x86: Add congatec conga-QA3/E3845-4G (Bay Trail) support

This patch adds support for the congatec conga-QA3/E3845-4G eMMC8 SoM,
installed on the congatec Qseven 2.0 evaluation carrier board
(conga-QEVAL).

Its port is very similar to the MinnowboardMAX port and also uses
the Intel FSP as described in doc/README.x86.

Currently supported are the following interfaces / devices:
- UART (via Winbond legacy SuperIO chip on carrier board)
- Ethernet (PCIe Intel I210 / E1000)
- SPI including SPI NOR as boot-device
- USB 2.0
- SATA via U-Boot SCSI IF
- eMMC
- Video (HDMI output @ 800x600)
- PCIe

Not supported yet is:
- I2C
- USB 3.0

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

11 files changed, 506 insertions, 0 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0b30883..4ef27dc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -8,6 +8,9 @@ choice
 	prompt "Mainboard vendor"
 	default VENDOR_EMULATION
 
+config VENDOR_CONGATEC
+	bool "congatec"
+
 config VENDOR_COREBOOT
 	bool "coreboot"
 
@@ -26,6 +29,7 @@ config VENDOR_INTEL
 endchoice
 
 # board-specific options below
+source "board/congatec/Kconfig"
 source "board/coreboot/Kconfig"
 source "board/efi/Kconfig"
 source "board/emulation/Kconfig"
diff --git a/arch/x86/dts/Makefile b/arch/x86/dts/Makefile
index fcfce95..23156bb 100644
--- a/arch/x86/dts/Makefile
+++ b/arch/x86/dts/Makefile
@@ -6,6 +6,7 @@ dtb-y += bayleybay.dtb \
 	chromebook_link.dtb \
 	chromebox_panther.dtb \
 	chromebook_samus.dtb \
+	conga-qeval20-qa3-e3845.dtb \
 	cougarcanyon2.dtb \
 	crownbay.dtb \
 	efi.dtb \
diff --git a/arch/x86/dts/conga-qeval20-qa3-e3845.dts b/arch/x86/dts/conga-qeval20-qa3-e3845.dts
new file mode 100644
index 0000000..478dece
--- /dev/null
+++ b/arch/x86/dts/conga-qeval20-qa3-e3845.dts
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * 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 = "congatec-QEVAL20-QA3-E3845";
+	compatible = "congatec,qeval20-qa3-e3845", "intel,baytrail";
+
+	aliases {
+		serial0 = &serial;
+		spi0 = &spi;
+	};
+
+	config {
+		silent_console = <0>;
+	};
+
+	pch_pinctrl {
+		compatible = "intel,x86-pinctrl";
+	};
+
+	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,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 = "stmicro,n25q064a",
+						"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,emmc-boot-mode = <2>;
+		fsp,enable-sdio;
+		fsp,enable-sdcard;
+		fsp,enable-hsuart1;
+		fsp,enable-spi;
+		fsp,enable-sata;
+		fsp,sata-mode = <1>;
+		fsp,enable-lpe;
+		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,emmc45-ddr50-enabled;
+		fsp,emmc45-retune-timer-value = <8>;
+		fsp,enable-igd;
+		fsp,enable-memory-down;
+		fsp,memory-down-params {
+			compatible = "intel,baytrail-fsp-mdp";
+			fsp,dram-speed = <2>;		/* 2=1333MHz */
+			fsp,dram-type = <1>;		/* 1=DDR3L */
+			fsp,dimm-0-enable;
+			fsp,dimm-1-enable;
+			fsp,dimm-width = <1>;		/* 1=x16, 2=x32 */
+			fsp,dimm-density = <2>;		/* 2=4Gbit */
+			fsp,dimm-bus-width = <3>;	/* 3=64bits */
+			fsp,dimm-sides = <0>;		/* 0=1 ranks -> 0x2b */
+
+			/* These following values might need a re-visit */
+			fsp,dimm-tcl = <8>;
+			fsp,dimm-trpt-rcd = <8>;
+			fsp,dimm-twr = <8>;
+			fsp,dimm-twtr = <4>;
+			fsp,dimm-trrd = <6>;
+			fsp,dimm-trtp = <4>;
+			fsp,dimm-tfaw = <22>;
+		};
+	};
+
+	microcode {
+		update@0 {
+#include "microcode/m0130673322.dtsi"
+		};
+		update@1 {
+#include "microcode/m0130679901.dtsi"
+		};
+	};
+};
