(;;);
archreboot();
}
void
reboot(void)
{
exit(0);
}
void
halt(void)
{
print("cpu halted\n");
microdelay(1000);
for(;;)
;
}
/*
* kept in case it's needed for PCI/ISA devices
*/
int
isaconfig(char *class, int ctlrno, ISAConf *isa)
{
char cc[KNAMELEN], *p;
int i;
snprint(cc, sizeof cc, "%s%d", class, ctlrno);
p = getconf(cc);
if(p == nil)
return 0;
isa->nopt = tokenize(p, isa->opt, NISAOPT);
for(i = 0; i < isa->nopt; i++){
p = isa->opt[i];
if(cistrncmp(p, "type=", 5) == 0)
isa->type = p + 5;
else if(cistrncmp(p, "port=", 5) == 0)
isa->port = strtoul(p+5, &p, 0);
else if(cistrncmp(p, "irq=", 4) == 0)
isa->irq = strtoul(p+4, &p, 0);
else if(cistrncmp(p, "mem=", 4) == 0)
isa->mem = strtoul(p+4, &p, 0);
else if(cistrncmp(p, "size=", 5) == 0)
isa->size = strtoul(p+5, &p, 0);
else if(cistrncmp(p, "freq=", 5) == 0)
isa->freq = strtoul(p+5, &p, 0);
else if(cistrncmp(p, "dma=", 4) == 0)
isa->dma = strtoul(p+4, &p, 0);
}
return 1;
}
/*
* Save the mach dependent part of the process state.
*/
void
procsave(Proc*)
{
}
void
idlehands(void)
{
putmsr(getmsr() | MSR_WE | MSR_EE | MSR_CE); /* MSR_DE as well? */
}
/* stubs */
void
setfsr(ulong)
{
}
ulong
getfsr()
{
return 0;
}
void
setfcr(ulong)
{
}
ulong
getfcr()
{
return 0;
}
/*
* some of this is possibly ice-cube specific
*/
enum {
Cpc0Pllmr0= 0xF0, /* PLL mode register 0 */
Cpc0Boot= 0xF1, /* clock status */
Cpc0Pllmr1= 0xF4, /* PLL mode register 1 */
Cpc0Srr= 0xF6, /* PCI soft reset */
Cpc0PCI= 0xF9, /* PCI control */
};
/*
00f0 = 00011101
00f1 = 00000025
00f2 = 00000000
00f3 = 00000000
00f4 = 8085523e
00f5 = 00000017
00f6 = 00000000
ccdv=1 cbdv=2 opdv=2 epdv=3 mpdv=1 ppdv=2
fbmul=8 fwdva=5 fwdvb=5 tun=257 m=40
*/
void
archconfinit(void)
{
ulong ktop;
conf.npage0 = (32*1024*1024)/BY2PG;
conf.base0 = 0;
ktop = PGROUND((ulong)end);
ktop = PADDR(ktop) - conf.base0;
conf.npage0 -= ktop/BY2PG;
conf.base0 += ktop;
{int i; for(i=0xF0; i<=0xF6; i++){iprint("%.4ux = %.8lux\n", i, getdcr(i));}}
{
int ccdv, cbdv, opdv, epdv, mpdv, ppdv;
int fbmul, fwdva, fwdvb, tun;
ulong mr0, mr1;
mr0 = getdcr(Cpc0Pllmr0);
ccdv = ((mr0>>20)&3)+1;
cbdv = ((mr0>>16)&3)+1;
opdv = ((mr0>>12)&3)+1;
epdv = ((mr0>>8)&3)+2;
mpdv = ((mr0>>4)&3)+1;
ppdv = (mr0&3)+1;
iprint("ccdv=%d cbdv=%d opdv=%d epdv=%d mpdv=%d ppdv=%d\n",
ccdv, cbdv, opdv, epdv, mpdv, ppdv);
mr1 = getdcr(Cpc0Pllmr1);
fbmul = (mr1>>20) & 0xF;
if(fbmul == 0)
fbmul = 16;
fwdva = (mr1>>16) & 7;
if(fwdva == 0)
fwdva = 8;
fwdvb = (mr1>>12) & 7;
if(fwdvb == 0)
fwdvb = 8;
tun = mr0 & 0x3FF;
