Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (49 commits)
  [POWERPC] Add zImage.iseries to arch/powerpc/boot/.gitignore
  [POWERPC] bootwrapper: fix build error on virtex405-head.S
  [POWERPC] 4xx: Fix 460GT support to not enable FPU
  [POWERPC] 4xx: Add NOR FLASH entries to Canyonlands and Glacier dts
  [POWERPC] Xilinx: of_serial support for Xilinx uart 16550.
  [POWERPC] Xilinx: boot support for Xilinx uart 16550.
  [POWERPC] celleb: Add support for PCI Express
  [POWERPC] celleb: Move miscellaneous files for Beat
  [POWERPC] celleb: Move a file for SPU on Beat
  [POWERPC] celleb: Move files for Beat mmu and iommu
  [POWERPC] celleb: Move files for Beat hvcall interfaces
  [POWERPC] celleb: Move the SCC related code for celleb
  [POWERPC] celleb: Move the files for celleb base support
  [POWERPC] celleb: Consolidate io-workarounds code
  [POWERPC] cell: Generalize io-workarounds code
  [POWERPC] Add CONFIG_PPC_PSERIES_DEBUG to enable debugging for platforms/pseries
  [POWERPC] Convert from DBG() to pr_debug() in platforms/pseries/
  [POWERPC] Register udbg console early on pseries LPAR
  [POWERPC] Mark udbg console as CON_ANYTIME, ie. callable early in boot
  [POWERPC] Set udbg_console index to 0
  ...

13 files changed, 231 insertions, 102 deletions

diff --git a/include/asm-powerpc/fixmap.h b/include/asm-powerpc/fixmap.h
new file mode 100644
index 000000000000..8428b38a3d30
--- /dev/null
+++ b/include/asm-powerpc/fixmap.h
@@ -0,0 +1,106 @@
+/*
+ * fixmap.h: compile-time virtual memory allocation
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1998 Ingo Molnar
+ *
+ * Copyright 2008 Freescale Semiconductor Inc.
+ *   Port to powerpc added by Kumar Gala
+ */
+
+#ifndef _ASM_FIXMAP_H
+#define _ASM_FIXMAP_H
+
+extern unsigned long FIXADDR_TOP;
+
+#ifndef __ASSEMBLY__
+#include <linux/kernel.h>
+#include <asm/page.h>
+#ifdef CONFIG_HIGHMEM
+#include <linux/threads.h>
+#include <asm/kmap_types.h>
+#endif
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process. We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+enum fixed_addresses {
+        FIX_HOLE,
+#ifdef CONFIG_HIGHMEM
+        FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
+        FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
+#endif
+        /* FIX_PCIE_MCFG, */
+        __end_of_fixed_addresses
+};
+
+extern void __set_fixmap (enum fixed_addresses idx,
+                                        phys_addr_t phys, pgprot_t flags);
+
+#define set_fixmap(idx, phys) \
+                __set_fixmap(idx, phys, PAGE_KERNEL)
+/*
+ * Some hardware wants to get fixmapped without caching.
+ */
+#define set_fixmap_nocache(idx, phys) \
+                __set_fixmap(idx, phys, PAGE_KERNEL_NOCACHE)
+
+#define clear_fixmap(idx) \
+                __set_fixmap(idx, 0, __pgprot(0))
+
+#define __FIXADDR_SIZE  (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START           (FIXADDR_TOP - __FIXADDR_SIZE)
+
+#define __fix_to_virt(x)        (FIXADDR_TOP - ((x) << PAGE_SHIFT))
+#define __virt_to_fix(x)        ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
+
+extern void __this_fixmap_does_not_exist(void);
+
+/*
+ * 'index to address' translation. If anyone tries to use the idx
+ * directly without tranlation, we catch the bug with a NULL-deference
+ * kernel oops. Illegal ranges of incoming indices are caught too.
+ */
+static __always_inline unsigned long fix_to_virt(const unsigned int idx)
+{
+        /*
+         * this branch gets completely eliminated after inlining,
+         * except when someone tries to use fixaddr indices in an
+         * illegal way. (such as mixing up address types or using
+         * out-of-range indices).
+         *
+         * If it doesn't get removed, the linker will complain
+         * loudly with a reasonably clear error message..
+         */
+        if (idx >= __end_of_fixed_addresses)
+                __this_fixmap_does_not_exist();
+
+        return __fix_to_virt(idx);
+}
+
+static inline unsigned long virt_to_fix(const unsigned long vaddr)
+{
+        BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
+        return __virt_to_fix(vaddr);
+}
+
+#endif /* !__ASSEMBLY__ */
+#endif
diff --git a/include/asm-powerpc/highmem.h b/include/asm-powerpc/highmem.h
index f7b21ee302b4..5d99b6489d56 100644
--- a/include/asm-powerpc/highmem.h
+++ b/include/asm-powerpc/highmem.h
@@ -27,9 +27,7 @@
 #include <asm/kmap_types.h>
 #include <asm/tlbflush.h>
 #include <asm/page.h>
-
-/* undef for production */
-#define HIGHMEM_DEBUG 1
+#include <asm/fixmap.h>
 
