Merge tag 'mips_4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS updates from James Hogan:
 "These are the main MIPS changes for 4.18.

  Rough overview:

   - MAINTAINERS: Add Paul Burton as MIPS co-maintainer

   - Misc: Generic compiler intrinsics, Y2038 improvements, Perf+MT fixes

   - Platform support: Netgear WNR1000 V3, Microsemi Ocelot integrated
     switch, Ingenic watchdog cleanups

  More detailed  summary:

  Maintainers:

   - Add Paul Burton as MIPS co-maintainer, as I soon won't have access
     to much MIPS hardware, nor enough time to properly maintain MIPS on
     my own.

  Miscellaneous:

   - Use generic GCC library routines from lib/
     - Add notrace to generic ucmpdi2 implementation
     - Rename compiler intrinsic selects to GENERIC_LIB_*
     - vmlinuz: Use generic ashldi3

   - y2038: Convert update/read_persistent_clock() to *_clock64()
     - sni: Remove read_persistent_clock()

   - perf: Fix perf with MT counting other threads
     - Probe for per-TC perf counters in cpu-probe.c
     - Use correct VPE ID for VPE tracing

  Minor cleanups:

   - Avoid unneeded built-in.a in DTS dirs

   - sc-debugfs: Re-use kstrtobool_from_user

   - memset.S: Reinstate delay slot indentation

   - VPE: Fix spelling "uneeded" -> "Unneeded"

  Platform support:

  BCM47xx:

   - Add support for Netgear WNR1000 V3

   - firmware: Support small NVRAM partitions

   - Use __initdata for LEDs platform data

  Ingenic:

   - Watchdog driver & platform code improvements:
     - Disable clock after stopping counter
     - Use devm_* functions
     - Drop module remove function
     - Move platform reset code to restart handler in driver
     - JZ4740: Convert watchdog instantiation to DT
     - JZ4780: Fix watchdog DT node
     - qi_lb60_defconfig: Enable watchdog driver

  Microsemi:

   - Ocelot: Add support for integrated switch
     - pcb123: Connect phys to ports"

* tag 'mips_4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits)
  MAINTAINERS: Add Paul Burton as MIPS co-maintainer
  MIPS: ptrace: Make FPU context layout comments match reality
  MIPS: memset.S: Reinstate delay slot indentation
  MIPS: perf: Fix perf with MT counting other threads
  MIPS: perf: Use correct VPE ID when setting up VPE tracing
  MIPS: perf: More robustly probe for the presence of per-tc counters
  MIPS: Probe for MIPS MT perf counters per TC
  MIPS: mscc: Connect phys to ports on ocelot_pcb123
  MIPS: mscc: Add switch to ocelot
  MIPS: JZ4740: Drop old platform reset code
  MIPS: qi_lb60: Enable the jz4740-wdt driver
  MIPS: JZ4780: dts: Fix watchdog node
  MIPS: JZ4740: dts: Add bindings for the jz4740-wdt driver
  watchdog: JZ4740: Drop module remove function
  watchdog: JZ4740: Register a restart handler
  watchdog: JZ4740: Use devm_* functions
  watchdog: JZ4740: Disable clock after stopping counter
  MIPS: VPE: Fix spelling mistake: "uneeded" -> "unneeded"
  MIPS: Re-use kstrtobool_from_user()
  MIPS: Convert update_persistent_clock() to update_persistent_clock64()
  ...

53 files changed, 301 insertions, 351 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 7074b2215f36..fe98e459a416 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -22,6 +22,11 @@ config MIPS
 	select GENERIC_CPU_AUTOPROBE
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
+	select GENERIC_LIB_ASHLDI3
+	select GENERIC_LIB_ASHRDI3
+	select GENERIC_LIB_CMPDI2
+	select GENERIC_LIB_LSHRDI3
+	select GENERIC_LIB_UCMPDI2
 	select GENERIC_PCI_IOMAP
 	select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
 	select GENERIC_SMP_IDLE_THREAD
diff --git a/arch/mips/bcm47xx/board.c b/arch/mips/bcm47xx/board.c
index edfaef0d73a4..a80910d2738c 100644
--- a/arch/mips/bcm47xx/board.c
+++ b/arch/mips/bcm47xx/board.c
@@ -172,6 +172,8 @@ struct bcm47xx_board_type_list1 bcm47xx_board_list_board_id[] __initconst = {
 	{{BCM47XX_BOARD_NETGEAR_WNDR4000, "Netgear WNDR4000"}, "U12H181T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WNDR4500V1, "Netgear WNDR4500 V1"}, "U12H189T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WNDR4500V2, "Netgear WNDR4500 V2"}, "U12H224T00_NETGEAR"},
+	{{BCM47XX_BOARD_NETGEAR_WNR1000_V3, "Netgear WNR1000 V3"}, "U12H139T00_NETGEAR"},
+	{{BCM47XX_BOARD_NETGEAR_WNR1000_V3, "Netgear WNR1000 V3"}, "U12H139T50_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WNR2000, "Netgear WNR2000"}, "U12H114T00_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WNR3500L, "Netgear WNR3500L"}, "U12H136T99_NETGEAR"},
 	{{BCM47XX_BOARD_NETGEAR_WNR3500U, "Netgear WNR3500U"}, "U12H136T00_NETGEAR"},
diff --git a/arch/mips/bcm47xx/buttons.c b/arch/mips/bcm47xx/buttons.c
index 88d400d256c4..977990a609ba 100644
--- a/arch/mips/bcm47xx/buttons.c
+++ b/arch/mips/bcm47xx/buttons.c
@@ -412,6 +412,12 @@ bcm47xx_buttons_netgear_wndr4500v1[] __initconst = {
 };
 
 static const struct gpio_keys_button
+bcm47xx_buttons_netgear_wnr1000_v3[] __initconst = {
+	BCM47XX_GPIO_KEY(2, KEY_WPS_BUTTON),
+	BCM47XX_GPIO_KEY(3, KEY_RESTART),
+};
+
+static const struct gpio_keys_button
 bcm47xx_buttons_netgear_wnr3500lv1[] __initconst = {
 	BCM47XX_GPIO_KEY(4, KEY_RESTART),
 	BCM47XX_GPIO_KEY(6, KEY_WPS_BUTTON),
@@ -670,6 +676,9 @@ int __init bcm47xx_buttons_register(void)
 	case BCM47XX_BOARD_NETGEAR_WNDR4500V1:
 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wndr4500v1);
 		break;
+	case BCM47XX_BOARD_NETGEAR_WNR1000_V3:
+		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr1000_v3);
+		break;
 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
 		err = bcm47xx_copy_bdata(bcm47xx_buttons_netgear_wnr3500lv1);
 		break;
diff --git a/arch/mips/bcm47xx/leds.c b/arch/mips/bcm47xx/leds.c
index 34a7b3fbdfd9..d85fcdac8bf0 100644
--- a/arch/mips/bcm47xx/leds.c
+++ b/arch/mips/bcm47xx/leds.c
@@ -498,6 +498,12 @@ bcm47xx_leds_netgear_wndr4500v1[] __initconst = {
 };
 
 static const struct gpio_led
+bcm47xx_leds_netgear_wnr1000_v3[] __initconst = {
+	BCM47XX_GPIO_LED(0, "blue", "wlan", 0, LEDS_GPIO_DEFSTATE_OFF),
+	BCM47XX_GPIO_LED(1, "green", "wps", 0, LEDS_GPIO_DEFSTATE_OFF),
+};
+
+static const struct gpio_led
 bcm47xx_leds_netgear_wnr3500lv1[] __initconst = {
 	BCM47XX_GPIO_LED(0, "blue", "wlan", 1, LEDS_GPIO_DEFSTATE_OFF),
 	BCM47XX_GPIO_LED(1, "green", "wps", 1, LEDS_GPIO_DEFSTATE_OFF),
@@ -532,7 +538,7 @@ bcm47xx_leds_simpletech_simpleshare[] __initconst = {
  * Init
  **************************************************/
 
