Merge tag 'mips_4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips

Pull MIPS updates from James Hogan:
 "These are the main MIPS changes for 4.16.

  Rough overview:

   (1) Basic support for the Ingenic JZ4770 based GCW Zero open-source
       handheld video game console

   (2) Support for the Ranchu board (used by Android emulator)

   (3) Various cleanups and misc improvements

  More detailed summary:

  Fixes:
   - Fix generic platform's USB_*HCI_BIG_ENDIAN selects (4.9)
   - Fix vmlinuz default build when ZBOOT selected
   - Fix clean up of vmlinuz targets
   - Fix command line duplication (in preparation for Ingenic JZ4770)

  Miscellaneous:
   - Allow Processor ID reads to be to be optimised away by the compiler
     (improves performance when running in guest)
   - Push ARCH_MIGHT_HAVE_PC_SERIO/PARPORT down to platform level to
     disable on generic platform with Ranchu board support
   - Add helpers for assembler macro instructions for older assemblers
   - Use assembler macro instructions to support VZ, XPA & MSA
     operations on older assemblers, removing C wrapper duplication
   - Various improvements to VZ & XPA assembly wrappers
   - Add drivers/platform/mips/ to MIPS MAINTAINERS entry

  Minor cleanups:
   - Misc FPU emulation cleanups (removal of unnecessary include, moving
     macros to common header, checkpatch and sparse fixes)
   - Remove duplicate assignment of core in play_dead()
   - Remove duplication in watchpoint handling
   - Remove mips_dma_mapping_error() stub
   - Use NULL instead of 0 in prepare_ftrace_return()
   - Use proper kernel-doc Return keyword for
     __compute_return_epc_for_insn()
   - Remove duplicate semicolon in csum_fold()

  Platform support:

  Broadcom:
   - Enable ZBOOT on BCM47xx

  Generic platform:
   - Add Ranchu board support, used by Android emulator
   - Fix machine compatible string matching for Ranchu
   - Support GIC in EIC mode

  Ingenic platforms:
   - Add DT, defconfig and other support for JZ4770 SoC and GCW Zero
   - Support dynamnic machine types (i.e. JZ4740 / JZ4770 / JZ4780)
   - Add Ingenic JZ4770 CGU clocks
   - General Ingenic clk changes to prepare for JZ4770 SoC support
   - Use common command line handling code
   - Add DT vendor prefix to GCW (Game Consoles Worldwide)

  Loongson:
   - Add MAINTAINERS entry for Loongson2 and Loongson3 platforms
   - Drop 32-bit support for Loongson 2E/2F devices
   - Fix build failures due to multiple use of 'MEM_RESERVED'"

* tag 'mips_4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips: (53 commits)
  MIPS: Malta: Sanitize mouse and keyboard configuration.
  MIPS: Update defconfigs after previous patch.
  MIPS: Push ARCH_MIGHT_HAVE_PC_SERIO down to platform level
  MIPS: Push ARCH_MIGHT_HAVE_PC_PARPORT down to platform level
  MIPS: SMP-CPS: Remove duplicate assignment of core in play_dead
  MIPS: Generic: Support GIC in EIC mode
  MIPS: generic: Fix Makefile alignment
  MIPS: generic: Fix ranchu_of_match[] termination
  MIPS: generic: Fix machine compatible matching
  MIPS: Loongson fix name confict - MEM_RESERVED
  MIPS: bcm47xx: enable ZBOOT support
  MIPS: Fix trailing semicolon
  MIPS: Watch: Avoid duplication of bits in mips_read_watch_registers
  MIPS: Watch: Avoid duplication of bits in mips_install_watch_registers.
  MIPS: MSA: Update helpers to use new asm macros
  MIPS: XPA: Standardise readx/writex accessors
  MIPS: XPA: Allow use of $0 (zero) to MTHC0
  MIPS: XPA: Use XPA instructions in assembly
  MIPS: VZ: Pass GC0 register names in $n format
  MIPS: VZ: Update helpers to use new asm macros
  ...

Documentation/devicetree/bindings/vendor-prefixes.txt

@@ -125,6 +125,7 @@ focaltech	FocalTech Systems Co.,Ltd
 friendlyarm	Guangzhou FriendlyARM Computer Tech Co., Ltd
 fsl	Freescale Semiconductor
 fujitsu	Fujitsu Ltd.
+gcw Game Consoles Worldwide
 ge	General Electric Company
 geekbuying	GeekBuying
 gef	GE Fanuc Intelligent Platforms Embedded Systems, Inc.

MAINTAINERS

@@ -9188,6 +9188,7 @@ S:	Supported
 F:	Documentation/devicetree/bindings/mips/
 F:	Documentation/mips/
 F:	arch/mips/
+F:	drivers/platform/mips/
 
 MIPS BOSTON DEVELOPMENT BOARD
 M:	Paul Burton <paul.burton@mips.com>
@@ -9215,6 +9216,25 @@ F:	arch/mips/include/asm/mach-loongson32/
 F:	drivers/*/*loongson1*
 F:	drivers/*/*/*loongson1*
 
+MIPS/LOONGSON2 ARCHITECTURE
+M:	Jiaxun Yang <jiaxun.yang@flygoat.com>
+L:	linux-mips@linux-mips.org
+S:	Maintained
+F:	arch/mips/loongson64/*{2e/2f}*
+F:	arch/mips/include/asm/mach-loongson64/
+F:	drivers/*/*loongson2*
+F:	drivers/*/*/*loongson2*
+
+MIPS/LOONGSON3 ARCHITECTURE
+M:	Huacai Chen <chenhc@lemote.com>
+L:	linux-mips@linux-mips.org
+S:	Maintained
+F:	arch/mips/loongson64/
+F:	arch/mips/include/asm/mach-loongson64/
+F:	drivers/platform/mips/cpu_hwmon.c
+F:	drivers/*/*loongson3*
+F:	drivers/*/*/*loongson3*
+
 MIPS RINT INSTRUCTION EMULATION
 M:	Aleksandar Markovic <aleksandar.markovic@mips.com>
 L:	linux-mips@linux-mips.org
@@ -11586,6 +11606,13 @@ S:	Maintained
 F:	Documentation/blockdev/ramdisk.txt
 F:	drivers/block/brd.c
 
+RANCHU VIRTUAL BOARD FOR MIPS
+M:	Miodrag Dinic <miodrag.dinic@mips.com>
+L:	linux-mips@linux-mips.org
+S:	Supported
+F:	arch/mips/generic/board-ranchu.c
+F:	arch/mips/configs/generic/board-ranchu.config
+
 RANDOM NUMBER DRIVER
 M:	"Theodore Ts'o" <tytso@mit.edu>
 S:	Maintained

arch/mips/Kconfig

@@ -7,8 +7,6 @@ config MIPS
 	select ARCH_DISCARD_MEMBLOCK
 	select ARCH_HAS_ELF_RANDOMIZE
 	select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
-	select ARCH_MIGHT_HAVE_PC_PARPORT
-	select ARCH_MIGHT_HAVE_PC_SERIO
 	select ARCH_SUPPORTS_UPROBES
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
@@ -119,12 +117,12 @@ config MIPS_GENERIC
 	select SYS_SUPPORTS_MULTITHREADING
 	select SYS_SUPPORTS_RELOCATABLE
 	select SYS_SUPPORTS_SMARTMIPS
-	select USB_EHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
-	select USB_EHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
-	select USB_OHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
-	select USB_OHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
-	select USB_UHCI_BIG_ENDIAN_DESC if BIG_ENDIAN
-	select USB_UHCI_BIG_ENDIAN_MMIO if BIG_ENDIAN
+	select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
+	select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
+	select USB_UHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
+	select USB_UHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USE_OF
 	help
 	  Select this to build a kernel which aims to support multiple boards,
@@ -253,6 +251,7 @@ config BCM47XX
 	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_MIPS16
+	select SYS_SUPPORTS_ZBOOT
 	select SYS_HAS_EARLY_PRINTK
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select GPIOLIB
@@ -341,6 +340,8 @@ config MACH_DECSTATION
 
 config MACH_JAZZ
 	bool "Jazz family of machines"
+	select ARCH_MIGHT_HAVE_PC_PARPORT
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select FW_ARC
 	select FW_ARC32
 	select ARCH_MAY_HAVE_PC_FDC
@@ -476,6 +477,8 @@ config MACH_PISTACHIO
 config MIPS_MALTA
 	bool "MIPS Malta board"
 	select ARCH_MAY_HAVE_PC_FDC
+	select ARCH_MIGHT_HAVE_PC_PARPORT
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select BOOT_ELF32
 	select BOOT_RAW
 	select BUILTIN_DTB
@@ -613,6 +616,7 @@ config SGI_IP22
 	bool "SGI IP22 (Indy/Indigo2)"
 	select FW_ARC
 	select FW_ARC32
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select BOOT_ELF32
 	select CEVT_R4K
 	select CSRC_R4K
@@ -675,6 +679,7 @@ config SGI_IP28
 	bool "SGI IP28 (Indigo2 R10k)"
 	select FW_ARC
 	select FW_ARC64
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select BOOT_ELF64
 	select CEVT_R4K
 	select CSRC_R4K
@@ -824,6 +829,8 @@ config SNI_RM
 	select FW_ARC32 if CPU_LITTLE_ENDIAN
 	select FW_SNIPROM if CPU_BIG_ENDIAN
 	select ARCH_MAY_HAVE_PC_FDC
+	select ARCH_MIGHT_HAVE_PC_PARPORT
+	select ARCH_MIGHT_HAVE_PC_SERIO
 	select BOOT_ELF32
 	select CEVT_R4K
 	select CSRC_R4K

arch/mips/Makefile

@@ -216,6 +216,12 @@ cflags-$(toolchain-msa)			+= -DTOOLCHAIN_SUPPORTS_MSA
 endif
 toolchain-virt				:= $(call cc-option-yn,$(mips-cflags) -mvirt)
 cflags-$(toolchain-virt)		+= -DTOOLCHAIN_SUPPORTS_VIRT
+# For -mmicromips, use -Wa,-fatal-warnings to catch unsupported -mxpa which
+# only warns
+xpa-cflags-y				:= $(mips-cflags)
+xpa-cflags-$(micromips-ase)		+= -mmicromips -Wa$(comma)-fatal-warnings
+toolchain-xpa				:= $(call cc-option-yn,$(xpa-cflags-y) -mxpa)
+cflags-$(toolchain-xpa)			+= -DTOOLCHAIN_SUPPORTS_XPA
 
