uboot-mediatek: add patches for MT7988 and builds for RFB

Import pending patches adding support for MT7988 and provide builds
for the reference board for all possible boot media.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 606 insertions, 0 deletions

diff --git a/package/boot/uboot-mediatek/patches/101-28-arm-mediatek-add-support-for-MediaTek-MT7988-SoC.patch b/package/boot/uboot-mediatek/patches/101-28-arm-mediatek-add-support-for-MediaTek-MT7988-SoC.patch
new file mode 100644
index 0000000000..f54a028b42
--- /dev/null
+++ b/package/boot/uboot-mediatek/patches/101-28-arm-mediatek-add-support-for-MediaTek-MT7988-SoC.patch
@@ -0,0 +1,606 @@
+From 884430dadcc2c5d0a2b248795001955a9fa5a1a9 Mon Sep 17 00:00:00 2001
+From: Weijie Gao <weijie.gao@mediatek.com>
+Date: Wed, 19 Jul 2023 17:17:49 +0800
+Subject: [PATCH 28/29] arm: mediatek: add support for MediaTek MT7988 SoC
+
+This patch adds basic support for MediaTek MT7988 SoC.
+This includes files that will initialize the SoC after boot and
+its device tree.
+
+Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
+---
+ arch/arm/dts/mt7988-u-boot.dtsi               |  25 ++
+ arch/arm/dts/mt7988.dtsi                      | 391 ++++++++++++++++++
+ arch/arm/mach-mediatek/Kconfig                |  13 +-
+ arch/arm/mach-mediatek/Makefile               |   1 +
+ arch/arm/mach-mediatek/mt7988/Makefile        |   4 +
+ arch/arm/mach-mediatek/mt7988/init.c          |  63 +++
+ arch/arm/mach-mediatek/mt7988/lowlevel_init.S |  30 ++
+ 7 files changed, 526 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/dts/mt7988-u-boot.dtsi
+ create mode 100644 arch/arm/dts/mt7988.dtsi
+ create mode 100644 arch/arm/mach-mediatek/mt7988/Makefile
+ create mode 100644 arch/arm/mach-mediatek/mt7988/init.c
+ create mode 100644 arch/arm/mach-mediatek/mt7988/lowlevel_init.S
+
+--- /dev/null
++++ b/arch/arm/dts/mt7988-u-boot.dtsi
+@@ -0,0 +1,25 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (c) 2022 MediaTek Inc.
++ * Author: Sam Shih <sam.shih@mediatek.com>
++ */
++
++&system_clk {
++	bootph-all;
++};
++
++&spi_clk {
++	bootph-all;
++};
++
++&uart0 {
++	bootph-all;
++};
++
++&uart1 {
++	bootph-all;
++};
++
++&uart2 {
++	bootph-all;
++};
+--- /dev/null
++++ b/arch/arm/dts/mt7988.dtsi
+@@ -0,0 +1,391 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (c) 2022 MediaTek Inc.
