mips: mtmips: add support for MediaTek MT7621 SoC
This patch adds support for MediaTek MT7621 SoC.
All files are dedicated for u-boot.
The default build target is u-boot-mt7621.bin.
The specification of this chip:
https://www.mediatek.com/products/homenetworking/mt7621
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
diff --git a/arch/mips/Makefile b/arch/mips/Makefile
index 32c436f..a007914 100644
--- a/arch/mips/Makefile
+++ b/arch/mips/Makefile
@@ -4,6 +4,11 @@
ifeq ($(CONFIG_SPL_BUILD),y)
head-$(CONFIG_ARCH_JZ47XX) := arch/mips/mach-jz47xx/start.o
+head-$(CONFIG_SOC_MT7621) := arch/mips/mach-mtmips/mt7621/spl/start.o
+endif
+
+ifeq ($(CONFIG_TPL_BUILD),y)
+head-$(CONFIG_SOC_MT7621) := arch/mips/mach-mtmips/mt7621/tpl/start.o
endif
libs-y += arch/mips/cpu/
diff --git a/arch/mips/dts/mt7621-u-boot.dtsi b/arch/mips/dts/mt7621-u-boot.dtsi
new file mode 100644
index 0000000..c5a8aa3
--- /dev/null
+++ b/arch/mips/dts/mt7621-u-boot.dtsi
@@ -0,0 +1,111 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <linux/stringify.h>
+
+/ {
+ binman: binman {
+ multiple-images;
+ };
+};
+
+&sysc {
+ u-boot,dm-pre-reloc;
+};
+
+&reboot {
+ u-boot,dm-pre-reloc;
+};
+
+&clkctrl {
+ u-boot,dm-pre-reloc;
+};
+
+&rstctrl {
+ u-boot,dm-pre-reloc;
+};
+
+&pinctrl {
+ u-boot,dm-pre-reloc;
+};
+
+&uart0 {
+ u-boot,dm-pre-reloc;
+};
+
+&uart1 {
+ u-boot,dm-pre-reloc;
+};
+
+&uart2 {
+ u-boot,dm-pre-reloc;
+};
+
+&binman {
+ u-boot-spl-ddr {
+ align = <4>;
+ align-size = <4>;
+ filename = "u-boot-spl-ddr.bin";
+ pad-byte = <0xff>;
+
+ u-boot-spl {
+ align-end = <4>;
+ filename = "u-boot-spl.bin";
+ };
+
+ stage_bin {
+ filename = "mt7621_stage_sram.bin";
+ type = "blob-ext";
+ };
+ };
+
+ spl-img {
+ filename = "u-boot-spl-ddr.img";
+
+ mkimage {
+#ifdef CONFIG_MT7621_BOOT_FROM_NAND
+ args = "-T", "mtk_image", "-n", "mt7621=1",
+ "-a", __stringify(CONFIG_SPL_TEXT_BASE),
+ "-e", __stringify(CONFIG_SPL_TEXT_BASE);
+#else
+ args = "-A", "mips", "-T", "standalone", "-O", "u-boot",
+ "-C", "none", "-n", "MT7621 U-Boot SPL",
+ "-a", __stringify(CONFIG_SPL_TEXT_BASE),
+ "-e", __stringify(CONFIG_SPL_TEXT_BASE);
+#endif
+
+ blob {
+ filename = "u-boot-spl-ddr.bin";
+ };
+ };
+ };
+
+ mt7621-uboot {
+ filename = "u-boot-mt7621.bin";
+ pad-byte = <0xff>;
+
+#ifndef CONFIG_MT7621_BOOT_FROM_NAND
+ u-boot-tpl {
+ align-end = <4>;
+ filename = "u-boot-tpl.bin";
+ };
+#endif
+
+ spl {
+#ifdef CONFIG_MT7621_BOOT_FROM_NAND
+ align-end = <0x1000>;
+#endif
+ filename = "u-boot-spl-ddr.img";
+ type = "blob";
+ };
+
+ u-boot {
+ filename = "u-boot-lzma.img";
+ type = "blob";
+ };
+ };
+};
diff --git a/arch/mips/dts/mt7621.dtsi b/arch/mips/dts/mt7621.dtsi
new file mode 100644
index 0000000..c32b609
--- /dev/null
+++ b/arch/mips/dts/mt7621.dtsi
@@ -0,0 +1,349 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <dt-bindings/clock/mt7621-clk.h>
+#include <dt-bindings/reset/mt7621-reset.h>
+#include <dt-bindings/phy/phy.h>
+
+/ {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "mediatek,mt7621-soc";
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ cpu@0 {
+ device_type = "cpu";
+ compatible = "mips,mips1004Kc";
+ reg = <0>;
+ };
+
+ cpu@1 {
+ device_type = "cpu";
+ compatible = "mips,mips1004Kc";
+ reg = <1>;
+ };
+ };
+
+ clk48m: clk48m {
+ compatible = "fixed-clock";
+
+ clock-frequency = <48000000>;
+
+ #clock-cells = <0>;
+ };
+
+ clk50m: clk50m {
+ compatible = "fixed-clock";
+
+ clock-frequency = <50000000>;
+
+ #clock-cells = <0>;
+ };
+
+ sysc: sysctrl@1e000000 {
+ compatible = "mediatek,mt7621-sysc", "syscon";
+ reg = <0x1e000000 0x100>;
+
+ clkctrl: clock-controller@1e000030 {
+ compatible = "mediatek,mt7621-clk";
+ mediatek,memc = <&memc>;
+
+ #clock-cells = <1>;
+ };
+ };
+
+ rstctrl: reset-controller@1e000034 {
+ compatible = "mediatek,mtmips-reset";
+ reg = <0x1e000034 0x4>;
+ #reset-cells = <1>;
+ };
+
+ reboot: resetctl-reboot {
+ compatible = "resetctl-reboot";
+
+ resets = <&rstctrl RST_SYS>;
+ reset-names = "sysreset";
+ };
+
+ memc: memctrl@1e005000 {
+ compatible = "mediatek,mt7621-memc", "syscon";
+ reg = <0x1e005000 0x1000>;
+ };
+
+ pinctrl: pinctrl@1e000060 {
+ compatible = "mediatek,mt7621-pinctrl";
+ reg = <0x1e000048 0x30>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&state_default>;
+
+ state_default: pin_state {
+ };
+
+ uart1_pins: uart1_pins {
+ groups = "uart1";
+ function = "uart";
+ };
+
+ uart2_pins: uart2_pins {
+ groups = "uart2";
+ function = "uart";
+ };
+
+ uart3_pins: uart3_pins {
+ groups = "uart3";
+ function = "uart";
+ };
+
+ sdxc_pins: sdxc_pins {
+ groups = "sdxc";
+ function = "sdxc";
+ };
+
+ spi_pins: spi_pins {
+ groups = "spi";
+ function = "spi";
+ };
+
+ eth_pins: eth_pins {
+ mdio_pins {
+ groups = "mdio";
+ function = "mdio";
+ };
+
+ rgmii1_pins {
+ groups = "rgmii1";
+ function = "rgmii";
+ };
+
+ esw_pins {
+ groups = "esw int";
+ function = "esw int";
+ };
+
+ mdio_pconf {
+ groups = "mdio";
+ drive-strength = <2>;
+ };
+ };
+ };
+
+ watchdog: watchdog@1e000100 {
+ compatible = "mediatek,mt7621-wdt";
+ reg = <0x1e000100 0x40>;
+
+ resets = <&rstctrl RST_TIMER>;
+ reset-names = "wdt";
+
+ status = "disabled";
+ };
+
+ gpio: gpio@1e000600 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "mtk,mt7621-gpio";
+ reg = <0x1e000600 0x100>;
+
+ resets = <&rstctrl RST_PIO>;
+ reset-names = "pio";
+
+ gpio0: bank@0 {
+ reg = <0>;
+ compatible = "mtk,mt7621-gpio-bank";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio1: bank@1 {
+ reg = <1>;
+ compatible = "mtk,mt7621-gpio-bank";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+
+ gpio2: bank@2 {
+ reg = <2>;
+ compatible = "mtk,mt7621-gpio-bank";
+ gpio-controller;
+ #gpio-cells = <2>;
+ };
+ };
+
+ spi: spi@1e000b00 {
+ compatible = "ralink,mt7621-spi";
+ reg = <0x1e000b00 0x40>;
+
+ status = "disabled";
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi_pins>;
+
+ resets = <&rstctrl RST_SPI>;
+ reset-names = "spi";
+
+ clocks = <&clkctrl MT7621_CLK_SPI>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+ uart0: uart1@1e000c00 {
+ compatible = "mediatek,hsuart", "ns16550a";
+ reg = <0x1e000c00 0x100>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins>;
+
+ clocks = <&clkctrl MT7621_CLK_UART1>;
+
+ resets = <&rstctrl RST_UART1>;
+
+ reg-shift = <2>;
+ };
+
+ uart1: uart2@1e000d00 {
+ compatible = "mediatek,hsuart", "ns16550a";
+ reg = <0x1e000d00 0x100>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart2_pins>;
+
+ clocks = <&clkctrl MT7621_CLK_UART2>;
+
+ resets = <&rstctrl RST_UART2>;
+
+ reg-shift = <2>;
+
+ status = "disabled";
+ };
+
+ uart2: uart3@1e000e00 {
+ compatible = "mediatek,hsuart", "ns16550a";
+ reg = <0x1e000e00 0x100>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart3_pins>;
+
+ clocks = <&clkctrl MT7621_CLK_UART3>;
+
+ resets = <&rstctrl RST_UART3>;
+
+ reg-shift = <2>;
+
+ status = "disabled";
+ };
+
+ eth: eth@1e100000 {
+ compatible = "mediatek,mt7621-eth";
+ reg = <0x1e100000 0x20000>;
+ mediatek,ethsys = <&sysc>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <ð_pins>;
+
+ resets = <&rstctrl RST_FE>, <&rstctrl RST_GMAC>, <&rstctrl RST_MCM>;
+ reset-names = "fe", "gmac", "mcm";
+
+ clocks = <&clkctrl MT7621_CLK_GDMA>,
+ <&clkctrl MT7621_CLK_ETH>;
+ clock-names = "gmac", "fe";
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ mediatek,gmac-id = <0>;
+ phy-mode = "rgmii";
+ mediatek,switch = "mt7530";
+ mediatek,mcm;
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ };
+ };
+
+ mmc: mmc@1e130000 {
+ compatible = "mediatek,mt7621-mmc";
+ reg = <0x1e130000 0x4000>;
+
+ status = "disabled";
+
+ bus-width = <4>;
+ builtin-cd = <1>;
+ r_smpl = <1>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdxc_pins>;
+
+ clocks = <&clk50m>, <&clkctrl MT7621_CLK_SHXC>;
+ clock-names = "source", "hclk";
+
+ resets = <&rstctrl RST_SDXC>;
+ };
+
+ ssusb: usb@1e1c0000 {
+ compatible = "mediatek,mt7621-xhci", "mediatek,mtk-xhci";
+ reg = <0x1e1c0000 0x1000>, <0x1e1d0700 0x100>;
+ reg-names = "mac", "ippc";
+
+ clocks = <&clk48m>, <&clk48m>;
+ clock-names = "sys_ck", "ref_ck";
+
+ phys = <&u2port0 PHY_TYPE_USB2>,
+ <&u3port0 PHY_TYPE_USB3>,
+ <&u2port1 PHY_TYPE_USB2>;
+
+ status = "disabled";
+ };
+
+ u3phy: usb-phy@1e1d0000 {
+ compatible = "mediatek,mt7621-u3phy",
+ "mediatek,generic-tphy-v1";
+ reg = <0x1e1d0000 0x700>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+ status = "disabled";
+
+ u2port0: usb-phy@1e1d0800 {
+ reg = <0x1e1d0800 0x0100>;
+ #phy-cells = <1>;
+ clocks = <&clk48m>;
+ clock-names = "ref";
+ };
+
+ u3port0: usb-phy@1e1d0900 {
+ reg = <0x1e1d0900 0x0100>;
+ #phy-cells = <1>;
+ };
+
+ u2port1: usb-phy@1e1d1000 {
+ reg = <0x1e1d1000 0x0100>;
+ #phy-cells = <1>;
+ clocks = <&clk48m>;
+ clock-names = "ref";
+ };
+ };
+
+ i2c: i2c@1e000900 {
+ compatible = "i2c-gpio";
+
+ status = "disabled";
+
+ i2c-gpio,delay-us = <3>;
+
+ gpios = <&gpio0 3 1>, /* PIN3 as SDA */
+ <&gpio0 4 1>; /* PIN4 as CLK */
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+};
diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig
index 151b004..d46be50 100644
--- a/arch/mips/mach-mtmips/Kconfig
+++ b/arch/mips/mach-mtmips/Kconfig
@@ -9,6 +9,7 @@
config SYS_SOC
default "mt7620" if SOC_MT7620
+ default "mt7621" if SOC_MT7621
default "mt7628" if SOC_MT7628
config SYS_DCACHE_SIZE
@@ -18,25 +19,45 @@
default 32
config SYS_ICACHE_SIZE
- default 65536
+ default 65536 if SOC_MT7620 || SOC_MT7628
+ default 32768 if SOC_MT7621
config SYS_ICACHE_LINE_SIZE
default 32
+config SYS_SCACHE_LINE_SIZE
+ default 32 if SOC_MT7621
+
config SYS_TEXT_BASE
- default 0x9c000000 if !SPL
- default 0x80200000 if SPL
+ default 0x9c000000 if !SPL && !SOC_MT7621
+ default 0x80200000 if SPL || SOC_MT7621
config SPL_TEXT_BASE
- default 0x9c000000
+ default 0x9c000000 if !SOC_MT7621
+ default 0x80100000 if SOC_MT7621
+
+config SPL_SIZE_LIMIT
+ default 0x30000 if SOC_MT7621
+
+config TPL_TEXT_BASE
+ default 0xbfc00000 if SOC_MT7621
+
+config TPL_MAX_SIZE
+ default 4096 if SOC_MT7621
config SPL_PAYLOAD
default "u-boot-lzma.img" if SPL_LZMA
config BUILD_TARGET
- default "u-boot-with-spl.bin" if SPL
+ default "u-boot-with-spl.bin" if SPL && !SOC_MT7621
+ default "u-boot-lzma.img" if SOC_MT7621
default "u-boot.bin"
+config MAX_MEM_SIZE
+ int
+ default 256 if SOC_MT7620 || SOC_MT7628
+ default 512 if SOC_MT7621
+
choice
prompt "MediaTek MIPS SoC select"
@@ -55,6 +76,23 @@
help
This supports MediaTek MT7620.