 #
 # Firmware support
@@ -228,7 +234,7 @@ libs-y				+= arch/mips/fw/lib/
 #
 # Kernel compression
 #
-ifdef SYS_SUPPORTS_ZBOOT
+ifdef CONFIG_SYS_SUPPORTS_ZBOOT
 COMPRESSION_FNAME		= vmlinuz
 else
 COMPRESSION_FNAME		= vmlinux

arch/mips/bcm47xx/Platform

@@ -5,3 +5,4 @@ platform-$(CONFIG_BCM47XX)	+= bcm47xx/
 cflags-$(CONFIG_BCM47XX)	+=					\
 		-I$(srctree)/arch/mips/include/asm/mach-bcm47xx
 load-$(CONFIG_BCM47XX)		:= 0xffffffff80001000
+zload-$(CONFIG_BCM47XX)		+= 0xffffffff80400000

arch/mips/boot/compressed/Makefile

@@ -133,4 +133,8 @@ vmlinuz.srec: vmlinuz
 uzImage.bin: vmlinuz.bin FORCE
 	$(call if_changed,uimage,none)
 
-clean-files := $(objtree)/vmlinuz $(objtree)/vmlinuz.{32,ecoff,bin,srec}
+clean-files += $(objtree)/vmlinuz
+clean-files += $(objtree)/vmlinuz.32
+clean-files += $(objtree)/vmlinuz.ecoff
+clean-files += $(objtree)/vmlinuz.bin
+clean-files += $(objtree)/vmlinuz.srec

arch/mips/boot/dts/ingenic/Makefile

 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_JZ4740_QI_LB60)	+= qi_lb60.dtb
+dtb-$(CONFIG_JZ4770_GCW0)	+= gcw0.dtb
 dtb-$(CONFIG_JZ4780_CI20)	+= ci20.dtb
 
 obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))

arch/mips/boot/dts/ingenic/gcw0.dts

+// SPDX-License-Identifier: GPL-2.0
+/dts-v1/;
+
+#include "jz4770.dtsi"
+
+/ {
+	compatible = "gcw,zero", "ingenic,jz4770";
+	model = "GCW Zero";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
+	};
+
+	chosen {
+		stdout-path = "serial2:57600n8";
+	};
+
+	board {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		otg_phy: otg-phy {
+			compatible = "usb-nop-xceiv";
+			clocks = <&cgu JZ4770_CLK_OTG_PHY>;
+			clock-names = "main_clk";
+		};
+	};
+};
+
+&ext {
+	clock-frequency = <12000000>;
+};
+
+&uart2 {
+	status = "okay";
+};
+
+&cgu {
+	/* Put high-speed peripherals under PLL1, such that we can change the
+	 * PLL0 frequency on demand without having to suspend peripherals.
+	 * We use a rate of 432 MHz, which is the least common multiple of
+	 * 27 MHz (required by TV encoder) and 48 MHz (required by USB host).
+	 */
+	assigned-clocks =
+		<&cgu JZ4770_CLK_PLL1>,
+		<&cgu JZ4770_CLK_UHC>;
+	assigned-clock-parents =
+		<0>,
+		<&cgu JZ4770_CLK_PLL1>;
+	assigned-clock-rates =
+		<432000000>;
+};
+
+&uhc {
+	/* The WiFi module is connected to the UHC. */
+	status = "okay";
+};

arch/mips/boot/dts/ingenic/jz4770.dtsi

+// SPDX-License-Identifier: GPL-2.0
+
+#include <dt-bindings/clock/jz4770-cgu.h>
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	compatible = "ingenic,jz4770";
+
+	cpuintc: interrupt-controller {
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+		interrupt-controller;
+		compatible = "mti,cpu-interrupt-controller";
+	};
+
+	intc: interrupt-controller@10001000 {
+		compatible = "ingenic,jz4770-intc";
+		reg = <0x10001000 0x40>;
+
+		interrupt-controller;
+		#interrupt-cells = <1>;
+
+		interrupt-parent = <&cpuintc>;
+		interrupts = <2>;
+	};
+
+	ext: ext {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+	};
+
+	osc32k: osc32k {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+	};
+
+	cgu: jz4770-cgu@10000000 {
+		compatible = "ingenic,jz4770-cgu";
+		reg = <0x10000000 0x100>;
+
+		clocks = <&ext>, <&osc32k>;
+		clock-names = "ext", "osc32k";
+
+		#clock-cells = <1>;
+	};
+
+	pinctrl: pin-controller@10010000 {
+		compatible = "ingenic,jz4770-pinctrl";
+		reg = <0x10010000 0x600>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		gpa: gpio@0 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <0>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 0 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <17>;
+		};
+
+		gpb: gpio@1 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <1>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 32 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <16>;
+		};
+
+		gpc: gpio@2 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <2>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 64 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <15>;
+		};
+
+		gpd: gpio@3 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <3>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 96 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <14>;
+		};
+
+		gpe: gpio@4 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <4>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 128 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <13>;
+		};
+
+		gpf: gpio@5 {
+			compatible = "ingenic,jz4770-gpio";
+			reg = <5>;
+
+			gpio-controller;
+			gpio-ranges = <&pinctrl 0 160 32>;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+
+			interrupt-parent = <&intc>;
+			interrupts = <12>;
+		};
+	};
+
+	uart0: serial@10030000 {
+		compatible = "ingenic,jz4770-uart";
+		reg = <0x10030000 0x100>;
+
+		clocks = <&ext>, <&cgu JZ4770_CLK_UART0>;
+		clock-names = "baud", "module";
+
+		interrupt-parent = <&intc>;
+		interrupts = <5>;
+
+		status = "disabled";
+	};
+
+	uart1: serial@10031000 {
+		compatible = "ingenic,jz4770-uart";
+		reg = <0x10031000 0x100>;
+
+		clocks = <&ext>, <&cgu JZ4770_CLK_UART1>;
+		clock-names = "baud", "module";
+
+		interrupt-parent = <&intc>;
+		interrupts = <4>;
+
+		status = "disabled";
+	};
+
+	uart2: serial@10032000 {
+		compatible = "ingenic,jz4770-uart";
+		reg = <0x10032000 0x100>;
+
+		clocks = <&ext>, <&cgu JZ4770_CLK_UART2>;
+		clock-names = "baud", "module";
+
+		interrupt-parent = <&intc>;
+		interrupts = <3>;
+
+		status = "disabled";
+	};
+
+	uart3: serial@10033000 {
+		compatible = "ingenic,jz4770-uart";
+		reg = <0x10033000 0x100>;
+
+		clocks = <&ext>, <&cgu JZ4770_CLK_UART3>;
+		clock-names = "baud", "module";
+
+		interrupt-parent = <&intc>;
+		interrupts = <2>;
+
+		status = "disabled";
+	};
+
+	uhc: uhc@13430000 {
+		compatible = "generic-ohci";
+		reg = <0x13430000 0x1000>;
+
+		clocks = <&cgu JZ4770_CLK_UHC>, <&cgu JZ4770_CLK_UHC_PHY>;
+		assigned-clocks = <&cgu JZ4770_CLK_UHC>;
+		assigned-clock-rates = <48000000>;
+
+		interrupt-parent = <&intc>;
+		interrupts = <20>;
+
+		status = "disabled";
+	};
+};

arch/mips/configs/bigsur_defconfig

@@ -153,7 +153,6 @@ CONFIG_SLIP_COMPRESSED=y
 CONFIG_SLIP_SMART=y
 CONFIG_SLIP_MODE_SLIP6=y
 # CONFIG_INPUT is not set
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 CONFIG_SERIAL_NONSTANDARD=y

arch/mips/configs/gcw0_defconfig

+CONFIG_MACH_INGENIC=y
+CONFIG_JZ4770_GCW0=y
+CONFIG_HIGHMEM=y
+# CONFIG_BOUNCE is not set
+CONFIG_PREEMPT_VOLUNTARY=y
+# CONFIG_SECCOMP is not set
+CONFIG_NO_HZ_IDLE=y
+CONFIG_HIGH_RES_TIMERS=y
+CONFIG_EMBEDDED=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_SUSPEND is not set
+CONFIG_NET=y
+CONFIG_PACKET=y
+CONFIG_UNIX=y
+CONFIG_INET=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_NETDEVICES=y
+CONFIG_SERIAL_8250=y
+# CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_INGENIC=y
+CONFIG_USB=y
+CONFIG_USB_OHCI_HCD=y
+CONFIG_USB_OHCI_HCD_PLATFORM=y
+CONFIG_NOP_USB_XCEIV=y
+CONFIG_TMPFS=y