++ * Author: Sam Shih <sam.shih@mediatek.com>
++ */
++
++#include <dt-bindings/interrupt-controller/irq.h>
++#include <dt-bindings/interrupt-controller/arm-gic.h>
++#include <dt-bindings/clock/mt7988-clk.h>
++#include <dt-bindings/reset/mt7988-reset.h>
++#include <dt-bindings/gpio/gpio.h>
++
++/ {
++	compatible = "mediatek,mt7988-rfb";
++	interrupt-parent = <&gic>;
++	#address-cells = <2>;
++	#size-cells = <2>;
++
++	cpus {
++		#address-cells = <1>;
++		#size-cells = <0>;
++
++		cpu0: cpu@0 {
++			device_type = "cpu";
++			compatible = "arm,cortex-a73";
++			reg = <0x0>;
++			mediatek,hwver = <&hwver>;
++		};
++
++		cpu1: cpu@1 {
++			device_type = "cpu";
++			compatible = "arm,cortex-a73";
++			reg = <0x1>;
++			mediatek,hwver = <&hwver>;
++		};
++
++		cpu2: cpu@2 {
++			device_type = "cpu";
++			compatible = "arm,cortex-a73";
++			reg = <0x2>;
++			mediatek,hwver = <&hwver>;
++		};
++
++		cpu3: cpu@3 {
++			device_type = "cpu";
++			compatible = "arm,cortex-a73";
++			reg = <0x3>;
++			mediatek,hwver = <&hwver>;
++		};
++	};
++
++	system_clk: dummy40m {
++		compatible = "fixed-clock";
++		clock-frequency = <40000000>;
++		#clock-cells = <0>;
++	};
++
++	spi_clk: dummy208m {
++		compatible = "fixed-clock";
++		clock-frequency = <208000000>;
++		#clock-cells = <0>;
++	};
++
++	hwver: hwver {
++		compatible = "mediatek,hwver", "syscon";
++		reg = <0 0x8000000 0 0x1000>;
++	};
++
++	timer {
++		compatible = "arm,armv8-timer";
++		interrupt-parent = <&gic>;
++		clock-frequency = <13000000>;
++		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>;
++	};
++
++	watchdog: watchdog@1001c000 {
++		compatible = "mediatek,mt7622-wdt",
++			     "mediatek,mt6589-wdt",
++			     "syscon";
++		reg = <0 0x1001c000 0 0x1000>;
++		interrupts = <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>;
++		#reset-cells = <1>;
++	};
++
++	gic: interrupt-controller@c000000 {
++		compatible = "arm,gic-v3";
++		#interrupt-cells = <3>;
++		interrupt-parent = <&gic>;
++		interrupt-controller;
++		reg = <0 0x0c000000 0 0x40000>,  /* GICD */
++		      <0 0x0c080000 0 0x200000>; /* GICR */
++		interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
++	};
++
++	infracfg_ao_cgs: infracfg_ao_cgs@10001000 {
++		compatible = "mediatek,mt7988-infracfg_ao_cgs", "syscon";
++		reg = <0 0x10001000 0 0x1000>;
++		clock-parent = <&infracfg_ao>;
++		#clock-cells = <1>;
++	};
++
++	apmixedsys: apmixedsys@1001e000 {
++		compatible = "mediatek,mt7988-fixed-plls", "syscon";
++		reg = <0 0x1001e000 0 0x1000>;
++		#clock-cells = <1>;
++	};
++
++	topckgen: topckgen@1001b000 {
++		compatible = "mediatek,mt7988-topckgen", "syscon";
++		reg = <0 0x1001b000 0 0x1000>;
++		clock-parent = <&apmixedsys>;
++		#clock-cells = <1>;
++	};
++
++	pinctrl: pinctrl@1001f000 {
++		compatible = "mediatek,mt7988-pinctrl";
++		reg = <0 0x1001f000 0 0x1000>,
++		      <0 0x11c10000 0 0x1000>,
++		      <0 0x11d00000 0 0x1000>,
++		      <0 0x11d20000 0 0x1000>,
++		      <0 0x11e00000 0 0x1000>,
++		      <0 0x11f00000 0 0x1000>,
++		      <0 0x1000b000 0 0x1000>;
++		reg-names = "gpio_base", "iocfg_tr_base", "iocfg_br_base",
