27 files changed, 182 insertions, 328 deletions

diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index d64c10093b40..ac22dc7f4cab 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -15,6 +15,7 @@ config MICROBLAZE
         select TRACING_SUPPORT
         select OF
         select OF_EARLY_FLATTREE
+        select IRQ_DOMAIN
         select HAVE_GENERIC_HARDIRQS
         select GENERIC_IRQ_PROBE
         select GENERIC_IRQ_SHOW
diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h
index 615f53992c65..472d8bf726df 100644
--- a/arch/microblaze/include/asm/atomic.h
+++ b/arch/microblaze/include/asm/atomic.h
@@ -1,6 +1,7 @@
 #ifndef _ASM_MICROBLAZE_ATOMIC_H
 #define _ASM_MICROBLAZE_ATOMIC_H
 
+#include <asm/cmpxchg.h>
 #include <asm-generic/atomic.h>
 #include <asm-generic/atomic64.h>
 
diff --git a/arch/microblaze/include/asm/barrier.h b/arch/microblaze/include/asm/barrier.h
new file mode 100644
index 000000000000..df5be3e87044
--- /dev/null
+++ b/arch/microblaze/include/asm/barrier.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_BARRIER_H
+#define _ASM_MICROBLAZE_BARRIER_H
+
+#define nop()                  asm volatile ("nop")
+
+#define smp_read_barrier_depends()      do {} while (0)
+#define read_barrier_depends()          do {} while (0)
+
+#define mb()                    barrier()
+#define rmb()                   mb()
+#define wmb()                   mb()
+#define set_mb(var, value)      do { var = value; mb(); } while (0)
+#define set_wmb(var, value)     do { var = value; wmb(); } while (0)
+
+#define smp_mb()                mb()
+#define smp_rmb()               rmb()
+#define smp_wmb()               wmb()
+
+#endif /* _ASM_MICROBLAZE_BARRIER_H */
diff --git a/arch/microblaze/include/asm/cmpxchg.h b/arch/microblaze/include/asm/cmpxchg.h
new file mode 100644
index 000000000000..0094859abd9b
--- /dev/null
+++ b/arch/microblaze/include/asm/cmpxchg.h
@@ -0,0 +1,40 @@
+#ifndef _ASM_MICROBLAZE_CMPXCHG_H
+#define _ASM_MICROBLAZE_CMPXCHG_H
+
+void __bad_xchg(volatile void *ptr, int size);
+
+static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
+                                                                int size)
+{
+        unsigned long ret;
+        unsigned long flags;
+
+        switch (size) {
+        case 1:
+                local_irq_save(flags);
+                ret = *(volatile unsigned char *)ptr;
+                *(volatile unsigned char *)ptr = x;
+                local_irq_restore(flags);
+                break;
+
+        case 4:
+                local_irq_save(flags);
+                ret = *(volatile unsigned long *)ptr;
+                *(volatile unsigned long *)ptr = x;
+                local_irq_restore(flags);
+                break;
+        default:
+                __bad_xchg(ptr, size), ret = 0;
+                break;
+        }
+
+        return ret;
+}
+
+#define xchg(ptr, x) \
+        ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
+
+#include <asm-generic/cmpxchg.h>
+#include <asm-generic/cmpxchg-local.h>
+
+#endif /* _ASM_MICROBLAZE_CMPXCHG_H */
diff --git a/arch/microblaze/include/asm/exec.h b/arch/microblaze/include/asm/exec.h
new file mode 100644
index 000000000000..e750de1fe8fb
--- /dev/null
+++ b/arch/microblaze/include/asm/exec.h
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_EXEC_H
+#define _ASM_MICROBLAZE_EXEC_H
+
+#define arch_align_stack(x) (x)
+
+#endif /* _ASM_MICROBLAZE_EXEC_H */
diff --git a/arch/microblaze/include/asm/hardirq.h b/arch/microblaze/include/asm/hardirq.h
index cd1ac9aad56c..fb3c05a0cbbf 100644
--- a/arch/microblaze/include/asm/hardirq.h
+++ b/arch/microblaze/include/asm/hardirq.h
@@ -1,17 +1 @@
-/*
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * 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.
- */
-
-#ifndef _ASM_MICROBLAZE_HARDIRQ_H
-#define _ASM_MICROBLAZE_HARDIRQ_H
-
-/* should be defined in each interrupt controller driver */
-extern unsigned int get_irq(struct pt_regs *regs);
-
 #include <asm-generic/hardirq.h>
-
-#endif /* _ASM_MICROBLAZE_HARDIRQ_H */
diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h
index a175132e4496..bab3b1393ad4 100644
--- a/arch/microblaze/include/asm/irq.h
+++ b/arch/microblaze/include/asm/irq.h
@@ -9,49 +9,13 @@
 #ifndef _ASM_MICROBLAZE_IRQ_H
 #define _ASM_MICROBLAZE_IRQ_H
 
