Merge tag 'mips_6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from Thomas Bogendoerfer:

 - added support for Mobileye SoCs

 - unified GPR/CP0 regs handling for uasm

 - cleanups and fixes

* tag 'mips_6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (56 commits)
  mips: cm: Convert __mips_cm_phys_base() to weak function
  mips: cm: Convert __mips_cm_l2sync_phys_base() to weak function
  mips: dts: ralink: mt7621: add cell count properties to usb
  mips: dts: ralink: mt7621: add serial1 and serial2 nodes
  mips: dts: ralink: mt7621: reorder serial0 properties
  mips: dts: ralink: mt7621: associate uart1_pins with serial0
  MIPS: ralink: Don't use "proxy" headers
  mips: sibyte: make tb_class constant
  mips: mt: make mt_class constant
  MIPS: ralink: Remove unused of_gpio.h
  bus: bt1-apb: Remove duplicate include
  MAINTAINERS: remove entry to non-existing file in MOBILEYE MIPS SOCS
  MIPS: mipsregs: Parse fp and sp register by name in parse_r
  tty: mips_ejtag_fdc: Fix passing incompatible pointer type warning
  mips: zboot: Fix "no previous prototype" build warning
  MIPS: mipsregs: Set proper ISA level for virt extensions
  MIPS: Implement microMIPS MT ASE helpers
  MIPS: Limit MIPS_MT_SMP support by ISA reversion
  MIPS: Loongson64: test for -march=loongson3a cflag
  MIPS: BMIPS: Drop unnecessary assembler flag
  ...

Author: torvalds

Documentation/devicetree/bindings/mips/cpus.yaml

@@ -23,22 +23,23 @@ properties:
       - brcm,bmips4380
       - brcm,bmips5000
       - brcm,bmips5200
-      - ingenic,xburst-mxu1.0
+      - img,i6500
       - ingenic,xburst-fpu1.0-mxu1.1
       - ingenic,xburst-fpu2.0-mxu2.0
+      - ingenic,xburst-mxu1.0
       - ingenic,xburst2-fpu2.1-mxu2.1-smt
       - loongson,gs264
       - mips,m14Kc
-      - mips,mips4Kc
-      - mips,mips4KEc
-      - mips,mips24Kc
+      - mips,mips1004Kc
       - mips,mips24KEc
+      - mips,mips24Kc
+      - mips,mips4KEc
+      - mips,mips4Kc
       - mips,mips74Kc
-      - mips,mips1004Kc
       - mti,interaptiv
-      - mti,mips24KEc
       - mti,mips14KEc
       - mti,mips14Kc
+      - mti,mips24KEc
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/mips/mobileye.yaml

@@ -0,0 +1,32 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+# Copyright 2023 Mobileye Vision Technologies Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mips/mobileye.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mobileye SoC series
+
+maintainers:
+  - Vladimir Kondratiev <vladimir.kondratiev@intel.com>
+  - Gregory CLEMENT <gregory.clement@bootlin.com>
+  - Théo Lebrun <theo.lebrun@bootlin.com>
+
+description:
+  Boards with a Mobileye SoC shall have the following properties.
+
+properties:
+  $nodename:
+    const: '/'
+
+  compatible:
+    oneOf:
+      - description: Boards with Mobileye EyeQ5 SoC
+        items:
+          - enum:
+              - mobileye,eyeq5-epm5
+          - const: mobileye,eyeq5
+
+additionalProperties: true
+
+...