-static struct gpio_led_platform_data bcm47xx_leds_pdata;
+static struct gpio_led_platform_data bcm47xx_leds_pdata __initdata;
 
 #define bcm47xx_set_pdata(dev_leds) do {				\
 	bcm47xx_leds_pdata.leds = dev_leds;				\
@@ -758,6 +764,9 @@ void __init bcm47xx_leds_register(void)
 	case BCM47XX_BOARD_NETGEAR_WNDR4500V1:
 		bcm47xx_set_pdata(bcm47xx_leds_netgear_wndr4500v1);
 		break;
+	case BCM47XX_BOARD_NETGEAR_WNR1000_V3:
+		bcm47xx_set_pdata(bcm47xx_leds_netgear_wnr1000_v3);
+		break;
 	case BCM47XX_BOARD_NETGEAR_WNR3500L:
 		bcm47xx_set_pdata(bcm47xx_leds_netgear_wnr3500lv1);
 		break;
diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index adce180f3ee4..abe77add8789 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -46,10 +46,13 @@ $(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
 
 vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o
 
-extra-y += ashldi3.c bswapsi.c
-$(obj)/ashldi3.o $(obj)/bswapsi.o: KBUILD_CFLAGS += -I$(srctree)/arch/mips/lib
-$(obj)/ashldi3.c $(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c
-	$(call cmd,shipped)
+extra-y += ashldi3.c
+$(obj)/ashldi3.c: $(obj)/%.c: $(srctree)/lib/%.c FORCE
+	$(call if_changed,shipped)
+
+extra-y += bswapsi.c
+$(obj)/bswapsi.c: $(obj)/%.c: $(srctree)/arch/mips/lib/%.c FORCE
+	$(call if_changed,shipped)
 
 targets := $(notdir $(vmlinuzobjs-y))
 
diff --git a/arch/mips/boot/dts/brcm/Makefile b/arch/mips/boot/dts/brcm/Makefile
index d8787c9a499e..d85f446cc0ce 100644
--- a/arch/mips/boot/dts/brcm/Makefile
+++ b/arch/mips/boot/dts/brcm/Makefile
@@ -34,4 +34,4 @@ dtb-$(CONFIG_DT_NONE) += \
 	bcm97425svmb.dtb \
 	bcm97435svmb.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/cavium-octeon/Makefile b/arch/mips/boot/dts/cavium-octeon/Makefile
index 24a8efcd7b03..17aef35f311b 100644
--- a/arch/mips/boot/dts/cavium-octeon/Makefile
+++ b/arch/mips/boot/dts/cavium-octeon/Makefile
@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_CAVIUM_OCTEON_SOC)	+= octeon_3xxx.dtb octeon_68xx.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/ingenic/Makefile b/arch/mips/boot/dts/ingenic/Makefile
index 5b1361a89e02..9cc48441eb71 100644
--- a/arch/mips/boot/dts/ingenic/Makefile
+++ b/arch/mips/boot/dts/ingenic/Makefile
@@ -3,4 +3,4 @@ dtb-$(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, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/ingenic/jz4740.dtsi b/arch/mips/boot/dts/ingenic/jz4740.dtsi
index cd5185bb90ae..26c6b561d6f7 100644
--- a/arch/mips/boot/dts/ingenic/jz4740.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4740.dtsi
@@ -45,6 +45,14 @@
 		#clock-cells = <1>;
 	};
 
+	watchdog: watchdog@10002000 {
+		compatible = "ingenic,jz4740-watchdog";
+		reg = <0x10002000 0x10>;
+
+		clocks = <&cgu JZ4740_CLK_RTC>;
+		clock-names = "rtc";
+	};
+
 	rtc_dev: rtc@10003000 {
 		compatible = "ingenic,jz4740-rtc";
 		reg = <0x10003000 0x40>;
diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi
index b72e53bb7292..aa4e8f75ff5d 100644
--- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
@@ -222,7 +222,10 @@
 
 	watchdog: watchdog@10002000 {
 		compatible = "ingenic,jz4780-watchdog";
-		reg = <0x10002000 0x100>;
+		reg = <0x10002000 0x10>;
+
+		clocks = <&cgu JZ4780_CLK_RTCLK>;
+		clock-names = "rtc";
 	};
 
 	nemc: nemc@13410000 {
diff --git a/arch/mips/boot/dts/lantiq/Makefile b/arch/mips/boot/dts/lantiq/Makefile
index 51ab9c1dff42..f5dfc06242b9 100644
--- a/arch/mips/boot/dts/lantiq/Makefile
+++ b/arch/mips/boot/dts/lantiq/Makefile
@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_DT_EASY50712)	+= easy50712.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/mscc/Makefile b/arch/mips/boot/dts/mscc/Makefile
index c51164537c02..3c6aed9f5439 100644
--- a/arch/mips/boot/dts/mscc/Makefile
+++ b/arch/mips/boot/dts/mscc/Makefile
@@ -1,3 +1,3 @@
 dtb-$(CONFIG_LEGACY_BOARD_OCELOT)	+= ocelot_pcb123.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/mscc/ocelot.dtsi b/arch/mips/boot/dts/mscc/ocelot.dtsi
index dd239cab2f9d..4f33dbc67348 100644
--- a/arch/mips/boot/dts/mscc/ocelot.dtsi
+++ b/arch/mips/boot/dts/mscc/ocelot.dtsi
@@ -91,6 +91,72 @@
 			status = "disabled";
 		};
 