 extern pte_t *kmap_pte;
 extern pgprot_t kmap_prot;
@@ -40,14 +38,12 @@ extern pte_t *pkmap_page_table;
  * easily, subsequent pte tables have to be allocated in one physical
  * chunk of RAM.
  */
-#define PKMAP_BASE      CONFIG_HIGHMEM_START
 #define LAST_PKMAP      (1 << PTE_SHIFT)
 #define LAST_PKMAP_MASK (LAST_PKMAP-1)
+#define PKMAP_BASE      ((FIXADDR_START - PAGE_SIZE*(LAST_PKMAP + 1)) & PMD_MASK)
 #define PKMAP_NR(virt)  ((virt-PKMAP_BASE) >> PAGE_SHIFT)
 #define PKMAP_ADDR(nr)  (PKMAP_BASE + ((nr) << PAGE_SHIFT))
 
-#define KMAP_FIX_BEGIN  (PKMAP_BASE + 0x00400000UL)
-
 extern void *kmap_high(struct page *page);
 extern void kunmap_high(struct page *page);
 
@@ -73,7 +69,7 @@ static inline void kunmap(struct page *page)
  * be used in IRQ contexts, so in some (very limited) cases we need
  * it.
  */
-static inline void *kmap_atomic(struct page *page, enum km_type type)
+static inline void *kmap_atomic_prot(struct page *page, enum km_type type, pgprot_t prot)
 {
         unsigned int idx;
         unsigned long vaddr;
@@ -84,34 +80,39 @@ static inline void *kmap_atomic(struct page *page, enum km_type type)
                 return page_address(page);
 
         idx = type + KM_TYPE_NR*smp_processor_id();
-        vaddr = KMAP_FIX_BEGIN + idx * PAGE_SIZE;
-#ifdef HIGHMEM_DEBUG
-        BUG_ON(!pte_none(*(kmap_pte+idx)));
+        vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
+#ifdef CONFIG_DEBUG_HIGHMEM
+        BUG_ON(!pte_none(*(kmap_pte-idx)));
 #endif
-        set_pte_at(&init_mm, vaddr, kmap_pte+idx, mk_pte(page, kmap_prot));
+        set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot));
         flush_tlb_page(NULL, vaddr);
 
         return (void*) vaddr;
 }
 
+static inline void *kmap_atomic(struct page *page, enum km_type type)
+{
+        return kmap_atomic_prot(page, type, kmap_prot);
+}
+
 static inline void kunmap_atomic(void *kvaddr, enum km_type type)
 {
-#ifdef HIGHMEM_DEBUG
+#ifdef CONFIG_DEBUG_HIGHMEM
         unsigned long vaddr = (unsigned long) kvaddr & PAGE_MASK;
-        unsigned int idx = type + KM_TYPE_NR*smp_processor_id();
+        enum fixed_addresses idx = type + KM_TYPE_NR*smp_processor_id();
 
