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Switch sparc64 to ofmem (Igor Kovalenko)

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Initialize ofmem at startup.
Switch malloc/realloc/free to use ofmem.
Implement runtime migration of startup mappings to ofmem.
Implement mmu miss handlers to install tlb entries based on ofmem
translations list.


git-svn-id: svn://coreboot.org/openbios/trunk/openbios-devel@517 f158a5a8-5612-0410-a976-696ce0be7e32
This commit is contained in:
Blue Swirl
2009-07-31 11:16:24 +00:00
parent e5b34330ee
commit ffd20b950d
4 changed files with 237 additions and 186 deletions
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311
arch/sparc64/lib.c
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@@ -34,32 +34,19 @@ int printk( const char *fmt, ... )
return i;
}
#define MEMSIZE ((128 + 256 + 512) * 1024)
static char memory[MEMSIZE];
static void *memptr=memory;
static int memsize=MEMSIZE;
void *malloc(int size)
{
void *ret=(void *)0;
return ofmem_malloc(size);
}
if( !size )
return NULL;
size = (size + 7) & ~7;
if(memsize>=size) {
memsize-=size;
ret=memptr;
memptr = (void *)((unsigned long)memptr + size);
}
return ret;
void* realloc( void *ptr, size_t size )
{
return ofmem_realloc(ptr, size);
}
void free(void *ptr)
{
/* Nothing yet */
ofmem_free(ptr);
}
#define PAGE_SIZE_4M (4 * 1024 * 1024)
@@ -84,50 +71,44 @@ mmu_close(void)
void ofmem_walk_boot_map(translation_entry_cb cb)
{
}
static int
spitfire_translate(unsigned long virt, unsigned long *p_phys,
unsigned long *p_data, unsigned long *p_size)
{
unsigned long phys, tag, data, mask, size;
unsigned long phys, virt, size, mode, data, mask;
unsigned int i;
for (i = 0; i < 64; i++) {
data = spitfire_get_dtlb_data(i);
if (data & 0x8000000000000000ULL) { // Valid entry?
if (data & SPITFIRE_TTE_VALID) {
switch ((data >> 61) & 3) {
default:
case 0x0: // 8k
case 0x0: /* 8k */
mask = 0xffffffffffffe000ULL;
size = PAGE_SIZE_8K;
break;
case 0x1: // 64k
case 0x1: /* 64k */
mask = 0xffffffffffff0000ULL;
size = PAGE_SIZE_64K;
break;
case 0x2: // 512k
case 0x2: /* 512k */
mask = 0xfffffffffff80000ULL;
size = PAGE_SIZE_512K;
break;
case 0x3: // 4M
case 0x3: /* 4M */
mask = 0xffffffffffc00000ULL;
size = PAGE_SIZE_4M;
break;
}
tag = spitfire_get_dtlb_tag(i);
if ((virt & mask) == (tag & mask)) {
phys = data & mask & 0x000001fffffff000ULL;
phys |= virt & ~mask;
*p_phys = phys;
*p_data = data & 0xfff;
*p_size = size;
return -1;
}
virt = spitfire_get_dtlb_tag(i);
virt &= mask;
/* extract 41bit physical address */
phys = data & 0x000001fffffff000ULL;
phys &= mask;
mode = data & 0xfff;
cb(phys, virt, size, mode);
}
}
return 0;
}
/*
@@ -137,18 +118,21 @@ spitfire_translate(unsigned long virt, unsigned long *p_phys,
static void
mmu_translate(void)
{
unsigned long virt, phys, data, size;
ucell virt, phys, mode;
virt = POP();
if (spitfire_translate(virt, &phys, &data, &size)) {
PUSH(phys & 0xffffffff);
PUSH(phys >> 32);
PUSH(data);
PUSH(-1);
return;
phys = ofmem_translate(virt, &mode);
if (phys != -1UL) {
PUSH(phys & 0xffffffff);
PUSH(phys >> 32);
PUSH(mode);
PUSH(-1);
}
else {
PUSH(0);
}
PUSH(0);
}
static void
@@ -218,13 +202,15 @@ itlb_load(void)
}
static void
map_pages(unsigned long virt, unsigned long size, unsigned long phys,