++			    "iocfg_rb_base", "iocfg_lb_base", "iocfg_tl_base",
++			    "eint";
++		gpio: gpio-controller {
++			gpio-controller;
++			#gpio-cells = <2>;
++		};
++	};
++
++	sgmiisys0: syscon@10060000 {
++		compatible = "mediatek,mt7988-sgmiisys_0", "syscon";
++		reg = <0 0x10060000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	sgmiisys1: syscon@10070000 {
++		compatible = "mediatek,mt7988-sgmiisys_1", "syscon";
++		reg = <0 0x10070000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	usxgmiisys0: syscon@10080000 {
++		compatible = "mediatek,mt7988-usxgmiisys_0", "syscon";
++		reg = <0 0x10080000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	usxgmiisys1: syscon@10081000 {
++		compatible = "mediatek,mt7988-usxgmiisys_1", "syscon";
++		reg = <0 0x10081000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	xfi_pextp0: syscon@11f20000 {
++		compatible = "mediatek,mt7988-xfi_pextp_0", "syscon";
++		reg = <0 0x11f20000 0 0x10000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	xfi_pextp1: syscon@11f30000 {
++		compatible = "mediatek,mt7988-xfi_pextp_1", "syscon";
++		reg = <0 0x11f30000 0 0x10000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	xfi_pll: syscon@11f40000 {
++		compatible = "mediatek,mt7988-xfi_pll", "syscon";
++		reg = <0 0x11f40000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	topmisc: topmisc@11d10000 {
++		compatible = "mediatek,mt7988-topmisc", "syscon",
++			     "mediatek,mt7988-power-controller";
++		reg = <0 0x11d10000 0 0x10000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	infracfg_ao: infracfg@10001000 {
++		compatible = "mediatek,mt7988-infracfg", "syscon";
++		reg = <0 0x10001000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++	};
++
++	uart0: serial@11000000 {
++		compatible = "mediatek,hsuart";
++		reg = <0 0x11000000 0 0x100>;
++		interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
++		clocks = <&infracfg_ao_cgs CK_INFRA_52M_UART0_CK>;
++		assigned-clocks = <&topckgen CK_TOP_UART_SEL>,
++				  <&infracfg_ao CK_INFRA_MUX_UART0_SEL>;
++		assigned-clock-parents = <&topckgen CK_TOP_CB_CKSQ_40M>,
++					 <&infracfg_ao CK_INFRA_UART_O0>;
++		status = "disabled";
++	};
++
++	uart1: serial@11000100 {
++		compatible = "mediatek,hsuart";
++		reg = <0 0x11000100 0 0x100>;
++		interrupts = <GIC_SPI 124 IRQ_TYPE_LEVEL_HIGH>;
++		clocks = <&infracfg_ao_cgs CK_INFRA_52M_UART1_CK>;
++		assigned-clocks = <&topckgen CK_TOP_UART_SEL>,
++				  <&infracfg_ao CK_INFRA_MUX_UART1_SEL>;
++		assigned-clock-parents = <&topckgen CK_TOP_CB_CKSQ_40M>,
++					 <&infracfg_ao CK_INFRA_UART_O1>;
++		status = "disabled";
++	};
++
++	uart2: serial@11000200 {
++		compatible = "mediatek,hsuart";
++		reg = <0 0x11000200 0 0x100>;
++		interrupts = <GIC_SPI 125 IRQ_TYPE_LEVEL_HIGH>;
++		clocks = <&infracfg_ao_cgs CK_INFRA_52M_UART2_CK>;
++		assigned-clocks = <&topckgen CK_TOP_UART_SEL>,
++				  <&infracfg_ao CK_INFRA_MUX_UART2_SEL>;
++		assigned-clock-parents = <&topckgen CK_TOP_CB_CKSQ_40M>,
++					 <&infracfg_ao CK_INFRA_UART_O2>;
++		status = "disabled";
++	};
++
++	i2c0: i2c@11003000 {
