Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus

Pull MIPS updates from Ralf Baechle:
 "This is the main MIPS pull request for 4.9:

  MIPS core arch code:
   - traps: 64bit kernels should read CP0_EBase 64bit
   - traps: Convert ebase to KSEG0
   - c-r4k: Drop bc_wback_inv() from icache flush
   - c-r4k: Split user/kernel flush_icache_range()
   - cacheflush: Use __flush_icache_user_range()
   - uprobes: Flush icache via kernel address
   - KVM: Use __local_flush_icache_user_range()
   - c-r4k: Fix flush_icache_range() for EVA
   - Fix -mabi=64 build of vdso.lds
   - VDSO: Drop duplicated -I*/-E* aflags
   - tracing: move insn_has_delay_slot to a shared header
   - tracing: disable uprobe/kprobe on compact branch instructions
   - ptrace: Fix regs_return_value for kernel context
   - Squash lines for simple wrapper functions
   - Move identification of VP(E) into proc.c from smp-mt.c
   - Add definitions of SYNC barrierstype values
   - traps: Ensure full EBase is written
   - tlb-r4k: If there are wired entries, don't use TLBINVF
   - Sanitise coherentio semantics
   - dma-default: Don't check hw_coherentio if device is non-coherent
   - Support per-device DMA coherence
   - Adjust MIPS64 CAC_BASE to reflect Config.K0
   - Support generating Flattened Image Trees (.itb)
   - generic: Introduce generic DT-based board support
   - generic: Convert SEAD-3 to a generic board
   - Enable hardened usercopy
   - Don't specify STACKPROTECTOR in defconfigs

  Octeon:
   - Delete dead code and files across the platform.
   - Change to use all memory into use by default.
   - Rename upper case variables in setup code to lowercase.
   - Delete legacy hack for broken bootloaders.
   - Leave maintaining the link state to the actual ethernet/PHY drivers.
   - Add DTS for D-Link DSR-500N.
   - Fix PCI interrupt routing on D-Link DSR-500N.

  Pistachio:
   - Remove ANDROID_TIMED_OUTPUT from defconfig

  TX39xx:
   - Move GPIO setup from .mem_setup() to .arch_init()
   - Convert to Common Clock Framework

  TX49xx:
   - Move GPIO setup from .mem_setup() to .arch_init()
   - Convert to Common Clock Framework

  txx9wdt:
   - Add missing clock (un)prepare calls for CCF

  BMIPS:
   - Add PW, GPIO SDHCI and NAND device node names
   - Support APPENDED_DTB
   - Add missing bcm97435svmb to DT_NONE
   - Rename bcm96358nb4ser to bcm6358-neufbox4-sercom
   - Add DT examples for BCM63268, BCM3368 and BCM6362
   - Add support for BCM3368 and BCM6362

  PCI
   - Reduce stack frame usage
   - Use struct list_head lists
   - Support for CONFIG_PCI_DOMAINS_GENERIC
   - Make pcibios_set_cache_line_size an initcall
   - Inline pcibios_assign_all_busses
   - Split pci.c into pci.c & pci-legacy.c
   - Introduce CONFIG_PCI_DRIVERS_LEGACY
   - Support generic drivers

  CPC
   - Convert bare 'unsigned' to 'unsigned int'
   - Avoid lock when MIPS CM >= 3 is present

  GIC:
   - Delete unused file smp-gic.c

  mt7620:
   - Delete unnecessary assignment for the field "owner" from PCI

  BCM63xx:
   - Let clk_disable() return immediately if clk is NULL

  pm-cps:
   - Change FSB workaround to CPU blacklist
   - Update comments on barrier instructions
   - Use MIPS standard lightweight ordering barrier
   - Use MIPS standard completion barrier
   - Remove selection of sync types
   - Add MIPSr6 CPU support
   - Support CM3 changes to Coherence Enable Register

  SMP:
   - Wrap call to mips_cpc_lock_other in mips_cm_lock_other
   - Introduce mechanism for freeing and allocating IPIs

  cpuidle:
   - cpuidle-cps: Enable use with MIPSr6 CPUs.

  SEAD3:
   - Rewrite to use DT and generic kernel feature.

  USB:
   - host: ehci-sead3: Remove SEAD-3 EHCI code

  FBDEV:
   - cobalt_lcdfb: Drop SEAD3 support

  dt-bindings:
   -  Document a binding for simple ASCII LCDs

  auxdisplay:
   - img-ascii-lcd: driver for simple ASCII LCD displays

  irqchip i8259:
   - i8259: Add domain before mapping parent irq
   - i8259: Allow platforms to override poll function
   - i8259: Remove unused i8259A_irq_pending

  Malta:
   - Rewrite to use DT

  of/platform:
   - Probe "isa" busses by default

  CM:
   - Print CM error reports upon bus errors

  Module:
   - Migrate exception table users off module.h and onto extable.h
   - Make various drivers explicitly non-modular:
   - Audit and remove any unnecessary uses of module.h

  mailmap:
   - Canonicalize to Qais' current email address.

  Documentation:
   - MIPS supports HAVE_REGS_AND_STACK_ACCESS_API

  Loongson1C:
   - Add CPU support for Loongson1C
   - Add board support
   - Add defconfig
   - Add RTC support for Loongson1C board

  All this except one Documentation fix has sat in linux-next and has
  survived Imagination's automated build test system"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (127 commits)
  Documentation: MIPS supports HAVE_REGS_AND_STACK_ACCESS_API
  MIPS: ptrace: Fix regs_return_value for kernel context
  MIPS: VDSO: Drop duplicated -I*/-E* aflags
  MIPS: Fix -mabi=64 build of vdso.lds
  MIPS: Enable hardened usercopy
  MIPS: generic: Convert SEAD-3 to a generic board
  MIPS: generic: Introduce generic DT-based board support
  MIPS: Support generating Flattened Image Trees (.itb)
  MIPS: Adjust MIPS64 CAC_BASE to reflect Config.K0
  MIPS: Print CM error reports upon bus errors
  MIPS: Support per-device DMA coherence
  MIPS: dma-default: Don't check hw_coherentio if device is non-coherent
  MIPS: Sanitise coherentio semantics
  MIPS: PCI: Support generic drivers
  MIPS: PCI: Introduce CONFIG_PCI_DRIVERS_LEGACY
  MIPS: PCI: Split pci.c into pci.c & pci-legacy.c
  MIPS: PCI: Inline pcibios_assign_all_busses
  MIPS: PCI: Make pcibios_set_cache_line_size an initcall
  MIPS: PCI: Support for CONFIG_PCI_DOMAINS_GENERIC
  MIPS: PCI: Use struct list_head lists
  ...

33 files changed, 449 insertions, 737 deletions

diff --git a/arch/mips/include/asm/addrspace.h b/arch/mips/include/asm/addrspace.h
index c5b04e752e97..4856adc8906e 100644
--- a/arch/mips/include/asm/addrspace.h
+++ b/arch/mips/include/asm/addrspace.h
@@ -126,8 +126,7 @@
 #define PHYS_TO_XKSEG_UNCACHED(p)	PHYS_TO_XKPHYS(K_CALG_UNCACHED, (p))
 #define PHYS_TO_XKSEG_CACHED(p)		PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE, (p))
 #define XKPHYS_TO_PHYS(p)		((p) & TO_PHYS_MASK)
-#define PHYS_TO_XKPHYS(cm, a)		(_CONST64_(0x8000000000000000) | \
-					 (_CONST64_(cm) << 59) | (a))
+#define PHYS_TO_XKPHYS(cm, a)		(XKPHYS | (_ACAST64_(cm) << 59) | (a))
 
 /*
  * The ultimate limited of the 64-bit MIPS architecture:  2 bits for selecting
diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
index d296633d890e..a5eb1bb199a7 100644
--- a/arch/mips/include/asm/barrier.h
+++ b/arch/mips/include/asm/barrier.h
@@ -10,6 +10,102 @@
 