-        if (vaddr < KMAP_FIX_BEGIN) { // FIXME
+        if (vaddr < __fix_to_virt(FIX_KMAP_END)) {
                 pagefault_enable();
                 return;
         }
 
-        BUG_ON(vaddr != KMAP_FIX_BEGIN + idx * PAGE_SIZE);
+        BUG_ON(vaddr != __fix_to_virt(FIX_KMAP_BEGIN + idx));
 
         /*
          * force other mappings to Oops if they'll try to access
          * this pte without first remap it
          */
-        pte_clear(&init_mm, vaddr, kmap_pte+idx);
+        pte_clear(&init_mm, vaddr, kmap_pte-idx);
         flush_tlb_page(NULL, vaddr);
 #endif
         pagefault_enable();
@@ -120,12 +121,14 @@ static inline void kunmap_atomic(void *kvaddr, enum km_type type)
 static inline struct page *kmap_atomic_to_page(void *ptr)
 {
         unsigned long idx, vaddr = (unsigned long) ptr;
+        pte_t *pte;
 
-        if (vaddr < KMAP_FIX_BEGIN)
+        if (vaddr < FIXADDR_START)
                 return virt_to_page(ptr);
 
-        idx = (vaddr - KMAP_FIX_BEGIN) >> PAGE_SHIFT;
-        return pte_page(kmap_pte[idx]);
+        idx = virt_to_fix(vaddr);
+        pte = kmap_pte - (idx - FIX_KMAP_BEGIN);
+        return pte_page(*pte);
 }
 
 #define flush_cache_kmaps()     flush_cache_all()
diff --git a/include/asm-powerpc/io-defs.h b/include/asm-powerpc/io-defs.h
index 03691ab69217..44d7927aec69 100644
--- a/include/asm-powerpc/io-defs.h
+++ b/include/asm-powerpc/io-defs.h
@@ -1,59 +1,60 @@
 /* This file is meant to be include multiple times by other headers */
+/* last 2 argments are used by platforms/cell/io-workarounds.[ch] */
 
-DEF_PCI_AC_RET(readb, u8, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readw, u16, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readl, u32, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readw_be, u16, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readl_be, u32, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_NORET(writeb, (u8 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writew, (u16 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writel, (u32 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writew_be, (u16 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writel_be, (u32 val, PCI_IO_ADDR addr), (val, addr))
+DEF_PCI_AC_RET(readb, u8, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_RET(readw, u16, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_RET(readl, u32, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_RET(readw_be, u16, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_RET(readl_be, u32, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_NORET(writeb, (u8 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
+DEF_PCI_AC_NORET(writew, (u16 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
+DEF_PCI_AC_NORET(writel, (u32 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
+DEF_PCI_AC_NORET(writew_be, (u16 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
+DEF_PCI_AC_NORET(writel_be, (u32 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
 
 #ifdef __powerpc64__
-DEF_PCI_AC_RET(readq, u64, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_RET(readq_be, u64, (const PCI_IO_ADDR addr), (addr))
-DEF_PCI_AC_NORET(writeq, (u64 val, PCI_IO_ADDR addr), (val, addr))
-DEF_PCI_AC_NORET(writeq_be, (u64 val, PCI_IO_ADDR addr), (val, addr))
+DEF_PCI_AC_RET(readq, u64, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_RET(readq_be, u64, (const PCI_IO_ADDR addr), (addr), mem, addr)
+DEF_PCI_AC_NORET(writeq, (u64 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
+DEF_PCI_AC_NORET(writeq_be, (u64 val, PCI_IO_ADDR addr), (val, addr), mem, addr)
 #endif /* __powerpc64__ */
 