++		compatible = "mediatek,mt7988-i2c",
++			     "mediatek,mt7981-i2c";
++		reg = <0 0x11003000 0 0x1000>,
++		      <0 0x10217080 0 0x80>;
++		interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
++		clock-div = <1>;
++		clocks = <&infracfg_ao CK_INFRA_I2C_BCK>,
++			 <&infracfg_ao CK_INFRA_66M_AP_DMA_BCK>;
++		clock-names = "main", "dma";
++		#address-cells = <1>;
++		#size-cells = <0>;
++		status = "disabled";
++	};
++
++	i2c1: i2c@11004000 {
++		compatible = "mediatek,mt7988-i2c",
++			     "mediatek,mt7981-i2c";
++		reg = <0 0x11004000 0 0x1000>,
++		      <0 0x10217100 0 0x80>;
++		interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
++		clock-div = <1>;
++		clocks = <&infracfg_ao CK_INFRA_I2C_BCK>,
++			 <&infracfg_ao CK_INFRA_66M_AP_DMA_BCK>;
++		clock-names = "main", "dma";
++		#address-cells = <1>;
++		#size-cells = <0>;
++		status = "disabled";
++	};
++
++	i2c2: i2c@11005000 {
++		compatible = "mediatek,mt7988-i2c",
++			     "mediatek,mt7981-i2c";
++		reg = <0 0x11005000 0 0x1000>,
++		      <0 0x10217180 0 0x80>;
++		interrupts = <GIC_SPI 145 IRQ_TYPE_LEVEL_HIGH>;
++		clock-div = <1>;
++		clocks = <&infracfg_ao CK_INFRA_I2C_BCK>,
++			 <&infracfg_ao CK_INFRA_66M_AP_DMA_BCK>;
++		clock-names = "main", "dma";
++		#address-cells = <1>;
++		#size-cells = <0>;
++		status = "disabled";
++	};
++
++	pwm: pwm@10048000 {
++		compatible = "mediatek,mt7988-pwm";
++		reg = <0 0x10048000 0 0x1000>;
++		#pwm-cells = <2>;
++		clocks = <&infracfg_ao CK_INFRA_66M_PWM_BCK>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_HCK>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK1>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK2>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK3>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK4>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK5>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK6>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK7>,
++			 <&infracfg_ao CK_INFRA_66M_PWM_CK8>;
++		clock-names = "top", "main", "pwm1", "pwm2", "pwm3",
++			      "pwm4","pwm5","pwm6","pwm7","pwm8";
++		status = "disabled";
++	};
++
++	snand: snand@11001000 {
++		compatible = "mediatek,mt7988-snand",
++			     "mediatek,mt7986-snand";
++		reg = <0 0x11001000 0 0x1000>,
++		      <0 0x11002000 0 0x1000>;
++		reg-names = "nfi", "ecc";
++		interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
++		clocks = <&infracfg_ao CK_INFRA_SPINFI>,
++			 <&infracfg_ao CK_INFRA_NFI>,
++			 <&infracfg_ao CK_INFRA_66M_NFI_HCK>;
++		clock-names = "pad_clk", "nfi_clk", "nfi_hclk";
++		assigned-clocks = <&topckgen CK_TOP_SPINFI_SEL>,
++				  <&topckgen CK_TOP_NFI1X_SEL>;
++		assigned-clock-parents = <&topckgen CK_TOP_CB_M_D8>,
++					 <&topckgen CK_TOP_CB_M_D8>;
++		status = "disabled";
++	};
++
++	spi0: spi@1100a000 {
++		compatible = "mediatek,ipm-spi";
++		reg = <0 0x11007000 0 0x100>;
++		clocks = <&spi_clk>,
++			 <&spi_clk>;
++		clock-names = "sel-clk", "spi-clk";
++		interrupts = <GIC_SPI 140 IRQ_TYPE_LEVEL_HIGH>;
++		status = "disabled";
++	};
++
++	spi1: spi@1100b000 {
++		compatible = "mediatek,ipm-spi";
