36 files changed, 551 insertions, 248 deletions

diff --git a/arch/arm/include/asm/Kbuild b/arch/arm/include/asm/Kbuild
index f70ae175a3d6..d3db39860b9c 100644
--- a/arch/arm/include/asm/Kbuild
+++ b/arch/arm/include/asm/Kbuild
@@ -16,7 +16,6 @@ generic-y += local64.h
 generic-y += msgbuf.h
 generic-y += param.h
 generic-y += parport.h
-generic-y += percpu.h
 generic-y += poll.h
 generic-y += resource.h
 generic-y += sections.h
@@ -31,5 +30,6 @@ generic-y += sockios.h
 generic-y += termbits.h
 generic-y += termios.h
 generic-y += timex.h
+generic-y += trace_clock.h
 generic-y += types.h
 generic-y += unaligned.h
diff --git a/arch/arm/include/asm/assembler.h b/arch/arm/include/asm/assembler.h
index 2ef95813fce0..eb87200aa4b5 100644
--- a/arch/arm/include/asm/assembler.h
+++ b/arch/arm/include/asm/assembler.h
@@ -250,6 +250,7 @@
  * Beware, it also clobers LR.
  */
 .macro safe_svcmode_maskall reg:req
+#if __LINUX_ARM_ARCH__ >= 6
         mrs     \reg , cpsr
         mov     lr , \reg
         and     lr , lr , #MODE_MASK
@@ -266,6 +267,13 @@ THUMB(	orr	\reg , \reg , #PSR_T_BIT	)
         __ERET
 1:      msr     cpsr_c, \reg
 2:
+#else
+/*
+ * workaround for possibly broken pre-v6 hardware
+ * (akita, Sharp Zaurus C-1000, PXA270-based)
+ */
+        setmode PSR_F_BIT | PSR_I_BIT | SVC_MODE, \reg
+#endif
 .endm
 
 /*
diff --git a/arch/arm/include/asm/cpu.h b/arch/arm/include/asm/cpu.h
index d797223b39d5..2744f0602550 100644
--- a/arch/arm/include/asm/cpu.h
+++ b/arch/arm/include/asm/cpu.h
@@ -15,6 +15,7 @@
 
 struct cpuinfo_arm {
         struct cpu      cpu;
+        u32             cpuid;
 #ifdef CONFIG_SMP
         unsigned int    loops_per_jiffy;
 #endif
diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index cb47d28cbe1f..a59dcb5ab5fc 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -25,6 +25,19 @@
 #define CPUID_EXT_ISAR4 "c2, 4"
 #define CPUID_EXT_ISAR5 "c2, 5"
 
+#define MPIDR_SMP_BITMASK (0x3 << 30)
+#define MPIDR_SMP_VALUE (0x2 << 30)
+
+#define MPIDR_MT_BITMASK (0x1 << 24)
+
+#define MPIDR_HWID_BITMASK 0xFFFFFF
+
+#define MPIDR_LEVEL_BITS 8
+#define MPIDR_LEVEL_MASK ((1 << MPIDR_LEVEL_BITS) - 1)
+
+#define MPIDR_AFFINITY_LEVEL(mpidr, level) \
+        ((mpidr >> (MPIDR_LEVEL_BITS * level)) & MPIDR_LEVEL_MASK)
+
 extern unsigned int processor_id;
 
 #ifdef CONFIG_CPU_CP15
diff --git a/arch/arm/include/asm/cti.h b/arch/arm/include/asm/cti.h
index a0ada3ea4358..f2e5cad3f306 100644
--- a/arch/arm/include/asm/cti.h
+++ b/arch/arm/include/asm/cti.h
@@ -146,15 +146,7 @@ static inline void cti_irq_ack(struct cti *cti)
  */
 static inline void cti_unlock(struct cti *cti)
 {
-        void __iomem *base = cti->base;
-        unsigned long val;
-
-        val = __raw_readl(base + LOCKSTATUS);
-
-        if (val & 1) {
-                val = LOCKCODE;
-                __raw_writel(val, base + LOCKACCESS);
-        }
+        __raw_writel(LOCKCODE, cti->base + LOCKACCESS);
 }
 
 /**
@@ -166,14 +158,6 @@ static inline void cti_unlock(struct cti *cti)
  */
 static inline void cti_lock(struct cti *cti)
 {
-        void __iomem *base = cti->base;
-        unsigned long val;
-
-        val = __raw_readl(base + LOCKSTATUS);
-
-        if (!(val & 1)) {
-                val = ~LOCKCODE;
-                __raw_writel(val, base + LOCKACCESS);
-        }
+        __raw_writel(~LOCKCODE, cti->base + LOCKACCESS);
 }
 #endif
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index 23004847bb05..67d06324e74a 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -111,6 +111,8 @@ static inline void dma_free_noncoherent(struct device *dev, size_t size,
 
 extern int dma_supported(struct device *dev, u64 mask);
 
+extern int arm_dma_set_mask(struct device *dev, u64 dma_mask);
+
 /**
  * arm_dma_alloc - allocate consistent memory for DMA
  * @dev: valid struct device pointer, or NULL for ISA and EISA-like devices
@@ -211,13 +213,6 @@ static inline void dma_free_writecombine(struct device *dev, size_t size,
 extern void __init init_dma_coherent_pool_size(unsigned long size);
 
 /*
- * This can be called during boot to increase the size of the consistent
- * DMA region above it's default value of 2MB. It must be called before the
- * memory allocator is initialised, i.e. before any core_initcall.
- */
-static inline void init_consistent_dma_size(unsigned long size) { }
-
-/*
  * For SA-1111, IXP425, and ADI systems  the dma-mapping functions are "magic"
  * and utilize bounce buffers as needed to work around limited DMA windows.
  *
diff --git a/arch/arm/include/asm/hardware/cache-l2x0.h b/arch/arm/include/asm/hardware/cache-l2x0.h
index c4c87bc12231..3b2c40b5bfa2 100644
--- a/arch/arm/include/asm/hardware/cache-l2x0.h
+++ b/arch/arm/include/asm/hardware/cache-l2x0.h
@@ -102,6 +102,10 @@
 
 #define L2X0_ADDR_FILTER_EN             1
 
+#define L2X0_CTRL_EN                    1
+
+#define L2X0_WAY_SIZE_SHIFT             3
+
 #ifndef __ASSEMBLY__
 extern void __init l2x0_init(void __iomem *base, u32 aux_val, u32 aux_mask);
 #if defined(CONFIG_CACHE_L2X0) && defined(CONFIG_OF)
@@ -126,6 +130,7 @@ struct l2x0_regs {
         unsigned long filter_end;
         unsigned long prefetch_ctrl;
         unsigned long pwr_ctrl;
+        unsigned long ctrl;
 };
 
 extern struct l2x0_regs l2x0_saved_regs;
diff --git a/arch/arm/include/asm/hardware/sp810.h b/arch/arm/include/asm/hardware/sp810.h
index 6b9b077d86b3..6636430dd0e6 100644
--- a/arch/arm/include/asm/hardware/sp810.h
+++ b/arch/arm/include/asm/hardware/sp810.h
@@ -50,11 +50,7 @@
 #define SCPCELLID2              0xFF8
 #define SCPCELLID3              0xFFC
 