+config SOC_MT7621
+ bool "MT7621"
+ select MIPS_CM
+ select MIPS_L2_CACHE
+ select SYS_CACHE_SHIFT_5
+ select SYS_MIPS_CACHE_INIT_RAM_LOAD
+ select PINCTRL_MT7621
+ select MTK_SERIAL
+ select REGMAP
+ select SYSCON
+ select BINMAN
+ select SUPPORT_TPL
+ select SPL_LOADER_SUPPORT if SPL
+ select SPL_INIT_STACK_WITHOUT_MALLOC_F if SPL
+ help
+ This supports MediaTek MT7621.
+
config SOC_MT7628
bool "MT7628"
select SYS_CACHE_SHIFT_5
@@ -80,6 +118,7 @@
endchoice
source "arch/mips/mach-mtmips/mt7620/Kconfig"
+source "arch/mips/mach-mtmips/mt7621/Kconfig"
source "arch/mips/mach-mtmips/mt7628/Kconfig"
endmenu
diff --git a/arch/mips/mach-mtmips/Makefile b/arch/mips/mach-mtmips/Makefile
index 4909b47..19f1e07 100644
--- a/arch/mips/mach-mtmips/Makefile
+++ b/arch/mips/mach-mtmips/Makefile
@@ -1,9 +1,13 @@
# SPDX-License-Identifier: GPL-2.0+
obj-y += cpu.o
+
+ifneq ($(CONFIG_SOC_MT7621),y)
obj-y += ddr_init.o
obj-y += ddr_cal.o
obj-$(CONFIG_SPL_BUILD) += spl.o
+endif
obj-$(CONFIG_SOC_MT7620) += mt7620/
+obj-$(CONFIG_SOC_MT7621) += mt7621/
obj-$(CONFIG_SOC_MT7628) += mt7628/
diff --git a/arch/mips/mach-mtmips/cpu.c b/arch/mips/mach-mtmips/cpu.c
index a4b5cff..f1e9022 100644
--- a/arch/mips/mach-mtmips/cpu.c
+++ b/arch/mips/mach-mtmips/cpu.c
@@ -16,7 +16,7 @@
int dram_init(void)
{
- gd->ram_size = get_ram_size((void *)KSEG1, SZ_256M);
+ gd->ram_size = get_ram_size((void *)KSEG1, CONFIG_MAX_MEM_SIZE << 20);
return 0;
}
diff --git a/arch/mips/mach-mtmips/mt7621/Kconfig b/arch/mips/mach-mtmips/mt7621/Kconfig
new file mode 100644
index 0000000..37d512c
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/Kconfig
@@ -0,0 +1,95 @@
+
+if SOC_MT7621
+
+menu "CPU & DDR configuration"
+
+config MT7621_CPU_FREQ
+ int "CPU Frequency (MHz)"
+ range 400 1200
+ default 880
+
+choice
+ prompt "DRAM Frequency"
+ default MT7621_DRAM_FREQ_1200
+
+config MT7621_DRAM_FREQ_400
+ bool "400MHz"
+
+config MT7621_DRAM_FREQ_800
+ bool "800MHz"
+
+config MT7621_DRAM_FREQ_1066
+ bool "1066MHz"
+
+config MT7621_DRAM_FREQ_1200
+ bool "1200MHz"
+
+endchoice
+
+choice
+ prompt "DDR2 timing parameters"
+ default MT7621_DRAM_DDR2_1024M
+
+config MT7621_DRAM_DDR2_512M
+ bool "64MB"
+
+config MT7621_DRAM_DDR2_1024M
+ bool "128MB"
+
+config MT7621_DRAM_DDR2_512M_W9751G6KB_A02_1066MHZ
+ bool "W9751G6KB_A02 @ 1066MHz (64MB)"
+
+config MT7621_DRAM_DDR2_1024M_W971GG6KB25_800MHZ
+ bool "W971GG6KB25 @ 800MHz (128MB)"
+
+config MT7621_DRAM_DDR2_1024M_W971GG6KB18_1066MHZ
+ bool "W971GG6KB18 @ 1066MHz (128MB)"
+
+endchoice
+
+choice
+ prompt "DDR3 timing parameters"
+ default MT7621_DRAM_DDR3_2048M
+
+config MT7621_DRAM_DDR3_1024M
+ bool "128MB"
+
+config MT7621_DRAM_DDR3_1024M_KGD
+ bool "128MB KGD (MT7621DA)"
+
+config MT7621_DRAM_DDR3_2048M
+ bool "256MB"
+
+config MT7621_DRAM_DDR3_4096M
+ bool "512MB"
+
+endchoice
+
+endmenu
+
+config DEBUG_UART_BOARD_INIT
+ default y
+
+config MT7621_BOOT_FROM_NAND
+ bool "Boot from NAND"
+ help
+ Select this if u-boot will boot from NAND flash. When booting from
+ NAND, SPL will be loaded by bootrom directly and no TPL is needed.
+
+choice
+ prompt "Board select"
+
+endchoice
+
+config SYS_CONFIG_NAME
+ string "Board configuration name"
+ default "mt7621" if BOARD_MT7621_RFB || BOARD_MT7621_NAND_RFB
+
+config SYS_BOARD
+ string "Board name"
+ default "mt7621" if BOARD_MT7621_RFB || BOARD_MT7621_NAND_RFB
+
+config SYS_VENDOR
+ default "mediatek" if BOARD_MT7621_RFB || BOARD_MT7621_NAND_RFB
+
+endif
diff --git a/arch/mips/mach-mtmips/mt7621/Makefile b/arch/mips/mach-mtmips/mt7621/Makefile
new file mode 100644
index 0000000..bf1b0bb
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/Makefile
@@ -0,0 +1,14 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-y += init.o
+obj-y += serial.o
+
+ifeq ($(CONFIG_SPL_BUILD),y)
+ifeq ($(CONFIG_TPL_BUILD),y)
+obj-y += tpl/
+else
+obj-y += spl/
+endif
+
+obj-y += sram_init.o
+endif
diff --git a/arch/mips/mach-mtmips/mt7621/init.c b/arch/mips/mach-mtmips/mt7621/init.c
new file mode 100644
index 0000000..d21848a
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/init.c
@@ -0,0 +1,246 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <clk.h>
+#include <dm.h>
+#include <dm/uclass.h>
+#include <dt-bindings/clock/mt7621-clk.h>
+#include <asm/global_data.h>
+#include <linux/io.h>
+#include <linux/bitfield.h>
+#include "mt7621.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char *const boot_mode[(CHIP_MODE_M >> CHIP_MODE_S) + 1] = {
+ [1] = "NAND 2K+64",
+ [2] = "SPI-NOR 3-Byte Addr",
+ [3] = "SPI-NOR 4-Byte Addr",
+ [10] = "NAND 2K+128",
+ [11] = "NAND 4K+128",
+ [12] = "NAND 4K+256",
+};
+
+int print_cpuinfo(void)
+{
+ void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+ u32 val, ver, eco, pkg, core, dram, chipmode;
+ u32 cpu_clk, ddr_clk, bus_clk, xtal_clk;
+ struct udevice *clkdev;
+ const char *bootdev;
+ struct clk clk;
+ int ret;
+
+ val = readl(sysc + SYSCTL_CHIP_REV_ID_REG);
+ ver = FIELD_GET(VER_ID_M, val);
+ eco = FIELD_GET(ECO_ID_M, val);
+ pkg = FIELD_GET(PKG_ID, val);
+ core = FIELD_GET(CPU_ID, val);
+
+ val = readl(sysc + SYSCTL_SYSCFG0_REG);
+ dram = FIELD_GET(DRAM_TYPE, val);
+ chipmode = FIELD_GET(CHIP_MODE_M, val);
+
+ bootdev = boot_mode[chipmode];
+ if (!bootdev)
+ bootdev = "Unsupported boot mode";
+
+ printf("CPU: MediaTek MT7621%c ver %u, eco %u\n",
+ core ? (pkg ? 'A' : 'N') : 'S', ver, eco);
+
+ printf("Boot: DDR%u, %s\n", dram ? 2 : 3, bootdev);
+
+ ret = uclass_get_device_by_driver(UCLASS_CLK, DM_DRIVER_GET(mt7621_clk),
+ &clkdev);
+ if (ret)
+ return ret;
+
+ clk.dev = clkdev;
+
+ clk.id = MT7621_CLK_CPU;
+ cpu_clk = clk_get_rate(&clk);
+
+ clk.id = MT7621_CLK_BUS;
+ bus_clk = clk_get_rate(&clk);
+
+ clk.id = MT7621_CLK_DDR;
+ ddr_clk = clk_get_rate(&clk);
+
+ clk.id = MT7621_CLK_XTAL;
+ xtal_clk = clk_get_rate(&clk);
+
+ /* Set final timer frequency */
+ if (cpu_clk)
+ gd->arch.timer_freq = cpu_clk / 2;
+
+ printf("Clock: CPU: %uMHz, DDR: %uMT/s, Bus: %uMHz, XTAL: %uMHz\n",
+ cpu_clk / 1000000, ddr_clk / 500000, bus_clk / 1000000,
+ xtal_clk / 1000000);
+
+ return 0;
+}
+
+unsigned long get_xtal_mhz(void)
+{
+ void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+ u32 bs, xtal_sel;
+
+ bs = readl(sysc + SYSCTL_SYSCFG0_REG);
+ xtal_sel = FIELD_GET(XTAL_MODE_SEL_M, bs);
+
+ if (xtal_sel <= 2)
+ return 20;
+ else if (xtal_sel <= 5)
+ return 40;
+ else
+ return 25;
+}
+
+static void xhci_config_40mhz(void __iomem *usbh)
+{
+ writel(FIELD_PREP(SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_M, 0x20) |
+ FIELD_PREP(SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_M, 0x20) |
+ FIELD_PREP(SSUSB_MAC3_SYS_CK_GATE_MODE_M, 2) |
+ FIELD_PREP(SSUSB_MAC2_SYS_CK_GATE_MODE_M, 2) | 0x10,
+ usbh + SSUSB_MAC_CK_CTRL_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_PREDIV_PE1D_M, 2) |
+ FIELD_PREP(SSUSB_PLL_PREDIV_U3_M, 1) |
+ FIELD_PREP(SSUSB_PLL_FBKDI_M, 4),
+ usbh + DA_SSUSB_U3PHYA_10_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_FBKDIV_PE2H_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_PE1D_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_PE1H_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_U3_M, 0x1e),
+ usbh + DA_SSUSB_PLL_FBKDIV_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_PCW_NCPO_U3_M, 0x1e400000),
+ usbh + DA_SSUSB_PLL_PCW_NCPO_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_DELTA1_PE1H_M, 0x25) |
+ FIELD_PREP(SSUSB_PLL_SSC_DELTA1_U3_M, 0x73),
+ usbh + DA_SSUSB_PLL_SSC_DELTA1_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_DELTA_U3_M, 0x71) |
+ FIELD_PREP(SSUSB_PLL_SSC_DELTA1_PE2D_M, 0x4a),
+ usbh + DA_SSUSB_U3PHYA_21_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_PRD_M, 0x140),
+ usbh + SSUSB_U3PHYA_9_REG);
+
+ writel(FIELD_PREP(SSUSB_SYSPLL_PCW_NCPO_M, 0x11c00000),
+ usbh + SSUSB_U3PHYA_3_REG);
+
+ writel(FIELD_PREP(SSUSB_PCIE_CLKDRV_AMP_M, 4) |
+ FIELD_PREP(SSUSB_SYSPLL_FBSEL_M, 1) |
+ FIELD_PREP(SSUSB_SYSPLL_PREDIV_M, 1),
