Pull acpica into release branch

[pandora-kernel.git] / arch / mips / mm / init.c

diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 4ee91c9..33f6e1c 100644 (file)
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -24,6 +24,8 @@
 #include <linux/bootmem.h>
 #include <linux/highmem.h>
 #include <linux/swap.h>
+#include <linux/proc_fs.h>
+#include <linux/pfn.h>
 
 #include <asm/bootinfo.h>
 #include <asm/cachectl.h>
@@ -53,7 +55,8 @@ unsigned long empty_zero_page, zero_page_mask;
  */
 unsigned long setup_zero_pages(void)
 {
-       unsigned long order, size;
+       unsigned int order;
+       unsigned long size;
        struct page *page;
 
        if (cpu_has_vce)
@@ -66,9 +69,9 @@ unsigned long setup_zero_pages(void)
                panic("Oh boy, that early out of memory?");
 
        page = virt_to_page(empty_zero_page);
+       split_page(page, order);
        while (page < virt_to_page(empty_zero_page + (PAGE_SIZE << order))) {
                SetPageReserved(page);
-               set_page_count(page, 1);
                page++;
        }
 
@@ -175,9 +178,6 @@ void __init paging_init(void)
        free_area_init(zones_size);
 }
 
-#define PFN_UP(x)      (((x) + PAGE_SIZE - 1) >> PAGE_SHIFT)
-#define PFN_DOWN(x)    ((x) >> PAGE_SHIFT)
-
 static inline int page_is_ram(unsigned long pagenr)
 {
        int i;
@@ -200,6 +200,11 @@ static inline int page_is_ram(unsigned long pagenr)
        return 0;
 }
 
+static struct kcore_list kcore_mem, kcore_vmalloc;
+#ifdef CONFIG_64BIT
+static struct kcore_list kcore_kseg0;
+#endif
+
 void __init mem_init(void)
 {
        unsigned long codesize, reservedpages, datasize, initsize;
@@ -222,7 +227,7 @@ void __init mem_init(void)
        for (tmp = 0; tmp < max_low_pfn; tmp++)
                if (page_is_ram(tmp)) {
                        ram++;
-                       if (PageReserved(mem_map+tmp))
+                       if (PageReserved(pfn_to_page(tmp)))
                                reservedpages++;
                }
 
@@ -238,7 +243,7 @@ void __init mem_init(void)
 #ifdef CONFIG_LIMITED_DMA
                set_page_address(page, lowmem_page_address(page));
 #endif
-               set_page_count(page, 1);
+               init_page_count(page);
                __free_page(page);
                totalhigh_pages++;
        }
@@ -249,6 +254,16 @@ void __init mem_init(void)
        datasize =  (unsigned long) &_edata - (unsigned long) &_etext;
        initsize =  (unsigned long) &__init_end - (unsigned long) &__init_begin;
 
+#ifdef CONFIG_64BIT
+       if ((unsigned long) &_text > (unsigned long) CKSEG0)
+               /* The -4 is a hack so that user tools don't have to handle
+                  the overflow.  */
+               kclist_add(&kcore_kseg0, (void *) CKSEG0, 0x80000000 - 4);
+#endif
+       kclist_add(&kcore_mem, __va(0), max_low_pfn << PAGE_SHIFT);
+       kclist_add(&kcore_vmalloc, (void *)VMALLOC_START,
+                  VMALLOC_END-VMALLOC_START);
+
        printk(KERN_INFO "Memory: %luk/%luk available (%ldk kernel code, "
               "%ldk reserved, %ldk data, %ldk init, %ldk highmem)\n",
               (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
@@ -261,6 +276,20 @@ void __init mem_init(void)
 }
 #endif /* !CONFIG_NEED_MULTIPLE_NODES */
 
+void free_init_pages(char *what, unsigned long begin, unsigned long end)
+{
+       unsigned long addr;
+
+       for (addr = begin; addr < end; addr += PAGE_SIZE) {
+               ClearPageReserved(virt_to_page(addr));
+               init_page_count(virt_to_page(addr));
+               memset((void *)addr, 0xcc, PAGE_SIZE);
+               free_page(addr);
+               totalram_pages++;
+       }
+       printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
+}
+
 #ifdef CONFIG_BLK_DEV_INITRD
 void free_initrd_mem(unsigned long start, unsigned long end)
 {
@@ -269,16 +298,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
        start = (unsigned long)phys_to_virt(CPHYSADDR(start));
        end = (unsigned long)phys_to_virt(CPHYSADDR(end));
 #endif
-       if (start < end)
-               printk(KERN_INFO "Freeing initrd memory: %ldk freed\n",
-                      (end - start) >> 10);
-
-       for (; start < end; start += PAGE_SIZE) {
-               ClearPageReserved(virt_to_page(start));
-               set_page_count(virt_to_page(start), 1);
-               free_page(start);
-               totalram_pages++;
-       }
+       free_init_pages("initrd memory", start, end);
 }
 #endif
 
@@ -286,24 +306,17 @@ extern unsigned long prom_free_prom_memory(void);
 
 void free_initmem(void)
 {
-       unsigned long addr, page, freed;
+       unsigned long start, end, freed;
 
        freed = prom_free_prom_memory();
+       if (freed)
+               printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
 
-       addr = (unsigned long) &__init_begin;
-       while (addr < (unsigned long) &__init_end) {
+       start = (unsigned long)(&__init_begin);
+       end = (unsigned long)(&__init_end);
 #ifdef CONFIG_64BIT
-               page = PAGE_OFFSET | CPHYSADDR(addr);
-#else
-               page = addr;
+       start = PAGE_OFFSET | CPHYSADDR(start);
+       end = PAGE_OFFSET | CPHYSADDR(end);
 #endif
-               ClearPageReserved(virt_to_page(page));
-               set_page_count(virt_to_page(page), 1);
-               free_page(page);
-               totalram_pages++;
-               freed += PAGE_SIZE;
-               addr += PAGE_SIZE;
-       }
-       printk(KERN_INFO "Freeing unused kernel memory: %ldk freed\n",
-              freed >> 10);
+       free_init_pages("unused kernel memory", start, end);
 }