Merge patch series "arm: aspeed: add initial AST2700 SoC support"

Ryan Chen <[email protected]> says:

AST2700 is the 8th generation of Integrated Remote Management
Processor introduced by ASPEED Technology Inc. It is a Board
Management Controller (BMC) SoC family with a dual-die architecture:
SoC0 ("CPU" die with four ARM Cortex-A35 application cores) and
SoC1 ("IO" die with peripherals) each SoC have its own SCU PLLs,
clock dividers and reset domains.

Link: https://lore.kernel.org/r/[email protected]

18 files changed, 2178 insertions, 1 deletions

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index a29d1807e71..25234697e6a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -1024,6 +1024,8 @@ dtb-$(CONFIG_ASPEED_AST2600) += \
 	ast2600-evb.dtb \
 	ast2600-sbp1.dtb \
 	ast2600-x4tf.dtb
+dtb-$(CONFIG_ASPEED_AST2700) += \
+	ast2700-evb.dtb
 
 dtb-$(CONFIG_STM32MP15X) += \
 	stm32mp157c-odyssey.dtb
diff --git a/arch/arm/dts/ast2700-evb.dts b/arch/arm/dts/ast2700-evb.dts
new file mode 100644
index 00000000000..e7222d9691f
--- /dev/null
+++ b/arch/arm/dts/ast2700-evb.dts
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+/dts-v1/;
+
+#include "ast2700.dtsi"
+#include "ast2700-u-boot.dtsi"
+
+/ {
+	model = "AST2700 EVB";
+	compatible = "aspeed,ast2700-evb", "aspeed,ast2700";
+
+	memory@400000000 {
+		device_type = "memory";
+		reg = <0x4 0x00000000 0x0 0x20000000>;
+	};
+
+	chosen {
+		stdout-path = &uart12;
+	};
+
+};
+
+&uart12 {
+	status = "okay";
+};
+
+&mdio0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	ethphy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&mdio1 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	ethphy1: ethernet-phy@0 {
+		reg = <0>;
+	};
+};
+
+&mac0 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&ethphy0>;
+	rx-internal-delay-ps = <0>;
+	tx-internal-delay-ps = <0>;
+};
+
+&mac1 {
+	status = "okay";
+	phy-mode = "rgmii-id";
+	phy-handle = <&ethphy1>;
+	rx-internal-delay-ps = <0>;
+	tx-internal-delay-ps = <0>;
+};
+
+&fmc {
+	status = "okay";
+
+	flash@0 {
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+
+	flash@1 {
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+
+	flash@2 {
+		status = "okay";
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+	};
+};
+
+&wdt0 {
+	status = "okay";
+};
diff --git a/arch/arm/dts/ast2700-u-boot.dtsi b/arch/arm/dts/ast2700-u-boot.dtsi
new file mode 100644
index 00000000000..8830eca3a43
--- /dev/null
+++ b/arch/arm/dts/ast2700-u-boot.dtsi
@@ -0,0 +1,25 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+&soc0 {
+	bootph-all;
+};
+
+&sdrammc {
+	bootph-all;
+};
+
+&syscon0 {
+	bootph-all;
+};
+
+&uart12 {
+	bootph-all;
+};
+
+&soc1 {
+	bootph-all;
+};
+
+&syscon1 {
+	bootph-all;
+};
diff --git a/arch/arm/dts/ast2700.dtsi b/arch/arm/dts/ast2700.dtsi
new file mode 100644
index 00000000000..3dd6826fd0c
--- /dev/null
+++ b/arch/arm/dts/ast2700.dtsi
@@ -0,0 +1,693 @@
+// SPDX-License-Identifier: GPL-2.0+
+#include <dt-bindings/clock/aspeed,ast2700-scu.h>
+#include <dt-bindings/gpio/aspeed-gpio.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/phy/phy.h>
+#include <dt-bindings/reset/aspeed,ast2700-scu.h>
+
+/ {
+	model = "Aspeed BMC";
+	compatible = "aspeed,ast2700";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+		serial2 = &uart2;
+		serial3 = &uart3;
+		serial4 = &uart4;
+		serial5 = &uart5;
+		serial6 = &uart6;
+		serial7 = &uart7;
+		serial8 = &uart8;
+		serial9 = &uart9;
+		serial10 = &uart10;
+		serial11 = &uart11;
+		serial12 = &uart12;
+		mmc0 = &emmc;
+		mmc1 = &sdhci;
+		ethernet0 = &mac0;
+		ethernet1 = &mac1;
+		ethernet2 = &mac2;
+	};
+
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x0>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x1>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x2>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a35";
+			reg = <0x0 0x3>;
+			enable-method = "psci";
+			next-level-cache = <&l2>;
+		};
+
+		l2: l2-cache0 {
+			compatible = "cache";
+		};
+
+	};
+
+	arm-pmu {
+			compatible = "arm,cortex-a35-pmu";
+			interrupts = <GIC_PPI 7 IRQ_TYPE_LEVEL_HIGH>;
+	};
+
+	timer {
+			compatible = "arm,armv8-timer";
+			interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+							<GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+							<GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+							<GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+	};
+
+	gic: interrupt-controller@12200000 {
+		compatible = "arm,gic-v3";
+		reg = <0 0x12200000 0 0x10000>, /* GICD */
+				<0 0x12280000 0 0x80000>, /* GICR */
+				<0 0x40440000 0 0x1000>;  /* GICC */
+		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		#interrupt-cells = <3>;
+		interrupt-controller;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		atf: trusted-firmware-a@430000000 {
+			reg = <0x4 0x30000000 0x0 0x80000>;
+			no-map;
+		};
+
+		optee_core: optee-core@430080000 {
+			reg = <0x4 0x30080000 0x0 0x1000000>;
+			no-map;
+		};
+	};
+
+	soc0: soc@10000000 {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x4000000>;
+
+	uhci0: usb@12040000 {
+		compatible = "aspeed,ast2700-uhci", "generic-uhci";
+		reg = <0x0 0x12040000 0x0 0x100>;
+		#ports = <2>;
+		clocks = <&syscon0 SCU0_CLK_GATE_UHCICLK>;
+		resets = <&syscon0 SCU0_RESET_UHCI>;
+		status = "disabled";
+	};
+
+	ehci0: usb@12061000 {
+		compatible = "aspeed,ast2700-ehci", "generic-ehci";
+		reg = <0x0 0x12061000 0x0 0x100>;
+		clocks = <&syscon0 SCU0_CLK_GATE_PORTAUSB2CLK>;
+		resets = <&syscon0 SCU0_RESET_PORTA_VHUB_EHCI>;
+		status = "disabled";
+	};
+
+		vhuba0: usb-vhub@12060000 {
+			compatible = "aspeed,ast2700-usb-vhuba0";
+			reg = <0 0x12060000 0 0x350>;
+			clocks = <&syscon0 SCU0_CLK_GATE_PORTAUSB2CLK>;
+			resets = <&syscon0 SCU0_RESET_PORTA_VHUB_EHCI>;
+			status = "disabled";
+		};
+
+		vhubb0: usb-vhub@12062000 {
+			compatible = "aspeed,ast2700-usb-vhubb0";
+			reg = <0x0 0x12062000 0x0 0x350>;
+			clocks = <&syscon0 SCU0_CLK_GATE_PORTBUSB2CLK>;
+			resets = <&syscon0 SCU0_RESET_PORTB_VHUB_EHCI>;
+			status = "disabled";
+		};
+
+	ehci1: usb@12063000 {
+		compatible = "aspeed,ast2700-ehci", "generic-ehci";
+		reg = <0x0 0x12063000 0x0 0x100>;
+		clocks = <&syscon0 SCU0_CLK_GATE_PORTBUSB2CLK>;
+		resets = <&syscon0 SCU0_RESET_PORTB_VHUB_EHCI>;
+		status = "disabled";
+	};
+
+		emmc_controller: sdc@12090000 {
+			compatible = "aspeed,ast2700-sd-controller";
+			reg = <0 0x12090000 0 0x100>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			ranges = <0x0 0x0 0x12090000 0x10000>;
+			clocks = <&syscon0 SCU0_CLK_GATE_EMMCCLK>;
+			resets = <&syscon0 SCU0_RESET_EMMC>;
+			status = "disable";
+
+			emmc: sdhci@100 {
+				compatible = "aspeed,ast2700-sdhci";
+				reg = <0x100 0x100>;
+				sdhci,auto-cmd12;
+				clocks = <&syscon0 SCU0_CLK_GATE_EMMCCLK>;
+				status = "disable";
+			};
+		};
+
+	intc0: interrupt-controller@12100000 {
+			compatible = "aspeed,ast2700-intc0";
+			reg = <0x0 0x12100000 0x0 0x3c00>;
+			interrupt-controller;
+			interrupt-parent = <&gic>;
+			#interrupt-cells = <1>;
+	};
+
+		sdrammc: sdrammc@12c00000 {
+			compatible = "aspeed,ast2700-sdrammc";
+			reg = <0 0x12c00000 0 0x3000 0 0x13000000 0 0x300 >;
+			clocks = <&syscon0 SCU0_CLK_MPLL>;
+			resets = <&syscon0 SCU0_RESET_SDRAM>;
+			aspeed,scu0 = <&syscon0>;
+			aspeed,scu1 = <&syscon1>;
+		};
+
+		syscon0: syscon@12c02000 {
+			compatible = "aspeed,ast2700-scu0", "syscon", "simple-mfd";
+			reg = <0x0 0x12c02000 0x0 0x1000>;
+			ranges = <0x0 0x0 0x12c02000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+
+			pinctrl0: pinctrl@400 {
+				compatible = "aspeed,ast2700-soc0-pinctrl";
+				reg = <0x400 0x318>;
+			};
+		};
+
+		gpio0: gpio@12c11000 {
+			compatible = "aspeed,ast2700-gpio";
+			reg = <0x0 0x12c11000 0x0 0x1000>;
+			gpio-ranges = <&pinctrl0 0 0 12>;
+			ngpios = <12>;
+			clocks = <&syscon0 SCU0_CLK_APB>;
+		};
+
+		uart4: serial@12c1a000 {
+			compatible = "ns16550a";
+			reg = <0x0 0x12c1a000 0x0 0x1000>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon0 SCU0_CLK_GATE_UART4CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+	mbox0: mbox@12c1c200 {
+		compatible = "aspeed,ast2700-mailbox";
+		reg = <0x0 0x12c1c200 0x0 0x100>, <0x0 0x12c1c300 0x0 0x100>;
+		reg-names = "tx", "rx";
+		#mbox-cells = <1>;
+	};
+
+	mbox1: mbox@12c1c600 {
+		compatible = "aspeed,ast2700-mailbox";
+		reg = <0x0 0x12c1c600 0x0 0x100>, <0x0 0x12c1c700 0x0 0x100>;
+		reg-names = "tx", "rx";
+		#mbox-cells = <1>;
+	};
+	};
+
+	soc1: soc@14000000 {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges = <0x0 0x14000000 0x0 0x14000000 0x2 0xec000000>;
+
+		fmc: spi@14000000 {
+			reg = <0x0 0x14000000 0x0 0xc4>, <0x1 0x00000000 0x0 0x80000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "aspeed,ast2700-fmc";
+			status = "disabled";
+			clocks = <&syscon1 SCU1_CLK_AHB>;
+			num-cs = <3>;
+
+			flash@0 {
+				reg = <0>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+
+			flash@1 {
+				reg = <1>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+
+			flash@2 {
+				reg = <2>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+		};
+
+		spi0: spi@14010000 {
+			reg = <0x0 0x14010000 0x0 0xc4>, <0x1 0x80000000 0x0 0x80000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "aspeed,ast2700-spi";
+			status = "disabled";
+			clocks = <&syscon1 SCU1_CLK_AHB>;
+			num-cs = <2>;
+
+			flash@0 {
+				reg = <0>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+
+			flash@1 {