-
-/*
- * Linux IRQ# is currently offset by one to map to the hardware
- * irq number. So hardware IRQ0 maps to Linux irq 1.
- */
-#define NO_IRQ_OFFSET   1
-#define IRQ_OFFSET      NO_IRQ_OFFSET
-#define NR_IRQS         (32 + IRQ_OFFSET)
+#define NR_IRQS         (32 + 1)
 #include <asm-generic/irq.h>
 
-/* This type is the placeholder for a hardware interrupt number. It has to
- * be big enough to enclose whatever representation is used by a given
- * platform.
- */
-typedef unsigned long irq_hw_number_t;
-
-extern unsigned int nr_irq;
-
 struct pt_regs;
 extern void do_IRQ(struct pt_regs *regs);
 
-/** FIXME - not implement
- * irq_dispose_mapping - Unmap an interrupt
- * @virq: linux virq number of the interrupt to unmap
- */
-static inline void irq_dispose_mapping(unsigned int virq)
-{
-        return;
-}
-
-struct irq_host;
-
-/**
- * irq_create_mapping - Map a hardware interrupt into linux virq space
- * @host: host owning this hardware interrupt or NULL for default host
- * @hwirq: hardware irq number in that host space
- *
- * Only one mapping per hardware interrupt is permitted. Returns a linux
- * virq number.
- * If the sense/trigger is to be specified, set_irq_type() should be called
- * on the number returned from that call.
- */
-extern unsigned int irq_create_mapping(struct irq_host *host,
-                                        irq_hw_number_t hwirq);
+/* should be defined in each interrupt controller driver */
+extern unsigned int get_irq(void);
 
 #endif /* _ASM_MICROBLAZE_IRQ_H */
diff --git a/arch/microblaze/include/asm/page.h b/arch/microblaze/include/asm/page.h
index 352cc2352bd5..287c5485d286 100644
--- a/arch/microblaze/include/asm/page.h
+++ b/arch/microblaze/include/asm/page.h
@@ -138,6 +138,8 @@ extern unsigned long memory_start;
 extern unsigned long memory_size;
 extern unsigned long lowmem_size;
 
+extern unsigned long kernel_tlb;
+
 extern int page_is_ram(unsigned long pfn);
 
 # define phys_to_pfn(phys)      (PFN_DOWN(phys))
diff --git a/arch/microblaze/include/asm/pci-bridge.h b/arch/microblaze/include/asm/pci-bridge.h
index e9834b2991d0..cb5d39794800 100644
--- a/arch/microblaze/include/asm/pci-bridge.h
+++ b/arch/microblaze/include/asm/pci-bridge.h
@@ -10,7 +10,6 @@
 #include <linux/pci.h>
 #include <linux/list.h>
 #include <linux/ioport.h>
-#include <asm-generic/pci-bridge.h>
 
 struct device_node;
 
diff --git a/arch/microblaze/include/asm/pci.h b/arch/microblaze/include/asm/pci.h
index 033137628e8a..a0da88bf70c5 100644
--- a/arch/microblaze/include/asm/pci.h
+++ b/arch/microblaze/include/asm/pci.h
@@ -94,14 +94,6 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
  */
 #define PCI_DMA_BUS_IS_PHYS     (1)
 
