Merge tag 'mips_4.16' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/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 <[email protected]>
@@ -9215,6 +9216,25 @@ F:	arch/mips/include/asm/mach-loongson32/
 F:	drivers/*/*loongson1*
 F:	drivers/*/*/*loongson1*
 
+MIPS/LOONGSON2 ARCHITECTURE
+M:	Jiaxun Yang <[email protected]>
+L:	[email protected]
+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 <[email protected]>
+L:	[email protected]
+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 <[email protected]>
 L:	[email protected]
@@ -11586,6 +11606,13 @@ S:	Maintained
 F:	Documentation/blockdev/ramdisk.txt
 F:	drivers/block/brd.c
 
+RANCHU VIRTUAL BOARD FOR MIPS
+M:	Miodrag Dinic <[email protected]>
+L:	[email protected]
+S:	Supported
+F:	arch/mips/generic/board-ranchu.c
+F:	arch/mips/configs/generic/board-ranchu.config
+
 RANDOM NUMBER DRIVER
 M:	"Theodore Ts'o" <[email protected]>
 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

@@ -1,5 +1,6 @@
 # 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

@@ -0,0 +1,62 @@
+// 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";
+};