 #include <asm/addrspace.h>
 
+/*
+ * Sync types defined by the MIPS architecture (document MD00087 table 6.5)
+ * These values are used with the sync instruction to perform memory barriers.
+ * Types of ordering guarantees available through the SYNC instruction:
+ * - Completion Barriers
+ * - Ordering Barriers
+ * As compared to the completion barrier, the ordering barrier is a
+ * lighter-weight operation as it does not require the specified instructions
+ * before the SYNC to be already completed. Instead it only requires that those
+ * specified instructions which are subsequent to the SYNC in the instruction
+ * stream are never re-ordered for processing ahead of the specified
+ * instructions which are before the SYNC in the instruction stream.
+ * This potentially reduces how many cycles the barrier instruction must stall
+ * before it completes.
+ * Implementations that do not use any of the non-zero values of stype to define
+ * different barriers, such as ordering barriers, must make those stype values
+ * act the same as stype zero.
+ */
+
+/*
+ * Completion barriers:
+ * - Every synchronizable specified memory instruction (loads or stores or both)
+ *   that occurs in the instruction stream before the SYNC instruction must be
+ *   already globally performed before any synchronizable specified memory
+ *   instructions that occur after the SYNC are allowed to be performed, with
+ *   respect to any other processor or coherent I/O module.
+ *
+ * - The barrier does not guarantee the order in which instruction fetches are
+ *   performed.
+ *
+ * - A stype value of zero will always be defined such that it performs the most
+ *   complete set of synchronization operations that are defined.This means
+ *   stype zero always does a completion barrier that affects both loads and
+ *   stores preceding the SYNC instruction and both loads and stores that are
+ *   subsequent to the SYNC instruction. Non-zero values of stype may be defined
+ *   by the architecture or specific implementations to perform synchronization
+ *   behaviors that are less complete than that of stype zero. If an
+ *   implementation does not use one of these non-zero values to define a
+ *   different synchronization behavior, then that non-zero value of stype must
+ *   act the same as stype zero completion barrier. This allows software written
+ *   for an implementation with a lighter-weight barrier to work on another
+ *   implementation which only implements the stype zero completion barrier.
+ *
+ * - A completion barrier is required, potentially in conjunction with SSNOP (in
+ *   Release 1 of the Architecture) or EHB (in Release 2 of the Architecture),
+ *   to guarantee that memory reference results are visible across operating
+ *   mode changes. For example, a completion barrier is required on some
+ *   implementations on entry to and exit from Debug Mode to guarantee that
+ *   memory effects are handled correctly.
+ */
+
+/*
+ * stype 0 - A completion barrier that affects preceding loads and stores and
+ * subsequent loads and stores.
+ * Older instructions which must reach the load/store ordering point before the
+ * SYNC instruction completes: Loads, Stores
+ * Younger instructions which must reach the load/store ordering point only
+ * after the SYNC instruction completes: Loads, Stores
+ * Older instructions which must be globally performed when the SYNC instruction
+ * completes: Loads, Stores
+ */
+#define STYPE_SYNC 0x0
+
+/*
+ * Ordering barriers:
+ * - Every synchronizable specified memory instruction (loads or stores or both)
+ *   that occurs in the instruction stream before the SYNC instruction must
+ *   reach a stage in the load/store datapath after which no instruction
+ *   re-ordering is possible before any synchronizable specified memory
+ *   instruction which occurs after the SYNC instruction in the instruction
+ *   stream reaches the same stage in the load/store datapath.
+ *
+ * - If any memory instruction before the SYNC instruction in program order,
+ *   generates a memory request to the external memory and any memory
+ *   instruction after the SYNC instruction in program order also generates a
+ *   memory request to external memory, the memory request belonging to the
+ *   older instruction must be globally performed before the time the memory
+ *   request belonging to the younger instruction is globally performed.
+ *
+ * - The barrier does not guarantee the order in which instruction fetches are
+ *   performed.
+ */
+
+/*
+ * stype 0x10 - An ordering barrier that affects preceding loads and stores and
+ * subsequent loads and stores.
+ * Older instructions which must reach the load/store ordering point before the
+ * SYNC instruction completes: Loads, Stores
+ * Younger instructions which must reach the load/store ordering point only
+ * after the SYNC instruction completes: Loads, Stores
+ * Older instructions which must be globally performed when the SYNC instruction
+ * completes: N/A
+ */
+#define STYPE_SYNC_MB 0x10
+
+
 #ifdef CONFIG_CPU_HAS_SYNC
 #define __sync()				\
 	__asm__ __volatile__(			\
diff --git a/arch/mips/include/asm/cacheflush.h b/arch/mips/include/asm/cacheflush.h
index 34ed22ec6c33..4812d1fed0c2 100644
--- a/arch/mips/include/asm/cacheflush.h
+++ b/arch/mips/include/asm/cacheflush.h
@@ -28,6 +28,7 @@
  *  - flush_cache_sigtramp() flush signal trampoline
  *  - flush_icache_all() flush the entire instruction cache
  *  - flush_data_cache_page() flushes a page from the data cache
+ *  - __flush_icache_user_range(start, end) flushes range of user instructions
  */
 
  /*
@@ -80,6 +81,10 @@ static inline void flush_icache_page(struct vm_area_struct *vma,
 
 extern void (*flush_icache_range)(unsigned long start, unsigned long end);
 extern void (*local_flush_icache_range)(unsigned long start, unsigned long end);
+extern void (*__flush_icache_user_range)(unsigned long start,
+					 unsigned long end);
+extern void (*__local_flush_icache_user_range)(unsigned long start,
+					       unsigned long end);
 
 extern void (*__flush_cache_vmap)(void);
 
diff --git a/arch/mips/include/asm/cpu-type.h b/arch/mips/include/asm/cpu-type.h
index fbe1881f28fc..bdd6dc18e65c 100644
--- a/arch/mips/include/asm/cpu-type.h
+++ b/arch/mips/include/asm/cpu-type.h
@@ -24,7 +24,8 @@ static inline int __pure __get_cpu_type(const int cpu_type)
 	case CPU_LOONGSON3:
 #endif
 
-#ifdef CONFIG_SYS_HAS_CPU_LOONGSON1B
+#if defined(CONFIG_SYS_HAS_CPU_LOONGSON1B) || \
+    defined(CONFIG_SYS_HAS_CPU_LOONGSON1C)
 	case CPU_LOONGSON1:
 #endif
 
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index f672df8b26d0..9a8372484edc 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -240,6 +240,7 @@
 #define PRID_REV_VR4130		0x0080
 #define PRID_REV_34K_V1_0_2	0x0022
 #define PRID_REV_LOONGSON1B	0x0020
+#define PRID_REV_LOONGSON1C	0x0020	/* Same as Loongson-1B */
 #define PRID_REV_LOONGSON2E	0x0002
 #define PRID_REV_LOONGSON2F	0x0003
 #define PRID_REV_LOONGSON3A_R1	0x0005
diff --git a/arch/mips/include/asm/device.h b/arch/mips/include/asm/device.h
index c94fafba9e62..21c2082a0dfb 100644
--- a/arch/mips/include/asm/device.h
+++ b/arch/mips/include/asm/device.h
@@ -11,6 +11,11 @@ struct dma_map_ops;
 struct dev_archdata {
 	/* DMA operations on that device */
 	struct dma_map_ops *dma_ops;
+
+#ifdef CONFIG_DMA_PERDEV_COHERENT
+	/* Non-zero if DMA is coherent with CPU caches */
+	bool dma_coherent;
+#endif
 };
 
 struct pdev_archdata {
diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h
index bc5e85d579e6..72d0eab02afc 100644
--- a/arch/mips/include/asm/dma-coherence.h
+++ b/arch/mips/include/asm/dma-coherence.h
@@ -9,14 +9,22 @@
 #ifndef __ASM_DMA_COHERENCE_H
 #define __ASM_DMA_COHERENCE_H
 
-#ifdef CONFIG_DMA_MAYBE_COHERENT
-extern int coherentio;
+enum coherent_io_user_state {
+	IO_COHERENCE_DEFAULT,
+	IO_COHERENCE_ENABLED,
+	IO_COHERENCE_DISABLED,
+};
+
+#if defined(CONFIG_DMA_PERDEV_COHERENT)
+/* Don't provide (hw_)coherentio to avoid misuse */
+#elif defined(CONFIG_DMA_MAYBE_COHERENT)
+extern enum coherent_io_user_state coherentio;
 extern int hw_coherentio;
 #else
 #ifdef CONFIG_DMA_COHERENT
-#define coherentio	1
+#define coherentio	IO_COHERENCE_ENABLED
 #else
-#define coherentio	0
+#define coherentio	IO_COHERENCE_DISABLED
 #endif
 #define hw_coherentio	0
 #endif /* CONFIG_DMA_MAYBE_COHERENT */
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index 12fa79e2f1b4..7aa71b9b0258 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -32,4 +32,14 @@ static inline void dma_mark_clean(void *addr, size_t size) {}
 extern void dma_cache_sync(struct device *dev, void *vaddr, size_t size,
 	       enum dma_data_direction direction);
 
+#define arch_setup_dma_ops arch_setup_dma_ops
+static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base,
+				      u64 size, const struct iommu_ops *iommu,
+				      bool coherent)
+{
+#ifdef CONFIG_DMA_PERDEV_COHERENT
+	dev->archdata.dma_coherent = coherent;
+#endif
+}
+
 #endif /* _ASM_DMA_MAPPING_H */
diff --git a/arch/mips/include/asm/i8259.h b/arch/mips/include/asm/i8259.h
index a7fbcd6ed13c..32229c77906a 100644
--- a/arch/mips/include/asm/i8259.h
+++ b/arch/mips/include/asm/i8259.h
@@ -37,12 +37,22 @@
 
 extern raw_spinlock_t i8259A_lock;
 
