Re: [PATCH v5 05/25] mips: mtmips: add support for MediaTek MT7621 SoC

On 16.05.22 04:42, Weijie Gao wrote:

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

Signed-off-by: Weijie Gao weijie.gao@mediatek.com

v5 changes: Fix dram binary blob loading procedure Adjust mt7621.dtsi, clkctrl moved under sysc, pinctrl default states removed v4 changes: Add full support for booting from flash (SPL/TPL support) Boot all cores/VPEs Use binman to generate final binary Use binman to embed external binary blob v3 changes: Update clock name for mt7621.dtsi due to clk driver changed v2 changes: Add a kconfig for max supported ram size Remove network configs from default config file

---

arch/mips/dts/mt7621-u-boot.dtsi | 111 ++++++ arch/mips/dts/mt7621.dtsi | 349 ++++++++++++++++++ arch/mips/mach-mtmips/Kconfig | 49 ++- arch/mips/mach-mtmips/Makefile | 4 + arch/mips/mach-mtmips/cpu.c | 2 +- arch/mips/mach-mtmips/mt7621/Kconfig | 95 +++++ arch/mips/mach-mtmips/mt7621/Makefile | 14 + arch/mips/mach-mtmips/mt7621/init.c | 229 ++++++++++++ arch/mips/mach-mtmips/mt7621/mt7621.h | 229 ++++++++++++ arch/mips/mach-mtmips/mt7621/serial.c | 23 ++ arch/mips/mach-mtmips/mt7621/spl/Makefile | 9 + arch/mips/mach-mtmips/mt7621/spl/cps.c | 152 ++++++++ arch/mips/mach-mtmips/mt7621/spl/dram.c | 155 ++++++++ arch/mips/mach-mtmips/mt7621/spl/dram.h | 39 ++ arch/mips/mach-mtmips/mt7621/spl/launch.c | 100 ++++++ arch/mips/mach-mtmips/mt7621/spl/launch.h | 52 +++ arch/mips/mach-mtmips/mt7621/spl/launch_ll.S | 357 +++++++++++++++++++ arch/mips/mach-mtmips/mt7621/spl/serial.c | 24 ++ arch/mips/mach-mtmips/mt7621/spl/spl.c | 95 +++++ arch/mips/mach-mtmips/mt7621/spl/start.S | 226 ++++++++++++ arch/mips/mach-mtmips/mt7621/sram_init.S | 22 ++ arch/mips/mach-mtmips/mt7621/tpl/Makefile | 4 + arch/mips/mach-mtmips/mt7621/tpl/start.S | 161 +++++++++ arch/mips/mach-mtmips/mt7621/tpl/tpl.c | 146 ++++++++ include/configs/mt7621.h | 67 ++++ 25 files changed, 2708 insertions(+), 6 deletions(-) create mode 100644 arch/mips/dts/mt7621-u-boot.dtsi create mode 100644 arch/mips/dts/mt7621.dtsi create mode 100644 arch/mips/mach-mtmips/mt7621/Kconfig create mode 100644 arch/mips/mach-mtmips/mt7621/Makefile create mode 100644 arch/mips/mach-mtmips/mt7621/init.c create mode 100644 arch/mips/mach-mtmips/mt7621/mt7621.h create mode 100644 arch/mips/mach-mtmips/mt7621/serial.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/Makefile create mode 100644 arch/mips/mach-mtmips/mt7621/spl/cps.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/dram.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/dram.h create mode 100644 arch/mips/mach-mtmips/mt7621/spl/launch.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/launch.h create mode 100644 arch/mips/mach-mtmips/mt7621/spl/launch_ll.S create mode 100644 arch/mips/mach-mtmips/mt7621/spl/serial.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/spl.c create mode 100644 arch/mips/mach-mtmips/mt7621/spl/start.S create mode 100644 arch/mips/mach-mtmips/mt7621/sram_init.S create mode 100644 arch/mips/mach-mtmips/mt7621/tpl/Makefile create mode 100644 arch/mips/mach-mtmips/mt7621/tpl/start.S create mode 100644 arch/mips/mach-mtmips/mt7621/tpl/tpl.c create mode 100644 include/configs/mt7621.h