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -941,6 +941,8 @@ patternProperties:
     description: Miyoo
   "^mntre,.*":
     description: MNT Research GmbH
+  "^mobileye,.*":
+    description: Mobileye Vision Technologies Ltd.
   "^modtronix,.*":
     description: Modtronix Engineering
   "^moortec,.*":

MAINTAINERS

@@ -14741,6 +14741,17 @@ F:	arch/mips/
 F:	drivers/platform/mips/
 F:	include/dt-bindings/mips/
 
+MIPS BAIKAL-T1 PLATFORM
+M:	Serge Semin <fancer.lancer@gmail.com>
+L:	linux-mips@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/bus/baikal,bt1-*.yaml
+F:	Documentation/devicetree/bindings/clock/baikal,bt1-*.yaml
+F:	drivers/bus/bt1-*.c
+F:	drivers/clk/baikal-t1/
+F:	drivers/memory/bt1-l2-ctl.c
+F:	drivers/mtd/maps/physmap-bt1-rom.[ch]
+
 MIPS BOSTON DEVELOPMENT BOARD
 M:	Paul Burton <paulburton@kernel.org>
 L:	linux-mips@vger.kernel.org
@@ -14861,6 +14872,17 @@ W:	https://linuxtv.org
 Q:	http://patchwork.linuxtv.org/project/linux-media/list/
 F:	drivers/media/dvb-frontends/mn88473*
 
+MOBILEYE MIPS SOCS
+M:	Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>
+M:	Gregory CLEMENT <gregory.clement@bootlin.com>
+M:	Théo Lebrun <theo.lebrun@bootlin.com>
+L:	linux-mips@vger.kernel.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/mips/mobileye.yaml
+F:	arch/mips/boot/dts/mobileye/
+F:	arch/mips/configs/eyeq5_defconfig
+F:	arch/mips/mobileye/board-epm5.its.S
+
 MODULE SUPPORT
 M:	Luis Chamberlain <mcgrof@kernel.org>
 L:	linux-modules@vger.kernel.org

arch/mips/Kbuild

@@ -11,6 +11,7 @@ obj- := $(platform-y)
 # mips object files
 # The object files are linked as core-y files would be linked
 
+obj-y += generic/
 obj-y += kernel/
 obj-y += mm/
 obj-y += net/

arch/mips/Kbuild.platforms

@@ -17,6 +17,7 @@ platform-$(CONFIG_MACH_LOONGSON2EF)	+= loongson2ef/
 platform-$(CONFIG_MACH_LOONGSON32)	+= loongson32/
 platform-$(CONFIG_MACH_LOONGSON64)	+= loongson64/
 platform-$(CONFIG_MIPS_MALTA)		+= mti-malta/
+platform-$(CONFIG_MACH_EYEQ5)		+= mobileye/
 platform-$(CONFIG_MACH_NINTENDO64)	+= n64/
 platform-$(CONFIG_PIC32MZDA)		+= pic32/
 platform-$(CONFIG_RALINK)		+= ralink/

arch/mips/Kconfig

@@ -113,6 +113,9 @@ config MIPS_FIXUP_BIGPHYS_ADDR
 config MIPS_GENERIC
 	bool
 
+config MACH_GENERIC_CORE
+	bool
+
 config MACH_INGENIC
 	bool
 	select SYS_SUPPORTS_32BIT_KERNEL
@@ -149,6 +152,7 @@ config MIPS_GENERIC_KERNEL
 	select DMA_NONCOHERENT
 	select HAVE_PCI
 	select IRQ_MIPS_CPU
+	select MACH_GENERIC_CORE
 	select MIPS_AUTO_PFN_OFFSET
 	select MIPS_CPU_SCACHE
 	select MIPS_GIC
@@ -417,6 +421,7 @@ config MACH_INGENIC_SOC
 	bool "Ingenic SoC based machines"
 	select MIPS_GENERIC
 	select MACH_INGENIC
+	select MACH_GENERIC_CORE
 	select SYS_SUPPORTS_ZBOOT_UART16550
 	select CPU_SUPPORTS_CPUFREQ
 	select MIPS_EXTERNAL_TIMER
@@ -570,6 +575,59 @@ config MACH_PIC32
 	  Microchip PIC32 is a family of general-purpose 32 bit MIPS core
 	  microcontrollers.
 
