14 files changed, 97 insertions, 432 deletions

diff --git a/arch/powerpc/mm/40x_mmu.c b/arch/powerpc/mm/40x_mmu.c
index 3899ea97fbdf..cecbbc76f624 100644
--- a/arch/powerpc/mm/40x_mmu.c
+++ b/arch/powerpc/mm/40x_mmu.c
@@ -97,7 +97,7 @@ unsigned long __init mmu_mapin_ram(void)
         phys_addr_t p;
 
         v = KERNELBASE;
-        p = PPC_MEMSTART;
+        p = 0;
         s = total_lowmem;
 
         if (__map_without_ltlbs)
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index 04dc08798d3d..953fb919eb06 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -67,7 +67,7 @@ unsigned long __init mmu_mapin_ram(void)
 
         /* Pin in enough TLBs to cover any lowmem not covered by the
          * initial 256M mapping established in head_44x.S */
-        for (addr = PPC_PIN_SIZE; addr < total_lowmem;
+        for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
              addr += PPC_PIN_SIZE)
                 ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);
 
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index 41649a5d3602..1c00e0196f6c 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -6,7 +6,7 @@ ifeq ($(CONFIG_PPC64),y)
 EXTRA_CFLAGS    += -mno-minimal-toc
 endif
 
-obj-y                           := fault.o mem.o lmb.o \
+obj-y                           := fault.o mem.o \
                                    init_$(CONFIG_WORD_SIZE).o \
                                    pgtable_$(CONFIG_WORD_SIZE).o \
                                    mmu_context_$(CONFIG_WORD_SIZE).o
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c
index c93a966b7e4b..ada249bf9779 100644
--- a/arch/powerpc/mm/fsl_booke_mmu.c
+++ b/arch/powerpc/mm/fsl_booke_mmu.c
@@ -49,18 +49,15 @@
 #include <asm/mmu.h>
 #include <asm/uaccess.h>
 #include <asm/smp.h>
-#include <asm/bootx.h>
 #include <asm/machdep.h>
 #include <asm/setup.h>
 
+#include "mmu_decl.h"
+
 extern void loadcam_entry(unsigned int index);
 unsigned int tlbcam_index;
 unsigned int num_tlbcam_entries;
 static unsigned long __cam0, __cam1, __cam2;
-extern unsigned long total_lowmem;
-extern unsigned long __max_low_memory;
-extern unsigned long __initial_memory_limit;
-#define MAX_LOW_MEM     CONFIG_LOWMEM_SIZE
 
 #define NUM_TLBCAMS     (16)
 
@@ -165,15 +162,15 @@ void invalidate_tlbcam_entry(int index)
 void __init cam_mapin_ram(unsigned long cam0, unsigned long cam1,
                 unsigned long cam2)
 {
-        settlbcam(0, PAGE_OFFSET, PPC_MEMSTART, cam0, _PAGE_KERNEL, 0);
+        settlbcam(0, PAGE_OFFSET, memstart_addr, cam0, _PAGE_KERNEL, 0);
         tlbcam_index++;
         if (cam1) {
                 tlbcam_index++;
-                settlbcam(1, PAGE_OFFSET+cam0, PPC_MEMSTART+cam0, cam1, _PAGE_KERNEL, 0);
+                settlbcam(1, PAGE_OFFSET+cam0, memstart_addr+cam0, cam1, _PAGE_KERNEL, 0);
         }
         if (cam2) {
                 tlbcam_index++;
-                settlbcam(2, PAGE_OFFSET+cam0+cam1, PPC_MEMSTART+cam0+cam1, cam2, _PAGE_KERNEL, 0);
+                settlbcam(2, PAGE_OFFSET+cam0+cam1, memstart_addr+cam0+cam1, cam2, _PAGE_KERNEL, 0);
         }
 }
 
@@ -196,35 +193,32 @@ unsigned long __init mmu_mapin_ram(void)
 void __init
 adjust_total_lowmem(void)
 {
-        unsigned long max_low_mem = MAX_LOW_MEM;
-        unsigned long cam_max = 0x10000000;
-        unsigned long ram;
+        phys_addr_t max_lowmem_size = __max_low_memory;
+        phys_addr_t cam_max_size = 0x10000000;
+        phys_addr_t ram;
 
-        /* adjust CAM size to max_low_mem */
-        if (max_low_mem < cam_max)
-                cam_max = max_low_mem;
+        /* adjust CAM size to max_lowmem_size */
+        if (max_lowmem_size < cam_max_size)
+                cam_max_size = max_lowmem_size;
 
