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>

MAINTAINERS

@@ -858,6 +858,7 @@ Scott McNutt <smcnutt@psyent.com>
 	EP1C20		Nios-II
 	EP1S10		Nios-II
 	EP1S40		Nios-II
+	nios2-generic	Nios-II
 
 #########################################################################
 # MicroBlaze Systems:							#

MAKEALL

@@ -830,6 +830,7 @@ LIST_nios2="		\
 	EP1S40		\
 	PCI5441		\
 	PK1C20		\
+	nios2-generic	\
 "
 
 #########################################################################

Makefile

@@ -3534,6 +3534,12 @@ PK1C20_config : unconfig
 PCI5441_config : unconfig
 	@$(MKCONFIG)  PCI5441 nios2 nios2 pci5441 psyent
 
+# nios2 generic boards
+NIOS2_GENERIC = nios2-generic
+
+$(NIOS2_GENERIC:%=%_config) : unconfig
+	@$(MKCONFIG) $(@:_config=) nios2 nios2 nios2-generic altera
+
 #========================================================================
 ## Microblaze
 #========================================================================

board/altera/nios2-generic/Makefile

@@ -0,0 +1,59 @@
+#
+# (C) Copyright 2001-2006
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+# (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
+#
+
+include $(TOPDIR)/config.mk
+ifneq ($(OBJTREE),$(SRCTREE))
+$(shell mkdir -p $(obj)../common)
+endif
+
+LIB	= $(obj)lib$(BOARD).a
+
+COBJS-y	:= $(BOARD).o
+COBJS-$(CONFIG_CMD_IDE) += ../common/cfide.o
+COBJS-$(CONFIG_EPLED) += ../common/epled.o
+COBJS-$(CONFIG_SEVENSEG) += ../common/sevenseg.o
+
+SOBJS-y	:= text_base.o
+
+SRCS	:= $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
+OBJS	:= $(addprefix $(obj),$(COBJS-y))
+SOBJS	:= $(addprefix $(obj),$(SOBJS-y))
+
+$(LIB):	$(obj).depend $(OBJS) $(SOBJS)
+	$(AR) $(ARFLAGS) $@ $(OBJS) $(SOBJS)
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak $(obj).depend
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################

board/altera/nios2-generic/config.mk

@@ -0,0 +1,34 @@
+#
+# (C) Copyright 2005, Psyent Corporation <www.psyent.com>
+# Scott McNutt <smcnutt@psyent.com>
+#
+# 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
+#
+
+# we get text_base from board config header, so do not use this
+#TEXT_BASE = do-not-use-me
+
+PLATFORM_CPPFLAGS += -mno-hw-div -mno-hw-mul
+PLATFORM_CPPFLAGS += -I$(TOPDIR)/board/$(VENDOR)/include
+
+ifeq ($(debug),1)
+PLATFORM_CPPFLAGS += -DDEBUG
+endif
+
+LDSCRIPT := $(SRCTREE)/board/$(VENDOR)/$(BOARD)/u-boot.lds