diff --git a/board/congatec/Kconfig b/board/congatec/Kconfig
new file mode 100644
index 0000000..1dc306e
--- /dev/null
+++ b/board/congatec/Kconfig
@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+if VENDOR_CONGATEC
+
+choice
+	prompt "Mainboard model"
+	optional
+
+config TARGET_CONGA_QEVAL20_QA3_E3845
+	bool "congatec QEVAL 2.0 & conga-QA3/E3845"
+	help
+	  This is the congatec Qseven 2.0 evaluation carrier board
+	  (conga-QEVAL) equipped with the conga-QA3/E3845-4G SoM.
+	  It contains an Atom E3845 with Ethernet, micro-SD, USB 2,
+	  USB 3, SATA, serial console and HDMI 1.3 video out.
+	  It requires some binary blobs - see README.x86 for details.
+
+	  Note that PCIE_ECAM_BASE is set up by the FSP so the value used
+	  by U-Boot matches that value.
+
+endchoice
+
+source "board/congatec/conga-qeval20-qa3-e3845/Kconfig"
+
+endif
diff --git a/board/congatec/conga-qeval20-qa3-e3845/Kconfig b/board/congatec/conga-qeval20-qa3-e3845/Kconfig
new file mode 100644
index 0000000..9f31238
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/Kconfig
@@ -0,0 +1,28 @@
+if TARGET_CONGA_QEVAL20_QA3_E3845
+
+config SYS_BOARD
+	default "conga-qeval20-qa3-e3845"
+
+config SYS_VENDOR
+	default "congatec"
+
+config SYS_SOC
+	default "baytrail"
+
+config SYS_CONFIG_NAME
+	default "conga-qeval20-qa3-e3845"
+
+config SYS_TEXT_BASE
+	default 0xfff00000 if !EFI_STUB
+	default 0x01110000 if EFI_STUB
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select X86_RESET_VECTOR if !EFI_STUB
+	select INTEL_BAYTRAIL
+	select BOARD_ROMSIZE_KB_8192
+
+config PCIE_ECAM_BASE
+	default 0xe0000000
+
+endif
diff --git a/board/congatec/conga-qeval20-qa3-e3845/MAINTAINERS b/board/congatec/conga-qeval20-qa3-e3845/MAINTAINERS
new file mode 100644
index 0000000..5a4d4dc
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/MAINTAINERS
@@ -0,0 +1,7 @@
+congatec EVAL20-QA3-E3845
+M:	Stefan Roese <sr@denx.de>
+S:	Maintained
+F:	board/congatec/conga-qeval20-qa3-e3845
+F:	include/configs/conga-qeval20-qa3-e3845.h
+F:	configs/conga-qeval20-qa3-e3845_defconfig
+F:	arch/x86/dts/conga-qeval20-qa3-e3845.dts
diff --git a/board/congatec/conga-qeval20-qa3-e3845/Makefile b/board/congatec/conga-qeval20-qa3-e3845/Makefile
new file mode 100644
index 0000000..23b8748
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/Makefile
@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2015, Google, Inc
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= conga-qeval20-qa3.o start.o
diff --git a/board/congatec/conga-qeval20-qa3-e3845/conga-qeval20-qa3.c b/board/congatec/conga-qeval20-qa3-e3845/conga-qeval20-qa3.c
new file mode 100644
index 0000000..6a946d5
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/conga-qeval20-qa3.c
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <winbond_w83627.h>
+#include <asm/gpio.h>
+#include <asm/ibmpc.h>
+#include <asm/pnp_def.h>
+
+int board_early_init_f(void)
+{
+	/*
+	 * The FSP enables the BayTrail internal legacy UART (again).
+	 * Disable it again, so that the Winbond one can be used.
+	 */
+	setup_internal_uart(0);
+
+	/* Enable the legacy UART in the Winbond W83627 Super IO chip */
+	winbond_enable_serial(PNP_DEV(WINBOND_IO_PORT, W83627DHG_SP1),
+			      UART0_BASE, UART0_IRQ);
+
+	return 0;
+}
+
+int arch_early_init_r(void)
+{
+	return 0;
+}
diff --git a/board/congatec/conga-qeval20-qa3-e3845/start.S b/board/congatec/conga-qeval20-qa3-e3845/start.S
new file mode 100644
index 0000000..2c941a4