iprint("fbmul=%d fwdva=%d fwdvb=%d tun=%d m=%d\n",
fbmul, fwdva, fwdvb, tun, fbmul*fwdva);
}
}
void
archreboot(void)
{
putevpr(~0);
firmware(0);
for(;;);
}
void
clockcheck(void)
{
}
void
cpuidprint(void)
{
iprint("PowerPC 405EP pvr=%8.8lux\n", getpvr());
/* TO DO */
}
#include "../port/flashif.h"
/*
* for devflash.c:/^flashreset
* retrieve flash type, virtual base and length and return 0;
* return -1 on error (no flash)
*/
int
archflashreset(int bank, Flash *f)
{
switch(bank){
case 0:
f->type = "AMD29F0x0"; /* not right, but will do for now */
f->addr = (void*)PHYSFLASH;
f->size = FLASHSIZE;
f->width = 2;
return 0;
case 1:
f->type = "nand";
f->addr = (void*)PHYSNAND;
f->size = 0; /* done by probe */
f->width = 1;
return 0;
default:
return -1;
}
}
void
archflashwp(Flash*, int)
{
}
#include "../port/netif.h"
#include "etherif.h"
enum {
/* EMAC-PHY control, tucked away in CPC0 */
Cpc0Epctl= 0xF3, /* EMAC-PHY ctl */
E0Nf= 1<<31, /* Emac0 noise filter enable */
E1Nf= 1<<30, /* Emac1 noise filter enable */
E1pr= 1<<7, /* Emac1 packet reject is active high */
E0pr= 1<<6, /* Emac 0 packet reject is active high */
E1rm= 1<<5, /* enable Emac 1 packet removal */
E0rm= 1<<4, /* enable Emac 0 packet removal */
E1pci= 1<<1, /* Emac 1 clock source is Tx clock output (loopback) */
E0pci= 1<<0, /* Emac 0 clock source is Tx clock output (loopback) */
};
int
archether(int ctlno, Ether *ether)
{
char name[KNAMELEN], *p;
int s;
if(ctlno > 1)
return -1;
ether->type = "EMAC";
ether->port = ctlno;
if(ctlno != 0)
snprint(name, sizeof(name), "eth%daddr", ctlno);
else
strcpy(name, "ethaddr");
p = getconf(name);
if(p == 0){
iprint("ether%d: no %s in EEPROM env\n", ctlno, name);
return -1;
}
parsemac(ether->ea, p, Eaddrlen);
s = splhi();
putdcr(Cpc0Epctl, getdcr(Cpc0Epctl) | (ctlno?E1Nf:E0Nf));
splx(s);
return 1;
}
enum {
/* UART control */
Cpc0Ucr= 0xF5, /* UART control register */
U0Dc= 1<<21, /* UART0 DMA clear enable */
U0Dt= 1<<20, /* enable UART0 DMA transmit channel */
U0Dr= 1<<19, /* enable UART0 DMA receive channel */
U1Dc= 1<<18, /* UART1 DMA clear enable */
U1Dt= 1<<17, /* enable UART1 DMA transmit channel */
U1Dr= 1<<16, /* enable UART1 DMA receive channel */
U1Div_s= 8, /* UART1 serial clock divisor (shift) */
U1Stop= 1<<8,
U0Div_s= 0, /* UART0 serial clock divisor (shift) */
U0Stop= 1<<0,
UDiv_m= 0x7F, /* UARTx divisor mask */
};
static ulong
findserialclock(int rate, ulong *freq)
{
ulong d, b;
ulong serialclock;
int actual, e, beste, bestd;
*freq = 0;