-extern int i8259A_irq_pending(unsigned int irq);
 extern void make_8259A_irq(unsigned int irq);
 
 extern void init_i8259_irqs(void);
 extern int i8259_of_init(struct device_node *node, struct device_node *parent);
 
+/**
+ * i8159_set_poll() - Override the i8259 polling function
+ * @poll: pointer to platform-specific polling function
+ *
+ * Call this to override the generic i8259 polling function, which directly
+ * accesses i8259 registers, with a platform specific one which may be faster
+ * in cases where hardware provides a more optimal means of polling for an
+ * interrupt.
+ */
+extern void i8259_set_poll(int (*poll)(void));
+
 /*
  * Do the traditional i8259 interrupt polling thing.  This is for the few
  * cases where no better interrupt acknowledge method is available and we
diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h
index 0f8a354fd468..61addb1677e9 100644
--- a/arch/mips/include/asm/mach-generic/dma-coherence.h
+++ b/arch/mips/include/asm/mach-generic/dma-coherence.h
@@ -49,7 +49,19 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
 
 static inline int plat_device_is_coherent(struct device *dev)
 {
-	return coherentio;
+#ifdef CONFIG_DMA_PERDEV_COHERENT
+	return dev->archdata.dma_coherent;
+#else
+	switch (coherentio) {
+	default:
+	case IO_COHERENCE_DEFAULT:
+		return hw_coherentio;
+	case IO_COHERENCE_ENABLED:
+		return 1;
+	case IO_COHERENCE_DISABLED:
+		return 0;
+	}
+#endif
 }
 
 #ifndef plat_post_dma_flush
diff --git a/arch/mips/include/asm/mach-generic/floppy.h b/arch/mips/include/asm/mach-generic/floppy.h
index e2561d99a3fe..9ec2f6a5200b 100644
--- a/arch/mips/include/asm/mach-generic/floppy.h
+++ b/arch/mips/include/asm/mach-generic/floppy.h
@@ -115,11 +115,7 @@ static inline unsigned long fd_getfdaddr1(void)
 
 static inline unsigned long fd_dma_mem_alloc(unsigned long size)
 {
-	unsigned long mem;
-
-	mem = __get_dma_pages(GFP_KERNEL, get_order(size));
-
-	return mem;
+	return __get_dma_pages(GFP_KERNEL, get_order(size));
 }
 
 static inline void fd_dma_mem_free(unsigned long addr, unsigned long size)
diff --git a/arch/mips/include/asm/mach-generic/spaces.h b/arch/mips/include/asm/mach-generic/spaces.h
index afc96ecb9004..952b0fdfda0e 100644
--- a/arch/mips/include/asm/mach-generic/spaces.h
+++ b/arch/mips/include/asm/mach-generic/spaces.h
@@ -12,6 +12,8 @@
 
 #include <linux/const.h>
 
+#include <asm/mipsregs.h>
+
 /*
  * This gives the physical RAM offset.
  */
@@ -52,11 +54,7 @@
 #ifdef CONFIG_64BIT
 
 #ifndef CAC_BASE
-#ifdef CONFIG_DMA_NONCOHERENT
-#define CAC_BASE		_AC(0x9800000000000000, UL)
-#else
-#define CAC_BASE		_AC(0xa800000000000000, UL)
-#endif
+#define CAC_BASE	PHYS_TO_XKPHYS(read_c0_config() & CONF_CM_CMASK, 0)
 #endif
 
 #ifndef IO_BASE
diff --git a/arch/mips/include/asm/mach-ip27/spaces.h b/arch/mips/include/asm/mach-ip27/spaces.h
index b18802a0b17e..4775a1136a5b 100644
--- a/arch/mips/include/asm/mach-ip27/spaces.h
+++ b/arch/mips/include/asm/mach-ip27/spaces.h
@@ -19,6 +19,7 @@
 #define IO_BASE			0x9200000000000000
 #define MSPEC_BASE		0x9400000000000000
 #define UNCAC_BASE		0x9600000000000000
+#define CAC_BASE		0xa800000000000000
 
 #define TO_MSPEC(x)		(MSPEC_BASE | ((x) & TO_PHYS_MASK))
 #define TO_HSPEC(x)		(HSPEC_BASE | ((x) & TO_PHYS_MASK))
diff --git a/arch/mips/include/asm/mach-loongson32/irq.h b/arch/mips/include/asm/mach-loongson32/irq.h
index c1c744197de4..8c01b304b7ec 100644
--- a/arch/mips/include/asm/mach-loongson32/irq.h
+++ b/arch/mips/include/asm/mach-loongson32/irq.h
@@ -36,9 +36,14 @@
 #define LS1X_IRQ(n, x)			(LS1X_IRQ_BASE + (n << 5) + (x))
 
 #define LS1X_UART0_IRQ			LS1X_IRQ(0, 2)
+#if defined(CONFIG_LOONGSON1_LS1B)
 #define LS1X_UART1_IRQ			LS1X_IRQ(0, 3)
 #define LS1X_UART2_IRQ			LS1X_IRQ(0, 4)
 #define LS1X_UART3_IRQ			LS1X_IRQ(0, 5)
+#elif defined(CONFIG_LOONGSON1_LS1C)
+#define LS1X_UART1_IRQ			LS1X_IRQ(0, 4)
+#define LS1X_UART2_IRQ			LS1X_IRQ(0, 5)
+#endif
 #define LS1X_CAN0_IRQ			LS1X_IRQ(0, 6)
 #define LS1X_CAN1_IRQ			LS1X_IRQ(0, 7)
 #define LS1X_SPI0_IRQ			LS1X_IRQ(0, 8)
@@ -47,6 +52,9 @@
 #define LS1X_DMA0_IRQ			LS1X_IRQ(0, 13)
 #define LS1X_DMA1_IRQ			LS1X_IRQ(0, 14)
 #define LS1X_DMA2_IRQ			LS1X_IRQ(0, 15)
+#if defined(CONFIG_LOONGSON1_LS1C)
+#define LS1X_NAND_IRQ			LS1X_IRQ(0, 16)
+#endif
 #define LS1X_PWM0_IRQ			LS1X_IRQ(0, 17)
 #define LS1X_PWM1_IRQ			LS1X_IRQ(0, 18)
 #define LS1X_PWM2_IRQ			LS1X_IRQ(0, 19)
@@ -54,18 +62,49 @@
 #define LS1X_RTC_INT0_IRQ		LS1X_IRQ(0, 21)
 #define LS1X_RTC_INT1_IRQ		LS1X_IRQ(0, 22)
 #define LS1X_RTC_INT2_IRQ		LS1X_IRQ(0, 23)
+#if defined(CONFIG_LOONGSON1_LS1B)
 #define LS1X_TOY_INT0_IRQ		LS1X_IRQ(0, 24)
 #define LS1X_TOY_INT1_IRQ		LS1X_IRQ(0, 25)
 #define LS1X_TOY_INT2_IRQ		LS1X_IRQ(0, 26)
 #define LS1X_RTC_TICK_IRQ		LS1X_IRQ(0, 27)
 #define LS1X_TOY_TICK_IRQ		LS1X_IRQ(0, 28)
+#define LS1X_UART4_IRQ			LS1X_IRQ(0, 29)
+#define LS1X_UART5_IRQ			LS1X_IRQ(0, 30)
+#elif defined(CONFIG_LOONGSON1_LS1C)
+#define LS1X_UART3_IRQ			LS1X_IRQ(0, 29)
+#define LS1X_ADC_IRQ			LS1X_IRQ(0, 30)
+#define LS1X_SDIO_IRQ			LS1X_IRQ(0, 31)
+#endif
 
 #define LS1X_EHCI_IRQ			LS1X_IRQ(1, 0)
 #define LS1X_OHCI_IRQ			LS1X_IRQ(1, 1)
+#if defined(CONFIG_LOONGSON1_LS1B)
 #define LS1X_GMAC0_IRQ			LS1X_IRQ(1, 2)
 #define LS1X_GMAC1_IRQ			LS1X_IRQ(1, 3)
+#elif defined(CONFIG_LOONGSON1_LS1C)
+#define LS1X_OTG_IRQ			LS1X_IRQ(1, 2)
+#define LS1X_GMAC0_IRQ			LS1X_IRQ(1, 3)
+#define LS1X_CAM_IRQ			LS1X_IRQ(1, 4)
+#define LS1X_UART4_IRQ			LS1X_IRQ(1, 5)
+#define LS1X_UART5_IRQ			LS1X_IRQ(1, 6)
+#define LS1X_UART6_IRQ			LS1X_IRQ(1, 7)
+#define LS1X_UART7_IRQ			LS1X_IRQ(1, 8)
+#define LS1X_UART8_IRQ			LS1X_IRQ(1, 9)
+#define LS1X_UART9_IRQ			LS1X_IRQ(1, 13)
+#define LS1X_UART10_IRQ			LS1X_IRQ(1, 14)
+#define LS1X_UART11_IRQ			LS1X_IRQ(1, 15)
+#define LS1X_I2C0_IRQ			LS1X_IRQ(1, 17)
+#define LS1X_I2C1_IRQ			LS1X_IRQ(1, 18)
+#define LS1X_I2C2_IRQ			LS1X_IRQ(1, 19)
+#endif
 