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/start.S
@@ -0,0 +1,9 @@
+/*
+ * Copyright (C) 2015, Google, Inc
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.globl early_board_init
+early_board_init:
+	jmp	early_board_init_ret
diff --git a/configs/conga-qeval20-qa3-e3845_defconfig b/configs/conga-qeval20-qa3-e3845_defconfig
new file mode 100644
index 0000000..24a927d
--- /dev/null
+++ b/configs/conga-qeval20-qa3-e3845_defconfig
@@ -0,0 +1,47 @@
+CONFIG_X86=y
+CONFIG_VENDOR_CONGATEC=y
+CONFIG_TARGET_CONGA_QEVAL20_QA3_E3845=y
+CONFIG_DEFAULT_DEVICE_TREE="conga-qeval20-qa3-e3845"
+CONFIG_HAVE_INTEL_ME=y
+CONFIG_ENABLE_MRC_CACHE=y
+CONFIG_SMP=y
+CONFIG_HAVE_VGA_BIOS=y
+CONFIG_GENERATE_PIRQ_TABLE=y
+CONFIG_GENERATE_MP_TABLE=y
+CONFIG_FIT=y
+CONFIG_FIT_SIGNATURE=y
+CONFIG_BOOTSTAGE=y
+CONFIG_BOOTSTAGE_REPORT=y
+CONFIG_CMD_CPU=y
+# CONFIG_CMD_IMLS is not set
+# CONFIG_CMD_FLASH is not set
+CONFIG_CMD_GPIO=y
+# CONFIG_CMD_SETEXPR is not set
+# CONFIG_CMD_NFS is not set
+CONFIG_CMD_BOOTSTAGE=y
+CONFIG_OF_CONTROL=y
+CONFIG_REGMAP=y
+CONFIG_SYSCON=y
+CONFIG_CPU=y
+CONFIG_WINBOND_W83627=y
+CONFIG_SPI_FLASH=y
+CONFIG_SPI_FLASH_GIGADEVICE=y
+CONFIG_SPI_FLASH_MACRONIX=y
+CONFIG_SPI_FLASH_STMICRO=y
+CONFIG_SPI_FLASH_WINBOND=y
+CONFIG_DM_ETH=y
+CONFIG_E1000=y
+CONFIG_DM_PCI=y
+CONFIG_DM_RTC=y
+CONFIG_DEBUG_UART=y
+CONFIG_DEBUG_UART_BASE=0x3f8
+CONFIG_DEBUG_UART_CLOCK=1843200
+CONFIG_SYS_NS16550=y
+CONFIG_ICH_SPI=y
+CONFIG_TIMER=y
+CONFIG_USB=y
+CONFIG_DM_USB=y
+CONFIG_VIDEO_VESA=y
+CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
+CONFIG_FRAMEBUFFER_VESA_MODE_114=y
+CONFIG_USE_PRIVATE_LIBGCC=y
diff --git a/include/configs/conga-qeval20-qa3-e3845.h b/include/configs/conga-qeval20-qa3-e3845.h
new file mode 100644
index 0000000..556d44e
--- /dev/null
+++ b/include/configs/conga-qeval20-qa3-e3845.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/*
+ * board/config.h - configuration options, board specific
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+#include <configs/x86-common.h>
+
+#define CONFIG_SYS_MONITOR_LEN		(1 << 20)
+#define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_ARCH_EARLY_INIT_R
+#define CONFIG_ARCH_MISC_INIT
+
+#define CONFIG_PCI_PNP
+
+#define CONFIG_STD_DEVICES_SETTINGS     "stdin=serial\0" \
+					"stdout=serial\0" \
+					"stderr=serial\0"
+
+#define CONFIG_SCSI_DEV_LIST		\
+	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_VALLEYVIEW_SATA}, \
+	{PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_VALLEYVIEW_SATA_ALT}
+
+#define CONFIG_MMC
+#define CONFIG_SDHCI
+#define CONFIG_GENERIC_MMC
+#define CONFIG_MMC_SDMA
+#define CONFIG_CMD_MMC
+
+#undef CONFIG_USB_MAX_CONTROLLER_COUNT
+#define CONFIG_USB_MAX_CONTROLLER_COUNT		1
+
+#define VIDEO_IO_OFFSET				0
+#define CONFIG_X86EMU_RAW_IO
+#define CONFIG_CMD_BMP
+
+#define CONFIG_ENV_SECT_SIZE		0x1000
+#define CONFIG_ENV_OFFSET		0x007fe000
+
+#undef CONFIG_BOOTARGS
+#undef CONFIG_BOOTCOMMAND
+
+#define CONFIG_BOOTARGS		\
+	"root=/dev/sda1 ro quiet"
+#define CONFIG_BOOTCOMMAND	\
+	"load scsi 0:1 03000000 /boot/vmlinuz-4.2.0-26-generic;" \
+	"load scsi 0:1 04000000 /boot/initrd.img-4.2.0-26-generic;" \
+	"run boot"
+
+#undef CONFIG_EXTRA_ENV_SETTINGS
+#define CONFIG_EXTRA_ENV_SETTINGS				\
+	"boot=zboot 03000000 0 04000000 ${filesize}\0"		\
+	"upd_uboot=tftp 100000 conga/u-boot.rom;"		\
+		"sf probe;sf update 100000 0 7fe000\0"
+
+#define CONFIG_PREBOOT
+
+#endif	/* __CONFIG_H */