-        /* adjust lowmem size to max_low_mem */
-        if (max_low_mem < total_lowmem)
-                ram = max_low_mem;
-        else
-                ram = total_lowmem;
+        /* adjust lowmem size to max_lowmem_size */
+        ram = min(max_lowmem_size, total_lowmem);
 
         /* Calculate CAM values */
         __cam0 = 1UL << 2 * (__ilog2(ram) / 2);
-        if (__cam0 > cam_max)
-                __cam0 = cam_max;
+        if (__cam0 > cam_max_size)
+                __cam0 = cam_max_size;
         ram -= __cam0;
         if (ram) {
                 __cam1 = 1UL << 2 * (__ilog2(ram) / 2);
-                if (__cam1 > cam_max)
-                        __cam1 = cam_max;
+                if (__cam1 > cam_max_size)
+                        __cam1 = cam_max_size;
                 ram -= __cam1;
         }
         if (ram) {
                 __cam2 = 1UL << 2 * (__ilog2(ram) / 2);
-                if (__cam2 > cam_max)
-                        __cam2 = cam_max;
+                if (__cam2 > cam_max_size)
+                        __cam2 = cam_max_size;
                 ram -= __cam2;
         }
 
@@ -232,6 +226,6 @@ adjust_total_lowmem(void)
                         " CAM2=%ldMb residual: %ldMb\n",
                         __cam0 >> 20, __cam1 >> 20, __cam2 >> 20,
                         (total_lowmem - __cam0 - __cam1 - __cam2) >> 20);
-        __max_low_memory = max_low_mem = __cam0 + __cam1 + __cam2;
-        __initial_memory_limit = __max_low_memory;
+        __max_low_memory = __cam0 + __cam1 + __cam2;
+        __initial_memory_limit_addr = memstart_addr + __max_low_memory;
 }
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index a83dfa3cf40c..2b5a399f6fa6 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -31,6 +31,7 @@
 #include <linux/cache.h>
 #include <linux/init.h>
 #include <linux/signal.h>
+#include <linux/lmb.h>
 
 #include <asm/processor.h>
 #include <asm/pgtable.h>
@@ -41,7 +42,7 @@
 #include <asm/system.h>
 #include <asm/uaccess.h>
 #include <asm/machdep.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/abs_addr.h>
 #include <asm/tlbflush.h>
 #include <asm/io.h>
@@ -191,6 +192,29 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
         return ret < 0 ? ret : 0;
 }
 
+#ifdef CONFIG_MEMORY_HOTPLUG
+static int htab_remove_mapping(unsigned long vstart, unsigned long vend,
+                      int psize, int ssize)
+{
+        unsigned long vaddr;
+        unsigned int step, shift;
+
+        shift = mmu_psize_defs[psize].shift;
+        step = 1 << shift;
+
+        if (!ppc_md.hpte_removebolted) {
+                printk(KERN_WARNING "Platform doesn't implement "
+                                "hpte_removebolted\n");
+                return -EINVAL;
+        }
+
+        for (vaddr = vstart; vaddr < vend; vaddr += step)
+                ppc_md.hpte_removebolted(vaddr, psize, ssize);
+
+        return 0;
+}
+#endif /* CONFIG_MEMORY_HOTPLUG */
+
 static int __init htab_dt_scan_seg_sizes(unsigned long node,
                                          const char *uname, int depth,
                                          void *data)
@@ -434,6 +458,12 @@ void create_section_mapping(unsigned long start, unsigned long end)
                         _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX,
                         mmu_linear_psize, mmu_kernel_ssize));
 }
+
+int remove_section_mapping(unsigned long start, unsigned long end)
+{
+        return htab_remove_mapping(start, end, mmu_linear_psize,
+                        mmu_kernel_ssize);
+}
 #endif /* CONFIG_MEMORY_HOTPLUG */
 
 static inline void make_bl(unsigned int *insn_addr, void *func)
diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c
index 977cb1ee5e72..47325f23c51f 100644
--- a/arch/powerpc/mm/init_32.c
+++ b/arch/powerpc/mm/init_32.c
@@ -30,6 +30,7 @@
 #include <linux/highmem.h>
 #include <linux/initrd.h>
 #include <linux/pagemap.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -41,7 +42,6 @@
 #include <asm/machdep.h>
 #include <asm/btext.h>
 #include <asm/tlb.h>
-#include <asm/lmb.h>
 #include <asm/sections.h>
 