+		switch@1010000 {
+			compatible = "mscc,vsc7514-switch";
+			reg = <0x1010000 0x10000>,
+			      <0x1030000 0x10000>,
+			      <0x1080000 0x100>,
+			      <0x10d0000 0x10000>,
+			      <0x11e0000 0x100>,
+			      <0x11f0000 0x100>,
+			      <0x1200000 0x100>,
+			      <0x1210000 0x100>,
+			      <0x1220000 0x100>,
+			      <0x1230000 0x100>,
+			      <0x1240000 0x100>,
+			      <0x1250000 0x100>,
+			      <0x1260000 0x100>,
+			      <0x1270000 0x100>,
+			      <0x1280000 0x100>,
+			      <0x1800000 0x80000>,
+			      <0x1880000 0x10000>;
+			reg-names = "sys", "rew", "qs", "hsio", "port0",
+				    "port1", "port2", "port3", "port4", "port5",
+				    "port6", "port7", "port8", "port9", "port10",
+				    "qsys", "ana";
+			interrupts = <21 22>;
+			interrupt-names = "xtr", "inj";
+
+			ethernet-ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port0: port@0 {
+					reg = <0>;
+				};
+				port1: port@1 {
+					reg = <1>;
+				};
+				port2: port@2 {
+					reg = <2>;
+				};
+				port3: port@3 {
+					reg = <3>;
+				};
+				port4: port@4 {
+					reg = <4>;
+				};
+				port5: port@5 {
+					reg = <5>;
+				};
+				port6: port@6 {
+					reg = <6>;
+				};
+				port7: port@7 {
+					reg = <7>;
+				};
+				port8: port@8 {
+					reg = <8>;
+				};
+				port9: port@9 {
+					reg = <9>;
+				};
+				port10: port@10 {
+					reg = <10>;
+				};
+			};
+		};
+
 		reset@1070008 {
 			compatible = "mscc,ocelot-chip-reset";
 			reg = <0x1070008 0x4>;
@@ -113,5 +179,27 @@
 				function = "uart2";
 			};
 		};
+
+		mdio0: mdio@107009c {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "mscc,ocelot-miim";
+			reg = <0x107009c 0x36>, <0x10700f0 0x8>;
+			interrupts = <14>;
+			status = "disabled";
+
+			phy0: ethernet-phy@0 {
+				reg = <0>;
+			};
+			phy1: ethernet-phy@1 {
+				reg = <1>;
+			};
+			phy2: ethernet-phy@2 {
+				reg = <2>;
+			};
+			phy3: ethernet-phy@3 {
+				reg = <3>;
+			};
+		};
 	};
 };
diff --git a/arch/mips/boot/dts/mscc/ocelot_pcb123.dts b/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
index 29d6414f8886..4ccd65379059 100644
--- a/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
+++ b/arch/mips/boot/dts/mscc/ocelot_pcb123.dts
@@ -25,3 +25,23 @@
 &uart2 {
 	status = "okay";
 };
+
+&mdio0 {
+	status = "okay";
+};
+
+&port0 {
+	phy-handle = <&phy0>;
+};
+
+&port1 {
+	phy-handle = <&phy1>;
+};
+
+&port2 {
+	phy-handle = <&phy2>;
+};
+
+&port3 {
+	phy-handle = <&phy3>;
+};
diff --git a/arch/mips/boot/dts/mti/Makefile b/arch/mips/boot/dts/mti/Makefile
index 3508720cb6d9..b5f7426998b1 100644
--- a/arch/mips/boot/dts/mti/Makefile
+++ b/arch/mips/boot/dts/mti/Makefile
@@ -2,4 +2,4 @@
 dtb-$(CONFIG_MIPS_MALTA)	+= malta.dtb
 dtb-$(CONFIG_LEGACY_BOARD_SEAD3)	+= sead3.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/netlogic/Makefile b/arch/mips/boot/dts/netlogic/Makefile
index d630b27950f0..45af4224494f 100644
--- a/arch/mips/boot/dts/netlogic/Makefile
+++ b/arch/mips/boot/dts/netlogic/Makefile
@@ -5,4 +5,4 @@ dtb-$(CONFIG_DT_XLP_FVP)	+= xlp_fvp.dtb
 dtb-$(CONFIG_DT_XLP_GVP)	+= xlp_gvp.dtb
 dtb-$(CONFIG_DT_XLP_RVP)	+= xlp_rvp.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/pic32/Makefile b/arch/mips/boot/dts/pic32/Makefile
index ba9bcef8fde9..fb57f36324db 100644
--- a/arch/mips/boot/dts/pic32/Makefile
+++ b/arch/mips/boot/dts/pic32/Makefile
@@ -4,4 +4,4 @@ dtb-$(CONFIG_DTB_PIC32_MZDA_SK)		+= pic32mzda_sk.dtb
 dtb-$(CONFIG_DTB_PIC32_NONE)		+= \
 					pic32mzda_sk.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/boot/dts/ralink/Makefile b/arch/mips/boot/dts/ralink/Makefile
index 94bee5b38b53..6c26dfa0a903 100644
--- a/arch/mips/boot/dts/ralink/Makefile
+++ b/arch/mips/boot/dts/ralink/Makefile
@@ -6,4 +6,4 @@ dtb-$(CONFIG_DTB_MT7620A_EVAL)	+= mt7620a_eval.dtb
 dtb-$(CONFIG_DTB_OMEGA2P)	+= omega2p.dtb
 dtb-$(CONFIG_DTB_VOCORE2)	+= vocore2.dtb
 
-obj-y				+= $(patsubst %.dtb, %.dtb.o, $(dtb-y))
+obj-$(CONFIG_BUILTIN_DTB)	+= $(addsuffix .o, $(dtb-y))
diff --git a/arch/mips/configs/qi_lb60_defconfig b/arch/mips/configs/qi_lb60_defconfig
index 3b02ff9a7c64..d8b7211a7b0f 100644
--- a/arch/mips/configs/qi_lb60_defconfig
+++ b/arch/mips/configs/qi_lb60_defconfig
@@ -72,6 +72,8 @@ CONFIG_POWER_SUPPLY=y
 CONFIG_BATTERY_JZ4740=y
 CONFIG_CHARGER_GPIO=y
 # CONFIG_HWMON is not set
+CONFIG_WATCHDOG=y
+CONFIG_JZ4740_WDT=y
 CONFIG_MFD_JZ4740_ADC=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
diff --git a/arch/mips/dec/time.c b/arch/mips/dec/time.c
index a2a150e4fbc2..c38686f89a18 100644
--- a/arch/mips/dec/time.c
+++ b/arch/mips/dec/time.c
@@ -19,7 +19,7 @@
 #include <asm/dec/ioasic.h>
 #include <asm/dec/machtype.h>
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
 	unsigned int year, mon, day, hour, min, sec, real_year;
 	unsigned long flags;
@@ -54,19 +54,20 @@ void read_persistent_clock(struct timespec *ts)
 
 	year += real_year - 72 + 2000;
 
-	ts->tv_sec = mktime(year, mon, day, hour, min, sec);
+	ts->tv_sec = mktime64(year, mon, day, hour, min, sec);
 	ts->tv_nsec = 0;
 }
 
 /*
- * In order to set the CMOS clock precisely, rtc_mips_set_mmss has to
+ * In order to set the CMOS clock precisely, update_persistent_clock64 has to
  * be called 500 ms after the second nowtime has started, because when
  * nowtime is written into the registers of the CMOS clock, it will
  * jump to the next second precisely 500 ms later.  Check the Dallas
  * DS1287 data sheet for details.
  */
-int rtc_mips_set_mmss(unsigned long nowtime)
+int update_persistent_clock64(struct timespec64 now)
 {
+	time64_t nowtime = now.tv_sec;
 	int retval = 0;
 	int real_seconds, real_minutes, cmos_minutes;
 	unsigned char save_control, save_freq_select;
@@ -91,8 +92,7 @@ int rtc_mips_set_mmss(unsigned long nowtime)
 	 * messing with unknown time zones but requires your
 	 * RTC not to be off by more than 15 minutes
 	 */
-	real_seconds = nowtime % 60;
-	real_minutes = nowtime / 60;
+	real_minutes = div_s64_rem(nowtime, 60, &real_seconds);
 	if (((abs(real_minutes - cmos_minutes) + 15) / 30) & 1)
 		real_minutes += 30;	/* correct for half hour time zone */
 	real_minutes %= 60;
diff --git a/arch/mips/include/asm/cpu-features.h b/arch/mips/include/asm/cpu-features.h
index 5f74590e0bea..9cdb4e4ce258 100644
--- a/arch/mips/include/asm/cpu-features.h
+++ b/arch/mips/include/asm/cpu-features.h
@@ -535,6 +535,13 @@
 # define cpu_has_shared_ftlb_entries 0
 #endif
 
+#ifdef CONFIG_MIPS_MT_SMP
+# define cpu_has_mipsmt_pertccounters \
+	(cpu_data[0].options & MIPS_CPU_MT_PER_TC_PERF_COUNTERS)
+#else
+# define cpu_has_mipsmt_pertccounters 0
+#endif /* CONFIG_MIPS_MT_SMP */
+
 /*
  * Guest capabilities
  */
diff --git a/arch/mips/include/asm/cpu.h b/arch/mips/include/asm/cpu.h
index d39324c4adf1..5b9d02ef4f60 100644
--- a/arch/mips/include/asm/cpu.h
+++ b/arch/mips/include/asm/cpu.h
@@ -418,6 +418,8 @@ enum cpu_type_enum {
 				MBIT_ULL(54)	/* CPU shares FTLB RAM with another */
 #define MIPS_CPU_SHARED_FTLB_ENTRIES \
 				MBIT_ULL(55)	/* CPU shares FTLB entries with another */
+#define MIPS_CPU_MT_PER_TC_PERF_COUNTERS \
+				MBIT_ULL(56)	/* CPU has perf counters implemented per TC (MIPSMT ASE) */
 