-extern void pcibios_resource_to_bus(struct pci_dev *dev,
-                        struct pci_bus_region *region,
-                        struct resource *res);
-
-extern void pcibios_bus_to_resource(struct pci_dev *dev,
-                        struct resource *res,
-                        struct pci_bus_region *region);
-
 static inline struct resource *pcibios_select_root(struct pci_dev *pdev,
                         struct resource *res)
 {
diff --git a/arch/microblaze/include/asm/pgtable.h b/arch/microblaze/include/asm/pgtable.h
index d8f2c3c68d38..3ef7b9cafeca 100644
--- a/arch/microblaze/include/asm/pgtable.h
+++ b/arch/microblaze/include/asm/pgtable.h
@@ -542,8 +542,6 @@ extern unsigned long iopa(unsigned long addr);
 /* Needs to be defined here and not in linux/mm.h, as it is arch dependent */
 #define kern_addr_valid(addr)   (1)
 
-#define io_remap_page_range remap_page_range
-
 /*
  * No page table caches to initialise
  */
diff --git a/arch/microblaze/include/asm/processor.h b/arch/microblaze/include/asm/processor.h
index 7283bfb2f7e4..510a8e1c16ba 100644
--- a/arch/microblaze/include/asm/processor.h
+++ b/arch/microblaze/include/asm/processor.h
@@ -125,7 +125,6 @@ struct thread_struct {
         .pgdir = swapper_pg_dir, \
 }
 
-
 /* Free all resources held by a thread. */
 extern inline void release_thread(struct task_struct *dead_task)
 {
@@ -144,6 +143,8 @@ static inline void exit_thread(void)
 
 unsigned long get_wchan(struct task_struct *p);
 
+extern void ret_from_fork(void);
+
 /* The size allocated for kernel stacks. This _must_ be a power of two! */
 # define KERNEL_STACK_SIZE      0x2000
 
@@ -166,6 +167,14 @@ unsigned long get_wchan(struct task_struct *p);
 #  define STACK_TOP     TASK_SIZE
 #  define STACK_TOP_MAX STACK_TOP
 
+void disable_hlt(void);
+void enable_hlt(void);
+void default_idle(void);
+
+#ifdef CONFIG_DEBUG_FS
+extern struct dentry *of_debugfs_root;
+#endif
+
 #  endif /* __ASSEMBLY__ */
 # endif /* CONFIG_MMU */
 #endif /* _ASM_MICROBLAZE_PROCESSOR_H */
diff --git a/arch/microblaze/include/asm/setup.h b/arch/microblaze/include/asm/setup.h
index 9f195c094731..0061aa13a340 100644
--- a/arch/microblaze/include/asm/setup.h
+++ b/arch/microblaze/include/asm/setup.h
@@ -20,6 +20,8 @@ extern unsigned int boot_cpuid; /* move to smp.h */
 
 extern char cmd_line[COMMAND_LINE_SIZE];
 
+extern char *klimit;
+
 void early_printk(const char *fmt, ...);
 
 int setup_early_printk(char *opt);
@@ -47,6 +49,10 @@ void machine_shutdown(void);
 void machine_halt(void);
 void machine_power_off(void);
 