-DEF_PCI_AC_RET(inb, u8, (unsigned long port), (port))
-DEF_PCI_AC_RET(inw, u16, (unsigned long port), (port))
-DEF_PCI_AC_RET(inl, u32, (unsigned long port), (port))
-DEF_PCI_AC_NORET(outb, (u8 val, unsigned long port), (val, port))
-DEF_PCI_AC_NORET(outw, (u16 val, unsigned long port), (val, port))
-DEF_PCI_AC_NORET(outl, (u32 val, unsigned long port), (val, port))
+DEF_PCI_AC_RET(inb, u8, (unsigned long port), (port), pio, port)
+DEF_PCI_AC_RET(inw, u16, (unsigned long port), (port), pio, port)
+DEF_PCI_AC_RET(inl, u32, (unsigned long port), (port), pio, port)
+DEF_PCI_AC_NORET(outb, (u8 val, unsigned long port), (val, port), pio, port)
+DEF_PCI_AC_NORET(outw, (u16 val, unsigned long port), (val, port), pio, port)
+DEF_PCI_AC_NORET(outl, (u32 val, unsigned long port), (val, port), pio, port)
 
-DEF_PCI_AC_NORET(readsb, (const PCI_IO_ADDR a, void *b, unsigned long c), \
-                 (a, b, c))
-DEF_PCI_AC_NORET(readsw, (const PCI_IO_ADDR a, void *b, unsigned long c), \
-                 (a, b, c))
-DEF_PCI_AC_NORET(readsl, (const PCI_IO_ADDR a, void *b, unsigned long c), \
-                 (a, b, c))
-DEF_PCI_AC_NORET(writesb, (PCI_IO_ADDR a, const void *b, unsigned long c), \
-                 (a, b, c))
-DEF_PCI_AC_NORET(writesw, (PCI_IO_ADDR a, const void *b, unsigned long c), \
-                 (a, b, c))
-DEF_PCI_AC_NORET(writesl, (PCI_IO_ADDR a, const void *b, unsigned long c), \
-                 (a, b, c))
+DEF_PCI_AC_NORET(readsb, (const PCI_IO_ADDR a, void *b, unsigned long c),
+                 (a, b, c), mem, a)
+DEF_PCI_AC_NORET(readsw, (const PCI_IO_ADDR a, void *b, unsigned long c),
+                 (a, b, c), mem, a)
+DEF_PCI_AC_NORET(readsl, (const PCI_IO_ADDR a, void *b, unsigned long c),
+                 (a, b, c), mem, a)
+DEF_PCI_AC_NORET(writesb, (PCI_IO_ADDR a, const void *b, unsigned long c),
+                 (a, b, c), mem, a)
+DEF_PCI_AC_NORET(writesw, (PCI_IO_ADDR a, const void *b, unsigned long c),
+                 (a, b, c), mem, a)
+DEF_PCI_AC_NORET(writesl, (PCI_IO_ADDR a, const void *b, unsigned long c),
+                 (a, b, c), mem, a)
 
-DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c), \
-                 (p, b, c))
-DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c), \
-                 (p, b, c))
-DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c), \
-                 (p, b, c))
-DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c), \
-                 (p, b, c))
-DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c), \
-                 (p, b, c))
-DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c), \
-                 (p, b, c))
+DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c),
+                 (p, b, c), pio, p)
+DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
+                 (p, b, c), pio, p)
+DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
+                 (p, b, c), pio, p)
+DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
+                 (p, b, c), pio, p)
+DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
+                 (p, b, c), pio, p)
+DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
+                 (p, b, c), pio, p)
 
