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Implement pgmap@ for SPARC64 since it is required for OpenSolaris.

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Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@siriusit.co.uk>


git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@877 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Mark Cave-Ayland
2010-10-03 09:37:13 +00:00
committed by Mark Cave-Ayland
parent a54cc09377
commit 630c56c162
1 changed files with 74 additions and 61 deletions
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135
arch/sparc64/lib.c
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@@ -135,6 +135,43 @@ mmu_translate(void)
}
}
/*
* D5.3 pgmap@ ( va -- tte )
*/
static void
pgmap_fetch(void)
{
translation_t *t = *g_ofmem_translations;
unsigned long va, tte_data;
va = POP();
/* Search the ofmem linked list for this virtual address */
while (t != NULL) {
/* Find the correct range */
if (va >= t->virt && va < (t->virt + t->size)) {
/* valid tte, 8k size */
tte_data = 0x8000000000000000UL;
/* mix in phys address mode */
tte_data |= t->mode;
/* mix in page physical address = t->phys + offset */
tte_data |= t->phys + (va - t->virt);
/* return tte_data */
PUSH(tte_data);
return;
}
t = t->next;
}
/* If we get here, there was no entry */
PUSH(0);
}
static void
dtlb_load2(unsigned long vaddr, unsigned long tte_data)
{
@@ -185,7 +222,6 @@ void
dtlb_miss_handler(void)
{
unsigned long faultva, tte_data = 0;
translation_t *t = *g_ofmem_translations;
/* Grab fault address from MMU and round to nearest 8k page */
faultva = dtlb_faultva();
@@ -193,30 +229,17 @@ dtlb_miss_handler(void)
faultva <<= 13;
/* Search the ofmem linked list for this virtual address */
while (t != NULL) {
/* Find the correct range */
if (faultva >= t->virt && faultva < (t->virt + t->size)) {
PUSH(faultva);
pgmap_fetch();
tte_data = POP();
/* valid tte, 8k size */
tte_data = 0x8000000000000000UL;
/* mix in phys address mode */
tte_data |= t->mode;
/* mix in page physical address = t->phys + offset */
tte_data |= t->phys + (faultva - t->virt);
/* Update MMU */
dtlb_load2(faultva, tte_data);
return;
}
t = t->next;
if (tte_data) {
/* Update MMU */
dtlb_load2(faultva, tte_data);
} else {
/* If we got here, there was no translation so fail */
bug();
}
/* If we got here, there was no translation so fail */
bug();
}
static void
@@ -238,6 +261,20 @@ itlb_load3(unsigned long vaddr, unsigned long tte_data,
"r" (tte_data), "r" (tte_index << 3), "i" (ASI_ITLB_DATA_ACCESS));
}
/*
( index tte_data vaddr -- ? )
*/
static void
itlb_load(void)
{
unsigned long vaddr, tte_data, idx;
vaddr = POP();
tte_data = POP();
idx = POP();
itlb_load3(vaddr, tte_data, idx);
}
static unsigned long
itlb_faultva(void)
{
@@ -255,7 +292,6 @@ void
itlb_miss_handler(void)
{
unsigned long faultva, tte_data = 0;
translation_t *t = *g_ofmem_translations;
/* Grab fault address from MMU and round to nearest 8k page */
faultva = itlb_faultva();
@@ -263,45 +299,17 @@ itlb_miss_handler(void)
faultva <<= 13;
/* Search the ofmem linked list for this virtual address */
while (t != NULL) {
/* Find the correct range */
if (faultva >= t->virt && faultva < (t->virt + t->size)) {
PUSH(faultva);
pgmap_fetch();
tte_data = POP();
/* valid tte, 8k size */
tte_data = 0x8000000000000000UL;
/* mix in phys address mode */
tte_data |= t->mode;
/* mix in page physical address = t->phys + offset */
tte_data |= t->phys + (faultva - t->virt);
/* Update MMU */
itlb_load2(faultva, tte_data);
return;
}
t = t->next;
if (tte_data) {
/* Update MMU */
itlb_load2(faultva, tte_data);
} else {
/* If we got here, there was no translation so fail */
bug();
}
/* If we got here, there was no translation so fail */
bug();
}
/*
( index tte_data vaddr -- ? )
*/
static void
itlb_load(void)
{
unsigned long vaddr, tte_data, idx;
vaddr = POP();
tte_data = POP();
idx = POP();
itlb_load3(vaddr, tte_data, idx);
}
static void
@@ -604,4 +612,9 @@ void ob_mmu_init(const char *cpuname, uint64_t ram_size)
fword("find-device");
bind_func("cif-claim", ciface_claim);
bind_func("cif-release", ciface_release);
/* Other MMU functions */
PUSH(0);
fword("active-package!");
bind_func("pgmap@", pgmap_fetch);
}