+void free_init_pages(char *what, unsigned long begin, unsigned long end);
+extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
+extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
+
 #  endif/* __KERNEL__ */
 # endif /* __ASSEMBLY__ */
 #endif /* _ASM_MICROBLAZE_SETUP_H */
diff --git a/arch/microblaze/include/asm/switch_to.h b/arch/microblaze/include/asm/switch_to.h
new file mode 100644
index 000000000000..f45baa2c5e09
--- /dev/null
+++ b/arch/microblaze/include/asm/switch_to.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_SWITCH_TO_H
+#define _ASM_MICROBLAZE_SWITCH_TO_H
+
+struct task_struct;
+struct thread_info;
+
+extern struct task_struct *_switch_to(struct thread_info *prev,
+                                        struct thread_info *next);
+
+#define switch_to(prev, next, last)                                     \
+        do {                                                            \
+                (last) = _switch_to(task_thread_info(prev),             \
+                                        task_thread_info(next));        \
+        } while (0)
+
+#endif /* _ASM_MICROBLAZE_SWITCH_TO_H */
diff --git a/arch/microblaze/include/asm/system.h b/arch/microblaze/include/asm/system.h
deleted file mode 100644
index 01228d2b1351..000000000000
--- a/arch/microblaze/include/asm/system.h
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright (C) 2006 Atmark Techno, Inc.
- *
- * 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.
- */
-
-#ifndef _ASM_MICROBLAZE_SYSTEM_H
-#define _ASM_MICROBLAZE_SYSTEM_H
-
-#include <asm/registers.h>
-#include <asm/setup.h>
-#include <asm/irqflags.h>
-#include <asm/cache.h>
-
-#include <asm-generic/cmpxchg.h>
-#include <asm-generic/cmpxchg-local.h>
-
-struct task_struct;
-struct thread_info;
-
-extern struct task_struct *_switch_to(struct thread_info *prev,
-                                        struct thread_info *next);
-
-#define switch_to(prev, next, last)                                     \
-        do {                                                            \
-                (last) = _switch_to(task_thread_info(prev),             \
-                                        task_thread_info(next));        \
-        } while (0)
-
-#define smp_read_barrier_depends()      do {} while (0)
-#define read_barrier_depends()          do {} while (0)
-
-#define nop()                   asm volatile ("nop")
-#define mb()                    barrier()
-#define rmb()                   mb()
-#define wmb()                   mb()
-#define set_mb(var, value)      do { var = value; mb(); } while (0)
-#define set_wmb(var, value)     do { var = value; wmb(); } while (0)
-
-#define smp_mb()                mb()
-#define smp_rmb()               rmb()
-#define smp_wmb()               wmb()
-
-void __bad_xchg(volatile void *ptr, int size);
-
-static inline unsigned long __xchg(unsigned long x, volatile void *ptr,
-                                                                int size)
-{
-        unsigned long ret;
-        unsigned long flags;
-
-        switch (size) {
-        case 1:
-                local_irq_save(flags);
-                ret = *(volatile unsigned char *)ptr;
-                *(volatile unsigned char *)ptr = x;
-                local_irq_restore(flags);
-                break;
-
-        case 4:
-                local_irq_save(flags);
-                ret = *(volatile unsigned long *)ptr;
-                *(volatile unsigned long *)ptr = x;
-                local_irq_restore(flags);
-                break;
-        default:
-                __bad_xchg(ptr, size), ret = 0;
-                break;
-        }
-
-        return ret;
-}
-
-void disable_hlt(void);
-void enable_hlt(void);
-void default_idle(void);
-
-#define xchg(ptr, x) \
-        ((__typeof__(*(ptr))) __xchg((unsigned long)(x), (ptr), sizeof(*(ptr))))
-
-void free_init_pages(char *what, unsigned long begin, unsigned long end);
-void free_initmem(void);
-extern char *klimit;
-extern unsigned long kernel_tlb;
-extern void ret_from_fork(void);
-
-extern void *alloc_maybe_bootmem(size_t size, gfp_t mask);
-extern void *zalloc_maybe_bootmem(size_t size, gfp_t mask);
-
-#ifdef CONFIG_DEBUG_FS
-extern struct dentry *of_debugfs_root;
-#endif
-
-#define arch_align_stack(x) (x)
-
-#endif /* _ASM_MICROBLAZE_SYSTEM_H */
diff --git a/arch/microblaze/kernel/cpu/pvr.c b/arch/microblaze/kernel/cpu/pvr.c
index 488c1ed24e38..3a749d5e71fd 100644
--- a/arch/microblaze/kernel/cpu/pvr.c
+++ b/arch/microblaze/kernel/cpu/pvr.c
@@ -12,7 +12,6 @@
 
 #include <linux/kernel.h>
 #include <linux/compiler.h>
-#include <asm/system.h>
 #include <asm/exceptions.h>
 #include <asm/pvr.h>
 
diff --git a/arch/microblaze/kernel/intc.c b/arch/microblaze/kernel/intc.c
index 3003d2f9f551..6c54d4dcdec3 100644
--- a/arch/microblaze/kernel/intc.c
+++ b/arch/microblaze/kernel/intc.c
@@ -9,6 +9,7 @@
  */
 
 #include <linux/init.h>
+#include <linux/irqdomain.h>
 #include <linux/irq.h>
 #include <asm/page.h>
 #include <linux/io.h>
@@ -25,8 +26,6 @@ static unsigned int intc_baseaddr;
 #define INTC_BASE       intc_baseaddr
 #endif
 
-unsigned int nr_irq;
-
 /* No one else should require these constants, so define them locally here. */
 #define ISR 0x00                        /* Interrupt Status Register */
 #define IPR 0x04                        /* Interrupt Pending Register */
@@ -84,24 +83,45 @@ static struct irq_chip intc_dev = {
         .irq_mask_ack = intc_mask_ack,
 };
 