++		reg = <0 0x11008000 0 0x100>;
++		interrupts = <GIC_SPI 141 IRQ_TYPE_LEVEL_HIGH>;
++		status = "disabled";
++	};
++
++	spi2: spi@11009000 {
++		compatible = "mediatek,ipm-spi";
++		reg = <0 0x11009000 0 0x100>;
++		clocks = <&spi_clk>,
++			 <&spi_clk>;
++		clock-names = "sel-clk", "spi-clk";
++		interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>;
++		status = "disabled";
++	};
++
++	mmc0: mmc@11230000 {
++		compatible = "mediatek,mt7988-mmc",
++			     "mediatek,mt7986-mmc";
++		reg = <0 0x11230000 0 0x1000>;
++		interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
++		clocks = <&infracfg_ao_cgs CK_INFRA_MSDC400>,
++			 <&infracfg_ao_cgs CK_INFRA_MSDC2_HCK>,
++			 <&infracfg_ao_cgs CK_INFRA_133M_MSDC_0_HCK>,
++			 <&infracfg_ao_cgs CK_INFRA_66M_MSDC_0_HCK>;
++		clock-names = "source", "hclk", "source_cg", "axi_cg";
++		status = "disabled";
++	};
++
++	ethdma: syscon@15000000 {
++		compatible = "mediatek,mt7988-ethdma", "syscon";
++		reg = <0 0x15000000 0 0x20000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++		#reset-cells = <1>;
++	};
++
++	ethwarp: syscon@15031000 {
++		compatible = "mediatek,mt7988-ethwarp", "syscon";
++		reg = <0 0x15031000 0 0x1000>;
++		clock-parent = <&topckgen>;
++		#clock-cells = <1>;
++		#reset-cells = <1>;
++	};
++
++	eth: ethernet@15100000 {
++		compatible = "mediatek,mt7988-eth", "syscon";
++		reg = <0 0x15100000 0 0x20000>;
++		mediatek,ethsys = <&ethdma>;
++		mediatek,sgmiisys = <&sgmiisys0>;
++		mediatek,usxgmiisys = <&usxgmiisys0>;
++		mediatek,xfi_pextp = <&xfi_pextp0>;
++		mediatek,xfi_pll = <&xfi_pll>;
++		mediatek,infracfg = <&topmisc>;
++		mediatek,toprgu = <&watchdog>;
++		resets = <&ethdma ETHDMA_FE_RST>, <&ethwarp ETHWARP_GSW_RST>;
++		reset-names = "fe", "mcm";
++		#address-cells = <1>;
++		#size-cells = <0>;
++		mediatek,mcm;
++		status = "disabled";
++	};
++};
+--- a/arch/arm/mach-mediatek/Kconfig
++++ b/arch/arm/mach-mediatek/Kconfig
+@@ -58,6 +58,15 @@ config TARGET_MT7986
+ 	  including UART, SPI, SPI flash, USB3.0, MMC, NAND, SNFI, PWM, PCIe,
+ 	  Gigabit Ethernet, I2C, built-in 4x4 Wi-Fi, and PCIe.
+ 
++config TARGET_MT7988
++	bool "MediaTek MT7988 SoC"
++	select ARM64
++	select CPU
++	help
++	  The MediaTek MT7988 is a ARM64-based SoC with a quad-core Cortex-A73.
++	  including UART, SPI, SPI flash, USB3.0, MMC, NAND, SNFI, PWM, PCIe,
++	  10 Gigabit Ethernet , I2C, and PCIe.
++
+ config TARGET_MT8183
+ 	bool "MediaTek MT8183 SoC"
+ 	select ARM64
+@@ -104,6 +113,7 @@ config SYS_BOARD
+ 	default "mt7629" if TARGET_MT7629
+ 	default "mt7981" if TARGET_MT7981
+ 	default "mt7986" if TARGET_MT7986
++	default "mt7988" if TARGET_MT7988
+ 	default "mt8183" if TARGET_MT8183
+ 	default "mt8512" if TARGET_MT8512
+ 	default "mt8516" if TARGET_MT8516
+@@ -121,6 +131,7 @@ config SYS_CONFIG_NAME
+ 	default "mt7629" if TARGET_MT7629
+ 	default "mt7981" if TARGET_MT7981
+ 	default "mt7986" if TARGET_MT7986
++	default "mt7988" if TARGET_MT7988
+ 	default "mt8183" if TARGET_MT8183
+ 	default "mt8512" if TARGET_MT8512
+ 	default "mt8516" if TARGET_MT8516