if(rate == 0)
return 0;
d = ((m->pllhz+m->opbhz-1)/m->opbhz)*2; /* double to allow for later rounding */
beste = 0;
bestd = -1;
for(; d<=128; d++){
serialclock = (2*m->pllhz)/d;
b = ((serialclock+8*rate-1)/(rate*16))>>1;
actual = ((serialclock+8*b-1)/(b*16))>>1;
e = rate-actual;
if(e < 0)
e = -e;
if(bestd < 0 || e < beste || e == beste && (bestd&1) && (d&1)==0){
beste = e;
bestd = d;
}
}
if(bestd > 0)
*freq = m->pllhz/bestd;
return bestd;
}
/*
* return a value for UARTn's baud rate generator, and
* set a corresponding divsor in the UARTn clock generator
* (between 2 and 128)
*/
ulong
archuartclock(int n, int rate)
{
int d, s;
ulong m, freq;
d = findserialclock(rate, &freq);
if(d <= 0)
d = U0Stop;
m = UDiv_m;
if(n){
d <<= U1Div_s;
m <<= U1Div_s;
}
s = splhi();
putdcr(Cpc0Ucr, (getdcr(Cpc0Ucr) & ~m) | d);
splx(s);
return freq;
}
void
archuartdma(int n, int on)
{
ulong r;
int s;
r = n? (U1Dc|U1Dt|U1Dr): (U0Dc|U0Dt|U0Dr);
if(on){
s = splhi();
putdcr(Cpc0Ucr, getdcr(Cpc0Ucr) | r);
splx(s);
}else{
s = splhi();
putdcr(Cpc0Ucr, getdcr(Cpc0Ucr) & ~r);
splx(s);
}
}
/*
* boot environment in eeprom
*/
enum {
EEpromHdr= 8, /* bytes */
Envsize= 0x400,
};
static I2Cdev eedev;
static struct {
uchar buf[Envsize];
int size;
} bootenv;
static int
eepromitem(uchar *buf, int lim, ulong *off)
{
int l;
uchar b;
if(i2crecv(&eedev, &b, 1, (*off)++) != 1)
return -1;
l = b;
if(l & 0x80){
if(i2crecv(&eedev, &b, 1, (*off)++) != 1)
return -1;
l = ((l & 0x7F)<<8) | b;
}
if(buf == nil)
return l;
if(l > lim)
l = lim;
return i2crecv(&eedev, buf, l, *off);
}
void
eepromscan(void)
{
int n, l;
ulong off;
uchar buf[2];
char *p, *ep, *v;
eedev.addr = 0x50;
eedev.salen = 2;
i2csetup(1);
n = i2crecv(&eedev, buf, sizeof(buf), 0);
if(n <= 0){
iprint("eepromscan: %d\n", n);
return;
}
if(buf[0] != 0xEF || buf[1] != 0xBE){
iprint("eeprom invalid\n");
return;
}
bootenv.size = 0;
for(off = EEpromHdr; off < 16384;){
l = eepromitem(bootenv.buf, sizeof(bootenv.buf), &off); /* key */
if(l <= 0)
break;
off += l;
if(l == 7 && memcmp(bootenv.buf, "PPCBOOT", 7) == 0){ /* intrinsyc key */
bootenv.size = eepromitem(bootenv.buf, sizeof(bootenv.buf), &off);
break;
}
l = eepromitem(nil, 0, &off); /* skip value */
if(l < 0)
break;
off += l+2; /* 2 byte crc */
}
p = (char*)bootenv.buf+4; /* skip crc */
ep = p+bootenv.size;
for(; p < ep && *p; p += l){
l = strlen(p)+1;
v = strchr(p, '=');
if(v != nil)
*v++ = 0;
else
v = "";
addconf(p, v);
if(0)
iprint("%q = %q\n", p, v);
}
}
ulong
logfsnow(void)
{
return rtctime();
}