 /*
  * CPU ASE encodings
diff --git a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
index cbf9da7f2f94..0ef8893e07f8 100644
--- a/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
+++ b/arch/mips/include/asm/mach-bcm47xx/bcm47xx_board.h
@@ -110,6 +110,7 @@ enum bcm47xx_board {
 	BCM47XX_BOARD_NETGEAR_WNDR4000,
 	BCM47XX_BOARD_NETGEAR_WNDR4500V1,
 	BCM47XX_BOARD_NETGEAR_WNDR4500V2,
+	BCM47XX_BOARD_NETGEAR_WNR1000_V3,
 	BCM47XX_BOARD_NETGEAR_WNR2000,
 	BCM47XX_BOARD_NETGEAR_WNR3500L,
 	BCM47XX_BOARD_NETGEAR_WNR3500U,
diff --git a/arch/mips/include/asm/mach-jz4740/platform.h b/arch/mips/include/asm/mach-jz4740/platform.h
index 3645974b7f65..c0c932ac72a7 100644
--- a/arch/mips/include/asm/mach-jz4740/platform.h
+++ b/arch/mips/include/asm/mach-jz4740/platform.h
@@ -29,7 +29,6 @@ extern struct platform_device jz4740_i2s_device;
 extern struct platform_device jz4740_pcm_device;
 extern struct platform_device jz4740_codec_device;
 extern struct platform_device jz4740_adc_device;
-extern struct platform_device jz4740_wdt_device;
 extern struct platform_device jz4740_pwm_device;
 extern struct platform_device jz4740_dma_device;
 
diff --git a/arch/mips/include/asm/mc146818-time.h b/arch/mips/include/asm/mc146818-time.h
index 9e1ad26abdc0..cbf5cec345f1 100644
--- a/arch/mips/include/asm/mc146818-time.h
+++ b/arch/mips/include/asm/mc146818-time.h
@@ -86,7 +86,7 @@ static inline int mc146818_set_rtc_mmss(unsigned long nowtime)
 	return retval;
 }
 
-static inline unsigned long mc146818_get_cmos_time(void)
+static inline time64_t mc146818_get_cmos_time(void)
 {
 	unsigned int year, mon, day, hour, min, sec;
 	unsigned long flags;
@@ -113,7 +113,7 @@ static inline unsigned long mc146818_get_cmos_time(void)
 	spin_unlock_irqrestore(&rtc_lock, flags);
 	year = mc146818_decode_year(year);
 
-	return mktime(year, mon, day, hour, min, sec);
+	return mktime64(year, mon, day, hour, min, sec);
 }
 
 #endif /* __ASM_MC146818_TIME_H */
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index f65859784a4c..ae461d91cd1f 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -685,6 +685,11 @@
 #define MIPS_CONF7_IAR		(_ULCAST_(1) << 10)
 #define MIPS_CONF7_AR		(_ULCAST_(1) << 16)
 
+/* Config7 Bits specific to MIPS Technologies. */
+
+/* Performance counters implemented Per TC */
+#define MTI_CONF7_PTC		(_ULCAST_(1) << 19)
+
 /* WatchLo* register definitions */
 #define MIPS_WATCHLO_IRW	(_ULCAST_(0x7) << 0)
 
diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h
index 17d4cd20f18c..b85ec64ee7e9 100644
--- a/arch/mips/include/asm/time.h
+++ b/arch/mips/include/asm/time.h
@@ -22,15 +22,6 @@
 extern spinlock_t rtc_lock;
 
 /*
- * RTC ops.  By default, they point to weak no-op RTC functions.
- *	rtc_mips_set_time - reverse the above translation and set time to RTC.
- *	rtc_mips_set_mmss - similar to rtc_set_time, but only min and sec need
- *			to be set.  Used by RTC sync-up.
- */
-extern int rtc_mips_set_time(unsigned long);
-extern int rtc_mips_set_mmss(unsigned long);
-
-/*
  * board specific routines required by time_init().
  */
 extern void plat_time_init(void);
diff --git a/arch/mips/jz4740/platform.c b/arch/mips/jz4740/platform.c
index 5b7cdd67a9d9..cbc5f8e87230 100644
--- a/arch/mips/jz4740/platform.c
+++ b/arch/mips/jz4740/platform.c
@@ -233,22 +233,6 @@ struct platform_device jz4740_adc_device = {
 	.resource	= jz4740_adc_resources,
 };
 
-/* Watchdog */
-static struct resource jz4740_wdt_resources[] = {
-	{
-		.start = JZ4740_WDT_BASE_ADDR,
-		.end   = JZ4740_WDT_BASE_ADDR + 0x10 - 1,
-		.flags = IORESOURCE_MEM,
-	},
-};
-
-struct platform_device jz4740_wdt_device = {
-	.name	       = "jz4740-wdt",
-	.id	       = -1,
-	.num_resources = ARRAY_SIZE(jz4740_wdt_resources),
-	.resource      = jz4740_wdt_resources,
-};
-
 /* PWM */
 struct platform_device jz4740_pwm_device = {
 	.name = "jz4740-pwm",
diff --git a/arch/mips/jz4740/reset.c b/arch/mips/jz4740/reset.c
index 67780c4b6573..5bf0cf44b55f 100644
--- a/arch/mips/jz4740/reset.c
+++ b/arch/mips/jz4740/reset.c
@@ -12,18 +12,9 @@
  *
  */
 
-#include <linux/clk.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/pm.h>
-
 #include <asm/reboot.h>
 
-#include <asm/mach-jz4740/base.h>
-#include <asm/mach-jz4740/timer.h>
-
 #include "reset.h"
-#include "clock.h"
 
 static void jz4740_halt(void)
 {
@@ -36,29 +27,7 @@ static void jz4740_halt(void)
 	}
 }
 
-#define JZ_REG_WDT_DATA 0x00
-#define JZ_REG_WDT_COUNTER_ENABLE 0x04
-#define JZ_REG_WDT_COUNTER 0x08
-#define JZ_REG_WDT_CTRL 0x0c
-
-static void jz4740_restart(char *command)
-{
-	void __iomem *wdt_base = ioremap(JZ4740_WDT_BASE_ADDR, 0x0f);
-
-	jz4740_timer_enable_watchdog();
-
-	writeb(0, wdt_base + JZ_REG_WDT_COUNTER_ENABLE);
-
-	writew(0, wdt_base + JZ_REG_WDT_COUNTER);
-	writew(0, wdt_base + JZ_REG_WDT_DATA);
-	writew(BIT(2), wdt_base + JZ_REG_WDT_CTRL);
-
-	writeb(1, wdt_base + JZ_REG_WDT_COUNTER_ENABLE);
-	jz4740_halt();
-}
-
 void jz4740_reset_init(void)
 {
-	_machine_restart = jz4740_restart;
 	_machine_halt = jz4740_halt;
 }
diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c
index 6b07b739f914..b2509c19cfb5 100644
--- a/arch/mips/kernel/cpu-probe.c
+++ b/arch/mips/kernel/cpu-probe.c
@@ -414,6 +414,14 @@ static int __init ftlb_disable(char *s)
 