 #include "mmu_decl.h"
@@ -59,8 +59,8 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
 unsigned long total_memory;
 unsigned long total_lowmem;
 
-unsigned long ppc_memstart;
-unsigned long ppc_memoffset = PAGE_OFFSET;
+phys_addr_t memstart_addr;
+phys_addr_t lowmem_end_addr;
 
 int boot_mapsize;
 #ifdef CONFIG_PPC_PMAC
@@ -95,10 +95,10 @@ int __map_without_ltlbs;
 unsigned long __max_low_memory = MAX_LOW_MEM;
 
 /*
- * limit of what is accessible with initial MMU setup -
+ * address of the limit of what is accessible with initial MMU setup -
  * 256MB usually, but only 16MB on 601.
  */
-unsigned long __initial_memory_limit = 0x10000000;
+phys_addr_t __initial_memory_limit_addr = (phys_addr_t)0x10000000;
 
 /*
  * Check for command-line options that affect what MMU_init will do.
@@ -131,10 +131,10 @@ void __init MMU_init(void)
 
         /* 601 can only access 16MB at the moment */
         if (PVR_VER(mfspr(SPRN_PVR)) == 1)
-                __initial_memory_limit = 0x01000000;
+                __initial_memory_limit_addr = 0x01000000;
         /* 8xx can only access 8MB at the moment */
         if (PVR_VER(mfspr(SPRN_PVR)) == 0x50)
-                __initial_memory_limit = 0x00800000;
+                __initial_memory_limit_addr = 0x00800000;
 
         /* parse args from command line */
         MMU_setup();
@@ -145,8 +145,8 @@ void __init MMU_init(void)
                 printk(KERN_WARNING "Only using first contiguous memory region");
         }
 
-        total_memory = lmb_end_of_DRAM();
-        total_lowmem = total_memory;
+        total_lowmem = total_memory = lmb_end_of_DRAM() - memstart_addr;
+        lowmem_end_addr = memstart_addr + total_lowmem;
 
 #ifdef CONFIG_FSL_BOOKE
         /* Freescale Book-E parts expect lowmem to be mapped by fixed TLB
@@ -157,9 +157,10 @@ void __init MMU_init(void)
 
         if (total_lowmem > __max_low_memory) {
                 total_lowmem = __max_low_memory;
+                lowmem_end_addr = memstart_addr + total_lowmem;
 #ifndef CONFIG_HIGHMEM
                 total_memory = total_lowmem;
-                lmb_enforce_memory_limit(total_lowmem);
+                lmb_enforce_memory_limit(lowmem_end_addr);
                 lmb_analyze();
 #endif /* CONFIG_HIGHMEM */
         }
@@ -184,8 +185,6 @@ void __init MMU_init(void)
         /* Map in I/O resources */
         if (ppc_md.progress)
                 ppc_md.progress("MMU:setio", 0x302);
-        if (ppc_md.setup_io_mappings)
-                ppc_md.setup_io_mappings();
 
         /* Initialize the context management stuff */
         mmu_context_init();
@@ -208,7 +207,7 @@ void __init *early_get_page(void)
                 p = alloc_bootmem_pages(PAGE_SIZE);
         } else {
                 p = __va(lmb_alloc_base(PAGE_SIZE, PAGE_SIZE,
-                                        __initial_memory_limit));
+                                        __initial_memory_limit_addr));
         }
         return p;
 }
@@ -276,7 +275,7 @@ static int __init setup_kcore(void)
 
                 kcore_mem = kmalloc(sizeof(struct kcore_list), GFP_ATOMIC);
                 if (!kcore_mem)
-                        panic("%s: kmalloc failed\n", __FUNCTION__);
+                        panic("%s: kmalloc failed\n", __func__);
 
                 /* must stay under 32 bits */
                 if ( 0xfffffffful - (unsigned long)__va(base) < size) {
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index c0f5cff77035..698bd000f98b 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -38,11 +38,11 @@
 #include <linux/nodemask.h>
 #include <linux/module.h>
 #include <linux/poison.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/page.h>
 #include <asm/prom.h>
-#include <asm/lmb.h>
 #include <asm/rtas.h>
 #include <asm/io.h>
 #include <asm/mmu_context.h>
@@ -72,8 +72,7 @@
 #warning TASK_SIZE is smaller than it needs to be.
 #endif
 