arch/mips/configs/generic/board-ranchu.config

+CONFIG_VIRT_BOARD_RANCHU=y
+
+CONFIG_BATTERY_GOLDFISH=y
+CONFIG_FB=y
+CONFIG_FB_GOLDFISH=y
+CONFIG_GOLDFISH=y
+CONFIG_STAGING=y
+CONFIG_GOLDFISH_AUDIO=y
+CONFIG_GOLDFISH_PIC=y
+CONFIG_GOLDFISH_PIPE=y
+CONFIG_GOLDFISH_TTY=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_GOLDFISH=y
+
+CONFIG_INPUT_EVDEV=y
+CONFIG_INPUT_KEYBOARD=y
+CONFIG_KEYBOARD_GOLDFISH_EVENTS=y
+
+CONFIG_MAGIC_SYSRQ=y
+CONFIG_POWER_SUPPLY=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_SYSCON=y
+CONFIG_POWER_RESET_SYSCON_POWEROFF=y
+
+CONFIG_VIRTIO_BLK=y
+CONFIG_VIRTIO_CONSOLE=y
+CONFIG_VIRTIO_MMIO=y
+CONFIG_VIRTIO_MMIO_CMDLINE_DEVICES=y
+CONFIG_NETDEVICES=y
+CONFIG_VIRTIO_NET=y

arch/mips/configs/ip27_defconfig

@@ -252,7 +252,6 @@ CONFIG_RT2800PCI=m
 CONFIG_WL12XX=m
 CONFIG_WL1251=m
 # CONFIG_INPUT is not set
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_LIBPS2=m
 CONFIG_SERIO_RAW=m
 CONFIG_SERIO_ALTERA_PS2=m

arch/mips/configs/ip32_defconfig

@@ -75,7 +75,6 @@ CONFIG_DE2104X=m
 CONFIG_TULIP=m
 CONFIG_TULIP_MMIO=y
 CONFIG_INPUT_EVDEV=m
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_MACEPS2=y
 CONFIG_SERIO_RAW=y
 # CONFIG_CONSOLE_TRANSLATIONS is not set

arch/mips/configs/malta_defconfig

@@ -312,9 +312,8 @@ CONFIG_HOSTAP_PCI=m
 CONFIG_IPW2100=m
 CONFIG_IPW2100_MONITOR=y
 CONFIG_LIBERTAS=m
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_MOUSE_PS2_ELANTECH=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_POWER_RESET=y

arch/mips/configs/malta_kvm_defconfig

@@ -324,9 +324,7 @@ CONFIG_HOSTAP_PCI=m
 CONFIG_IPW2100=m
 CONFIG_IPW2100_MONITOR=y
 CONFIG_LIBERTAS=m
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
+CONFIG_INPUT_MOUSEDEV=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_POWER_RESET=y

arch/mips/configs/malta_kvm_guest_defconfig

@@ -326,9 +326,7 @@ CONFIG_HOSTAP_PCI=m
 CONFIG_IPW2100=m
 CONFIG_IPW2100_MONITOR=y
 CONFIG_LIBERTAS=m
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
+CONFIG_INPUT_MOUSEDEV=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_POWER_RESET=y

arch/mips/configs/malta_qemu_32r6_defconfig

@@ -126,6 +126,7 @@ CONFIG_PCNET32=y
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV=y
 # CONFIG_VT is not set
 CONFIG_LEGACY_PTY_COUNT=4
 CONFIG_SERIAL_8250=y

arch/mips/configs/maltaaprp_defconfig

@@ -126,6 +126,7 @@ CONFIG_PCNET32=y
 # CONFIG_NET_VENDOR_TOSHIBA is not set
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV=y
 # CONFIG_VT is not set
 CONFIG_LEGACY_PTY_COUNT=16
 CONFIG_SERIAL_8250=y

arch/mips/configs/maltasmvp_defconfig

@@ -127,6 +127,7 @@ CONFIG_PCNET32=y
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV=y
 # CONFIG_VT is not set
 CONFIG_LEGACY_PTY_COUNT=4
 CONFIG_SERIAL_8250=y

arch/mips/configs/maltasmvp_eva_defconfig

@@ -130,6 +130,7 @@ CONFIG_PCNET32=y
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_NET_VENDOR_WIZNET is not set
 # CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV=y
 # CONFIG_VT is not set
 CONFIG_LEGACY_PTY_COUNT=4
 CONFIG_SERIAL_8250=y

arch/mips/configs/maltaup_defconfig

@@ -125,6 +125,7 @@ CONFIG_PCNET32=y
 # CONFIG_NET_VENDOR_TOSHIBA is not set
 # CONFIG_NET_VENDOR_VIA is not set
 # CONFIG_WLAN is not set
+CONFIG_INPUT_MOUSEDEV=y
 # CONFIG_VT is not set
 CONFIG_LEGACY_PTY_COUNT=16
 CONFIG_SERIAL_8250=y

arch/mips/configs/maltaup_xpa_defconfig

@@ -321,9 +321,8 @@ CONFIG_HOSTAP_PCI=m
 CONFIG_IPW2100=m
 CONFIG_IPW2100_MONITOR=y
 CONFIG_LIBERTAS=m
-# CONFIG_INPUT_KEYBOARD is not set
-# CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
+CONFIG_INPUT_MOUSEDEV=y
+CONFIG_MOUSE_PS2_ELANTECH=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_POWER_RESET=y

arch/mips/configs/nlm_xlp_defconfig

@@ -399,7 +399,6 @@ CONFIG_INPUT_EVDEV=y
 CONFIG_INPUT_EVBUG=m
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_SERPORT=m
 CONFIG_SERIO_LIBPS2=y
 CONFIG_SERIO_RAW=m

arch/mips/configs/nlm_xlr_defconfig

@@ -332,7 +332,6 @@ CONFIG_INPUT_EVDEV=y
 CONFIG_INPUT_EVBUG=m
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_SERPORT=m
 CONFIG_SERIO_LIBPS2=y
 CONFIG_SERIO_RAW=m

arch/mips/configs/pnx8335_stb225_defconfig

@@ -49,7 +49,6 @@ CONFIG_INPUT_EVDEV=m
 CONFIG_INPUT_EVBUG=m
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
-# CONFIG_SERIO_I8042 is not set
 # CONFIG_VT_CONSOLE is not set
 CONFIG_SERIAL_PNX8XXX=y
 CONFIG_SERIAL_PNX8XXX_CONSOLE=y

arch/mips/configs/sb1250_swarm_defconfig

@@ -65,7 +65,6 @@ CONFIG_NET_ETHERNET=y
 CONFIG_MII=y
 CONFIG_SB1250_MAC=y
 # CONFIG_INPUT is not set
-# CONFIG_SERIO_I8042 is not set
 CONFIG_SERIO_RAW=m
 # CONFIG_VT is not set
 # CONFIG_HW_RANDOM is not set

arch/mips/generic/Kconfig

@@ -49,4 +49,14 @@ config FIT_IMAGE_FDT_XILFPGA
 	  Enable this to include the FDT for the MIPSfpga platform
 	  from Imagination Technologies in the FIT kernel image.
 
+config VIRT_BOARD_RANCHU
+	bool "Support Ranchu platform for Android emulator"
+	help
+	  This enables support for the platform used by Android emulator.
+
+	  Ranchu platform consists of a set of virtual devices. This platform
+	  enables emulation of variety of virtual configurations while using
+	  Android emulator. Android emulator is based on Qemu, and contains
+	  the support for the same set of virtual devices.
+
 endif

arch/mips/generic/Makefile

@@ -15,3 +15,4 @@ obj-y += proc.o
 obj-$(CONFIG_YAMON_DT_SHIM)		+= yamon-dt.o
 obj-$(CONFIG_LEGACY_BOARD_SEAD3)	+= board-sead3.o
 obj-$(CONFIG_KEXEC)			+= kexec.o
+obj-$(CONFIG_VIRT_BOARD_RANCHU)		+= board-ranchu.o

