ARM: uemd: add mb7707 board support

The MB 77.07 is a small (80x80 mm) single-board computer
developed in Russia by the RC Module.
It was developed as an educational board for К1879ХБ1Я SoC
capabilities demonstration.

See http://www.module.ru/en/catalog/micro/micro_pc/ for details.

Signed-off-by: Antony Pavlov <antonynpavlov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/arm/boards/Makefile

@@ -48,6 +48,7 @@ obj-$(CONFIG_MACH_HIGHBANK)			+= highbank/
 obj-$(CONFIG_MACH_IMX21ADS)			+= freescale-mx21-ads/
 obj-$(CONFIG_MACH_IMX233_OLINUXINO)		+= imx233-olinuxino/
 obj-$(CONFIG_MACH_IMX27ADS)			+= freescale-mx27-ads/
+obj-$(CONFIG_MACH_MB7707)			+= module-mb7707/
 obj-$(CONFIG_MACH_MIOA701)			+= mioa701/
 obj-$(CONFIG_MACH_MMCCPU)			+= mmccpu/
 obj-$(CONFIG_MACH_MX23EVK)			+= freescale-mx23-evk/

arch/arm/boards/module-mb7707/Makefile

@@ -0,0 +1,2 @@
+obj-y += board.o
+lwl-y += lowlevel.o

arch/arm/boards/module-mb7707/board.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <driver.h>
+#include <usb/ehci.h>
+#include <mach/hardware.h>
+
+static int hostname_init(void)
+{
+	barebox_set_hostname("mb7707");
+
+	return 0;
+}
+core_initcall(hostname_init);
+
+static struct ehci_platform_data ehci_pdata = {
+	.flags = 0,
+};
+
+static int mb7707_devices_init(void)
+{
+	add_usb_ehci_device(DEVICE_ID_DYNAMIC, UEMD_EHCI_BASE,
+		UEMD_EHCI_BASE + 0x10, &ehci_pdata);
+
+	return 0;
+}
+device_initcall(mb7707_devices_init);

arch/arm/boards/module-mb7707/lowlevel.c

@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014 Antony Pavlov <antonynpavlov@gmail.com>
+ *
+ * This file is part of barebox.
+ * See file CREDITS for list of people who contributed to this project.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#define __LOWLEVEL_INIT__
+
+#include <common.h>
+#include <asm/barebox-arm.h>
+#include <asm/barebox-arm-head.h>
+#include <init.h>
+#include <sizes.h>
+
+#define MB7707_SRAM_BASE 0x40000000
+#define MB7707_SRAM_SIZE SZ_128M
+
+void __naked __bare_init barebox_arm_reset_vector(void)
+{
+	arm_cpu_lowlevel_init();
+
+	barebox_arm_entry(MB7707_SRAM_BASE, MB7707_SRAM_SIZE, 0);
+}

arch/arm/dts/module-mb7707.dts

@@ -0,0 +1,24 @@
+/dts-v1/;
+
+#include "k1879hb1ya.dtsi"
+
+/ {
+	model = "Module MB 77.07";
+	compatible = "module,mb7707";
+
+	memory {
+		reg = <0x40000000 0x8000000>;
+	};
+};
+
+&clk_apb {
+	clock-frequency = <54000000>;
+};
+
+&serial0 {
+	status = "okay";
+};
+
+&timer0 {
+	status = "okay";
+};

arch/arm/mach-uemd/Kconfig

@@ -4,4 +4,13 @@ config ARCH_TEXT_BASE
 	hex
 	default 0x40800000
 
+choice
+	prompt "UEMD Board type"
+
+config MACH_MB7707
+	bool "MB7707"
+	select HAVE_DEFAULT_ENVIRONMENT_NEW
+
+endchoice
+
 endif