Reviewed-by: Daniel Schwierzeck daniel.schwierzeck@gmail.com

some nits below

diff --git a/arch/mips/dts/mt7621-u-boot.dtsi b/arch/mips/dts/mt7621-u-boot.dtsi new file mode 100644 index 0000000000..c5a8aa357f --- /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 0000000000..0f057dfe1b --- /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@0 {

shouldn't a @XXX be always paired with a "reg = <XXX>" respectively shouldn't it be omitted without a "reg"?

• compatible = "fixed-clock";
  

• clock-frequency = <48000000>;
  

• #clock-cells = <0>;
  

• };
• clk50m: clk50m@0 {

• 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 = <&eth_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 151b004603..d46be503a2 100644 --- a/arch/mips/mach-mtmips/Kconfig +++ b/arch/mips/mach-mtmips/Kconfig @@ -9,6 +9,7 @@ config SYS_MALLOC_F_LEN

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 @@ config SYS_DCACHE_LINE_SIZE 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 @@ config SOC_MT7620 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 @@ config SOC_MT7628 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 4909b47ef2..19f1e07033 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 a4b5cff61d..f1e9022738 100644 --- a/arch/mips/mach-mtmips/cpu.c +++ b/arch/mips/mach-mtmips/cpu.c @@ -16,7 +16,7 @@ DECLARE_GLOBAL_DATA_PTR;

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 0000000000..37d512c68f --- /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

can you really select any frequency in that range like 123 MHz? Doesn't need it be in sync with the DRAM frequency?

+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 0000000000..bf1b0bb688 --- /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 0000000000..ec63712bc1 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/init.c @@ -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
• */

+#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 "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 = (val & VER_ID_M) >> VER_ID_S;
• eco = (val & ECO_ID_M) >> ECO_ID_S;
• pkg = !!(val & PKG_ID);
• core = !!(val & CPU_ID);
• val = readl(sysc + SYSCTL_SYSCFG0_REG);
• dram = val & DRAM_TYPE;
• chipmode = (val & CHIP_MODE_M) >> CHIP_MODE_S;
• 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 = (void *)KSEG1ADDR(SYSCTL_BASE);
• u32 bs, xtal_sel;
• bs = readl(sysc + SYSCTL_SYSCFG0_REG);
• xtal_sel = (bs & XTAL_MODE_SEL_M) >> XTAL_MODE_SEL_S;
• 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((0x20 << SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_S) |

•       (0x20 << SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_S) |
  

•       (2 << SSUSB_MAC3_SYS_CK_GATE_MODE_S) |
  

•       (2 << SSUSB_MAC2_SYS_CK_GATE_MODE_S) | 0x10,
  

•       usbh + SSUSB_MAC_CK_CTRL_REG);
  

• writel((2 << SSUSB_PLL_PREDIV_PE1D_S) | (1 << SSUSB_PLL_PREDIV_U3_S) |

•       (4 << SSUSB_PLL_FBKDI_S), usbh + DA_SSUSB_U3PHYA_10_REG);
  

• writel((0x18 << SSUSB_PLL_FBKDIV_PE2H_S) |

•       (0x18 << SSUSB_PLL_FBKDIV_PE1D_S) |
  

•       (0x18 << SSUSB_PLL_FBKDIV_PE1H_S) |
  

•       (0x1e << SSUSB_PLL_FBKDIV_U3_S),
  

•       usbh + DA_SSUSB_PLL_FBKDIV_REG);
  

• writel((0x1e400000 << SSUSB_PLL_PCW_NCPO_U3_S),

•       usbh + DA_SSUSB_PLL_PCW_NCPO_REG);
  

• writel((0x25 << SSUSB_PLL_SSC_DELTA1_PE1H_S) |

•       (0x73 << SSUSB_PLL_SSC_DELTA1_U3_S),
  

•       usbh + DA_SSUSB_PLL_SSC_DELTA1_REG);
  

