static void __init
sal_desc_entry_point (void *p)
{
struct ia64_sal_desc_entry_point *ep = p;
ia64_pal_handler_init(__va(ep->pal_proc));
ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
}
void __init early_sn_setup(void)
{
efi_system_table_t *efi_systab;
efi_config_table_t *config_tables;
struct ia64_sal_systab *sal_systab;
struct ia64_sal_desc_entry_point *ep;
char *p;
int i, j;
/*
* Parse enough of the SAL tables to locate the SAL entry point. Since, console
* IO on SN2 is done via SAL calls, early_printk won't work without this.
*
* This code duplicates some of the ACPI table parsing that is in efi.c & sal.c.
* Any changes to those file may have to be made hereas well.
*/
efi_systab = (efi_system_table_t *) __va(ia64_boot_param->efi_systab);
config_tables = __va(efi_systab->tables);
for (i = 0; i < efi_systab->nr_tables; i++) {
if (efi_guidcmp(config_tables[i].guid, SAL_SYSTEM_TABLE_GUID) ==
0) {
sal_systab = __va(config_tables[i].table);
p = (char *)(sal_systab + 1);
for (j = 0; j < sal_systab->entry_count; j++) {
if (*p == SAL_DESC_ENTRY_POINT) {
ep = (struct ia64_sal_desc_entry_point
*)p;
ia64_sal_handler_init(__va
(ep->sal_proc),
__va(ep->gp));
return;
}
p += SAL_DESC_SIZE(*p);
}
}
}
/* Uh-oh, SAL not available?? */
printk(KERN_ERR "failed to find SAL entry point\n");
}
void __init
ia64_sal_init (struct ia64_sal_systab *systab)
{
unsigned long min, max;
char *p;
struct ia64_sal_desc_entry_point *ep;
int i;
if (!systab) {
printk("Hmm, no SAL System Table.\n");
return;
}
if (strncmp(systab->signature, "SST_", 4) != 0)
printk("bad signature in system table!");
/*
* revisions are coded in BCD, so %x does the job for us
*/
printk("SAL v%x.%02x: oem=%.32s, product=%.32s\n",
systab->sal_rev_major, systab->sal_rev_minor,
systab->oem_id, systab->product_id);
min = ~0UL;
max = 0;
p = (char *) (systab + 1);
for (i = 0; i < systab->entry_count; i++) {
/*
* The first byte of each entry type contains the type desciptor.
*/
switch (*p) {
case SAL_DESC_ENTRY_POINT:
ep = (struct ia64_sal_desc_entry_point *) p;
printk("SAL: entry: pal_proc=0x%lx, sal_proc=0x%lx\n",
ep->pal_proc, ep->sal_proc);
ia64_pal_handler_init(__va(ep->pal_proc));
ia64_sal_handler_init(__va(ep->sal_proc), __va(ep->gp));
break;
case SAL_DESC_PTC:
ia64_ptc_domain_info = (ia64_sal_desc_ptc_t *)p;
break;
case SAL_DESC_AP_WAKEUP:
#ifdef CONFIG_SMP
{
struct ia64_sal_desc_ap_wakeup *ap = (void *) p;
switch (ap->mechanism) {
case IA64_SAL_AP_EXTERNAL_INT:
ap_wakeup_vector = ap->vector;
printk("SAL: AP wakeup using external interrupt "
"vector 0x%lx\n", ap_wakeup_vector);
break;
default:
printk("SAL: AP wakeup mechanism unsupported!\n");
break;
}
break;
}
#endif
case SAL_DESC_PLATFORM_FEATURE:
{
struct ia64_sal_desc_platform_feature *pf = (void *) p;
printk("SAL: Platform features ");
if (pf->feature_mask & (1 << 0))
printk("BusLock ");
if (pf->feature_mask & (1 << 1)) {
printk("IRQ_Redirection ");
#ifdef CONFIG_SMP
if (no_int_routing)
smp_int_redirect &= ~SMP_IRQ_REDIRECTION;
else
smp_int_redirect |= SMP_IRQ_REDIRECTION;
#endif
}
if (pf->feature_mask & (1 << 2)) {
printk("IPI_Redirection ");
#ifdef CONFIG_SMP
if (no_int_routing)
smp_int_redirect &= ~SMP_IPI_REDIRECTION;
else
smp_int_redirect |= SMP_IPI_REDIRECTION;
#endif
}
printk("\n");
break;
}
}
p += SAL_DESC_SIZE(*p);
}
}