+				reg = <1>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+		};
+
+		spi1: spi@14020000 {
+			reg = <0x0 0x14020000 0x0 0xc4>, <0x2 0x00000000 0x0 0x80000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "aspeed,ast2700-spi";
+			status = "disabled";
+			clocks = <&syscon1 SCU1_CLK_AHB>;
+			num-cs = <2>;
+
+			flash@0 {
+				reg = <0>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+
+			flash@1 {
+				reg = <1>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+		};
+
+		spi2: spi@14030000 {
+			reg = <0x0 0x14030000 0x0 0xc4>, <0x2 0x80000000 0x0 0x80000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			compatible = "aspeed,ast2700-spi";
+			status = "disabled";
+			clocks = <&syscon1 SCU1_CLK_AHB>;
+			resets = <&syscon1 SCU1_RESET_SPI2>;
+			num-cs = <2>;
+
+			flash@0 {
+				reg = <0>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+
+			flash@1 {
+				reg = <1>;
+				compatible = "jedec,spi-nor";
+				status = "disabled";
+			};
+		};
+
+	mdio0: mdio@14040000 {
+		compatible = "aspeed,ast2700-mdio";
+		reg = <0 0x14040000 0 0x8>;
+		resets = <&syscon1 SCU1_RESET_MII>;
+		status = "disabled";
+	};
+
+	mdio1: mdio@14040008 {
+		compatible = "aspeed,ast2700-mdio";
+		reg = <0 0x14040008 0 0x8>;
+		resets = <&syscon1 SCU1_RESET_MII>;
+		status = "disabled";
+	};
+
+	mdio2: mdio@14040010 {
+		compatible = "aspeed,ast2700-mdio";
+		reg = <0 0x14040010 0 0x8>;
+		resets = <&syscon1 SCU1_RESET_MII>;
+		status = "disabled";
+	};
+
+		mac0: ftgmac@14050000 {
+			compatible = "aspeed,ast2700-mac", "faraday,ftgmac100";
+			reg = <0x0 0x14050000 0x0 0x200>;
+			clocks = <&syscon1 SCU1_CLK_GATE_MAC0CLK>;
+			resets = <&syscon1 SCU1_RESET_MAC0>;
+			status = "disabled";
+		};
+
+		mac1: ftgmac@14060000 {
+			compatible = "aspeed,ast2700-mac", "faraday,ftgmac100";
+			reg = <0x0 0x14060000 0x0 0x200>;
+			clocks = <&syscon1 SCU1_CLK_GATE_MAC1CLK>;
+			resets = <&syscon1 SCU1_RESET_MAC1>;
+			status = "disabled";
+		};
+
+		mac2: ftgmac@14070000 {
+			compatible = "aspeed,ast2700-mac", "faraday,ftgmac100";
+			reg = <0x0 0x14070000 0x0 0x200>;
+			clocks = <&syscon1 SCU1_CLK_GATE_MAC2CLK>;
+			resets = <&syscon1 SCU1_RESET_MAC2>;
+			status = "disabled";
+		};
+
+		sdio_controller: sdc@14080000 {
+			compatible = "aspeed,ast2700-sd-controller";
+			reg = <0 0x14080000 0 0x100>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			clocks = <&syscon1 SCU1_CLK_GATE_SDCLK>;
+			resets = <&syscon1 SCU1_RESET_SD>;
+			ranges = <0 0 0x14080000 0x10000>;
+			status = "disable";
+
+			sdhci: sdhci@100 {
+				compatible = "aspeed,ast2700-sdhci";
+				reg = <0x100 0x100>;
+				sdhci,auto-cmd12;
+				clocks = <&syscon1 SCU1_CLK_GATE_SDCLK>;
+			};
+		};
+
+	uhci1: usb@14110000 {
+			compatible = "aspeed,ast2700-uhci", "generic-uhci";
+			reg = <0x0 0x14110000 0x0 0x100>;
+			#ports = <2>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UHCICLK>;
+			resets = <&syscon1 SCU1_RESET_UHCI>;
+			status = "disabled";
+	};
+
+	vhubc: usb-vhub@14120000 {
+			compatible = "aspeed,ast2700-usb-vhub";
+			reg = <0x0 0x14120000 0x0 0x820>;
+			clocks = <&syscon1 SCU1_CLK_GATE_PORTCUSB2CLK>;
+			resets = <&syscon1 SCU1_RESET_PORTC_VHUB_EHCI>;
+			aspeed,vhub-downstream-ports = <7>;
+			aspeed,vhub-generic-endpoints = <21>;
+			status = "disabled";
+	};
+
+	ehci2: usb@14121000 {
+			compatible = "aspeed,ast2700-ehci", "generic-ehci";
+			reg = <0x0 0x14121000 0x0 0x100>;
+			clocks = <&syscon1 SCU1_CLK_GATE_PORTCUSB2CLK>;
+			resets = <&syscon1 SCU1_RESET_PORTC_VHUB_EHCI>;
+			status = "disabled";
+	};
+
+	vhubd: usb-vhub@14122000 {
+			compatible = "aspeed,ast2700-usb-vhub";
+			reg = <0x0 0x14122000 0x0 0x820>;
+			clocks = <&syscon1 SCU1_CLK_GATE_PORTDUSB2CLK>;
+			resets = <&syscon1 SCU1_RESET_PORTD_VHUB_EHCI>;
+			aspeed,vhub-downstream-ports = <7>;
+			aspeed,vhub-generic-endpoints = <21>;
+			status = "disabled";
+	};
+
+	ehci3: usb@14123000 {
+			compatible = "aspeed,ast2700-ehci", "generic-ehci";
+			reg = <0x0 0x14123000 0x0 0x100>;
+			clocks = <&syscon1 SCU1_CLK_GATE_PORTDUSB2CLK>;
+			resets = <&syscon1 SCU1_RESET_PORTD_VHUB_EHCI>;
+			status = "disabled";
+	};
+
+		syscon1: syscon@14c02000 {
+			compatible = "aspeed,ast2700-scu1", "syscon", "simple-mfd";
+			reg = <0x0 0x14c02000 0x0 0x1000>;
+			ranges = <0x0 0x0 0x14c02000 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			#clock-cells = <1>;
+			#reset-cells = <1>;
+
+			pinctrl1: pinctrl@400 {
+					compatible = "aspeed,ast2700-soc1-pinctrl";
+					reg = <0x400 0x2a0>;
+			};
+		};
+
+	gpio1: gpio@14c0b000 {
+			compatible = "aspeed,ast2700-gpio";
+			reg = <0x0 0x14c0b000 0x0 0x1000>;
+			#gpio-cells = <2>;
+			gpio-controller;
+			gpio-ranges = <&pinctrl1 0 0 216>;
+			ngpios = <216>;
+			clocks = <&syscon1 SCU1_CLK_AHB>;
+	};
+
+		intc1: interrupt-controller@14c18000 {
+			compatible = "aspeed,ast2700-intc1";
+			reg = <0 0x14c18000 0 0x400>;
+			interrupt-controller;
+			interrupt-parent = <&intc0>;
+			#interrupt-cells = <1>;
+		};
+
+		uart0: serial@14c33000 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33000 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART0CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart1: serial@14c33100 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33100 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART1CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart2: serial@14c33200 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33200 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART2CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart3: serial@14c33300 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33300 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART3CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart5: serial@14c33400 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33400 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART5CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart6: serial@14c33500 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33500 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART6CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart7: serial@14c33600 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33600 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART7CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart8: serial@14c33700 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33700 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART8CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart9: serial@14c33800 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33800 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART9CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart10: serial@14c33900 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33900 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART10CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart11: serial@14c33a00 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33a00 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART11CLK>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+		uart12: serial@14c33b00 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33b00 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_GATE_UART12CLK>;
+			clock-frequency = <1846154>;
+			no-loopback-test;
+			status = "disabled";
+		};
+
+	uart13: serial@14c33c00 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33c00 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_UART13>;
+			no-loopback-test;
+			status = "disabled";
+	};
+
+	uart14: serial@14c33d00 {
+			compatible = "ns16550a";
+			reg = <0x0 0x14c33d00 0x0 0x100>;
+			reg-shift = <2>;
+			reg-io-width = <4>;
+			clocks = <&syscon1 SCU1_CLK_UART14>;
+			no-loopback-test;
+			status = "disabled";
+	};
+
+		wdt0: watchdog@14c37000 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37000 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt1: watchdog@14c37080 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37080 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt2: watchdog@14c37100 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37100 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt3: watchdog@14c37180 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37180 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt4: watchdog@14c37200 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37200 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt5: watchdog@14c37280 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37280 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt6: watchdog@14c37300 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37300 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt7: watchdog@14c37380 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37380 0x0 0x80>;
+			status = "disabled";
+		};
+
+		wdt_abr: watchdog@14c37400 {
+			compatible = "aspeed,ast2700-wdt";
+			reg = <0x0 0x14c37400 0x0 0x80>;
+			status = "disabled";
+		};
+
+		mbox2: mbox@14c39200 {
+			compatible = "aspeed,ast2700-mailbox";
+			reg = <0x0 0x14c39200 0x0 0x100>, <0x0 0x14c39300 0x0 0x100>;
+			reg-names = "tx", "rx";
+			#mbox-cells = <1>;
+		};
+
+	};
+};
diff --git a/arch/arm/include/asm/arch-aspeed/fmc_hdr.h b/arch/arm/include/asm/arch-aspeed/fmc_hdr.h
new file mode 100644
index 00000000000..c60277e1a81
--- /dev/null
+++ b/arch/arm/include/asm/arch-aspeed/fmc_hdr.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) ASPEED Technology Inc.
