[U-Boot] [PATCH 1/5] ARM: MediaTek: Add support for MediaTek MT8518 SoC

[mingming lee <mingming.lee@mediatek.com>]

Add support for MediaTek MT8518 SoC. This include the file
that will initialize the SoC after boot and its device tree.

Signed-off-by: mingming lee <mingming.lee@mediatek.com>
---
 arch/arm/dts/mt8518.dtsi                      | 201 ++++++++++++++++++
 arch/arm/mach-mediatek/Kconfig                |   9 +
 arch/arm/mach-mediatek/Makefile               |   1 +
 arch/arm/mach-mediatek/mt8518/Makefile        |   4 +
 arch/arm/mach-mediatek/mt8518/init.c          | 116 ++++++++++
 arch/arm/mach-mediatek/mt8518/lowlevel_init.S |  59 +++++
 6 files changed, 390 insertions(+)
 create mode 100644 arch/arm/dts/mt8518.dtsi
 create mode 100644 arch/arm/mach-mediatek/mt8518/Makefile
 create mode 100644 arch/arm/mach-mediatek/mt8518/init.c
 create mode 100644 arch/arm/mach-mediatek/mt8518/lowlevel_init.S

diff --git a/arch/arm/dts/mt8518.dtsi b/arch/arm/dts/mt8518.dtsi
new file mode 100644
index 0000000000..39d001884f
--- /dev/null
+++ b/arch/arm/dts/mt8518.dtsi
@@ -0,0 +1,201 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Mingming Lee <mingming.lee@mediatek.com>
+ *
+ */
+
+#include <dt-bindings/clock/mt8518-clk.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/ {
+	compatible = "mediatek,mt8518";
+	interrupt-parent = <&sysirq>;
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		enable-method = "mediatek,mt8518-smp";
+
+		cpu0: cpu at 0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x0>;
+			clock-frequency = <1300000000>;
+		};
+
+		cpu1: cpu at 1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x1>;
+			clock-frequency = <1300000000>;
+		};
+
+		cpu2: cpu at 2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x2>;
+			clock-frequency = <1300000000>;
+		};
+
+		cpu3: cpu at 3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a53";
+			reg = <0x3>;
+			clock-frequency = <1300000000>;
+		};
+	};
+
+	chipid: chipid at 08000000 {
+		compatible = "mediatek,chipid";
+		reg = <0x08000000 0x0004>,
+		      <0x08000004 0x0004>,
+		      <0x08000008 0x0004>,
+		      <0x0800000c 0x0004>;
+	};
+
+	topckgen: clock-controller at 10000000 {
+		compatible = "mediatek,mt8518-topckgen";
+		reg = <0x10000000 0x1000>;
+		#clock-cells = <1>;
+	};
+
+	topckgen_cg: clock-controller-cg at 10000000 {
+		compatible = "mediatek,mt8518-topckgen-cg";
+		reg = <0x10000000 0x1000>;
+		#clock-cells = <1>;
+	};
+
+	apmixedsys: clock-controller at 10018000 {
+		compatible = "mediatek,mt8518-apmixedsys";
+		reg = <0x10018000 0x1000>;
+		#clock-cells = <1>;
+	};
+
+	gic: interrupt-controller at 0c000000 {
+		 compatible = "arm,gic-v3";
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+		interrupt-controller;
+		reg = <0xc000000 0x40000>,	/* GICD */
+			  <0xc100000 0x200000>; /* GICR */
+		interrupts = <GIC_PPI 9
+			(GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
+	};
+
+	sysirq: interrupt-controller at 10200a80 {
+		compatible = "mediatek,sysirq";
+		interrupt-controller;
+		#interrupt-cells = <3>;
+		interrupt-parent = <&gic>;
+		reg = <0x10200a80 0x50>;
+	};
+
+	apdma: dma-controller at 11000480 {
+		compatible = "mediatek,mt8518-uart-dma",