-#define LS1X_IRQS		(LS1X_IRQ(4, 31) + 1 - LS1X_IRQ_BASE)
+#if defined(CONFIG_LOONGSON1_LS1B)
+#define INTN	4
+#elif defined(CONFIG_LOONGSON1_LS1C)
+#define INTN	5
+#endif
+
+#define LS1X_IRQS		(LS1X_IRQ(INTN, 31) + 1 - LS1X_IRQ_BASE)
 
 #define NR_IRQS			(MIPS_CPU_IRQS + LS1X_IRQS)
 
diff --git a/arch/mips/include/asm/mach-loongson32/loongson1.h b/arch/mips/include/asm/mach-loongson32/loongson1.h
index 978f6df8970a..3584c40caf79 100644
--- a/arch/mips/include/asm/mach-loongson32/loongson1.h
+++ b/arch/mips/include/asm/mach-loongson32/loongson1.h
@@ -12,7 +12,11 @@
 #ifndef __ASM_MACH_LOONGSON32_LOONGSON1_H
 #define __ASM_MACH_LOONGSON32_LOONGSON1_H
 
+#if defined(CONFIG_LOONGSON1_LS1B)
 #define DEFAULT_MEMSIZE			256	/* If no memsize provided */
+#elif defined(CONFIG_LOONGSON1_LS1C)
+#define DEFAULT_MEMSIZE			32
+#endif
 
 /* Loongson 1 Register Bases */
 #define LS1X_MUX_BASE			0x1fd00420
@@ -20,6 +24,7 @@
 #define LS1X_GPIO0_BASE			0x1fd010c0
 #define LS1X_GPIO1_BASE			0x1fd010c4
 #define LS1X_DMAC_BASE			0x1fd01160
+#define LS1X_CBUS_BASE			0x1fd011c0
 #define LS1X_EHCI_BASE			0x1fe00000
 #define LS1X_OHCI_BASE			0x1fe08000
 #define LS1X_GMAC0_BASE			0x1fe10000
diff --git a/arch/mips/include/asm/mach-loongson32/platform.h b/arch/mips/include/asm/mach-loongson32/platform.h
index 672531aa9bef..7adc31364939 100644
--- a/arch/mips/include/asm/mach-loongson32/platform.h
+++ b/arch/mips/include/asm/mach-loongson32/platform.h
@@ -30,5 +30,6 @@ void __init ls1x_clk_init(void);
 void __init ls1x_dma_set_platdata(struct plat_ls1x_dma *pdata);
 void __init ls1x_nand_set_platdata(struct plat_ls1x_nand *pdata);
 void __init ls1x_serial_set_uartclk(struct platform_device *pdev);
+void __init ls1x_rtc_set_extclk(struct platform_device *pdev);
 
 #endif /* __ASM_MACH_LOONGSON32_PLATFORM_H */
diff --git a/arch/mips/include/asm/mach-loongson32/regs-clk.h b/arch/mips/include/asm/mach-loongson32/regs-clk.h
index 4d56fc38f0c4..e5e8f118f34b 100644
--- a/arch/mips/include/asm/mach-loongson32/regs-clk.h
+++ b/arch/mips/include/asm/mach-loongson32/regs-clk.h
@@ -18,6 +18,7 @@
 #define LS1X_CLK_PLL_FREQ		LS1X_CLK_REG(0x0)
 #define LS1X_CLK_PLL_DIV		LS1X_CLK_REG(0x4)
 
+#if defined(CONFIG_LOONGSON1_LS1B)
 /* Clock PLL Divisor Register Bits */
 #define DIV_DC_EN			BIT(31)
 #define DIV_DC_RST			BIT(30)
@@ -48,4 +49,37 @@
 #define BYPASS_DDR_WIDTH		1
 #define BYPASS_CPU_WIDTH		1
 
+#elif defined(CONFIG_LOONGSON1_LS1C)
+/* PLL/SDRAM Frequency configuration register Bits */
+#define PLL_VALID			BIT(31)
+#define FRAC_N				GENMASK(23, 16)
+#define RST_TIME			GENMASK(3, 2)
+#define SDRAM_DIV			GENMASK(1, 0)
+
+/* CPU/CAMERA/DC Frequency configuration register Bits */
+#define DIV_DC_EN			BIT(31)
+#define DIV_DC				GENMASK(30, 24)
+#define DIV_CAM_EN			BIT(23)
+#define DIV_CAM				GENMASK(22, 16)
+#define DIV_CPU_EN			BIT(15)
+#define DIV_CPU				GENMASK(14, 8)
+#define DIV_DC_SEL_EN			BIT(5)
+#define DIV_DC_SEL			BIT(4)
+#define DIV_CAM_SEL_EN			BIT(3)
+#define DIV_CAM_SEL			BIT(2)
+#define DIV_CPU_SEL_EN			BIT(1)
+#define DIV_CPU_SEL			BIT(0)
+
+#define DIV_DC_SHIFT			24
+#define DIV_CAM_SHIFT			16
+#define DIV_CPU_SHIFT			8
+#define DIV_DDR_SHIFT			0
+
+#define DIV_DC_WIDTH			7
+#define DIV_CAM_WIDTH			7
+#define DIV_CPU_WIDTH			7
+#define DIV_DDR_WIDTH			2
+
+#endif
+
 #endif /* __ASM_MACH_LOONGSON32_REGS_CLK_H */
diff --git a/arch/mips/include/asm/mach-loongson32/regs-mux.h b/arch/mips/include/asm/mach-loongson32/regs-mux.h
index 7c394f93cb9e..4a0bdeb0eb9b 100644
--- a/arch/mips/include/asm/mach-loongson32/regs-mux.h
+++ b/arch/mips/include/asm/mach-loongson32/regs-mux.h
@@ -18,6 +18,7 @@
 #define LS1X_MUX_CTRL0			LS1X_MUX_REG(0x0)
 #define LS1X_MUX_CTRL1			LS1X_MUX_REG(0x4)
 
+#if defined(CONFIG_LOONGSON1_LS1B)
 /* MUX CTRL0 Register Bits */
 #define UART0_USE_PWM23			BIT(28)
 #define UART0_USE_PWM01			BIT(27)
@@ -64,4 +65,64 @@
 #define GMAC1_USE_PWM23			BIT(1)
 #define GMAC0_USE_PWM01			BIT(0)
 