-unsigned int get_irq(struct pt_regs *regs)
+static struct irq_domain *root_domain;
+
+unsigned int get_irq(void)
 {
-        int irq;
+        unsigned int hwirq, irq = -1;
 
-        /*
-         * NOTE: This function is the one that needs to be improved in
-         * order to handle multiple interrupt controllers. It currently
-         * is hardcoded to check for interrupts only on the first INTC.
-         */
-        irq = in_be32(INTC_BASE + IVR) + NO_IRQ_OFFSET;
-        pr_debug("get_irq: %d\n", irq);
+        hwirq = in_be32(INTC_BASE + IVR);
+        if (hwirq != -1U)
+                irq = irq_find_mapping(root_domain, hwirq);
+
+        pr_debug("get_irq: hwirq=%d, irq=%d\n", hwirq, irq);
 
         return irq;
 }
 
+int xintc_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hw)
+{
+        u32 intr_mask = (u32)d->host_data;
+
+        if (intr_mask & (1 << hw)) {
+                irq_set_chip_and_handler_name(irq, &intc_dev,
+                                                handle_edge_irq, "edge");
+                irq_clear_status_flags(irq, IRQ_LEVEL);
+        } else {
+                irq_set_chip_and_handler_name(irq, &intc_dev,
+                                                handle_level_irq, "level");
+                irq_set_status_flags(irq, IRQ_LEVEL);
+        }
+        return 0;
+}
+
+static const struct irq_domain_ops xintc_irq_domain_ops = {
+        .xlate = irq_domain_xlate_onetwocell,
+        .map = xintc_map,
+};
+
 void __init init_IRQ(void)
 {
-        u32 i, intr_mask;
+        u32 nr_irq, intr_mask;
         struct device_node *intc = NULL;
 #ifdef CONFIG_SELFMOD_INTC
         unsigned int intc_baseaddr = 0;
@@ -146,16 +166,9 @@ void __init init_IRQ(void)
         /* Turn on the Master Enable. */
         out_be32(intc_baseaddr + MER, MER_HIE | MER_ME);
 
-        for (i = IRQ_OFFSET; i < (nr_irq + IRQ_OFFSET); ++i) {
-                if (intr_mask & (0x00000001 << (i - IRQ_OFFSET))) {
-                        irq_set_chip_and_handler_name(i, &intc_dev,
-                                handle_edge_irq, "edge");
-                        irq_clear_status_flags(i, IRQ_LEVEL);
-                } else {
-                        irq_set_chip_and_handler_name(i, &intc_dev,
-                                handle_level_irq, "level");
-                        irq_set_status_flags(i, IRQ_LEVEL);
-                }
-                irq_get_irq_data(i)->hwirq = i - IRQ_OFFSET;
-        }
+        /* Yeah, okay, casting the intr_mask to a void* is butt-ugly, but I'm
+         * lazy and Michal can clean it up to something nicer when he tests
+         * and commits this patch.  ~~gcl */
+        root_domain = irq_domain_add_linear(intc, nr_irq, &xintc_irq_domain_ops,
+                                                        (void *)intr_mask);
 }
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index bbebcae72c02..ace700afbfdf 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -31,14 +31,13 @@ void __irq_entry do_IRQ(struct pt_regs *regs)
         trace_hardirqs_off();
 
         irq_enter();
-        irq = get_irq(regs);
+        irq = get_irq();
 next_irq:
         BUG_ON(!irq);
-        /* Substract 1 because of get_irq */
-        generic_handle_irq(irq + IRQ_OFFSET - NO_IRQ_OFFSET);
+        generic_handle_irq(irq);
 
