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added mp table override

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This commit is contained in:
aiju 2011-04-24 17:39:48 +02:00
parent b267359b69
commit a71e017fcc
1 changed files with 47 additions and 1 deletions
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48
sys/src/9/pc/mp.c
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@ -154,6 +154,8 @@ mkioapic(PCMPioapic* p)
return 0;
apic = &mpapic[apicno];
if(apic->flags != 0)
print("mkioapic: APIC ID conflict at %d\n", p->apicno);
apic->type = PcmpIOAPIC;
apic->apicno = apicno;
apic->addr = va;
@ -484,6 +486,46 @@ mpstartap(Apic* apic)
nvramwrite(0x0F, 0x00);
}
static void
dumpmp(uchar *p, uchar *e)
{
int i;
for(i = 0; p < e; p++) {
if((i % 16) == 0) print("*mp%d=", i/16);
print("%.2x ", *p);
if((++i % 16) == 0) print("\n");
}
if((i % 16) != 0) print("\n");
}
static void
mpoverride(uchar** newp, uchar** e)
{
int size, i, j;
char buf[20];
uchar* p;
char* s;
size = atoi(getconf("*mp"));
if(size == 0) panic("mpoverride: invalid size in *mp");
*newp = p = malloc(size);
if(p == nil) panic("mpoverride: can't allocate memory");
*e = p + size;
for(i = 0; ; i++){
snprint(buf, sizeof buf, "*mp%d", i);
s = getconf(buf);
if(s == nil) break;
while(*s){
j = strtol(s, &s, 16);
if(*s && *s != ' ' || j < 0 || j > 0xff) panic("mpoverride: invalid entry in %s", buf);
if(p >= *e) panic("mpoverride: overflow in %s", buf);
*p++ = j;
}
}
if(p != *e) panic("mpoverride: size doesn't match");
}
void
mpinit(void)
{
@ -518,6 +560,10 @@ mpinit(void)
*/
p = ((uchar*)pcmp)+sizeof(PCMP);
e = ((uchar*)pcmp)+pcmp->length;
if(getconf("*dumpmp") != nil)
dumpmp(p, e);
if(getconf("*mp") != nil)
mpoverride(&p, &e);
while(p < e) switch(*p){
default:
@ -683,7 +729,7 @@ mpintrenablex(Vctl* v, int tbdf)
break;
}
if(bus == nil){
print("ioapicirq: can't find bus type %d\n", type);
print("ioapicirq: can't find bus type %d, number %d\n", type, bno);
return -1;
}