+config MACH_EYEQ5
+	bool "Mobileye EyeQ5 SoC"
+	select MACH_GENERIC_CORE
+	select ARM_AMBA
+	select PHYSICAL_START_BOOL
+	select ARCH_SPARSEMEM_DEFAULT if 64BIT
+	select BOOT_RAW
+	select BUILTIN_DTB
+	select CEVT_R4K
+	select CLKSRC_MIPS_GIC
+	select COMMON_CLK
+	select CPU_MIPSR2_IRQ_EI
+	select CPU_MIPSR2_IRQ_VI
+	select CSRC_R4K
+	select DMA_NONCOHERENT
+	select HAVE_PCI
+	select IRQ_MIPS_CPU
+	select MIPS_AUTO_PFN_OFFSET
+	select MIPS_CPU_SCACHE
+	select MIPS_GIC
+	select MIPS_L1_CACHE_SHIFT_7
+	select PCI_DRIVERS_GENERIC
+	select SMP_UP if SMP
+	select SWAP_IO_SPACE
+	select SYS_HAS_CPU_MIPS64_R6
+	select SYS_SUPPORTS_64BIT_KERNEL
+	select SYS_SUPPORTS_HIGHMEM
+	select SYS_SUPPORTS_LITTLE_ENDIAN
+	select SYS_SUPPORTS_MIPS_CPS
+	select SYS_SUPPORTS_RELOCATABLE
+	select SYS_SUPPORTS_ZBOOT
+	select UHI_BOOT
+	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 supporting EyeQ5 SoC from Mobileye.
+
+	bool
+
+config FIT_IMAGE_FDT_EPM5
+	bool "Include FDT for Mobileye EyeQ5 development platforms"
+	depends on MACH_EYEQ5
+	default n
+	help
+	  Enable this to include the FDT for the EyeQ5 development platforms
+	  from Mobileye in the FIT kernel image.
+	  This requires u-boot on the platform.
+
 config MACH_NINTENDO64
 	bool "Nintendo 64 console"
 	select CEVT_R4K
@@ -603,6 +661,7 @@ config RALINK
 config MACH_REALTEK_RTL
 	bool "Realtek RTL838x/RTL839x based machines"
 	select MIPS_GENERIC
+	select MACH_GENERIC_CORE
 	select DMA_NONCOHERENT
 	select IRQ_MIPS_CPU
 	select CSRC_R4K
@@ -1273,44 +1332,6 @@ config CPU_LOONGSON64
 	  3B1000, 3B1500, 3A2000, 3A3000 and 3A4000) processors. However, old
 	  Loongson-2E/2F is not covered here and will be removed in future.
 
-config LOONGSON3_ENHANCEMENT
-	bool "New Loongson-3 CPU Enhancements"
-	default n
-	depends on CPU_LOONGSON64
-	help
-	  New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
-	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
-	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
-	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
-	  Fast TLB refill support, etc.
-
-	  This option enable those enhancements which are not probed at run
-	  time. If you want a generic kernel to run on all Loongson 3 machines,
-	  please say 'N' here. If you want a high-performance kernel to run on
-	  new Loongson-3 machines only, please say 'Y' here.
-
-config CPU_LOONGSON3_WORKAROUNDS
-	bool "Loongson-3 LLSC Workarounds"
-	default y if SMP
-	depends on CPU_LOONGSON64
-	help
-	  Loongson-3 processors have the llsc issues which require workarounds.
-	  Without workarounds the system may hang unexpectedly.
-
-	  Say Y, unless you know what you are doing.
-
-config CPU_LOONGSON3_CPUCFG_EMULATION
-	bool "Emulate the CPUCFG instruction on older Loongson cores"
-	default y
-	depends on CPU_LOONGSON64
-	help
-	  Loongson-3A R4 and newer have the CPUCFG instruction available for
-	  userland to query CPU capabilities, much like CPUID on x86. This
-	  option provides emulation of the instruction on older Loongson
-	  cores, back to Loongson-3A1000.
-
-	  If unsure, please say Y.
-
 config CPU_LOONGSON2E
 	bool "Loongson 2E"
 	depends on SYS_HAS_CPU_LOONGSON2E
@@ -1650,6 +1671,44 @@ config CPU_BMIPS
 
