7 files changed, 62 insertions, 21 deletions

diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index ada249bf9779..ce10e2b1b902 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -202,7 +202,7 @@ adjust_total_lowmem(void)
                 cam_max_size = max_lowmem_size;
 
         /* adjust lowmem size to max_lowmem_size */
-        ram = min(max_lowmem_size, total_lowmem);
+        ram = min(max_lowmem_size, (phys_addr_t)total_lowmem);
 
         /* Calculate CAM values */
         __cam0 = 1UL << 2 * (__ilog2(ram) / 2);
diff --git a/arch/powerpc/mm/hash_low_32.S b/arch/powerpc/mm/hash_low_32.S
index e10d76a860d3..ddeaf9e38ad5 100644
--- a/arch/powerpc/mm/hash_low_32.S
+++ b/arch/powerpc/mm/hash_low_32.S
@@ -191,7 +191,7 @@ _GLOBAL(add_hash_page)
         add     r3,r3,r0                /* note create_hpte trims to 24 bits */
 
 #ifdef CONFIG_SMP
-        rlwinm  r8,r1,0,0,18            /* use cpu number to make tag */
+        rlwinm  r8,r1,0,0,(31-THREAD_SHIFT) /* use cpu number to make tag */
         lwz     r8,TI_CPU(r8)           /* to go in mmu_hash_lock */
         oris    r8,r8,12
 #endif /* CONFIG_SMP */
@@ -526,7 +526,7 @@ _GLOBAL(flush_hash_pages)
 #ifdef CONFIG_SMP
         addis   r9,r7,mmu_hash_lock@ha
         addi    r9,r9,mmu_hash_lock@l
-        rlwinm  r8,r1,0,0,18
+        rlwinm  r8,r1,0,0,(31-THREAD_SHIFT)
         add     r8,r8,r7
         lwz     r8,TI_CPU(r8)
         oris    r8,r8,9
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 47325f23c51f..1952b4d3fa7f 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -59,7 +59,10 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 unsigned long total_memory;
 unsigned long total_lowmem;
 
-phys_addr_t memstart_addr;
+phys_addr_t memstart_addr = (phys_addr_t)~0ull;
+EXPORT_SYMBOL(memstart_addr);
+phys_addr_t kernstart_addr;
+EXPORT_SYMBOL(kernstart_addr);
 phys_addr_t lowmem_end_addr;
 
 int boot_mapsize;
@@ -68,14 +71,6 @@ unsigned long agp_special_page;
 EXPORT_SYMBOL(agp_special_page);
 #endif
 
-#ifdef CONFIG_HIGHMEM
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-EXPORT_SYMBOL(kmap_prot);
-EXPORT_SYMBOL(kmap_pte);
-#endif
-
 void MMU_init(void);
 
 /* XXX should be in current.h  -- paulus */
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 698bd000f98b..c5ac532a0161 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -72,7 +72,8 @@
 #warning TASK_SIZE is smaller than it needs to be.
 #endif
 
-phys_addr_t memstart_addr;
+phys_addr_t memstart_addr = ~0;
+phys_addr_t kernstart_addr;
 
 void free_initmem(void)
 {
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index 16def4dcff6d..5ccb579b81e4 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -45,6 +45,7 @@
 #include <asm/tlb.h>
 #include <asm/sections.h>
 #include <asm/vdso.h>
+#include <asm/fixmap.h>
 
 #include "mmu_decl.h"
 
@@ -57,6 +58,20 @@ int init_bootmem_done;
 int mem_init_done;
 unsigned long memory_limit;
 
+#ifdef CONFIG_HIGHMEM
+pte_t *kmap_pte;
+pgprot_t kmap_prot;
+
+EXPORT_SYMBOL(kmap_prot);
+EXPORT_SYMBOL(kmap_pte);
+
+static inline pte_t *virt_to_kpte(unsigned long vaddr)
+{
+        return pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr),
+                        vaddr), vaddr), vaddr);
+}
+#endif
+
 int page_is_ram(unsigned long pfn)
 {
         unsigned long paddr = (pfn << PAGE_SHIFT);
@@ -216,7 +231,7 @@ void __init do_init_bootmem(void)
         unsigned long total_pages;
         int boot_mapsize;
 