+ usbh + SSUSB_U3PHYA_1_REG);
+
+ writel(FIELD_PREP(SSUSB_SYSPLL_FBDIV_M, 0x12) |
+ SSUSB_SYSPLL_VCO_DIV_SEL | SSUSB_SYSPLL_FPEN |
+ SSUSB_SYSPLL_MONCK_EN | SSUSB_SYSPLL_VOD_EN,
+ usbh + SSUSB_U3PHYA_2_REG);
+
+ writel(SSUSB_EQ_CURSEL | FIELD_PREP(SSUSB_RX_DAC_MUX_M, 8) |
+ FIELD_PREP(SSUSB_PCIE_SIGDET_VTH_M, 1) |
+ FIELD_PREP(SSUSB_PCIE_SIGDET_LPF_M, 1),
+ usbh + SSUSB_U3PHYA_11_REG);
+
+ writel(FIELD_PREP(SSUSB_RING_OSC_CNTEND_M, 0x1ff) |
+ FIELD_PREP(SSUSB_XTAL_OSC_CNTEND_M, 0x7f) |
+ SSUSB_RING_BYPASS_DET,
+ usbh + SSUSB_B2_ROSC_0_REG);
+
+ writel(FIELD_PREP(SSUSB_RING_OSC_FRC_RECAL_M, 3) |
+ SSUSB_RING_OSC_FRC_SEL,
+ usbh + SSUSB_B2_ROSC_1_REG);
+}
+
+static void xhci_config_25mhz(void __iomem *usbh)
+{
+ writel(FIELD_PREP(SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_M, 0x20) |
+ FIELD_PREP(SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_M, 0x20) |
+ FIELD_PREP(SSUSB_MAC3_SYS_CK_GATE_MODE_M, 2) |
+ FIELD_PREP(SSUSB_MAC2_SYS_CK_GATE_MODE_M, 2) | 0x10,
+ usbh + SSUSB_MAC_CK_CTRL_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_PREDIV_PE1D_M, 2) |
+ FIELD_PREP(SSUSB_PLL_FBKDI_M, 4),
+ usbh + DA_SSUSB_U3PHYA_10_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_FBKDIV_PE2H_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_PE1D_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_PE1H_M, 0x18) |
+ FIELD_PREP(SSUSB_PLL_FBKDIV_U3_M, 0x19),
+ usbh + DA_SSUSB_PLL_FBKDIV_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_PCW_NCPO_U3_M, 0x18000000),
+ usbh + DA_SSUSB_PLL_PCW_NCPO_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_DELTA1_PE1H_M, 0x25) |
+ FIELD_PREP(SSUSB_PLL_SSC_DELTA1_U3_M, 0x4a),
+ usbh + DA_SSUSB_PLL_SSC_DELTA1_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_DELTA_U3_M, 0x48) |
+ FIELD_PREP(SSUSB_PLL_SSC_DELTA1_PE2D_M, 0x4a),
+ usbh + DA_SSUSB_U3PHYA_21_REG);
+
+ writel(FIELD_PREP(SSUSB_PLL_SSC_PRD_M, 0x190),
+ usbh + SSUSB_U3PHYA_9_REG);
+
+ writel(FIELD_PREP(SSUSB_SYSPLL_PCW_NCPO_M, 0xe000000),
+ usbh + SSUSB_U3PHYA_3_REG);
+
+ writel(FIELD_PREP(SSUSB_PCIE_CLKDRV_AMP_M, 4) |
+ FIELD_PREP(SSUSB_SYSPLL_FBSEL_M, 1),
+ usbh + SSUSB_U3PHYA_1_REG);
+
+ writel(FIELD_PREP(SSUSB_SYSPLL_FBDIV_M, 0xf) |
+ SSUSB_SYSPLL_VCO_DIV_SEL | SSUSB_SYSPLL_FPEN |
+ SSUSB_SYSPLL_MONCK_EN | SSUSB_SYSPLL_VOD_EN,
+ usbh + SSUSB_U3PHYA_2_REG);
+
+ writel(SSUSB_EQ_CURSEL | FIELD_PREP(SSUSB_RX_DAC_MUX_M, 8) |
+ FIELD_PREP(SSUSB_PCIE_SIGDET_VTH_M, 1) |
+ FIELD_PREP(SSUSB_PCIE_SIGDET_LPF_M, 1),
+ usbh + SSUSB_U3PHYA_11_REG);
+
+ writel(FIELD_PREP(SSUSB_RING_OSC_CNTEND_M, 0x1ff) |
+ FIELD_PREP(SSUSB_XTAL_OSC_CNTEND_M, 0x7f) |
+ SSUSB_RING_BYPASS_DET,
+ usbh + SSUSB_B2_ROSC_0_REG);
+
+ writel(FIELD_PREP(SSUSB_RING_OSC_FRC_RECAL_M, 3) |
+ SSUSB_RING_OSC_FRC_SEL,
+ usbh + SSUSB_B2_ROSC_1_REG);
+}
+
+void lowlevel_init(void)
+{
+ void __iomem *usbh = ioremap_nocache(SSUSB_BASE, SSUSB_SIZE);
+ u32 xtal = get_xtal_mhz();
+
+ /* Setup USB xHCI */
+ if (xtal == 40)
+ xhci_config_40mhz(usbh);
+ else if (xtal == 25)
+ xhci_config_25mhz(usbh);
+}
+
+ulong notrace get_tbclk(void)
+{
+ return gd->arch.timer_freq;
+}
+
+void _machine_restart(void)
+{
+ void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+
+ while (1)
+ writel(SYS_RST, sysc + SYSCTL_RSTCTL_REG);
+}
diff --git a/arch/mips/mach-mtmips/mt7621/mt7621.h b/arch/mips/mach-mtmips/mt7621/mt7621.h
new file mode 100644
index 0000000..916cc99
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/mt7621.h
@@ -0,0 +1,229 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _MT7621_H_
+#define _MT7621_H_
+
+#define SYSCTL_BASE 0x1e000000
+#define SYSCTL_SIZE 0x100
+#define TIMER_BASE 0x1e000100
+#define TIMER_SIZE 0x100
+#define RBUS_BASE 0x1e000400
+#define RBUS_SIZE 0x100
+#define GPIO_BASE 0x1e000600
+#define GPIO_SIZE 0x100
+#define DMA_CFG_ARB_BASE 0x1e000800
+#define DMA_CFG_ARB_SIZE 0x100
+#define SPI_BASE 0x1e000b00
+#define SPI_SIZE 0x100
+#define UART1_BASE 0x1e000c00
+#define UART1_SIZE 0x100
+#define UART2_BASE 0x1e000d00
+#define UART2_SIZE 0x100
+#define UART3_BASE 0x1e000e00
+#define UART3_SIZE 0x100
+#define NFI_BASE 0x1e003000
+#define NFI_SIZE 0x800
+#define NFI_ECC_BASE 0x1e003800
+#define NFI_ECC_SIZE 0x800
+#define DRAMC_BASE 0x1e005000
+#define DRAMC_SIZE 0x1000
+#define FE_BASE 0x1e100000
+#define FE_SIZE 0xe000
+#define GMAC_BASE 0x1e110000
+#define GMAC_SIZE 0x8000
+#define SSUSB_BASE 0x1e1c0000
+#define SSUSB_SIZE 0x40000
+
+ /* GIC Base Address */
+#define MIPS_GIC_BASE 0x1fbc0000
+
+ /* CPC Base Address */
+#define MIPS_CPC_BASE 0x1fbf0000
+
+ /* Flash Memory-mapped Base Address */
+#define FLASH_MMAP_BASE 0x1fc00000
+#define TPL_INFO_OFFSET 0x40
+#define TPL_INFO_MAGIC 0x31323637 /* Magic "7621" */
+
+/* SRAM */
+#define FE_SRAM_BASE1 0x8000
+#define FE_SRAM_BASE2 0xa000
+
+/* SYSCTL_BASE */
+#define SYSCTL_CHIP_REV_ID_REG 0x0c
+#define CPU_ID 0x20000
+#define PKG_ID 0x10000
+#define VER_ID_S 8
+#define VER_ID_M 0xf00
+#define ECO_ID_S 0
+#define ECO_ID_M 0x0f
+
+#define SYSCTL_SYSCFG0_REG 0x10
+#define XTAL_MODE_SEL_S 6
+#define XTAL_MODE_SEL_M 0x1c0
+#define DRAM_TYPE 0x10
+#define CHIP_MODE_S 0
+#define CHIP_MODE_M 0x0f
+
+#define BOOT_SRAM_BASE_REG 0x20
+
+#define SYSCTL_CLKCFG0_REG 0x2c
+#define CPU_CLK_SEL_S 30
+#define CPU_CLK_SEL_M 0xc0000000
+#define MPLL_CFG_SEL_S 23
+#define MPLL_CFG_SEL_M 0x800000
+
+#define SYSCTL_RSTCTL_REG 0x34
+#define MCM_RST 0x04
+#define SYS_RST 0x01
+
+#define SYSCTL_CUR_CLK_STS_REG 0x44
+#define CUR_CPU_FDIV_S 8
+#define CUR_CPU_FDIV_M 0x1f00
+#define CUR_CPU_FFRAC_S 0
+#define CUR_CPU_FFRAC_M 0x1f
+
+#define SYSCTL_GPIOMODE_REG 0x60
+#define UART2_MODE_S 5
+#define UART2_MODE_M 0x60
+#define UART3_MODE_S 3
+#define UART3_MODE_M 0x18
+#define UART1_MODE 0x02
+
+/* RBUS_BASE */
+#define RBUS_DYN_CFG0_REG 0x0010
+#define CPU_FDIV_S 8
+#define CPU_FDIV_M 0x1f00
+#define CPU_FFRAC_S 0
+#define CPU_FFRAC_M 0x1f
+
+/* DMA_CFG_ARB_BASE */
+#define DMA_ROUTE_REG 0x000c
+
+/* SPI_BASE */
+#define SPI_SPACE_REG 0x003c
+#define FS_SLAVE_SEL_S 12
+#define FS_SLAVE_SEL_M 0x70000
+#define FS_CLK_SEL_S 0
+#define FS_CLK_SEL_M 0xfff
+
+/* FE_BASE */
+#define FE_RST_GLO_REG 0x0004
+#define FE_PSE_RAM 0x04
+#define FE_PSE_MEM_EN 0x02
+#define FE_PSE_RESET 0x01
+
+/* SSUSB_BASE */
+#define SSUSB_MAC_CK_CTRL_REG 0x10784
+#define SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_S 16
+#define SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_M 0xff0000
+#define SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_S 8
+#define SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_M 0xff00
+#define SSUSB_MAC3_SYS_CK_GATE_MODE_S 2
+#define SSUSB_MAC3_SYS_CK_GATE_MODE_M 0x0c
+#define SSUSB_MAC2_SYS_CK_GATE_MODE_S 0
+#define SSUSB_MAC2_SYS_CK_GATE_MODE_M 0x03
+
+#define SSUSB_B2_ROSC_0_REG 0x10a40
+#define SSUSB_RING_OSC_CNTEND_S 23
+#define SSUSB_RING_OSC_CNTEND_M 0xff800000
+#define SSUSB_XTAL_OSC_CNTEND_S 16
+#define SSUSB_XTAL_OSC_CNTEND_M 0x7f0000
+#define SSUSB_RING_BYPASS_DET 0x01
+
+#define SSUSB_B2_ROSC_1_REG 0x10a44
+#define SSUSB_RING_OSC_FRC_RECAL_S 17
+#define SSUSB_RING_OSC_FRC_RECAL_M 0x60000
+#define SSUSB_RING_OSC_FRC_SEL 0x01
+
+#define SSUSB_U3PHYA_1_REG 0x10b04
+#define SSUSB_PCIE_CLKDRV_AMP_S 27
+#define SSUSB_PCIE_CLKDRV_AMP_M 0x38000000
+#define SSUSB_SYSPLL_FBSEL_S 2
+#define SSUSB_SYSPLL_FBSEL_M 0x0c
+#define SSUSB_SYSPLL_PREDIV_S 0
+#define SSUSB_SYSPLL_PREDIV_M 0x03
+
+#define SSUSB_U3PHYA_2_REG 0x10b08
+#define SSUSB_SYSPLL_FBDIV_S 24
+#define SSUSB_SYSPLL_FBDIV_M 0x7f000000
+#define SSUSB_SYSPLL_VCO_DIV_SEL 0x200000
+#define SSUSB_SYSPLL_FPEN 0x2000
+#define SSUSB_SYSPLL_MONCK_EN 0x1000
+#define SSUSB_SYSPLL_VOD_EN 0x200
+
+#define SSUSB_U3PHYA_3_REG 0x10b10
+#define SSUSB_SYSPLL_PCW_NCPO_S 1
+#define SSUSB_SYSPLL_PCW_NCPO_M 0xfffffffe
+
+#define SSUSB_U3PHYA_9_REG 0x10b24
+#define SSUSB_PLL_SSC_PRD_S 0
+#define SSUSB_PLL_SSC_PRD_M 0xffff
+
+#define SSUSB_U3PHYA_11_REG 0x10b2c