• writel((0x71 << SSUSB_PLL_SSC_DELTA_U3_S) |

•       (0x4a << SSUSB_PLL_SSC_DELTA1_PE2D_S),
  

•       usbh + DA_SSUSB_U3PHYA_21_REG);
  

• writel((0x140 << SSUSB_PLL_SSC_PRD_S), usbh + SSUSB_U3PHYA_9_REG);
• writel((0x11c00000 << SSUSB_SYSPLL_PCW_NCPO_S),

•       usbh + SSUSB_U3PHYA_3_REG);
  

• writel((4 << SSUSB_PCIE_CLKDRV_AMP_S) | (1 << SSUSB_SYSPLL_FBSEL_S) |

•       (1 << SSUSB_SYSPLL_PREDIV_S), usbh + SSUSB_U3PHYA_1_REG);
  

• writel((0x12 << SSUSB_SYSPLL_FBDIV_S) | 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 | (8 << SSUSB_RX_DAC_MUX_S) |

•       (1 << SSUSB_PCIE_SIGDET_VTH_S) | (1 << SSUSB_PCIE_SIGDET_LPF_S),
  

•       usbh + SSUSB_U3PHYA_11_REG);
  

• writel((0x1ff << SSUSB_RING_OSC_CNTEND_S) |

•       (0x7f << SSUSB_XTAL_OSC_CNTEND_S) | SSUSB_RING_BYPASS_DET,
  

•       usbh + SSUSB_B2_ROSC_0_REG);
  

• writel((3 << SSUSB_RING_OSC_FRC_RECAL_S) | SSUSB_RING_OSC_FRC_SEL,

•       usbh + SSUSB_B2_ROSC_1_REG);
  

+}

+static void xhci_config_25mhz(void __iomem *usbh) +{

• writel((0x20 << SSUSB_MAC3_SYS_CK_GATE_MASK_TIME_S) |

•       (0x20 << SSUSB_MAC2_SYS_CK_GATE_MASK_TIME_S) |
  

•       (2 << SSUSB_MAC3_SYS_CK_GATE_MODE_S) |
  

•       (2 << SSUSB_MAC2_SYS_CK_GATE_MODE_S) | 0x10,
  

•       usbh + SSUSB_MAC_CK_CTRL_REG);
  

• writel((2 << SSUSB_PLL_PREDIV_PE1D_S) | (4 << SSUSB_PLL_FBKDI_S),

•       usbh + DA_SSUSB_U3PHYA_10_REG);
  

• writel((0x18 << SSUSB_PLL_FBKDIV_PE2H_S) |

•       (0x18 << SSUSB_PLL_FBKDIV_PE1D_S) |
  

•       (0x18 << SSUSB_PLL_FBKDIV_PE1H_S) |
  

•       (0x19 << SSUSB_PLL_FBKDIV_U3_S),
  

•       usbh + DA_SSUSB_PLL_FBKDIV_REG);
  

• writel((0x18000000 << SSUSB_PLL_PCW_NCPO_U3_S),

•       usbh + DA_SSUSB_PLL_PCW_NCPO_REG);
  

• writel((0x25 << SSUSB_PLL_SSC_DELTA1_PE1H_S) |

•       (0x4a << SSUSB_PLL_SSC_DELTA1_U3_S),
  

•       usbh + DA_SSUSB_PLL_SSC_DELTA1_REG);
  

• writel((0x48 << SSUSB_PLL_SSC_DELTA_U3_S) |

•       (0x4a << SSUSB_PLL_SSC_DELTA1_PE2D_S),
  

•       usbh + DA_SSUSB_U3PHYA_21_REG);
  

• writel((0x190 << SSUSB_PLL_SSC_PRD_S), usbh + SSUSB_U3PHYA_9_REG);
• writel((0xe000000 << SSUSB_SYSPLL_PCW_NCPO_S),

•       usbh + SSUSB_U3PHYA_3_REG);
  