arch/mips/generic/board-ranchu.c

+/*
+ * Support code for virtual Ranchu board for MIPS.
+ *
+ * Author: Miodrag Dinic <miodrag.dinic@mips.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.
+ */
+
+#include <linux/of_address.h>
+#include <linux/types.h>
+
+#include <asm/machine.h>
+#include <asm/mipsregs.h>
+#include <asm/time.h>
+
+#define GOLDFISH_TIMER_LOW		0x00
+#define GOLDFISH_TIMER_HIGH		0x04
+
+static __init u64 read_rtc_time(void __iomem *base)
+{
+	u32 time_low;
+	u32 time_high;
+
+	/*
+	 * Reading the low address latches the high value
+	 * as well so there is no fear that we may read
+	 * inaccurate high value.
+	 */
+	time_low = readl(base + GOLDFISH_TIMER_LOW);
+	time_high = readl(base + GOLDFISH_TIMER_HIGH);
+
+	return ((u64)time_high << 32) | time_low;
+}
+
+static __init unsigned int ranchu_measure_hpt_freq(void)
+{
+	u64 rtc_start, rtc_current, rtc_delta;
+	unsigned int start, count;
+	struct device_node *np;
+	void __iomem *rtc_base;
+
+	np = of_find_compatible_node(NULL, NULL, "google,goldfish-rtc");
+	if (!np)
+		panic("%s(): Failed to find 'google,goldfish-rtc' dt node!",
+		      __func__);
+
+	rtc_base = of_iomap(np, 0);
+	if (!rtc_base)
+		panic("%s(): Failed to ioremap Goldfish RTC base!", __func__);
+
+	/*
+	 * Poll the nanosecond resolution RTC for one
+	 * second to calibrate the CPU frequency.
+	 */
+	rtc_start = read_rtc_time(rtc_base);
+	start = read_c0_count();
+
+	do {
+		rtc_current = read_rtc_time(rtc_base);
+		rtc_delta = rtc_current - rtc_start;
+	} while (rtc_delta < NSEC_PER_SEC);
+
+	count = read_c0_count() - start;
+
+	/*
+	 * Make sure the frequency will be a round number.
+	 * Without this correction, the returned value may vary
+	 * between subsequent emulation executions.
+	 *
+	 * TODO: Set this value using device tree.
+	 */
+	count += 5000;
+	count -= count % 10000;
+
+	iounmap(rtc_base);
+
+	return count;
+}
+
+static const struct of_device_id ranchu_of_match[] __initconst = {
+	{
+		.compatible = "mti,ranchu",
+	},
+	{}
+};
+
+MIPS_MACHINE(ranchu) = {
+	.matches = ranchu_of_match,
+	.measure_hpt_freq = ranchu_measure_hpt_freq,
+};

arch/mips/generic/irq.c

@@ -22,10 +22,10 @@ int get_c0_fdc_int(void)
 {
 	int mips_cpu_fdc_irq;
 
-	if (cpu_has_veic)
-		panic("Unimplemented!");
-	else if (mips_gic_present())
+	if (mips_gic_present())
 		mips_cpu_fdc_irq = gic_get_c0_fdc_int();
+	else if (cpu_has_veic)
+		panic("Unimplemented!");
 	else if (cp0_fdc_irq >= 0)
 		mips_cpu_fdc_irq = MIPS_CPU_IRQ_BASE + cp0_fdc_irq;
 	else
@@ -38,10 +38,10 @@ int get_c0_perfcount_int(void)
 {
 	int mips_cpu_perf_irq;
 
-	if (cpu_has_veic)
-		panic("Unimplemented!");
-	else if (mips_gic_present())
+	if (mips_gic_present())
 		mips_cpu_perf_irq = gic_get_c0_perfcount_int();
+	else if (cpu_has_veic)
+		panic("Unimplemented!");
 	else if (cp0_perfcount_irq >= 0)
 		mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq;
 	else
@@ -54,10 +54,10 @@ unsigned int get_c0_compare_int(void)
 {
 	int mips_cpu_timer_irq;
 
-	if (cpu_has_veic)
-		panic("Unimplemented!");
-	else if (mips_gic_present())
+	if (mips_gic_present())
 		mips_cpu_timer_irq = gic_get_c0_compare_int();
+	else if (cpu_has_veic)
+		panic("Unimplemented!");
 	else
 		mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq;
 

arch/mips/include/asm/bootinfo.h

@@ -79,6 +79,8 @@ enum loongson_machine_type {
  */
 #define  MACH_INGENIC_JZ4730	0	/* JZ4730 SOC		*/
 #define  MACH_INGENIC_JZ4740	1	/* JZ4740 SOC		*/
+#define  MACH_INGENIC_JZ4770	2	/* JZ4770 SOC		*/
+#define  MACH_INGENIC_JZ4780	3	/* JZ4780 SOC		*/
 
 extern char *system_type;
 const char *get_system_type(void);

arch/mips/include/asm/checksum.h

@@ -110,7 +110,7 @@ __wsum csum_partial_copy_nocheck(const void *src, void *dst,
  */
 static inline __sum16 csum_fold(__wsum csum)
 {
-	u32 sum = (__force u32)csum;;
+	u32 sum = (__force u32)csum;
 
 	sum += (sum << 16);
 	csum = (sum < csum);

arch/mips/include/asm/mach-loongson64/boot_param.h

@@ -4,7 +4,7 @@
 
 #define SYSTEM_RAM_LOW		1
 #define SYSTEM_RAM_HIGH		2
-#define MEM_RESERVED		3
+#define SYSTEM_RAM_RESERVED	3
 #define PCI_IO			4
 #define PCI_MEM			5
 #define LOONGSON_CFG_REG	6

arch/mips/include/asm/machine.h

@@ -52,7 +52,7 @@ mips_machine_is_compatible(const struct mips_machine *mach, const void *fdt)
 	if (!mach->matches)
 		return NULL;
 
-	for (match = mach->matches; match->compatible; match++) {
+	for (match = mach->matches; match->compatible[0]; match++) {
 		if (fdt_node_check_compatible(fdt, 0, match->compatible) == 0)
 			return match;
 	}

arch/mips/include/asm/msa.h

@@ -160,7 +160,23 @@ static inline void init_msa_upper(void)
 	_init_msa_upper();
 }
 
-#ifdef TOOLCHAIN_SUPPORTS_MSA
+#ifndef TOOLCHAIN_SUPPORTS_MSA
+/*
+ * Define assembler macros using .word for the c[ft]cmsa instructions in order
+ * to allow compilation with toolchains that do not support MSA. Once all
+ * toolchains in use support MSA these can be removed.
+ */
+_ASM_MACRO_2R(cfcmsa, rd, cs,
+	_ASM_INSN_IF_MIPS(0x787e0019 | __cs << 11 | __rd << 6)
+	_ASM_INSN32_IF_MM(0x587e0016 | __cs << 11 | __rd << 6));
+_ASM_MACRO_2R(ctcmsa, cd, rs,
+	_ASM_INSN_IF_MIPS(0x783e0019 | __rs << 11 | __cd << 6)
+	_ASM_INSN32_IF_MM(0x583e0016 | __rs << 11 | __cd << 6));
+#define _ASM_SET_MSA ""
+#else /* TOOLCHAIN_SUPPORTS_MSA */
+#define _ASM_SET_MSA ".set\tfp=64\n\t"				\
+		     ".set\tmsa\n\t"
+#endif
 
 #define __BUILD_MSA_CTL_REG(name, cs)				\
 static inline unsigned int read_msa_##name(void)		\
@@ -168,8 +184,7 @@ static inline unsigned int read_msa_##name(void)		\
 	unsigned int reg;					\
 	__asm__ __volatile__(					\
 	"	.set	push\n"					\
-	"	.set	fp=64\n"				\
-	"	.set	msa\n"					\
+	_ASM_SET_MSA						\
 	"	cfcmsa	%0, $" #cs "\n"				\
 	"	.set	pop\n"					\
 	: "=r"(reg));						\
@@ -180,52 +195,12 @@ static inline void write_msa_##name(unsigned int val)		\
 {								\
 	__asm__ __volatile__(					\
 	"	.set	push\n"					\
-	"	.set	fp=64\n"				\
-	"	.set	msa\n"					\
+	_ASM_SET_MSA						\
 	"	ctcmsa	$" #cs ", %0\n"				\
 	"	.set	pop\n"					\
 	: : "r"(val));						\
 }
 
-#else /* !TOOLCHAIN_SUPPORTS_MSA */
-
-/*
- * Define functions using .word for the c[ft]cmsa instructions in order to
- * allow compilation with toolchains that do not support MSA. Once all
- * toolchains in use support MSA these can be removed.
- */
-
-#define __BUILD_MSA_CTL_REG(name, cs)				\
-static inline unsigned int read_msa_##name(void)		\
-{								\
-	unsigned int reg;					\
-	__asm__ __volatile__(					\
-	"	.set	push\n"					\
-	"	.set	noat\n"					\
-	"	# cfcmsa $1, $%1\n"				\
-	_ASM_INSN_IF_MIPS(0x787e0059 | %1 << 11)		\
-	_ASM_INSN32_IF_MM(0x587e0056 | %1 << 11)		\
-	"	move	%0, $1\n"				\
-	"	.set	pop\n"					\
-	: "=r"(reg) : "i"(cs));					\
-	return reg;						\
-}								\
-								\
-static inline void write_msa_##name(unsigned int val)		\
-{								\
-	__asm__ __volatile__(					\
-	"	.set	push\n"					\
-	"	.set	noat\n"					\
-	"	move	$1, %0\n"				\
-	"	# ctcmsa $%1, $1\n"				\
-	_ASM_INSN_IF_MIPS(0x783e0819 | %1 << 6)			\
-	_ASM_INSN32_IF_MM(0x583e0816 | %1 << 6)			\
-	"	.set	pop\n"					\
-	: : "r"(val), "i"(cs));					\
-}
-
-#endif /* !TOOLCHAIN_SUPPORTS_MSA */
-
 __BUILD_MSA_CTL_REG(ir, 0)
 __BUILD_MSA_CTL_REG(csr, 1)
 __BUILD_MSA_CTL_REG(access, 2)

arch/mips/jz4740/Kconfig

@@ -8,6 +8,10 @@ config JZ4740_QI_LB60
 	bool "Qi Hardware Ben NanoNote"
 	select MACH_JZ4740
 
