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-rw-r--r--arch/microblaze/mm/pgtable.c54
1 files changed, 17 insertions, 37 deletions
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index 63a6fd07c48..59bf2335a4c 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -42,6 +42,7 @@
unsigned long ioremap_base;
unsigned long ioremap_bot;
+EXPORT_SYMBOL(ioremap_bot);
/* The maximum lowmem defaults to 768Mb, but this can be configured to
* another value.
@@ -154,31 +155,13 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
err = 0;
set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
__pgprot(flags)));
- if (mem_init_done)
+ if (unlikely(mem_init_done))
flush_HPTE(0, va, pmd_val(*pd));
/* flush_HPTE(0, va, pg); */
}
return err;
}
-void __init adjust_total_lowmem(void)
-{
-/* TBD */
-#if 0
- unsigned long max_low_mem = MAX_LOW_MEM;
-
- if (total_lowmem > max_low_mem) {
- total_lowmem = max_low_mem;
-#ifndef CONFIG_HIGHMEM
- printk(KERN_INFO "Warning, memory limited to %ld Mb, use "
- "CONFIG_HIGHMEM to reach %ld Mb\n",
- max_low_mem >> 20, total_memory >> 20);
- total_memory = total_lowmem;
-#endif /* CONFIG_HIGHMEM */
- }
-#endif
-}
-
/*
* Map in all of physical memory starting at CONFIG_KERNEL_START.
*/
@@ -206,24 +189,6 @@ void __init mapin_ram(void)
/* is x a power of 2? */
#define is_power_of_2(x) ((x) != 0 && (((x) & ((x) - 1)) == 0))
-/*
- * Set up a mapping for a block of I/O.
- * virt, phys, size must all be page-aligned.
- * This should only be called before ioremap is called.
- */
-void __init io_block_mapping(unsigned long virt, phys_addr_t phys,
- unsigned int size, int flags)
-{
- int i;
-
- if (virt > CONFIG_KERNEL_START && virt < ioremap_bot)
- ioremap_bot = ioremap_base = virt;
-
- /* Put it in the page tables. */
- for (i = 0; i < size; i += PAGE_SIZE)
- map_page(virt + i, phys + i, flags);
-}
-
/* Scan the real Linux page tables and return a PTE pointer for
* a virtual address in a context.
* Returns true (1) if PTE was found, zero otherwise. The pointer to
@@ -274,3 +239,18 @@ unsigned long iopa(unsigned long addr)
return pa;
}
+
+__init_refok pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
+ unsigned long address)
+{
+ pte_t *pte;
+ if (mem_init_done) {
+ pte = (pte_t *)__get_free_page(GFP_KERNEL |
+ __GFP_REPEAT | __GFP_ZERO);
+ } else {
+ pte = (pte_t *)early_get_page();
+ if (pte)
+ clear_page(pte);
+ }
+ return pte;
+}