+ */
+
+#ifndef __ASM_AST2700_FMC_HDR_H__
+#define __ASM_AST2700_FMC_HDR_H__
+
+#include <linux/types.h>
+
+#define HDR_MAGIC		0x48545341	/* ASTH */
+#define HDR_PB_MAX		30
+
+enum prebuilt_type {
+	PBT_END_MARK = 0x0,
+
+	PBT_DDR4_PMU_TRAIN_IMEM,
+	PBT_DDR4_PMU_TRAIN_DMEM,
+	PBT_DDR4_2D_PMU_TRAIN_IMEM,
+	PBT_DDR4_2D_PMU_TRAIN_DMEM,
+	PBT_DDR5_PMU_TRAIN_IMEM,
+	PBT_DDR5_PMU_TRAIN_DMEM,
+	PBT_DP_FW,
+	PBT_UEFI_X64_AST2700,
+
+	PBT_NUM
+};
+
+struct fmc_hdr_preamble {
+	u32 magic;
+	u32 version;
+};
+
+struct fmc_hdr_body {
+	u32 fmc_size;
+	union {
+		struct {
+			u32 type;
+			u32 size;
+		} pbs[0];
+		u32 raz[29];
+	};
+};
+
+struct fmc_hdr {
+	struct fmc_hdr_preamble preamble;
+	struct fmc_hdr_body body;
+} __packed;
+
+int fmc_hdr_get_prebuilt(u32 type, u32 *ofst, u32 *size);
+
+#endif
diff --git a/arch/arm/include/asm/arch-aspeed/platform.h b/arch/arm/include/asm/arch-aspeed/platform.h
index 589abd4a3f6..82699c03c00 100644
--- a/arch/arm/include/asm/arch-aspeed/platform.h
+++ b/arch/arm/include/asm/arch-aspeed/platform.h
@@ -18,8 +18,36 @@
 #define ASPEED_DRAM_BASE	0x80000000
 #define ASPEED_SRAM_BASE	0x10000000
 #define ASPEED_SRAM_SIZE	0x16000
+#elif defined(CONFIG_ASPEED_AST2700)
+#define ASPEED_CPU_AHBC_BASE	0x12000000
+#define ASPEED_CPU_REVISION_ID	0x12C02000
+#define ASPEED_CPU_SCU_BASE	0x12C02000
+#define ASPEED_CPU_HW_STRAP1	0x12C02010
+#define ASPEED_CPU_RESET_LOG1	0x12C02050
+#define ASPEED_CPU_RESET_LOG2	0x12C02060
+#define ASPEED_CPU_RESET_LOG3	0x12C02070
+#define ASPEED_MAC_COUNT	3
+#define ASPEED_DRAM_BASE	0x400000000
+#define ASPEED_SRAM_BASE	0x10000000
+#define ASPEED_SRAM_SIZE	0x20000
+#define ASPEED_FMC_REG_BASE	0x14000000
+#define ASPEED_FMC_CS0_BASE	0x100000000
+#define ASPEED_FMC_CS0_SIZE	0x80000000
+#define ASPEED_IO_MAC0_BASE	0x14050000
+#define ASPEED_IO_MAC1_BASE	0x14060000
+#define ASPEED_IO_AHBC_BASE	0x140b0000
+#define ASPEED_IO_REVISION_ID	0x14C02000
+#define CHIP_AST2700A1_ID_MASK	BIT(16)
+#define ASPEED_IO_SCU_BASE	0x14C02000
+#define ASPEED_IO_HW_STRAP1	0x14C02010
+#define ASPEED_IO_RESET_LOG1	0x14C02050
+#define ASPEED_IO_RESET_LOG2	0x14C02060
+#define ASPEED_IO_RESET_LOG3	0x14C02070
+#define ASPEED_IO_RESET_LOG4	0x14C02080
+#define ASPEED_IO_GPIO_BASE	0x14C0B000
+#define ASPEED_WDTA_BASE	0x14C37400
 #else
-#err "Unrecognized Aspeed platform."
+#error "Unrecognized Aspeed platform."
 #endif
 
 #endif
diff --git a/arch/arm/include/asm/arch-aspeed/scu.h b/arch/arm/include/asm/arch-aspeed/scu.h
new file mode 100644
index 00000000000..1aa7d38bace
--- /dev/null
+++ b/arch/arm/include/asm/arch-aspeed/scu.h
@@ -0,0 +1,145 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) Aspeed Technology Inc.
+ */
+#ifndef __ASM_AST2700_SCU_H__
+#define __ASM_AST2700_SCU_H__
+
+/* SCU0: CPU-die SCU */
+#define SCU0_HWSTRAP				0x010
+#define   SCU0_HWSTRAP_DIS_RVAS			BIT(30)
+#define   SCU0_HWSTRAP_DIS_WDTFULL		BIT(25)
+#define   SCU0_HWSTRAP_DISARMICE_TZ		BIT(22)
+#define   SCU0_HWSTRAP_DISABLE_XHCI		BIT(21)
+#define   SCU0_HWSTRAP_BOOTEMMCSPEED		BIT(20)
+#define   SCU0_HWSTRAP_VGA_CC			BIT(18)
+#define   SCU0_HWSTRAP_EN_OPROM			BIT(17)
+#define   SCU0_HWSTRAP_DISARMICE		BIT(16)
+#define   SCU0_HWSTRAP_TSPRSNTSEL		BIT(9)
+#define   SCU0_HWSTRAP_DISDEBUG			BIT(8)
+#define   SCU0_HWSTRAP_HCLKHPLL			BIT(7)
+#define   SCU0_HWSTRAP_HCLKSEL			GENMASK(6, 5)
+#define   SCU0_HWSTRAP_CPUHPLL			BIT(4)
+#define   SCU0_HWSTRAP_HPLLFREQ			GENMASK(3, 2)
+#define   SCU0_HWSTRAP_BOOTSPI			BIT(1)
+#define   SCU0_HWSTRAP_HWSTRAP_DISCPU		BIT(0)
+#define SCU0_DBGCTL				0x0c8
+#define   SCU0_DBGCTL_MASK			GENMASK(14, 0)
+#define   SCU0_DBGCTL_UARTDBG			BIT(1)
+#define SCU0_RSTCTL1				0x200
+#define   SCU0_RSTCTL1_EMMC			BIT(17)
+#define   SCU0_RSTCTL1_HACE			BIT(4)
+#define SCU0_RSTCTL1_CLR			0x204
+#define   SCU0_RSTCTL1_CLR_EMMC			BIT(17)
+#define   SCU0_RSTCTL1_CLR_HACE			BIT(4)
+#define SCU0_CLKGATE1				0x240
+#define   SCU0_CLKGATE1_EMMC			BIT(27)
+#define   SCU0_CLKGATE1_HACE			BIT(13)
+#define   SCU0_CLKGATE1_DDRPHY			BIT(11)
+#define SCU0_CLKGATE1_CLR			0x244
+#define   SCU0_CLKGATE1_CLR_EMMC		BIT(27)
+#define   SCU0_CLKGATE1_CLR_HACE		BIT(13)
+#define   SCU0_CLKGATE1_CLR_DDRPHY		BIT(11)
+#define SCU0_VGA0_SCRATCH			0x900
+#define   SCU0_VGA0_SCRATCH_DRAM_INIT		BIT(6)
+#define SCU0_PCI_MISC70				0xa70
+#define   SCU0_PCI_MISC70_EN_PCIEXHCI0		BIT(3)
+#define   SCU0_PCI_MISC70_EN_PCIEEHCI0		BIT(2)
+#define   SCU0_PCI_MISC70_EN_PCIEVGA0		BIT(0)
+#define SCU0_PCI_MISC80				0xa80
+#define   SCU0_PCI_MISC80_EN_PCIEXHCI1		BIT(3)
+#define   SCU0_PCI_MISC80_EN_PCIEEHCI1		BIT(2)
+#define   SCU0_PCI_MISC80_EN_PCIEVGA1		BIT(0)
+#define SCU0_PCI_MISCF0				0xaf0
+#define   SCU0_PCI_MISCF0_EN_PCIEXHCI1		BIT(3)
+#define   SCU0_PCI_MISCF0_EN_PCIEEHCI1		BIT(2)
+#define   SCU0_PCI_MISCF0_EN_PCIEVGA1		BIT(0)
+#define SCU0_WPROT1				0xe04
+#define   SCU0_WPROT1_0C8			BIT(18)
+
+/* SCU1: IO-die SCU */
+#define SCU1_REVISION				0x000
+#define   SCU1_REVISION_HWID			GENMASK(23, 16)
+#define   SCU1_REVISION_CHIP_EFUSE		GENMASK(15, 8)
+#define SCU1_HWSTRAP1				0x010
+#define   SCU1_HWSTRAP1_DIS_CPTRA		BIT(30)
+#define   SCU1_HWSTRAP1_RECOVERY_USB_PORT	GENMASK(29, 28)
+#define   SCU1_HWSTRAP1_RECOVERY_INTERFACE	GENMASK(27, 26)
+#define   SCU1_HWSTRAP1_RECOVERY_I3C		(BIT(26) | BIT(27))
+#define   SCU1_HWSTRAP1_RECOVERY_I2C		BIT(27)
+#define   SCU1_HWSTRAP1_RECOVERY_USB		BIT(26)
+#define   SCU1_HWSTRAP1_SPI_FLASH_4_BYTE_MODE	BIT(25)
+#define   SCU1_HWSTRAP1_SPI_FLASH_WAIT_READY	BIT(24)
+#define   SCU1_HWSTRAP1_BOOT_UFS		BIT(23)
+#define   SCU1_HWSTRAP1_DIS_ROM			BIT(22)
+#define   SCU1_HWSTRAP1_DIS_CPTRAJTAG		BIT(20)
+#define   SCU1_HWSTRAP1_UARTDBGSEL		BIT(19)
+#define   SCU1_HWSTRAP1_DIS_UARTDBG		BIT(18)
+#define   SCU1_HWSTRAP1_DIS_WDTFULL		BIT(17)
+#define   SCU1_HWSTRAP1_DISDEBUG1		BIT(16)
+#define   SCU1_HWSTRAP1_LTPI0_IO_DRIVING	GENMASK(15, 14)
+#define   SCU1_HWSTRAP1_ACPI_1			BIT(13)
+#define   SCU1_HWSTRAP1_ACPI_0			BIT(12)
+#define   SCU1_HWSTRAP1_BOOT_EMMC_UFS		BIT(11)
+#define   SCU1_HWSTRAP1_DDR4			BIT(10)
+#define   SCU1_HWSTRAP1_LOW_SECURE		BIT(8)
+#define   SCU1_HWSTRAP1_EN_EMCS			BIT(7)
+#define   SCU1_HWSTRAP1_EN_GPIOPT		BIT(6)
+#define   SCU1_HWSTRAP1_EN_SECBOOT		BIT(5)
+#define   SCU1_HWSTRAP1_EN_RECOVERY_BOOT	BIT(4)
+#define   SCU1_HWSTRAP1_LTPI0_EN		BIT(3)
+#define   SCU1_HWSTRAP1_LTPI_IDX		BIT(2)
+#define   SCU1_HWSTRAP1_LTPI1_EN		BIT(1)
+#define   SCU1_HWSTRAP1_LTPI_MODE		BIT(0)
+#define SCU1_HWSTRAP2				0x030
+#define   SCU1_HWSTRAP2_FMC_ABR_SINGLE_FLASH	BIT(29)
+#define   SCU1_HWSTRAP2_FMC_ABR_CS_SWAP_DIS	BIT(28)
+#define   SCU1_HWSTRAP2_SPI_TPM_PCR_EXT_EN	BIT(27)
+#define   SCU1_HWSTRAP2_SPI_TPM_HASH_ALGO	GENMASK(26, 25)
+#define   SCU1_HWSTRAP2_BOOT_SPI_FREQ		GENMASK(24, 23)
+#define   SCU1_HWSTRAP2_RESERVED		GENMASK(22, 19)
+#define   SCU1_HWSTRAP2_FWSPI_CRTM		GENMASK(18, 17)
+#define   SCU1_HWSTRAP2_EN_FWSPIAUX		BIT(16)
+#define   SCU1_HWSTRAP2_FWSPISIZE		GENMASK(15, 13)
+#define   SCU1_HWSTRAP2_DIS_REC			BIT(12)
+#define   SCU1_HWSTRAP2_EN_CPTRA_DBG		BIT(11)
+#define   SCU1_HWSTRAP2_TPM_PCR_INDEX		GENMASK(6, 2)
+#define   SCU1_HWSTRAP2_ROM_CLEAR_SRAM		BIT(1)
+#define   SCU1_HWSTRAP2_ABR			BIT(0)
+#define SCU1_RSTLOG0				0x050
+#define   SCU1_RSTLOG0_BMC_CPU			BIT(12)
+#define   SCU1_RSTLOG0_ABR			BIT(2)
+#define   SCU1_RSTLOG0_EXTRSTN			BIT(1)
+#define   SCU1_RSTLOG0_SRST			BIT(0)
+#define SCU1_MISC1				0x0c0
+#define   SCU1_MISC1_UARTDBG_ROUTE		GENMASK(23, 22)
+#define   SCU1_MISC1_UART12_ROUTE		GENMASK(21, 20)
+#define SCU1_DBGCTL				0x0c8
+#define   SCU1_DBGCTL_MASK			GENMASK(7, 0)
+#define   SCU1_DBGCTL_UARTDBG			BIT(6)
+#define SCU1_RNG_DATA				0x0f4
+#define SCU1_RSTCTL1				0x200
+#define   SCU1_RSTCTL1_I3C(x)			(BIT(16) << (x))
+#define SCU1_RSTCTL1_CLR			0x204
+#define   SCU1_RSTCTL1_CLR_I3C(x)		(BIT(16) << (x))
+#define SCU1_RSTCTL2				0x220
+#define   SCU1_RSTCTL2_LTPI1			BIT(22)
+#define   SCU1_RSTCTL2_LTPI0			BIT(20)
+#define   SCU1_RSTCTL2_I2C			BIT(15)
+#define   SCU1_RSTCTL2_CPTRA			BIT(9)
+#define SCU1_RSTCTL2_CLR			0x224
+#define   SCU1_RSTCTL2_CLR_I2C			BIT(15)
+#define   SCU1_RSTCTL2_CLR_CPTRA		BIT(9)
+#define SCU1_CLKGATE1				0x240
+#define   SCU1_CLKGATE1_I3C(x)			(BIT(16) << (x))
+#define   SCU1_CLKGATE1_I2C			BIT(15)
+#define SCU1_CLKGATE1_CLR			0x244
+#define   SCU1_CLKGATE1_CLR_I3C(x)		(BIT(16) << (x))
+#define   SCU1_CLKGATE1_CLR_I2C			BIT(15)
+#define SCU1_CLKGATE2				0x260
+#define   SCU1_CLKGATE2_LTPI1_TX		BIT(19)
+#define   SCU1_CLKGATE2_LTPI_AHB		BIT(10)
+#define   SCU1_CLKGATE2_LTPI0_TX		BIT(9)
+#define SCU1_CLKGATE2_CLR			0x264
+
+#endif
diff --git a/arch/arm/include/asm/arch-aspeed/scu_ast2700.h b/arch/arm/include/asm/arch-aspeed/scu_ast2700.h
new file mode 100644
index 00000000000..b973fcc6610
--- /dev/null
+++ b/arch/arm/include/asm/arch-aspeed/scu_ast2700.h
@@ -0,0 +1,514 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) Aspeed Technology Inc.