 __setup("noftlb", ftlb_disable);
 
+/*
+ * Check if the CPU has per tc perf counters
+ */
+static inline void cpu_set_mt_per_tc_perf(struct cpuinfo_mips *c)
+{
+	if (read_c0_config7() & MTI_CONF7_PTC)
+		c->options |= MIPS_CPU_MT_PER_TC_PERF_COUNTERS;
+}
 
 static inline void check_errata(void)
 {
@@ -1572,6 +1580,7 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
 		c->cputype = CPU_34K;
 		c->writecombine = _CACHE_UNCACHED;
 		__cpu_name[cpu] = "MIPS 34Kc";
+		cpu_set_mt_per_tc_perf(c);
 		break;
 	case PRID_IMP_74K:
 		c->cputype = CPU_74K;
@@ -1592,6 +1601,7 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
 		c->cputype = CPU_1004K;
 		c->writecombine = _CACHE_UNCACHED;
 		__cpu_name[cpu] = "MIPS 1004Kc";
+		cpu_set_mt_per_tc_perf(c);
 		break;
 	case PRID_IMP_1074K:
 		c->cputype = CPU_1074K;
@@ -1601,10 +1611,12 @@ static inline void cpu_probe_mips(struct cpuinfo_mips *c, unsigned int cpu)
 	case PRID_IMP_INTERAPTIV_UP:
 		c->cputype = CPU_INTERAPTIV;
 		__cpu_name[cpu] = "MIPS interAptiv";
+		cpu_set_mt_per_tc_perf(c);
 		break;
 	case PRID_IMP_INTERAPTIV_MP:
 		c->cputype = CPU_INTERAPTIV;
 		__cpu_name[cpu] = "MIPS interAptiv (multi)";
+		cpu_set_mt_per_tc_perf(c);
 		break;
 	case PRID_IMP_PROAPTIV_UP:
 		c->cputype = CPU_PROAPTIV;
diff --git a/arch/mips/kernel/perf_event_mipsxx.c b/arch/mips/kernel/perf_event_mipsxx.c
index ee73550f0b9a..413863508f6f 100644
--- a/arch/mips/kernel/perf_event_mipsxx.c
+++ b/arch/mips/kernel/perf_event_mipsxx.c
@@ -129,20 +129,14 @@ static struct mips_pmu mipspmu;
 
 
 #ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
-static int cpu_has_mipsmt_pertccounters;
-
 static DEFINE_RWLOCK(pmuint_rwlock);
 
 #if defined(CONFIG_CPU_BMIPS5000)
 #define vpe_id()	(cpu_has_mipsmt_pertccounters ? \
 			 0 : (smp_processor_id() & MIPS_CPUID_TO_COUNTER_MASK))
 #else
-/*
- * FIXME: For VSMP, vpe_id() is redefined for Perf-events, because
- * cpu_data[cpuid].vpe_id reports 0 for _both_ CPUs.
- */
 #define vpe_id()	(cpu_has_mipsmt_pertccounters ? \
-			 0 : smp_processor_id())
+			 0 : cpu_vpe_id(&current_cpu_data))
 #endif
 
 /* Copied from op_model_mipsxx.c */
@@ -329,7 +323,11 @@ static int mipsxx_pmu_alloc_counter(struct cpu_hw_events *cpuc,
 
 static void mipsxx_pmu_enable_event(struct hw_perf_event *evt, int idx)
 {
+	struct perf_event *event = container_of(evt, struct perf_event, hw);
 	struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events);
+#ifdef CONFIG_MIPS_MT_SMP
+	unsigned int range = evt->event_base >> 24;
+#endif /* CONFIG_MIPS_MT_SMP */
 
 	WARN_ON(idx < 0 || idx >= mipspmu.num_counters);
 
@@ -337,11 +335,37 @@ static void mipsxx_pmu_enable_event(struct hw_perf_event *evt, int idx)
 		(evt->config_base & M_PERFCTL_CONFIG_MASK) |
 		/* Make sure interrupt enabled. */
 		MIPS_PERFCTRL_IE;
-	if (IS_ENABLED(CONFIG_CPU_BMIPS5000))
+
+#ifdef CONFIG_CPU_BMIPS5000
+	{
 		/* enable the counter for the calling thread */
 		cpuc->saved_ctrl[idx] |=
 			(1 << (12 + vpe_id())) | BRCM_PERFCTRL_TC;
+	}
+#else
+#ifdef CONFIG_MIPS_MT_SMP
+	if (range > V) {
+		/* The counter is processor wide. Set it up to count all TCs. */
+		pr_debug("Enabling perf counter for all TCs\n");
+		cpuc->saved_ctrl[idx] |= M_TC_EN_ALL;
+	} else
+#endif /* CONFIG_MIPS_MT_SMP */
+	{
+		unsigned int cpu, ctrl;
+
+		/*
+		 * Set up the counter for a particular CPU when event->cpu is
+		 * a valid CPU number. Otherwise set up the counter for the CPU
+		 * scheduling this thread.
+		 */
+		cpu = (event->cpu >= 0) ? event->cpu : smp_processor_id();
 
+		ctrl = M_PERFCTL_VPEID(cpu_vpe_id(&cpu_data[cpu]));
+		ctrl |= M_TC_EN_VPE;
+		cpuc->saved_ctrl[idx] |= ctrl;
+		pr_debug("Enabling perf counter for CPU%d\n", cpu);
+	}
+#endif /* CONFIG_CPU_BMIPS5000 */
 	/*
 	 * We do not actually let the counter run. Leave it until start().
 	 */
@@ -655,13 +679,14 @@ static unsigned int mipspmu_perf_event_encode(const struct mips_perf_event *pev)
  * event_id.
  */
 #ifdef CONFIG_MIPS_MT_SMP
-	return ((unsigned int)pev->range << 24) |
-		(pev->cntr_mask & 0xffff00) |
-		(pev->event_id & 0xff);
-#else
-	return (pev->cntr_mask & 0xffff00) |
-		(pev->event_id & 0xff);
-#endif
+	if (num_possible_cpus() > 1)
+		return ((unsigned int)pev->range << 24) |
+			(pev->cntr_mask & 0xffff00) |
+			(pev->event_id & 0xff);
+	else
+#endif /* CONFIG_MIPS_MT_SMP */
+		return ((pev->cntr_mask & 0xffff00) |
+			(pev->event_id & 0xff));
 }
 
 static const struct mips_perf_event *mipspmu_map_general_event(int idx)
@@ -1265,37 +1290,6 @@ static const struct mips_perf_event xlp_cache_map
 },
 };
 
-#ifdef CONFIG_MIPS_MT_SMP
-static void check_and_calc_range(struct perf_event *event,
-				 const struct mips_perf_event *pev)
-{
-	struct hw_perf_event *hwc = &event->hw;
-
-	if (event->cpu >= 0) {
-		if (pev->range > V) {
-			/*
-			 * The user selected an event that is processor
-			 * wide, while expecting it to be VPE wide.
-			 */
-			hwc->config_base |= M_TC_EN_ALL;
-		} else {
-			/*
-			 * FIXME: cpu_data[event->cpu].vpe_id reports 0
-			 * for both CPUs.
-			 */
-			hwc->config_base |= M_PERFCTL_VPEID(event->cpu);
-			hwc->config_base |= M_TC_EN_VPE;
-		}
-	} else
-		hwc->config_base |= M_TC_EN_ALL;
-}
-#else
-static void check_and_calc_range(struct perf_event *event,
-				 const struct mips_perf_event *pev)
-{
-}
-#endif
-
 static int __hw_perf_event_init(struct perf_event *event)
 {
 	struct perf_event_attr *attr = &event->attr;
@@ -1331,10 +1325,6 @@ static int __hw_perf_event_init(struct perf_event *event)
 	 */
 	hwc->config_base = MIPS_PERFCTRL_IE;
 
-	/* Calculate range bits and validate it. */
-	if (num_possible_cpus() > 1)
-		check_and_calc_range(event, pev);
-
 	hwc->event_base = mipspmu_perf_event_encode(pev);
 	if (PERF_TYPE_RAW == event->attr.type)
 		mutex_unlock(&raw_event_mutex);
@@ -1723,7 +1713,6 @@ init_hw_perf_events(void)
 	}
 