+#elif defined(CONFIG_LOONGSON1_LS1C)
+
+/* SHUT_CTRL Register Bits */
+#define UART_SPLIT			GENMASK(31, 30)
+#define OUTPUT_CLK			GENMASK(29, 26)
+#define ADC_SHUT			BIT(25)
+#define SDIO_SHUT			BIT(24)
+#define DMA2_SHUT			BIT(23)
+#define DMA1_SHUT			BIT(22)
+#define DMA0_SHUT			BIT(21)
+#define SPI1_SHUT			BIT(20)
+#define SPI0_SHUT			BIT(19)
+#define I2C2_SHUT			BIT(18)
+#define I2C1_SHUT			BIT(17)
+#define I2C0_SHUT			BIT(16)
+#define AC97_SHUT			BIT(15)
+#define I2S_SHUT			BIT(14)
+#define UART3_SHUT			BIT(13)
+#define UART2_SHUT			BIT(12)
+#define UART1_SHUT			BIT(11)
+#define UART0_SHUT			BIT(10)
+#define CAN1_SHUT			BIT(9)
+#define CAN0_SHUT			BIT(8)
+#define ECC_SHUT			BIT(7)
+#define GMAC_SHUT			BIT(6)
+#define USBHOST_SHUT			BIT(5)
+#define USBOTG_SHUT			BIT(4)
+#define SDRAM_SHUT			BIT(3)
+#define SRAM_SHUT			BIT(2)
+#define CAM_SHUT			BIT(1)
+#define LCD_SHUT			BIT(0)
+
+#define UART_SPLIT_SHIFT                        30
+#define OUTPUT_CLK_SHIFT                        26
+
+/* MISC_CTRL Register Bits */
+#define USBHOST_RSTN			BIT(31)
+#define PHY_INTF_SELI			GENMASK(30, 28)
+#define AC97_EN				BIT(25)
+#define SDIO_DMA_EN			GENMASK(24, 23)
+#define ADC_DMA_EN			BIT(22)
+#define SDIO_USE_SPI1			BIT(17)
+#define SDIO_USE_SPI0			BIT(16)
+#define SRAM_CTRL			GENMASK(15, 0)
+
+#define PHY_INTF_SELI_SHIFT                     28
+#define SDIO_DMA_EN_SHIFT                       23
+#define SRAM_CTRL_SHIFT				0
+
+#define LS1X_CBUS_REG(n, x) \
+		((void __iomem *)KSEG1ADDR(LS1X_CBUS_BASE + (n * 0x04) + (x)))
+
+#define LS1X_CBUS_FIRST(n)		LS1X_CBUS_REG(n, 0x00)
+#define LS1X_CBUS_SECOND(n)		LS1X_CBUS_REG(n, 0x10)
+#define LS1X_CBUS_THIRD(n)		LS1X_CBUS_REG(n, 0x20)
+#define LS1X_CBUS_FOURTHT(n)		LS1X_CBUS_REG(n, 0x30)
+#define LS1X_CBUS_FIFTHT(n)		LS1X_CBUS_REG(n, 0x40)
+
+#endif
+
 #endif /* __ASM_MACH_LOONGSON32_REGS_MUX_H */
diff --git a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
deleted file mode 100644
index bfbd7035d4c5..000000000000
--- a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * 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) 2003, 2004 Chris Dearman
- * Copyright (C) 2005 Ralf Baechle (ralf@linux-mips.org)
- */
-#ifndef __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H
-#define __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H
-
-
-/*
- * CPU feature overrides for MIPS boards
- */
-#ifdef CONFIG_CPU_MIPS32
-#define cpu_has_tlb		1
-#define cpu_has_4kex		1
-#define cpu_has_4k_cache	1
-/* #define cpu_has_fpu		? */
-/* #define cpu_has_32fpr	? */
-#define cpu_has_counter		1
-/* #define cpu_has_watch	? */
-#define cpu_has_divec		1
-#define cpu_has_vce		0
-/* #define cpu_has_cache_cdex_p ? */
-/* #define cpu_has_cache_cdex_s ? */
-/* #define cpu_has_prefetch	? */
-#define cpu_has_mcheck		1
-/* #define cpu_has_ejtag	? */
-#ifdef CONFIG_CPU_MICROMIPS
-#define cpu_has_llsc		0
-#else
-#define cpu_has_llsc		1
-#endif
-/* #define cpu_has_vtag_icache	? */
-/* #define cpu_has_dc_aliases	? */
-/* #define cpu_has_ic_fills_f_dc ? */
-#define cpu_has_nofpuex		0
-/* #define cpu_has_64bits	? */
-/* #define cpu_has_64bit_zero_reg ? */
-/* #define cpu_has_inclusive_pcaches ? */
-#define cpu_icache_snoops_remote_store 1
-#endif
-
-#ifdef CONFIG_CPU_MIPS64
-#define cpu_has_tlb		1
-#define cpu_has_4kex		1
-#define cpu_has_4k_cache	1
-/* #define cpu_has_fpu		? */
-/* #define cpu_has_32fpr	? */
-#define cpu_has_counter		1
-/* #define cpu_has_watch	? */
-#define cpu_has_divec		1
-#define cpu_has_vce		0
-/* #define cpu_has_cache_cdex_p ? */
-/* #define cpu_has_cache_cdex_s ? */
-/* #define cpu_has_prefetch	? */
-#define cpu_has_mcheck		1
-/* #define cpu_has_ejtag	? */
-#define cpu_has_llsc		1
-/* #define cpu_has_vtag_icache	? */
-/* #define cpu_has_dc_aliases	? */
-/* #define cpu_has_ic_fills_f_dc ? */
-#define cpu_has_nofpuex		0
-/* #define cpu_has_64bits	? */
-/* #define cpu_has_64bit_zero_reg ? */
-/* #define cpu_has_inclusive_pcaches ? */
-#define cpu_icache_snoops_remote_store 1
-#endif
-
-#endif /* __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H */
diff --git a/arch/mips/include/asm/mach-sead3/irq.h b/arch/mips/include/asm/mach-sead3/irq.h
deleted file mode 100644
index 5d154cfbcf4c..000000000000
--- a/arch/mips/include/asm/mach-sead3/irq.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef __ASM_MACH_MIPS_IRQ_H
-#define __ASM_MACH_MIPS_IRQ_H
-
-#define NR_IRQS 256
-
-
-#include_next <irq.h>
-
-#endif /* __ASM_MACH_MIPS_IRQ_H */
diff --git a/arch/mips/include/asm/mach-sead3/kernel-entry-init.h b/arch/mips/include/asm/mach-sead3/kernel-entry-init.h
deleted file mode 100644
index 6cccd4d558d7..000000000000
--- a/arch/mips/include/asm/mach-sead3/kernel-entry-init.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/*
- * 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.
- *
- * Chris Dearman (chris@mips.com)
- * Copyright (C) 2007 Mips Technologies, Inc.
- */
-#ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
-#define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H
-
-	.macro	kernel_entry_setup
-	.endm
-
-/*
- * Do SMP slave processor setup necessary before we can safely execute C code.
- */
-	.macro	smp_slave_setup
-	.endm
-
-#endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */
diff --git a/arch/mips/include/asm/mach-sead3/war.h b/arch/mips/include/asm/mach-sead3/war.h
deleted file mode 100644
index d068fc411f47..000000000000
--- a/arch/mips/include/asm/mach-sead3/war.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/*
- * 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) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org>
- */
-#ifndef __ASM_MIPS_MACH_MIPS_WAR_H
-#define __ASM_MIPS_MACH_MIPS_WAR_H
-
-#define R4600_V1_INDEX_ICACHEOP_WAR	0
-#define R4600_V1_HIT_CACHEOP_WAR	0
-#define R4600_V2_HIT_CACHEOP_WAR	0
-#define R5432_CP0_INTERRUPT_WAR		0
-#define BCM1250_M3_WAR			0
-#define SIBYTE_1956_WAR			0
-#define MIPS4K_ICACHE_REFILL_WAR	1
-#define MIPS_CACHE_SYNC_WAR		1
-#define TX49XX_ICACHE_INDEX_INV_WAR	0
-#define ICACHE_REFILLS_WORKAROUND_WAR	1
-#define R10000_LLSC_WAR			0
-#define MIPS34K_MISSED_ITLB_WAR		0
-
-#endif /* __ASM_MIPS_MACH_MIPS_WAR_H */
diff --git a/arch/mips/include/asm/machine.h b/arch/mips/include/asm/machine.h
new file mode 100644
index 000000000000..6b444cd9526f
--- /dev/null
+++ b/arch/mips/include/asm/machine.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#ifndef __MIPS_ASM_MACHINE_H__
+#define __MIPS_ASM_MACHINE_H__
+
+#include <linux/libfdt.h>
+#include <linux/of.h>
+
+struct mips_machine {
+	const struct of_device_id *matches;
+	const void *fdt;
+	bool (*detect)(void);
+	const void *(*fixup_fdt)(const void *fdt, const void *match_data);
+	unsigned int (*measure_hpt_freq)(void);
+};
+
+extern long __mips_machines_start;
+extern long __mips_machines_end;
+
+#define MIPS_MACHINE(name)						\
+	static const struct mips_machine __mips_mach_##name		\
+		__used __section(.mips.machines.init)
+
+#define for_each_mips_machine(mach)					\
+	for ((mach) = (struct mips_machine *)&__mips_machines_start;	\
+	     (mach) < (struct mips_machine *)&__mips_machines_end;	\
+	     (mach)++)
+
+/**
+ * mips_machine_is_compatible() - check if a machine is compatible with an FDT
+ * @mach: the machine struct to check
+ * @fdt: the FDT to check for compatibility with
+ *
+ * Check whether the given machine @mach is compatible with the given flattened
+ * device tree @fdt, based upon the compatibility property of the root node.
+ *
+ * Return: the device id matched if any, else NULL
+ */
+static inline const struct of_device_id *
+mips_machine_is_compatible(const struct mips_machine *mach, const void *fdt)
+{
+	const struct of_device_id *match;
+
+	if (!mach->matches)
+		return NULL;
+
+	for (match = mach->matches; match->compatible; match++) {
+		if (fdt_node_check_compatible(fdt, 0, match->compatible) == 0)
+			return match;
+	}
+
+	return NULL;
+}
+
+#endif /* __MIPS_ASM_MACHINE_H__ */
diff --git a/arch/mips/include/asm/mips-boards/sead3int.h b/arch/mips/include/asm/mips-boards/sead3int.h
deleted file mode 100644
index 8932c7de0419..000000000000
--- a/arch/mips/include/asm/mips-boards/sead3int.h
+++ /dev/null
@@ -1,32 +0,0 @@
-/*
- * 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) 2000,2012 MIPS Technologies, Inc.  All rights reserved.
- *	Douglas Leung <douglas@mips.com>
- *	Steven J. Hill <sjhill@mips.com>
- */
-#ifndef _MIPS_SEAD3INT_H
-#define _MIPS_SEAD3INT_H
-
-#include <linux/irqchip/mips-gic.h>
-
-/* SEAD-3 GIC address space definitions. */
-#define GIC_BASE_ADDR		0x1b1c0000
-#define GIC_ADDRSPACE_SZ	(128 * 1024)
-
-/* CPU interrupt offsets */
-#define CPU_INT_GIC		2
-#define CPU_INT_EHCI		2
-#define CPU_INT_UART0		4
-#define CPU_INT_UART1		4
-#define CPU_INT_NET		6
-
-/* GIC interrupt offsets */
-#define GIC_INT_NET		GIC_SHARED_TO_HWIRQ(0)
-#define GIC_INT_UART1		GIC_SHARED_TO_HWIRQ(2)
-#define GIC_INT_UART0		GIC_SHARED_TO_HWIRQ(3)
-#define GIC_INT_EHCI		GIC_SHARED_TO_HWIRQ(5)
-
-#endif /* !(_MIPS_SEAD3INT_H) */
diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h
index 4fafeefe65c2..2e4180797b21 100644
--- a/arch/mips/include/asm/mips-cm.h
+++ b/arch/mips/include/asm/mips-cm.h
@@ -359,6 +359,7 @@ BUILD_CM_Cx_R_(tcid_8_priority,	0x80)
 /* GCR_Cx_COHERENCE register fields */
 #define CM_GCR_Cx_COHERENCE_COHDOMAINEN_SHF	0
 #define CM_GCR_Cx_COHERENCE_COHDOMAINEN_MSK	(_ULCAST_(0xff) << 0)
+#define CM3_GCR_Cx_COHERENCE_COHEN_MSK		(_ULCAST_(0x1) << 0)
 