+#define SSUSB_EQ_CURSEL 0x1000000
+#define SSUSB_RX_DAC_MUX_S 19
+#define SSUSB_RX_DAC_MUX_M 0xf80000
+#define SSUSB_PCIE_SIGDET_VTH_S 5
+#define SSUSB_PCIE_SIGDET_VTH_M 0x60
+#define SSUSB_PCIE_SIGDET_LPF_S 3
+#define SSUSB_PCIE_SIGDET_LPF_M 0x18
+
+#define DA_SSUSB_PLL_FBKDIV_REG 0x10c1c
+#define SSUSB_PLL_FBKDIV_PE2H_S 24
+#define SSUSB_PLL_FBKDIV_PE2H_M 0x7f000000
+#define SSUSB_PLL_FBKDIV_PE1D_S 16
+#define SSUSB_PLL_FBKDIV_PE1D_M 0x7f0000
+#define SSUSB_PLL_FBKDIV_PE1H_S 8
+#define SSUSB_PLL_FBKDIV_PE1H_M 0x7f00
+#define SSUSB_PLL_FBKDIV_U3_S 0
+#define SSUSB_PLL_FBKDIV_U3_M 0x7f
+
+#define DA_SSUSB_U3PHYA_10_REG 0x10c20
+#define SSUSB_PLL_PREDIV_PE1D_S 18
+#define SSUSB_PLL_PREDIV_PE1D_M 0xc0000
+#define SSUSB_PLL_PREDIV_U3_S 8
+#define SSUSB_PLL_PREDIV_U3_M 0x300
+#define SSUSB_PLL_FBKDI_S 0
+#define SSUSB_PLL_FBKDI_M 0x07
+
+#define DA_SSUSB_PLL_PCW_NCPO_REG 0x10c24
+#define SSUSB_PLL_PCW_NCPO_U3_S 0
+#define SSUSB_PLL_PCW_NCPO_U3_M 0x7fffffff
+
+#define DA_SSUSB_PLL_SSC_DELTA1_REG 0x10c38
+#define SSUSB_PLL_SSC_DELTA1_PE1H_S 16
+#define SSUSB_PLL_SSC_DELTA1_PE1H_M 0xffff0000
+#define SSUSB_PLL_SSC_DELTA1_U3_S 0
+#define SSUSB_PLL_SSC_DELTA1_U3_M 0xffff
+
+#define DA_SSUSB_U3PHYA_21_REG 0x10c40
+#define SSUSB_PLL_SSC_DELTA_U3_S 16
+#define SSUSB_PLL_SSC_DELTA_U3_M 0xffff0000
+#define SSUSB_PLL_SSC_DELTA1_PE2D_S 0
+#define SSUSB_PLL_SSC_DELTA1_PE2D_M 0xffff
+
+/* MT7621 specific CM values */
+
+/* GCR_REGx_BASE */
+#define GCR_REG0_BASE_VALUE 0x1c000000
+#define GCR_REG1_BASE_VALUE 0x60000000
+#define GCR_REG2_BASE_VALUE 0x1c000000
+#define GCR_REG3_BASE_VALUE 0x1c000000
+
+/* GCR_REGx_MASK */
+#define GCR_REG0_MASK_VALUE 0x0000fc00 /* 64M Bus */
+#define GCR_REG1_MASK_VALUE 0x0000f000 /* 256M PCI Mem */
+#define GCR_REG2_MASK_VALUE 0x0000fc00 /* unused */
+#define GCR_REG3_MASK_VALUE 0x0000fc00 /* unused */
+
+#ifndef __ASSEMBLY__
+unsigned long get_xtal_mhz(void);
+#endif
+
+#endif /* _MT7621_H_ */
diff --git a/arch/mips/mach-mtmips/mt7621/serial.c b/arch/mips/mach-mtmips/mt7621/serial.c
new file mode 100644
index 0000000..0ccc71d
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/serial.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/io.h>
+#include <asm/addrspace.h>
+#include "mt7621.h"
+
+void board_debug_uart_init(void)
+{
+ void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+
+#if CONFIG_DEBUG_UART_BASE == 0xbe000c00 /* KSEG1ADDR(UART1_BASE) */
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART1_MODE);
+#elif CONFIG_DEBUG_UART_BASE == 0xbe000d00 /* KSEG1ADDR(UART2_BASE) */
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART2_MODE_M);
+#elif CONFIG_DEBUG_UART_BASE == 0xbe000e00 /* KSEG1ADDR(UART3_BASE) */
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART3_MODE_M);
+#endif
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/Makefile b/arch/mips/mach-mtmips/mt7621/spl/Makefile
new file mode 100644
index 0000000..ebe54e7
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/Makefile
@@ -0,0 +1,9 @@
+
+extra-y += start.o
+
+obj-y += spl.o
+obj-y += cps.o
+obj-y += dram.o
+obj-y += serial.o
+obj-y += launch.o
+obj-y += launch_ll.o
diff --git a/arch/mips/mach-mtmips/mt7621/spl/cps.c b/arch/mips/mach-mtmips/mt7621/spl/cps.c
new file mode 100644
index 0000000..779e646
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/cps.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/io.h>
+#include <asm/addrspace.h>
+#include <asm/mipsregs.h>
+#include <asm/cm.h>
+#include <linux/bitfield.h>
+#include "../mt7621.h"
+
+/* GIC Shared Register Bases */
+#define GIC_SH_POL_BASE 0x100
+#define GIC_SH_TRIG_BASE 0x180
+#define GIC_SH_RMASK_BASE 0x300
+#define GIC_SH_SMASK_BASE 0x380
+#define GIC_SH_MASK_BASE 0x400
+#define GIC_SH_PEND_BASE 0x480
+#define GIC_SH_MAP_PIN_BASE 0x500
+#define GIC_SH_MAP_VPE_BASE 0x2000
+
+/* GIC Registers */
+#define GIC_SH_POL31_0 (GIC_SH_POL_BASE + 0x00)
+#define GIC_SH_POL63_32 (GIC_SH_POL_BASE + 0x04)
+
+#define GIC_SH_TRIG31_0 (GIC_SH_TRIG_BASE + 0x00)
+#define GIC_SH_TRIG63_32 (GIC_SH_TRIG_BASE + 0x04)
+
+#define GIC_SH_RMASK31_0 (GIC_SH_RMASK_BASE + 0x00)
+#define GIC_SH_RMASK63_32 (GIC_SH_RMASK_BASE + 0x04)
+
+#define GIC_SH_SMASK31_0 (GIC_SH_SMASK_BASE + 0x00)
+#define GIC_SH_SMASK63_32 (GIC_SH_SMASK_BASE + 0x04)
+
+#define GIC_SH_MAP_PIN(n) (GIC_SH_MAP_PIN_BASE + (n) * 4)
+
+#define GIC_SH_MAP_VPE(n, v) (GIC_SH_MAP_VPE_BASE + (n) * 0x20 + ((v) / 32) * 4)
+#define GIC_SH_MAP_VPE31_0(n) GIC_SH_MAP_VPE(n, 0)
+
+/* GIC_SH_MAP_PIN fields */
+#define GIC_MAP_TO_PIN BIT(31)
+#define GIC_MAP_TO_NMI BIT(30)
+#define GIC_MAP GENMASK(5, 0)
+#define GIC_MAP_SHIFT 0
+
+static void cm_init(void __iomem *cm_base)
+{
+ u32 gcrcfg, num_cores;
+
+ gcrcfg = readl(cm_base + GCR_CONFIG);
+ num_cores = FIELD_GET(GCR_CONFIG_PCORES, gcrcfg) + 1;
+
+ writel((1 << num_cores) - 1, cm_base + GCR_ACCESS);
+
+ writel(GCR_REG0_BASE_VALUE, cm_base + GCR_REG0_BASE);
+ writel(GCR_REG1_BASE_VALUE, cm_base + GCR_REG1_BASE);
+ writel(GCR_REG2_BASE_VALUE, cm_base + GCR_REG2_BASE);
+ writel(GCR_REG3_BASE_VALUE, cm_base + GCR_REG3_BASE);
+
+ clrsetbits_32(cm_base + GCR_REG0_MASK,
+ GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
+ FIELD_PREP(GCR_REGn_MASK_ADDRMASK, GCR_REG0_MASK_VALUE) |
+ GCR_REGn_MASK_CMTGT_IOCU0);
+
+ clrsetbits_32(cm_base + GCR_REG1_MASK,
+ GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
+ FIELD_PREP(GCR_REGn_MASK_ADDRMASK, GCR_REG1_MASK_VALUE) |
+ GCR_REGn_MASK_CMTGT_IOCU0);
+
+ clrsetbits_32(cm_base + GCR_REG2_MASK,
+ GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
+ FIELD_PREP(GCR_REGn_MASK_ADDRMASK, GCR_REG2_MASK_VALUE) |
+ GCR_REGn_MASK_CMTGT_IOCU0);
+
+ clrsetbits_32(cm_base + GCR_REG3_MASK,
+ GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
+ FIELD_PREP(GCR_REGn_MASK_ADDRMASK, GCR_REG3_MASK_VALUE) |
+ GCR_REGn_MASK_CMTGT_IOCU0);
+
+ clrbits_32(cm_base + GCR_BASE, CM_DEFAULT_TARGET_MASK);
+ setbits_32(cm_base + GCR_CONTROL, GCR_CONTROL_SYNCCTL);
+}
+
+static void gic_init(void)
+{
+ void __iomem *gic_base = (void *)KSEG1ADDR(MIPS_GIC_BASE);
+ int i;
+
+ /* Interrupt 0..5: Level Trigger, Active High */
+ writel(0, gic_base + GIC_SH_TRIG31_0);
+ writel(0x3f, gic_base + GIC_SH_RMASK31_0);
+ writel(0x3f, gic_base + GIC_SH_POL31_0);
+ writel(0x3f, gic_base + GIC_SH_SMASK31_0);
+
+ /* Interrupt 56..63: Edge Trigger, Rising Edge */
+ /* Hardcoded to set up the last 8 external interrupts for IPI. */
+ writel(0xff000000, gic_base + GIC_SH_TRIG63_32);
+ writel(0xff000000, gic_base + GIC_SH_RMASK63_32);
+ writel(0xff000000, gic_base + GIC_SH_POL63_32);
+ writel(0xff000000, gic_base + GIC_SH_SMASK63_32);
+
+ /* Map interrupt source to particular hardware interrupt pin */
+ /* source {0,1,2,3,4,5} -> pin {0,0,4,3,0,5} */
+ writel(GIC_MAP_TO_PIN | 0, gic_base + GIC_SH_MAP_PIN(0));
+ writel(GIC_MAP_TO_PIN | 0, gic_base + GIC_SH_MAP_PIN(1));
+ writel(GIC_MAP_TO_PIN | 4, gic_base + GIC_SH_MAP_PIN(2));
+ writel(GIC_MAP_TO_PIN | 3, gic_base + GIC_SH_MAP_PIN(3));
+ writel(GIC_MAP_TO_PIN | 0, gic_base + GIC_SH_MAP_PIN(4));
+ writel(GIC_MAP_TO_PIN | 5, gic_base + GIC_SH_MAP_PIN(5));
+
+ /* source 56~59 -> pin 1, 60~63 -> pin 2 */
+ writel(GIC_MAP_TO_PIN | 1, gic_base + GIC_SH_MAP_PIN(56));
+ writel(GIC_MAP_TO_PIN | 1, gic_base + GIC_SH_MAP_PIN(57));
+ writel(GIC_MAP_TO_PIN | 1, gic_base + GIC_SH_MAP_PIN(58));
+ writel(GIC_MAP_TO_PIN | 1, gic_base + GIC_SH_MAP_PIN(59));
+ writel(GIC_MAP_TO_PIN | 2, gic_base + GIC_SH_MAP_PIN(60));
+ writel(GIC_MAP_TO_PIN | 2, gic_base + GIC_SH_MAP_PIN(61));
+ writel(GIC_MAP_TO_PIN | 2, gic_base + GIC_SH_MAP_PIN(62));
+ writel(GIC_MAP_TO_PIN | 2, gic_base + GIC_SH_MAP_PIN(63));
+
+ /* Interrupt map to VPE (bit mask) */
+ for (i = 0; i < 32; i++)
+ writel(BIT(0), gic_base + GIC_SH_MAP_VPE31_0(i));
+
+ /*
+ * Direct GIC_int 56..63 to vpe 0..3
+ * MIPS Linux convention that last 16 interrupts implemented be set
+ * aside for IPI signaling.