-        max_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
+        max_low_pfn = max_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
         total_pages = (lmb_end_of_DRAM() - memstart_addr) >> PAGE_SHIFT;
 #ifdef CONFIG_HIGHMEM
         total_pages = total_lowmem >> PAGE_SHIFT;
@@ -232,7 +247,8 @@ void __init do_init_bootmem(void)
 
         start = lmb_alloc(bootmap_pages << PAGE_SHIFT, PAGE_SIZE);
 
-        boot_mapsize = init_bootmem(start >> PAGE_SHIFT, total_pages);
+        min_low_pfn = MEMORY_START >> PAGE_SHIFT;
+        boot_mapsize = init_bootmem_node(NODE_DATA(0), start >> PAGE_SHIFT, min_low_pfn, max_low_pfn);
 
         /* Add active regions with valid PFNs */
         for (i = 0; i < lmb.memory.cnt; i++) {
@@ -310,14 +326,19 @@ void __init paging_init(void)
         unsigned long top_of_ram = lmb_end_of_DRAM();
         unsigned long max_zone_pfns[MAX_NR_ZONES];
 
+#ifdef CONFIG_PPC32
+        unsigned long v = __fix_to_virt(__end_of_fixed_addresses - 1);
+        unsigned long end = __fix_to_virt(FIX_HOLE);
+
+        for (; v < end; v += PAGE_SIZE)
+                map_page(v, 0, 0); /* XXX gross */
+#endif
+
 #ifdef CONFIG_HIGHMEM
         map_page(PKMAP_BASE, 0, 0);     /* XXX gross */
-        pkmap_page_table = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k
-                        (PKMAP_BASE), PKMAP_BASE), PKMAP_BASE), PKMAP_BASE);
-        map_page(KMAP_FIX_BEGIN, 0, 0); /* XXX gross */
-        kmap_pte = pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k
-                        (KMAP_FIX_BEGIN), KMAP_FIX_BEGIN), KMAP_FIX_BEGIN),
-                         KMAP_FIX_BEGIN);
+        pkmap_page_table = virt_to_kpte(PKMAP_BASE);
+
+        kmap_pte = virt_to_kpte(__fix_to_virt(FIX_KMAP_BEGIN));
         kmap_prot = PAGE_KERNEL;
 #endif /* CONFIG_HIGHMEM */
 
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 1efd631211ef..dc704da363eb 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -18,6 +18,7 @@
 #include <linux/cpu.h>
 #include <linux/notifier.h>
 #include <linux/lmb.h>
+#include <linux/of.h>
 #include <asm/sparsemem.h>
 #include <asm/prom.h>
 #include <asm/system.h>
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 64c44bcc68de..80d1babb230d 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -29,6 +29,7 @@
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
+#include <asm/fixmap.h>
 #include <asm/io.h>
 
 #include "mmu_decl.h"
@@ -387,3 +388,25 @@ void kernel_map_pages(struct page *page, int numpages, int enable)
         change_page_attr(page, numpages, enable ? PAGE_KERNEL : __pgprot(0));
 }
 #endif /* CONFIG_DEBUG_PAGEALLOC */
+
+static int fixmaps;
+unsigned long FIXADDR_TOP = 0xfffff000;
+EXPORT_SYMBOL(FIXADDR_TOP);
+
+void __set_fixmap (enum fixed_addresses idx, phys_addr_t phys, pgprot_t flags)
+{
+        unsigned long address = __fix_to_virt(idx);
+
+        if (idx >= __end_of_fixed_addresses) {
+                BUG();
+                return;
+        }
+
+        map_page(address, phys, flags);
+        fixmaps++;
+}
+
+void __this_fixmap_does_not_exist(void)
+{
+        WARN_ON(1);
+}