+			"mediatek,mt6577-uart-dma";
+		reg = <0x11000480 0x80>,
+			  <0x11000500 0x80>,
+			  <0x11000580 0x80>,
+			  <0x11000600 0x80>,
+			  <0x11000980 0x80>,
+			  <0x11000a00 0x80>;
+		interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>,
+			<GIC_SPI 97 IRQ_TYPE_LEVEL_LOW>,
+			<GIC_SPI 98 IRQ_TYPE_LEVEL_LOW>,
+			<GIC_SPI 99 IRQ_TYPE_LEVEL_LOW>,
+			<GIC_SPI 100 IRQ_TYPE_LEVEL_LOW>,
+			<GIC_SPI 101 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_APDMA>;
+		clock-names = "apdma";
+		#dma-cells = <1>;
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&gic>;
+		interrupts = <GIC_PPI 13
+				 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+				 <GIC_PPI 14
+				 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+				 <GIC_PPI 11
+				 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+				 <GIC_PPI 10
+				 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
+		clock-frequency = <13000000>;
+	};
+
+	timer0: apxgpt at 10008000 {
+		compatible = "mediatek,timer",
+			   "mediatek,mt8518-timer",
+			   "mediatek,mt6577-timer";
+		reg = <0x10008000 0x1000>;
+		interrupts = <GIC_SPI 138 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_CLK26M_D2>,
+			 <&topckgen CLK_TOP_CLK32K>,
+			 <&topckgen CLK_TOP_APXGPT>;
+		clock-names = "clk13m",
+			 "clk32k",
+			 "bus";
+	};
+
+	watchdog: watchdog at 10007000 {
+		compatible = "mediatek,wdt";
+		reg = <0x10007000 0x1000>;
+		interrupts = <GIC_SPI 190 IRQ_TYPE_EDGE_FALLING>;
+		#reset-cells = <1>;
+		status = "disabled";
+	};
+
+	mmc0: mmc at 11120000 {
+		compatible = "mediatek,mt8516-mmc";
+		reg = <0x11120000 0x1000>;
+		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_MSDC0>,
+			<&topckgen CLK_TOP_MSDC0>,
+			<&topckgen CLK_TOP_MSDC0_B>;
+		clock-names = "source", "hclk", "source_cg";
+		status = "disabled";
+	};
+
+	uart0: serial at 11005000 {
+		compatible = "mediatek,hsuart";
+		reg = <0x11005000 0x1000>;
+		interrupts = <GIC_SPI 84 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_UART0_SEL>,
+			<&topckgen CLK_TOP_UART0>;
+		clock-names = "baud", "bus";
+		status = "disabled";
+	};
+
+	uart1: serial at 11001A000 {
+		compatible = "mediatek,hsuart";
+		reg = <0x1001A000 0x1000>;
+		interrupts = <GIC_SPI 169 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_UART1_SEL>,
+			<&topckgen CLK_TOP_UART1>;
+		clock-names = "baud", "bus";
+		dmas = <&apdma 2
+			&apdma 3>;
+		dma-names = "tx", "rx";
+		status = "disabled";
+	};
+
+	uart2: serial at 11007000 {
+		compatible = "mediatek,hsuart";
+		reg = <0x11007000 0x1000>;
+		interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_LOW>;
+		clocks = <&topckgen CLK_TOP_UART2_SEL>,
+			<&topckgen CLK_TOP_UART2>;
+		clock-names = "baud", "bus";
+		dmas = <&apdma 4
+			&apdma 5>;
+		dma-names = "tx", "rx";
+		status = "disabled";
+	};
+
+};
diff --git a/arch/arm/mach-mediatek/Kconfig b/arch/arm/mach-mediatek/Kconfig
index 25ef7651f0..8e343c3182 100644
--- a/arch/arm/mach-mediatek/Kconfig
+++ b/arch/arm/mach-mediatek/Kconfig
@@ -38,6 +38,15 @@ config TARGET_MT8516
 	  Ethernet, IR TX/RX, I2C, I2S, S/PDIF, and built-in Wi-Fi / Bluetooth combo
 	  chip and several DDR3 and DDR4 options.
 