-        irq = get_irq(regs);
-        if (irq) {
+        irq = get_irq();
+        if (irq != -1U) {
                 pr_debug("next irq: %d\n", irq);
                 ++concurrent_irq;
                 goto next_irq;
@@ -48,18 +47,3 @@ next_irq:
         set_irq_regs(old_regs);
         trace_hardirqs_on();
 }
-
-/* MS: There is no any advance mapping mechanism. We are using simple 32bit
-  intc without any cascades or any connection that's why mapping is 1:1 */
-unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq)
-{
-        return hwirq + IRQ_OFFSET;
-}
-EXPORT_SYMBOL_GPL(irq_create_mapping);
-
-unsigned int irq_create_of_mapping(struct device_node *controller,
-                                   const u32 *intspec, unsigned int intsize)
-{
-        return intspec[0] + IRQ_OFFSET;
-}
-EXPORT_SYMBOL_GPL(irq_create_of_mapping);
diff --git a/arch/microblaze/kernel/microblaze_ksyms.c b/arch/microblaze/kernel/microblaze_ksyms.c
index 49faeb429599..bb4907c828dc 100644
--- a/arch/microblaze/kernel/microblaze_ksyms.c
+++ b/arch/microblaze/kernel/microblaze_ksyms.c
@@ -18,7 +18,6 @@
 #include <asm/cacheflush.h>
 #include <linux/io.h>
 #include <asm/page.h>
-#include <asm/system.h>
 #include <linux/ftrace.h>
 #include <linux/uaccess.h>
 
diff --git a/arch/microblaze/kernel/process.c b/arch/microblaze/kernel/process.c
index 7dcb5bfffb75..883b92789cdf 100644
--- a/arch/microblaze/kernel/process.c
+++ b/arch/microblaze/kernel/process.c
@@ -13,7 +13,6 @@
 #include <linux/pm.h>
 #include <linux/tick.h>
 #include <linux/bitops.h>
-#include <asm/system.h>
 #include <asm/pgalloc.h>
 #include <asm/uaccess.h> /* for USER_DS macros */
 #include <asm/cacheflush.h>
@@ -110,9 +109,7 @@ void cpu_idle(void)
                 rcu_idle_exit();
                 tick_nohz_idle_exit();
 
-                preempt_enable_no_resched();
-                schedule();
-                preempt_disable();
+                schedule_preempt_disabled();
                 check_pgt_cache();
         }
 }
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index 80d314e81901..4a764ccb9f26 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -36,7 +36,6 @@
 #include <asm/processor.h>
 #include <asm/irq.h>
 #include <linux/io.h>
-#include <asm/system.h>
 #include <asm/mmu.h>
 #include <asm/pgtable.h>
 #include <asm/sections.h>
diff --git a/arch/microblaze/kernel/setup.c b/arch/microblaze/kernel/setup.c
index 61dc7390984e..16d8dfd9094b 100644
--- a/arch/microblaze/kernel/setup.c
+++ b/arch/microblaze/kernel/setup.c
@@ -30,7 +30,6 @@
 #include <asm/entry.h>
 #include <asm/cpuinfo.h>
 
-#include <asm/system.h>
 #include <asm/prom.h>
 #include <asm/pgtable.h>
 
@@ -51,8 +50,6 @@ void __init setup_arch(char **cmdline_p)
 
         unflatten_device_tree();
 
-        /* NOTE I think that this function is not necessary to call */
-        /* irq_early_init(); */
         setup_cpuinfo();
 
         microblaze_cache_init();
diff --git a/arch/microblaze/kernel/timer.c b/arch/microblaze/kernel/timer.c
index cadfd5608afb..522defa7d41f 100644
--- a/arch/microblaze/kernel/timer.c
+++ b/arch/microblaze/kernel/timer.c
@@ -27,7 +27,6 @@
 #include <asm/setup.h>
 #include <asm/prom.h>
 #include <asm/irq.h>
-#include <asm/system.h>
 #include <linux/cnt32_to_63.h>
 
 #ifdef CONFIG_SELFMOD_TIMER
diff --git a/arch/microblaze/kernel/traps.c b/arch/microblaze/kernel/traps.c
index ba034d421ec2..5541ac559593 100644
--- a/arch/microblaze/kernel/traps.c
+++ b/arch/microblaze/kernel/traps.c
@@ -15,7 +15,6 @@
 #include <linux/debug_locks.h>
 
 #include <asm/exceptions.h>
-#include <asm/system.h>
 #include <asm/unwind.h>
 
 void trap_init(void)
diff --git a/arch/microblaze/lib/memcpy.c b/arch/microblaze/lib/memcpy.c
index 52746e718dfa..fe9c53fafdea 100644
--- a/arch/microblaze/lib/memcpy.c
+++ b/arch/microblaze/lib/memcpy.c
@@ -30,7 +30,6 @@
 #include <linux/module.h>
 
