Add a generic board

In this generic configuration, the board can be run in the
or1ksim simulator with the linux configuration file using
the UART to print the console.

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arch/openrisc/boards/generic/Makefile

@@ -0,0 +1 @@
+obj-y += generic.o

arch/openrisc/boards/generic/config.h

@@ -0,0 +1,28 @@
+#ifndef _GENERIC_NAMES_H_
+#define _GENERIC_NAMES_H_
+
+#define CONFIG_SYS_CLK_FREQ		20000000
+
+#define OPENRISC_TIMER_FREQ		20000000
+
+#define OPENRISC_SOPC_MEMORY_BASE	0x00000000
+#define OPENRISC_SOPC_MEMORY_SIZE	0x02000000
+
+#define OPENRISC_SOPC_UART_BASE		0x90000000
+#define CONFIG_SYS_UART_FREQ		CONFIG_SYS_CLK_FREQ
+#define CONFIG_SYS_UART_BAUD		115200
+
+/* We reserve 256K for barebox */
+#define BAREBOX_RESERVED_SIZE		0x40000
+
+/* Barebox will be at top of main memory */
+#define OPENRISC_SOPC_TEXT_BASE		(OPENRISC_SOPC_MEMORY_BASE + OPENRISC_SOPC_MEMORY_SIZE - BAREBOX_RESERVED_SIZE)
+
+/*
+* TEXT_BASE is defined here because STACK_BASE definition
+*  in include/asm-generic/memory_layout.h uses this name
+*/
+
+#define TEXT_BASE                       OPENRISC_SOPC_TEXT_BASE
+
+#endif

arch/openrisc/boards/generic/env/config

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+# can be either 'net' or 'flash'
+kernel=flash
+root=flash
+
+kernel_loc=nor
+kernelimage_type=uimage
+
+# use 'dhcp' todo dhcp in barebox and in kernel
+ip=none
+
+autoboot_timeout=3
+
+nor_parts="256k(barebox),128k(env),4M(kernel),-(rootfs)"
+
+bootargs="console=ttyS0,9600"
+
+# set a fancy prompt (if support is compiled in)
+PS1="\e[1;33mbarebox@\e[1;32mor32:\w\e[0m "

arch/openrisc/boards/generic/generic.c

@@ -0,0 +1,19 @@
+#include <common.h>
+#include <init.h>
+#include <driver.h>
+#include <partition.h>
+#include <ns16550.h>
+
+static struct NS16550_plat serial_plat = {
+	.clock = 50000000,      /* 48MHz (APLL96/2) */
+	.shift = 0,
+};
+
+static int openrisc_console_init(void)
+{
+	/* Register the serial port */
+	add_ns16550_device(-1, OPENRISC_SOPC_UART_BASE, 1024, IORESOURCE_MEM_8BIT, &serial_plat);
+	return 0;
+}
+
+console_initcall(openrisc_console_init);