unsigned long mode)
map_pages(unsigned long phys, unsigned long virt,
unsigned long size, unsigned long mode)
{
unsigned long tte_data, currsize;
unsigned long tte_data, currsize;
size = (size + PAGE_MASK_8K) & ~PAGE_MASK_8K;
while (size >= PAGE_SIZE_8K) {
/* aligned to 8k page */
size = (size + PAGE_MASK_8K) & ~PAGE_MASK_8K;
while (size > 0) {
currsize = size;
if (currsize >= PAGE_SIZE_4M &&
(virt & PAGE_MASK_4M) == 0 &&
@@ -248,8 +234,9 @@ map_pages(unsigned long virt, unsigned long size, unsigned long phys,
tte_data |= phys | mode | SPITFIRE_TTE_VALID;
dtlb_load2(virt, tte_data);
itlb_load2(virt, tte_data);
dtlb_load2(virt, tte_data);
size -= currsize;
phys += currsize;
virt += currsize;
@@ -268,7 +255,7 @@ void ofmem_map_pages(ucell phys, ucell virt, ucell size, ucell mode)
static void
mmu_map(void)
{
unsigned long virt, size, mode, phys;
ucell virt, size, mode, phys;
mode = POP();
size = POP();
@@ -276,7 +263,8 @@ mmu_map(void)
phys = POP();
phys <<= 32;
phys |= POP();
map_pages(virt, size, phys, mode);
ofmem_map(phys, virt, size, mode);
}
static void
@@ -294,22 +282,19 @@ dtlb_demap(unsigned long vaddr)
}
static void
unmap_pages(unsigned long virt, unsigned long size)
unmap_pages(ucell virt, ucell size)
{
unsigned long phys, data;
ucell va;
unsigned long currsize;
/* align address to 8k */
virt &= ~PAGE_MASK_8K;
// align size
/* align size to 8k */
size = (size + PAGE_MASK_8K) & ~PAGE_MASK_8K;
while (spitfire_translate(virt, &phys, &data, &currsize)) {
itlb_demap(virt & ~0x1fffULL);
dtlb_demap(virt & ~0x1fffULL);
size -= currsize;
virt += currsize;
for (va = virt; va < virt + size; va += PAGE_SIZE_8K) {
itlb_demap(va);
dtlb_demap(va);
}
}
@@ -325,11 +310,11 @@ void ofmem_unmap_pages(ucell virt, ucell size)
static void
mmu_unmap(void)
{
unsigned long virt, size;
ucell virt, size;
size = POP();
virt = POP();
unmap_pages(virt, size);
ofmem_unmap(virt, size);
}
/*
@@ -339,13 +324,23 @@ mmu_unmap(void)
static void
mmu_claim(void)
{
unsigned long virt, size, align;
ucell virt=-1UL, size, align;
align = POP();
size = POP();
virt = POP();
printk("claim virt = %lx size = %lx align = %lx\n", virt, size, align);
PUSH(virt); // XXX
if (!align) {
virt = POP();
}
printk("claim virt=" FMT_ucellx " size=" FMT_ucellx " align=" FMT_ucellx
"\n",
virt, size, align);
virt = ofmem_claim_virt(virt, size, align);
printk("claimed virt=" FMT_ucellx "\n", virt);
PUSH(virt);
}
/*
@@ -355,14 +350,63 @@ mmu_claim(void)
static void
mmu_release(void)
{
unsigned long virt, size;
ucell virt, size;
size = POP();
virt = POP();
printk("release virt = %lx size = %lx\n", virt, size);
// XXX
printk("release virt=" FMT_ucellx " size=" FMT_ucellx "\n", virt, size);
ofmem_release(virt, size);
}
/* ( phys size align --- base ) */
static void
mem_claim( void )
{
ucell phys=-1UL, size, align;
align = POP();
size = POP();
if (!align) {
phys = POP();
phys <<= 32;
phys |= POP();
}
printk("mem_claim phys=" FMT_ucellx " size=" FMT_ucellx
" align=" FMT_ucellx "\n",
phys, size, align);
phys = ofmem_claim_phys(phys, size, align);
printk("ofmem_claim_phys result phys=" FMT_ucellx "\n", phys);
ofmem_map(phys, phys, size, -1);
PUSH(phys >> 32);
PUSH(phys & 0xffffffffUL);
}
/* ( phys size --- ) */
static void
mem_release( void )
{
ucell phys, size;