-#define SCCTRL_TIMEREN0SEL_REFCLK       (0 << 15)
-#define SCCTRL_TIMEREN0SEL_TIMCLK       (1 << 15)
-
-#define SCCTRL_TIMEREN1SEL_REFCLK       (0 << 17)
-#define SCCTRL_TIMEREN1SEL_TIMCLK       (1 << 17)
+#define SCCTRL_TIMERENnSEL_SHIFT(n)     (15 + ((n) * 2))
 
 static inline void sysctl_soft_reset(void __iomem *base)
 {
diff --git a/arch/arm/include/asm/hardware/vic.h b/arch/arm/include/asm/hardware/vic.h
index e14af1a1a320..2bebad36fc83 100644
--- a/arch/arm/include/asm/hardware/vic.h
+++ b/arch/arm/include/asm/hardware/vic.h
@@ -47,7 +47,7 @@
 struct device_node;
 struct pt_regs;
 
-void __vic_init(void __iomem *base, unsigned int irq_start, u32 vic_sources,
+void __vic_init(void __iomem *base, int irq_start, u32 vic_sources,
                 u32 resume_sources, struct device_node *node);
 void vic_init(void __iomem *base, unsigned int irq_start, u32 vic_sources, u32 resume_sources);
 int vic_of_init(struct device_node *node, struct device_node *parent);
diff --git a/arch/arm/include/asm/hw_breakpoint.h b/arch/arm/include/asm/hw_breakpoint.h
index c190bc992f0e..01169dd723f1 100644
--- a/arch/arm/include/asm/hw_breakpoint.h
+++ b/arch/arm/include/asm/hw_breakpoint.h
@@ -98,12 +98,12 @@ static inline void decode_ctrl_reg(u32 reg,
 #define ARM_BASE_WCR            112
 
 /* Accessor macros for the debug registers. */
-#define ARM_DBG_READ(M, OP2, VAL) do {\
-        asm volatile("mrc p14, 0, %0, c0," #M ", " #OP2 : "=r" (VAL));\
+#define ARM_DBG_READ(N, M, OP2, VAL) do {\
+        asm volatile("mrc p14, 0, %0, " #N "," #M ", " #OP2 : "=r" (VAL));\
 } while (0)
 
-#define ARM_DBG_WRITE(M, OP2, VAL) do {\
-        asm volatile("mcr p14, 0, %0, c0," #M ", " #OP2 : : "r" (VAL));\
+#define ARM_DBG_WRITE(N, M, OP2, VAL) do {\
+        asm volatile("mcr p14, 0, %0, " #N "," #M ", " #OP2 : : "r" (VAL));\
 } while (0)
 
 struct notifier_block;
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index 42f042ee4ada..652b56086de7 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -374,7 +374,7 @@ extern void pci_iounmap(struct pci_dev *dev, void __iomem *addr);
 
 #ifdef CONFIG_MMU
 #define ARCH_HAS_VALID_PHYS_ADDR_RANGE
-extern int valid_phys_addr_range(unsigned long addr, size_t size);
+extern int valid_phys_addr_range(phys_addr_t addr, size_t size);
 extern int valid_mmap_phys_addr_range(unsigned long pfn, size_t size);
 extern int devmem_is_allowed(unsigned long pfn);
 #endif
diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
index 195ac2f9d3d3..2fe141fcc8d6 100644
--- a/arch/arm/include/asm/mach/map.h
+++ b/arch/arm/include/asm/mach/map.h
@@ -40,6 +40,13 @@ extern void iotable_init(struct map_desc *, int);
 extern void vm_reserve_area_early(unsigned long addr, unsigned long size,
                                   void *caller);
 
+#ifdef CONFIG_DEBUG_LL
+extern void debug_ll_addr(unsigned long *paddr, unsigned long *vaddr);
+extern void debug_ll_io_init(void);
+#else
+static inline void debug_ll_io_init(void) {}
+#endif
+
 struct mem_type;
 extern const struct mem_type *get_mem_type(unsigned int type);
 /*
diff --git a/arch/arm/include/asm/mach/serial_at91.h b/arch/arm/include/asm/mach/serial_at91.h
deleted file mode 100644
index ea6d063923b8..000000000000
--- a/arch/arm/include/asm/mach/serial_at91.h
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- *  arch/arm/include/asm/mach/serial_at91.h
- *
- *  Based on serial_sa1100.h  by Nicolas Pitre
- *
- *  Copyright (C) 2002 ATMEL Rousset
- *
- *  Low level machine dependent UART functions.
- */
-
-struct uart_port;
-
-/*
- * This is a temporary structure for registering these
- * functions; it is intended to be discarded after boot.
- */
-struct atmel_port_fns {
-        void    (*set_mctrl)(struct uart_port *, u_int);
-        u_int   (*get_mctrl)(struct uart_port *);
-        void    (*enable_ms)(struct uart_port *);
-        void    (*pm)(struct uart_port *, u_int, u_int);
-        int     (*set_wake)(struct uart_port *, u_int);
-        int     (*open)(struct uart_port *);
-        void    (*close)(struct uart_port *);
-};
-
-#if defined(CONFIG_SERIAL_ATMEL)
-void atmel_register_uart_fns(struct atmel_port_fns *fns);
-#else
-#define atmel_register_uart_fns(fns) do { } while (0)
-#endif
-
-
diff --git a/arch/arm/include/asm/mach/serial_sa1100.h b/arch/arm/include/asm/mach/serial_sa1100.h
deleted file mode 100644
index d09064bf95a0..000000000000
--- a/arch/arm/include/asm/mach/serial_sa1100.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- *  arch/arm/include/asm/mach/serial_sa1100.h
- *
- *  Author: Nicolas Pitre
- *
- * Moved and changed lots, Russell King
- *
- * Low level machine dependent UART functions.
- */
-
-struct uart_port;
-struct uart_info;
-
-/*
- * This is a temporary structure for registering these
- * functions; it is intended to be discarded after boot.
- */
-struct sa1100_port_fns {
-        void    (*set_mctrl)(struct uart_port *, u_int);
-        u_int   (*get_mctrl)(struct uart_port *);
-        void    (*pm)(struct uart_port *, u_int, u_int);
-        int     (*set_wake)(struct uart_port *, u_int);
-};
-
-#ifdef CONFIG_SERIAL_SA1100
-void sa1100_register_uart_fns(struct sa1100_port_fns *fns);
-void sa1100_register_uart(int idx, int port);
-#else
-#define sa1100_register_uart_fns(fns) do { } while (0)
-#define sa1100_register_uart(idx,port) do { } while (0)
-#endif
diff --git a/arch/arm/include/asm/mach/udc_pxa2xx.h b/arch/arm/include/asm/mach/udc_pxa2xx.h
deleted file mode 100644
index ea297ac70bc6..000000000000
--- a/arch/arm/include/asm/mach/udc_pxa2xx.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/*
- * arch/arm/include/asm/mach/udc_pxa2xx.h
- *
- * This supports machine-specific differences in how the PXA2xx
- * USB Device Controller (UDC) is wired.
- *
- * It is set in linux/arch/arm/mach-pxa/<machine>.c or in
- * linux/arch/mach-ixp4xx/<machine>.c and used in
- * the probe routine of linux/drivers/usb/gadget/pxa2xx_udc.c
- */
-
-struct pxa2xx_udc_mach_info {
-        int  (*udc_is_connected)(void);         /* do we see host? */
-        void (*udc_command)(int cmd);
-#define PXA2XX_UDC_CMD_CONNECT          0       /* let host see us */
-#define PXA2XX_UDC_CMD_DISCONNECT       1       /* so host won't see us */
-
-        /* Boards following the design guidelines in the developer's manual,
-         * with on-chip GPIOs not Lubbock's weird hardware, can have a sane
-         * VBUS IRQ and omit the methods above.  Store the GPIO number
-         * here.  Note that sometimes the signals go through inverters...
-         */
-        bool    gpio_pullup_inverted;
-        int     gpio_pullup;                    /* high == pullup activated */
-};
-
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index 14965658a923..9f77e7804f3b 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -5,18 +5,15 @@
 
