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, 136 insertions, 0 deletions

diff --git a/board/altera/nios2-generic/u-boot.lds b/board/altera/nios2-generic/u-boot.lds
new file mode 100644
index 0000000..d4be077
--- /dev/null
+++ b/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) }
+}