size = POP();
phys = POP();
printk("release virt=" FMT_ucellx " size=" FMT_ucellx "\n", phys, size);
ofmem_release(phys, size);
}
DECLARE_NODE(memory, INSTALL_OPEN, 0, "/memory");
NODE_METHODS( memory ) = {
{ "claim", mem_claim },
{ "release", mem_release },
};
DECLARE_UNNAMED_NODE(mmu, INSTALL_OPEN, 0);
NODE_METHODS(mmu) = {
@@ -381,7 +425,10 @@ void ob_mmu_init(const char *cpuname, uint64_t ram_size)
{
char nodebuff[256];
// MMU node
/* memory node */
REGISTER_NODE_METHODS(memory, "/memory");
/* MMU node */
snprintf(nodebuff, sizeof(nodebuff), "/%s", cpuname);
push_str(nodebuff);
fword("find-device");
@@ -397,6 +444,8 @@ void ob_mmu_init(const char *cpuname, uint64_t ram_size)
REGISTER_NODE_METHODS(mmu, nodebuff);
ofmem_register(find_dev("/memory"), find_dev("/virtual-memory"));
push_str("/chosen");
fword("find-device");
@@ -409,7 +458,7 @@ void ob_mmu_init(const char *cpuname, uint64_t ram_size)
push_str("/memory");
fword("find-device");
// All memory: 0 to RAM_size
/* All memory: 0 to RAM_size */
PUSH(0);
fword("encode-int");
PUSH(0);
@@ -424,108 +473,6 @@ void ob_mmu_init(const char *cpuname, uint64_t ram_size)
push_str("reg");
fword("property");
// Available memory: 0 to va2pa(_start)
PUSH(0);
fword("encode-int");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH((va2pa((unsigned long)&_data) - 8192) >> 32);
fword("encode-int");
fword("encode+");
PUSH((va2pa((unsigned long)&_data) - 8192) & 0xffffffff);
fword("encode-int");
fword("encode+");
push_str("available");
fword("property");
// XXX
// Translations
push_str("/virtual-memory");
fword("find-device");
// 0 to 16M: 1:1
PUSH(0);
fword("encode-int");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH(16 * 1024 * 1024);
fword("encode-int");
fword("encode+");
PUSH(0x80000000);
fword("encode-int");
fword("encode+");
PUSH(0x00000036);
fword("encode-int");
fword("encode+");
// _start to _data: ROM used
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH((unsigned long)&_start);
fword("encode-int");
fword("encode+");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH((unsigned long)&_data - (unsigned long)&_start);
fword("encode-int");
fword("encode+");
PUSH(0x800001ff);
fword("encode-int");
fword("encode+");
PUSH(0xf0000074);
fword("encode-int");
fword("encode+");
// _data to _end: end of RAM
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH((unsigned long)&_data);
fword("encode-int");
fword("encode+");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH((unsigned long)&_data - (unsigned long)&_start);
fword("encode-int");
fword("encode+");
PUSH(((va2pa((unsigned long)&_data) - 8192) >> 32) | 0x80000000);
fword("encode-int");
fword("encode+");
PUSH(((va2pa((unsigned long)&_data) - 8192) & 0xffffffff) | 0x36);
fword("encode-int");
fword("encode+");
// VGA buffer (128k): 1:1
PUSH(0x1ff);
fword("encode-int");
fword("encode+");
PUSH(0x004a0000);
fword("encode-int");
fword("encode+");
PUSH(0);
fword("encode-int");
fword("encode+");
PUSH(128 * 1024);
fword("encode-int");
fword("encode+");
PUSH(0x800001ff);
fword("encode-int");
fword("encode+");
PUSH(0x004a0076);
fword("encode-int");
fword("encode+");
push_str("translations");
fword("property");
push_str("/openprom/client-services");
fword("find-device");
bind_func("claim", mmu_claim);