board/altera/nios2-generic/custom_fpga.h

@@ -0,0 +1,66 @@
+/*
+ * (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
+ *
+ * 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 file is generated by sopc-create-config-files.
+ */
+#ifndef _CUSTOM_FPGA_H_
+#define _CUSTOM_FPGA_H_
+
+/* generated from std_1c20.sopc */
+
+/* cpu.data_master is a altera_nios2 */
+#define CONFIG_SYS_CLK_FREQ 50000000
+#define CONFIG_SYS_RESET_ADDR 0x00000000
+#define CONFIG_SYS_EXCEPTION_ADDR 0x01000020
+#define CONFIG_SYS_ICACHE_SIZE 4096
+#define CONFIG_SYS_ICACHELINE_SIZE 32
+#define CONFIG_SYS_DCACHE_SIZE 2048
+#define CONFIG_SYS_DCACHELINE_SIZE 4
+
+/* sdram.s1 is a altera_avalon_new_sdram_controller */
+#define CONFIG_SYS_SDRAM_BASE 0x01000000
+#define CONFIG_SYS_SDRAM_SIZE 0x01000000
+
+/* uart1.s1 is a altera_avalon_uart */
+#define CONFIG_SYS_UART_BASE 0x82120840
+#define CONFIG_SYS_UART_FREQ 50000000
+#define CONFIG_SYS_UART_BAUD 115200
+
+/* lan91c111.s1 is a altera_avalon_lan91c111 */
+#define CONFIG_SMC91111_BASE 0x82110300
+#define CONFIG_SMC91111
+#define CONFIG_SMC_USE_32_BIT
+
+/* jtag_uart.avalon_jtag_slave is a altera_avalon_jtag_uart */
+#define CONFIG_SYS_JTAG_UART_BASE 0x821208b0
+
+/* led_pio.s1 is a altera_avalon_pio */
+#define LED_PIO_BASE 0x82120870
+
+/* high_res_timer.s1 is a altera_avalon_timer */
+#define CONFIG_SYS_TIMER_BASE 0x82120820
+#define CONFIG_SYS_TIMER_IRQ 3
+#define CONFIG_SYS_TIMER_FREQ 50000000
+
+/* ext_flash.s1 is a altera_avalon_cfi_flash */
+#define CONFIG_SYS_FLASH_BASE 0x80000000
+#define CONFIG_FLASH_CFI_DRIVER
+#define CONFIG_SYS_CFI_FLASH_STATUS_POLL /* fix amd flash issue */
+#define CONFIG_SYS_FLASH_CFI
+#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE
+#define CONFIG_SYS_FLASH_PROTECTION
+#define CONFIG_SYS_MAX_FLASH_BANKS 1
+#define CONFIG_SYS_MAX_FLASH_SECT 1024
+
+/* ext_ram.s1 is a altera_nios_dev_kit_stratix_edition_sram2 */
+#define CONFIG_SYS_SRAM_BASE 0x02000000
+#define CONFIG_SYS_SRAM_SIZE 0x00100000
+
+/* sysid.control_slave is a altera_avalon_sysid */
+#define CONFIG_SYS_SYSID_BASE 0x821208b8
+
+#endif /* _CUSTOM_FPGA_H_ */

board/altera/nios2-generic/nios2-generic.c

@@ -0,0 +1,68 @@
+/*
+ * (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
+ */
+
+#include <common.h>
+#include <netdev.h>
+
+void text_base_hook(void); /* nop hook for text_base.S */
+
+int board_early_init_f(void)
+{
+	text_base_hook();
+	return 0;
+}
+
+int checkboard(void)
+{
+	printf("BOARD : %s\n", CONFIG_BOARD_NAME);
+	return 0;
+}
+
+phys_size_t initdram(int board_type)
+{
+	return 0;
+}
+
+#ifdef CONFIG_CMD_NET
+int board_eth_init(bd_t *bis)
+{
+	int rc = 0;
+#ifdef CONFIG_SMC91111
+	rc += smc91111_initialize(0, CONFIG_SMC91111_BASE);
+#endif
+#ifdef CONFIG_DRIVER_DM9000
+	rc += dm9000_initialize(bis);
+#endif
+#ifdef CONFIG_ALTERA_TSE
+	rc += altera_tse_initialize(0,
+				    CONFIG_SYS_ALTERA_TSE_MAC_BASE,
+				    CONFIG_SYS_ALTERA_TSE_SGDMA_RX_BASE,
+				    CONFIG_SYS_ALTERA_TSE_SGDMA_TX_BASE);
+#endif
+#ifdef CONFIG_ETHOC
+	rc += ethoc_initialize(0, CONFIG_SYS_ETHOC_BASE);
+#endif
+	return rc;
+}
+#endif

board/altera/nios2-generic/text_base.S

@@ -0,0 +1,21 @@
+/*
+ * text_base
+ *
+ * (C) Copyright 2010, Thomas Chou <thomas@wytron.com.tw>
+ *
+ * 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.
+ */
+#include <config.h>
+
+#ifdef CONFIG_SYS_MONITOR_BASE
+	.text
+	/* text base used in link script u-boot.lds */
+	.global text_base
+	.equ text_base,CONFIG_SYS_MONITOR_BASE
+	/* dummy func to let linker include this file */
+	.global text_base_hook
+text_base_hook:
+	ret
+#endif