 typedef struct {
 #ifdef CONFIG_CPU_HAS_ASID
-        unsigned int id;
-        raw_spinlock_t id_lock;
+        u64 id;
 #endif
-        unsigned int kvm_seq;
+        unsigned int vmalloc_seq;
 } mm_context_t;
 
 #ifdef CONFIG_CPU_HAS_ASID
-#define ASID(mm)        ((mm)->context.id & 255)
-
-/* init_mm.context.id_lock should be initialized. */
-#define INIT_MM_CONTEXT(name)                                                 \
-        .context.id_lock    = __RAW_SPIN_LOCK_UNLOCKED(name.context.id_lock),
+#define ASID_BITS       8
+#define ASID_MASK       ((~0ULL) << ASID_BITS)
+#define ASID(mm)        ((mm)->context.id & ~ASID_MASK)
 #else
 #define ASID(mm)        (0)
 #endif
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
index 0306bc642c0d..e1f644bc7cc5 100644
--- a/arch/arm/include/asm/mmu_context.h
+++ b/arch/arm/include/asm/mmu_context.h
@@ -20,88 +20,12 @@
 #include <asm/proc-fns.h>
 #include <asm-generic/mm_hooks.h>
 
-void __check_kvm_seq(struct mm_struct *mm);
+void __check_vmalloc_seq(struct mm_struct *mm);
 
 #ifdef CONFIG_CPU_HAS_ASID
 
-/*
- * On ARMv6, we have the following structure in the Context ID:
- *
- * 31                         7          0
- * +-------------------------+-----------+
- * |      process ID         |   ASID    |
- * +-------------------------+-----------+
- * |              context ID             |
- * +-------------------------------------+
- *
- * The ASID is used to tag entries in the CPU caches and TLBs.
- * The context ID is used by debuggers and trace logic, and
- * should be unique within all running processes.
- */
-#define ASID_BITS               8
-#define ASID_MASK               ((~0) << ASID_BITS)
-#define ASID_FIRST_VERSION      (1 << ASID_BITS)
-
-extern unsigned int cpu_last_asid;
-
-void __init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-void __new_context(struct mm_struct *mm);
-void cpu_set_reserved_ttbr0(void);
-
-static inline void switch_new_context(struct mm_struct *mm)
-{
-        unsigned long flags;
-
-        __new_context(mm);
-
-        local_irq_save(flags);
-        cpu_switch_mm(mm->pgd, mm);
-        local_irq_restore(flags);
-}
-
-static inline void check_and_switch_context(struct mm_struct *mm,
-                                            struct task_struct *tsk)
-{
-        if (unlikely(mm->context.kvm_seq != init_mm.context.kvm_seq))
-                __check_kvm_seq(mm);
-
-        /*
-         * Required during context switch to avoid speculative page table
-         * walking with the wrong TTBR.
-         */
-        cpu_set_reserved_ttbr0();
-
-        if (!((mm->context.id ^ cpu_last_asid) >> ASID_BITS))
-                /*
-                 * The ASID is from the current generation, just switch to the
-                 * new pgd. This condition is only true for calls from
-                 * context_switch() and interrupts are already disabled.
-                 */
-                cpu_switch_mm(mm->pgd, mm);
-        else if (irqs_disabled())
-                /*
-                 * Defer the new ASID allocation until after the context
-                 * switch critical region since __new_context() cannot be
-                 * called with interrupts disabled (it sends IPIs).
-                 */
-                set_ti_thread_flag(task_thread_info(tsk), TIF_SWITCH_MM);
-        else
-                /*
-                 * That is a direct call to switch_mm() or activate_mm() with
-                 * interrupts enabled and a new context.
-                 */
-                switch_new_context(mm);
-}
-
-#define init_new_context(tsk,mm)        (__init_new_context(tsk,mm),0)
-
-#define finish_arch_post_lock_switch \
-        finish_arch_post_lock_switch
-static inline void finish_arch_post_lock_switch(void)
-{
-        if (test_and_clear_thread_flag(TIF_SWITCH_MM))
-                switch_new_context(current->mm);
-}
+void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk);
+#define init_new_context(tsk,mm)        ({ mm->context.id = 0; })
 
 #else   /* !CONFIG_CPU_HAS_ASID */
 
@@ -110,8 +34,8 @@ static inline void finish_arch_post_lock_switch(void)
 static inline void check_and_switch_context(struct mm_struct *mm,
                                             struct task_struct *tsk)
 {
-        if (unlikely(mm->context.kvm_seq != init_mm.context.kvm_seq))
-                __check_kvm_seq(mm);
+        if (unlikely(mm->context.vmalloc_seq != init_mm.context.vmalloc_seq))
+                __check_vmalloc_seq(mm);
 
         if (irqs_disabled())
                 /*
@@ -143,6 +67,7 @@ static inline void finish_arch_post_lock_switch(void)
 #endif  /* CONFIG_CPU_HAS_ASID */
 
 #define destroy_context(mm)             do { } while(0)
+#define activate_mm(prev,next)          switch_mm(prev, next, NULL)
 
 /*
  * This is called when "tsk" is about to enter lazy TLB mode.
@@ -186,6 +111,5 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
 }
 
 #define deactivate_mm(tsk,mm)   do { } while (0)
-#define activate_mm(prev,next)  switch_mm(prev, next, NULL)
 