• writel((4 << SSUSB_PCIE_CLKDRV_AMP_S) | (1 << SSUSB_SYSPLL_FBSEL_S),

•       usbh + SSUSB_U3PHYA_1_REG);
  

• writel((0xf << SSUSB_SYSPLL_FBDIV_S) | 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 | (8 << SSUSB_RX_DAC_MUX_S) |

•       (1 << SSUSB_PCIE_SIGDET_VTH_S) | (1 << SSUSB_PCIE_SIGDET_LPF_S),
  

•       usbh + SSUSB_U3PHYA_11_REG);
  

• writel((0x1ff << SSUSB_RING_OSC_CNTEND_S) |

•       (0x7f << SSUSB_XTAL_OSC_CNTEND_S) | SSUSB_RING_BYPASS_DET,
  

•       usbh + SSUSB_B2_ROSC_0_REG);
  

• writel((3 << SSUSB_RING_OSC_FRC_RECAL_S) | 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 0000000000..916cc993b4 --- /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 0000000000..0ccc71dc75 --- /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 0000000000..ebe54e79b9 --- /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 0000000000..61f319f45f --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/spl/cps.c @@ -0,0 +1,152 @@ +// 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 "../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 num_cores;
• num_cores = ((readl(cm_base + GCR_CONFIG) & GCR_CONFIG_PCORES) >>

•     GCR_CONFIG_PCORES_SHIFT) + 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,
  

•       (GCR_REG0_MASK_VALUE << GCR_REGn_MASK_ADDRMASK_SHIFT) |
  

•       GCR_REGn_MASK_CMTGT_IOCU0);
  

• clrsetbits_32(cm_base + GCR_REG1_MASK,

•       GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
  

•       (GCR_REG1_MASK_VALUE << GCR_REGn_MASK_ADDRMASK_SHIFT) |
  

•       GCR_REGn_MASK_CMTGT_IOCU0);
  

• clrsetbits_32(cm_base + GCR_REG2_MASK,

•       GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
  

•       (GCR_REG2_MASK_VALUE << GCR_REGn_MASK_ADDRMASK_SHIFT) |
  

•       GCR_REGn_MASK_CMTGT_IOCU0);
  

• clrsetbits_32(cm_base + GCR_REG3_MASK,

•       GCR_REGn_MASK_ADDRMASK | GCR_REGn_MASK_CMTGT,
  

•       (GCR_REG3_MASK_VALUE << GCR_REGn_MASK_ADDRMASK_SHIFT) |
  

•       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 0000000000..827c4a71e9 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/spl/dram.c @@ -0,0 +1,155 @@ +// 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/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) {

• /* Possible wrong binary blob. Hang here */
  

• for (;;)
  

• 	;
  

perhaps a panic() with an according error message should be used?

• }
• 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 0000000000..7322c58276 --- /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 0000000000..37c20a5f56 --- /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 0000000000..f34250d605 --- /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 0000000000..55a8fff9af --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/spl/launch_ll.S @@ -0,0 +1,357 @@ +/* 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

• nop
  

• addiu t2, 1
• bne t2, a0, _next_coherent_core

• nop
  

• jr ra

• nop
  

the nop's are actually redundant in normal reorder assembly mode and could be omitted. The assembler will add them automatically if there are no other instructions feasible for the delay slot

• 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

• nop
  

• 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

• nop
  

• /* Check the launch flag */
• lw t3, LAUNCH_FLAGS(t0)
• and t3, LAUNCH_FGO
• beqz t3, start_poll

• nop
  

• /* 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

• nop
  

• .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

• nop
  

• /* 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

• nop
  

• /* Bootup Core0/VPE1 */
• bal boot_vpe1

• nop
  

• b launch_vpe_entry

• nop
  

• 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

• nop
  

• /* a1 = number of VPEs - 1 */
• ext a1, t0, MVPCONF0_PVPE_SHIFT, 4
• beqz a1, _vpe1_init_done

