106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
#include "u.h"
|
|
#include "../port/lib.h"
|
|
#include "mem.h"
|
|
#include "dat.h"
|
|
#include "fns.h"
|
|
#include "io.h"
|
|
#include "ureg.h"
|
|
|
|
#include "mp.h"
|
|
|
|
static void
|
|
squidboy(Apic* apic)
|
|
{
|
|
// iprint("Hello Squidboy\n");
|
|
machinit();
|
|
mmuinit();
|
|
cpuidentify();
|
|
cpuidprint();
|
|
syncclock();
|
|
active.machs[m->machno] = 1;
|
|
apic->online = 1;
|
|
lapicinit(apic);
|
|
lapiconline();
|
|
timersinit();
|
|
fpoff();
|
|
schedinit();
|
|
}
|
|
|
|
void
|
|
mpstartap(Apic* apic)
|
|
{
|
|
ulong *apbootp, *pdb, *pte;
|
|
Mach *mach, *mach0;
|
|
int i, machno;
|
|
uchar *p;
|
|
|
|
mach0 = MACHP(0);
|
|
|
|
/*
|
|
* Initialise the AP page-tables and Mach structure. The page-tables
|
|
* are the same as for the bootstrap processor with the exception of
|
|
* the PTE for the Mach structure.
|
|
* Xspanalloc will panic if an allocation can't be made.
|
|
*/
|
|
p = xspanalloc(4*BY2PG, BY2PG, 0);
|
|
pdb = (ulong*)p;
|
|
memmove(pdb, mach0->pdb, BY2PG);
|
|
p += BY2PG;
|
|
|
|
if((pte = mmuwalk(pdb, MACHADDR, 1, 0)) == nil)
|
|
return;
|
|
memmove(p, KADDR(PPN(*pte)), BY2PG);
|
|
*pte = PADDR(p)|PTEWRITE|PTEVALID;
|
|
if(mach0->havepge)
|
|
*pte |= PTEGLOBAL;
|
|
p += BY2PG;
|
|
|
|
mach = (Mach*)p;
|
|
if((pte = mmuwalk(pdb, MACHADDR, 2, 0)) == nil)
|
|
return;
|
|
*pte = PADDR(mach)|PTEWRITE|PTEVALID;
|
|
if(mach0->havepge)
|
|
*pte |= PTEGLOBAL;
|
|
p += BY2PG;
|
|
|
|
machno = apic->machno;
|
|
MACHP(machno) = mach;
|
|
mach->machno = machno;
|
|
mach->pdb = pdb;
|
|
mach->gdt = (Segdesc*)p; /* filled by mmuinit */
|
|
|
|
/*
|
|
* Tell the AP where its kernel vector and pdb are.
|
|
* The offsets are known in the AP bootstrap code.
|
|
*/
|
|
apbootp = (ulong*)(APBOOTSTRAP+0x08);
|
|
*apbootp++ = (ulong)squidboy; /* assembler jumps here eventually */
|
|
*apbootp++ = PADDR(pdb);
|
|
*apbootp = (ulong)apic;
|
|
|
|
/*
|
|
* Universal Startup Algorithm.
|
|
*/
|
|
p = KADDR(0x467); /* warm-reset vector */
|
|
*p++ = PADDR(APBOOTSTRAP);
|
|
*p++ = PADDR(APBOOTSTRAP)>>8;
|
|
i = (PADDR(APBOOTSTRAP) & ~0xFFFF)/16;
|
|
/* code assumes i==0 */
|
|
if(i != 0)
|
|
print("mp: bad APBOOTSTRAP\n");
|
|
*p++ = i;
|
|
*p = i>>8;
|
|
coherence();
|
|
|
|
nvramwrite(0x0F, 0x0A); /* shutdown code: warm reset upon init ipi */
|
|
lapicstartap(apic, PADDR(APBOOTSTRAP));
|
|
for(i = 0; i < 100000; i++){
|
|
if(arch->fastclock == tscticks)
|
|
cycles(&m->tscticks); /* for ap's syncclock(); */
|
|
if(apic->online)
|
|
break;
|
|
delay(1);
|
|
}
|
|
nvramwrite(0x0F, 0x00);
|
|
}
|