 #endif
diff --git a/arch/arm/include/asm/percpu.h b/arch/arm/include/asm/percpu.h
new file mode 100644
index 000000000000..968c0a14e0a3
--- /dev/null
+++ b/arch/arm/include/asm/percpu.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2012 Calxeda, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _ASM_ARM_PERCPU_H_
+#define _ASM_ARM_PERCPU_H_
+
+/*
+ * Same as asm-generic/percpu.h, except that we store the per cpu offset
+ * in the TPIDRPRW. TPIDRPRW only exists on V6K and V7
+ */
+#if defined(CONFIG_SMP) && !defined(CONFIG_CPU_V6)
+static inline void set_my_cpu_offset(unsigned long off)
+{
+        /* Set TPIDRPRW */
+        asm volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (off) : "memory");
+}
+
+static inline unsigned long __my_cpu_offset(void)
+{
+        unsigned long off;
+        /* Read TPIDRPRW */
+        asm("mrc p15, 0, %0, c13, c0, 4" : "=r" (off) : : "memory");
+        return off;
+}
+#define __my_cpu_offset __my_cpu_offset()
+#else
+#define set_my_cpu_offset(x)    do {} while(0)
+
+#endif /* CONFIG_SMP */
+
+#include <asm-generic/percpu.h>
+
+#endif /* _ASM_ARM_PERCPU_H_ */
diff --git a/arch/arm/include/asm/perf_event.h b/arch/arm/include/asm/perf_event.h
index 625cd621a436..755877527cf9 100644
--- a/arch/arm/include/asm/perf_event.h
+++ b/arch/arm/include/asm/perf_event.h
@@ -21,4 +21,11 @@
 #define C(_x)                           PERF_COUNT_HW_CACHE_##_x
 #define CACHE_OP_UNSUPPORTED            0xFFFF
 
+#ifdef CONFIG_HW_PERF_EVENTS
+struct pt_regs;
+extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
+extern unsigned long perf_misc_flags(struct pt_regs *regs);
+#define perf_misc_flags(regs)   perf_misc_flags(regs)
+#endif
+
 #endif /* __ARM_PERF_EVENT_H__ */
diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
index 2317a71c8f8e..f97ee02386ee 100644
--- a/arch/arm/include/asm/pgtable-2level.h
+++ b/arch/arm/include/asm/pgtable-2level.h
@@ -115,6 +115,7 @@
  * The PTE table pointer refers to the hardware entries; the "Linux"
  * entries are stored 1024 bytes below.
  */
+#define L_PTE_VALID             (_AT(pteval_t, 1) << 0)         /* Valid */
 #define L_PTE_PRESENT           (_AT(pteval_t, 1) << 0)
 #define L_PTE_YOUNG             (_AT(pteval_t, 1) << 1)
 #define L_PTE_FILE              (_AT(pteval_t, 1) << 2) /* only when !PRESENT */
@@ -123,6 +124,7 @@
 #define L_PTE_USER              (_AT(pteval_t, 1) << 8)
 #define L_PTE_XN                (_AT(pteval_t, 1) << 9)
 #define L_PTE_SHARED            (_AT(pteval_t, 1) << 10)        /* shared(v6), coherent(xsc3) */
+#define L_PTE_NONE              (_AT(pteval_t, 1) << 11)
 
 /*
  * These are the memory types, defined to be compatible with
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index b24903549d1c..a3f37929940a 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -67,7 +67,8 @@
  * These bits overlap with the hardware bits but the naming is preserved for
  * consistency with the classic page table format.
  */
-#define L_PTE_PRESENT           (_AT(pteval_t, 3) << 0)         /* Valid */
+#define L_PTE_VALID             (_AT(pteval_t, 1) << 0)         /* Valid */
+#define L_PTE_PRESENT           (_AT(pteval_t, 3) << 0)         /* Present */
 #define L_PTE_FILE              (_AT(pteval_t, 1) << 2)         /* only when !PRESENT */
 #define L_PTE_USER              (_AT(pteval_t, 1) << 6)         /* AP[1] */
 #define L_PTE_RDONLY            (_AT(pteval_t, 1) << 7)         /* AP[2] */
@@ -76,6 +77,7 @@
 #define L_PTE_XN                (_AT(pteval_t, 1) << 54)        /* XN */
 #define L_PTE_DIRTY             (_AT(pteval_t, 1) << 55)        /* unused */
 #define L_PTE_SPECIAL           (_AT(pteval_t, 1) << 56)        /* unused */
+#define L_PTE_NONE              (_AT(pteval_t, 1) << 57)        /* PROT_NONE */
 
 /*
  * To be used in assembly code with the upper page attributes.
diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
index 08c12312a1f9..9c82f988c0e3 100644
--- a/arch/arm/include/asm/pgtable.h
+++ b/arch/arm/include/asm/pgtable.h
@@ -73,7 +73,7 @@ extern pgprot_t		pgprot_kernel;
 
 #define _MOD_PROT(p, b) __pgprot(pgprot_val(p) | (b))
 
-#define PAGE_NONE               _MOD_PROT(pgprot_user, L_PTE_XN | L_PTE_RDONLY)
+#define PAGE_NONE               _MOD_PROT(pgprot_user, L_PTE_XN | L_PTE_RDONLY | L_PTE_NONE)
 #define PAGE_SHARED             _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_XN)
 #define PAGE_SHARED_EXEC        _MOD_PROT(pgprot_user, L_PTE_USER)
 #define PAGE_COPY               _MOD_PROT(pgprot_user, L_PTE_USER | L_PTE_RDONLY | L_PTE_XN)
@@ -83,7 +83,7 @@ extern pgprot_t		pgprot_kernel;
 #define PAGE_KERNEL             _MOD_PROT(pgprot_kernel, L_PTE_XN)
 #define PAGE_KERNEL_EXEC        pgprot_kernel
 
-#define __PAGE_NONE             __pgprot(_L_PTE_DEFAULT | L_PTE_RDONLY | L_PTE_XN)
+#define __PAGE_NONE             __pgprot(_L_PTE_DEFAULT | L_PTE_RDONLY | L_PTE_XN | L_PTE_NONE)
 #define __PAGE_SHARED           __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_XN)
 #define __PAGE_SHARED_EXEC      __pgprot(_L_PTE_DEFAULT | L_PTE_USER)
 #define __PAGE_COPY             __pgprot(_L_PTE_DEFAULT | L_PTE_USER | L_PTE_RDONLY | L_PTE_XN)
@@ -203,9 +203,7 @@ static inline pte_t *pmd_page_vaddr(pmd_t pmd)
 #define pte_exec(pte)           (!(pte_val(pte) & L_PTE_XN))
 #define pte_special(pte)        (0)
 
-#define pte_present_user(pte) \
-        ((pte_val(pte) & (L_PTE_PRESENT | L_PTE_USER)) == \
-         (L_PTE_PRESENT | L_PTE_USER))
+#define pte_present_user(pte)  (pte_present(pte) && (pte_val(pte) & L_PTE_USER))
 
 #if __LINUX_ARM_ARCH__ < 6
 static inline void __sync_icache_dcache(pte_t pteval)
@@ -242,7 +240,7 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
 
