struct sparc_phys_banks sp_banks[SPARC_PHYS_BANKS];
-unsigned long *sparc64_valid_addr_bitmap;
+unsigned long *sparc64_valid_addr_bitmap __read_mostly;
/* Ugly, but necessary... -DaveM */
unsigned long phys_base __read_mostly;
unsigned long kern_size __read_mostly;
unsigned long pfn_base __read_mostly;
-/* This is even uglier. We have a problem where the kernel may not be
- * located at phys_base. However, initial __alloc_bootmem() calls need to
- * be adjusted to be within the 4-8Megs that the kernel is mapped to, else
- * those page mappings wont work. Things are ok after inherit_prom_mappings
- * is called though. Dave says he'll clean this up some other time.
- * -- BenC
- */
-static unsigned long bootmap_base;
-
/* get_new_mmu_context() uses "cache + 1". */
DEFINE_SPINLOCK(ctx_alloc_lock);
unsigned long tlb_context_cache = CTX_FIRST_VERSION - 1;
#endif
bootmap_size = init_bootmem_node(NODE_DATA(0), bootmap_pfn, pfn_base, end_pfn);
- bootmap_base = bootmap_pfn << PAGE_SHIFT;
-
/* Now register the available physical memory with the
* allocator.
*/
void __init paging_init(void)
{
extern pmd_t swapper_pmd_dir[1024];
- unsigned long alias_base = kern_base + PAGE_OFFSET;
- unsigned long second_alias_page = 0;
- unsigned long pt, flags, end_pfn, pages_avail;
- unsigned long shift = alias_base - ((unsigned long)KERNBASE);
+ unsigned long end_pfn, pages_avail, shift;
unsigned long real_end;
set_bit(0, mmu_context_bmap);
+ shift = kern_base + PAGE_OFFSET - ((unsigned long)KERNBASE);
+
real_end = (unsigned long)_end;
if ((real_end > ((unsigned long)KERNBASE + 0x400000)))
bigkernel = 1;
-#ifdef CONFIG_BLK_DEV_INITRD
- if (sparc_ramdisk_image || sparc_ramdisk_image64)
- real_end = (PAGE_ALIGN(real_end) + PAGE_ALIGN(sparc_ramdisk_size));
-#endif
-
- /* We assume physical memory starts at some 4mb multiple,
- * if this were not true we wouldn't boot up to this point
- * anyways.
- */
- pt = kern_base | _PAGE_VALID | _PAGE_SZ4MB;
- pt |= _PAGE_CP | _PAGE_CV | _PAGE_P | _PAGE_L | _PAGE_W;
- local_irq_save(flags);
- if (tlb_type == spitfire) {
- __asm__ __volatile__(
- " stxa %1, [%0] %3\n"
- " stxa %2, [%5] %4\n"
- " membar #Sync\n"
- " flush %%g6\n"
- " nop\n"
- " nop\n"
- " nop\n"
- : /* No outputs */
- : "r" (TLB_TAG_ACCESS), "r" (alias_base), "r" (pt),
- "i" (ASI_DMMU), "i" (ASI_DTLB_DATA_ACCESS), "r" (61 << 3)
- : "memory");
- if (real_end >= KERNBASE + 0x340000) {
- second_alias_page = alias_base + 0x400000;
- __asm__ __volatile__(
- " stxa %1, [%0] %3\n"
- " stxa %2, [%5] %4\n"
- " membar #Sync\n"
- " flush %%g6\n"
- " nop\n"
- " nop\n"
- " nop\n"
- : /* No outputs */
- : "r" (TLB_TAG_ACCESS), "r" (second_alias_page), "r" (pt + 0x400000),
- "i" (ASI_DMMU), "i" (ASI_DTLB_DATA_ACCESS), "r" (60 << 3)
- : "memory");
- }
- } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
- __asm__ __volatile__(
- " stxa %1, [%0] %3\n"
- " stxa %2, [%5] %4\n"
- " membar #Sync\n"
- " flush %%g6\n"
- " nop\n"
- " nop\n"
- " nop\n"
- : /* No outputs */
- : "r" (TLB_TAG_ACCESS), "r" (alias_base), "r" (pt),
- "i" (ASI_DMMU), "i" (ASI_DTLB_DATA_ACCESS), "r" ((0<<16) | (13<<3))
- : "memory");
- if (real_end >= KERNBASE + 0x340000) {
- second_alias_page = alias_base + 0x400000;
- __asm__ __volatile__(
- " stxa %1, [%0] %3\n"
- " stxa %2, [%5] %4\n"
- " membar #Sync\n"
- " flush %%g6\n"
- " nop\n"
- " nop\n"
- " nop\n"
- : /* No outputs */
- : "r" (TLB_TAG_ACCESS), "r" (second_alias_page), "r" (pt + 0x400000),
- "i" (ASI_DMMU), "i" (ASI_DTLB_DATA_ACCESS), "r" ((0<<16) | (12<<3))
- : "memory");
- }
+ if ((real_end > ((unsigned long)KERNBASE + 0x800000))) {
+ prom_printf("paging_init: Kernel > 8MB, too large.\n");
+ prom_halt();
}
- local_irq_restore(flags);
-
- /* Now set kernel pgd to upper alias so physical page computations
+
+ /* Set kernel pgd to upper alias so physical page computations
* work.
*/
init_mm.pgd += ((shift) / (sizeof(pgd_t)));
pud_set(pud_offset(&swapper_pg_dir[0], 0),
swapper_pmd_dir + (shift / sizeof(pgd_t)));
- swapper_pgd_zero = pgd_val(init_mm.pgd[0]);
+ swapper_pgd_zero = pgd_val(swapper_pg_dir[0]);
/* Inherit non-locked OBP mappings. */
inherit_prom_mappings();
- /* Setup bootmem... */
- pages_avail = 0;
- last_valid_pfn = end_pfn = bootmem_init(&pages_avail);
-
/* Ok, we can use our TLB miss and window trap handlers safely.
* We need to do a quick peek here to see if we are on StarFire
* or not, so setup_tba can setup the IRQ globals correctly (it
inherit_locked_prom_mappings(1);
- /* We only created DTLB mapping of this stuff. */
- spitfire_flush_dtlb_nucleus_page(alias_base);
- if (second_alias_page)
- spitfire_flush_dtlb_nucleus_page(second_alias_page);
-
__flush_tlb_all();
+ /* Setup bootmem... */
+ pages_avail = 0;
+ last_valid_pfn = end_pfn = bootmem_init(&pages_avail);
+
{
unsigned long zones_size[MAX_NR_ZONES];
unsigned long zholes_size[MAX_NR_ZONES];
i = last_valid_pfn >> ((22 - PAGE_SHIFT) + 6);
i += 1;
- sparc64_valid_addr_bitmap = (unsigned long *)
- __alloc_bootmem(i << 3, SMP_CACHE_BYTES, bootmap_base);
+ sparc64_valid_addr_bitmap = (unsigned long *) alloc_bootmem(i << 3);
if (sparc64_valid_addr_bitmap == NULL) {
prom_printf("mem_init: Cannot alloc valid_addr_bitmap.\n");
prom_halt();
projects / karo-tx-linux.git / blobdiff