+ * The actual interrupts are tied low and software sends interrupts
+ * via GIC_SH_WEDGE writes.
+ */
+ for (i = 0; i < 4; i++) {
+ writel(BIT(i), gic_base + GIC_SH_MAP_VPE31_0(i + 56));
+ writel(BIT(i), gic_base + GIC_SH_MAP_VPE31_0(i + 60));
+ }
+}
+
+void mt7621_cps_init(void)
+{
+ void __iomem *cm_base = (void *)KSEG1ADDR(CONFIG_MIPS_CM_BASE);
+
+ /* Enable GIC */
+ writel(MIPS_GIC_BASE | GCR_GIC_EN, cm_base + GCR_GIC_BASE);
+
+ /* Enable CPC */
+ writel(MIPS_CPC_BASE | GCR_CPC_EN, cm_base + GCR_CPC_BASE);
+
+ gic_init();
+ cm_init(cm_base);
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/dram.c b/arch/mips/mach-mtmips/mt7621/spl/dram.c
new file mode 100644
index 0000000..100adfb
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/dram.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <vsprintf.h>
+#include <asm/io.h>
+#include <asm/sections.h>
+#include <asm/byteorder.h>
+#include <asm/addrspace.h>
+#include <linux/string.h>
+#include "../mt7621.h"
+#include "dram.h"
+
+static const u32 ddr2_act[DDR_PARAM_SIZE] = {
+#if defined(CONFIG_MT7621_DRAM_DDR2_512M)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x22174441,
+ 0x00000000, 0xF0748661, 0x40001273, 0x9F0A0481,
+ 0x0304692F, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000000, 0x07100000,
+ 0x00001B63, 0x00002000, 0x00004000, 0x00006000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+#elif defined(CONFIG_MT7621_DRAM_DDR2_512M_W9751G6KB_A02_1066MHZ)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x33484584,
+ 0x00000000, 0xF07486A1, 0x50001273, 0x9F010481,
+ 0x0304693F, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000010, 0x07100000,
+ 0x00001F73, 0x00002000, 0x00004000, 0x00006000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+#elif defined(CONFIG_MT7621_DRAM_DDR2_1024M_W971GG6KB25_800MHZ)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x22174430,
+ 0x01000000, 0xF0748661, 0x40001273, 0x9F0F0481,
+ 0x0304692F, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000000, 0x07100000,
+ 0x00001B63, 0x00002000, 0x00004000, 0x00006000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+#elif defined(CONFIG_MT7621_DRAM_DDR2_1024M_W971GG6KB18_1066MHZ)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x33484584,
+ 0x01000000, 0xF07486A1, 0x50001273, 0x9F070481,
+ 0x0304693F, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000010, 0x07100000,
+ 0x00001F73, 0x00002000, 0x00004000, 0x00006000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+#else /* CONFIG_MT7621_DRAM_DDR2_1024M */
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x22174441,
+ 0x01000000, 0xF0748661, 0x40001273, 0x9F0F0481,
+ 0x0304692F, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000000, 0x07100000,
+ 0x00001B63, 0x00002000, 0x00004000, 0x00006000,
+ 0x00000000, 0x00000000, 0x00000000, 0x00000000,
+#endif
+};
+
+static const u32 ddr3_act[DDR_PARAM_SIZE] = {
+#if defined(CONFIG_MT7621_DRAM_DDR3_1024M)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x44694683,
+ 0x01000000, 0xF07486A1, 0xC287221D, 0x9F060481,
+ 0x03046948, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000210, 0x07100000,
+ 0x00001B61, 0x00002040, 0x00004010, 0x00006000,
+ 0x0C000000, 0x07070000, 0x00000000, 0x00000000,
+#elif defined(CONFIG_MT7621_DRAM_DDR3_4096M)
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x44694683,
+ 0x01000000, 0xF07486A1, 0xC287221D, 0x9F0F0481,
+ 0x03046948, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000240, 0x07100000,
+ 0x00001B61, 0x00002040, 0x00004010, 0x00006000,
+ 0x0C000000, 0x07070000, 0x00000000, 0x00000000,
+#elif defined(CONFIG_MT7621_DRAM_DDR3_1024M_KGD)
+ 0xFF00FF00, 0xFF00FF00, 0x00000007, 0x44694683,
+ 0x01000000, 0xF07406A1, 0xC287221D, 0x9F060481,
+ 0x03046923, 0x152f2842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000210, 0x07100000,
+ 0x00001B61, 0x00002040, 0x00004010, 0x00006000,
+ 0x0C000000, 0x07070000, 0x000C0000, 0x00000000,
+#else /* CONFIG_MT7621_DRAM_DDR3_2048M */
+ 0xAA00AA00, 0xAA00AA00, 0x00000007, 0x44694673,
+ 0x01000000, 0xF07486A1, 0xC287221D, 0x9F050481,
+ 0x03046948, 0x15602842, 0x00008888, 0x88888888,
+ 0x00000000, 0x00000000, 0x00000220, 0x07100000,
+ 0x00001B61, 0x00002040, 0x00004010, 0x00006000,
+ 0x0C000000, 0x07070000, 0x00000000, 0x00000000,
+#endif
+};
+
+#if defined(CONFIG_MT7621_DRAM_FREQ_400)
+#define DDR_FREQ_PARAM 0x41000000
+#elif defined(CONFIG_MT7621_DRAM_FREQ_1066)
+#define DDR_FREQ_PARAM 0x21000000
+#elif defined(CONFIG_MT7621_DRAM_FREQ_1200)
+#define DDR_FREQ_PARAM 0x11000000
+#else /* CONFIG_MT7621_DRAM_FREQ_800 */
+#define DDR_FREQ_PARAM 0x31000000
+#endif
+
+#define RG_MEPL_FBDIV_S 4
+#define RG_MEPL_FBDIV_M 0x7f
+
+static inline void word_copy(u32 *dest, const u32 *src, u32 count)
+{
+ u32 i;
+
+ for (i = 0; i < count; i++)
+ dest[i] = src[i];
+}
+
+static u32 calc_cpu_pll_val(void)
+{
+ u32 div, baseval, fb;
+
+ div = get_xtal_mhz();
+
+ if (div == 40) {
+ div /= 2;
+ baseval = 0xc0005802;
+ } else {
+ baseval = 0xc0004802;
+ }
+
+ fb = CONFIG_MT7621_CPU_FREQ / div - 1;
+ if (fb > RG_MEPL_FBDIV_M)
+ fb = RG_MEPL_FBDIV_M;
+
+ return baseval | (fb << RG_MEPL_FBDIV_S);
+}
+
+void prepare_stage_bin(void)
+{
+ u32 stage_size;
+
+ const struct stage_header *stock_stage_bin =
+ (const struct stage_header *)__image_copy_end;
+
+ struct stage_header *new_stage_bin =
+ (struct stage_header *)STAGE_LOAD_ADDR;
+
+ if (be32_to_cpu(stock_stage_bin->ep) != STAGE_LOAD_ADDR)
+ panic("Invalid DDR stage binary blob\n");
+
+ stage_size = be32_to_cpu(stock_stage_bin->stage_size);
+
+ word_copy((u32 *)new_stage_bin, (const u32 *)stock_stage_bin,
+ (stage_size + sizeof(u32) - 1) / sizeof(u32));
+
+ word_copy(new_stage_bin->ddr2_act, ddr2_act, DDR_PARAM_SIZE);
+ word_copy(new_stage_bin->ddr3_act, ddr3_act, DDR_PARAM_SIZE);
+
+ new_stage_bin->cpu_pll_cfg = calc_cpu_pll_val();
+ new_stage_bin->ddr_pll_cfg = DDR_FREQ_PARAM;
+ new_stage_bin->baudrate = CONFIG_BAUDRATE;
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/dram.h b/arch/mips/mach-mtmips/mt7621/spl/dram.h
new file mode 100644
index 0000000..7322c58
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/dram.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _MT7621_DRAM_H_
+#define _MT7621_DRAM_H_
+
+#define STAGE_LOAD_ADDR 0xBE108800
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+
+#define DDR_PARAM_SIZE 24
+
+struct stage_header {
+ u32 jump_insn[2];
+ u32 ep;
+ u32 stage_size;
+ u32 has_stage2;
+ u32 next_ep;
+ u32 next_size;
+ u32 next_offset;
+ u32 cpu_pll_cfg;
+ u32 ddr_pll_cfg;
+ u32 reserved2[6];
+ char build_tag[32];
+ u32 ddr3_act[DDR_PARAM_SIZE];
+ u32 padding1[2];
+ u32 ddr2_act[DDR_PARAM_SIZE];
+ u32 padding2[2];
+ u32 baudrate;
+ u32 padding3;
+};
+#endif
+
+#endif /* _MT7621_DRAM_H_ */
diff --git a/arch/mips/mach-mtmips/mt7621/spl/launch.c b/arch/mips/mach-mtmips/mt7621/spl/launch.c
new file mode 100644
index 0000000..37c20a5
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/launch.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/io.h>
+#include <asm/cm.h>
+#include <asm/sections.h>
+#include <asm/addrspace.h>
+#include <asm/mipsmtregs.h>
+#include <linux/sizes.h>
+#include <time.h>
+#include <cpu_func.h>
+#include "launch.h"
+#include "../mt7621.h"
+
+/* Cluster Power Controller (CPC) offsets */
+#define CPC_CL_OTHER 0x2010
+#define CPC_CO_CMD 0x4000
+
+/* CPC_CL_OTHER fields */
+#define CPC_CL_OTHER_CORENUM_SHIFT 16
+#define CPC_CL_OTHER_CORENUM GENMASK(23, 16)
+
+/* CPC_CO_CMD */
+#define PWR_UP 3
+
+#define NUM_CORES 2
+#define NUM_CPUS 4
+#define WAIT_CPUS_TIMEOUT 4000
+
+static void copy_launch_wait_code(void)
+{
+ memset((void *)KSEG1, 0, SZ_4K);
+
+ memcpy((void *)KSEG1ADDR(LAUNCH_WAITCODE),
+ &launch_wait_code_start,
+ &launch_wait_code_end - &launch_wait_code_start);
+
+ invalidate_dcache_range(KSEG0, SZ_4K);
+}
+
+static void bootup_secondary_core(void)
+{
+ void __iomem *cpcbase = (void __iomem *)KSEG1ADDR(MIPS_CPC_BASE);
+ int i;
+
+ for (i = 1; i < NUM_CORES; i++) {
+ writel(i << CPC_CL_OTHER_CORENUM_SHIFT, cpcbase + CPC_CL_OTHER);
+ writel(PWR_UP, cpcbase + CPC_CO_CMD);
+ }
+}
+
+void secondary_cpu_init(void)
+{
+ void __iomem *sysc = (void __iomem *)KSEG1ADDR(SYSCTL_BASE);
+ u32 i, dual_core = 0, cpuready = 1, cpumask = 0x03;
+ ulong wait_tick;
+ struct cpulaunch_t *c;
+
+ /* Copy LAUNCH wait code used by other VPEs */
+ copy_launch_wait_code();
+
+ dual_core = readl(sysc + SYSCTL_CHIP_REV_ID_REG) & CPU_ID;
