int
flashinit(void)
{
int len;
char *val;
Flalloc *ap;
void *addr;
long mbytes;
char type[20];
flash.base = 0;
flash.exec = 0;
flash.size = 0;
if(archflashreset(type, &addr, &mbytes) < 0){
print("flash: flash not present or not enabled\n"); /* shouldn't happen */
return 0;
}
flash.size = mbytes;
flash.base = addr;
flash.exec = flash.base + BOOTOFF;
flash.config = nil;
flash.conflen = 0;
for(ap = (Flalloc*)(flash.base+CONFIGLIM)-1; memcmp(ap->sig, flashsig, 4) == 0; ap--){
if(0)
print("conf #%8.8lux: #%x #%6.6lux\n", ap, ap->tag, ap->base);
if(ap->tag == Tconf &&
flashcheck(ap, &val, &len) &&
len >= sizeof(conftag)-1 &&
memcmp(val, conftag, sizeof(conftag)-1) == 0){
flash.config = val;
flash.conflen = len;
if(0)
print("flash: found config %8.8lux(%d):\n%s\n", val, len, val);
}
}
if(flash.config == nil)
print("flash: no config\n");
else
print("flash config %8.8lux(%d):\n%s\n", flash.config, flash.conflen, flash.config);
if(issqueezed(flash.exec) == Q_MAGIC){
print("flash: squeezed powerpc kernel installed\n");
return 1<<0;
}
if(GLLONG(flash.exec) == Q_MAGIC){
print("flash: unsqueezed powerpc kernel installed\n");
return 1<<0;
}
flash.exec = 0;
print("flash: no powerpc kernel in Flash\n");
return 0;
}
static void
flashreset(void)
{
Flash *f;
Flashtype *t;
char *e;
int bank;
for(bank = 0; bank < Nbanks; bank++){
f = malloc(sizeof(*f));
if(f == nil){
print("#F%d: can't allocate Flash data\n", bank);
return;
}
f->cmask = ~(ulong)0;
if(archflashreset(bank, f) < 0 || f->type == nil ||
f->addr == nil){
free(f);
return;
}
for(t = flash.types; t != nil; t = t->next)
if(strcmp(f->type, t->name) == 0)
break;
if(t == nil){
iprint("#F%d: no flash driver for type %s (addr %p)\n",
bank, f->type, f->addr);
free(f);
return;
}
f->reset = t->reset;
f->protect = 1;
if(f->reset(f) == 0){
flash.card[bank] = f;
iprint("#F%d: %s addr %#p len %lud width %d interleave %d\n",
// bank, f->type, PADDR(f->addr), f->size,
bank, f->type, f->addr, f->size,
f->width, f->interleave);
e = flashnewpart(f, "flash", 0, f->size);
if(e != nil)
panic("#F%d: couldn't init table: %s", bank, e);
}else
iprint("#F%d: %#p: reset failed (%s)\n",
bank, f->addr, f->type);
}
}