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
-        const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER;
+        const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER | L_PTE_NONE;
         pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
         return pte;
 }
diff --git a/arch/arm/include/asm/pmu.h b/arch/arm/include/asm/pmu.h
index a26170dce02e..f24edad26c70 100644
--- a/arch/arm/include/asm/pmu.h
+++ b/arch/arm/include/asm/pmu.h
@@ -67,19 +67,19 @@ struct arm_pmu {
         cpumask_t       active_irqs;
         char            *name;
         irqreturn_t     (*handle_irq)(int irq_num, void *dev);
-        void            (*enable)(struct hw_perf_event *evt, int idx);
-        void            (*disable)(struct hw_perf_event *evt, int idx);
+        void            (*enable)(struct perf_event *event);
+        void            (*disable)(struct perf_event *event);
         int             (*get_event_idx)(struct pmu_hw_events *hw_events,
-                                         struct hw_perf_event *hwc);
+                                         struct perf_event *event);
         int             (*set_event_filter)(struct hw_perf_event *evt,
                                             struct perf_event_attr *attr);
-        u32             (*read_counter)(int idx);
-        void            (*write_counter)(int idx, u32 val);
-        void            (*start)(void);
-        void            (*stop)(void);
+        u32             (*read_counter)(struct perf_event *event);
+        void            (*write_counter)(struct perf_event *event, u32 val);
+        void            (*start)(struct arm_pmu *);
+        void            (*stop)(struct arm_pmu *);
         void            (*reset)(void *);
-        int             (*request_irq)(irq_handler_t handler);
-        void            (*free_irq)(void);
+        int             (*request_irq)(struct arm_pmu *, irq_handler_t handler);
+        void            (*free_irq)(struct arm_pmu *);
         int             (*map_event)(struct perf_event *event);
         int             num_events;
         atomic_t        active_events;
@@ -93,15 +93,11 @@ struct arm_pmu {
 
 extern const struct dev_pm_ops armpmu_dev_pm_ops;
 
-int armpmu_register(struct arm_pmu *armpmu, char *name, int type);
+int armpmu_register(struct arm_pmu *armpmu, int type);
 
-u64 armpmu_event_update(struct perf_event *event,
-                        struct hw_perf_event *hwc,
-                        int idx);
+u64 armpmu_event_update(struct perf_event *event);
 
-int armpmu_event_set_period(struct perf_event *event,
-                            struct hw_perf_event *hwc,
-                            int idx);
+int armpmu_event_set_period(struct perf_event *event);
 
 int armpmu_map_event(struct perf_event *event,
                      const unsigned (*event_map)[PERF_COUNT_HW_MAX],
diff --git a/arch/arm/include/asm/prom.h b/arch/arm/include/asm/prom.h
index aeae9c609df4..a219227c3e43 100644
--- a/arch/arm/include/asm/prom.h
+++ b/arch/arm/include/asm/prom.h
@@ -11,10 +11,13 @@
 #ifndef __ASMARM_PROM_H
 #define __ASMARM_PROM_H
 
+#define HAVE_ARCH_DEVTREE_FIXUPS
+
 #ifdef CONFIG_OF
 
 extern struct machine_desc *setup_machine_fdt(unsigned int dt_phys);
 extern void arm_dt_memblock_reserve(void);
+extern void __init arm_dt_init_cpu_maps(void);
 
 #else /* CONFIG_OF */
 
@@ -24,6 +27,7 @@ static inline struct machine_desc *setup_machine_fdt(unsigned int dt_phys)
 }
 
 static inline void arm_dt_memblock_reserve(void) { }
+static inline void arm_dt_init_cpu_maps(void) { }
 
 #endif /* CONFIG_OF */
 #endif /* ASMARM_PROM_H */
diff --git a/arch/arm/include/asm/signal.h b/arch/arm/include/asm/signal.h
index 5a7963dbd3fb..9a0ea6ab988f 100644
--- a/arch/arm/include/asm/signal.h
+++ b/arch/arm/include/asm/signal.h
@@ -35,5 +35,4 @@ struct k_sigaction {
 };
 
 #include <asm/sigcontext.h>
-#define ptrace_signal_deliver(regs, cookie) do { } while (0)
 #endif
diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
index 2e3be16c6766..d3a22bebe6ce 100644
--- a/arch/arm/include/asm/smp.h
+++ b/arch/arm/include/asm/smp.h
@@ -79,6 +79,7 @@ extern void cpu_die(void);
 
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
+extern void arch_send_wakeup_ipi_mask(const struct cpumask *mask);
 
 struct smp_operations {
 #ifdef CONFIG_SMP
diff --git a/arch/arm/include/asm/smp_plat.h b/arch/arm/include/asm/smp_plat.h
index 558d6c80aca9..aaa61b6f50ff 100644
--- a/arch/arm/include/asm/smp_plat.h
+++ b/arch/arm/include/asm/smp_plat.h
@@ -5,6 +5,9 @@
 #ifndef __ASMARM_SMP_PLAT_H
 #define __ASMARM_SMP_PLAT_H
 
+#include <linux/cpumask.h>
+#include <linux/err.h>
+
 #include <asm/cputype.h>
 
 /*
@@ -48,5 +51,19 @@ static inline int cache_ops_need_broadcast(void)
  */
 extern int __cpu_logical_map[];
 #define cpu_logical_map(cpu)    __cpu_logical_map[cpu]
+/*
+ * Retrieve logical cpu index corresponding to a given MPIDR[23:0]
+ *  - mpidr: MPIDR[23:0] to be used for the look-up
+ *
+ * Returns the cpu logical index or -EINVAL on look-up error
+ */
+static inline int get_logical_index(u32 mpidr)
+{
+        int cpu;
+        for (cpu = 0; cpu < nr_cpu_ids; cpu++)
+                if (cpu_logical_map(cpu) == mpidr)
+                        return cpu;
+        return -EINVAL;
+}
 
 #endif
diff --git a/arch/arm/include/asm/syscall.h b/arch/arm/include/asm/syscall.h
index 9fdded6b1089..f1d96d4e8092 100644
--- a/arch/arm/include/asm/syscall.h
+++ b/arch/arm/include/asm/syscall.h
@@ -7,6 +7,8 @@
 #ifndef _ASM_ARM_SYSCALL_H
 #define _ASM_ARM_SYSCALL_H
 
+#include <linux/audit.h> /* for AUDIT_ARCH_* */
+#include <linux/elf.h> /* for ELF_EM */
 #include <linux/err.h>
 #include <linux/sched.h>
 
@@ -95,4 +97,11 @@ static inline void syscall_set_arguments(struct task_struct *task,
         memcpy(&regs->ARM_r0 + i, args, n * sizeof(args[0]));
 }
 