 /* GCR_Cx_CONFIG register fields */
 #define CM_GCR_Cx_CONFIG_IOCUTYPE_SHF		10
diff --git a/arch/mips/include/asm/octeon/cvmx-helper-board.h b/arch/mips/include/asm/octeon/cvmx-helper-board.h
index cda93aee712c..b4d19c21b62c 100644
--- a/arch/mips/include/asm/octeon/cvmx-helper-board.h
+++ b/arch/mips/include/asm/octeon/cvmx-helper-board.h
@@ -58,16 +58,6 @@ typedef enum {
 #define CVMX_HELPER_BOARD_MGMT_IPD_PORT	    -10
 
 /**
- * cvmx_override_board_link_get(int ipd_port) is a function
- * pointer. It is meant to allow customization of the process of
- * talking to a PHY to determine link speed. It is called every
- * time a PHY must be polled for link status. Users should set
- * this pointer to a function before calling any cvmx-helper
- * operations.
- */
-extern cvmx_helper_link_info_t(*cvmx_override_board_link_get) (int ipd_port);
-
-/**
  * Return the MII PHY address associated with the given IPD
  * port. A result of -1 means there isn't a MII capable PHY
  * connected to this port. On chips supporting multiple MII
@@ -86,26 +76,6 @@ extern cvmx_helper_link_info_t(*cvmx_override_board_link_get) (int ipd_port);
 extern int cvmx_helper_board_get_mii_address(int ipd_port);
 