-/* max amount of RAM to use */
-unsigned long __max_memory;
+phys_addr_t memstart_addr;
 
 void free_initmem(void)
 {
@@ -122,7 +121,7 @@ static int __init setup_kcore(void)
                 /* GFP_ATOMIC to avoid might_sleep warnings during boot */
                 kcore_mem = kmalloc(sizeof(struct kcore_list), GFP_ATOMIC);
                 if (!kcore_mem)
-                        panic("%s: kmalloc failed\n", __FUNCTION__);
+                        panic("%s: kmalloc failed\n", __func__);
 
                 kclist_add(kcore_mem, __va(base), size);
         }
diff --git a/arch/powerpc/mm/lmb.c b/arch/powerpc/mm/lmb.c
deleted file mode 100644
index 4ce23bcf8a57..000000000000
--- a/arch/powerpc/mm/lmb.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/*
- * Procedures for maintaining information about logical memory blocks.
- *
- * Peter Bergner, IBM Corp.     June 2001.
- * Copyright (C) 2001 Peter Bergner.
- * 
- *      This program is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU General Public License
- *      as published by the Free Software Foundation; either version
- *      2 of the License, or (at your option) any later version.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <asm/types.h>
-#include <asm/page.h>
-#include <asm/prom.h>
-#include <asm/lmb.h>
-#ifdef CONFIG_PPC32
-#include "mmu_decl.h"           /* for __max_low_memory */
-#endif
-
-#undef DEBUG
-
-#ifdef DEBUG
-#include <asm/udbg.h>
-#define DBG(fmt...) udbg_printf(fmt)
-#else
-#define DBG(fmt...)
-#endif
-
-#define LMB_ALLOC_ANYWHERE      0
-
-struct lmb lmb;
-
-void lmb_dump_all(void)
-{
-#ifdef DEBUG
-        unsigned long i;
-
-        DBG("lmb_dump_all:\n");
-        DBG("    memory.cnt               = 0x%lx\n", lmb.memory.cnt);
-        DBG("    memory.size              = 0x%lx\n", lmb.memory.size);
-        for (i=0; i < lmb.memory.cnt ;i++) {
-                DBG("    memory.region[0x%x].base       = 0x%lx\n",
-                            i, lmb.memory.region[i].base);
-                DBG("                 .size     = 0x%lx\n",
-                            lmb.memory.region[i].size);
-        }
-
-        DBG("\n    reserved.cnt   = 0x%lx\n", lmb.reserved.cnt);
-        DBG("    reserved.size    = 0x%lx\n", lmb.reserved.size);
-        for (i=0; i < lmb.reserved.cnt ;i++) {
-                DBG("    reserved.region[0x%x].base       = 0x%lx\n",
-                            i, lmb.reserved.region[i].base);
-                DBG("                 .size     = 0x%lx\n",
-                            lmb.reserved.region[i].size);
-        }
-#endif /* DEBUG */
-}
-
-static unsigned long __init lmb_addrs_overlap(unsigned long base1,
-                unsigned long size1, unsigned long base2, unsigned long size2)
-{
-        return ((base1 < (base2+size2)) && (base2 < (base1+size1)));
-}
-
-static long __init lmb_addrs_adjacent(unsigned long base1, unsigned long size1,
-                unsigned long base2, unsigned long size2)
-{
-        if (base2 == base1 + size1)
-                return 1;
-        else if (base1 == base2 + size2)
-                return -1;
-
-        return 0;
-}
-
-static long __init lmb_regions_adjacent(struct lmb_region *rgn,
-                unsigned long r1, unsigned long r2)
-{
-        unsigned long base1 = rgn->region[r1].base;
-        unsigned long size1 = rgn->region[r1].size;
-        unsigned long base2 = rgn->region[r2].base;
-        unsigned long size2 = rgn->region[r2].size;
-
-        return lmb_addrs_adjacent(base1, size1, base2, size2);
-}
-
-static void __init lmb_remove_region(struct lmb_region *rgn, unsigned long r)
-{
-        unsigned long i;
-
-        for (i = r; i < rgn->cnt - 1; i++) {
-                rgn->region[i].base = rgn->region[i + 1].base;
-                rgn->region[i].size = rgn->region[i + 1].size;
-        }
-        rgn->cnt--;
-}
-
-/* Assumption: base addr of region 1 < base addr of region 2 */
-static void __init lmb_coalesce_regions(struct lmb_region *rgn,
-                unsigned long r1, unsigned long r2)
-{
-        rgn->region[r1].size += rgn->region[r2].size;