+static inline int syscall_get_arch(struct task_struct *task,
+                                   struct pt_regs *regs)
+{
+        /* ARM tasks don't change audit architectures on the fly. */
+        return AUDIT_ARCH_ARM;
+}
+
 #endif /* _ASM_ARM_SYSCALL_H */
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 8477b4c1d39f..cddda1f41f0f 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -151,10 +151,10 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define TIF_SYSCALL_TRACE       8
 #define TIF_SYSCALL_AUDIT       9
 #define TIF_SYSCALL_TRACEPOINT  10
+#define TIF_SECCOMP             11      /* seccomp syscall filtering active */
 #define TIF_USING_IWMMXT        17
 #define TIF_MEMDIE              18      /* is terminating due to OOM killer */
 #define TIF_RESTORE_SIGMASK     20
-#define TIF_SECCOMP             21
 #define TIF_SWITCH_MM           22      /* deferred switch_mm */
 
 #define _TIF_SIGPENDING         (1 << TIF_SIGPENDING)
@@ -163,11 +163,12 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
 #define _TIF_SYSCALL_TRACE      (1 << TIF_SYSCALL_TRACE)
 #define _TIF_SYSCALL_AUDIT      (1 << TIF_SYSCALL_AUDIT)
 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
-#define _TIF_USING_IWMMXT       (1 << TIF_USING_IWMMXT)
 #define _TIF_SECCOMP            (1 << TIF_SECCOMP)
+#define _TIF_USING_IWMMXT       (1 << TIF_USING_IWMMXT)
 
 /* Checks for any syscall work in entry-common.S */
-#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT)
+#define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
+                           _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
 
 /*
  * Change these and you break ASM code in entry-common.S
diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
index 8f60b6e6bd41..7cd13cc62624 100644
--- a/arch/arm/include/asm/unistd.h
+++ b/arch/arm/include/asm/unistd.h
@@ -42,6 +42,9 @@
 #define __ARCH_WANT_SYS_SOCKETCALL
 #endif
 #define __ARCH_WANT_SYS_EXECVE
+#define __ARCH_WANT_SYS_FORK
+#define __ARCH_WANT_SYS_VFORK
+#define __ARCH_WANT_SYS_CLONE
 
 /*
  * "Conditional" syscalls
diff --git a/arch/arm/include/asm/xen/interface.h b/arch/arm/include/asm/xen/interface.h
index 5000397134b4..1151188bcd83 100644
--- a/arch/arm/include/asm/xen/interface.h
+++ b/arch/arm/include/asm/xen/interface.h
@@ -49,6 +49,7 @@ DEFINE_GUEST_HANDLE(void);
 DEFINE_GUEST_HANDLE(uint64_t);
 DEFINE_GUEST_HANDLE(uint32_t);
 DEFINE_GUEST_HANDLE(xen_pfn_t);
+DEFINE_GUEST_HANDLE(xen_ulong_t);
 