-DEF_PCI_AC_NORET(memset_io, (PCI_IO_ADDR a, int c, unsigned long n),       \
-                 (a, c, n))
-DEF_PCI_AC_NORET(memcpy_fromio,(void *d,const PCI_IO_ADDR s,unsigned long n), \
-                 (d, s, n))
-DEF_PCI_AC_NORET(memcpy_toio,(PCI_IO_ADDR d,const void *s,unsigned long n),   \
-                 (d, s, n))
+DEF_PCI_AC_NORET(memset_io, (PCI_IO_ADDR a, int c, unsigned long n),
+                 (a, c, n), mem, a)
+DEF_PCI_AC_NORET(memcpy_fromio, (void *d, const PCI_IO_ADDR s, unsigned long n),
+                 (d, s, n), mem, s)
+DEF_PCI_AC_NORET(memcpy_toio, (PCI_IO_ADDR d, const void *s, unsigned long n),
+                 (d, s, n), mem, d)
diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h
index 7be26f615755..afae0697e8ce 100644
--- a/include/asm-powerpc/io.h
+++ b/include/asm-powerpc/io.h
@@ -458,8 +458,8 @@ __do_out_asm(_rec_outl, "stwbrx")
 /* Structure containing all the hooks */
 extern struct ppc_pci_io {
 
-#define DEF_PCI_AC_RET(name, ret, at, al)       ret (*name) at;
-#define DEF_PCI_AC_NORET(name, at, al)          void (*name) at;
+#define DEF_PCI_AC_RET(name, ret, at, al, space, aa)    ret (*name) at;
+#define DEF_PCI_AC_NORET(name, at, al, space, aa)       void (*name) at;
 
 #include <asm/io-defs.h>
 
@@ -469,7 +469,7 @@ extern struct ppc_pci_io {
 } ppc_pci_io;
 
 /* The inline wrappers */
-#define DEF_PCI_AC_RET(name, ret, at, al)                       \
+#define DEF_PCI_AC_RET(name, ret, at, al, space, aa)            \
 static inline ret name at                                       \
 {                                                               \
         if (DEF_PCI_HOOK(ppc_pci_io.name) != NULL)              \
@@ -477,7 +477,7 @@ static inline ret name at					\
         return __do_##name al;                                  \
 }
 
-#define DEF_PCI_AC_NORET(name, at, al)                          \
+#define DEF_PCI_AC_NORET(name, at, al, space, aa)               \
 static inline void name at                                      \
 {                                                               \
         if (DEF_PCI_HOOK(ppc_pci_io.name) != NULL)              \
diff --git a/include/asm-powerpc/kdump.h b/include/asm-powerpc/kdump.h
index 10e8eb1e6f4f..f6c93c716898 100644
--- a/include/asm-powerpc/kdump.h
+++ b/include/asm-powerpc/kdump.h
@@ -11,16 +11,11 @@
 
 #ifdef CONFIG_CRASH_DUMP
 
-#define PHYSICAL_START  KDUMP_KERNELBASE
 #define KDUMP_TRAMPOLINE_START  0x0100
 #define KDUMP_TRAMPOLINE_END    0x3000
 
 #define KDUMP_MIN_TCE_ENTRIES   2048
 
-#else /* !CONFIG_CRASH_DUMP */
-
-#define PHYSICAL_START  0x0
-
 #endif /* CONFIG_CRASH_DUMP */
 
 #ifndef __ASSEMBLY__
diff --git a/include/asm-powerpc/paca.h b/include/asm-powerpc/paca.h
index eb61b9c1edfd..7b564444ff61 100644
--- a/include/asm-powerpc/paca.h
+++ b/include/asm-powerpc/paca.h
@@ -108,6 +108,7 @@ struct paca_struct {
 };
 
 extern struct paca_struct paca[];
+extern void initialise_pacas(void);
 
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_PACA_H */
diff --git a/include/asm-powerpc/page.h b/include/asm-powerpc/page.h
index 6c850609b847..cffdf0eb0df6 100644
--- a/include/asm-powerpc/page.h
+++ b/include/asm-powerpc/page.h
@@ -12,6 +12,7 @@
 