-        lmb_remove_region(rgn, r2);
-}
-
-/* This routine called with relocation disabled. */
-void __init lmb_init(void)
-{
-        /* Create a dummy zero size LMB which will get coalesced away later.
-         * This simplifies the lmb_add() code below...
-         */
-        lmb.memory.region[0].base = 0;
-        lmb.memory.region[0].size = 0;
-        lmb.memory.cnt = 1;
-
-        /* Ditto. */
-        lmb.reserved.region[0].base = 0;
-        lmb.reserved.region[0].size = 0;
-        lmb.reserved.cnt = 1;
-}
-
-/* This routine may be called with relocation disabled. */
-void __init lmb_analyze(void)
-{
-        int i;
-
-        lmb.memory.size = 0;
-
-        for (i = 0; i < lmb.memory.cnt; i++)
-                lmb.memory.size += lmb.memory.region[i].size;
-}
-
-/* This routine called with relocation disabled. */
-static long __init lmb_add_region(struct lmb_region *rgn, unsigned long base,
-                                  unsigned long size)
-{
-        unsigned long coalesced = 0;
-        long adjacent, i;
-
-        /* First try and coalesce this LMB with another. */
-        for (i=0; i < rgn->cnt; i++) {
-                unsigned long rgnbase = rgn->region[i].base;
-                unsigned long rgnsize = rgn->region[i].size;
-
-                if ((rgnbase == base) && (rgnsize == size))
-                        /* Already have this region, so we're done */
-                        return 0;
-
-                adjacent = lmb_addrs_adjacent(base,size,rgnbase,rgnsize);
-                if ( adjacent > 0 ) {
-                        rgn->region[i].base -= size;
-                        rgn->region[i].size += size;
-                        coalesced++;
-                        break;
-                }
-                else if ( adjacent < 0 ) {
-                        rgn->region[i].size += size;
-                        coalesced++;
-                        break;
-                }
-        }
-
-        if ((i < rgn->cnt-1) && lmb_regions_adjacent(rgn, i, i+1) ) {
-                lmb_coalesce_regions(rgn, i, i+1);
-                coalesced++;
-        }
-
-        if (coalesced)
-                return coalesced;
-        if (rgn->cnt >= MAX_LMB_REGIONS)
-                return -1;
-
-        /* Couldn't coalesce the LMB, so add it to the sorted table. */
-        for (i = rgn->cnt-1; i >= 0; i--) {
-                if (base < rgn->region[i].base) {
-                        rgn->region[i+1].base = rgn->region[i].base;
-                        rgn->region[i+1].size = rgn->region[i].size;
-                } else {
-                        rgn->region[i+1].base = base;
-                        rgn->region[i+1].size = size;
-                        break;
-                }
-        }
-        rgn->cnt++;
-
-        return 0;
-}
-
-/* This routine may be called with relocation disabled. */
-long __init lmb_add(unsigned long base, unsigned long size)
-{
-        struct lmb_region *_rgn = &(lmb.memory);
-
-        /* On pSeries LPAR systems, the first LMB is our RMO region. */
-        if (base == 0)
-                lmb.rmo_size = size;
-
-        return lmb_add_region(_rgn, base, size);
-
-}
-
-long __init lmb_reserve(unsigned long base, unsigned long size)
-{
-        struct lmb_region *_rgn = &(lmb.reserved);
-
-        BUG_ON(0 == size);
-
-        return lmb_add_region(_rgn, base, size);
-}
-
-long __init lmb_overlaps_region(struct lmb_region *rgn, unsigned long base,
-                                unsigned long size)
-{
-        unsigned long i;
-
-        for (i=0; i < rgn->cnt; i++) {
-                unsigned long rgnbase = rgn->region[i].base;
-                unsigned long rgnsize = rgn->region[i].size;
-                if ( lmb_addrs_overlap(base,size,rgnbase,rgnsize) ) {
-                        break;
-                }
-        }
-
-        return (i < rgn->cnt) ? i : -1;
-}
-
-unsigned long __init lmb_alloc(unsigned long size, unsigned long align)
-{
-        return lmb_alloc_base(size, align, LMB_ALLOC_ANYWHERE);
-}
-
-unsigned long __init lmb_alloc_base(unsigned long size, unsigned long align,