+@@ -135,7 +146,7 @@ config MTK_BROM_HEADER_INFO
+ 	string
+ 	default "media=nor" if TARGET_MT8518 || TARGET_MT8512 || TARGET_MT7622
+ 	default "media=emmc" if TARGET_MT8516 || TARGET_MT8365 || TARGET_MT8183
+-	default "media=snand;nandinfo=2k+64" if TARGET_MT7981 || TARGET_MT7986
++	default "media=snand;nandinfo=2k+64" if TARGET_MT7981 || TARGET_MT7986 || TARGET_MT7988
+ 	default "lk=1" if TARGET_MT7623
+ 
+ source "board/mediatek/mt7629/Kconfig"
+--- a/arch/arm/mach-mediatek/Makefile
++++ b/arch/arm/mach-mediatek/Makefile
+@@ -9,6 +9,7 @@ obj-$(CONFIG_TARGET_MT7623) += mt7623/
+ obj-$(CONFIG_TARGET_MT7629) += mt7629/
+ obj-$(CONFIG_TARGET_MT7981) += mt7981/
+ obj-$(CONFIG_TARGET_MT7986) += mt7986/
++obj-$(CONFIG_TARGET_MT7988) += mt7988/
+ obj-$(CONFIG_TARGET_MT8183) += mt8183/
+ obj-$(CONFIG_TARGET_MT8516) += mt8516/
+ obj-$(CONFIG_TARGET_MT8518) += mt8518/
+--- /dev/null
++++ b/arch/arm/mach-mediatek/mt7988/Makefile
+@@ -0,0 +1,4 @@
++# SPDX-License-Identifier:	GPL-2.0
++
++obj-y += init.o
++obj-y += lowlevel_init.o
+--- /dev/null
++++ b/arch/arm/mach-mediatek/mt7988/init.c
+@@ -0,0 +1,63 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * Copyright (C) 2022 MediaTek Inc.
++ * Author: Sam Shih <sam.shih@mediatek.com>
++ */
++
++#include <fdtdec.h>
++#include <init.h>
++#include <asm/armv8/mmu.h>
++#include <asm/global_data.h>
++#include <asm/u-boot.h>
++#include <asm/system.h>
++
++DECLARE_GLOBAL_DATA_PTR;
++
++#define SZ_8G				_AC(0x200000000, ULL)
++
++int dram_init(void)
++{
++	int ret;
++
++	ret = fdtdec_setup_mem_size_base();
++	if (ret)
++		return ret;
++
++	gd->ram_size = get_ram_size((void *)gd->ram_base, SZ_8G);
++
++	return 0;
++}
++
++int dram_init_banksize(void)
++{
++	gd->bd->bi_dram[0].start = gd->ram_base;
++	gd->bd->bi_dram[0].size = gd->ram_size;
++
++	return 0;
++}
++
++void reset_cpu(ulong addr)
++{
++	psci_system_reset();
++}
++
++static struct mm_region mt7988_mem_map[] = {
++	{
++		/* DDR */
++		.virt = 0x40000000UL,
++		.phys = 0x40000000UL,
++		.size = 0x200000000ULL,
++		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_OUTER_SHARE,
++	}, {
++		.virt = 0x00000000UL,
++		.phys = 0x00000000UL,
++		.size = 0x40000000UL,
++		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
++			 PTE_BLOCK_NON_SHARE |
++			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
++	}, {
++		0,
++	}
++};
++
++struct mm_region *mem_map = mt7988_mem_map;
+--- /dev/null
++++ b/arch/arm/mach-mediatek/mt7988/lowlevel_init.S
+@@ -0,0 +1,30 @@
++/* SPDX-License-Identifier: GPL-2.0 */
++/*
++ * Copyright (C) 2020 MediaTek Inc.
++ * Author: Sam Shih <sam.shih@mediatek.com>
++ */
++
++/*
++ * Switch from AArch64 EL2 to AArch32 EL2
++ * @param inputs:
++ * x0: argument, zero
++ * x1: machine nr
++ * x2: fdt address
++ * x3: input argument
++ * x4: kernel entry point
++ * @param outputs for secure firmware:
++ * x0: function id
++ * x1: kernel entry point
++ * x2: machine nr
++ * x3: fdt address
++*/
++
++.global armv8_el2_to_aarch32
++armv8_el2_to_aarch32:
++	mov     x3, x2
++	mov     x2, x1
++	mov     x1, x4
++	mov	x4, #0
++	ldr x0, =0x82000200
++	SMC #0
++	ret