x86: Add Advantech SOM-DB5800/SOM-6867 support

Add support for Advantech SOM-DB5800 with the SOM-6867 installed.
This is very similar to conga-qeval20-qa3-e3845 in that there is a
reference carrier board (SOM-DB5800) with a Baytrail based SoM (SOM-6867)
installed.

Currently supported:
 - 2x UART (From ITE EC on SOM-6867) routed to COM3/4 connectors on
   SOM-DB5800.
 - 4x USB 2.0 (EHCI)
 - Video
 - SATA
 - Ethernet
 - PCIe
 - Realtek ALC892 HD Audio
   Pad configuration for HDA_RSTB, HDA_SYNC, HDA_CLK, HDA_SDO
   HDA_SDI0 is set in DT to enable HD Audio codec.
   Pin defaults for codec pin complexs are not changed.

Not supported:
 - Winbond Super I/O (Must be disabled with jumpers on SOM-DB8500)
 - USB 3.0 (XHCI)
 - TPM

Signed-off-by: George McCollister <george.mccollister@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

3 files changed, 295 insertions, 1 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 29d2307..29d1120 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -8,6 +8,9 @@ choice
 	prompt "Mainboard vendor"
 	default VENDOR_EMULATION
 
+config VENDOR_ADVANTECH
+	bool "advantech"
+
 config VENDOR_CONGATEC
 	bool "congatec"
 
@@ -29,6 +32,7 @@ config VENDOR_INTEL
 endchoice
 
 # board-specific options below
+source "board/advantech/Kconfig"
 source "board/congatec/Kconfig"
 source "board/coreboot/Kconfig"
 source "board/efi/Kconfig"
diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
index 23156bb..4f07f41 100644
--- a/arch/x86/dts/Makefile
+++ b/arch/x86/dts/Makefile
@@ -14,7 +14,8 @@ dtb-y += bayleybay.dtb \
 	minnowmax.dtb \
 	qemu-x86_i440fx.dtb \
 	qemu-x86_q35.dtb \
-	broadwell_som-6896.dtb
+	broadwell_som-6896.dtb \
+	baytrail_som-db5800-som-6867.dtb
 
 targets += $(dtb-y)
 