+ */
+#ifndef _ASM_ARCH_SCU_AST2700_H
+#define _ASM_ARCH_SCU_AST2700_H
+
+#include <linux/types.h>
+
+/* SoC0 SCU Register */
+#define SCU_CPU_REVISION_ID_HW			GENMASK(23, 16)
+#define SCU_CPU_REVISION_ID_EFUSE		GENMASK(15, 8)
+
+#define SCU_CPU_HWSTRAP_DIS_RVAS		BIT(30)
+#define SCU_CPU_HWSTRAP_DP_SRC			BIT(29)
+#define SCU_CPU_HWSTRAP_DAC_SRC			BIT(28)
+#define SCU_CPU_HWSTRAP_VRAM_SIZE		GENMASK(11, 10)
+#define SCU_CPU_HWSTRAP_DIS_CPU			BIT(0)
+
+#define SCU_CPU_MISC_DP_RESET_SRC		BIT(11)
+#define SCU_CPU_MISC_XDMA_CLIENT_EN		BIT(4)
+#define SCU_CPU_MISC_2D_CLIENT_EN		BIT(3)
+
+#define SCU_CPU_RST_SSP				BIT(30)
+#define SCU_CPU_RST_DPMCU			BIT(29)
+#define SCU_CPU_RST_DP				BIT(28)
+#define SCU_CPU_RST_XDMA1			BIT(26)
+#define SCU_CPU_RST_XDMA0			BIT(25)
+#define SCU_CPU_RST_EMMC			BIT(17)
+#define SCU_CPU_RST_EN_DP_PCI			BIT(15)
+#define SCU_CPU_RST_CRT				BIT(13)
+#define SCU_CPU_RST_RVAS1			BIT(10)
+#define SCU_CPU_RST_RVAS0			BIT(9)
+#define SCU_CPU_RST_2D				BIT(7)
+#define SCU_CPU_RST_VIDEO			BIT(6)
+#define SCU_CPU_RST_SOC				BIT(5)
+#define SCU_CPU_RST_DDRPHY			BIT(1)
+
+#define SCU_CPU_RST2_VGA			BIT(12)
+#define SCU_CPU_RST2_E2M1			BIT(11)
+#define SCU_CPU_RST2_E2M0			BIT(10)
+#define SCU_CPU_RST2_TSP			BIT(9)
+
+#define SCU_CPU_VGA_FUNC_DAC_OUTPUT		GENMASK(11, 10)
+#define SCU_CPU_VGA_FUNC_DP_OUTPUT		GENMASK(9, 8)
+#define SCU_CPU_VGA_FUNC_DAC_DISABLE		BIT(7)
+
+#define SCU_CPU_PCI_MISC0C_FB_SIZE		GENMASK(4, 0)
+
+#define SCU_CPU_PCI_MISC70_EN_XHCI		BIT(3)
+#define SCU_CPU_PCI_MISC70_EN_EHCI		BIT(2)
+#define SCU_CPU_PCI_MISC70_EN_IPMI		BIT(1)
+#define SCU_CPU_PCI_MISC70_EN_VGA		BIT(0)
+
+#define SCU_CPU_HPLL_P				GENMASK(22, 19)
+#define SCU_CPU_HPLL_N				GENMASK(18, 13)
+#define SCU_CPU_HPLL_M				GENMASK(12, 0)
+
+#define SCU_CPU_HPLL2_LOCK			BIT(31)
+#define SCU_CPU_HPLL2_BWADJ			GENMASK(11, 0)
+
+#define SCU_CPU_SSP_TSP_RESET_STS		BIT(8)
+#define SCU_CPU_SSP_TSP_SRAM_SD			BIT(7)
+#define SCU_CPU_SSP_TSP_SRAM_DSLP		BIT(6)
+#define SCU_CPU_SSP_TSP_SRAM_SLP		BIT(5)
+#define SCU_CPU_SSP_TSP_NIDEN			BIT(4)
+#define SCU_CPU_SSP_TSP_DBGEN			BIT(3)
+#define SCU_CPU_SSP_TSP_DBG_ENABLE		BIT(2)
+#define SCU_CPU_SSP_TSP_RESET			BIT(1)
+#define SCU_CPU_SSP_TSP_ENABLE			BIT(0)
+
+/* SoC1 SCU Register */
+#define SCU_IO_HWSTRAP_UFS			BIT(23)
+#define SCU_IO_HWSTRAP_EMMC			BIT(11)
+#define SCU_IO_HWSTRAP_SECBOOT			BIT(5)
+#define SCU_IO_HWSTRAP_LTPI0_EN			BIT(3)
+#define SCU_IO_HWSTRAP_LTPI1_EN			BIT(1)
+
+/* CLK information */
+#define CLKIN_25M 25000000UL
+
+#define SCU_CPU_CLKGATE1_RVAS1			BIT(28)
+#define SCU_CPU_CLKGATE1_RVAS0			BIT(25)
+#define SCU_CPU_CLKGATE1_E2M1			BIT(19)
+#define SCU_CPU_CLKGATE1_DP			BIT(18)
+#define SCU_CPU_CLKGATE1_DAC			BIT(17)
+#define SCU_CPU_CLKGATE1_E2M0			BIT(12)
+#define SCU_CPU_CLKGATE1_VGA1			BIT(10)
+#define SCU_CPU_CLKGATE1_VGA0			BIT(5)
+
+/*
+ * Clock divider/multiplier configuration struct.
+ * For H-PLL and M-PLL the formula is
+ * (Output Frequency) = CLKIN * ((M + 1) / (N + 1)) / (P + 1)
+ * M - Numerator
+ * N - Denumerator
+ * P - Post Divider
+ * They have the same layout in their control register.
+ *
+ */
+union ast2700_pll_reg {
+	u32 w;
+	struct {
+		uint16_t m : 13;		/* bit[12:0]	*/
+		uint8_t n : 6;			/* bit[18:13]	*/
+		uint8_t p : 4;			/* bit[22:19]	*/
+		uint8_t off : 1;		/* bit[23]	*/
+		uint8_t bypass : 1;		/* bit[24]	*/
+		uint8_t reset : 1;		/* bit[25]	*/
+		uint8_t reserved : 6;		/* bit[31:26]	*/
+	} b;
+};
+
+struct ast2700_pll_cfg {
+	union ast2700_pll_reg reg;
+	unsigned int ext_reg;
+};
+
+struct ast2700_pll_desc {
+	u32 in;
+	u32 out;
+	struct ast2700_pll_cfg cfg;
+};
+
+struct aspeed_clks {
+	ulong id;
+	const char *name;
+};
+
+#ifndef __ASSEMBLY__
+struct ast2700_scu0 {
+	u32 chip_id1;		/* 0x000 */
+	u32 rsv_0x04[3];		/* 0x004 ~ 0x00C */
+	u32 hwstrap1;		/* 0x010 */
+	u32 hwstrap1_clr;		/* 0x014 */
+	u32 rsv_0x18[2];		/* 0x018 ~ 0x01C */
+	u32 hwstrap1_lock;		/* 0x020 */
+	u32 hwstrap1_sec1;	/* 0x024 */
+	u32 hwstrap1_sec2;	/* 0x028 */
+	u32 hwstrap1_sec3;	/* 0x02C */
+	u32 rsv_0x30[8];		/* 0x030 ~ 0x4C */
+	u32 sysrest_log1;		/* 0x050 */
+	u32 sysrest_log1_sec1;	/* 0x054 */
+	u32 sysrest_log1_sec2;	/* 0x058 */
+	u32 sysrest_log1_sec3;	/* 0x05C */
+	u32 sysrest_log2;		/* 0x060 */
+	u32 sysrest_log2_sec1;	/* 0x064 */
+	u32 sysrest_log2_sec2;	/* 0x068 */
+	u32 sysrest_log2_sec3;	/* 0x06C */
+	u32 sysrest_log3;		/* 0x070 */
+	u32 sysrest_log3_sec1; /* 0x074 */
+	u32 sysrest_log3_sec2; /* 0x078 */
+	u32 sysrest_log3_sec3; /* 0x07C */
+	u32 rsv_0x80[8];		/* 0x080 ~ 0x9C */
+	u32 probe_sig_select;	/* 0x0A0 */
+	u32 probe_sig_enable1;	/* 0x0A4 */
+	u32 probe_sig_enable2; /* 0x0A8 */
+	u32 uart_dbg_rate;		/* 0x0AC */
+	u32 rsv_0xB0[4];		/* 0x0B0 ~ 0xBC*/
+	u32 misc;			/* 0x0C0 */
+	u32 rsv_0xC4;		/* 0x0C4 */
+	u32 debug_ctrl;		/* 0x0C8 */
+	u32 rsv_0xCC[5];		/* 0x0CC ~ 0x0DC */
+	u32 free_counter_read_low;		/* 0x0E0 */
+	u32 free_counter_read_high;	/* 0x0E4 */
+	u32 rsv_0xE8[2];		/* 0x0E8 ~ 0x0EC */
+	u32 random_num_ctrl;	/* 0x0F0 */
+	u32 random_num_data;	/* 0x0F4 */
+	u32 rsv_0xF8[10];		/* 0x0F8 ~ 0x11C */
+	u32 ssp_ctrl_1;		/* 0x120 */
+	u32 ssp_ctrl_2;		/* 0x124 */
+	u32 ssp_ctrl_3;		/* 0x128 */
+	u32 ssp_ctrl_4;		/* 0x12C */
+	u32 ssp_ctrl_5;		/* 0x130 */
+	u32 ssp_ctrl_6;		/* 0x134 */
+	u32 ssp_ctrl_7;		/* 0x138 */
+	u32 rsv_0x13c[1];		/* 0x13C */
+	u32 ssp_remap0_base;	/* 0x140 */
+	u32 ssp_remap0_size;	/* 0x144 */
+	u32 ssp_remap1_base;	/* 0x148 */
+	u32 ssp_remap1_size;	/* 0x14c */
+	u32 ssp_remap2_base;	/* 0x150 */
+	u32 ssp_remap2_size;	/* 0x154 */
+	u32 rsv_0x158[2];		/* 0x158 ~ 0x15C */
+	u32 tsp_ctrl_1;		/* 0x160 */