-                                    unsigned long max_addr)
-{
-        unsigned long alloc;
-
-        alloc = __lmb_alloc_base(size, align, max_addr);
-
-        if (alloc == 0)
-                panic("ERROR: Failed to allocate 0x%lx bytes below 0x%lx.\n",
-                                size, max_addr);
-
-        return alloc;
-}
-
-unsigned long __init __lmb_alloc_base(unsigned long size, unsigned long align,
-                                    unsigned long max_addr)
-{
-        long i, j;
-        unsigned long base = 0;
-
-        BUG_ON(0 == size);
-
-#ifdef CONFIG_PPC32
-        /* On 32-bit, make sure we allocate lowmem */
-        if (max_addr == LMB_ALLOC_ANYWHERE)
-                max_addr = __max_low_memory;
-#endif
-        for (i = lmb.memory.cnt-1; i >= 0; i--) {
-                unsigned long lmbbase = lmb.memory.region[i].base;
-                unsigned long lmbsize = lmb.memory.region[i].size;
-
-                if (max_addr == LMB_ALLOC_ANYWHERE)
-                        base = _ALIGN_DOWN(lmbbase + lmbsize - size, align);
-                else if (lmbbase < max_addr) {
-                        base = min(lmbbase + lmbsize, max_addr);
-                        base = _ALIGN_DOWN(base - size, align);
-                } else
-                        continue;
-
-                while ((lmbbase <= base) &&
-                       ((j = lmb_overlaps_region(&lmb.reserved, base, size)) >= 0) )
-                        base = _ALIGN_DOWN(lmb.reserved.region[j].base - size,
-                                           align);
-
-                if ((base != 0) && (lmbbase <= base))
-                        break;
-        }
-
-        if (i < 0)
-                return 0;
-
-        lmb_add_region(&lmb.reserved, base, size);
-
-        return base;
-}
-
-/* You must call lmb_analyze() before this. */
-unsigned long __init lmb_phys_mem_size(void)
-{
-        return lmb.memory.size;
-}
-
-unsigned long __init lmb_end_of_DRAM(void)
-{
-        int idx = lmb.memory.cnt - 1;
-
-        return (lmb.memory.region[idx].base + lmb.memory.region[idx].size);
-}
-
-/* You must call lmb_analyze() after this. */
-void __init lmb_enforce_memory_limit(unsigned long memory_limit)
-{
-        unsigned long i, limit;
-        struct lmb_property *p;
-
-        if (! memory_limit)
-                return;
-
-        /* Truncate the lmb regions to satisfy the memory limit. */
-        limit = memory_limit;
-        for (i = 0; i < lmb.memory.cnt; i++) {
-                if (limit > lmb.memory.region[i].size) {
-                        limit -= lmb.memory.region[i].size;
-                        continue;
-                }
-
-                lmb.memory.region[i].size = limit;
-                lmb.memory.cnt = i + 1;
-                break;
-        }
-
-        if (lmb.memory.region[0].size < lmb.rmo_size)
-                lmb.rmo_size = lmb.memory.region[0].size;
-
-        /* And truncate any reserves above the limit also. */
-        for (i = 0; i < lmb.reserved.cnt; i++) {
-                p = &lmb.reserved.region[i];
-
-                if (p->base > memory_limit)
-                        p->size = 0;
-                else if ((p->base + p->size) > memory_limit)
-                        p->size = memory_limit - p->base;
-
-                if (p->size == 0) {
-                        lmb_remove_region(&lmb.reserved, i);
-                        i--;
-                }
-        }
-}
-
-int __init lmb_is_reserved(unsigned long addr)
-{
-        int i;
-
-        for (i = 0; i < lmb.reserved.cnt; i++) {
-                unsigned long upper = lmb.reserved.region[i].base +
-                                      lmb.reserved.region[i].size - 1;
-                if ((addr >= lmb.reserved.region[i].base) && (addr <= upper))
-                        return 1;
-        }
-        return 0;
-}
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c
index be5c506779a7..16def4dcff6d 100644
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -31,6 +31,7 @@
 #include <linux/initrd.h>
 #include <linux/pagemap.h>
 #include <linux/suspend.h>
+#include <linux/lmb.h>
 