diff --git a/arch/x86/dts/baytrail_som-db5800-som-6867.dts b/arch/x86/dts/baytrail_som-db5800-som-6867.dts
new file mode 100644
index 0000000..64e2e52
--- /dev/null
+++ b/arch/x86/dts/baytrail_som-db5800-som-6867.dts
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ * Copyright (C) 2016, George McCollister <george.mccollister@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/x86-gpio.h>
+#include <dt-bindings/interrupt-router/intel-irq.h>
+
+/include/ "skeleton.dtsi"
+/include/ "serial.dtsi"
+/include/ "rtc.dtsi"
+/include/ "tsc_timer.dtsi"
+
+/ {
+	model = "Advantech SOM-DB5800-SOM-6867";
+	compatible = "advantech,som-db5800-som-6867", "intel,baytrail";
+
+	aliases {
+		serial0 = &serial;
+		spi0 = &spi;
+	};
+
+	config {
+		silent_console = <0>;
+	};
+
+	pch_pinctrl {
+		compatible = "intel,x86-pinctrl";
+		reg = <0 0>;
+
+		/* HDA_RSTB */
+		soc_gpio_s0_8@0 {
+			pad-offset = <0x220>;
+			mode-func = <2>;
+		};
+
+		/* HDA_SYNC */
+		soc_gpio_s0_9@0 {
+			pad-offset = <0x250>;
+			mode-func = <2>;
+			pull-assign = <1>;
+		};
+
+		/* HDA_CLK */
+		soc_gpio_s0_10@0 {
+			pad-offset = <0x240>;
+			mode-func = <2>;
+		};
+
+		/* HDA_SDO */
+		soc_gpio_s0_11@0 {
+			pad-offset = <0x260>;
+			mode-func = <2>;
+			pull-assign = <1>;
+		};
+
+		/* HDA_SDI0 */
+		soc_gpio_s0_12@0 {
+			pad-offset = <0x270>;
+			mode-func = <2>;
+		};
+	};
+
+	chosen {
+		stdout-path = "/serial";
+	};
+
+	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		cpu@0 {
+			device_type = "cpu";
+			compatible = "intel,baytrail-cpu";
+			reg = <0>;
+			intel,apic-id = <0>;
+		};
+
+		cpu@1 {
+			device_type = "cpu";
+			compatible = "intel,baytrail-cpu";
+			reg = <1>;
+			intel,apic-id = <2>;
+		};
+
+		cpu@2 {
+			device_type = "cpu";
+			compatible = "intel,baytrail-cpu";
+			reg = <2>;
+			intel,apic-id = <4>;
+		};
+
+		cpu@3 {
+			device_type = "cpu";
+			compatible = "intel,baytrail-cpu";
+			reg = <3>;
+			intel,apic-id = <6>;
+		};
+
+	};
+
+	pci {
+		compatible = "intel,pci-baytrail", "pci-x86";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		u-boot,dm-pre-reloc;
+		ranges = <0x02000000 0x0 0x80000000 0x80000000 0 0x40000000
+			  0x42000000 0x0 0xc0000000 0xc0000000 0 0x20000000
+			  0x01000000 0x0 0x2000 0x2000 0 0xe000>;
+
+		pch@1f,0 {
+			reg = <0x0000f800 0 0 0 0>;
+			compatible = "pci8086,0f1c", "intel,pch9";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			irq-router {
+				compatible = "intel,irq-router";
+				intel,pirq-config = "ibase";
+				intel,ibase-offset = <0x50>;
+				intel,actl-addr = <0>;
+				intel,pirq-link = <8 8>;
+				intel,pirq-mask = <0xdee0>;
+				intel,pirq-routing = <
+					/* BayTrail PCI devices */
+					PCI_BDF(0, 2, 0) INTA PIRQA
+					PCI_BDF(0, 3, 0) INTA PIRQA
+					PCI_BDF(0, 16, 0) INTA PIRQA
+					PCI_BDF(0, 17, 0) INTA PIRQA
+					PCI_BDF(0, 18, 0) INTA PIRQA
+					PCI_BDF(0, 19, 0) INTA PIRQA
+					PCI_BDF(0, 20, 0) INTA PIRQA
+					PCI_BDF(0, 21, 0) INTA PIRQA
+					PCI_BDF(0, 22, 0) INTA PIRQA
+					PCI_BDF(0, 23, 0) INTA PIRQA
+					PCI_BDF(0, 24, 0) INTA PIRQA
+					PCI_BDF(0, 24, 1) INTC PIRQC
+					PCI_BDF(0, 24, 2) INTD PIRQD
+					PCI_BDF(0, 24, 3) INTB PIRQB
+					PCI_BDF(0, 24, 4) INTA PIRQA