+	u32 rsv_0x164[1];		/* 0x164 */
+	u32 tsp_ctrl_3;		/* 0x168 */
+	u32 tsp_ctrl_4;		/* 0x16C */
+	u32 tsp_ctrl_5;		/* 0x170 */
+	u32 tsp_ctrl_6;		/* 0x174 */
+	u32 tsp_ctrl_7;		/* 0x178 */
+	u32 rsv_0x17c[6];		/* 0x17C ~ 0x190 */
+	u32 tsp_remap_size;	/* 0x194 */
+	u32 rsv_0x198[26];		/* 0x198 ~ 0x1FC */
+	u32 modrst1_ctrl;		/* 0x200 */
+	u32 modrst1_clr;		/* 0x204 */
+	u32 rsv_0x208[2];		/* 0x208 ~ 0x20C */
+	u32 modrst1_lock;		/* 0x210 */
+	u32 modrst1_prot1;		/* 0x214 */
+	u32 modrst1_prot2;		/* 0x218 */
+	u32 modrst1_prot3;		/* 0x21C */
+	u32 modrst2_ctrl;		/* 0x220 */
+	u32 modrst2_clr;		/* 0x224 */
+	u32 rsv_0x228[2];		/* 0x228 ~ 0x22C */
+	u32 modrst2_lock;		/* 0x230 */
+	u32 modrst2_prot1;		/* 0x234 */
+	u32 modrst2_prot2;		/* 0x238 */
+	u32 modrst2_prot3;		/* 0x23C */
+	u32 clkgate_ctrl;		/* 0x240 */
+	u32 clkgate_clr;		/* 0x244 */
+	u32 rsv_0x248[2];		/* 0x248 */
+	u32 clkgate_lock;		/* 0x250 */
+	u32 clkgate_secure1;	/* 0x254 */
+	u32 clkgate_secure2;	/* 0x258 */
+	u32 clkgate_secure3;	/* 0x25c */
+	u32 rsv_0x260[8];		/* 0x260 */
+	u32 clk_sel1;		/* 0x280 */
+	u32 clk_sel2;		/* 0x284 */
+	u32 clk_sel3;		/* 0x288 */
+	u32 rsv_0x28c;		/* 0x28c */
+	u32 clk_sel1_lock;		/* 0x290 */
+	u32 clk_sel2_lock;		/* 0x294 */
+	u32 clk_sel3_lock;		/* 0x298 */
+	u32 rsv_0x29c;		/* 0x29c */
+	u32 clk_sel1_secure1;	/* 0x2a0 */
+	u32 clk_sel1_secure2;	/* 0x2a4 */
+	u32 clk_sel1_secure3;	/* 0x2a8 */
+	u32 rsv_0x2ac;		/* 0x2ac */
+	u32 clk_sel2_secure1;	/* 0x2b0 */
+	u32 clk_sel2_secure2;	/* 0x2b4 */
+	u32 clk_sel2_secure3;	/* 0x2b8 */
+	u32 rsv_0x2bc;		/* 0x2bc */
+	u32 clk_sel3_secure1;	/* 0x2c0 */
+	u32 clk_sel3_secure2;	/* 0x2c4 */
+	u32 clk_sel3_secure3;	/* 0x2c8 */
+	u32 rsv_0x2cc[9];		/* 0x2cc */
+	u32 extrst_sel;		/* 0x2f0 */
+	u32 rsv_0x2f4[3];		/* 0x2f4 */
+	u32 hpll;			/* 0x300 */
+	u32 hpll_ext;		/* 0x304 */
+	u32 dpll;			/* 0x308 */
+	u32 dpll_ext;		/* 0x30C */
+	u32 mpll;			/* 0x310 */
+	u32 mpll_ext;		/* 0x314 */
+	u32 rsv_0x318[2];		/* 0x318 ~ 0x31C */
+	u32 d1clk_para;		/* 0x320 */
+	u32 rsv_0x324[3];		/* 0x324 ~ 0x32C */
+	u32 d2clk_para;		/* 0x330 */
+	u32 rsv_0x334[3];		/* 0x334 ~ 0x33C */
+	u32 crt1clk_para;		/* 0x340 */
+	u32 rsv_0x344[3];		/* 0x344 ~ 0x34C */
+	u32 crt2clk_para;		/* 0x350 */
+	u32 rsv_0x354[3];		/* 0x354 ~ 0x35C */
+	u32 mphyclk_para;		/* 0x360 */
+	u32 rsv_0x364[7];		/* 0x364 ~ 0x37C */
+	u32 clkduty_meas_ctrl;	/* 0x380 */
+	u32 clkduty1;		/* 0x384 */
+	u32 clkduty2;		/* 0x368 */
+	u32 clkduty_meas_res;	/* 0x38c */
+	u32 rsv_0x390[4];		/* 0x390 ~ 0x39C */
+	u32 freq_counter_ctrl;	/* 0x3a0 */
+	u32 freq_counter_cmp;	/* 0x3a4 */
+	u32 prog_delay_ring_ctrl0;	/* 0x3a8 */
+	u32 prog_delay_ring_ctrl1;	/* 0x3ac */
+	u32 freq_counter_readback;	/* 0x3b0 */
+	u32 rsv_0x3b4[19];		/* 0x3b4 */
+	u32 pinmux1;		/* 0x400 */
+	u32 pinmux2;		/* 0x404 */
+	u32 pinmux3;		/* 0x408 */
+	u32 rsv_0x40c;		/* 0x40C */
+	u32 pinmux4;		/* 0x410 */
+	u32 vga_func_ctrl;		/* 0x414 */
+	u32 rsv_0x418[2];	/* 0x418 */
+	u32 pinmux_lock0;	/* 0x420 */
+	u32 pinmux_lock1;	/* 0x424 */
+	u32 pinmux_lock2;	/* 0x428 */
+	u32 rsv_0x42c;
+	u32 pinmux_lock3;	/* 0x430 */
+	u32 pinmux_lock4;	/* 0x434 */
+	u32 rsv_0x438[18];
+	u32 gpio18d0_ioctrl;	/* 0x480 */
+	u32 gpio18d1_ioctrl;	/* 0x484 */
+	u32 gpio18d2_ioctrl;	/* 0x488 */
+	u32 gpio18d3_ioctrl;	/* 0x48c */
+	u32 gpio18d4_ioctrl;	/* 0x490 */
+	u32 gpio18d5_ioctrl;	/* 0x494 */
+	u32 gpio18d6_ioctrl;	/* 0x498 */
+	u32 gpio18d7_ioctrl;	/* 0x49c */
+	u32 gpio18e0_ioctrl;	/* 0x4a0 */
+	u32 gpio18e1_ioctrl;	/* 0x4a4 */
+	u32 gpio18e2_ioctrl;	/* 0x4a8 */
+	u32 gpio18e3_ioctrl;	/* 0x4ac */
+	u32 jtag_ioctrl;	/* 0x4b0 */
+	u32 uart_ioctrl;	/* 0x4b4 */
+	u32 misc_ioctrl;	/* 0x4b8 */
+	u32 rsv_0x4bc[17];		/* 0x4bc ~ 0x4fc */
+	u32 pinmux_seucre0_0;	/* 0x500 */
+	u32 pinmux_seucre0_1;	/* 0x504 */
+	u32 pinmux_seucre0_2;	/* 0x508 */
+	u32 rsv_0x50c;
+	u32 pinmux_seucre0_3;	/* 0x510 */
+	u32 pinmux_seucre0_4;	/* 0x514 */
+	u32 rsv_0x518[58];
+	u32 pinmux_seucre1_0;	/* 0x600 */
+	u32 pinmux_seucre1_1;	/* 0x604 */
+	u32 pinmux_seucre1_2;	/* 0x608 */
+	u32 rsv_0x60c;
+	u32 pinmux_seucre1_3;	/* 0x610 */
+	u32 pinmux_seucre1_4;	/* 0x614 */
+	u32 rsv_0x618[58];
+	u32 pinmux_seucre2_0;	/* 0x700 */
+	u32 pinmux_seucre2_1;	/* 0x704 */
+	u32 pinmux_seucre2_2;	/* 0x708 */
+	u32 rsv_0x70c;
+	u32 pinmux_seucre2_3;	/* 0x710 */
+	u32 pinmux_seucre2s_4;	/* 0x714 */
+	u32 rsv_0x718[26];
+	u32 cpu_scratch[96];	/* 0x780 ~ 0x8FC */
+	u32 vga0_scratch1[4];	/* 0x900 ~ 0x90C */
+	u32 vga1_scratch1[4];	/* 0x910 ~ 0x91C */
+	u32 vga0_scratch2[8];	/* 0x920 ~ 0x93C */
+	u32 vga1_scratch2[8];	/* 0x940 ~ 0x95C */
+	u32 pci_cfg1[3];		/* 0x960 ~ 0x968 */
+	u32 rsv_0x96c;		/* 0x96C */
+	u32 pcie_cfg1;		/* 0x970 */
+	u32 mmio_decode1;		/* 0x974 */
+	u32 reloc_ctrl_decode1[2];	/* 0x978 ~ 0x97C */
+	u32 rsv_0x980[4];		/* 0x980 ~ 0x98C */
+	u32 mbox_decode1;		/* 0x990 */
+	u32 shared_sram_decode1[2];/* 0x994 ~ 0x998 */
+	u32 rsv_0x99c;		/* 0x99C */
+	u32 pci_cfg2[3];		/* 0x9A0 ~ 0x9A8 */
+	u32 rsv_0x9ac;		/* 0x9AC */
+	u32 pcie_cfg2;		/* 0x9B0 */
+	u32 mmio_decode2;		/* 0x9B4 */
+	u32 reloc_ctrl_decode2[2];	/* 0x9B8 ~ 0x9BC */
+	u32 rsv_0x9c0[4];		/* 0x9C0 ~ 0x9CC */
+	u32 mbox_decode2;		/* 0x9D0 */
+	u32 shared_sram_decode2[2];/* 0x9D4 ~ 0x9D8 */
+	u32 rsv_0x9dc[9];		/* 0x9DC ~ 0x9FC */
+	u32 pci0_misc[32];		/* 0xA00 ~ 0xA7C */
+	u32 pci1_misc[32];		/* 0xA80 ~ 0xAFC */
+};
+
+struct ast2700_scu1 {
+	u32 chip_id1;		/* 0x000 */
+	u32 rsv_0x04[3];		/* 0x004 ~ 0x00C */
+	u32 hwstrap1;		/* 0x010 */
+	u32 hwstrap1_clr;		/* 0x014 */
+	u32 rsv_0x18[2];		/* 0x018 ~ 0x01C */
+	u32 hwstrap1_lock;		/* 0x020 */