+config TARGET_MT8518
+	bool "MediaTek MT8518 SoC"
+	select ARM64
+	help
+	  The MediaTek MT8518 is a ARM64-based SoC with a quad-core Cortex-A53.
+	  including UART, SPI, USB2.0 and OTG, SD and MMC cards, NAND, PWM,
+	  Ethernet, IR TX/RX, I2C, I2S, S/PDIF, and built-in Wi-Fi / Bluetooth combo
+	  chip and several DDR3 and DDR4 options.
+
 endchoice
 
 source "board/mediatek/mt7623/Kconfig"
diff --git a/arch/arm/mach-mediatek/Makefile b/arch/arm/mach-mediatek/Makefile
index ea414dc407..b9b2355e03 100644
--- a/arch/arm/mach-mediatek/Makefile
+++ b/arch/arm/mach-mediatek/Makefile
@@ -6,3 +6,4 @@ obj-$(CONFIG_SPL_BUILD)	+= spl.o
 obj-$(CONFIG_TARGET_MT7623) += mt7623/
 obj-$(CONFIG_TARGET_MT7629) += mt7629/
 obj-$(CONFIG_TARGET_MT8516) += mt8516/
+obj-$(CONFIG_TARGET_MT8518) += mt8518/
diff --git a/arch/arm/mach-mediatek/mt8518/Makefile b/arch/arm/mach-mediatek/mt8518/Makefile
new file mode 100644
index 0000000000..007eb4a367
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8518/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier:	GPL-2.0
+
+obj-y += init.o
+obj-y += lowlevel_init.o
diff --git a/arch/arm/mach-mediatek/mt8518/init.c b/arch/arm/mach-mediatek/mt8518/init.c
new file mode 100644
index 0000000000..419454f794
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8518/init.c
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Configuration for MediaTek MT8518 SoC
+ *
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Mingming Lee <mingming.lee@mediatek.com>
+ */
+
+#include <clk.h>
+#include <common.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <ram.h>
+#include <asm/arch/misc.h>
+#include <asm/armv8/mmu.h>
+#include <asm/sections.h>
+#include <dm/uclass.h>
+#include <dt-bindings/clock/mt8518-clk.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	int ret;
+
+	ret = fdtdec_setup_memory_banksize();
+	if (ret)
+		return ret;
+
+	return fdtdec_setup_mem_size_base();
+}
+
+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;
+}
+
+int mtk_pll_early_init(void)
+{
+	unsigned long pll_rates[] = {
+		[CLK_APMIXED_ARMPLL] =   1300000000,
+		[CLK_APMIXED_MAINPLL] =  1501000000,
+		[CLK_APMIXED_UNIVPLL] =  1248000000,
+		[CLK_APMIXED_MMPLL] =     380000000,
+	};
+	struct udevice *dev;
+	int ret, i;
+
+	ret = uclass_get_device_by_driver(UCLASS_CLK,
+					  DM_GET_DRIVER(mtk_clk_apmixedsys),
+					  &dev);
+	if (ret)
+		return ret;
+
+	/* configure default rate then enable apmixedsys */
+	for (i = 0; i < ARRAY_SIZE(pll_rates); i++) {
+		struct clk clk = { .id = i, .dev = dev };
+
+		ret = clk_set_rate(&clk, pll_rates[i]);
+		if (ret)
+			return ret;
+
+		ret = clk_enable(&clk);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+int mtk_soc_early_init(void)
+{
+	int ret;
+
+	/* initialize early clocks */
+	ret = mtk_pll_early_init();
+	if (ret)
+		return ret;
+
+	return 0;
+}
+
+void reset_cpu(ulong addr)
+{
+	psci_system_reset();
+}
+
+int print_cpuinfo(void)
+{
+	printf("CPU:   MediaTek MT8518\n");
+	return 0;
+}
+
+static struct mm_region mt8518_mem_map[] = {
+	{
+		/* DDR */
+		.virt = 0x40000000UL,
+		.phys = 0x40000000UL,
+		.size = 0x20000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_NORMAL) | PTE_BLOCK_OUTER_SHARE,
+	}, {
+		.virt = 0x00000000UL,
+		.phys = 0x00000000UL,
+		.size = 0x20000000UL,
+		.attrs = PTE_BLOCK_MEMTYPE(MT_DEVICE_NGNRNE) |
+			 PTE_BLOCK_NON_SHARE |
+			 PTE_BLOCK_PXN | PTE_BLOCK_UXN
+	}, {
+		0,
+	}
+};
+
+struct mm_region *mem_map = mt8518_mem_map;
diff --git a/arch/arm/mach-mediatek/mt8518/lowlevel_init.S b/arch/arm/mach-mediatek/mt8518/lowlevel_init.S
new file mode 100644
index 0000000000..3db4ee5b85
--- /dev/null
+++ b/arch/arm/mach-mediatek/mt8518/lowlevel_init.S
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2019 MediaTek Inc.
+ * Author: Mingming Lee <mingming.lee@mediatek.com>
+ */
+
+/*pre-loader LK to uboot argument Location*/
+.global BOOT_ARGUMENT_DRAM_SIZE
+BOOT_ARGUMENT_DRAM_SIZE:
+	.word 0x00000000
+
+.global BOOT_ARGUMENT_LINUX_ID
+BOOT_ARGUMENT_LINUX_ID:
+	.word 0x00000000
+
+.global BOOT_ARGUMENT_LOCATION
+BOOT_ARGUMENT_LOCATION:
+	.word 0x00000000
+
+/****************To instead what defined in start.S**************************
+ *void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) __attribute__((weak))
+ ****************************************************************************/
+
+.globl save_boot_params
+save_boot_params:
+	ldr     x6, =BOOT_ARGUMENT_DRAM_SIZE
+	str     x0, [x6]
+	ldr     x6, =BOOT_ARGUMENT_LINUX_ID
+	str     x1, [x6]
+	ldr     x6, =BOOT_ARGUMENT_LOCATION
+	str     x2, [x6]
+	b       save_boot_params_ret
+
+/*
+ * 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
+	/* Define in src\bsp\trustzone\atf\v1.2\ */
+	/* mt8xxx\plat\mediatek\common\sip_svc.h */
+	/* MTK_SIP_KERNEL_BOOT_AARCH64 for U-BOOT-64 to KERNEL*/
+	ldr x0, =0xC2000200
+	SMC #0
+	ret
-- 
2.23.0