+					PCI_BDF(0, 24, 5) INTC PIRQC
+					PCI_BDF(0, 24, 6) INTD PIRQD
+					PCI_BDF(0, 24, 7) INTB PIRQB
+					PCI_BDF(0, 26, 0) INTA PIRQA
+					PCI_BDF(0, 27, 0) INTA PIRQA
+					PCI_BDF(0, 28, 0) INTA PIRQA
+					PCI_BDF(0, 28, 1) INTB PIRQB
+					PCI_BDF(0, 28, 2) INTC PIRQC
+					PCI_BDF(0, 28, 3) INTD PIRQD
+					PCI_BDF(0, 29, 0) INTA PIRQA
+					PCI_BDF(0, 30, 0) INTA PIRQA
+					PCI_BDF(0, 30, 1) INTD PIRQD
+					PCI_BDF(0, 30, 2) INTB PIRQB
+					PCI_BDF(0, 30, 3) INTC PIRQC
+					PCI_BDF(0, 30, 4) INTD PIRQD
+					PCI_BDF(0, 30, 5) INTB PIRQB
+					PCI_BDF(0, 31, 3) INTB PIRQB
+
+					/*
+					 * PCIe root ports downstream
+					 * interrupts
+					 */
+					PCI_BDF(1, 0, 0) INTA PIRQA
+					PCI_BDF(1, 0, 0) INTB PIRQB
+					PCI_BDF(1, 0, 0) INTC PIRQC
+					PCI_BDF(1, 0, 0) INTD PIRQD
+					PCI_BDF(2, 0, 0) INTA PIRQB
+					PCI_BDF(2, 0, 0) INTB PIRQC
+					PCI_BDF(2, 0, 0) INTC PIRQD
+					PCI_BDF(2, 0, 0) INTD PIRQA
+					PCI_BDF(3, 0, 0) INTA PIRQC
+					PCI_BDF(3, 0, 0) INTB PIRQD
+					PCI_BDF(3, 0, 0) INTC PIRQA
+					PCI_BDF(3, 0, 0) INTD PIRQB
+					PCI_BDF(4, 0, 0) INTA PIRQD
+					PCI_BDF(4, 0, 0) INTB PIRQA
+					PCI_BDF(4, 0, 0) INTC PIRQB
+					PCI_BDF(4, 0, 0) INTD PIRQC
+				>;
+			};
+
+			spi: spi {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "intel,ich9-spi";
+				spi-flash@0 {
+					#address-cells = <1>;
+					#size-cells = <1>;
+					reg = <0>;
+					compatible = "macronix,mx25l6405d",
+						"spi-flash";
+					memory-map = <0xff800000 0x00800000>;
+					rw-mrc-cache {
+						label = "rw-mrc-cache";
+						reg = <0x006f0000 0x00010000>;
+					};
+				};
+			};
+
+			gpioa {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0 0x20>;
+				bank-name = "A";
+			};
+
+			gpiob {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0x20 0x20>;
+				bank-name = "B";
+			};
+
+			gpioc {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0x40 0x20>;
+				bank-name = "C";
+			};
+
+			gpiod {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0x60 0x20>;
+				bank-name = "D";
+			};
+
+			gpioe {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0x80 0x20>;
+				bank-name = "E";
+			};
+
+			gpiof {
+				compatible = "intel,ich6-gpio";
+				u-boot,dm-pre-reloc;
+				reg = <0xA0 0x20>;
+				bank-name = "F";
+			};
+		};
+	};
+
+	fsp {
+		compatible = "intel,baytrail-fsp";
+		fsp,mrc-init-tseg-size = <0>;
+		fsp,mrc-init-mmio-size = <0x800>;
+		fsp,mrc-init-spd-addr1 = <0xa0>;
+		fsp,mrc-init-spd-addr2 = <0xa2>;
+		fsp,enable-spi;
+		fsp,enable-sata;
+		fsp,sata-mode = <1>;
+		fsp,enable-azalia;
+		fsp,lpss-sio-enable-pci-mode;
+		fsp,enable-dma0;
+		fsp,enable-dma1;
+		fsp,enable-i2c0;
+		fsp,enable-i2c1;
+		fsp,enable-i2c2;
+		fsp,enable-i2c3;
+		fsp,enable-i2c4;
+		fsp,enable-i2c5;
+		fsp,enable-i2c6;
+		fsp,enable-pwm0;
+		fsp,enable-pwm1;
+		fsp,igd-dvmt50-pre-alloc = <2>;
+		fsp,aperture-size = <2>;
+		fsp,gtt-size = <2>;
+		fsp,scc-enable-pci-mode;
+		fsp,os-selection = <4>;
+		fsp,enable-igd;
+		fsp,serial-debug-port-address = <0x3f8>;
+		fsp,serial-debug-port-type = <1>;
+	};
+
+	microcode {
+		update@0 {
+#include "microcode/m0130673325.dtsi"
+		};
+		update@1 {
+#include "microcode/m0130679907.dtsi"
+		};
+	};
+
+};