+	u32 hwstrap1_sec1;	/* 0x024 */
+	u32 hwstrap1_sec2;	/* 0x028 */
+	u32 hwstrap1_sec3;	/* 0x02C */
+	u32 hwstrap2;		/* 0x030 */
+	u32 hwstrap2_clr;		/* 0x034 */
+	u32 rsv_0x38[2];		/* 0x038 ~ 0x03C */
+	u32 hwstrap2_lock;		/* 0x040 */
+	u32 hwstrap2_sec1;	/* 0x044 */
+	u32 hwstrap2_sec2;	/* 0x048 */
+	u32 hwstrap2_sec3;	/* 0x04C */
+	u32 sysrest_log1;		/* 0x050 */
+	u32 sysrest_log1_sec1;	/* 0x054 */
+	u32 sysrest_log1_sec2;	/* 0x058 */
+	u32 sysrest_log1_sec3;	/* 0x05C */
+	u32 sysrest_log2;		/* 0x060 */
+	u32 sysrest_log2_sec1;	/* 0x064 */
+	u32 sysrest_log2_sec2;	/* 0x068 */
+	u32 sysrest_log2_sec3;	/* 0x06C */
+	u32 sysrest_log3;		/* 0x070 */
+	u32 sysrest_log3_sec1; /* 0x074 */
+	u32 sysrest_log3_sec2; /* 0x078 */
+	u32 sysrest_log3_sec3; /* 0x07C */
+	u32 sysrest_log4;		/* 0x080 */
+	u32 sysrest_log4_sec1; /* 0x084 */
+	u32 sysrest_log4_sec2; /* 0x088 */
+	u32 sysrest_log4_sec3; /* 0x08C */
+	u32 rsv_0x90[7];		/* 0x090 ~ 0xA8 */
+	u32 uart_dbg_rate;		/* 0x0AC */
+	u32 rsv_0xB0[4];		/* 0x0B0 ~ 0xBC*/
+	u32 misc;			/* 0x0C0 */
+	u32 rsv_0xC4;		/* 0x0C4 */
+	u32 debug_ctrl;		/* 0x0C8 */
+	u32 rsv_0xCC;		/* 0x0CC */
+	u32 dac_ctrl;		/* 0x0D0 */
+	u32 dac_crc_ctrl;		/* 0x0D4 */
+	u32 rsv_0xD8[2];		/* 0x0D8 ~ 0x0DC */
+	u32 video_input_ctrl;		/* 0x0E0 */
+	u32 rsv_0xE4[3];		/* 0x0E4 ~ 0x0EC */
+	u32 random_num_ctrl;	/* 0x0F0 */
+	u32 random_num_data;	/* 0x0F4 */
+	u32 rsv_0xF0[2];		/* 0x0F8 ~ 0x0FC */
+	u32 rsv_0x100[32];		/* 0x100 ~ 0x17C */
+	u32 scratch[32];		/* 0x180 ~ 0x1FC */
+	u32 modrst1_ctrl;		/* 0x200 */
+	u32 modrst1_clr;		/* 0x204 */
+	u32 rsv_0x208[2];		/* 0x208 ~ 0x20C */
+	u32 modrst_lock1;		/* 0x210 */
+	u32 modrst1_sec1;		/* 0x214 */
+	u32 modrst1_sec2;		/* 0x218 */
+	u32 modrst1_sec3;		/* 0x21C */
+	u32 modrst2_ctrl;		/* 0x220 */
+	u32 modrst2_clr;		/* 0x224 */
+	u32 rsv_0x228[2];		/* 0x228 ~ 0x22C */
+	u32 modrst2_lock;		/* 0x230 */
+	u32 modrst2_prot1;		/* 0x234 */
+	u32 modrst2_prot2;		/* 0x238 */
+	u32 modrst2_prot3;		/* 0x23C */
+	u32 clkgate_ctrl1;		/* 0x240 */
+	u32 clkgate_clr1;		/* 0x244 */
+	u32 rsv_0x248[2];		/* 0x248 */
+	u32 clkgate_lock1;		/* 0x250 */
+	u32 clkgate_secure11;		/* 0x254 */
+	u32 clkgate_secure12;		/* 0x258 */
+	u32 clkgate_secure13;		/* 0x25c */
+	u32 clkgate_ctrl2;		/* 0x260 */
+	u32 clkgate_clr2;		/* 0x264 */
+	u32 rsv_0x268[2];		/* 0x268 */
+	u32 clkgate_lock2;		/* 0x270 */
+	u32 clkgate_secure21;		/* 0x274 */
+	u32 clkgate_secure22;		/* 0x278 */
+	u32 clkgate_secure23;		/* 0x27c */
+	u32 clk_sel1;		/* 0x280 */
+	u32 clk_sel2;		/* 0x284 */
+	u32 rsv_0x288[2];		/* 0x288 */
+	u32 clk_sel1_lock;		/* 0x290 */
+	u32 clk_sel2_lock;		/* 0x294 */
+	u32 rsv_0x298[2];		/* 0x298 */
+	u32 clk_sel1_secure1;		/* 0x2a0 */
+	u32 clk_sel1_secure2;		/* 0x2a4 */
+	u32 rsv_0x2a8[2];		/* 0x2a8 */
+	u32 clk_sel2_secure1;		/* 0x2b0 */
+	u32 clk_sel2_secure2;		/* 0x2b4 */
+	u32 rsv_0x2b8[2];		/* 0x2b8 */
+	u32 clk_sel3_secure1;		/* 0x2c0 */
+	u32 clk_sel3_secure2;		/* 0x2c4 */
+	u32 rsv_0x2c8[10];		/* 0x2c8 */
+	u32 extrst_sel1;		/* 0x2f0 */
+	u32 extrst_sel2;		/* 0x2f4 */
+	u32 rsv_0x2f8[2];		/* 0x2f8 */
+	u32 hpll;			/* 0x300 */
+	u32 hpll_ext;		/* 0x304 */
+	u32 rsv_0x308[2];		/* 0x308 ~ 0x30C */
+	u32 apll;			/* 0x310 */
+	u32 apll_ext;		/* 0x314 */
+	u32 rsv_0x318[2];		/* 0x318 ~ 0x31C */
+	u32 dpll;			/* 0x320 */
+	u32 dpll_ext;		/* 0x324 */
+	u32 rsv_0x328[2];		/* 0x328 ~ 0x32C */
+	u32 uxclk_ctrl;		/* 0x330 */
+	u32 huxclk_ctrl;		/* 0x334 */
+	u32 rsv_0x338[18];		/* 0x338 ~ 0x37C */
+	u32 clkduty_meas_ctrl;	/* 0x380 */
+	u32 clkduty1;		/* 0x384 */
+	u32 clkduty2;		/* 0x388 */
+	u32 rsv_0x38c;		/* 0x38c */
+	u32 mac_delay;		/* 0x390 */
+	u32 mac_100m_delay;		/* 0x394 */
+	u32 mac_10m_delay;		/* 0x398 */
+	u32 rsv_0x39c;		/* 0x39c */
+	u32 freq_counter_ctrl;	/* 0x3a0 */
+	u32 freq_counter_cmp;	/* 0x3a4 */
+	u32 rsv_0x3a8[2];		/* 0x3a8 ~ 0x3aC */
+	u32 usb_ctrl;		/* 0x3b0 */
+	u32 usb_lock;		/* 0x3b4 */
+	u32 usb_secure1;	/* 0x3b8 */
+	u32 usb_secure2;	/* 0x3bc */
+	u32 usb_secure3;	/* 0x3c0 */
+	u32 rsv_0x3c4[15];	/* 0x3c4 ~ 0x3fc */
+	u32 pinumx1;		/* 0x400 */
+	u32 pinumx2;		/* 0x404 */
+	u32 pinumx3;		/* 0x408 */
+	u32 pinumx4;		/* 0x40c */
+	u32 pinumx5;		/* 0x410 */
+	u32 pinumx6;		/* 0x414 */
+	u32 pinumx7;		/* 0x418 */
+	u32 pinumx8;		/* 0x41c */
+	u32 pinumx9;		/* 0x420 */
+	u32 pinumx10;		/* 0x424 */
+	u32 pinumx11;		/* 0x428 */
+	u32 pinumx12;		/* 0x42c */
+	u32 pinumx13;		/* 0x430 */
+	u32 pinumx14;		/* 0x434 */
+	u32 pinumx15;		/* 0x438 */
+	u32 pinumx16;		/* 0x43c */
+	u32 pinumx17;		/* 0x440 */
+	u32 pinumx18;		/* 0x444 */
+	u32 pinumx19;		/* 0x448 */
+	u32 pinumx20;		/* 0x44c */
+	u32 pinumx21;		/* 0x450 */
+	u32 pinumx22;		/* 0x454 */
+	u32 pinumx23;		/* 0x458 */
+	u32 pinumx24;		/* 0x45c */
+	u32 pinumx25;		/* 0x460 */
+	u32 pinumx26;		/* 0x464 */
+	u32 pinumx27;		/* 0x468 */
+	u32 rsv_0x46c[4];	/* 0x46c ~ 0x478 */
+	u32 pinumx31;		/* 0x47c */
+	u32 pull_down_dis[8];	/* 0x480 ~ 0x49c */
+	u32 pin_conf;		/* 0x4a0 */
+	u32 rsv_0x4a4[7];	/* 0x4a4 ~ 0x4bc */
+	u32 io_driving0;	/* 0x4c0 */
+	u32 io_driving1;	/* 0x4c4 */
+	u32 io_driving2;	/* 0x4c8 */
+	u32 io_driving3;	/* 0x4cc */
+	u32 io_driving4;	/* 0x4d0 */
+	u32 io_driving5;	/* 0x4d4 */
+	u32 io_driving6;	/* 0x4d8 */
+	u32 io_driving7;	/* 0x4dc */
+	u32 io_driving8;	/* 0x4e0 */
+};
+
+#endif
+#endif
diff --git a/arch/arm/include/asm/arch-aspeed/sdram.h b/arch/arm/include/asm/arch-aspeed/sdram.h
new file mode 100644
index 00000000000..daf48dd6ed1
--- /dev/null
+++ b/arch/arm/include/asm/arch-aspeed/sdram.h
@@ -0,0 +1,137 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (c) Aspeed Technology Inc.