 #ifdef CONFIG_MIPS_PERF_SHARED_TC_COUNTERS
-	cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19);
 	if (!cpu_has_mipsmt_pertccounters)
 		counters = counters_total_to_per_cpu(counters);
 #endif
diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
index 0c0c23c9c9f5..9f6c3f2aa2e2 100644
--- a/arch/mips/kernel/ptrace.c
+++ b/arch/mips/kernel/ptrace.c
@@ -811,7 +811,7 @@ long arch_ptrace(struct task_struct *child, long request,
 				/*
 				 * The odd registers are actually the high
 				 * order bits of the values stored in the even
-				 * registers - unless we're using r2k_switch.S.
+				 * registers.
 				 */
 				tmp = get_fpr32(&fregs[(addr & ~1) - FPR_BASE],
 						addr & 1);
@@ -906,7 +906,7 @@ long arch_ptrace(struct task_struct *child, long request,
 				/*
 				 * The odd registers are actually the high
 				 * order bits of the values stored in the even
-				 * registers - unless we're using r2k_switch.S.
+				 * registers.
 				 */
 				set_fpr32(&fregs[(addr & ~1) - FPR_BASE],
 					  addr & 1, data);
diff --git a/arch/mips/kernel/ptrace32.c b/arch/mips/kernel/ptrace32.c
index f30c381d3e1c..7edc629304c8 100644
--- a/arch/mips/kernel/ptrace32.c
+++ b/arch/mips/kernel/ptrace32.c
@@ -103,7 +103,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 				/*
 				 * The odd registers are actually the high
 				 * order bits of the values stored in the even
-				 * registers - unless we're using r2k_switch.S.
+				 * registers.
 				 */
 				tmp = get_fpr32(&fregs[(addr & ~1) - FPR_BASE],
 						addr & 1);
@@ -216,7 +216,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
 				/*
 				 * The odd registers are actually the high
 				 * order bits of the values stored in the even
-				 * registers - unless we're using r2k_switch.S.
+				 * registers.
 				 */
 				set_fpr32(&fregs[(addr & ~1) - FPR_BASE],
 					  addr & 1, data);
diff --git a/arch/mips/kernel/time.c b/arch/mips/kernel/time.c
index a6ebc8135112..bfe02ded25d1 100644
--- a/arch/mips/kernel/time.c
+++ b/arch/mips/kernel/time.c
@@ -34,21 +34,6 @@
 DEFINE_SPINLOCK(rtc_lock);
 EXPORT_SYMBOL(rtc_lock);
 
-int __weak rtc_mips_set_time(unsigned long sec)
-{
-	return -ENODEV;
-}
-
-int __weak rtc_mips_set_mmss(unsigned long nowtime)
-{
-	return rtc_mips_set_time(nowtime);
-}
-
-int update_persistent_clock(struct timespec now)
-{
-	return rtc_mips_set_mmss(now.tv_sec);
-}
-
 static int null_perf_irq(void)
 {
 	return 0;
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 544ea21bfef9..0bef238d2c0c 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -872,7 +872,7 @@ static ssize_t vpe_write(struct file *file, const char __user *buffer,
 		return -ENODEV;
 
 	if ((count + v->len) > v->plen) {
-		pr_warn("VPE loader: elf size too big. Perhaps strip uneeded symbols\n");
+		pr_warn("VPE loader: elf size too big. Perhaps strip unneeded symbols\n");
 		return -ENOMEM;
 	}
 
diff --git a/arch/mips/lasat/ds1603.c b/arch/mips/lasat/ds1603.c
index 8bd5cf820eed..e6ce39fefa78 100644
--- a/arch/mips/lasat/ds1603.c
+++ b/arch/mips/lasat/ds1603.c
@@ -136,7 +136,7 @@ static void rtc_end_op(void)
 	lasat_ndelay(1000);
 }
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
 	unsigned long word;
 	unsigned long flags;
@@ -152,14 +152,19 @@ void read_persistent_clock(struct timespec *ts)
 	ts->tv_nsec = 0;
 }
 
-int rtc_mips_set_mmss(unsigned long time)
+int update_persistent_clock64(struct timespec64 now)
 {
+	time64_t time = now.tv_sec;
 	unsigned long flags;
 
 	spin_lock_irqsave(&rtc_lock, flags);
 	rtc_init_op();
 	rtc_write_byte(SET_TIME_CMD);
-	rtc_write_word(time);
+	/*
+	 * Due to the hardware limitation, we cast to 'unsigned long' type,
+	 * so it will overflow in year 2106 on 32-bit machine.
+	 */
+	rtc_write_word((unsigned long)time);
 	rtc_end_op();
 	spin_unlock_irqrestore(&rtc_lock, flags);
 
diff --git a/arch/mips/lasat/sysctl.c b/arch/mips/lasat/sysctl.c
index 6f7422400f32..ead07c243c6a 100644
--- a/arch/mips/lasat/sysctl.c
+++ b/arch/mips/lasat/sysctl.c
@@ -73,8 +73,16 @@ int proc_dolasatrtc(struct ctl_table *table, int write,
 	if (r)
 		return r;
 
-	if (write)
-		rtc_mips_set_mmss(rtctmp);
+	if (write) {
+		/*
+		 * Due to the RTC hardware limitation, we can not actually
+		 * use the full 64-bit range here.
+		 */
+		ts.tv_sec = rtctmp;
+		ts.tv_nsec = 0;
+
+		update_persistent_clock64(ts);
+	}
 
 	return 0;
 }
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index e84e12655fa8..6537e022ef62 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -16,5 +16,4 @@ obj-$(CONFIG_CPU_R3000)		+= r3k_dump_tlb.o
 obj-$(CONFIG_CPU_TX39XX)	+= r3k_dump_tlb.o
 
 # libgcc-style stuff needed in the kernel
-obj-y += ashldi3.o ashrdi3.o bswapsi.o bswapdi.o cmpdi2.o lshrdi3.o multi3.o \
-	 ucmpdi2.o
+obj-y += bswapsi.o bswapdi.o multi3.o
diff --git a/arch/mips/lib/ashldi3.c b/arch/mips/lib/ashldi3.c
deleted file mode 100644
index 24cd6903e797..000000000000
--- a/arch/mips/lib/ashldi3.c
+++ /dev/null
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __ashldi3(long long u, word_type b)
-{
-	DWunion uu, w;
-	word_type bm;
-
-	if (b == 0)
-		return u;
-
-	uu.ll = u;
-	bm = 32 - b;
-
-	if (bm <= 0) {
-		w.s.low = 0;
-		w.s.high = (unsigned int) uu.s.low << -bm;
-	} else {
-		const unsigned int carries = (unsigned int) uu.s.low >> bm;
-
-		w.s.low = (unsigned int) uu.s.low << b;
-		w.s.high = ((unsigned int) uu.s.high << b) | carries;
-	}
-
-	return w.ll;
-}
-
-EXPORT_SYMBOL(__ashldi3);
diff --git a/arch/mips/lib/ashrdi3.c b/arch/mips/lib/ashrdi3.c
deleted file mode 100644
index 23f5295af51e..000000000000
--- a/arch/mips/lib/ashrdi3.c
+++ /dev/null
@@ -1,32 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __ashrdi3(long long u, word_type b)
-{
-	DWunion uu, w;
-	word_type bm;
-
-	if (b == 0)
-		return u;
-
-	uu.ll = u;
-	bm = 32 - b;
-
-	if (bm <= 0) {
-		/* w.s.high = 1..1 or 0..0 */
-		w.s.high =
-		    uu.s.high >> 31;
-		w.s.low = uu.s.high >> -bm;
-	} else {
-		const unsigned int carries = (unsigned int) uu.s.high << bm;
-
-		w.s.high = uu.s.high >> b;
-		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
-	}
-
-	return w.ll;
-}
-
-EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/mips/lib/cmpdi2.c b/arch/mips/lib/cmpdi2.c
deleted file mode 100644
index 93cfc785927d..000000000000
--- a/arch/mips/lib/cmpdi2.c
+++ /dev/null
@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-word_type notrace __cmpdi2(long long a, long long b)
-{
-	const DWunion au = {
-		.ll = a
-	};
-	const DWunion bu = {
-		.ll = b
-	};
-
-	if (au.s.high < bu.s.high)
-		return 0;
-	else if (au.s.high > bu.s.high)
-		return 2;
-
-	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
-		return 0;
-	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
-		return 2;
-
-	return 1;
-}
-
-EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/mips/lib/lshrdi3.c b/arch/mips/lib/lshrdi3.c
deleted file mode 100644
index 914b971aca3b..000000000000
--- a/arch/mips/lib/lshrdi3.c
+++ /dev/null
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __lshrdi3(long long u, word_type b)
-{
-	DWunion uu, w;
-	word_type bm;
-
-	if (b == 0)
-		return u;
-
-	uu.ll = u;
-	bm = 32 - b;
-
-	if (bm <= 0) {
-		w.s.high = 0;
-		w.s.low = (unsigned int) uu.s.high >> -bm;
-	} else {
-		const unsigned int carries = (unsigned int) uu.s.high << bm;
-
-		w.s.high = (unsigned int) uu.s.high >> b;
-		w.s.low = ((unsigned int) uu.s.low >> b) | carries;
-	}
-
-	return w.ll;
-}
-
-EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S
index f7327979a8f8..1cc306520a55 100644
--- a/arch/mips/lib/memset.S
+++ b/arch/mips/lib/memset.S
@@ -95,7 +95,7 @@
 