 /* Maximum number of virtual CPUs in multi-processor guests. */
 #define MAX_VIRT_CPUS 1
diff --git a/arch/arm/include/debug/imx.S b/arch/arm/include/debug/imx.S
new file mode 100644
index 000000000000..0c4e17d4d359
--- /dev/null
+++ b/arch/arm/include/debug/imx.S
@@ -0,0 +1,74 @@
+/* arch/arm/mach-imx/include/mach/debug-macro.S
+ *
+ * Debugging macro include header
+ *
+ *  Copyright (C) 1994-1999 Russell King
+ *  Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+#define IMX6Q_UART1_BASE_ADDR   0x02020000
+#define IMX6Q_UART2_BASE_ADDR   0x021e8000
+#define IMX6Q_UART3_BASE_ADDR   0x021ec000
+#define IMX6Q_UART4_BASE_ADDR   0x021f0000
+#define IMX6Q_UART5_BASE_ADDR   0x021f4000
+
+/*
+ * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
+ * of IMX6Q_UART##n##_BASE_ADDR.
+ */
+#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
+#define IMX6Q_UART_BASE(n)      IMX6Q_UART_BASE_ADDR(n)
+#define IMX6Q_DEBUG_UART_BASE   IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
+
+#ifdef CONFIG_DEBUG_IMX1_UART
+#define UART_PADDR      0x00206000
+#elif defined (CONFIG_DEBUG_IMX25_UART)
+#define UART_PADDR      0x43f90000
+#elif defined (CONFIG_DEBUG_IMX21_IMX27_UART)
+#define UART_PADDR      0x1000a000
+#elif defined (CONFIG_DEBUG_IMX31_IMX35_UART)
+#define UART_PADDR      0x43f90000
+#elif defined (CONFIG_DEBUG_IMX51_UART)
+#define UART_PADDR      0x73fbc000
+#elif defined (CONFIG_DEBUG_IMX50_IMX53_UART)
+#define UART_PADDR      0x53fbc000
+#elif defined (CONFIG_DEBUG_IMX6Q_UART)
+#define UART_PADDR      IMX6Q_DEBUG_UART_BASE
+#endif
+
+/*
+ * FIXME: This is a copy of IMX_IO_P2V in hardware.h, and needs to
+ * stay sync with that.  It's hard to maintain, and should be fixed
+ * globally for multi-platform build to use a fixed virtual address
+ * for low-level debug uart port across platforms.
+ */
+#define IMX_IO_P2V(x)   (                                               \
+                        (((x) & 0x80000000) >> 7) |                     \
+                        (0xf4000000 +                                   \
+                        (((x) & 0x50000000) >> 6) +                     \
+                        (((x) & 0x0b000000) >> 4) +                     \
+                        (((x) & 0x000fffff))))
+
+#define UART_VADDR      IMX_IO_P2V(UART_PADDR)
+
+                .macro  addruart, rp, rv, tmp
+                ldr     \rp, =UART_PADDR        @ physical
+                ldr     \rv, =UART_VADDR        @ virtual
+                .endm
+
+                .macro  senduart,rd,rx
+                str     \rd, [\rx, #0x40]       @ TXDATA
+                .endm
+
+                .macro  waituart,rd,rx
+                .endm
+
+                .macro  busyuart,rd,rx
+1002:           ldr     \rd, [\rx, #0x98]       @ SR2
+                tst     \rd, #1 << 3            @ TXDC
+                beq     1002b                   @ wait until transmit done
+                .endm
diff --git a/arch/arm/include/debug/sunxi.S b/arch/arm/include/debug/sunxi.S
new file mode 100644
index 000000000000..04eb56d5db2c
--- /dev/null
+++ b/arch/arm/include/debug/sunxi.S
@@ -0,0 +1,27 @@
+/*
+ * Early serial output macro for Allwinner A1X SoCs
+ *
+ * Copyright (C) 2012 Maxime Ripard
+ *
+ * Maxime Ripard <maxime.ripard@free-electrons.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+*/
+
+#if defined(CONFIG_DEBUG_SUNXI_UART0)
+#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28000
+#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28000
+#elif defined(CONFIG_DEBUG_SUNXI_UART1)
+#define SUNXI_UART_DEBUG_PHYS_BASE 0x01c28400
+#define SUNXI_UART_DEBUG_VIRT_BASE 0xf1c28400
+#endif
+
+        .macro  addruart, rp, rv, tmp
+        ldr     \rp, =SUNXI_UART_DEBUG_PHYS_BASE
+        ldr     \rv, =SUNXI_UART_DEBUG_VIRT_BASE
+        .endm
+
+#define UART_SHIFT      2
+#include <asm/hardware/debug-8250.S>
diff --git a/arch/arm/include/debug/tegra.S b/arch/arm/include/debug/tegra.S
new file mode 100644
index 000000000000..883d7c22fd9d
--- /dev/null
+++ b/arch/arm/include/debug/tegra.S
@@ -0,0 +1,223 @@
+/*
+ * Copyright (C) 2010,2011 Google, Inc.
+ * Copyright (C) 2011-2012 NVIDIA CORPORATION. All Rights Reserved.
+ *
+ * Author:
+ *      Colin Cross <ccross@google.com>
+ *      Erik Gilling <konkers@google.com>
+ *      Doug Anderson <dianders@chromium.org>
+ *      Stephen Warren <swarren@nvidia.com>
+ *
+ * Portions based on mach-omap2's debug-macro.S
+ * Copyright (C) 1994-1999 Russell King
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/serial_reg.h>
+
+#define UART_SHIFT 2
+
+/* Physical addresses */
+#define TEGRA_CLK_RESET_BASE            0x60006000
+#define TEGRA_APB_MISC_BASE             0x70000000
+#define TEGRA_UARTA_BASE                0x70006000
+#define TEGRA_UARTB_BASE                0x70006040
+#define TEGRA_UARTC_BASE                0x70006200
+#define TEGRA_UARTD_BASE                0x70006300
+#define TEGRA_UARTE_BASE                0x70006400
+#define TEGRA_PMC_BASE                  0x7000e400
+
+#define TEGRA_CLK_RST_DEVICES_L         (TEGRA_CLK_RESET_BASE + 0x04)
+#define TEGRA_CLK_RST_DEVICES_H         (TEGRA_CLK_RESET_BASE + 0x08)
+#define TEGRA_CLK_RST_DEVICES_U         (TEGRA_CLK_RESET_BASE + 0x0c)
+#define TEGRA_CLK_OUT_ENB_L             (TEGRA_CLK_RESET_BASE + 0x10)
+#define TEGRA_CLK_OUT_ENB_H             (TEGRA_CLK_RESET_BASE + 0x14)
+#define TEGRA_CLK_OUT_ENB_U             (TEGRA_CLK_RESET_BASE + 0x18)
+#define TEGRA_PMC_SCRATCH20             (TEGRA_PMC_BASE + 0xa0)
+#define TEGRA_APB_MISC_GP_HIDREV        (TEGRA_APB_MISC_BASE + 0x804)
+
+/*
+ * Must be 1MB-aligned since a 1MB mapping is used early on.
+ * Must not overlap with regions in mach-tegra/io.c:tegra_io_desc[].
+ */
+#define UART_VIRTUAL_BASE               0xfe100000
+
+#define checkuart(rp, rv, lhu, bit, uart) \
+                /* Load address of CLK_RST register */ \
+                movw    rp, #TEGRA_CLK_RST_DEVICES_##lhu & 0xffff ; \
+                movt    rp, #TEGRA_CLK_RST_DEVICES_##lhu >> 16 ; \
+                /* Load value from CLK_RST register */ \
+                ldr     rp, [rp, #0] ; \
+                /* Test UART's reset bit */ \
+                tst     rp, #(1 << bit) ; \
+                /* If set, can't use UART; jump to save no UART */ \
+                bne     90f ; \
+                /* Load address of CLK_OUT_ENB register */ \
+                movw    rp, #TEGRA_CLK_OUT_ENB_##lhu & 0xffff ; \
+                movt    rp, #TEGRA_CLK_OUT_ENB_##lhu >> 16 ; \
+                /* Load value from CLK_OUT_ENB register */ \
+                ldr     rp, [rp, #0] ; \
+                /* Test UART's clock enable bit */ \
+                tst     rp, #(1 << bit) ; \
+                /* If clear, can't use UART; jump to save no UART */ \
+                beq     90f ; \
+                /* Passed all tests, load address of UART registers */ \
+                movw    rp, #TEGRA_UART##uart##_BASE & 0xffff ; \
+                movt    rp, #TEGRA_UART##uart##_BASE >> 16 ; \
+                /* Jump to save UART address */ \
+                b 91f
+
+                .macro  addruart, rp, rv, tmp
+                adr     \rp, 99f                @ actual addr of 99f
+                ldr     \rv, [\rp]              @ linked addr is stored there
+                sub     \rv, \rv, \rp           @ offset between the two
+                ldr     \rp, [\rp, #4]          @ linked tegra_uart_config
+                sub     \tmp, \rp, \rv          @ actual tegra_uart_config
+                ldr     \rp, [\tmp]             @ Load tegra_uart_config
+                cmp     \rp, #1                 @ needs initialization?
+                bne     100f                    @ no; go load the addresses
+                mov     \rv, #0                 @ yes; record init is done
+                str     \rv, [\tmp]
+
+#ifdef CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA
+                /* Check ODMDATA */
+10:             movw    \rp, #TEGRA_PMC_SCRATCH20 & 0xffff
+                movt    \rp, #TEGRA_PMC_SCRATCH20 >> 16
+                ldr     \rp, [\rp, #0]          @ Load PMC_SCRATCH20
+                ubfx    \rv, \rp, #18, #2       @ 19:18 are console type
+                cmp     \rv, #2                 @ 2 and 3 mean DCC, UART
+                beq     11f                     @ some boards swap the meaning
+                cmp     \rv, #3                 @ so accept either
+                bne     90f
+11:             ubfx    \rv, \rp, #15, #3       @ 17:15 are UART ID
+                cmp     \rv, #0                 @ UART 0?
+                beq     20f
+                cmp     \rv, #1                 @ UART 1?
+                beq     21f
+                cmp     \rv, #2                 @ UART 2?
+                beq     22f
+                cmp     \rv, #3                 @ UART 3?
+                beq     23f
+                cmp     \rv, #4                 @ UART 4?
+                beq     24f
+                b       90f                     @ invalid
+#endif
+
+#if defined(CONFIG_TEGRA_DEBUG_UARTA) || \
+    defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA)
+                /* Check UART A validity */
+20:             checkuart(\rp, \rv, L, 6, A)
+#endif
+
+#if defined(CONFIG_TEGRA_DEBUG_UARTB) || \
+    defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA)
+                /* Check UART B validity */
+21:             checkuart(\rp, \rv, L, 7, B)
+#endif
+
+#if defined(CONFIG_TEGRA_DEBUG_UARTC) || \
+    defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA)
+                /* Check UART C validity */
+22:             checkuart(\rp, \rv, H, 23, C)
+#endif
+
+#if defined(CONFIG_TEGRA_DEBUG_UARTD) || \
+    defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA)
+                /* Check UART D validity */
+23:             checkuart(\rp, \rv, U, 1, D)
+#endif
+
+#if defined(CONFIG_TEGRA_DEBUG_UARTE) || \
+    defined(CONFIG_TEGRA_DEBUG_UART_AUTO_ODMDATA)
+                /* Check UART E validity */
+24:
+                checkuart(\rp, \rv, U, 2, E)
+#endif
+
+                /* No valid UART found */
+90:             mov     \rp, #0
+                /* fall through */
+
+                /* Record whichever UART we chose */
+91:             str     \rp, [\tmp, #4]         @ Store in tegra_uart_phys
+                cmp     \rp, #0                 @ Valid UART address?
+                bne     92f                     @ Yes, go process it
+                str     \rp, [\tmp, #8]         @ Store 0 in tegra_uart_virt
+                b       100f                    @ Done
+92:             and     \rv, \rp, #0xffffff     @ offset within 1MB section
+                add     \rv, \rv, #UART_VIRTUAL_BASE
+                str     \rv, [\tmp, #8]         @ Store in tegra_uart_virt
+                movw    \rv, #TEGRA_APB_MISC_GP_HIDREV & 0xffff
+                movt    \rv, #TEGRA_APB_MISC_GP_HIDREV >> 16
+                ldr     \rv, [\rv, #0]          @ Load HIDREV
+                ubfx    \rv, \rv, #8, #8        @ 15:8 are SoC version
+                cmp     \rv, #0x20              @ Tegra20?
+                moveq   \rv, #0x75              @ Tegra20 divisor
+                movne   \rv, #0xdd              @ Tegra30 divisor
+                str     \rv, [\tmp, #12]        @ Save divisor to scratch
+                /* uart[UART_LCR] = UART_LCR_WLEN8 | UART_LCR_DLAB; */
+                mov     \rv, #UART_LCR_WLEN8 | UART_LCR_DLAB
+                str     \rv, [\rp, #UART_LCR << UART_SHIFT]
+                /* uart[UART_DLL] = div & 0xff; */
+                ldr     \rv, [\tmp, #12]
+                and     \rv, \rv, #0xff
+                str     \rv, [\rp, #UART_DLL << UART_SHIFT]
+                /* uart[UART_DLM] = div >> 8; */
+                ldr     \rv, [\tmp, #12]
+                lsr     \rv, \rv, #8
+                str     \rv, [\rp, #UART_DLM << UART_SHIFT]
+                /* uart[UART_LCR] = UART_LCR_WLEN8; */
+                mov     \rv, #UART_LCR_WLEN8
+                str     \rv, [\rp, #UART_LCR << UART_SHIFT]
+                b       100f
+
+                .align
+99:             .word   .
+                .word   tegra_uart_config
+                .ltorg
+
+                /* Load previously selected UART address */
+100:            ldr     \rp, [\tmp, #4]         @ Load tegra_uart_phys
+                ldr     \rv, [\tmp, #8]         @ Load tegra_uart_virt
+                .endm
+
+/*
+ * Code below is swiped from <asm/hardware/debug-8250.S>, but add an extra
+ * check to make sure that the UART address is actually valid.
+ */
+
+                .macro  senduart, rd, rx
+                cmp     \rx, #0
+                strneb  \rd, [\rx, #UART_TX << UART_SHIFT]
+1001:
+                .endm
+
+                .macro  busyuart, rd, rx
+                cmp     \rx, #0
+                beq     1002f
+1001:           ldrb    \rd, [\rx, #UART_LSR << UART_SHIFT]
+                and     \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
+                teq     \rd, #UART_LSR_TEMT | UART_LSR_THRE
+                bne     1001b
+1002:
+                .endm
+
+                .macro  waituart, rd, rx
+#ifdef FLOW_CONTROL
+                cmp     \rx, #0
+                beq     1002f
+1001:           ldrb    \rd, [\rx, #UART_MSR << UART_SHIFT]
+                tst     \rd, #UART_MSR_CTS
+                beq     1001b
+1002:
+#endif
+                .endm
diff --git a/arch/arm/include/debug/vexpress.S b/arch/arm/include/debug/vexpress.S
index 9f509f55d078..dc8e882a6257 100644
--- a/arch/arm/include/debug/vexpress.S
+++ b/arch/arm/include/debug/vexpress.S
@@ -21,14 +21,17 @@
 #if defined(CONFIG_DEBUG_VEXPRESS_UART0_DETECT)
 