+ */
+#ifndef __ASM_AST2700_SDRAM_H__
+#define __ASM_AST2700_SDRAM_H__
+
+struct sdrammc_regs {
+	u32 prot_key;
+	u32 intr_status;
+	u32 intr_clear;
+	u32 intr_mask;
+	u32 mcfg;
+	u32 mctl;
+	u32 msts;
+	u32 error_status;
+	u32 actime1;
+	u32 actime2;
+	u32 actime3;
+	u32 actime4;
+	u32 actime5;
+	u32 actime6;
+	u32 actime7;
+	u32 dfi_timing;
+	u32 dcfg;
+	u32 dctl;
+	u32 mrctl;
+	u32 mrwr;
+	u32 mrrd;
+	u32 mr01;
+	u32 mr23;
+	u32 mr45;
+	u32 mr67;
+	u32 refctl;
+	u32 refmng_ctl;
+	u32 refsts;
+	u32 zqctl;
+	u32 ecc_addr_range;
+	u32 ecc_failure_status;
+	u32 ecc_failure_addr;
+	u32 ecc_test_control;
+	u32 ecc_test_status;
+	u32 arbctl;
+	u32 enccfg;
+	u32 protect_lock_set;
+	u32 protect_lock_status;
+	u32 protect_lock_reset;
+	u32 enc_min_addr;
+	u32 enc_max_addr;
+	u32 enc_key[4];
+	u32 enc_iv[3];
+	u32 bistcfg;
+	u32 bist_addr;
+	u32 bist_size;
+	u32 bist_patt;
+	u32 bist_res;
+	u32 bist_fail_addr;
+	u32 bist_fail_data[4];
+	u32 reserved2[2];
+	u32 debug_control;
+	u32 debug_status;
+	u32 phy_intf_status;
+	u32 testcfg;
+	u32 gfmcfg;
+	u32 gfm0ctl;
+	u32 gfm1ctl;
+	u32 reserved3[0xf8];
+};
+
+#define DRAMC_UNLK_KEY	0x1688a8a8
+
+/* offset 0x04 */
+#define DRAMC_IRQSTA_PWRCTL_ERR			BIT(16)
+#define DRAMC_IRQSTA_PHY_ERR			BIT(15)
+#define DRAMC_IRQSTA_LOWPOWER_DONE		BIT(12)
+#define DRAMC_IRQSTA_FREQ_CHG_DONE		BIT(11)
+#define DRAMC_IRQSTA_REF_DONE			BIT(10)
+#define DRAMC_IRQSTA_ZQ_DONE			BIT(9)
+#define DRAMC_IRQSTA_BIST_DONE			BIT(8)
+#define DRAMC_IRQSTA_ECC_RCVY_ERR		BIT(5)
+#define DRAMC_IRQSTA_ECC_ERR			BIT(4)
+#define DRAMC_IRQSTA_PROT_ERR			BIT(3)
+#define DRAMC_IRQSTA_OVERSZ_ERR			BIT(2)
+#define DRAMC_IRQSTA_MR_DONE			BIT(1)
+#define DRAMC_IRQSTA_PHY_INIT_DONE		BIT(0)
+
+/* offset 0x14 */
+#define DRAMC_MCTL_WB_SOFT_RESET		BIT(24)
+#define DRAMC_MCTL_PHY_CLK_DIS			BIT(18)
+#define DRAMC_MCTL_PHY_RESET			BIT(17)
+#define DRAMC_MCTL_PHY_POWER_ON			BIT(16)
+#define DRAMC_MCTL_FREQ_CHG_START		BIT(3)
+#define DRAMC_MCTL_PHY_LOWPOWER_START		BIT(2)
+#define DRAMC_MCTL_SELF_REF_START		BIT(1)
+#define DRAMC_MCTL_PHY_INIT_START		BIT(0)
+
+/* offset 0x40 */
+#define DRAMC_DFICFG_WD_POL			BIT(18)
+#define DRAMC_DFICFG_CKE_OUT			BIT(17)
+#define DRAMC_DFICFG_RESET			BIT(16)
+
+/* offset 0x48 */
+#define DRAMC_MRCTL_ERR_STATUS			BIT(31)
+#define DRAMC_MRCTL_READY_STATUS		BIT(30)
+#define DRAMC_MRCTL_MR_ADDR			BIT(8)
+#define DRAMC_MRCTL_CMD_DLL_RST			BIT(7)
+#define DRAMC_MRCTL_CMD_DQ_SEL			BIT(6)
+#define DRAMC_MRCTL_CMD_TYPE			BIT(2)
+#define DRAMC_MRCTL_CMD_WR_CTL			BIT(1)
+#define DRAMC_MRCTL_CMD_START			BIT(0)
+
+/* offset 0xC0 */
+#define DRAMC_BISTRES_RUNNING			BIT(10)
+#define DRAMC_BISTRES_FAIL			BIT(9)
+#define DRAMC_BISTRES_DONE			BIT(8)
+#define DRAMC_BISTCFG_INIT_MODE			BIT(7)
+#define DRAMC_BISTCFG_PMODE			GENMASK(6, 4)
+#define DRAMC_BISTCFG_BMODE			GENMASK(3, 2)
+#define DRAMC_BISTCFG_ENABLE			BIT(1)
+#define DRAMC_BISTCFG_START			BIT(0)
+#define BIST_PMODE_CRC				(3)
+#define BIST_BMODE_RW_SWITCH			(3)
+
+/* DRAMC048 MR Control Register */
+#define MR_TYPE_SHIFT				2
+#define MR_RW					(0 << MR_TYPE_SHIFT)
+#define MR_MPC					BIT(2)
+#define MR_VREFCS				(2 << MR_TYPE_SHIFT)
+#define MR_VREFCA				(3 << MR_TYPE_SHIFT)
+#define MR_ADDRESS_SHIFT			8
+#define MR_ADDR(n)				(((n) << MR_ADDRESS_SHIFT) | DRAMC_MRCTL_CMD_WR_CTL)
+#define MR_NUM_SHIFT				4
+#define MR_NUM(n)				((n) << MR_NUM_SHIFT)
+#define MR_DLL_RESET				BIT(7)
+#define MR_1T_MODE				BIT(16)
+
+#endif
diff --git a/arch/arm/mach-aspeed/Kconfig b/arch/arm/mach-aspeed/Kconfig
index c88b1e59366..f4b038ebd9e 100644
--- a/arch/arm/mach-aspeed/Kconfig
+++ b/arch/arm/mach-aspeed/Kconfig
@@ -36,9 +36,20 @@ config ASPEED_AST2600
 	  It is used as Board Management Controller on many server boards,
 	  which is enabled by support of LPC and eSPI peripherals.
 
+config ASPEED_AST2700
+	bool "Support Aspeed AST2700 SoC"
+	select ARM64
+	select SYS_ARCH_TIMER
+	help
+	  Support for the Aspeed AST2700, an arm64 (Cortex-A35) Baseboard
+	  Management Controller (BMC) SoC. This is the 8th-generation BMC
+	  SoC family from Aspeed and features a dual-die architecture
+	  (CPU die + I/O die) connected via an internal coherent bus.
+
 endchoice
 
 source "arch/arm/mach-aspeed/ast2500/Kconfig"
 source "arch/arm/mach-aspeed/ast2600/Kconfig"
+source "arch/arm/mach-aspeed/ast2700/Kconfig"
 
 endif
diff --git a/arch/arm/mach-aspeed/Makefile b/arch/arm/mach-aspeed/Makefile
index 42599c125b8..d0b4eb74c6c 100644
--- a/arch/arm/mach-aspeed/Makefile
+++ b/arch/arm/mach-aspeed/Makefile
@@ -5,3 +5,4 @@
 obj-$(CONFIG_ARCH_ASPEED) += ast_wdt.o
 obj-$(CONFIG_ASPEED_AST2500) += ast2500/
 obj-$(CONFIG_ASPEED_AST2600) += ast2600/
+obj-$(CONFIG_ASPEED_AST2700) += ast2700/
diff --git a/arch/arm/mach-aspeed/ast2700/Kconfig b/arch/arm/mach-aspeed/ast2700/Kconfig
new file mode 100644
index 00000000000..3dd68db76db
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/Kconfig
@@ -0,0 +1,36 @@
+if ASPEED_AST2700
+
+config SYS_CPU
+	default "armv8"
+
+config SPI_KERNEL_FIT_ADDR
+	hex "SPI address of kernel FIT image"
+	default 0x100420000
+	help
+	  Address in the SPI flash where the kernel FIT image is stored.
+	  Used by the bootspi command to load and boot the kernel image
+	  from the SPI flash on AST2700 platforms.
+
+choice
+	prompt "AST2700 board select"
+	depends on ASPEED_AST2700
+	default TARGET_EVB_AST2700
+	help
+	  Select the AST2700 board model. Each board option configures
+	  the board-specific Kconfig, defaults and devicetree.
+
+config TARGET_EVB_AST2700
+	bool "EVB-AST2700"
+	depends on ASPEED_AST2700
+	select ARCH_MISC_INIT
+	help
+	  EVB-AST2700 is Aspeed evaluation board for AST2700A0 chip.
+	  It has 512M of RAM, 32M of SPI flash, two Ethernet ports,
+	  4 Serial ports, 4 USB ports, VGA port, PCIe, SD card slot,
+	  20 pin JTAG, pinouts for 14 I2Cs, 3 SPIs and eSPI, 8 PWMs.
+
+endchoice
+
+source "board/aspeed/evb_ast2700/Kconfig"
+
+endif
diff --git a/arch/arm/mach-aspeed/ast2700/Makefile b/arch/arm/mach-aspeed/ast2700/Makefile
new file mode 100644
index 00000000000..38bd52f3d5d
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/Makefile
@@ -0,0 +1,2 @@
+obj-y   += lowlevel_init.o board_common.o arm64-mmu.o platform.o
+obj-$(CONFIG_DISPLAY_CPUINFO) += cpu-info.o
diff --git a/arch/arm/mach-aspeed/ast2700/arm64-mmu.c b/arch/arm/mach-aspeed/ast2700/arm64-mmu.c
new file mode 100644
index 00000000000..a068e6ede97
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/arm64-mmu.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) ASPEED Technology Inc.
+ */
+
+#include <dm.h>
+#include <asm/armv8/mmu.h>
+
+static struct mm_region aspeed2700_mem_map[] = {
+	{
+		.virt =         0x0UL,
+		.phys =         0x0UL,
+		.size =  0x40000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN,
+	},
+	{
+		.virt =  0x40000000UL,
+		.phys =  0x40000000UL,
+		.size = 0x2C0000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE,
+	},
+	{
+		.virt = 0x400000000UL,
+		.phys = 0x400000000UL,
+		.size = 0x200000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) |
+			 PTE_BLOCK_INNER_SHARE,
+	},
+	{
+		/* List terminator */
+		0,
+	}
+};
+
+struct mm_region *mem_map = aspeed2700_mem_map;
+
+u64 get_page_table_size(void)
+{
+	return 0x80000;
+}
diff --git a/arch/arm/mach-aspeed/ast2700/board_common.c b/arch/arm/mach-aspeed/ast2700/board_common.c
new file mode 100644
index 00000000000..6d2160bbca4
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/board_common.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) ASPEED Technology Inc.
+ */
+
+#include <dm.h>
+#include <ram.h>
+#include <init.h>
+#include <timer.h>
+#include <asm/io.h>
+#include <asm/arch/timer.h>
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/err.h>
+#include <dm/uclass.h>
+#include <asm/arch-aspeed/scu_ast2700.h>
+
+#define AHBC_GROUP(x)				(0x40 * (x))
+#define AHBC_HREADY_WAIT_CNT_REG		0x34
+#define   AHBC_HREADY_WAIT_CNT_MAX		0x3f
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	int ret;
+	struct udevice *dev;
+	struct ram_info ram;
+
+	ret = uclass_get_device(UCLASS_RAM, 0, &dev);
+	if (ret) {
+		printf("cannot get DRAM driver\n");
+		debug("cannot get DRAM driver\n");
+		return ret;
+	}
+
+	ret = ram_get_info(dev, &ram);
+	if (ret) {
+		debug("cannot get DRAM information\n");
+		return ret;
+	}
+
+	gd->ram_size = ram.size;
+
+	return 0;
+}
+
+static void ahbc_init(void)
+{
+	u32 reg_val;
+	int i;
+
+	reg_val = readl(ASPEED_CPU_REVISION_ID);
+	if (FIELD_GET(SCU_CPU_REVISION_ID_HW, reg_val))
+		return;
+
+	/* CPU-die AHBC timeout counter */
+	for (i = 0; i < 4; i++)
+		writel(AHBC_HREADY_WAIT_CNT_MAX,
+		       (void *)ASPEED_CPU_AHBC_BASE + AHBC_GROUP(i) + AHBC_HREADY_WAIT_CNT_REG);
+
+	/* IO-die AHBC timeout counter */
+	for (i = 0; i < 8; i++)
+		writel(AHBC_HREADY_WAIT_CNT_MAX,
+		       (void *)ASPEED_IO_AHBC_BASE + AHBC_GROUP(i) + AHBC_HREADY_WAIT_CNT_REG);
+}
+
+int board_init(void)
+{
+	struct udevice *dev;
+	int i = 0;
+	int ret;
+
+	ahbc_init();
+
+	/*
+	 * Loop over all MISC uclass drivers to call the comphy code
+	 * and init all CP110 devices enabled in the DT
+	 */
+	while (1) {
+		/* Call the comphy code via the MISC uclass driver */
+		ret = uclass_get_device(UCLASS_MISC, i++, &dev);
+
+		/* We're done, once no further CP110 device is found */
+		if (ret)
+			break;
+	}
+
+	return 0;
+}
diff --git a/arch/arm/mach-aspeed/ast2700/cpu-info.c b/arch/arm/mach-aspeed/ast2700/cpu-info.c
new file mode 100644
index 00000000000..7f29c4d8c33
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/cpu-info.c
@@ -0,0 +1,114 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) ASPEED Technology Inc.