 /**
- * This function as a board specific method of changing the PHY
- * speed, duplex, and autonegotiation. This programs the PHY and
- * not Octeon. This can be used to force Octeon's links to
- * specific settings.
- *
- * @phy_addr:  The address of the PHY to program
- * @link_flags:
- *		    Flags to control autonegotiation.  Bit 0 is autonegotiation
- *		    enable/disable to maintain backward compatibility.
- * @link_info: Link speed to program. If the speed is zero and autonegotiation
- *		    is enabled, all possible negotiation speeds are advertised.
- *
- * Returns Zero on success, negative on failure
- */
-int cvmx_helper_board_link_set_phy(int phy_addr,
-				   cvmx_helper_board_set_phy_link_flags_types_t
-				   link_flags,
-				   cvmx_helper_link_info_t link_info);
-
-/**
  * This function is the board specific method of determining an
  * ethernet ports link speed. Most Octeon boards have Marvell PHYs
  * and are handled by the fall through case. This function must be
diff --git a/arch/mips/include/asm/octeon/cvmx-mdio.h b/arch/mips/include/asm/octeon/cvmx-mdio.h
deleted file mode 100644
index 9f6a4f32a83c..000000000000
--- a/arch/mips/include/asm/octeon/cvmx-mdio.h
+++ /dev/null
@@ -1,506 +0,0 @@
-/***********************license start***************
- * Author: Cavium Networks
- *
- * Contact: support@caviumnetworks.com
- * This file is part of the OCTEON SDK
- *
- * Copyright (c) 2003-2008 Cavium Networks
- *
- * This file 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.
- *
- * This file is distributed in the hope that it will be useful, but
- * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
- * NONINFRINGEMENT.  See the GNU General Public License for more
- * details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this file; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- * or visit http://www.gnu.org/licenses/.
- *
- * This file may also be available under a different license from Cavium.
- * Contact Cavium Networks for more information
- ***********************license end**************************************/
-
-/*
- *
- * Interface to the SMI/MDIO hardware, including support for both IEEE 802.3
- * clause 22 and clause 45 operations.
- *
- */
-
-#ifndef __CVMX_MIO_H__
-#define __CVMX_MIO_H__
-
-#include <asm/octeon/cvmx-smix-defs.h>
-
-/**
- * PHY register 0 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_CONTROL 0
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t reset:1;
-		uint16_t loopback:1;
-		uint16_t speed_lsb:1;
-		uint16_t autoneg_enable:1;
-		uint16_t power_down:1;
-		uint16_t isolate:1;
-		uint16_t restart_autoneg:1;
-		uint16_t duplex:1;
-		uint16_t collision_test:1;
-		uint16_t speed_msb:1;
-		uint16_t unidirectional_enable:1;
-		uint16_t reserved_0_4:5;
-	} s;
-} cvmx_mdio_phy_reg_control_t;
-
-/**
- * PHY register 1 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_STATUS 1
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t capable_100base_t4:1;
-		uint16_t capable_100base_x_full:1;
-		uint16_t capable_100base_x_half:1;
-		uint16_t capable_10_full:1;
-		uint16_t capable_10_half:1;
-		uint16_t capable_100base_t2_full:1;
-		uint16_t capable_100base_t2_half:1;
-		uint16_t capable_extended_status:1;
-		uint16_t capable_unidirectional:1;
-		uint16_t capable_mf_preamble_suppression:1;
-		uint16_t autoneg_complete:1;
-		uint16_t remote_fault:1;
-		uint16_t capable_autoneg:1;
-		uint16_t link_status:1;
-		uint16_t jabber_detect:1;
-		uint16_t capable_extended_registers:1;
-
-	} s;
-} cvmx_mdio_phy_reg_status_t;
-
-/**
- * PHY register 2 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_ID1 2
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t oui_bits_3_18;
-	} s;
-} cvmx_mdio_phy_reg_id1_t;
-
-/**
- * PHY register 3 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_ID2 3
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t oui_bits_19_24:6;
-		uint16_t model:6;
-		uint16_t revision:4;
-	} s;
-} cvmx_mdio_phy_reg_id2_t;
-
-/**
- * PHY register 4 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_AUTONEG_ADVER 4
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t next_page:1;
-		uint16_t reserved_14:1;
-		uint16_t remote_fault:1;
-		uint16_t reserved_12:1;
-		uint16_t asymmetric_pause:1;
-		uint16_t pause:1;
-		uint16_t advert_100base_t4:1;
-		uint16_t advert_100base_tx_full:1;
-		uint16_t advert_100base_tx_half:1;
-		uint16_t advert_10base_tx_full:1;
-		uint16_t advert_10base_tx_half:1;
-		uint16_t selector:5;
-	} s;
-} cvmx_mdio_phy_reg_autoneg_adver_t;
-
-/**
- * PHY register 5 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_LINK_PARTNER_ABILITY 5
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t next_page:1;
-		uint16_t ack:1;
-		uint16_t remote_fault:1;
-		uint16_t reserved_12:1;
-		uint16_t asymmetric_pause:1;
-		uint16_t pause:1;
-		uint16_t advert_100base_t4:1;
-		uint16_t advert_100base_tx_full:1;
-		uint16_t advert_100base_tx_half:1;
-		uint16_t advert_10base_tx_full:1;
-		uint16_t advert_10base_tx_half:1;
-		uint16_t selector:5;
-	} s;
-} cvmx_mdio_phy_reg_link_partner_ability_t;
-
-/**
- * PHY register 6 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_AUTONEG_EXPANSION 6
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t reserved_5_15:11;
-		uint16_t parallel_detection_fault:1;
-		uint16_t link_partner_next_page_capable:1;
-		uint16_t local_next_page_capable:1;
-		uint16_t page_received:1;
-		uint16_t link_partner_autoneg_capable:1;
-
-	} s;
-} cvmx_mdio_phy_reg_autoneg_expansion_t;
-
-/**
- * PHY register 9 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_CONTROL_1000 9
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t test_mode:3;
-		uint16_t manual_master_slave:1;
-		uint16_t master:1;
-		uint16_t port_type:1;
-		uint16_t advert_1000base_t_full:1;
-		uint16_t advert_1000base_t_half:1;
-		uint16_t reserved_0_7:8;
-	} s;
-} cvmx_mdio_phy_reg_control_1000_t;
-
-/**
- * PHY register 10 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_STATUS_1000 10
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t master_slave_fault:1;
-		uint16_t is_master:1;
-		uint16_t local_receiver_ok:1;
-		uint16_t remote_receiver_ok:1;
-		uint16_t remote_capable_1000base_t_full:1;
-		uint16_t remote_capable_1000base_t_half:1;
-		uint16_t reserved_8_9:2;
-		uint16_t idle_error_count:8;
-	} s;
-} cvmx_mdio_phy_reg_status_1000_t;
-
-/**
- * PHY register 15 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_EXTENDED_STATUS 15
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t capable_1000base_x_full:1;
-		uint16_t capable_1000base_x_half:1;
-		uint16_t capable_1000base_t_full:1;
-		uint16_t capable_1000base_t_half:1;
-		uint16_t reserved_0_11:12;
-	} s;
-} cvmx_mdio_phy_reg_extended_status_t;
-
-/**
- * PHY register 13 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_MMD_CONTROL 13
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t function:2;
-		uint16_t reserved_5_13:9;
-		uint16_t devad:5;
-	} s;
-} cvmx_mdio_phy_reg_mmd_control_t;
-
-/**
- * PHY register 14 from the 802.3 spec
- */
-#define CVMX_MDIO_PHY_REG_MMD_ADDRESS_DATA 14
-typedef union {
-	uint16_t u16;
-	struct {
-		uint16_t address_data:16;
-	} s;
-} cvmx_mdio_phy_reg_mmd_address_data_t;
-
-/* Operating request encodings. */
-#define MDIO_CLAUSE_22_WRITE	0
-#define MDIO_CLAUSE_22_READ	1
-
-#define MDIO_CLAUSE_45_ADDRESS	0
-#define MDIO_CLAUSE_45_WRITE	1
-#define MDIO_CLAUSE_45_READ_INC 2
-#define MDIO_CLAUSE_45_READ	3
-
-/* MMD identifiers, mostly for accessing devices within XENPAK modules. */
-#define CVMX_MMD_DEVICE_PMA_PMD	     1
-#define CVMX_MMD_DEVICE_WIS	     2
-#define CVMX_MMD_DEVICE_PCS	     3
-#define CVMX_MMD_DEVICE_PHY_XS	     4
-#define CVMX_MMD_DEVICE_DTS_XS	     5
-#define CVMX_MMD_DEVICE_TC	     6
-#define CVMX_MMD_DEVICE_CL22_EXT     29
-#define CVMX_MMD_DEVICE_VENDOR_1     30
-#define CVMX_MMD_DEVICE_VENDOR_2     31
-
-/* Helper function to put MDIO interface into clause 45 mode */
-static inline void __cvmx_mdio_set_clause45_mode(int bus_id)
-{
-	union cvmx_smix_clk smi_clk;
-	/* Put bus into clause 45 mode */
-	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
-	smi_clk.s.mode = 1;
-	smi_clk.s.preamble = 1;
-	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
-}
-
-/* Helper function to put MDIO interface into clause 22 mode */
-static inline void __cvmx_mdio_set_clause22_mode(int bus_id)
-{
-	union cvmx_smix_clk smi_clk;
-	/* Put bus into clause 22 mode */
-	smi_clk.u64 = cvmx_read_csr(CVMX_SMIX_CLK(bus_id));
-	smi_clk.s.mode = 0;
-	cvmx_write_csr(CVMX_SMIX_CLK(bus_id), smi_clk.u64);
-}
-
-/**
- * Perform an MII read. This function is used to read PHY
- * registers controlling auto negotiation.
- *
- * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
- *		   support multiple busses.
- * @phy_id:   The MII phy id
- * @location: Register location to read
- *
- * Returns Result from the read or -1 on failure
- */
-static inline int cvmx_mdio_read(int bus_id, int phy_id, int location)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_rd_dat smi_rd;
-	int timeout = 1000;
-
-	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
-		__cvmx_mdio_set_clause22_mode(bus_id);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_22_READ;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = location;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
-	} while (smi_rd.s.pending && timeout--);
-
-	if (smi_rd.s.val)
-		return smi_rd.s.dat;
-	else
-		return -1;
-}
-
-/**
- * Perform an MII write. This function is used to write PHY
- * registers controlling auto negotiation.
- *
- * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
- *		   support multiple busses.
- * @phy_id:   The MII phy id
- * @location: Register location to write
- * @val:      Value to write
- *
- * Returns -1 on error
- *	   0 on success
- */
-static inline int cvmx_mdio_write(int bus_id, int phy_id, int location, int val)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_wr_dat smi_wr;
-	int timeout = 1000;
-
-	if (octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
-		__cvmx_mdio_set_clause22_mode(bus_id);
-
-	smi_wr.u64 = 0;
-	smi_wr.s.dat = val;
-	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_22_WRITE;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = location;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
-	} while (smi_wr.s.pending && --timeout);
-	if (timeout <= 0)
-		return -1;
-
-	return 0;
-}
-
-/**
- * Perform an IEEE 802.3 clause 45 MII read. This function is used to
- * read PHY registers controlling auto negotiation.
- *
- * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
- *		   support multiple busses.
- * @phy_id:   The MII phy id
- * @device:   MDIO Managable Device (MMD) id
- * @location: Register location to read
- *
- * Returns Result from the read or -1 on failure
- */
-
-static inline int cvmx_mdio_45_read(int bus_id, int phy_id, int device,
-				    int location)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_rd_dat smi_rd;
-	union cvmx_smix_wr_dat smi_wr;
-	int timeout = 1000;
-
-	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
-		return -1;
-
-	__cvmx_mdio_set_clause45_mode(bus_id);
-
-	smi_wr.u64 = 0;
-	smi_wr.s.dat = location;
-	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = device;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
-	} while (smi_wr.s.pending && --timeout);
-	if (timeout <= 0) {
-		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
-			     "device %2d register %2d	TIME OUT(address)\n",
-		     bus_id, phy_id, device, location);
-		return -1;
-	}
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_45_READ;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = device;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_rd.u64 = cvmx_read_csr(CVMX_SMIX_RD_DAT(bus_id));
-	} while (smi_rd.s.pending && --timeout);
-
-	if (timeout <= 0) {
-		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
-			     "device %2d register %2d	TIME OUT(data)\n",
-		     bus_id, phy_id, device, location);
-		return -1;
-	}
-
-	if (smi_rd.s.val)
-		return smi_rd.s.dat;
-	else {
-		cvmx_dprintf("cvmx_mdio_45_read: bus_id %d phy_id %2d "
-			     "device %2d register %2d	INVALID READ\n",
-		     bus_id, phy_id, device, location);
-		return -1;
-	}
-}
-
-/**
- * Perform an IEEE 802.3 clause 45 MII write. This function is used to
- * write PHY registers controlling auto negotiation.
- *
- * @bus_id:   MDIO bus number. Zero on most chips, but some chips (ex CN56XX)
- *		   support multiple busses.
- * @phy_id:   The MII phy id
- * @device:   MDIO Managable Device (MMD) id
- * @location: Register location to write
- * @val:      Value to write
- *
- * Returns -1 on error
- *	   0 on success
- */
-static inline int cvmx_mdio_45_write(int bus_id, int phy_id, int device,
-				     int location, int val)
-{
-	union cvmx_smix_cmd smi_cmd;
-	union cvmx_smix_wr_dat smi_wr;
-	int timeout = 1000;
-
-	if (!octeon_has_feature(OCTEON_FEATURE_MDIO_CLAUSE_45))
-		return -1;
-
-	__cvmx_mdio_set_clause45_mode(bus_id);
-
-	smi_wr.u64 = 0;
-	smi_wr.s.dat = location;
-	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_45_ADDRESS;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = device;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
-	} while (smi_wr.s.pending && --timeout);
-	if (timeout <= 0)
-		return -1;
-
-	smi_wr.u64 = 0;
-	smi_wr.s.dat = val;
-	cvmx_write_csr(CVMX_SMIX_WR_DAT(bus_id), smi_wr.u64);
-
-	smi_cmd.u64 = 0;
-	smi_cmd.s.phy_op = MDIO_CLAUSE_45_WRITE;
-	smi_cmd.s.phy_adr = phy_id;
-	smi_cmd.s.reg_adr = device;
-	cvmx_write_csr(CVMX_SMIX_CMD(bus_id), smi_cmd.u64);
-
-	do {
-		cvmx_wait(1000);
-		smi_wr.u64 = cvmx_read_csr(CVMX_SMIX_WR_DAT(bus_id));
-	} while (smi_wr.s.pending && --timeout);
-	if (timeout <= 0)
-		return -1;
-
-	return 0;
-}
-
-#endif
diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 9b63cd41213d..30d1129d8624 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -17,15 +17,18 @@
  */
 
