Inital Lenovo IdeaPad Yoga 11 commit

Open-Surface-RT · Aug 21, 2021 · 93f4636 · 93f4636
1 parent 5cbc083
commit 93f4636
Show file tree

Hide file tree

Showing 3 changed files with 137 additions and 5 deletions.
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
@@ -1289,6 +1289,7 @@ dtb-$(CONFIG_ARCH_TEGRA_3x_SOC) += \
 	tegra30-cardhu-a04.dtb \
 	tegra30-colibri-eval-v3.dtb \
 	tegra30-lenovo-ideatab-a2109a.dtb \
+	tegra30-lenovo-ideapad-yoga-11.dtb \
 	tegra30-microsoft-surface-rt.dtb \
 	tegra30-microsoft-surface-rt-efi.dtb \
 	tegra30-ouya.dtb \

diff --git a/arch/arm/boot/dts/tegra30-lenovo-ideapad-yoga-11.dts b/arch/arm/boot/dts/tegra30-lenovo-ideapad-yoga-11.dts
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "tegra30.dtsi"
+
+/ {
+	model = "Lenovo IdeaPad Yoga 11";
+	compatible = "lenovo,ideapad-yoga-11", "nvidia,tegra30";
+
+	/* clock from PMIC */
+	clk32k_in: clock@0 {
+		compatible = "fixed-clock";
+		clock-frequency = <32768>;
+		#clock-cells = <0>;
+	};
+
+	pinmux@70000868 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&state_default>;
+
+		state_default: pinmux {
+			/* HDMI HOTPLUG_DETECT */
+			/*hdmi-int-pn7 {
+				nvidia,pins = "hdmi_int_pn7";
+				nvidia,function = "hdmi";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_ENABLE>;
+				nvidia,enable-input = <TEGRA_PIN_ENABLE>;
+			};*/
+
+			/* Backlight PWM */
+			/*gmi-ad8-ph0 {
+				nvidia,pins = "gmi_ad8_ph0";
+				nvidia,function = "pwm0";
+				nvidia,pull = <TEGRA_PIN_PULL_NONE>;
+				nvidia,tristate = <TEGRA_PIN_DISABLE>;
+				nvidia,enable-input = <TEGRA_PIN_DISABLE>;
+			};*/
+		};
+	};
+
+	panel: display-panel {
+		compatible = "samsung,ltn140at29-301";
+
+		power-supply = <&vdd_pnl>;
+		backlight = <&backlight>;
+
+		port {
+			panel_input: endpoint {
+				remote-endpoint = <&lvds_encoder_output>;
+			};
+		};
+	};
+
+	vdd_pnl: vdd-panel {
+		compatible = "regulator-fixed";
+		regulator-name = "vdd_panel";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+		//gpio = <&gpio TEGRA_GPIO(L, 4) GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+	};
+
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		//enable-gpios = <&gpio TEGRA_GPIO(H, 2) GPIO_ACTIVE_HIGH>;
+		pwms = <&pwm 0 50000>;
+		brightness-levels = <1 255>;
+		num-interpolated-steps = <254>;
+		default-brightness-level = <128>;
+	};
+
+	pwm@7000a000 {
+		status = "okay";
+	};
+
+	host1x@50000000 {
+		hdmi@54280000 {
+			status = "okay";
+			//nvidia,ddc-i2c-bus = <&hdmi_ddc>;
+			nvidia,hpd-gpio = <&gpio TEGRA_GPIO(N, 7) GPIO_ACTIVE_HIGH>;
+		};
+
+		dc@54200000 {
+			rgb {
+				status = "okay";
+
+				port@0 {
+					lcd_output: endpoint {
+						remote-endpoint = <&lvds_encoder_input>;
+						bus-width = <24>;
+					};
+				};
+			};
+		};
+	};
+
+	lvds-encoder {
+		compatible = "lvds-encoder";
+
+		//powerdown-gpios = <&gpio TEGRA_GPIO(C, 1) GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				lvds_encoder_input: endpoint {