 #include <linux/string.h>
-#include <asm/system.h>
 
 #ifdef __HAVE_ARCH_MEMCPY
 #ifndef CONFIG_OPT_LIB_FUNCTION
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index ae97d2ccdc22..c38a265846de 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -33,7 +33,6 @@
 #include <asm/pgtable.h>
 #include <asm/mmu.h>
 #include <asm/mmu_context.h>
-#include <asm/system.h>
 #include <linux/uaccess.h>
 #include <asm/exceptions.h>
 
diff --git a/arch/microblaze/pci/pci-common.c b/arch/microblaze/pci/pci-common.c
index 85f2ac1230a8..d10403dadd2b 100644
--- a/arch/microblaze/pci/pci-common.c
+++ b/arch/microblaze/pci/pci-common.c
@@ -46,9 +46,6 @@ static int global_phb_number;		/* Global phb counter */
 /* ISA Memory physical address */
 resource_size_t isa_mem_base;
 
-/* Default PCI flags is 0 on ppc32, modified at boot on ppc64 */
-unsigned int pci_flags;
-
 static struct dma_map_ops *pci_dma_ops = &dma_direct_ops;
 
 unsigned long isa_io_base;
@@ -833,64 +830,7 @@ int pci_proc_domain(struct pci_bus *bus)
 {
         struct pci_controller *hose = pci_bus_to_host(bus);
 
-        if (!(pci_flags & PCI_ENABLE_PROC_DOMAINS))
-                return 0;
-        if (pci_flags & PCI_COMPAT_DOMAIN_0)
-                return hose->global_number != 0;
-        return 1;
-}
-
-void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
-                             struct resource *res)
-{
-        resource_size_t offset = 0, mask = (resource_size_t)-1;
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-
-        if (!hose)
-                return;
-        if (res->flags & IORESOURCE_IO) {
-                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-                mask = 0xffffffffu;
-        } else if (res->flags & IORESOURCE_MEM)
-                offset = hose->pci_mem_offset;
-
-        region->start = (res->start - offset) & mask;
-        region->end = (res->end - offset) & mask;
-}
-EXPORT_SYMBOL(pcibios_resource_to_bus);
-
-void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
-                             struct pci_bus_region *region)
-{
-        resource_size_t offset = 0, mask = (resource_size_t)-1;
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-
-        if (!hose)
-                return;
-        if (res->flags & IORESOURCE_IO) {
-                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-                mask = 0xffffffffu;
-        } else if (res->flags & IORESOURCE_MEM)
-                offset = hose->pci_mem_offset;
-        res->start = (region->start + offset) & mask;
-        res->end = (region->end + offset) & mask;
-}
-EXPORT_SYMBOL(pcibios_bus_to_resource);
-
-/* Fixup a bus resource into a linux resource */
-static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
-{
-        struct pci_controller *hose = pci_bus_to_host(dev->bus);
-        resource_size_t offset = 0, mask = (resource_size_t)-1;
-
-        if (res->flags & IORESOURCE_IO) {
-                offset = (unsigned long)hose->io_base_virt - _IO_BASE;
-                mask = 0xffffffffu;
-        } else if (res->flags & IORESOURCE_MEM)
-                offset = hose->pci_mem_offset;
-
-        res->start = (res->start + offset) & mask;
-        res->end = (res->end + offset) & mask;
+        return 0;
 }
 
 /* This header fixup will do the resource fixup for all devices as they are
@@ -910,13 +850,7 @@ static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
                 struct resource *res = dev->resource + i;
                 if (!res->flags)
                         continue;
-                /* On platforms that have PCI_PROBE_ONLY set, we don't
-                 * consider 0 as an unassigned BAR value. It's technically
-                 * a valid value, but linux doesn't like it... so when we can
-                 * re-assign things, we do so, but if we can't, we keep it
-                 * around and hope for the best...
-                 */
-                if (res->start == 0 && !(pci_flags & PCI_PROBE_ONLY)) {
+                if (res->start == 0) {
                         pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]" \
                                                         "is unassigned\n",
                                  pci_name(dev), i,
@@ -929,18 +863,11 @@ static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
                         continue;
                 }
 