 #include <linux/ioport.h>
+#include <linux/list.h>
 #include <linux/of.h>
 
+#ifdef CONFIG_PCI_DRIVERS_LEGACY
+
 /*
  * Each pci channel is a top-level PCI bus seem by CPU.	 A machine  with
  * multiple PCI channels may have multiple PCI host controllers or a
  * single controller supporting multiple channels.
  */
 struct pci_controller {
-	struct pci_controller *next;
+	struct list_head list;
 	struct pci_bus *bus;
 	struct device_node *of_node;
 
@@ -38,10 +41,12 @@ struct pci_controller {
 	struct resource *busn_resource;
 	unsigned long busn_offset;
 
+#ifndef CONFIG_PCI_DOMAINS_GENERIC
 	unsigned int index;
 	/* For compatibility with current (as of July 2003) pciutils
 	   and XFree86. Eventually will be removed. */
 	unsigned int need_domain_info;
+#endif
 
 	/* Optional access methods for reading/writing the bus number
 	   of the PCI controller */
@@ -59,12 +64,43 @@ extern void register_pci_controller(struct pci_controller *hose);
  */
 extern int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
 
+/* Do platform specific device initialization at pci_enable_device() time */
+extern int pcibios_plat_dev_init(struct pci_dev *dev);
+
+extern char * (*pcibios_plat_setup)(char *str);
+
+#ifdef CONFIG_OF
+/* this function parses memory ranges from a device node */
+extern void pci_load_of_ranges(struct pci_controller *hose,
+			       struct device_node *node);
+#else
+static inline void pci_load_of_ranges(struct pci_controller *hose,
+				      struct device_node *node) {}
+#endif
+
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
+static inline void set_pci_need_domain_info(struct pci_controller *hose,
+					    int need_domain_info)
+{
+	/* nothing to do */
+}
+#elif defined(CONFIG_PCI_DOMAINS)
+static inline void set_pci_need_domain_info(struct pci_controller *hose,
+					    int need_domain_info)
+{
+	hose->need_domain_info = need_domain_info;
+}
+#endif /* CONFIG_PCI_DOMAINS */
+
+#endif
 
 /* Can be used to override the logic in pci_scan_bus for skipping
    already-configured bus numbers - to be used for buggy BIOSes
    or architectures with incomplete PCI setup by the loader */
-
-extern unsigned int pcibios_assign_all_busses(void);
+static inline unsigned int pcibios_assign_all_busses(void)
+{
+	return 1;
+}
 
 extern unsigned long PCIBIOS_MIN_IO;
 extern unsigned long PCIBIOS_MIN_MEM;
@@ -100,7 +136,12 @@ struct pci_dev;
  */
 #define PCI_DMA_BUS_IS_PHYS     (1)
 
-#ifdef CONFIG_PCI_DOMAINS
+#ifdef CONFIG_PCI_DOMAINS_GENERIC
+static inline int pci_proc_domain(struct pci_bus *bus)
+{
+	return pci_domain_nr(bus);
+}
+#elif defined(CONFIG_PCI_DOMAINS)
 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
 
 static inline int pci_proc_domain(struct pci_bus *bus)
@@ -121,15 +162,4 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
 	return channel ? 15 : 14;
 }
 
-extern char * (*pcibios_plat_setup)(char *str);
-
-#ifdef CONFIG_OF
-/* this function parses memory ranges from a device node */
-extern void pci_load_of_ranges(struct pci_controller *hose,
-			       struct device_node *node);
-#else
-static inline void pci_load_of_ranges(struct pci_controller *hose,
-				      struct device_node *node) {}
-#endif
-
 #endif /* _ASM_PCI_H */
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index 93c079a1cfc8..a03e86969f78 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -67,11 +67,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
 static inline pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
 	unsigned long address)
 {
-	pte_t *pte;
-
-	pte = (pte_t *) __get_free_pages(GFP_KERNEL|__GFP_ZERO, PTE_ORDER);
-
-	return pte;
+	return (pte_t *)__get_free_pages(GFP_KERNEL | __GFP_ZERO, PTE_ORDER);
 }
 
 static inline struct page *pte_alloc_one(struct mm_struct *mm,
diff --git a/arch/mips/include/asm/pm-cps.h b/arch/mips/include/asm/pm-cps.h
index 625eda53d571..89d58d80b77b 100644
--- a/arch/mips/include/asm/pm-cps.h
+++ b/arch/mips/include/asm/pm-cps.h
@@ -13,10 +13,12 @@
 
 /*
  * The CM & CPC can only handle coherence & power control on a per-core basis,
- * thus in an MT system the VPEs within each core are coupled and can only
+ * thus in an MT system the VP(E)s within each core are coupled and can only
  * enter or exit states requiring CM or CPC assistance in unison.
  */
-#ifdef CONFIG_MIPS_MT
+#if defined(CONFIG_CPU_MIPSR6)
+# define coupled_coherence cpu_has_vp
+#elif defined(CONFIG_MIPS_MT)
 # define coupled_coherence cpu_has_mipsmt
 #else
 # define coupled_coherence 0
diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index f6fc6aac5496..b6578611dddb 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -152,7 +152,7 @@ static inline int is_syscall_success(struct pt_regs *regs)
 
 static inline long regs_return_value(struct pt_regs *regs)
 {
-	if (is_syscall_success(regs))
+	if (is_syscall_success(regs) || !user_mode(regs))
 		return regs->regs[2];
 	else
 		return -regs->regs[2];
diff --git a/arch/mips/include/asm/smp.h b/arch/mips/include/asm/smp.h
index 8bc6c70a4030..060f23ff1817 100644
--- a/arch/mips/include/asm/smp.h
+++ b/arch/mips/include/asm/smp.h
@@ -85,6 +85,20 @@ static inline void __cpu_die(unsigned int cpu)
 extern void play_dead(void);
 #endif
 
+/*
+ * This function will set up the necessary IPIs for Linux to communicate
+ * with the CPUs in mask.
+ * Return 0 on success.
+ */
+int mips_smp_ipi_allocate(const struct cpumask *mask);
+
+/*
+ * This function will free up IPIs allocated with mips_smp_ipi_allocate to the
+ * CPUs in mask, which must be a subset of the IPIs that have been configured.
+ * Return 0 on success.
+ */
+int mips_smp_ipi_free(const struct cpumask *mask);
+
 static inline void arch_send_call_function_single_ipi(int cpu)
 {
 	extern struct plat_smp_ops *mp_ops;	/* private */
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
index 4daf839cd8a8..89fa5c0b1579 100644
--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -859,7 +859,10 @@ extern size_t __copy_user(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_from, __cu_len, true);			\
 	might_fault();							\
+									\
 	if (eva_kernel_access())					\
 		__cu_len = __invoke_copy_to_kernel(__cu_to, __cu_from,	\
 						   __cu_len);		\
@@ -880,6 +883,9 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_from, __cu_len, true);			\
+									\
 	if (eva_kernel_access())					\
 		__cu_len = __invoke_copy_to_kernel(__cu_to, __cu_from,	\
 						   __cu_len);		\
@@ -898,6 +904,9 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_to, __cu_len, false);			\
+									\
 	if (eva_kernel_access())					\
 		__cu_len = __invoke_copy_from_kernel_inatomic(__cu_to,	\
 							      __cu_from,\
@@ -932,6 +941,9 @@ extern size_t __copy_user_inatomic(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_from, __cu_len, true);			\
+									\
 	if (eva_kernel_access()) {					\
 		__cu_len = __invoke_copy_to_kernel(__cu_to,		\
 						   __cu_from,		\
@@ -1124,6 +1136,9 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_to, __cu_len, false);			\
+									\
 	if (eva_kernel_access()) {					\
 		__cu_len = __invoke_copy_from_kernel(__cu_to,		\
 						     __cu_from,		\
@@ -1162,6 +1177,9 @@ extern size_t __copy_in_user_eva(void *__to, const void *__from, size_t __n);
 	__cu_to = (to);							\
 	__cu_from = (from);						\
 	__cu_len = (n);							\
+									\
+	check_object_size(__cu_to, __cu_len, false);			\
+									\
 	if (eva_kernel_access()) {					\
 		__cu_len = __invoke_copy_from_kernel(__cu_to,		\
 						     __cu_from,		\