 #include <asm/asm-compat.h>
 #include <asm/kdump.h>
+#include <asm/types.h>
 
 /*
  * On PPC32 page size is 4K. For PPC64 we support either 4K or 64K software
@@ -42,8 +43,23 @@
  *
  * The kdump dump kernel is one example where KERNELBASE != PAGE_OFFSET.
  *
- * To get a physical address from a virtual one you subtract PAGE_OFFSET,
- * _not_ KERNELBASE.
+ * PAGE_OFFSET is the virtual address of the start of lowmem.
+ *
+ * PHYSICAL_START is the physical address of the start of the kernel.
+ *
+ * MEMORY_START is the physical address of the start of lowmem.
+ *
+ * KERNELBASE, PAGE_OFFSET, and PHYSICAL_START are all configurable on
+ * ppc32 and based on how they are set we determine MEMORY_START.
+ *
+ * For the linear mapping the following equation should be true:
+ * KERNELBASE - PAGE_OFFSET = PHYSICAL_START - MEMORY_START
+ *
+ * Also, KERNELBASE >= PAGE_OFFSET and PHYSICAL_START >= MEMORY_START
+ *
+ * There are two was to determine a physical address from a virtual one:
+ * va = pa + PAGE_OFFSET - MEMORY_START
+ * va = pa + KERNELBASE - PHYSICAL_START
  *
  * If you want to know something's offset from the start of the kernel you
  * should subtract KERNELBASE.
@@ -51,20 +67,33 @@
  * If you want to test if something's a kernel address, use is_kernel_addr().
  */
 
-#define PAGE_OFFSET     ASM_CONST(CONFIG_KERNEL_START)
-#define KERNELBASE      (PAGE_OFFSET + PHYSICAL_START)
-#define LOAD_OFFSET     PAGE_OFFSET
+#define KERNELBASE      ASM_CONST(CONFIG_KERNEL_START)
+#define PAGE_OFFSET     ASM_CONST(CONFIG_PAGE_OFFSET)
+#define LOAD_OFFSET     ASM_CONST((CONFIG_KERNEL_START-CONFIG_PHYSICAL_START))
+
+#if defined(CONFIG_RELOCATABLE) && defined(CONFIG_FLATMEM)
+#ifndef __ASSEMBLY__
+extern phys_addr_t memstart_addr;
+extern phys_addr_t kernstart_addr;
+#endif
+#define PHYSICAL_START  kernstart_addr
+#define MEMORY_START    memstart_addr
+#else
+#define PHYSICAL_START  ASM_CONST(CONFIG_PHYSICAL_START)
+#define MEMORY_START    (PHYSICAL_START + PAGE_OFFSET - KERNELBASE)
+#endif
 
 #ifdef CONFIG_FLATMEM
-#define pfn_valid(pfn)          ((pfn) < max_mapnr)
+#define ARCH_PFN_OFFSET         (MEMORY_START >> PAGE_SHIFT)
+#define pfn_valid(pfn)          ((pfn) >= ARCH_PFN_OFFSET && (pfn) < (ARCH_PFN_OFFSET + max_mapnr))
 #endif
 
 #define virt_to_page(kaddr)     pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define pfn_to_kaddr(pfn)       __va((pfn) << PAGE_SHIFT)
 #define virt_addr_valid(kaddr)  pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
-#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
-#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
+#define __va(x) ((void *)((unsigned long)(x) - PHYSICAL_START + KERNELBASE))
+#define __pa(x) ((unsigned long)(x) + PHYSICAL_START - KERNELBASE)
 
 /*
  * Unfortunately the PLT is in the BSS in the PPC32 ELF ABI,
diff --git a/include/asm-powerpc/page_32.h b/include/asm-powerpc/page_32.h
index 51f8134b5939..ebfae530a379 100644
--- a/include/asm-powerpc/page_32.h
+++ b/include/asm-powerpc/page_32.h
@@ -1,6 +1,12 @@
 #ifndef _ASM_POWERPC_PAGE_32_H
 #define _ASM_POWERPC_PAGE_32_H
 