                 .macro  addruart,rp,rv,tmp
+                .arch   armv7-a
 
                 @ Make an educated guess regarding the memory map:
-                @ - the original A9 core tile, which has MPCore peripherals
-                @   located at 0x1e000000, should use UART at 0x10009000
+                @ - the original A9 core tile (based on ARM Cortex-A9 r0p1)
+                @   should use UART at 0x10009000
                 @ - all other (RS1 complaint) tiles use UART mapped
                 @   at 0x1c090000
-                mrc     p15, 4, \tmp, c15, c0, 0
-                cmp     \tmp, #0x1e000000
+                mrc     p15, 0, \rp, c0, c0, 0
+                movw    \rv, #0xc091
+                movt    \rv, #0x410f
+                cmp     \rp, \rv
 
                 @ Original memory map
                 moveq   \rp, #DEBUG_LL_UART_OFFSET
diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S
new file mode 100644
index 000000000000..f9aa9740a73f
--- /dev/null
+++ b/arch/arm/include/debug/zynq.S
@@ -0,0 +1,51 @@
+/*
+ * Debugging macro include header
+ *
+ *  Copyright (C) 2011 Xilinx
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+#define UART_CR_OFFSET          0x00  /* Control Register [8:0] */
+#define UART_SR_OFFSET          0x2C  /* Channel Status [11:0] */
+#define UART_FIFO_OFFSET        0x30  /* FIFO [15:0] or [7:0] */
+
+#define UART_SR_TXFULL          0x00000010      /* TX FIFO full */
+#define UART_SR_TXEMPTY         0x00000008      /* TX FIFO empty */
+
+#define UART0_PHYS              0xE0000000
+#define UART1_PHYS              0xE0001000
+#define UART_SIZE               SZ_4K
+#define UART_VIRT               0xF0001000
+
+#if IS_ENABLED(CONFIG_DEBUG_ZYNQ_UART1)
+# define LL_UART_PADDR          UART1_PHYS
+#else
+# define LL_UART_PADDR          UART0_PHYS
+#endif
+
+#define LL_UART_VADDR           UART_VIRT
+
+                .macro  addruart, rp, rv, tmp
+                ldr     \rp, =LL_UART_PADDR     @ physical
+                ldr     \rv, =LL_UART_VADDR     @ virtual
+                .endm
+
+                .macro  senduart,rd,rx
+                str     \rd, [\rx, #UART_FIFO_OFFSET]   @ TXDATA
+                .endm
+
+                .macro  waituart,rd,rx
+                .endm
+
+                .macro  busyuart,rd,rx
+1002:           ldr     \rd, [\rx, #UART_SR_OFFSET]     @ get status register
+                tst     \rd, #UART_SR_TXFULL            @
+                bne     1002b                   @ wait if FIFO is full
+                .endm