 	sltiu		t0, a2, STORSIZE	/* very small region? */
 	bnez		t0, .Lsmall_memset\@
-	andi		t0, a0, STORMASK	/* aligned? */
+	 andi		t0, a0, STORMASK	/* aligned? */
 
 #ifdef CONFIG_CPU_MICROMIPS
 	move		t8, a1			/* used by 'swp' instruction */
@@ -103,12 +103,12 @@
 #endif
 #ifndef CONFIG_CPU_DADDI_WORKAROUNDS
 	beqz		t0, 1f
-	PTR_SUBU	t0, STORSIZE		/* alignment in bytes */
+	 PTR_SUBU	t0, STORSIZE		/* alignment in bytes */
 #else
 	.set		noat
 	li		AT, STORSIZE
 	beqz		t0, 1f
-	PTR_SUBU	t0, AT			/* alignment in bytes */
+	 PTR_SUBU	t0, AT			/* alignment in bytes */
 	.set		at
 #endif
 
@@ -149,7 +149,7 @@
 1:	ori		t1, a2, 0x3f		/* # of full blocks */
 	xori		t1, 0x3f
 	beqz		t1, .Lmemset_partial\@	/* no block to fill */
-	andi		t0, a2, 0x40-STORSIZE
+	 andi		t0, a2, 0x40-STORSIZE
 
 	PTR_ADDU	t1, a0			/* end address */
 	.set		reorder
@@ -174,7 +174,7 @@
 	.set		at
 #endif
 	jr		t1
-	PTR_ADDU	a0, t0			/* dest ptr */
+	 PTR_ADDU	a0, t0			/* dest ptr */
 
 	.set		push
 	.set		noreorder
@@ -186,7 +186,7 @@
 
 	beqz		a2, 1f
 #ifndef CONFIG_CPU_MIPSR6
-	PTR_ADDU	a0, a2			/* What's left */
+	 PTR_ADDU	a0, a2			/* What's left */
 	R10KCBARRIER(0(ra))
 #ifdef __MIPSEB__
 	EX(LONG_S_R, a1, -1(a0), .Llast_fixup\@)
@@ -194,7 +194,7 @@
 	EX(LONG_S_L, a1, -1(a0), .Llast_fixup\@)
 #endif
 #else
-	PTR_SUBU	t0, $0, a2
+	 PTR_SUBU	t0, $0, a2
 	PTR_ADDIU	t0, 1
 	STORE_BYTE(0)
 	STORE_BYTE(1)
@@ -210,11 +210,11 @@
 0:
 #endif
 1:	jr		ra
-	move		a2, zero
+	 move		a2, zero
 
 .Lsmall_memset\@:
 	beqz		a2, 2f
-	PTR_ADDU	t1, a0, a2
+	 PTR_ADDU	t1, a0, a2
 
 1:	PTR_ADDIU	a0, 1			/* fill bytewise */
 	R10KCBARRIER(0(ra))
@@ -222,7 +222,7 @@
 	 EX(sb, a1, -1(a0), .Lsmall_fixup\@)
 
 2:	jr		ra			/* done */
-	move		a2, zero
+	 move		a2, zero
 	.if __memset == 1
 	END(memset)
 	.set __memset, 0
@@ -238,7 +238,7 @@
 
 .Lfirst_fixup\@:
 	jr	ra
-	nop
+	 nop
 
 .Lfwd_fixup\@:
 	PTR_L		t0, TI_TASK($28)
@@ -246,7 +246,7 @@
 	LONG_L		t0, THREAD_BUADDR(t0)
 	LONG_ADDU	a2, t1
 	jr		ra
-	LONG_SUBU	a2, t0
+	 LONG_SUBU	a2, t0
 
 .Lpartial_fixup\@:
 	PTR_L		t0, TI_TASK($28)
@@ -254,7 +254,7 @@
 	LONG_L		t0, THREAD_BUADDR(t0)
 	LONG_ADDU	a2, a0
 	jr		ra
-	LONG_SUBU	a2, t0
+	 LONG_SUBU	a2, t0
 
 .Llast_fixup\@:
 	jr		ra
@@ -278,7 +278,7 @@
 LEAF(memset)
 EXPORT_SYMBOL(memset)
 	beqz		a1, 1f
-	move		v0, a0			/* result */
+	 move		v0, a0			/* result */
 
 	andi		a1, 0xff		/* spread fillword */
 	LONG_SLL		t1, a1, 8
diff --git a/arch/mips/lib/ucmpdi2.c b/arch/mips/lib/ucmpdi2.c
deleted file mode 100644
index c31c78ca4175..000000000000
--- a/arch/mips/lib/ucmpdi2.c
+++ /dev/null
@@ -1,22 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-word_type notrace __ucmpdi2(unsigned long long a, unsigned long long b)
-{
-	const DWunion au = {.ll = a};
-	const DWunion bu = {.ll = b};
-
-	if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
-		return 0;
-	else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
-		return 2;
-	if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
-		return 0;
-	else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
-		return 2;
-	return 1;
-}
-
-EXPORT_SYMBOL(__ucmpdi2);
diff --git a/arch/mips/loongson64/common/time.c b/arch/mips/loongson64/common/time.c
index e1a5382ad47e..0ba53c55ff33 100644
--- a/arch/mips/loongson64/common/time.c
+++ b/arch/mips/loongson64/common/time.c
@@ -29,7 +29,7 @@ void __init plat_time_init(void)
 #endif
 }
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
 	ts->tv_sec = mc146818_get_cmos_time();
 	ts->tv_nsec = 0;
diff --git a/arch/mips/mm/sc-debugfs.c b/arch/mips/mm/sc-debugfs.c
index 2e2132d3f5c7..2a116084216f 100644
--- a/arch/mips/mm/sc-debugfs.c
+++ b/arch/mips/mm/sc-debugfs.c
@@ -31,17 +31,10 @@ static ssize_t sc_prefetch_write(struct file *file,
 				 const char __user *user_buf,
 				 size_t count, loff_t *ppos)
 {
-	char buf[32];
-	ssize_t buf_size;
 	bool enabled;
 	int err;
 