+#if defined(CONFIG_PHYSICAL_ALIGN) && (CONFIG_PHYSICAL_START != 0)
+#if (CONFIG_PHYSICAL_START % CONFIG_PHYSICAL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of CONFIG_PHYSICAL_ALIGN"
+#endif
+#endif
+
 #define VM_DATA_DEFAULT_FLAGS   VM_DATA_DEFAULT_FLAGS32
 
 #ifdef CONFIG_NOT_COHERENT_CACHE
diff --git a/include/asm-powerpc/thread_info.h b/include/asm-powerpc/thread_info.h
index 40d5f98c44fc..d030f5ce39ad 100644
--- a/include/asm-powerpc/thread_info.h
+++ b/include/asm-powerpc/thread_info.h
@@ -80,12 +80,8 @@ struct thread_info {
 
 #else /* THREAD_SHIFT < PAGE_SHIFT */
 
-#ifdef CONFIG_DEBUG_STACK_USAGE
-#define alloc_thread_info(tsk)  kzalloc(THREAD_SIZE, GFP_KERNEL)
-#else
-#define alloc_thread_info(tsk)  kmalloc(THREAD_SIZE, GFP_KERNEL)
-#endif
-#define free_thread_info(ti)    kfree(ti)
+extern struct thread_info *alloc_thread_info(struct task_struct *tsk);
+extern void free_thread_info(struct thread_info *ti);
 
 #endif /* THREAD_SHIFT < PAGE_SHIFT */
 
diff --git a/include/asm-ppc/mmu.h b/include/asm-ppc/mmu.h
index d46b57b589ae..d76ef098ed37 100644
--- a/include/asm-ppc/mmu.h
+++ b/include/asm-ppc/mmu.h
@@ -15,10 +15,8 @@
  * physical need a larger than native word size type. -Matt
  */
 #ifndef CONFIG_PHYS_64BIT
-typedef unsigned long phys_addr_t;
 #define PHYS_FMT        "%.8lx"
 #else
-typedef unsigned long long phys_addr_t;
 extern phys_addr_t fixup_bigphys_addr(phys_addr_t, phys_addr_t);
 #define PHYS_FMT        "%16Lx"
 #endif
diff --git a/include/asm-ppc/mpc8260.h b/include/asm-ppc/mpc8260.h
index 23579d4afae7..402ba15c2e80 100644
--- a/include/asm-ppc/mpc8260.h
+++ b/include/asm-ppc/mpc8260.h
@@ -35,10 +35,6 @@
 #include <platforms/tqm8260.h>
 #endif
 
-#if defined(CONFIG_PQ2ADS) || defined (CONFIG_PQ2FADS)
-#include <platforms/pq2ads.h>
-#endif
-
 #ifdef CONFIG_PCI_8260
 #include <syslib/m82xx_pci.h>
 #endif
diff --git a/include/asm-ppc/mpc8xx.h b/include/asm-ppc/mpc8xx.h
index d3a2f2fe230c..b9e3060b0278 100644
--- a/include/asm-ppc/mpc8xx.h
+++ b/include/asm-ppc/mpc8xx.h
@@ -63,10 +63,6 @@
 #include <platforms/lantec.h>
 #endif
 
-#if defined(CONFIG_MPC885ADS)
-#include <platforms/mpc885ads.h>
-#endif
-
 /* Currently, all 8xx boards that support a processor to PCI/ISA bridge
  * use the same memory map.
  */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 311380e5fe89..d0bd97044abd 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1926,6 +1926,8 @@ static inline unsigned long *end_of_stack(struct task_struct *p)
 
 #endif
 
+extern void thread_info_cache_init(void);
+
 /* set thread flags in other task's structures
  * - see asm/thread_info.h for TIF_xxxx flags available
  */