+
+ if (dual_core) {
+ /* Bootup secondary core for MT7621A */
+ cpumask = 0x0f;
+
+ /* Make BootROM/TPL redirect Core1's bootup flow to our entry point */
+ writel((uintptr_t)&_start, sysc + BOOT_SRAM_BASE_REG);
+
+ bootup_secondary_core();
+ }
+
+ /* Join the coherent domain */
+ join_coherent_domain(dual_core ? 2 : 1);
+
+ /* Bootup Core0/VPE1 */
+ boot_vpe1();
+
+ /* Wait for all CPU ready */
+ wait_tick = get_timer(0) + WAIT_CPUS_TIMEOUT;
+
+ while (time_before(get_timer(0), wait_tick)) {
+ /* CPU0 is obviously ready */
+ for (i = 1; i < NUM_CPUS; i++) {
+ c = (struct cpulaunch_t *)(KSEG0ADDR(CPULAUNCH) +
+ (i << LOG2CPULAUNCH));
+
+ if (c->flags & LAUNCH_FREADY)
+ cpuready |= BIT(i);
+ }
+
+ if ((cpuready & cpumask) == cpumask)
+ break;
+ }
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/launch.h b/arch/mips/mach-mtmips/mt7621/spl/launch.h
new file mode 100644
index 0000000..f34250d
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/launch.h
@@ -0,0 +1,52 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#ifndef _LAUNCH_H_
+#define _LAUNCH_H_
+
+#ifndef __ASSEMBLY__
+
+struct cpulaunch_t {
+ unsigned long pc;
+ unsigned long gp;
+ unsigned long sp;
+ unsigned long a0;
+ unsigned long _pad[3]; /* pad to cache line size to avoid thrashing */
+ unsigned long flags;
+};
+
+extern char launch_wait_code_start;
+extern char launch_wait_code_end;
+
+void join_coherent_domain(int ncores);
+void boot_vpe1(void);
+
+#else
+
+#define LAUNCH_PC 0
+#define LAUNCH_GP 4
+#define LAUNCH_SP 8
+#define LAUNCH_A0 12
+#define LAUNCH_FLAGS 28
+
+#endif
+
+#define LOG2CPULAUNCH 5
+
+#define LAUNCH_FREADY 1
+#define LAUNCH_FGO 2
+#define LAUNCH_FGONE 4
+
+#define LAUNCH_WAITCODE 0x00000d00
+#define SCRLAUNCH 0x00000e00
+#define CPULAUNCH 0x00000f00
+#define NCPULAUNCH 8
+
+/* Polling period in count cycles for secondary CPU's */
+#define LAUNCHPERIOD 10000
+
+#endif /* _LAUNCH_H_ */
diff --git a/arch/mips/mach-mtmips/mt7621/spl/launch_ll.S b/arch/mips/mach-mtmips/mt7621/spl/launch_ll.S
new file mode 100644
index 0000000..32d28c7
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/launch_ll.S
@@ -0,0 +1,339 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/cm.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/cacheops.h>
+#include <asm/mipsregs.h>
+#include <asm/addrspace.h>
+#include <asm/mipsmtregs.h>
+#include "launch.h"
+
+ .macro cache_loop curr, end, line_sz, op
+10: cache \op, 0(\curr)
+ PTR_ADDU \curr, \curr, \line_sz
+ bne \curr, \end, 10b
+ .endm
+
+ .set mt
+
+/*
+ * Join the coherent domain
+ * a0 = number of cores
+ */
+LEAF(join_coherent_domain)
+ /*
+ * Enable coherence and allow interventions from all other cores.
+ * (Write access enabled via GCR_ACCESS by core 0.)
+ */
+ li t1, 1
+ sll t1, a0
+ addiu t1, -1
+
+ li t0, KSEG1ADDR(CONFIG_MIPS_CM_BASE)
+ sw t1, GCR_Cx_COHERENCE(t0)
+ ehb
+
+ move t2, zero
+
+_next_coherent_core:
+ sll t1, t2, GCR_Cx_OTHER_CORENUM_SHIFT
+ sw t1, GCR_Cx_OTHER(t0)
+
+_busy_wait_coherent_core:
+ lw t1, GCR_CO_COHERENCE(t0)
+ beqz t1, _busy_wait_coherent_core
+
+ addiu t2, 1
+ bne t2, a0, _next_coherent_core
+
+ jr ra
+ END(join_coherent_domain)
+
+/*
+ * All VPEs other than VPE0 will go here.
+ */
+LEAF(launch_vpe_entry)
+ mfc0 t0, CP0_EBASE
+ and t0, t0, MIPS_EBASE_CPUNUM
+
+ /* per-VPE cpulaunch_t */
+ li a0, KSEG0ADDR(CPULAUNCH)
+ sll t1, t0, LOG2CPULAUNCH
+ addu a0, t1
+
+ /* Set CPU online flag */
+ li t0, LAUNCH_FREADY
+ sw t0, LAUNCH_FLAGS(a0)
+
+ /* Enable count interrupt in mask, but do not enable interrupts */
+ mfc0 t0, CP0_STATUS
+ ori t0, STATUSF_IP7
+ mtc0 t0, CP0_STATUS
+
+ /* VPEs executing in wait code do not need a stack */
+ li t9, KSEG0ADDR(LAUNCH_WAITCODE)
+ jr t9
+ END(launch_vpe_entry)
+
+/*
+ * This function will not be executed in place.
+ * It will be copied into memory, and VPEs other than VPE0 will be
+ * started to run into this in-memory function.
+ */
+LEAF(launch_wait_code)
+ .globl launch_wait_code_start
+launch_wait_code_start:
+
+ move t0, a0
+
+start_poll:
+ /* Poll CPU go flag */
+ mtc0 zero, CP0_COUNT
+ li t1, LAUNCHPERIOD
+ mtc0 t1, CP0_COMPARE
+
+time_wait:
+ /* Software wait */
+ mfc0 t2, CP0_COUNT
+ subu t2, t1
+ bltz t2, time_wait
+
+ /* Check the launch flag */
+ lw t3, LAUNCH_FLAGS(t0)
+ and t3, LAUNCH_FGO
+ beqz t3, start_poll
+
+ /* Reset the counter and interrupts to give naive clients a chance */
+ mfc0 t1, CP0_STATUS
+ ins t1, zero, STATUSB_IP7, 1
+ mtc0 t1, CP0_STATUS
+
+ mfc0 t1, CP0_COUNT
+ subu t1, 1
+ mtc0 t1, CP0_COMPARE
+
+ /* Jump to kernel */
+ lw t9, LAUNCH_PC(t0)
+ lw gp, LAUNCH_GP(t0)
+ lw sp, LAUNCH_SP(t0)
+ lw a0, LAUNCH_A0(t0)
+ move a1, zero
+ move a2, zero
+ move a3, zero
+ ori t3, LAUNCH_FGONE
+ sw t3, LAUNCH_FLAGS(t0)
+
+ jr t9
+
+ .globl launch_wait_code_end
+launch_wait_code_end:
+ END(launch_wait_code)
+
+/*
+ * Core1 will go here.
+ */
+LEAF(launch_core_entry)
+ /* Disable caches */
+ bal mips_cache_disable
+
+ /* Initialize L1 cache only */
+ li a0, CONFIG_SYS_ICACHE_SIZE
+ li a1, CONFIG_SYS_ICACHE_LINE_SIZE
+ li a2, CONFIG_SYS_DCACHE_SIZE
+ li a3, CONFIG_SYS_DCACHE_LINE_SIZE
+
+ mtc0 zero, CP0_TAGLO
+ mtc0 zero, CP0_TAGLO, 2
+ ehb
+
+ /*
+ * Initialize the I-cache first,
+ */
+ li t0, KSEG0
+ addu t1, t0, a0
+ /* clear tag to invalidate */
+ cache_loop t0, t1, a1, INDEX_STORE_TAG_I
+#ifdef CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD
+ /* fill once, so data field parity is correct */
+ PTR_LI t0, KSEG0
+ cache_loop t0, t1, a1, FILL
+ /* invalidate again - prudent but not strictly necessary */
+ PTR_LI t0, KSEG0
+ cache_loop t0, t1, a1, INDEX_STORE_TAG_I
+#endif
+
+ /*
+ * then initialize D-cache.
+ */
+ PTR_LI t0, KSEG0
+ PTR_ADDU t1, t0, a2
+ /* clear all tags */
+ cache_loop t0, t1, a3, INDEX_STORE_TAG_D
+#ifdef CONFIG_SYS_MIPS_CACHE_INIT_RAM_LOAD
+ /* load from each line (in cached space) */
+ PTR_LI t0, KSEG0
+2: LONG_L zero, 0(t0)
+ PTR_ADDU t0, a3
+ bne t0, t1, 2b
+ /* clear all tags */
+ PTR_LI t0, KSEG0
+ cache_loop t0, t1, a3, INDEX_STORE_TAG_D
+#endif
+
+ /* Set Cache Mode */
+ mfc0 t0, CP0_CONFIG
+ li t1, CONF_CM_CACHABLE_COW
+ ins t0, t1, 0, 3
+ mtc0 t0, CP0_CONFIG
+
+ /* Join the coherent domain */
+ li a0, 2
+ bal join_coherent_domain
+
+ /* Bootup Core0/VPE1 */
+ bal boot_vpe1
+
+ b launch_vpe_entry
+ END(launch_core_entry)
+
+/*
+ * Bootup VPE1.
+ * This subroutine must be executed from VPE0 with VPECONF0[MVP] already set.
+ */
+LEAF(boot_vpe1)
+ mfc0 t0, CP0_MVPCONF0
+
+ /* a0 = number of TCs - 1 */
+ ext a0, t0, MVPCONF0_PTC_SHIFT, 8
+ beqz a0, _vpe1_init_done
+
+ /* a1 = number of VPEs - 1 */
+ ext a1, t0, MVPCONF0_PVPE_SHIFT, 4
+ beqz a1, _vpe1_init_done
+
+ /* a2 = current TC No. */
+ move a2, zero
+
+ /* Enter VPE Configuration State */
+ mfc0 t0, CP0_MVPCONTROL
+ or t0, MVPCONTROL_VPC
+ mtc0 t0, CP0_MVPCONTROL
+ ehb
+
+_next_tc:
+ /* Set the TC number to be used on MTTR and MFTR instructions */
+ mfc0 t0, CP0_VPECONTROL
+ ins t0, a2, 0, 8
+ mtc0 t0, CP0_VPECONTROL
+ ehb
+
+ /* TC0 is already bound */
+ beqz a2, _next_vpe
+
+ /* Halt current TC */
+ li t0, TCHALT_H
+ mttc0 t0, CP0_TCHALT
+ ehb
+
+ /* If there is spare TC, bind it to the last VPE (VPE[a1]) */
+ slt t1, a1, a2
+ bnez t1, _vpe_bind_tc
+ move t1, a1
+
+ /* Set Exclusive TC for active TC */
+ mftc0 t0, CP0_VPECONF0
+ ins t0, a2, VPECONF0_XTC_SHIFT, 8
+ mttc0 t0, CP0_VPECONF0
+
+ move t1, a2
+_vpe_bind_tc:
+ /* Bind TC to a VPE */
+ mftc0 t0, CP0_TCBIND
+ ins t0, t1, TCBIND_CURVPE_SHIFT, 4
+ mttc0 t0, CP0_TCBIND
+
+ /*
+ * Set up CP0_TCSTATUS register:
+ * Disable Coprocessor Usable bits
+ * Disable MDMX/DSP ASE
+ * Clear Dirty TC
+ * not dynamically allocatable
+ * not allocated
+ * Kernel mode
+ * interrupt exempt
+ * ASID 0
+ */
+ li t0, TCSTATUS_IXMT
+ mttc0 t0, CP0_TCSTATUS
+
+_next_vpe:
+ slt t1, a1, a2
+ bnez t1, _done_vpe # No more VPEs
+
+ /* Disable TC multi-threading */
+ mftc0 t0, CP0_VPECONTROL
+ ins t0, zero, VPECONTROL_TE_SHIFT, 1
+ mttc0 t0, CP0_VPECONTROL
+
+ /* Skip following configuration for TC0 */
+ beqz a2, _done_vpe
+
+ /* Deactivate VPE, set Master VPE */
+ mftc0 t0, CP0_VPECONF0
+ ins t0, zero, VPECONF0_VPA_SHIFT, 1
+ or t0, VPECONF0_MVP
+ mttc0 t0, CP0_VPECONF0
+
+ mfc0 t0, CP0_STATUS
+ mttc0 t0, CP0_STATUS
+
+ mttc0 zero, CP0_EPC
+ mttc0 zero, CP0_CAUSE
+
+ mfc0 t0, CP0_CONFIG
+ mttc0 t0, CP0_CONFIG
+
+ /*
+ * VPE1 of each core can execute cached as its L1 I$ has already
+ * been initialized.