+					remote-endpoint = <&lcd_output>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				lvds_encoder_output: endpoint {
+					remote-endpoint = <&panel_input>;
+				};
+			};
+		};
+	};
+};
diff --git a/drivers/firmware/efi/libstub/efi-stub.c b/drivers/firmware/efi/libstub/efi-stub.c
@@ -135,6 +135,8 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	struct screen_info *si;
 	efi_properties_table_t *prop_tbl;
 	unsigned long max_addr;
+	/* Use https://www.rapidtables.com/convert/number/ascii-to-hex.html to create a different cmdline */
+	static u8 new_cmdline[] = {0x7a, 0x00, 0x49, 0x00, 0x6d, 0x00, 0x61, 0x00, 0x67, 0x00, 0x65, 0x00, 0x20, 0x00, 0x64, 0x00, 0x74, 0x00, 0x62, 0x00, 0x3d, 0x00, 0x74, 0x00, 0x65, 0x00, 0x67, 0x00, 0x72, 0x00, 0x61, 0x00, 0x33, 0x00, 0x30, 0x00, 0x2d, 0x00, 0x6c, 0x00, 0x65, 0x00, 0x6e, 0x00, 0x6f, 0x00, 0x76, 0x00, 0x6f, 0x00, 0x2d, 0x00, 0x69, 0x00, 0x64, 0x00, 0x65, 0x00, 0x61, 0x00, 0x70, 0x00, 0x61, 0x00, 0x64, 0x00, 0x2d, 0x00, 0x79, 0x00, 0x6f, 0x00, 0x67, 0x00, 0x61, 0x00, 0x2d, 0x00, 0x31, 0x00, 0x31, 0x00, 0x2e, 0x00, 0x64, 0x00, 0x74, 0x00, 0x62, 0x00, 0x20, 0x00, 0x65, 0x00, 0x61, 0x00, 0x72, 0x00, 0x6c, 0x00, 0x79, 0x00, 0x70, 0x00, 0x72, 0x00, 0x69, 0x00, 0x6e, 0x00, 0x74, 0x00, 0x6b, 0x00, 0x3d, 0x00, 0x65, 0x00, 0x66, 0x00, 0x69, 0x00, 0x2c, 0x00, 0x6b, 0x00, 0x65, 0x00, 0x65, 0x00, 0x70, 0x00, 0x20, 0x00, 0x62, 0x00, 0x6f, 0x00, 0x6f, 0x00, 0x74, 0x00, 0x5f, 0x00, 0x64, 0x00, 0x65, 0x00, 0x6c, 0x00, 0x61, 0x00, 0x79, 0x00, 0x3d, 0x00, 0x31, 0x00, 0x30, 0x00, 0x30, 0x00, 0x30, 0x00, 0x20, 0x00, 0x63, 0x00, 0x6f, 0x00, 0x6e, 0x00, 0x73, 0x00, 0x6f, 0x00, 0x6c, 0x00, 0x65, 0x00, 0x3d, 0x00, 0x74, 0x00, 0x74, 0x00, 0x79, 0x00, 0x30, 0x00, 0x20, 0x00, 0x72, 0x00, 0x6f, 0x00, 0x6f, 0x00, 0x74, 0x00, 0x77, 0x00, 0x61, 0x00, 0x69, 0x00, 0x74, 0x00};
 
 	efi_system_table = sys_table_arg;
 
@@ -160,6 +162,10 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 		goto fail;
 	}
 
+	/* Patch kernel command line */
+	image->load_options = new_cmdline;
+	image->load_options_size = sizeof(new_cmdline) / 2;
+
 	/*
 	 * Get the command line from EFI, using the LOADED_IMAGE
 	 * protocol. We are going to copy the command line into the
@@ -211,12 +217,9 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
 	secure_boot = efi_get_secureboot();
 
 	/*
-	 * Unauthenticated device tree data is a security hazard, so ignore
-	 * 'dtb=' unless UEFI Secure Boot is disabled.  We assume that secure
-	 * boot is enabled if we can't determine its state.
+	 * Ignoring secure boot state. Loading a DTB either way.
 	 */
-	if (!IS_ENABLED(CONFIG_EFI_ARMSTUB_DTB_LOADER) ||
-	     secure_boot != efi_secureboot_mode_disabled) {
+	if (!IS_ENABLED(CONFIG_EFI_ARMSTUB_DTB_LOADER)) {
 		if (strstr(cmdline_ptr, "dtb="))
 			efi_err("Ignoring DTB from command line.\n");
 	} else {