 endchoice
 
+config LOONGSON3_ENHANCEMENT
+	bool "New Loongson-3 CPU Enhancements"
+	default n
+	depends on CPU_LOONGSON64
+	help
+	  New Loongson-3 cores (since Loongson-3A R2, as opposed to Loongson-3A
+	  R1, Loongson-3B R1 and Loongson-3B R2) has many enhancements, such as
+	  FTLB, L1-VCache, EI/DI/Wait/Prefetch instruction, DSP/DSPr2 ASE, User
+	  Local register, Read-Inhibit/Execute-Inhibit, SFB (Store Fill Buffer),
+	  Fast TLB refill support, etc.
+
+	  This option enable those enhancements which are not probed at run
+	  time. If you want a generic kernel to run on all Loongson 3 machines,
+	  please say 'N' here. If you want a high-performance kernel to run on
+	  new Loongson-3 machines only, please say 'Y' here.
+
+config CPU_LOONGSON3_WORKAROUNDS
+	bool "Loongson-3 LLSC Workarounds"
+	default y if SMP
+	depends on CPU_LOONGSON64
+	help
+	  Loongson-3 processors have the llsc issues which require workarounds.
+	  Without workarounds the system may hang unexpectedly.
+
+	  Say Y, unless you know what you are doing.
+
+config CPU_LOONGSON3_CPUCFG_EMULATION
+	bool "Emulate the CPUCFG instruction on older Loongson cores"
+	default y
+	depends on CPU_LOONGSON64
+	help
+	  Loongson-3A R4 and newer have the CPUCFG instruction available for
+	  userland to query CPU capabilities, much like CPUID on x86. This
+	  option provides emulation of the instruction on older Loongson
+	  cores, back to Loongson-3A1000.
+
+	  If unsure, please say Y.
+
 config CPU_MIPS32_3_5_FEATURES
 	bool "MIPS32 Release 3.5 Features"
 	depends on SYS_HAS_CPU_MIPS32_R3_5
@@ -2124,7 +2183,8 @@ config CPU_R4K_CACHE_TLB
 config MIPS_MT_SMP
 	bool "MIPS MT SMP support (1 TC on each available VPE)"
 	default y
-	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6 && !CPU_MICROMIPS
+	depends on TARGET_ISA_REV > 0 && TARGET_ISA_REV < 6
+	depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MICROMIPS
 	select CPU_MIPSR2_IRQ_VI
 	select CPU_MIPSR2_IRQ_EI
 	select SYNC_R4K