+config JZ4770_GCW0
+	bool "Game Consoles Worldwide GCW Zero"
+	select MACH_JZ4770
+
 config JZ4780_CI20
 	bool "MIPS Creator CI20"
 	select MACH_JZ4780
@@ -18,6 +22,12 @@ config MACH_JZ4740
 	bool
 	select SYS_HAS_CPU_MIPS32_R1
 
+config MACH_JZ4770
+	bool
+	select MIPS_CPU_SCACHE
+	select SYS_HAS_CPU_MIPS32_R2
+	select SYS_SUPPORTS_HIGHMEM
+
 config MACH_JZ4780
 	bool
 	select MIPS_CPU_SCACHE

arch/mips/jz4740/prom.c

@@ -20,33 +20,12 @@
 #include <linux/serial_reg.h>
 
 #include <asm/bootinfo.h>
+#include <asm/fw/fw.h>
 #include <asm/mach-jz4740/base.h>
 
-static __init void jz4740_init_cmdline(int argc, char *argv[])
-{
-	unsigned int count = COMMAND_LINE_SIZE - 1;
-	int i;
-	char *dst = &(arcs_cmdline[0]);
-	char *src;
-
-	for (i = 1; i < argc && count; ++i) {
-		src = argv[i];
-		while (*src && count) {
-			*dst++ = *src++;
-			--count;
-		}
-		*dst++ = ' ';
-	}
-	if (i > 1)
-		--dst;
-
-	*dst = 0;
-}
-
 void __init prom_init(void)
 {
-	jz4740_init_cmdline((int)fw_arg0, (char **)fw_arg1);
-	mips_machtype = MACH_INGENIC_JZ4740;
+	fw_init_cmdline();
 }
 
 void __init prom_free_prom_memory(void)

arch/mips/jz4740/setup.c

@@ -53,6 +53,16 @@ static void __init jz4740_detect_mem(void)
 	add_memory_region(0, size, BOOT_MEM_RAM);
 }
 
+static unsigned long __init get_board_mach_type(const void *fdt)
+{
+	if (!fdt_node_check_compatible(fdt, 0, "ingenic,jz4780"))
+		return MACH_INGENIC_JZ4780;
+	if (!fdt_node_check_compatible(fdt, 0, "ingenic,jz4770"))
+		return MACH_INGENIC_JZ4770;
+
+	return MACH_INGENIC_JZ4740;
+}
+
 void __init plat_mem_setup(void)
 {
 	int offset;
@@ -63,6 +73,8 @@ void __init plat_mem_setup(void)
 	offset = fdt_path_offset(__dtb_start, "/memory");
 	if (offset < 0)
 		jz4740_detect_mem();
+
+	mips_machtype = get_board_mach_type(__dtb_start);
 }
 
 void __init device_tree_init(void)
@@ -75,10 +87,14 @@ void __init device_tree_init(void)
 
 const char *get_system_type(void)
 {
-	if (IS_ENABLED(CONFIG_MACH_JZ4780))
+	switch (mips_machtype) {
+	case MACH_INGENIC_JZ4780:
 		return "JZ4780";
-
-	return "JZ4740";
+	case MACH_INGENIC_JZ4770:
+		return "JZ4770";
+	default:
+		return "JZ4740";
+	}
 }
 
 void __init arch_init_irq(void)

arch/mips/jz4740/time.c

@@ -113,7 +113,7 @@ static struct clock_event_device jz4740_clockevent = {
 #ifdef CONFIG_MACH_JZ4740
 	.irq = JZ4740_IRQ_TCU0,
 #endif
-#ifdef CONFIG_MACH_JZ4780
+#if defined(CONFIG_MACH_JZ4770) || defined(CONFIG_MACH_JZ4780)
 	.irq = JZ4780_IRQ_TCU2,
 #endif
 };

arch/mips/kernel/branch.c

@@ -399,7 +399,7 @@ int __MIPS16e_compute_return_epc(struct pt_regs *regs)
  *
  * @regs:	Pointer to pt_regs
  * @insn:	branch instruction to decode
- * @returns:	-EFAULT on error and forces SIGILL, and on success
+ * Return:	-EFAULT on error and forces SIGILL, and on success
  *		returns 0 or BRANCH_LIKELY_TAKEN as appropriate after
  *		evaluating the branch.
  *

arch/mips/kernel/ftrace.c

@@ -361,7 +361,7 @@ void prepare_ftrace_return(unsigned long *parent_ra_addr, unsigned long self_ra,
 	 * If fails when getting the stack address of the non-leaf function's
 	 * ra, stop function graph tracer and return
 	 */
-	if (parent_ra_addr == 0)
+	if (parent_ra_addr == NULL)
 		goto out;
 #endif
 	/* *parent_ra_addr = return_hooker; */

arch/mips/kernel/setup.c

@@ -826,25 +826,6 @@ static void __init arch_mem_init(char **cmdline_p)
 	struct memblock_region *reg;
 	extern void plat_mem_setup(void);
 
-	/* call board setup routine */
-	plat_mem_setup();
-
-	/*
-	 * Make sure all kernel memory is in the maps.  The "UP" and
-	 * "DOWN" are opposite for initdata since if it crosses over
-	 * into another memory section you don't want that to be
-	 * freed when the initdata is freed.
-	 */
-	arch_mem_addpart(PFN_DOWN(__pa_symbol(&_text)) << PAGE_SHIFT,
-			 PFN_UP(__pa_symbol(&_edata)) << PAGE_SHIFT,
-			 BOOT_MEM_RAM);
-	arch_mem_addpart(PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT,
-			 PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT,
-			 BOOT_MEM_INIT_RAM);
-
-	pr_info("Determined physical RAM map:\n");
-	print_memory_map();
-
 #if defined(CONFIG_CMDLINE_BOOL) && defined(CONFIG_CMDLINE_OVERRIDE)
 	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 #else
@@ -872,6 +853,26 @@ static void __init arch_mem_init(char **cmdline_p)
 	}
 #endif
 #endif
+
+	/* call board setup routine */
+	plat_mem_setup();
+
+	/*
+	 * Make sure all kernel memory is in the maps.  The "UP" and
+	 * "DOWN" are opposite for initdata since if it crosses over
+	 * into another memory section you don't want that to be
+	 * freed when the initdata is freed.
+	 */
+	arch_mem_addpart(PFN_DOWN(__pa_symbol(&_text)) << PAGE_SHIFT,
+			 PFN_UP(__pa_symbol(&_edata)) << PAGE_SHIFT,
+			 BOOT_MEM_RAM);
+	arch_mem_addpart(PFN_UP(__pa_symbol(&__init_begin)) << PAGE_SHIFT,
+			 PFN_DOWN(__pa_symbol(&__init_end)) << PAGE_SHIFT,
+			 BOOT_MEM_INIT_RAM);
+
+	pr_info("Determined physical RAM map:\n");
+	print_memory_map();
+
 	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 
 	*cmdline_p = command_line;

arch/mips/kernel/smp-cps.c

@@ -439,8 +439,6 @@ void play_dead(void)
 	pr_debug("CPU%d going offline\n", cpu);
 
 	if (cpu_has_mipsmt || cpu_has_vp) {
-		core = cpu_core(&cpu_data[cpu]);
-
 		/* Look for another online VPE within the core */
 		for_each_online_cpu(cpu_death_sibling) {
 			if (!cpus_are_siblings(cpu, cpu_death_sibling))

arch/mips/kernel/watch.c

@@ -18,27 +18,24 @@
 void mips_install_watch_registers(struct task_struct *t)
 {
 	struct mips3264_watch_reg_state *watches = &t->thread.watch.mips3264;
+	unsigned int watchhi = MIPS_WATCHHI_G |		/* Trap all ASIDs */
+			       MIPS_WATCHHI_IRW;	/* Clear result bits */
+
 	switch (current_cpu_data.watch_reg_use_cnt) {
 	default:
 		BUG();
 	case 4:
 		write_c0_watchlo3(watches->watchlo[3]);
-		/* Write 1 to the I, R, and W bits to clear them, and
-		   1 to G so all ASIDs are trapped. */
-		write_c0_watchhi3(MIPS_WATCHHI_G | MIPS_WATCHHI_IRW |
-				  watches->watchhi[3]);
+		write_c0_watchhi3(watchhi | watches->watchhi[3]);
 	case 3:
 		write_c0_watchlo2(watches->watchlo[2]);
-		write_c0_watchhi2(MIPS_WATCHHI_G | MIPS_WATCHHI_IRW |
-				  watches->watchhi[2]);
+		write_c0_watchhi2(watchhi | watches->watchhi[2]);
 	case 2:
 		write_c0_watchlo1(watches->watchlo[1]);
-		write_c0_watchhi1(MIPS_WATCHHI_G | MIPS_WATCHHI_IRW |
-				  watches->watchhi[1]);
+		write_c0_watchhi1(watchhi | watches->watchhi[1]);
 	case 1:
 		write_c0_watchlo0(watches->watchlo[0]);
-		write_c0_watchhi0(MIPS_WATCHHI_G | MIPS_WATCHHI_IRW |
-				  watches->watchhi[0]);
+		write_c0_watchhi0(watchhi | watches->watchhi[0]);
 	}
 }
 