+ * and the L2$ has been initialized or "disabled" via CCA override.
+ */
+ PTR_LA t0, _start
+ mttc0 t0, CP0_TCRESTART
+
+ /* Unset Interrupt Exempt, set Activate Thread */
+ mftc0 t0, CP0_TCSTATUS
+ ins t0, zero, TCSTATUS_IXMT_SHIFT, 1
+ ori t0, TCSTATUS_A
+ mttc0 t0, CP0_TCSTATUS
+
+ /* Resume TC */
+ mttc0 zero, CP0_TCHALT
+
+ /* Activate VPE */
+ mftc0 t0, CP0_VPECONF0
+ ori t0, VPECONF0_VPA
+ mttc0 t0, CP0_VPECONF0
+
+_done_vpe:
+ addu a2, 1
+ sltu t0, a0, a2
+ beqz t0, _next_tc
+
+ mfc0 t0, CP0_MVPCONTROL
+ /* Enable all activated VPE to execute */
+ ori t0, MVPCONTROL_EVP
+ /* Exit VPE Configuration State */
+ ins t0, zero, MVPCONTROL_VPC_SHIFT, 1
+ mtc0 t0, CP0_MVPCONTROL
+ ehb
+
+_vpe1_init_done:
+ jr ra
+ END(boot_vpe1)
diff --git a/arch/mips/mach-mtmips/mt7621/spl/serial.c b/arch/mips/mach-mtmips/mt7621/spl/serial.c
new file mode 100644
index 0000000..5cf093a
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/serial.c
@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/io.h>
+#include "../mt7621.h"
+
+void mtmips_spl_serial_init(void)
+{
+#ifdef CONFIG_SPL_SERIAL
+ void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE);
+
+#if CONFIG_CONS_INDEX == 1
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART1_MODE);
+#elif CONFIG_CONS_INDEX == 2
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART2_MODE_M);
+#elif CONFIG_CONS_INDEX == 3
+ clrbits_32(base + SYSCTL_GPIOMODE_REG, UART3_MODE_M);
+#endif /* CONFIG_CONS_INDEX */
+#endif /* CONFIG_SPL_SERIAL */
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/spl.c b/arch/mips/mach-mtmips/mt7621/spl/spl.c
new file mode 100644
index 0000000..91eebc6
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/spl.c
@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <init.h>
+#include <image.h>
+#include <vsprintf.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <asm/sections.h>
+#include <asm/addrspace.h>
+#include <asm/byteorder.h>
+#include <asm/global_data.h>
+#include <linux/sizes.h>
+#include <linux/types.h>
+#include <mach/serial.h>
+#include "../mt7621.h"
+#include "dram.h"
+#include <spl.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+struct tpl_info {
+ u32 magic;
+ u32 size;
+};
+
+void set_timer_freq_simple(void)
+{
+ u32 div = get_xtal_mhz();
+
+ /* Round down cpu freq */
+ gd->arch.timer_freq = rounddown(CONFIG_MT7621_CPU_FREQ, div) * 500000;
+}
+
+void __noreturn board_init_f(ulong dummy)
+{
+ spl_init();
+
+#ifdef CONFIG_SPL_SERIAL
+ /*
+ * mtmips_spl_serial_init() is useful if debug uart is enabled,
+ * or DM based serial is not enabled.
+ */
+ mtmips_spl_serial_init();
+ preloader_console_init();
+#endif
+
+ board_init_r(NULL, 0);
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+#ifdef CONFIG_MT7621_BOOT_FROM_NAND
+ spl_boot_list[0] = BOOT_DEVICE_NAND;
+#else
+ spl_boot_list[0] = BOOT_DEVICE_NOR;
+#endif
+}
+
+unsigned long spl_nor_get_uboot_base(void)
+{
+ const struct tpl_info *tpli;
+ const image_header_t *hdr;
+ u32 addr;
+
+ addr = FLASH_MMAP_BASE + TPL_INFO_OFFSET;
+ tpli = (const struct tpl_info *)KSEG1ADDR(addr);
+
+ if (tpli->magic == TPL_INFO_MAGIC) {
+ addr = FLASH_MMAP_BASE + tpli->size;
+ hdr = (const image_header_t *)KSEG1ADDR(addr);
+
+ if (image_get_magic(hdr) == IH_MAGIC) {
+ addr += sizeof(*hdr) + image_get_size(hdr);
+ return KSEG1ADDR(addr);
+ }
+ }
+
+ panic("Unable to locate SPL payload\n");
+ return 0;
+}
+
+uint32_t spl_nand_get_uboot_raw_page(void)
+{
+ const struct stage_header *sh = (const struct stage_header *)&_start;
+ u32 addr;
+
+ addr = image_get_header_size() + be32_to_cpu(sh->stage_size);
+ addr = ALIGN(addr, SZ_4K);
+
+ return addr;
+}
diff --git a/arch/mips/mach-mtmips/mt7621/spl/start.S b/arch/mips/mach-mtmips/mt7621/spl/start.S
new file mode 100644
index 0000000..3cad356
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/spl/start.S
@@ -0,0 +1,226 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+#include <asm/cacheops.h>
+#include <asm/addrspace.h>
+#include <asm/mipsmtregs.h>
+#include <asm/cm.h>
+#include "../mt7621.h"
+#include "dram.h"
+
+#ifndef CONFIG_SYS_INIT_SP_ADDR
+#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
+ CONFIG_SYS_INIT_SP_OFFSET)
+#endif
+
+#define SP_ADDR_TEMP 0xbe10dff0
+
+ .macro init_wr sel
+ MTC0 zero, CP0_WATCHLO,\sel
+ mtc0 t1, CP0_WATCHHI,\sel
+ .endm
+
+ .macro setup_stack_gd
+ li t0, -16
+ PTR_LI t1, CONFIG_SYS_INIT_SP_ADDR
+ and sp, t1, t0 # force 16 byte alignment
+ PTR_SUBU \
+ sp, sp, GD_SIZE # reserve space for gd
+ and sp, sp, t0 # force 16 byte alignment
+ move k0, sp # save gd pointer
+#if CONFIG_VAL(SYS_MALLOC_F_LEN) && \
+ !CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F)
+ li t2, CONFIG_VAL(SYS_MALLOC_F_LEN)
+ PTR_SUBU \
+ sp, sp, t2 # reserve space for early malloc
+ and sp, sp, t0 # force 16 byte alignment
+#endif
+ move fp, sp
+
+ /* Clear gd */
+ move t0, k0
+1:
+ PTR_S zero, 0(t0)
+ PTR_ADDIU t0, PTRSIZE
+ blt t0, t1, 1b
+ nop
+
+#if CONFIG_VAL(SYS_MALLOC_F_LEN) && \
+ !CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F)
+ PTR_S sp, GD_MALLOC_BASE(k0) # gd->malloc_base offset
+#endif
+ .endm
+
+ .set noreorder
+
+ENTRY(_start)
+ b 1f
+ mtc0 zero, CP0_COUNT
+
+ /* Stage header required by BootROM */
+ .org 0x8
+ .word 0 # ep, filled by mkimage
+ .word 0 # stage_size, filled by mkimage
+ .word 0 # has_stage2
+ .word 0 # next_ep
+ .word 0 # next_size
+ .word 0 # next_offset
+
+1:
+ /* Init CP0 Status */
+ mfc0 t0, CP0_STATUS
+ and t0, ST0_IMPL
+ or t0, ST0_BEV | ST0_ERL
+ mtc0 t0, CP0_STATUS
+ ehb
+
+ /* Clear Watch Status bits and disable watch exceptions */
+ li t1, 0x7 # Clear I, R and W conditions
+ init_wr 0
+ init_wr 1
+ init_wr 2
+ init_wr 3
+
+ /* Clear WP, IV and SW interrupts */
+ mtc0 zero, CP0_CAUSE
+
+ /* Clear timer interrupt (CP0_COUNT cleared on branch to 'reset') */
+ mtc0 zero, CP0_COMPARE
+
+ /* VPE1 goes to wait code directly */
+ mfc0 t0, CP0_TCBIND
+ andi t0, TCBIND_CURVPE
+ bnez t0, launch_vpe_entry
+ nop
+
+ /* Core1 goes to specific launch entry */
+ PTR_LI t0, KSEG1ADDR(CONFIG_MIPS_CM_BASE)
+ lw t1, GCR_Cx_ID(t0)
+ bnez t1, launch_core_entry
+ nop
+
+ /* MT7530 reset */
+ li t0, KSEG1ADDR(SYSCTL_BASE)
+ lw t1, SYSCTL_RSTCTL_REG(t0)
+ ori t1, MCM_RST
+ sw t1, SYSCTL_RSTCTL_REG(t0)
+
+ /* Disable DMA route for PSE SRAM set by BootROM */
+ PTR_LI t0, KSEG1ADDR(DMA_CFG_ARB_BASE)
+ sw zero, DMA_ROUTE_REG(t0)
+
+ /* Set CPU clock to 500MHz (Required if boot from NAND) */
+ li t0, KSEG1ADDR(SYSCTL_BASE)
+ lw t1, SYSCTL_CLKCFG0_REG(t0)
+ ins t1, zero, 30, 2 # CPU_CLK_SEL
+ sw t1, SYSCTL_CLKCFG0_REG(t0)
+
+ /* Set CPU clock divider to 1/1 */
+ li t0, KSEG1ADDR(RBUS_BASE)
+ li t1, 0x101
+ sw t1, RBUS_DYN_CFG0_REG(t0)
+
+ /* (Re-)initialize the SRAM */
+ bal mips_sram_init
+ nop
+
+ /* Set up temporary stack */
+ li sp, SP_ADDR_TEMP
+
+ /* Setup full CPS */
+ bal mips_cm_map
+ nop
+
+ bal mt7621_cps_init
+ nop
+
+ /* Prepare for CPU/DDR initialization binary blob */
+ bal prepare_stage_bin
+ nop
+
+ /* Call CPU/DDR initialization binary blob */
+ li t9, STAGE_LOAD_ADDR
+ jalr t9
+ nop
+
+ /* Switch CPU PLL source */
+ li t0, KSEG1ADDR(SYSCTL_BASE)
+ lw t1, SYSCTL_CLKCFG0_REG(t0)
+ li t2, 1
+ ins t1, t2, CPU_CLK_SEL_S, 2
+ sw t1, SYSCTL_CLKCFG0_REG(t0)
+
+ /*
+ * Currently SPL is running on locked L2 cache (on KSEG0).
+ * To reset the entire cache, we have to writeback SPL to DRAM first.
+ * Cache flush won't work here. Use memcpy instead.