 #include <asm/pgalloc.h>
 #include <asm/prom.h>
@@ -42,7 +43,6 @@
 #include <asm/machdep.h>
 #include <asm/btext.h>
 #include <asm/tlb.h>
-#include <asm/lmb.h>
 #include <asm/sections.h>
 #include <asm/vdso.h>
 
@@ -111,7 +111,7 @@ int memory_add_physaddr_to_nid(u64 start)
 }
 #endif
 
-int __devinit arch_add_memory(int nid, u64 start, u64 size)
+int arch_add_memory(int nid, u64 start, u64 size)
 {
         struct pglist_data *pgdata;
         struct zone *zone;
@@ -175,7 +175,6 @@ void show_mem(void)
 
         printk("Mem-info:\n");
         show_free_areas();
-        printk("Free swap:       %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
         for_each_online_pgdat(pgdat) {
                 unsigned long flags;
                 pgdat_resize_lock(pgdat, &flags);
@@ -217,9 +216,11 @@ void __init do_init_bootmem(void)
         unsigned long total_pages;
         int boot_mapsize;
 
-        max_pfn = total_pages = lmb_end_of_DRAM() >> PAGE_SHIFT;
+        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;
+        max_low_pfn = lowmem_end_addr >> PAGE_SHIFT;
 #endif
 
         /*
@@ -245,18 +246,18 @@ void __init do_init_bootmem(void)
          * present.
          */
 #ifdef CONFIG_HIGHMEM
-        free_bootmem_with_active_regions(0, total_lowmem >> PAGE_SHIFT);
+        free_bootmem_with_active_regions(0, lowmem_end_addr >> PAGE_SHIFT);
 
         /* reserve the sections we're already using */
         for (i = 0; i < lmb.reserved.cnt; i++) {
                 unsigned long addr = lmb.reserved.region[i].base +
                                      lmb_size_bytes(&lmb.reserved, i) - 1;
-                if (addr < total_lowmem)
+                if (addr < lowmem_end_addr)
                         reserve_bootmem(lmb.reserved.region[i].base,
                                         lmb_size_bytes(&lmb.reserved, i),
                                         BOOTMEM_DEFAULT);
-                else if (lmb.reserved.region[i].base < total_lowmem) {
-                        unsigned long adjusted_size = total_lowmem -
+                else if (lmb.reserved.region[i].base < lowmem_end_addr) {
+                        unsigned long adjusted_size = lowmem_end_addr -
                                       lmb.reserved.region[i].base;
                         reserve_bootmem(lmb.reserved.region[i].base,
                                         adjusted_size, BOOTMEM_DEFAULT);
@@ -326,7 +327,7 @@ void __init paging_init(void)
                (top_of_ram - total_ram) >> 20);
         memset(max_zone_pfns, 0, sizeof(max_zone_pfns));
 #ifdef CONFIG_HIGHMEM
-        max_zone_pfns[ZONE_DMA] = total_lowmem >> PAGE_SHIFT;
+        max_zone_pfns[ZONE_DMA] = lowmem_end_addr >> PAGE_SHIFT;
         max_zone_pfns[ZONE_HIGHMEM] = top_of_ram >> PAGE_SHIFT;
 #else
         max_zone_pfns[ZONE_DMA] = top_of_ram >> PAGE_SHIFT;
@@ -381,7 +382,7 @@ void __init mem_init(void)
         {
                 unsigned long pfn, highmem_mapnr;
 
-                highmem_mapnr = total_lowmem >> PAGE_SHIFT;
+                highmem_mapnr = lowmem_end_addr >> PAGE_SHIFT;
                 for (pfn = highmem_mapnr; pfn < max_mapnr; ++pfn) {
                         struct page *page = pfn_to_page(pfn);
                         if (lmb_is_reserved(pfn << PAGE_SHIFT))
diff --git a/arch/powerpc/mm/mmu_decl.h b/arch/powerpc/mm/mmu_decl.h
index ebfd13dc9d19..04802252a64f 100644
--- a/arch/powerpc/mm/mmu_decl.h
+++ b/arch/powerpc/mm/mmu_decl.h
@@ -48,9 +48,11 @@ extern unsigned int num_tlbcam_entries;
 
 extern unsigned long ioremap_bot;
 extern unsigned long __max_low_memory;
-extern unsigned long __initial_memory_limit;
+extern phys_addr_t __initial_memory_limit_addr;
 extern unsigned long total_memory;
 extern unsigned long total_lowmem;
+extern phys_addr_t memstart_addr;
+extern phys_addr_t lowmem_end_addr;
 