@@ -51,21 +48,19 @@ void mips_read_watch_registers(void)
 {
 	struct mips3264_watch_reg_state *watches =
 		&current->thread.watch.mips3264;
+	unsigned int watchhi_mask = MIPS_WATCHHI_MASK | MIPS_WATCHHI_IRW;
+
 	switch (current_cpu_data.watch_reg_use_cnt) {
 	default:
 		BUG();
 	case 4:
-		watches->watchhi[3] = (read_c0_watchhi3() &
-				       (MIPS_WATCHHI_MASK | MIPS_WATCHHI_IRW));
+		watches->watchhi[3] = (read_c0_watchhi3() & watchhi_mask);
 	case 3:
-		watches->watchhi[2] = (read_c0_watchhi2() &
-				       (MIPS_WATCHHI_MASK | MIPS_WATCHHI_IRW));
+		watches->watchhi[2] = (read_c0_watchhi2() & watchhi_mask);
 	case 2:
-		watches->watchhi[1] = (read_c0_watchhi1() &
-				       (MIPS_WATCHHI_MASK | MIPS_WATCHHI_IRW));
+		watches->watchhi[1] = (read_c0_watchhi1() & watchhi_mask);
 	case 1:
-		watches->watchhi[0] = (read_c0_watchhi0() &
-				       (MIPS_WATCHHI_MASK | MIPS_WATCHHI_IRW));
+		watches->watchhi[0] = (read_c0_watchhi0() & watchhi_mask);
 	}
 	if (current_cpu_data.watch_reg_use_cnt == 1 &&
 	    (watches->watchhi[0] & MIPS_WATCHHI_IRW) == 0) {

arch/mips/loongson64/Kconfig

@@ -17,7 +17,6 @@ config LEMOTE_FULOONG2E
 	select I8259
 	select ISA
 	select IRQ_MIPS_CPU
-	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_64BIT_KERNEL
 	select SYS_SUPPORTS_LITTLE_ENDIAN
 	select SYS_SUPPORTS_HIGHMEM
@@ -49,7 +48,6 @@ config LEMOTE_MACH2F
 	select ISA
 	select SYS_HAS_CPU_LOONGSON2F
 	select SYS_HAS_EARLY_PRINTK
-	select SYS_SUPPORTS_32BIT_KERNEL
 	select SYS_SUPPORTS_64BIT_KERNEL
 	select SYS_SUPPORTS_HIGHMEM
 	select SYS_SUPPORTS_LITTLE_ENDIAN

arch/mips/loongson64/common/mem.c

@@ -79,7 +79,7 @@ void __init prom_init_memory(void)
 					(u64)loongson_memmap->map[i].mem_size << 20,
 					BOOT_MEM_RAM);
 				break;
-			case MEM_RESERVED:
+			case SYSTEM_RAM_RESERVED:
 				add_memory_region(loongson_memmap->map[i].mem_start,
 					(u64)loongson_memmap->map[i].mem_size << 20,
 					BOOT_MEM_RESERVED);

arch/mips/loongson64/loongson-3/numa.c

@@ -166,7 +166,7 @@ static void __init szmem(unsigned int node)
 			memblock_add_node(PFN_PHYS(start_pfn),
 				PFN_PHYS(end_pfn - start_pfn), node);
 			break;
-		case MEM_RESERVED:
+		case SYSTEM_RAM_RESERVED:
 			pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx MB\n",
 				(u32)node_id, mem_type, mem_start, mem_size);
 			add_memory_region((node_id << 44) + mem_start,

arch/mips/math-emu/cp1emu.c

@@ -451,7 +451,7 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 					regs->cp0_epc + dec_insn.pc_inc +
 					dec_insn.next_pc_inc;
 			}
-			/* Fall through */
+			/* fall through */
 		case jr_op:
 			/* For R6, JR already emulated in jalr_op */
 			if (NO_R6EMU && insn.r_format.func == jr_op)
@@ -471,10 +471,11 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 			regs->regs[31] = regs->cp0_epc +
 				dec_insn.pc_inc +
 				dec_insn.next_pc_inc;
-			/* Fall through */
+			/* fall through */
 		case bltzl_op:
 			if (NO_R6EMU)
 				break;
+			/* fall through */
 		case bltz_op:
 			if ((long)regs->regs[insn.i_format.rs] < 0)
 				*contpc = regs->cp0_epc +
@@ -494,10 +495,11 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 			regs->regs[31] = regs->cp0_epc +
 				dec_insn.pc_inc +
 				dec_insn.next_pc_inc;
-			/* Fall through */
+			/* fall through */
 		case bgezl_op:
 			if (NO_R6EMU)
 				break;
+			/* fall through */
 		case bgez_op:
 			if ((long)regs->regs[insn.i_format.rs] >= 0)
 				*contpc = regs->cp0_epc +
@@ -512,11 +514,12 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 		break;
 	case jalx_op:
 		set_isa16_mode(bit);
+		/* fall through */
 	case jal_op:
 		regs->regs[31] = regs->cp0_epc +
 			dec_insn.pc_inc +
 			dec_insn.next_pc_inc;
-		/* Fall through */
+		/* fall through */
 	case j_op:
 		*contpc = regs->cp0_epc + dec_insn.pc_inc;
 		*contpc >>= 28;
@@ -528,6 +531,7 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 	case beql_op:
 		if (NO_R6EMU)
 			break;
+		/* fall through */
 	case beq_op:
 		if (regs->regs[insn.i_format.rs] ==
 		    regs->regs[insn.i_format.rt])
@@ -542,6 +546,7 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 	case bnel_op:
 		if (NO_R6EMU)
 			break;
+		/* fall through */
 	case bne_op:
 		if (regs->regs[insn.i_format.rs] !=
 		    regs->regs[insn.i_format.rt])
@@ -556,6 +561,7 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 	case blezl_op:
 		if (!insn.i_format.rt && NO_R6EMU)
 			break;
+		/* fall through */
 	case blez_op:
 
 		/*
@@ -593,6 +599,7 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 	case bgtzl_op:
 		if (!insn.i_format.rt && NO_R6EMU)
 			break;
+		/* fall through */
 	case bgtz_op:
 		/*
 		 * Compact branches for R6 for the
@@ -729,7 +736,8 @@ int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
 
 			return 1;
 		}
-		/* R2/R6 compatible cop1 instruction. Fall through */
+		/* R2/R6 compatible cop1 instruction */
+		/* fall through */
 	case cop2_op:
 	case cop1x_op:
 		if (insn.i_format.rs == bc_op) {
@@ -1190,7 +1198,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			if (!cpu_has_mips_r6 || delay_slot(xcp))
 				return SIGILL;
 
-			cond = likely = 0;
+			likely = 0;
+			cond = 0;
 			fpr = &current->thread.fpu.fpr[MIPSInst_RT(ir)];
 			bit0 = get_fpr32(fpr, 0) & 0x1;
 			switch (MIPSInst_RS(ir)) {
@@ -1220,14 +1229,14 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 			case bcfl_op:
 				if (cpu_has_mips_2_3_4_5_r)
 					likely = 1;
-				/* Fall through */
+				/* fall through */
 			case bcf_op:
 				cond = !cond;
 				break;
 			case bctl_op:
 				if (cpu_has_mips_2_3_4_5_r)
 					likely = 1;
-				/* Fall through */
+				/* fall through */
 			case bct_op:
 				break;
 			}
@@ -1353,7 +1362,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx,
 				return SIGILL;
 
 			/* a real fpu computation instruction */
-			if ((sig = fpu_emu(xcp, ctx, ir)))
+			sig = fpu_emu(xcp, ctx, ir);
+			if (sig)
 				return sig;
 		}
 		break;

arch/mips/math-emu/dp_add.c

@@ -104,8 +104,7 @@ union ieee754dp ieee754dp_add(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
-
-		/* FALL THROUGH */
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;

arch/mips/math-emu/dp_div.c

@@ -103,6 +103,7 @@ union ieee754dp ieee754dp_div(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;

arch/mips/math-emu/dp_fmax.c

@@ -96,6 +96,7 @@ union ieee754dp ieee754dp_fmax(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;
@@ -224,6 +225,7 @@ union ieee754dp ieee754dp_fmaxa(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;

arch/mips/math-emu/dp_fmin.c

@@ -96,6 +96,7 @@ union ieee754dp ieee754dp_fmin(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;
@@ -224,6 +225,7 @@ union ieee754dp ieee754dp_fmina(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;

arch/mips/math-emu/dp_maddf.c

@@ -16,7 +16,7 @@
 
 
 /* 128 bits shift right logical with rounding. */
-void srl128(u64 *hptr, u64 *lptr, int count)
+static void srl128(u64 *hptr, u64 *lptr, int count)
 {
 	u64 low;
 
@@ -157,6 +157,7 @@ static union ieee754dp _dp_maddf(union ieee754dp z, union ieee754dp x,
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		if (zc == IEEE754_CLASS_INF)
@@ -173,7 +174,7 @@ static union ieee754dp _dp_maddf(union ieee754dp z, union ieee754dp x,
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_NORM):
 		if (zc == IEEE754_CLASS_INF)
 			return ieee754dp_inf(zs);
-		/* fall through to real computations */
+		/* continue to real computations */
 	}
 