-	buf_size = min(count, sizeof(buf) - 1);
-	if (copy_from_user(buf, user_buf, buf_size))
-		return -EFAULT;
-
-	buf[buf_size] = '\0';
-	err = strtobool(buf, &enabled);
+	err = kstrtobool_from_user(user_buf, count, &enabled);
 	if (err)
 		return err;
 
diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c
index 66c866740ff2..d22b7edc3886 100644
--- a/arch/mips/mti-malta/malta-time.c
+++ b/arch/mips/mti-malta/malta-time.c
@@ -134,7 +134,7 @@ static void __init estimate_frequencies(void)
 	}
 }
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
 	ts->tv_sec = mc146818_get_cmos_time();
 	ts->tv_nsec = 0;
diff --git a/arch/mips/oprofile/op_model_mipsxx.c b/arch/mips/oprofile/op_model_mipsxx.c
index c3e4c18ef8d4..7c04b17f4a48 100644
--- a/arch/mips/oprofile/op_model_mipsxx.c
+++ b/arch/mips/oprofile/op_model_mipsxx.c
@@ -36,7 +36,6 @@ static int perfcount_irq;
 #endif
 
 #ifdef CONFIG_MIPS_MT_SMP
-static int cpu_has_mipsmt_pertccounters;
 #define WHAT		(MIPS_PERFCTRL_MT_EN_VPE | \
 			 M_PERFCTL_VPEID(cpu_vpe_id(&current_cpu_data)))
 #define vpe_id()	(cpu_has_mipsmt_pertccounters ? \
@@ -326,7 +325,6 @@ static int __init mipsxx_init(void)
 	}
 
 #ifdef CONFIG_MIPS_MT_SMP
-	cpu_has_mipsmt_pertccounters = read_c0_config7() & (1<<19);
 	if (!cpu_has_mipsmt_pertccounters)
 		counters = counters_total_to_per_cpu(counters);
 #endif
diff --git a/arch/mips/sibyte/swarm/rtc_m41t81.c b/arch/mips/sibyte/swarm/rtc_m41t81.c
index e62466445f08..4ac8ccdf56bb 100644
--- a/arch/mips/sibyte/swarm/rtc_m41t81.c
+++ b/arch/mips/sibyte/swarm/rtc_m41t81.c
@@ -141,13 +141,13 @@ static int m41t81_write(uint8_t addr, int b)
 	return 0;
 }
 
-int m41t81_set_time(unsigned long t)
+int m41t81_set_time(time64_t t)
 {
 	struct rtc_time tm;
 	unsigned long flags;
 
 	/* Note we don't care about the century */
-	rtc_time_to_tm(t, &tm);
+	rtc_time64_to_tm(t, &tm);
 
 	/*
 	 * Note the write order matters as it ensures the correctness.
@@ -188,7 +188,7 @@ int m41t81_set_time(unsigned long t)
 	return 0;
 }
 
-unsigned long m41t81_get_time(void)
+time64_t m41t81_get_time(void)
 {
 	unsigned int year, mon, day, hour, min, sec;
 	unsigned long flags;
@@ -218,7 +218,7 @@ unsigned long m41t81_get_time(void)
 
 	year += 2000;
 
-	return mktime(year, mon, day, hour, min, sec);
+	return mktime64(year, mon, day, hour, min, sec);
 }
 
 int m41t81_probe(void)
diff --git a/arch/mips/sibyte/swarm/rtc_xicor1241.c b/arch/mips/sibyte/swarm/rtc_xicor1241.c
index 50a82c495427..2dcaaa7e3bfa 100644
--- a/arch/mips/sibyte/swarm/rtc_xicor1241.c
+++ b/arch/mips/sibyte/swarm/rtc_xicor1241.c
@@ -109,13 +109,13 @@ static int xicor_write(uint8_t addr, int b)
 	}
 }
 
-int xicor_set_time(unsigned long t)
+int xicor_set_time(time64_t t)
 {
 	struct rtc_time tm;
 	int tmp;
 	unsigned long flags;
 
-	rtc_time_to_tm(t, &tm);
+	rtc_time64_to_tm(t, &tm);
 	tm.tm_year += 1900;
 
 	spin_lock_irqsave(&rtc_lock, flags);
@@ -168,7 +168,7 @@ int xicor_set_time(unsigned long t)
 	return 0;
 }
 
-unsigned long xicor_get_time(void)
+time64_t xicor_get_time(void)
 {
 	unsigned int year, mon, day, hour, min, sec, y2k;
 	unsigned long flags;
@@ -201,7 +201,7 @@ unsigned long xicor_get_time(void)
 
 	year += (y2k * 100);
 
-	return mktime(year, mon, day, hour, min, sec);
+	return mktime64(year, mon, day, hour, min, sec);
 }
 
 int xicor_probe(void)
diff --git a/arch/mips/sibyte/swarm/setup.c b/arch/mips/sibyte/swarm/setup.c
index 494fb0a475ac..152ca71cc2d7 100644
--- a/arch/mips/sibyte/swarm/setup.c
+++ b/arch/mips/sibyte/swarm/setup.c
@@ -57,12 +57,12 @@ extern void sb1250_setup(void);
 #endif
 
 extern int xicor_probe(void);
-extern int xicor_set_time(unsigned long);
-extern unsigned long xicor_get_time(void);
+extern int xicor_set_time(time64_t);
+extern time64_t xicor_get_time(void);
 
 extern int m41t81_probe(void);
-extern int m41t81_set_time(unsigned long);
-extern unsigned long m41t81_get_time(void);
+extern int m41t81_set_time(time64_t);
+extern time64_t m41t81_get_time(void);
 
 const char *get_system_type(void)
 {
@@ -87,9 +87,9 @@ enum swarm_rtc_type {
 
 enum swarm_rtc_type swarm_rtc_type;
 
-void read_persistent_clock(struct timespec *ts)
+void read_persistent_clock64(struct timespec64 *ts)
 {
-	unsigned long sec;
+	time64_t sec;
 
 	switch (swarm_rtc_type) {
 	case RTC_XICOR:
@@ -102,15 +102,17 @@ void read_persistent_clock(struct timespec *ts)
 
 	case RTC_NONE:
 	default:
-		sec = mktime(2000, 1, 1, 0, 0, 0);
+		sec = mktime64(2000, 1, 1, 0, 0, 0);
 		break;
 	}
 	ts->tv_sec = sec;
 	ts->tv_nsec = 0;
 }
 
-int rtc_mips_set_time(unsigned long sec)
+int update_persistent_clock64(struct timespec64 now)
 {
+	time64_t sec = now.tv_sec;
+
 	switch (swarm_rtc_type) {
 	case RTC_XICOR:
 		return xicor_set_time(sec);
diff --git a/arch/mips/sni/time.c b/arch/mips/sni/time.c
index 0eb7d1e8821b..dbace1f3e1a9 100644
--- a/arch/mips/sni/time.c
+++ b/arch/mips/sni/time.c
@@ -171,9 +171,3 @@ void __init plat_time_init(void)
 	}
 	setup_pit_timer();
 }
-
-void read_persistent_clock(struct timespec *ts)
-{
-	ts->tv_sec = -1;
-	ts->tv_nsec = 0;
-}
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 17f19e67993b..42e581a268e1 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -103,9 +103,9 @@ choice
 config ARCH_RV32I
 	bool "RV32I"
 	select 32BIT
-	select GENERIC_ASHLDI3
-	select GENERIC_ASHRDI3
-	select GENERIC_LSHRDI3
+	select GENERIC_LIB_ASHLDI3
+	select GENERIC_LIB_ASHRDI3
+	select GENERIC_LIB_LSHRDI3
 
 config ARCH_RV64I
 	bool "RV64I"