nios2: add nios2-generic board

This is a generic approach to port u-boot for nios2 boards.
You may find the usage of this approach on the nioswiki,
http://nioswiki.com/DasUBoot

A fpga parameter file, which contains base address information
and drivers declaration, is generated from Altera's hardware system
description sopc file using tools.

The example fpga parameter file is compatible with EP1C20, EP1S10
and EP1S40 boards. So these boards can be removed after this commit.
Though epcs controller is removed to cut the dependency of altera_spi
driver.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>

1 files changed, 153 insertions, 0 deletions

diff --git a/include/configs/nios2-generic.h b/include/configs/nios2-generic.h
new file mode 100644
index 0000000..e83e1e3
--- /dev/null
+++ b/include/configs/nios2-generic.h
@@ -0,0 +1,153 @@
+/*
+ * (C) Copyright 2005, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ * (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
+ *
+ * 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 as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * BOARD/CPU
+ */
+#include "../board/altera/nios2-generic/custom_fpga.h" /* fpga parameters */
+#define CONFIG_BOARD_NAME "nios2-generic" /* custom board name */
+#define CONFIG_BOARD_EARLY_INIT_F	/* enable early board-spec. init */
+#define CONFIG_SYS_NIOS_SYSID_BASE	CONFIG_SYS_SYSID_BASE
+
+/*
+ * SERIAL
+ */
+#define CONFIG_ALTERA_UART
+#if defined(CONFIG_ALTERA_JTAG_UART)
+# define CONFIG_SYS_NIOS_CONSOLE	CONFIG_SYS_JTAG_UART_BASE
+#else
+# define CONFIG_SYS_NIOS_CONSOLE	CONFIG_SYS_UART_BASE
+#endif
+
+#define CONFIG_ALTERA_JTAG_UART_BYPASS
+#define CONFIG_SYS_NIOS_FIXEDBAUD
+#define CONFIG_BAUDRATE		CONFIG_SYS_UART_BAUD
+#define CONFIG_SYS_BAUDRATE_TABLE	{CONFIG_BAUDRATE}
+#define CONFIG_SYS_CONSOLE_INFO_QUIET	/* Suppress console info */
+
+/*
+ * TIMER
+ */
+#define CONFIG_SYS_NIOS_TMRBASE	CONFIG_SYS_TIMER_BASE
+#define CONFIG_SYS_NIOS_TMRIRQ		CONFIG_SYS_TIMER_IRQ
+#define CONFIG_SYS_HZ			1000	/* Always 1000 */
+#define CONFIG_SYS_NIOS_TMRMS		10	/* Desired period (msec)*/
+#define CONFIG_SYS_NIOS_TMRCNT \
+	(CONFIG_SYS_NIOS_TMRMS * (CONFIG_SYS_TIMER_FREQ / 1000) - 1)
+
+/*
+ * STATUS LED
+ */
+#define CONFIG_STATUS_LED		/* Enable status driver */
+#define CONFIG_EPLED			/* Enable LED PIO driver */
+#define CONFIG_SYS_LEDPIO_ADDR		LED_PIO_BASE
+
+#define STATUS_LED_BIT			1	/* Bit-0 on PIO */
+#define STATUS_LED_STATE		1	/* Blinking */
+#define STATUS_LED_PERIOD	(500 / CONFIG_SYS_NIOS_TMRMS) /* 500 msec */
+
+/*
+ * BOOTP options
+ */
+#define CONFIG_BOOTP_BOOTFILESIZE
+#define CONFIG_BOOTP_BOOTPATH
+#define CONFIG_BOOTP_GATEWAY
+#define CONFIG_BOOTP_HOSTNAME
+
+/*
+ * Command line configuration.
+ */
+#include <config_cmd_default.h>
+#undef CONFIG_CMD_BOOTD
+#undef CONFIG_CMD_FPGA
+#undef CONFIG_CMD_IMLS
+#undef CONFIG_CMD_ITEST
+#undef CONFIG_CMD_NFS
+#undef CONFIG_CMD_SETGETDCR
+#undef CONFIG_CMD_XIMG
+
+#ifdef CONFIG_CMD_NET
+# define CONFIG_NET_MULTI
+# define CONFIG_CMD_DHCP
+# define CONFIG_CMD_PING
+#endif
+
+/*
+ * ENVIRONMENT -- Put environment in sector CONFIG_SYS_MONITOR_LEN above
+ * CONFIG_SYS_RESET_ADDR, since we assume the monitor is stored at the
+ * reset address, no? This will keep the environment in user region
+ * of flash. NOTE: the monitor length must be multiple of sector size
+ * (which is common practice).
+ */
+#define CONFIG_ENV_IS_IN_FLASH
+
+#define CONFIG_ENV_SIZE		0x10000	/* 64k, 1 sector */
+#define CONFIG_ENV_OVERWRITE		/* Serial change Ok	*/
+#define CONFIG_ENV_ADDR		((CONFIG_SYS_RESET_ADDR + \
+					  CONFIG_SYS_MONITOR_LEN) | \
+					 CONFIG_SYS_FLASH_BASE)
+
+/*
+ * MEMORY ORGANIZATION
+ *	-Monitor at top of sdram.
+ *	-The heap is placed below the monitor
+ *	-Global data is placed below the heap.
+ *	-The stack is placed below global data (&grows down).
+ */
+#define CONFIG_MONITOR_IS_IN_RAM
+#define CONFIG_SYS_MONITOR_LEN		0x40000	/* Reserve 256k */
+#define CONFIG_SYS_MONITOR_BASE	(CONFIG_SYS_SDRAM_BASE + \
+					 CONFIG_SYS_SDRAM_SIZE - \
+					 CONFIG_SYS_MONITOR_LEN)
+#define CONFIG_SYS_GBL_DATA_SIZE	256	/* Global data size rsvd */
+#define CONFIG_SYS_MALLOC_LEN		(CONFIG_ENV_SIZE + 0x20000)
+#define CONFIG_SYS_MALLOC_BASE		(CONFIG_SYS_MONITOR_BASE - \
+					 CONFIG_SYS_MALLOC_LEN)
+#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_MALLOC_BASE - \
+					 CONFIG_SYS_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP		CONFIG_SYS_GBL_DATA_OFFSET
+
+/*
+ * MISC
+ */
+#define CONFIG_SYS_LONGHELP		/* Provide extended help */
+#define CONFIG_SYS_PROMPT		"==> "	/* Command prompt	*/
+#define CONFIG_SYS_CBSIZE		256	/* Console I/O buf size */
+#define CONFIG_SYS_MAXARGS		16	/* Max command args	*/
+#define CONFIG_SYS_BARGSIZE		CONFIG_SYS_CBSIZE /* Bootarg buf size */
+#define CONFIG_SYS_PBSIZE		(CONFIG_SYS_CBSIZE + \
+					sizeof(CONFIG_SYS_PROMPT) + \
+					 16)	/* Print buf size */
+#define CONFIG_SYS_LOAD_ADDR		CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_START	CONFIG_SYS_SDRAM_BASE
+#define CONFIG_SYS_MEMTEST_END		(CONFIG_SYS_INIT_SP - 0x20000)
+#define CONFIG_CMDLINE_EDITING
+
+#define CONFIG_SYS_HUSH_PARSER
+#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "
+
+#endif /* __CONFIG_H */