 	/* Finally get to do some computation */
@@ -201,9 +202,6 @@ static union ieee754dp _dp_maddf(union ieee754dp z, union ieee754dp x,
 	 * Multiply 64 bits xm and ym to give 128 bits result in hrm:lrm.
 	 */
 
-	/* 32 * 32 => 64 */
-#define DPXMULT(x, y)	((u64)(x) * (u64)y)
-
 	lxm = xm;
 	hxm = xm >> 32;
 	lym = ym;

arch/mips/math-emu/dp_mul.c

@@ -101,6 +101,7 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		DPDNORMY;
@@ -128,9 +129,6 @@ union ieee754dp ieee754dp_mul(union ieee754dp x, union ieee754dp y)
 	 * Multiply 64 bits xm, ym to give high 64 bits rm with stickness.
 	 */
 
-	/* 32 * 32 => 64 */
-#define DPXMULT(x, y)	((u64)(x) * (u64)y)
-
 	lxm = xm;
 	hxm = xm >> 32;
 	lym = ym;

arch/mips/math-emu/dp_sqrt.c

@@ -91,7 +91,8 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 		scalx -= 256;
 	}
 
-	y = x = builddp(0, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT);
+	x = builddp(0, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT);
+	y = x;
 
 	/* magic initial approximation to almost 8 sig. bits */
 	yh = y.bits >> 32;
@@ -108,7 +109,8 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 
 	/* triple to almost 56 sig. bits: y ~= sqrt(x) to within 1 ulp */
 	/* t=y*y; z=t;	pt[n0]+=0x00100000; t+=z; z=(x-z)*y; */
-	z = t = ieee754dp_mul(y, y);
+	t = ieee754dp_mul(y, y);
+	z = t;
 	t.bexp += 0x001;
 	t = ieee754dp_add(t, z);
 	z = ieee754dp_mul(ieee754dp_sub(x, z), y);
@@ -140,7 +142,7 @@ union ieee754dp ieee754dp_sqrt(union ieee754dp x)
 		switch (oldcsr.rm) {
 		case FPU_CSR_RU:
 			y.bits += 1;
-			/* drop through */
+			/* fall through */
 		case FPU_CSR_RN:
 			t.bits += 1;
 			break;

arch/mips/math-emu/dp_sub.c

@@ -106,7 +106,7 @@ union ieee754dp ieee754dp_sub(union ieee754dp x, union ieee754dp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		DPDNORMX;
-		/* FALL THROUGH */
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		/* normalize ym,ye */

arch/mips/math-emu/ieee754dp.h

@@ -55,6 +55,9 @@ static inline int ieee754dp_finite(union ieee754dp x)
 #define XDPSRS1(v)	\
 	(((v) >> 1) | ((v) & 1))
 
+/* 32bit * 32bit => 64bit unsigned integer multiplication */
+#define DPXMULT(x, y)	((u64)(x) * (u64)y)
+
 /* convert denormal to normalized with extended exponent */
 #define DPDNORMx(m,e) \
 	while ((m >> DP_FBITS) == 0) { m <<= 1; e--; }

arch/mips/math-emu/sp_add.c

@@ -104,8 +104,7 @@ union ieee754sp ieee754sp_add(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
-
-		/* FALL THROUGH */
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_div.c

@@ -103,6 +103,7 @@ union ieee754sp ieee754sp_div(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_fdp.c

@@ -46,7 +46,8 @@ union ieee754sp ieee754sp_fdp(union ieee754dp x)
 	case IEEE754_CLASS_SNAN:
 		x = ieee754dp_nanxcpt(x);
 		EXPLODEXDP;
-		/* Fall through.  */
+		/* fall through */
+
 	case IEEE754_CLASS_QNAN:
 		y = ieee754sp_nan_fdp(xs, xm);
 		if (!ieee754_csr.nan2008) {

arch/mips/math-emu/sp_fmax.c

@@ -96,6 +96,7 @@ union ieee754sp ieee754sp_fmax(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;
@@ -224,6 +225,7 @@ union ieee754sp ieee754sp_fmaxa(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_fmin.c

@@ -96,6 +96,7 @@ union ieee754sp ieee754sp_fmin(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;
@@ -224,6 +225,7 @@ union ieee754sp ieee754sp_fmina(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_maddf.c

@@ -126,6 +126,7 @@ static union ieee754sp _sp_maddf(union ieee754sp z, union ieee754sp x,
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		if (zc == IEEE754_CLASS_INF)
@@ -142,7 +143,7 @@ static union ieee754sp _sp_maddf(union ieee754sp z, union ieee754sp x,
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_NORM):
 		if (zc == IEEE754_CLASS_INF)
 			return ieee754sp_inf(zs);
-		/* fall through to real computations */
+		/* continue to real computations */
 	}
 
 	/* Finally get to do some computation */

arch/mips/math-emu/sp_mul.c

@@ -101,6 +101,7 @@ union ieee754sp ieee754sp_mul(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_sqrt.c

@@ -82,7 +82,8 @@ union ieee754sp ieee754sp_sqrt(union ieee754sp x)
 
 	/* generate sqrt(x) bit by bit */
 	ix += ix;
-	q = s = 0;		/* q = sqrt(x) */
+	s = 0;
+	q = 0;			/* q = sqrt(x) */
 	r = 0x01000000;		/* r = moving bit from right to left */
 
 	while (r != 0) {

arch/mips/math-emu/sp_sub.c

@@ -106,6 +106,7 @@ union ieee754sp ieee754sp_sub(union ieee754sp x, union ieee754sp y)
 
 	case CLPAIR(IEEE754_CLASS_DNORM, IEEE754_CLASS_DNORM):
 		SPDNORMX;
+		/* fall through */
 
 	case CLPAIR(IEEE754_CLASS_NORM, IEEE754_CLASS_DNORM):
 		SPDNORMY;

arch/mips/math-emu/sp_tlong.c

@@ -20,7 +20,6 @@
  */
 
 #include "ieee754sp.h"
-#include "ieee754dp.h"
 
 s64 ieee754sp_tlong(union ieee754sp x)
 {

arch/mips/mm/dma-default.c

@@ -370,11 +370,6 @@ static void mips_dma_sync_sg_for_device(struct device *dev,
 	}
 }
 
-static int mips_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
-	return 0;
-}
-
 static int mips_dma_supported(struct device *dev, u64 mask)
 {
 	return plat_dma_supported(dev, mask);
@@ -401,7 +396,6 @@ static const struct dma_map_ops mips_default_dma_map_ops = {
 	.sync_single_for_device = mips_dma_sync_single_for_device,
 	.sync_sg_for_cpu = mips_dma_sync_sg_for_cpu,
 	.sync_sg_for_device = mips_dma_sync_sg_for_device,
-	.mapping_error = mips_dma_mapping_error,
 	.dma_supported = mips_dma_supported,
 	.cache_sync = mips_dma_cache_sync,
 };

arch/mips/mm/sc-mips.c

@@ -16,6 +16,7 @@
 #include <asm/mmu_context.h>
 #include <asm/r4kcache.h>
 #include <asm/mips-cps.h>
+#include <asm/bootinfo.h>
 
 /*
  * MIPS32/MIPS64 L2 cache handling
@@ -220,6 +221,14 @@ static inline int __init mips_sc_probe(void)
 	else
 		return 0;
 
+	/*
+	 * According to config2 it would be 5-ways, but that is contradicted
+	 * by all documentation.
+	 */
+	if (current_cpu_type() == CPU_JZRISC &&
+				mips_machtype == MACH_INGENIC_JZ4770)
+		c->scache.ways = 4;
+
 	c->scache.waysize = c->scache.sets * c->scache.linesz;
 	c->scache.waybit = __ffs(c->scache.waysize);
 

drivers/clk/ingenic/Makefile

 obj-y				+= cgu.o
 obj-$(CONFIG_MACH_JZ4740)	+= jz4740-cgu.o
+obj-$(CONFIG_MACH_JZ4770)	+= jz4770-cgu.o
 obj-$(CONFIG_MACH_JZ4780)	+= jz4780-cgu.o

drivers/clk/ingenic/cgu.c

@@ -100,15 +100,13 @@ ingenic_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 	n += pll_info->n_offset;
 	od_enc = ctl >> pll_info->od_shift;
 	od_enc &= GENMASK(pll_info->od_bits - 1, 0);
-	bypass = !!(ctl & BIT(pll_info->bypass_bit));
+	bypass = !pll_info->no_bypass_bit &&
+		 !!(ctl & BIT(pll_info->bypass_bit));
 	enable = !!(ctl & BIT(pll_info->enable_bit));
 
 	if (bypass)
 		return parent_rate;
 
-	if (!enable)
-		return 0;
-
 	for (od = 0; od < pll_info->od_max; od++) {
 		if (pll_info->od_encoding[od] == od_enc)
 			break;
@@ -152,17 +150,25 @@ ingenic_pll_calc(const struct ingenic_cgu_clk_info *clk_info,
 	return div_u64((u64)parent_rate * m, n * od);
 }
 
-static long
-ingenic_pll_round_rate(struct clk_hw *hw, unsigned long req_rate,
-		       unsigned long *prate)
+static inline const struct ingenic_cgu_clk_info *to_clk_info(
+		struct ingenic_clk *ingenic_clk)
 {
-	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
 	struct ingenic_cgu *cgu = ingenic_clk->cgu;
 	const struct ingenic_cgu_clk_info *clk_info;
 
 	clk_info = &cgu->clock_info[ingenic_clk->idx];
 	BUG_ON(clk_info->type != CGU_CLK_PLL);
 
