8 files changed, 45 insertions, 13 deletions

diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-fabric.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs-fabric.dtsi
index 854320e17b28..ccaac3371cf9 100644
--- a/arch/riscv/boot/dts/microchip/microchip-mpfs-fabric.dtsi
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-fabric.dtsi
@@ -7,7 +7,7 @@
 		reg = <0x0 0x41000000 0x0 0xF0>;
 		microchip,sync-update-mask = /bits/ 32 <0>;
 		#pwm-cells = <2>;
-		clocks = <&clkcfg CLK_FIC3>;
+		clocks = <&fabric_clk3>;
 		status = "disabled";
 	};
 
@@ -16,10 +16,22 @@
 		reg = <0x0 0x44000000 0x0 0x1000>;
 		#address-cells = <1>;
 		#size-cells = <0>;
-		clocks = <&clkcfg CLK_FIC3>;
+		clocks = <&fabric_clk3>;
 		interrupt-parent = <&plic>;
 		interrupts = <122>;
 		clock-frequency = <100000>;
 		status = "disabled";
 	};
+
+	fabric_clk3: fabric-clk3 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <62500000>;
+	};
+
+	fabric_clk1: fabric-clk1 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <125000000>;
+	};
 };
diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
index cd2fe80fa81a..3392153dd0f1 100644
--- a/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
@@ -45,7 +45,7 @@
 };
 
 &refclk {
-	clock-frequency = <600000000>;
+	clock-frequency = <125000000>;
 };
 
 &mmuart1 {
diff --git a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
index c5c9d1360de0..746c4d4e7686 100644
--- a/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
+++ b/arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi
@@ -141,7 +141,7 @@
 		};
 	};
 
-	refclk: msspllclk {
+	refclk: mssrefclk {
 		compatible = "fixed-clock";
 		#clock-cells = <0>;
 	};
@@ -190,7 +190,7 @@
 
 		clkcfg: clkcfg@20002000 {
 			compatible = "microchip,mpfs-clkcfg";
-			reg = <0x0 0x20002000 0x0 0x1000>;
+			reg = <0x0 0x20002000 0x0 0x1000>, <0x0 0x3E001000 0x0 0x1000>;
 			clocks = <&refclk>;
 			#clock-cells = <1>;
 		};
@@ -393,8 +393,8 @@
 			reg = <0x0 0x20124000 0x0 0x1000>;
 			interrupt-parent = <&plic>;
 			interrupts = <80>, <81>;
-			clocks = <&clkcfg CLK_RTC>;
-			clock-names = "rtc";
+			clocks = <&clkcfg CLK_RTC>, <&clkcfg CLK_RTCREF>;
+			clock-names = "rtc", "rtcref";
 			status = "disabled";
 		};
 
@@ -424,7 +424,7 @@
 					<0 0 0 3 &pcie_intc 2>,
 					<0 0 0 4 &pcie_intc 3>;
 			interrupt-map-mask = <0 0 0 7>;
-			clocks = <&clkcfg CLK_FIC0>, <&clkcfg CLK_FIC1>, <&clkcfg CLK_FIC3>;
+			clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
 			clock-names = "fic0", "fic1", "fic3";
 			ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
 			msi-parent = <&pcie>;
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index 30e3017f22bc..0cc17db8aaba 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -101,6 +101,7 @@ CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_RPMSG_CHAR=y
+CONFIG_RPMSG_CTRL=y
 CONFIG_RPMSG_VIRTIO=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
diff --git a/arch/riscv/configs/rv32_defconfig b/arch/riscv/configs/rv32_defconfig
index 7e5efdc3829d..6cd9d84d3e13 100644
--- a/arch/riscv/configs/rv32_defconfig
+++ b/arch/riscv/configs/rv32_defconfig
@@ -93,6 +93,7 @@ CONFIG_VIRTIO_BALLOON=y
 CONFIG_VIRTIO_INPUT=y
 CONFIG_VIRTIO_MMIO=y
 CONFIG_RPMSG_CHAR=y
+CONFIG_RPMSG_CTRL=y
 CONFIG_RPMSG_VIRTIO=y
 CONFIG_EXT4_FS=y
 CONFIG_EXT4_FS_POSIX_ACL=y
diff --git a/arch/riscv/kernel/patch.c b/arch/riscv/kernel/patch.c
index 0b552873a577..765004b60513 100644
--- a/arch/riscv/kernel/patch.c
+++ b/arch/riscv/kernel/patch.c
@@ -104,7 +104,7 @@ static int patch_text_cb(void *data)
 	struct patch_insn *patch = data;
 	int ret = 0;
 
-	if (atomic_inc_return(&patch->cpu_count) == 1) {
+	if (atomic_inc_return(&patch->cpu_count) == num_online_cpus()) {
 		ret =
 		    patch_text_nosync(patch->addr, &patch->insn,
 					    GET_INSN_LENGTH(patch->insn));
diff --git a/arch/riscv/kvm/vcpu_sbi.c b/arch/riscv/kvm/vcpu_sbi.c
index a09ecb97b890..d45e7da3f0d3 100644
--- a/arch/riscv/kvm/vcpu_sbi.c
+++ b/arch/riscv/kvm/vcpu_sbi.c
@@ -83,7 +83,7 @@ void kvm_riscv_vcpu_sbi_forward(struct kvm_vcpu *vcpu, struct kvm_run *run)
 
 void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
 				     struct kvm_run *run,
-				     u32 type, u64 flags)
+				     u32 type, u64 reason)
 {
 	unsigned long i;
 	struct kvm_vcpu *tmp;
@@ -94,7 +94,8 @@ void kvm_riscv_vcpu_sbi_system_reset(struct kvm_vcpu *vcpu,
 
 	memset(&run->system_event, 0, sizeof(run->system_event));
 	run->system_event.type = type;
-	run->system_event.flags = flags;
+	run->system_event.ndata = 1;
+	run->system_event.data[0] = reason;
 	run->exit_reason = KVM_EXIT_SYSTEM_EVENT;
 }
 
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index b0793dc0c291..05ed641a1134 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -208,8 +208,25 @@ static void __init setup_bootmem(void)
 	 * early_init_fdt_reserve_self() since __pa() does
 	 * not work for DTB pointers that are fixmap addresses
 	 */
-	if (!IS_ENABLED(CONFIG_BUILTIN_DTB))
-		memblock_reserve(dtb_early_pa, fdt_totalsize(dtb_early_va));
+	if (!IS_ENABLED(CONFIG_BUILTIN_DTB)) {
+		/*
+		 * In case the DTB is not located in a memory region we won't
+		 * be able to locate it later on via the linear mapping and
+		 * get a segfault when accessing it via __va(dtb_early_pa).
+		 * To avoid this situation copy DTB to a memory region.
+		 * Note that memblock_phys_alloc will also reserve DTB region.
+		 */
+		if (!memblock_is_memory(dtb_early_pa)) {
+			size_t fdt_size = fdt_totalsize(dtb_early_va);
+			phys_addr_t new_dtb_early_pa = memblock_phys_alloc(fdt_size, PAGE_SIZE);
+			void *new_dtb_early_va = early_memremap(new_dtb_early_pa, fdt_size);
+
+			memcpy(new_dtb_early_va, dtb_early_va, fdt_size);
+			early_memunmap(new_dtb_early_va, fdt_size);
+			_dtb_early_pa = new_dtb_early_pa;
+		} else
+			memblock_reserve(dtb_early_pa, fdt_totalsize(dtb_early_va));
+	}
 
 	early_init_fdt_scan_reserved_mem();
 	dma_contiguous_reserve(dma32_phys_limit);