 /* ...and now those things that may be slightly different between processor
  * architectures.  -- Dan
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index a300d254aac6..1efd631211ef 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -17,8 +17,9 @@
 #include <linux/nodemask.h>
 #include <linux/cpu.h>
 #include <linux/notifier.h>
+#include <linux/lmb.h>
 #include <asm/sparsemem.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/system.h>
 #include <asm/smp.h>
 
diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index ac3390f81900..64c44bcc68de 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -281,12 +281,13 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
  */
 void __init mapin_ram(void)
 {
-        unsigned long v, p, s, f;
+        unsigned long v, s, f;
+        phys_addr_t p;
         int ktext;
 
         s = mmu_mapin_ram();
         v = KERNELBASE + s;
-        p = PPC_MEMSTART + s;
+        p = memstart_addr + s;
         for (; s < total_lowmem; s += PAGE_SIZE) {
                 ktext = ((char *) v >= _stext && (char *) v < etext);
                 f = ktext ?_PAGE_RAM_TEXT : _PAGE_RAM;
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 5c45d474cfcc..cef9f156874b 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -26,11 +26,11 @@
 #include <linux/mm.h>
 #include <linux/init.h>
 #include <linux/highmem.h>
+#include <linux/lmb.h>
 
 #include <asm/prom.h>
 #include <asm/mmu.h>
 #include <asm/machdep.h>
-#include <asm/lmb.h>
 
 #include "mmu_decl.h"
 
@@ -82,7 +82,6 @@ unsigned long __init mmu_mapin_ram(void)
 #else
         unsigned long tot, bl, done;
         unsigned long max_size = (256<<20);
-        unsigned long align;
 
         if (__map_without_bats) {
                 printk(KERN_DEBUG "RAM mapped without BATs\n");
@@ -93,19 +92,13 @@ unsigned long __init mmu_mapin_ram(void)
 
         /* Make sure we don't map a block larger than the
            smallest alignment of the physical address. */
-        /* alignment of PPC_MEMSTART */
-        align = ~(PPC_MEMSTART-1) & PPC_MEMSTART;
-        /* set BAT block size to MIN(max_size, align) */
-        if (align && align < max_size)
-                max_size = align;
-
         tot = total_lowmem;
         for (bl = 128<<10; bl < max_size; bl <<= 1) {
                 if (bl * 2 > tot)
                         break;
         }
 
-        setbat(2, KERNELBASE, PPC_MEMSTART, bl, _PAGE_RAM);
+        setbat(2, KERNELBASE, 0, bl, _PAGE_RAM);
         done = (unsigned long)bat_addrs[2].limit - KERNELBASE + 1;
         if ((done < tot) && !bat_addrs[3].limit) {
                 /* use BAT3 to cover a bit more */
@@ -113,7 +106,7 @@ unsigned long __init mmu_mapin_ram(void)
                 for (bl = 128<<10; bl < max_size; bl <<= 1)
                         if (bl * 2 > tot)
                                 break;
-                setbat(3, KERNELBASE+done, PPC_MEMSTART+done, bl, _PAGE_RAM);
+                setbat(3, KERNELBASE+done, done, bl, _PAGE_RAM);
                 done = (unsigned long)bat_addrs[3].limit - KERNELBASE + 1;
         }
 
@@ -240,7 +233,7 @@ void __init MMU_init_hw(void)
          */
         if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
         Hash = __va(lmb_alloc_base(Hash_size, Hash_size,
-                                   __initial_memory_limit));
+                                   __initial_memory_limit_addr));
         cacheable_memzero(Hash, Hash_size);
         _SDR1 = __pa(Hash) | SDR1_LOW_BITS;
 
diff --git a/arch/powerpc/mm/stab.c b/arch/powerpc/mm/stab.c
index 50448d5de9d2..efbbd13d93e5 100644
--- a/arch/powerpc/mm/stab.c
+++ b/arch/powerpc/mm/stab.c
@@ -12,12 +12,14 @@
  *      2 of the License, or (at your option) any later version.
  */
 
+#include <linux/lmb.h>
+
 #include <asm/pgtable.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
 #include <asm/paca.h>
 #include <asm/cputable.h>
-#include <asm/lmb.h>
+#include <asm/prom.h>
 #include <asm/abs_addr.h>
 #include <asm/firmware.h>
 #include <asm/iseries/hv_call.h>