board/altera/nios2-generic/u-boot.lds

@@ -0,0 +1,136 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@psyent.com>
+ *
+ * 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
+ */
+
+
+OUTPUT_FORMAT("elf32-littlenios2")
+OUTPUT_ARCH(nios2)
+ENTRY(_start)
+
+SECTIONS
+{
+	. = text_base;
+	.text :
+	{
+	  arch/nios2/cpu/start.o (.text)
+	  *(.text)
+	  *(.text.*)
+	  *(.gnu.linkonce.t*)
+	  *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*)))
+	  *(.gnu.linkonce.r*)
+	}
+	. = ALIGN (4);
+	_etext = .;
+	PROVIDE (etext = .);
+
+	/* CMD TABLE - sandwich this in between text and data so
+	 * the initialization code relocates the command table as
+	 * well -- admittedly, this is just pure laziness ;-)
+	 */
+	__u_boot_cmd_start = .;
+	.u_boot_cmd :
+	{
+	  *(.u_boot_cmd)
+	}
+	. = ALIGN(4);
+	__u_boot_cmd_end = .;
+
+	/* INIT DATA sections - "Small" data (see the gcc -G option)
+	 * is always gp-relative. Here we make all init data sections
+	 * adjacent to simplify the startup code -- and provide
+	 * the global pointer for gp-relative access.
+	 */
+	_data = .;
+	.data :
+	{
+	  *(.data)
+	  *(.data.*)
+	  *(.gnu.linkonce.d*)
+	}
+
+	. = ALIGN(16);
+	_gp = .;			/* Global pointer addr */
+	PROVIDE (gp = .);
+
+	.sdata :
+	{
+	  *(.sdata)
+	  *(.sdata.*)
+	  *(.gnu.linkonce.s.*)
+	}
+	. = ALIGN(4);
+
+	_edata = .;
+	PROVIDE (edata = .);
+
+	/* UNINIT DATA - Small uninitialized data is first so it's
+	 * adjacent to sdata and can be referenced via gp. The normal
+	 * bss follows. We keep it adjacent to simplify init code.
+	 */
+	__bss_start = .;
+	.sbss (NOLOAD) :
+	{
+	  *(.sbss)
+	  *(.sbss.*)
+	  *(.gnu.linkonce.sb.*)
+	  *(.scommon)
+	}
+	. = ALIGN(4);
+	.bss (NOLOAD) :
+	{
+	  *(.bss)
+	  *(.bss.*)
+	  *(.dynbss)
+	  *(COMMON)
+	  *(.scommon)
+	}
+	. = ALIGN(4);
+	_end = .;
+	PROVIDE (end = .);
+
+	/* DEBUG -- symbol table, string table, etc. etc.
+	 */
+	.stab 0 : { *(.stab) }
+	.stabstr 0 : { *(.stabstr) }
+	.stab.excl 0 : { *(.stab.excl) }
+	.stab.exclstr 0 : { *(.stab.exclstr) }
+	.stab.index 0 : { *(.stab.index) }
+	.stab.indexstr 0 : { *(.stab.indexstr) }
+	.comment 0 : { *(.comment) }
+	.debug		0 : { *(.debug) }
+	.line		0 : { *(.line) }
+	.debug_srcinfo	0 : { *(.debug_srcinfo) }
+	.debug_sfnames	0 : { *(.debug_sfnames) }
+	.debug_aranges	0 : { *(.debug_aranges) }
+	.debug_pubnames 0 : { *(.debug_pubnames) }
+	.debug_info	0 : { *(.debug_info) }
+	.debug_abbrev	0 : { *(.debug_abbrev) }
+	.debug_line	0 : { *(.debug_line) }
+	.debug_frame	0 : { *(.debug_frame) }
+	.debug_str	0 : { *(.debug_str) }
+	.debug_loc	0 : { *(.debug_loc) }
+	.debug_macinfo	0 : { *(.debug_macinfo) }
+	.debug_weaknames 0 : { *(.debug_weaknames) }
+	.debug_funcnames 0 : { *(.debug_funcnames) }
+	.debug_typenames 0 : { *(.debug_typenames) }
+	.debug_varnames	 0 : { *(.debug_varnames) }
+}

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 */