arch/mips/Makefile

@@ -148,10 +148,10 @@ cflags-y += $(call cc-option,-Wa$(comma)-mno-fix-loongson3-llsc,)
 #
 # CPU-dependent compiler/assembler options for optimization.
 #
-cflags-$(CONFIG_CPU_R3000)	+= -march=r3000
-cflags-$(CONFIG_CPU_R4300)	+= -march=r4300 -Wa,--trap
-cflags-$(CONFIG_CPU_R4X00)	+= -march=r4600 -Wa,--trap
-cflags-$(CONFIG_CPU_TX49XX)	+= -march=r4600 -Wa,--trap
+cflags-$(CONFIG_CPU_R3000)	+= $(call cc-option,-march=r3000,-march=mips1)
+cflags-$(CONFIG_CPU_R4300)	+= $(call cc-option,-march=r4300,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_R4X00)	+= $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_TX49XX)	+= $(call cc-option,-march=r4600,-march=mips3) -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R1)	+= -march=mips32 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R2)	+= -march=mips32r2 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS32_R5)	+= -march=mips32r5 -Wa,--trap -modd-spreg
@@ -160,37 +160,35 @@ cflags-$(CONFIG_CPU_MIPS64_R1)	+= -march=mips64 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R2)	+= -march=mips64r2 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R5)	+= -march=mips64r5 -Wa,--trap
 cflags-$(CONFIG_CPU_MIPS64_R6)	+= -march=mips64r6 -Wa,--trap
-cflags-$(CONFIG_CPU_P5600)	+= -march=p5600 -Wa,--trap -modd-spreg
-cflags-$(CONFIG_CPU_R5000)	+= -march=r5000 -Wa,--trap
-cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=r5000) \
+cflags-$(CONFIG_CPU_P5600)	+= $(call cc-option,-march=p5600,-march=mips32r5) \
+			-Wa,--trap -modd-spreg
+cflags-$(CONFIG_CPU_R5000)	+= $(call cc-option,-march=r5000,-march=mips4) \
 			-Wa,--trap
-cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=r5000) \
+cflags-$(CONFIG_CPU_R5500)	+= $(call cc-option,-march=r5500,-march=mips4) \
 			-Wa,--trap
-cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=r5000) \
+cflags-$(CONFIG_CPU_NEVADA)	+= $(call cc-option,-march=rm5200,-march=mips4) \
 			-Wa,--trap
-cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=r5000) \
+cflags-$(CONFIG_CPU_RM7000)	+= $(call cc-option,-march=rm7000,-march=mips4) \
+			-Wa,--trap
+cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-march=sb1,-march=mips64r1) \
 			-Wa,--trap
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mdmx)
 cflags-$(CONFIG_CPU_SB1)	+= $(call cc-option,-mno-mips3d)
-cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=r8000) \
+cflags-$(CONFIG_CPU_R10000)	+= $(call cc-option,-march=r10000,-march=mips4) \
 			-Wa,--trap
-cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += $(call cc-option,-march=octeon) -Wa,--trap
-ifeq (,$(findstring march=octeon, $(cflags-$(CONFIG_CPU_CAVIUM_OCTEON))))
-cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -Wa,-march=octeon
-endif
+cflags-$(CONFIG_CPU_CAVIUM_OCTEON) += -march=octeon -Wa,--trap
 cflags-$(CONFIG_CAVIUM_CN63XXP1) += -Wa,-mfix-cn63xxp1
-cflags-$(CONFIG_CPU_BMIPS)	+= -march=mips32 -Wa,-mips32 -Wa,--trap
+cflags-$(CONFIG_CPU_BMIPS)	+= -march=mips32 -Wa,--trap
 
-cflags-$(CONFIG_CPU_LOONGSON2E) += -march=loongson2e -Wa,--trap
-cflags-$(CONFIG_CPU_LOONGSON2F) += -march=loongson2f -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON2E) += \
+			$(call cc-option,-march=loongson2e,-march=mips3) -Wa,--trap
+cflags-$(CONFIG_CPU_LOONGSON2F) += \
+			$(call cc-option,-march=loongson2f,-march=mips3) -Wa,--trap
 # Some -march= flags enable MMI instructions, and GCC complains about that
 # support being enabled alongside -msoft-float. Thus explicitly disable MMI.
 cflags-$(CONFIG_CPU_LOONGSON2EF) += $(call cc-option,-mno-loongson-mmi)
-ifdef CONFIG_CPU_LOONGSON64
-cflags-$(CONFIG_CPU_LOONGSON64)	+= -Wa,--trap
-cflags-$(CONFIG_CC_IS_GCC) += -march=loongson3a
-cflags-$(CONFIG_CC_IS_CLANG) += -march=mips64r2
-endif
+cflags-$(CONFIG_CPU_LOONGSON64)	+= \
+			$(call cc-option,-march=loongson3a,-march=mips64r2) -Wa,--trap
 cflags-$(CONFIG_CPU_LOONGSON64) += $(call cc-option,-mno-loongson-mmi)
 
 cflags-$(CONFIG_CPU_R4000_WORKAROUNDS)	+= $(call cc-option,-mfix-r4000,)
@@ -299,7 +297,7 @@ drivers-$(CONFIG_PCI)		+= arch/mips/pci/
 ifdef CONFIG_64BIT
   ifndef KBUILD_SYM32
     ifeq ($(shell expr $(load-y) \< 0xffffffff80000000), 0)
-      KBUILD_SYM32 = y
+      KBUILD_SYM32 = $(call cc-option-yn, -msym32)
     endif
   endif