• nop
  

• /* 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

• nop
  

• /* 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

• nop
  

• /* 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

• nop
  

• /* 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

• nop
  

• 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

• nop
  

• 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 0000000000..5cf093a078 --- /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 0000000000..71d01aa7f5 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/spl/spl.c @@ -0,0 +1,95 @@ +// SPDX-License-Identifier: GPL-2.0 +/*

• • Copyright (C) 2022 MediaTek Inc. All rights reserved.
• • Author: Weijie Gao weijie.gao@mediatek.com
• */

+#include <spl.h> +#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 <mach/serial.h> +#include "../mt7621.h" +#include "dram.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 0000000000..3cad3567e7 --- /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 0000000000..74ddd6bcd7 --- /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 0000000000..471ad74249 --- /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 0000000000..19b09f7251 --- /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 0000000000..77bcf0ddf0 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7621/tpl/tpl.c @@ -0,0 +1,146 @@ +// 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/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);

+static inline void ehb(void) +{

• __asm__ __volatile__ ("ehb");

+}

this is already available as execution_hazard_barrier() in arch/mips/include/asm/system.h. There is also sync() and instruction_hazard_barrier() if needed.

+/*

• • 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);
• ehb();
• 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));
  

• }
  

• }

+}

+/* 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);
• ehb();
• /* 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);
• ehb();

+}

+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 (;;)

• ;
  

+} diff --git a/include/configs/mt7621.h b/include/configs/mt7621.h new file mode 100644 index 0000000000..580d5fde0c --- /dev/null +++ b/include/configs/mt7621.h @@ -0,0 +1,67 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/*

• • Copyright (C) 2022 MediaTek Inc. All rights reserved.
• • Author: Weijie Gao weijie.gao@mediatek.com
• */

+#ifndef __CONFIG_MT7621_H +#define __CONFIG_MT7621_H

+#define CONFIG_SYS_HZ 1000 +#define CONFIG_SYS_MIPS_TIMER_FREQ 440000000

+#define CONFIG_SYS_BOOTPARAMS_LEN 0x20000

+#define CONFIG_SYS_SDRAM_BASE 0x80000000

+#define CONFIG_VERY_BIG_RAM +#define CONFIG_MAX_MEM_MAPPED 0x1c000000

+#define CONFIG_SYS_INIT_SP_OFFSET 0x800000

+#define CONFIG_SYS_BOOTM_LEN 0x2000000

+#define CONFIG_SYS_MAXARGS 16 +#define CONFIG_SYS_CBSIZE 1024

+#define CONFIG_SYS_NONCACHED_MEMORY 0x100000

+/* MMC */ +#define MMC_SUPPORTS_TUNING

+/* NAND */ +#define CONFIG_SYS_MAX_NAND_DEVICE 1

+/* Serial SPL */ +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_SERIAL) +#define CONFIG_SYS_NS16550_MEM32 +#define CONFIG_SYS_NS16550_CLK 50000000 +#define CONFIG_SYS_NS16550_REG_SIZE -4 +#define CONFIG_SYS_NS16550_COM1 0xbe000c00 +#endif

+/* Serial common */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200, \

• 			  230400, 460800, 921600 }
  

+/* SPL */ +#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE

+#ifdef CONFIG_TPL_BUILD +#define CONFIG_SPL_START_S_PATH "arch/mips/mach-mtmips/mt7621/tpl" +/* .bss will not be used by TPL */ +#define CONFIG_SPL_BSS_START_ADDR 0x80000000 +#define CONFIG_SPL_BSS_MAX_SIZE 0 +#else +#define CONFIG_SPL_START_S_PATH "arch/mips/mach-mtmips/mt7621/spl" +#define CONFIG_SPL_BSS_START_ADDR 0x80140000 +#define CONFIG_SPL_BSS_MAX_SIZE 0x80000 +#define CONFIG_SPL_MAX_SIZE 0x30000 +#endif

+/* Dummy value */ +#define CONFIG_SYS_UBOOT_BASE 0 +#define CONFIG_SYS_NAND_U_BOOT_OFFS 0

+#endif /* __CONFIG_MT7621_H */