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#include "u.h"
#include "../port/lib.h"
#include "mem.h"
#include "dat.h"
#include "fns.h"
#include "io.h"
#include "../port/error.h"
#include "msaturn.h"
enum {
Isr = Saturn + 0x0400,
Ipol = Saturn + 0x0404,
Issr = Saturn + 0x0500,
Ier = Saturn + 0x0504,
Ipri = Saturn + 0x0600,
Ithresh = Saturn + 0x0706,
#define Iar Ithresh
};
enum{
Syscfg = Saturn + 0x0100,
};
static uchar intprio[] = {
Vecuart0, // uart 0
Vecunused, // uart 1
Vecunused, // sint
Vectimer0, // timer 0
Vecunused, // timer 1
Vecether, // ethernet
Vecunused, // tea
Vecunused, // irq0
Vecunused, // irq1
Vecunused, // irq2
Vecunused, // irq3
Vecunused, // irq4
Vecunused, // irq5
Vecunused, // irq6
Vecunused, // irq7
Vecunused, // irq8
};
void
intend(int)
{
}
void
hwintrinit(void)
{
int i;
*(ulong*)Ier=0;
for(i=0; i<nelem(intprio)/2; i++)
((uchar*)Ipri)[i] = (intprio[2*i]<<4)|intprio[2*i+1];
}
int
vectorenable(Vctl*v)
{
int i;
for(i=0; i<nelem(intprio); i++)
if(v->irq==intprio[i]){
*(ulong*)Ier |= 1<<(31-i);
return v->irq;
}
print("intrenable: cannot enable intr %d\n", v->irq);
return -1;
}
void
vectordisable(Vctl*v)
{
int i;
for(i=0; i<nelem(intprio); i++)
if(v->irq==intprio[i]){
*(ulong*)Ier &= ~(1<<(31-i));
return;
}
}
int
intvec(void)
{
ushort iar;
int i;
iar = *(ushort*)Iar; // push(prio) onto stack
for(i=0; i<nelem(intprio); i++)
if(iar==intprio[i])
return iar;
iprint("saturnint: no vector %d\n", iar);
intack();
return -1;
}
void
intack(void)
{
*(ushort*)Ithresh = 0; // pop(prio) stack
}
void
machinit(void)
{
int rrate;
ulong hid;
extern char* plan9inistr;
ulong l2cr;
memset(m, 0, sizeof(*m));
m->cputype = getpvr()>>16;
m->imap = (Imap*)INTMEM;
m->loopconst = 1096;
rrate = (*(ushort*)Syscfg >> 6) & 3;
switch(rrate){
case 0:
m->bushz = 66666666;
break;
case 1:
m->bushz = 83333333;
break;
case 2:
m->bushz = 100000000;
break;
case 3:
m->bushz = 133333333;
break;
}
if(getpll() == 0x80000000)
m->cpuhz = 300000000;
else
m->cpuhz = 200000000; /* 750FX? */
m->cyclefreq = m->bushz / 4;
active.machs[0] = 1;
active.exiting = 0;
putmsr(getmsr() | MSR_ME);
dcflush((void*)KZERO, 0x2000000);
l2cr = getl2cr();
putl2cr(l2cr|BIT(10));
kfpinit();
hid=gethid0();
hid |= BIT(28)|BIT(26)|BIT(24);
puthid0(hid);
plan9inistr =
"console=0\n"
"ether0=type=saturn\n"
"fs=135.104.9.42\n"
"auth=135.104.9.7\n"
"authdom=cs.bell-labs.com\n"
"sys=ucu\n"
"ntp=135.104.9.52\n";
}
void
sharedseginit(void)
{
}
void
trapinit(void)
{
int i;
for(i = 0x0; i < 0x2000; i += 0x100)
sethvec(i, trapvec);
dcflush(KADDR(0), 0x2000);
icflush(KADDR(0), 0x2000);
putmsr(getmsr() & ~MSR_IP);
}
void
reboot(void*, void*, ulong)
{
}
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