+ */
+
+ la a0, __text_start
+ move a1, a0
+ la a2, __image_copy_end
+ sub a2, a2, a1
+ li a3, 5
+ ins a0, a3, 29, 3 # convert to KSEG1
+
+ bal memcpy
+ nop
+
+ /* Disable caches */
+ bal mips_cache_disable
+ nop
+
+ /* Reset caches */
+ bal mips_cache_reset
+ nop
+
+ /* Disable SRAM */
+ li t0, KSEG1ADDR(FE_BASE)
+ li t1, FE_PSE_RESET
+ sw t1, FE_RST_GLO_REG(t0)
+
+ /* Clear the .bss section */
+ la a0, __bss_start
+ la a1, __bss_end
+1: sw zero, 0(a0)
+ addiu a0, 4
+ ble a0, a1, 1b
+ nop
+
+ /* Set up initial stack and global data */
+ setup_stack_gd
+
+#if CONFIG_IS_ENABLED(INIT_STACK_WITHOUT_MALLOC_F)
+ /* Set malloc base */
+ li t0, (CONFIG_SYS_INIT_SP_ADDR + 15) & (~15)
+ PTR_S t0, GD_MALLOC_BASE(k0) # gd->malloc_base offset
+#endif
+
+#if defined(CONFIG_DEBUG_UART) && defined(CONFIG_SPL_SERIAL)
+ /* Earliest point to set up debug uart */
+ bal debug_uart_init
+ nop
+#endif
+
+ /* Setup timer */
+ bal set_timer_freq_simple
+ nop
+
+ /* Bootup secondary CPUs */
+ bal secondary_cpu_init
+ nop
+
+ move a0, zero # a0 <-- boot_flags = 0
+ bal board_init_f
+ move ra, zero
+
+ END(_start)
diff --git a/arch/mips/mach-mtmips/mt7621/sram_init.S b/arch/mips/mach-mtmips/mt7621/sram_init.S
new file mode 100644
index 0000000..03b9eab
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/sram_init.S
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm/addrspace.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include "mt7621.h"
+
+LEAF(mips_sram_init)
+ li t0, KSEG1ADDR(FE_BASE)
+ li t1, FE_PSE_RESET
+ sw t1, FE_RST_GLO_REG(t0)
+
+ li t1, (FE_PSE_RAM | FE_PSE_MEM_EN)
+ sw t1, FE_RST_GLO_REG(t0)
+
+ jr ra
+ END(mips_sram_init)
diff --git a/arch/mips/mach-mtmips/mt7621/tpl/Makefile b/arch/mips/mach-mtmips/mt7621/tpl/Makefile
new file mode 100644
index 0000000..471ad74
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/tpl/Makefile
@@ -0,0 +1,4 @@
+
+extra-y += start.o
+
+obj-y += tpl.o
diff --git a/arch/mips/mach-mtmips/mt7621/tpl/start.S b/arch/mips/mach-mtmips/mt7621/tpl/start.S
new file mode 100644
index 0000000..19b09f7
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/tpl/start.S
@@ -0,0 +1,161 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/asm.h>
+#include <asm/regdef.h>
+#include <asm/addrspace.h>
+#include <asm/mipsregs.h>
+#include <asm/cm.h>
+#include "../mt7621.h"
+
+#define SP_ADDR_TEMP 0xbe10dff0
+
+ .set noreorder
+
+ .macro init_wr sel
+ MTC0 zero, CP0_WATCHLO,\sel
+ mtc0 t1, CP0_WATCHHI,\sel
+ .endm
+
+ .macro uhi_mips_exception
+ move k0, t9 # preserve t9 in k0
+ move k1, a0 # preserve a0 in k1
+ li t9, 15 # UHI exception operation
+ li a0, 0 # Use hard register context
+ sdbbp 1 # Invoke UHI operation
+ .endm
+
+ENTRY(_start)
+ b reset
+ mtc0 zero, CP0_COUNT
+
+ /*
+ * Store TPL size here.
+ * This will be used by SPL to locate u-boot payload.
+ */
+ .org TPL_INFO_OFFSET
+ .word TPL_INFO_MAGIC
+ .word __image_copy_len
+
+ /* Exception vector */
+ .org 0x200
+ /* TLB refill, 32 bit task */
+ uhi_mips_exception
+
+ .org 0x280
+ /* XTLB refill, 64 bit task */
+ uhi_mips_exception
+
+ .org 0x300
+ /* Cache error exception */
+ uhi_mips_exception
+
+ .org 0x380
+ /* General exception */
+ uhi_mips_exception
+
+ .org 0x400
+ /* Catch interrupt exceptions */
+ uhi_mips_exception
+
+ .org 0x480
+ /* EJTAG debug exception */
+1: b 1b
+ nop
+
+ .org 0x500
+
+reset:
+ /* Set KSEG0 to Uncached */
+ mfc0 t0, CP0_CONFIG
+ ins t0, zero, 0, 3
+ ori t0, t0, CONF_CM_UNCACHED
+ mtc0 t0, CP0_CONFIG
+ ehb
+
+ /* Check for CPU number */
+ mfc0 t0, CP0_EBASE
+ and t0, t0, MIPS_EBASE_CPUNUM
+ beqz t0, 1f
+ nop
+
+ /* Secondary core goes to specified SPL entry address */
+ li t0, KSEG1ADDR(SYSCTL_BASE)
+ lw t0, BOOT_SRAM_BASE_REG(t0)
+ jr t0
+ nop
+
+ /* Init CP0 Status */
+1: mfc0 t0, CP0_STATUS
+ and t0, ST0_IMPL
+ or t0, ST0_BEV | ST0_ERL
+ mtc0 t0, CP0_STATUS
+ nop
+
+ /* Clear Watch Status bits and disable watch exceptions */
+ li t1, 0x7 # Clear I, R and W conditions
+ init_wr 0
+ init_wr 1
+ init_wr 2
+ init_wr 3
+
+ /* Clear WP, IV and SW interrupts */
+ mtc0 zero, CP0_CAUSE
+
+ /* Clear timer interrupt (CP0_COUNT cleared on branch to 'reset') */
+ mtc0 zero, CP0_COMPARE
+
+ /* Setup basic CPS */
+ bal mips_cm_map
+ nop
+
+ li t0, KSEG1ADDR(CONFIG_MIPS_CM_BASE)
+ li t1, GCR_REG0_BASE_VALUE
+ sw t1, GCR_REG0_BASE(t0)
+
+ li t1, ((GCR_REG0_MASK_VALUE << GCR_REGn_MASK_ADDRMASK_SHIFT) | \
+ GCR_REGn_MASK_CMTGT_IOCU0)
+ sw t1, GCR_REG0_MASK(t0)
+
+ lw t1, GCR_BASE(t0)
+ ins t1, zero, 0, 2 # CM_DEFAULT_TARGET
+ sw t1, GCR_BASE(t0)
+
+ lw t1, GCR_CONTROL(t0)
+ li t2, GCR_CONTROL_SYNCCTL
+ or t1, t1, t2
+ sw t1, GCR_CONTROL(t0)
+
+ /* Increase SPI frequency */
+ li t0, KSEG1ADDR(SPI_BASE)
+ li t1, 5
+ sw t1, SPI_SPACE_REG(t0)
+
+ /* Set CPU clock to 500MHz */
+ li t0, KSEG1ADDR(SYSCTL_BASE)
+ lw t1, SYSCTL_CLKCFG0_REG(t0)
+ ins t1, zero, 30, 2 # CPU_CLK_SEL
+ sw t1, SYSCTL_CLKCFG0_REG(t0)
+
+ /* Set CPU clock divider to 1/1 */
+ li t0, KSEG1ADDR(RBUS_BASE)
+ li t1, 0x101
+ sw t1, RBUS_DYN_CFG0_REG(t0)
+
+ /* Initialize the SRAM */
+ bal mips_sram_init
+ nop
+
+ /* Set up initial stack */
+ li sp, SP_ADDR_TEMP
+
+ bal tpl_main
+ nop
+
+ END(_start)
diff --git a/arch/mips/mach-mtmips/mt7621/tpl/tpl.c b/arch/mips/mach-mtmips/mt7621/tpl/tpl.c
new file mode 100644
index 0000000..2a82890
--- /dev/null
+++ b/arch/mips/mach-mtmips/mt7621/tpl/tpl.c
@@ -0,0 +1,144 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2022 MediaTek Inc. All rights reserved.
+ *
+ * Author: Weijie Gao <weijie.gao@mediatek.com>
+ */
+
+#include <image.h>
+#include <asm/system.h>
+#include <asm/sections.h>
+#include <asm/cacheops.h>
+#include <asm/mipsregs.h>
+#include <asm/cm.h>
+
+#define INDEX_STORE_DATA_SD 0x0f
+
+typedef void __noreturn (*image_entry_noargs_t)(void);
+
+/*
+ * Lock L2 cache and fill data
+ * Assume that data is 4-byte aligned and start_addr/size is 32-byte aligned
+ */
+static void fill_lock_l2cache(uintptr_t dataptr, ulong start_addr, ulong size)
+{
+ ulong slsize = CONFIG_SYS_DCACHE_LINE_SIZE;
+ ulong end_addr = start_addr + size;
+ const u32 *data = (u32 *)dataptr;
+ ulong i, addr;
+ u32 val;
+
+ /* Clear WSC & SPR bit in ErrCtl */
+ val = read_c0_ecc();
+ val &= 0xcfffffff;
+ write_c0_ecc(val);
+ execution_hazard_barrier();
+
+ for (addr = start_addr; addr < end_addr; addr += slsize) {
+ /* Set STagLo to lock cache line */
+ write_c0_staglo((addr & 0x1ffff800) | 0xa0);
+ mips_cache(INDEX_STORE_TAG_SD, (void *)addr);
+
+ /* Fill data */
+ for (i = 0; i < slsize; i += 8) {
+ val = *data++;
+ __write_32bit_c0_register($28, 5, val); /* sdtaglo */
+ val = *data++;
+ __write_32bit_c0_register($29, 5, val); /* sdtaghi */
+ mips_cache(INDEX_STORE_DATA_SD, (void *)(addr + i));
+ }
+ }
+
+ sync();
+}
+
+/* A simple function to initialize MT7621's cache */
+static void mt7621_cache_init(void)
+{
+ void __iomem *cm_base = (void *)KSEG1ADDR(CONFIG_MIPS_CM_BASE);
+ ulong lsize = CONFIG_SYS_DCACHE_LINE_SIZE;
+ ulong addr;
+ u32 val;
+
+ /* Enable CCA override. Set to uncached */
+ val = readl(cm_base + GCR_BASE);
+ val &= ~CCA_DEFAULT_OVR_MASK;
+ val |= CCA_DEFAULT_OVREN | (2 << CCA_DEFAULT_OVR_SHIFT);
+ writel(val, cm_base + GCR_BASE);
+
+ /* Initialize L1 I-Cache */
+ write_c0_taglo(0);
+ write_c0_taghi(0);
+
+ for (addr = 0; addr < CONFIG_SYS_ICACHE_SIZE; addr += lsize)
+ mips_cache(INDEX_STORE_TAG_I, (void *)addr);
+
+ /* Initialize L1 D-Cache */
+ write_c0_dtaglo(0);
+ __write_32bit_c0_register($29, 2, 0); /* dtaghi */
+
+ for (addr = 0; addr < CONFIG_SYS_DCACHE_SIZE; addr += lsize)
+ mips_cache(INDEX_STORE_TAG_D, (void *)addr);
+
+ /* Initialize L2 Cache */
+ write_c0_staglo(0);
+ __write_32bit_c0_register($29, 4, 0); /* staghi */
+
+ for (addr = 0; addr < (256 << 10); addr += lsize)
+ mips_cache(INDEX_STORE_TAG_SD, (void *)addr);
+
+ /* Dsiable CCA override */
+ val = readl(cm_base + GCR_BASE);
+ val &= ~(CCA_DEFAULT_OVR_MASK | CCA_DEFAULT_OVREN);
+ writel(val, cm_base + GCR_BASE);
+
+ /* Set KSEG0 to non-coherent cached (important!) */
+ val = read_c0_config();
+ val &= ~CONF_CM_CMASK;
+ val |= CONF_CM_CACHABLE_NONCOHERENT;
+ write_c0_config(val);
+ execution_hazard_barrier();
+
+ /* Again, invalidate L1 D-Cache */
+ for (addr = 0; addr < CONFIG_SYS_DCACHE_SIZE; addr += lsize)
+ mips_cache(INDEX_WRITEBACK_INV_D, (void *)addr);
+
+ /* Invalidate L1 I-Cache */
+ for (addr = 0; addr < CONFIG_SYS_ICACHE_SIZE; addr += lsize)
+ mips_cache(INDEX_INVALIDATE_I, (void *)addr);
+
+ /* Disable L2 cache bypass */
+ val = read_c0_config2();
+ val &= ~MIPS_CONF_IMPL;
+ write_c0_config2(val);
+ execution_hazard_barrier();
+}
+
+void __noreturn tpl_main(void)
+{
+ const image_header_t *hdr = (const image_header_t *)__image_copy_end;
+ image_entry_noargs_t image_entry;
+ u32 loadaddr, size;
+ uintptr_t data;
+
+ /* Initialize the cache first */
+ mt7621_cache_init();
+
+ if (image_get_magic(hdr) != IH_MAGIC)
+ goto failed;
+
+ loadaddr = image_get_load(hdr);
+ size = image_get_size(hdr);
+ image_entry = (image_entry_noargs_t)image_get_ep(hdr);
+
+ /* Load TPL image to L2 cache */
+ data = (uintptr_t)__image_copy_end + sizeof(struct image_header);
+ fill_lock_l2cache(data, loadaddr, size);
+
+ /* Jump to SPL */
+ image_entry();
+
+failed:
+ for (;;)
+ ;
+}