+ * Ryan Chen <[email protected]>
+ */
+
+#include <command.h>
+#include <asm/io.h>
+#include <asm/arch/platform.h>
+#include <asm/arch/scu_ast2700.h>
+
+/* SoC mapping Table */
+#define SOC_ID(str, rev) { .name = str, .rev_id = rev, }
+
+struct soc_id {
+	const char *name;
+	u64 rev_id;
+};
+
+static struct soc_id soc_map_table[] = {
+	SOC_ID("AST2750-A0", 0x0600000306000003),
+	SOC_ID("AST2700-A0", 0x0600010306000103),
+	SOC_ID("AST2720-A0", 0x0600020306000203),
+	SOC_ID("AST2750-A1", 0x0601000306010003),
+	SOC_ID("AST2700-A1", 0x0601010306010103),
+	SOC_ID("AST2720-A1", 0x0601020306010203),
+	SOC_ID("AST2750-A2", 0x0602000306020003),
+	SOC_ID("AST2700-A2", 0x0602010306020103),
+	SOC_ID("AST2720-A2", 0x0602020306020203),
+};
+
+void ast2700_print_soc_id(void)
+{
+	int i;
+	u64 rev_id;
+
+	rev_id = readl(ASPEED_CPU_REVISION_ID);
+	rev_id = ((u64)readl(ASPEED_IO_REVISION_ID) << 32) | rev_id;
+
+	for (i = 0; i < ARRAY_SIZE(soc_map_table); i++) {
+		if (rev_id == soc_map_table[i].rev_id)
+			break;
+	}
+	if (i == ARRAY_SIZE(soc_map_table))
+		printf("Unknown-SOC: %llx\n", rev_id);
+	else
+		printf("SOC: %4s\n", soc_map_table[i].name);
+}
+
+#define SYS_DRAM_ECCRST	BIT(3)
+#define SYS_ABRRST		BIT(2)
+#define SYS_EXTRST		BIT(1)
+#define SYS_SRST		BIT(0)
+
+#define WDT_RST_BIT_MASK(s)	(GENMASK(3, 0) << (s))
+#define BIT_WDT_FULL(s)		(BIT(0) << (s))
+#define BIT_WDT_ARM(s)		(BIT(1) << (s))
+#define BIT_WDT_SOC(s)		(BIT(2) << (s))
+#define BIT_WDT_SW(s)		(BIT(3) << (s))
+
+void ast2700_print_wdtrst_info(void)
+{
+	u32 wdt_rst = readl(ASPEED_IO_RESET_LOG4);
+	int i;
+
+	for (i = 0; i < 8; i++) {
+		if (wdt_rst & WDT_RST_BIT_MASK(i * 4)) {
+			printf("RST: WDT%d ", i);
+			if (wdt_rst & BIT_WDT_SOC(i * 4)) {
+				printf("SOC ");
+				writel(BIT_WDT_SOC(i * 4), ASPEED_IO_RESET_LOG4);
+			}
+			if (wdt_rst & BIT_WDT_FULL(i * 4)) {
+				printf("FULL ");
+				writel(BIT_WDT_FULL(i * 4), ASPEED_IO_RESET_LOG4);
+			}
+			if (wdt_rst & BIT_WDT_ARM(i * 4)) {
+				printf("ARM ");
+				writel(BIT_WDT_ARM(i * 4), ASPEED_IO_RESET_LOG4);
+			}
+			if (wdt_rst & BIT_WDT_SW(i * 4)) {
+				printf("SW ");
+				writel(BIT_WDT_SW(i * 4), ASPEED_IO_RESET_LOG4);
+			}
+			printf("\n");
+		}
+	}
+}
+
+#define SYS_EXTRST		BIT(1)
+#define SYS_SRST		BIT(0)
+
+void ast2700_print_sysrst_info(void)
+{
+	u32 sys_rst = readl(ASPEED_CPU_RESET_LOG1);
+
+	if (sys_rst & SYS_SRST) {
+		printf("RST: Power On\n");
+		writel(SYS_SRST, ASPEED_CPU_RESET_LOG1);
+	} else if (sys_rst & SYS_EXTRST) {
+		printf("RST: EXTRST\n");
+		writel(SYS_EXTRST, ASPEED_CPU_RESET_LOG1);
+	} else {
+		ast2700_print_wdtrst_info();
+	}
+}
+
+int print_cpuinfo(void)
+{
+	ast2700_print_soc_id();
+	ast2700_print_sysrst_info();
+
+	return 0;
+}
diff --git a/arch/arm/mach-aspeed/ast2700/lowlevel_init.S b/arch/arm/mach-aspeed/ast2700/lowlevel_init.S
new file mode 100644
index 00000000000..9b78fed0b26
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/lowlevel_init.S
@@ -0,0 +1,132 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) ASPEED Technology Inc.
+ */
+#include <config.h>
+#include <linux/linkage.h>
+
+/*
+ *        SMP mailbox
+ * +-----------------------+ 0x40
+ * |                       |
+ * | mailbox insn. for     |
+ * | cpuN GO sign polling  |
+ * |                       |
+ * +-----------------------+ 0x20
+ * | cpu3 entrypoint       |
+ * +-----------------------+ 0x18
+ * | cpu2 entrypoint       |
+ * +-----------------------+ 0x10
+ * | cpu1 entrypoint       |
+ * +-----------------------+ 0x8
+ * | reserved              |
+ * +-----------------------+ 0x4
+ * | mailbox ready         |
+ * +-----------------------+ SCU_CPU + 0x780
+ */
+
+#define SCU_CPU_BASE		0x12c02000
+#define SCU_CPU_SMP_READY	(SCU_CPU_BASE + 0x780)
+#define SCU_CPU_SMP_EP1		(SCU_CPU_BASE + 0x788)
+#define SCU_CPU_SMP_EP2		(SCU_CPU_BASE + 0x790)
+#define SCU_CPU_SMP_EP3		(SCU_CPU_BASE + 0x798)
+#define SCU_CPU_SMP_POLLINSN	(SCU_CPU_BASE + 0x7a0)
+
+ENTRY(lowlevel_init)
+	/* backup LR */
+	mov	x29, lr
+
+#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)
+	/* reset SMP mailbox ASAP */
+	ldr	x0, =SCU_CPU_SMP_READY
+	str	wzr, [x0]
+
+	/*
+	 * get cpu core id
+	 *
+	 * ast2700 has 1-cluster, 4-cores CPU topology.
+	 * Affinity level 0 in MPIDR is sufficient.
+	 */
+	mrs	x4, mpidr_el1
+	ands	x4, x4, #0xff
+
+	/* cpu0 is the primary core to setup SMP mailbox */
+	beq	do_primary_core_setup
+
+	/* hold cpuN until mailbox is ready */
+	ldr	x0, =SCU_CPU_SMP_READY
+	movz	w1, #0xcafe
+	movk	w1, #0xbabe, lsl #16
+
+poll_mailbox_ready:
+	wfe
+	ldr	w2, [x0]
+	cmp	w1, w2
+	bne	poll_mailbox_ready
+
+	/*
+	 * parameters for relocated SMP go polling insn.
+	 *  x4 = cpu id
+	 *  x5 = SCU_CPU_SMP_EPx
+	 */
+	add	x5, x0, x4, lsl #3
+
+	/* jump to the polling loop in SMP mailbox, no return */
+	ldr	x0, =SCU_CPU_SMP_POLLINSN
+	br	x0
+
+do_primary_core_setup:
+	/* relocate mailbox insn. for cpuN to poll for SMP go signal */
+	adr	x0, smp_mbox_insn
+	adr	x1, smp_mbox_insn_end
+	ldr	x2, =SCU_CPU_SMP_POLLINSN
+
+relocate_smp_mbox_insn:
+	ldr	w3, [x0], #0x4
+	str	w3, [x2], #0x4
+	cmp	x0, x1
+	bne relocate_smp_mbox_insn
+
+	/* reset cpuN entrypoints */
+	ldr	x0, =SCU_CPU_SMP_EP1
+	str	xzr, [x0], #8
+	str	xzr, [x0], #8
+	str	xzr, [x0]
+
+	/* notify cpuN that SMP mailbox is ready */
+	movz	w0, #0xcafe
+	movk	w0, #0xbabe, lsl #16
+	ldr	x1, =SCU_CPU_SMP_READY
+	str	w0, [x1]
+
+	sev
+#endif	/* !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT) */
+
+	/* back to arch calling code */
+	mov	lr, x29
+	ret
+ENDPROC(lowlevel_init)
+
+/*
+ * insn. inside mailbox to poll SMP go signal.
+ *
+ * Note that this code will be relocated, any absolute
+ * addressing should NOT be used.
+ */
+smp_mbox_insn:
+	/*
+	 * x4 = cpu id
+	 * x5 = SCU_CPU_SMP_EPx
+	 */
+poll_smp_mbox_go:
+	wfe
+	ldr	x0, [x5]
+	cmp	x0, xzr
+	beq	poll_smp_mbox_go
+
+	/* jump to secondary core entrypoint */
+	br	x0
+
+smp_mbox_insn_end:
+	/* should never reach */
+	b	.
diff --git a/arch/arm/mach-aspeed/ast2700/platform.c b/arch/arm/mach-aspeed/ast2700/platform.c
new file mode 100644
index 00000000000..9cca85766f6
--- /dev/null
+++ b/arch/arm/mach-aspeed/ast2700/platform.c
@@ -0,0 +1,64 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) ASPEED Technology Inc.
+ */
+
+#include <dm.h>
+#include <asm/arch-aspeed/scu_ast2700.h>
+#include <asm/global_data.h>
+#include <asm/io.h>
+#include <env.h>
+#include <env_internal.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	enum env_location env_loc = ENVL_UNKNOWN;
+	u32 strap = readl(ASPEED_IO_HW_STRAP1);
+
+	if (prio)
+		return env_loc;
+
+	if (IS_ENABLED(CONFIG_ENV_IS_NOWHERE)) {
+		env_loc = ENVL_NOWHERE;
+	} else if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH) &&
+		   !(strap & SCU_IO_HWSTRAP_EMMC)) {
+		env_loc = ENVL_SPI_FLASH;
+	} else if (IS_ENABLED(CONFIG_ENV_IS_IN_MMC) &&
+		   (strap & SCU_IO_HWSTRAP_EMMC) &&
+		   !(strap & SCU_IO_HWSTRAP_UFS)) {
+		env_loc = ENVL_MMC;
+	} else if (IS_ENABLED(CONFIG_ENV_IS_IN_SPI_FLASH)) {
+		/*
+		 * This tree does not carry an ENV_IS_IN_UFS backend yet.
+		 * Fall back to SPI flash when that backend exists.
+		 */
+		env_loc = ENVL_SPI_FLASH;
+	} else {
+		env_loc = ENVL_NOWHERE;
+	}
+
+	return env_loc;
+}
+
+int arch_misc_init(void)
+{
+	if (IS_ENABLED(CONFIG_ARCH_MISC_INIT)) {
+		if ((readl(ASPEED_IO_HW_STRAP1) & SCU_IO_HWSTRAP_EMMC)) {
+			if ((readl(ASPEED_IO_HW_STRAP1) & SCU_IO_HWSTRAP_UFS))
+				env_set("boot_device", "ufs");
+			else
+				env_set("boot_device", "mmc");
+		} else {
+			env_set("boot_device", "spi");
+		}
+
+		if ((readl(ASPEED_IO_HW_STRAP1) & SCU_IO_HWSTRAP_SECBOOT))
+			env_set("verify", "yes");
+		else
+			env_set("verify", "no");
+	}
+
+	return 0;
+}