+	return clk_info;
+}
+
+static long
+ingenic_pll_round_rate(struct clk_hw *hw, unsigned long req_rate,
+		       unsigned long *prate)
+{
+	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+	const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
+
 	return ingenic_pll_calc(clk_info, req_rate, *prate, NULL, NULL, NULL);
 }
 
@@ -170,19 +176,14 @@ static int
 ingenic_pll_set_rate(struct clk_hw *hw, unsigned long req_rate,
 		     unsigned long parent_rate)
 {
-	const unsigned timeout = 100;
 	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
 	struct ingenic_cgu *cgu = ingenic_clk->cgu;
-	const struct ingenic_cgu_clk_info *clk_info;
-	const struct ingenic_cgu_pll_info *pll_info;
+	const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
+	const struct ingenic_cgu_pll_info *pll_info = &clk_info->pll;
 	unsigned long rate, flags;
-	unsigned m, n, od, i;
+	unsigned int m, n, od;
 	u32 ctl;
 
-	clk_info = &cgu->clock_info[ingenic_clk->idx];
-	BUG_ON(clk_info->type != CGU_CLK_PLL);
-	pll_info = &clk_info->pll;
-
 	rate = ingenic_pll_calc(clk_info, req_rate, parent_rate,
 			       &m, &n, &od);
 	if (rate != req_rate)
@@ -201,6 +202,26 @@ ingenic_pll_set_rate(struct clk_hw *hw, unsigned long req_rate,
 	ctl &= ~(GENMASK(pll_info->od_bits - 1, 0) << pll_info->od_shift);
 	ctl |= pll_info->od_encoding[od - 1] << pll_info->od_shift;
 
+	writel(ctl, cgu->base + pll_info->reg);
+	spin_unlock_irqrestore(&cgu->lock, flags);
+
+	return 0;
+}
+
+static int ingenic_pll_enable(struct clk_hw *hw)
+{
+	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+	struct ingenic_cgu *cgu = ingenic_clk->cgu;
+	const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
+	const struct ingenic_cgu_pll_info *pll_info = &clk_info->pll;
+	const unsigned int timeout = 100;
+	unsigned long flags;
+	unsigned int i;
+	u32 ctl;
+
+	spin_lock_irqsave(&cgu->lock, flags);
+	ctl = readl(cgu->base + pll_info->reg);
+
 	ctl &= ~BIT(pll_info->bypass_bit);
 	ctl |= BIT(pll_info->enable_bit);
 
@@ -222,10 +243,48 @@ ingenic_pll_set_rate(struct clk_hw *hw, unsigned long req_rate,
 	return 0;
 }
 
+static void ingenic_pll_disable(struct clk_hw *hw)
+{
+	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+	struct ingenic_cgu *cgu = ingenic_clk->cgu;
+	const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
+	const struct ingenic_cgu_pll_info *pll_info = &clk_info->pll;
+	unsigned long flags;
+	u32 ctl;
+
+	spin_lock_irqsave(&cgu->lock, flags);
+	ctl = readl(cgu->base + pll_info->reg);
+
+	ctl &= ~BIT(pll_info->enable_bit);
+
+	writel(ctl, cgu->base + pll_info->reg);
+	spin_unlock_irqrestore(&cgu->lock, flags);
+}
+
+static int ingenic_pll_is_enabled(struct clk_hw *hw)
+{
+	struct ingenic_clk *ingenic_clk = to_ingenic_clk(hw);
+	struct ingenic_cgu *cgu = ingenic_clk->cgu;
+	const struct ingenic_cgu_clk_info *clk_info = to_clk_info(ingenic_clk);
+	const struct ingenic_cgu_pll_info *pll_info = &clk_info->pll;
+	unsigned long flags;
+	u32 ctl;
+
+	spin_lock_irqsave(&cgu->lock, flags);
+	ctl = readl(cgu->base + pll_info->reg);
+	spin_unlock_irqrestore(&cgu->lock, flags);
+
+	return !!(ctl & BIT(pll_info->enable_bit));
+}
+
 static const struct clk_ops ingenic_pll_ops = {
 	.recalc_rate = ingenic_pll_recalc_rate,
 	.round_rate = ingenic_pll_round_rate,
 	.set_rate = ingenic_pll_set_rate,
+
+	.enable = ingenic_pll_enable,
+	.disable = ingenic_pll_disable,
+	.is_enabled = ingenic_pll_is_enabled,
 };
 
 /*
@@ -328,6 +387,8 @@ ingenic_clk_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 		div *= clk_info->div.div;
 
 		rate /= div;
+	} else if (clk_info->type & CGU_CLK_FIXDIV) {
+		rate /= clk_info->fixdiv.div;
 	}
 
 	return rate;
@@ -598,6 +659,7 @@ static int ingenic_register_clock(struct ingenic_cgu *cgu, unsigned idx)
 		}
 	} else if (caps & CGU_CLK_PLL) {
 		clk_init.ops = &ingenic_pll_ops;
+		clk_init.flags |= CLK_SET_RATE_GATE;
 
 		caps &= ~CGU_CLK_PLL;
 

drivers/clk/ingenic/cgu.h

@@ -48,6 +48,7 @@
  * @bypass_bit: the index of the bypass bit in the PLL control register
  * @enable_bit: the index of the enable bit in the PLL control register
  * @stable_bit: the index of the stable bit in the PLL control register
+ * @no_bypass_bit: if set, the PLL has no bypass functionality
  */
 struct ingenic_cgu_pll_info {
 	unsigned reg;
@@ -58,6 +59,7 @@ struct ingenic_cgu_pll_info {
 	u8 bypass_bit;
 	u8 enable_bit;
 	u8 stable_bit;
+	bool no_bypass_bit;
 };
 
 /**
@@ -120,7 +122,7 @@ struct ingenic_cgu_gate_info {
  * @clk_ops: custom clock operation callbacks
  */
 struct ingenic_cgu_custom_info {
-	struct clk_ops *clk_ops;
+	const struct clk_ops *clk_ops;
 };
 
 /**

drivers/clk/ingenic/jz4780-cgu.c

@@ -203,7 +203,7 @@ static int jz4780_otg_phy_set_rate(struct clk_hw *hw, unsigned long req_rate,
 	return 0;
 }
 
-static struct clk_ops jz4780_otg_phy_ops = {
+static const struct clk_ops jz4780_otg_phy_ops = {
 	.get_parent = jz4780_otg_phy_get_parent,
 	.set_parent = jz4780_otg_phy_set_parent,
 

include/dt-bindings/clock/jz4770-cgu.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides clock numbers for the ingenic,jz4770-cgu DT binding.
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_JZ4770_CGU_H__
+#define __DT_BINDINGS_CLOCK_JZ4770_CGU_H__
+
+#define JZ4770_CLK_EXT		0
+#define JZ4770_CLK_OSC32K	1
+#define JZ4770_CLK_PLL0		2
+#define JZ4770_CLK_PLL1		3
+#define JZ4770_CLK_CCLK		4
+#define JZ4770_CLK_H0CLK	5
+#define JZ4770_CLK_H1CLK	6
+#define JZ4770_CLK_H2CLK	7
+#define JZ4770_CLK_C1CLK	8
+#define JZ4770_CLK_PCLK		9
+#define JZ4770_CLK_MMC0_MUX	10
+#define JZ4770_CLK_MMC0		11
+#define JZ4770_CLK_MMC1_MUX	12
+#define JZ4770_CLK_MMC1		13
+#define JZ4770_CLK_MMC2_MUX	14
+#define JZ4770_CLK_MMC2		15
+#define JZ4770_CLK_CIM		16
+#define JZ4770_CLK_UHC		17
+#define JZ4770_CLK_GPU		18
+#define JZ4770_CLK_BCH		19
+#define JZ4770_CLK_LPCLK_MUX	20
+#define JZ4770_CLK_GPS		21
+#define JZ4770_CLK_SSI_MUX	22
+#define JZ4770_CLK_PCM_MUX	23
+#define JZ4770_CLK_I2S		24
+#define JZ4770_CLK_OTG		25
+#define JZ4770_CLK_SSI0		26
+#define JZ4770_CLK_SSI1		27
+#define JZ4770_CLK_SSI2		28
+#define JZ4770_CLK_PCM0		29
+#define JZ4770_CLK_PCM1		30
+#define JZ4770_CLK_DMA		31
+#define JZ4770_CLK_I2C0		32
+#define JZ4770_CLK_I2C1		33
+#define JZ4770_CLK_I2C2		34
+#define JZ4770_CLK_UART0	35
+#define JZ4770_CLK_UART1	36
+#define JZ4770_CLK_UART2	37
+#define JZ4770_CLK_UART3	38
+#define JZ4770_CLK_IPU		39
+#define JZ4770_CLK_ADC		40
+#define JZ4770_CLK_AIC		41
+#define JZ4770_CLK_AUX		42
+#define JZ4770_CLK_VPU		43
+#define JZ4770_CLK_UHC_PHY	44
+#define JZ4770_CLK_OTG_PHY	45
+#define JZ4770_CLK_EXT512	46
+#define JZ4770_CLK_RTC		47
+
+#endif /* __DT_BINDINGS_CLOCK_JZ4770_CGU_H__ */