-                pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] fixup...\n",
+                pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]\n",
                          pci_name(dev), i,
                          (unsigned long long)res->start,\
                          (unsigned long long)res->end,
                          (unsigned int)res->flags);
-
-                fixup_resource(res, dev);
-
-                pr_debug("PCI:%s            %016llx-%016llx\n",
-                         pci_name(dev),
-                         (unsigned long long)res->start,
-                         (unsigned long long)res->end);
         }
 }
 DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, pcibios_fixup_resources);
@@ -959,10 +886,6 @@ static int __devinit pcibios_uninitialized_bridge_resource(struct pci_bus *bus,
         u16 command;
         int i;
 
-        /* We don't do anything if PCI_PROBE_ONLY is set */
-        if (pci_flags & PCI_PROBE_ONLY)
-                return 0;
-
         /* Job is a bit different between memory and IO */
         if (res->flags & IORESOURCE_MEM) {
                 /* If the BAR is non-0 (res != pci_mem_offset) then it's
@@ -1037,9 +960,6 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
                          (unsigned long long)res->end,
                          (unsigned int)res->flags);
 
-                /* Perform fixup */
-                fixup_resource(res, dev);
-
                 /* Try to detect uninitialized P2P bridge resources,
                  * and clear them out so they get re-assigned later
                  */
@@ -1107,9 +1027,6 @@ EXPORT_SYMBOL(pcibios_fixup_bus);
 
 static int skip_isa_ioresource_align(struct pci_dev *dev)
 {
-        if ((pci_flags & PCI_CAN_SKIP_ISA_ALIGN) &&
-            !(dev->bus->bridge_ctl & PCI_BRIDGE_CTL_ISA))
-                return 1;
         return 0;
 }
 
@@ -1236,8 +1153,6 @@ void pcibios_allocate_bus_resources(struct pci_bus *bus)
                          * and as such ensure proper re-allocation
                          * later.
                          */
-                        if (pci_flags & PCI_REASSIGN_ALL_RSRC)
-                                goto clear_resource;
                         pr = pci_find_parent_resource(bus->self, res);
                         if (pr == res) {
                                 /* this happens when the generic PCI
@@ -1422,27 +1337,19 @@ void __init pcibios_resource_survey(void)
         list_for_each_entry(b, &pci_root_buses, node)
                 pcibios_allocate_bus_resources(b);
 
-        if (!(pci_flags & PCI_REASSIGN_ALL_RSRC)) {
-                pcibios_allocate_resources(0);
-                pcibios_allocate_resources(1);
-        }
+        pcibios_allocate_resources(0);
+        pcibios_allocate_resources(1);
 
         /* Before we start assigning unassigned resource, we try to reserve
          * the low IO area and the VGA memory area if they intersect the
          * bus available resources to avoid allocating things on top of them
          */
-        if (!(pci_flags & PCI_PROBE_ONLY)) {
-                list_for_each_entry(b, &pci_root_buses, node)
-                        pcibios_reserve_legacy_regions(b);
-        }
+        list_for_each_entry(b, &pci_root_buses, node)
+                pcibios_reserve_legacy_regions(b);
 
-        /* Now, if the platform didn't decide to blindly trust the firmware,
-         * we proceed to assigning things that were left unassigned
-         */
-        if (!(pci_flags & PCI_PROBE_ONLY)) {
-                pr_debug("PCI: Assigning unassigned resources...\n");
-                pci_assign_unassigned_resources();
-        }
+        /* Now proceed to assigning things that were left unassigned */
+        pr_debug("PCI: Assigning unassigned resources...\n");
+        pci_assign_unassigned_resources();
 }
 
 #ifdef CONFIG_HOTPLUG
@@ -1535,7 +1442,7 @@ static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, s
                 res->end = res->start + IO_SPACE_LIMIT;
                 res->flags = IORESOURCE_IO;
         }
-        pci_add_resource(resources, res);
+        pci_add_resource_offset(resources, res, hose->io_base_virt - _IO_BASE);
 
         pr_debug("PCI: PHB IO resource    = %016llx-%016llx [%lx]\n",
                  (unsigned long long)res->start,
@@ -1558,7 +1465,7 @@ static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, s
                         res->flags = IORESOURCE_MEM;
 
                 }
-                pci_add_resource(resources, res);
+                pci_add_resource_offset(resources, res, hose->pci_mem_offset);
 
                 pr_debug("PCI: PHB MEM resource %d = %016llx-%016llx [%lx]\n",
                         i, (unsigned long long)res->start,