From 179c2c738d37a588676b8c86f5712a06419df7a3 Mon Sep 17 00:00:00 2001
From: "Ronald G. Minnich" <rminnich@gmail.com>
Date: Fri, 15 Dec 2000 04:31:24 +0000
Subject: [PATCH] Now the 'base file'  works for both the makefile and
 ldscript.

---
 util/config/NLBConfig.py | 151 ++++++++-------------------------------
 1 file changed, 29 insertions(+), 122 deletions(-)

diff --git a/util/config/NLBConfig.py b/util/config/NLBConfig.py
index 1792c537e1..dbe78ff6f6 100644
--- a/util/config/NLBConfig.py
+++ b/util/config/NLBConfig.py
@@ -13,124 +13,12 @@ makeoptions = {};
 makebaserules = {};
 treetop = '';
 outputdir = '';
-# we're trying to generate the ldscript and see how it works out. 
-# I think this is a good idea; we'll see. 
-ldscript = [
-	'/*',
-	' * Bootstrap code for the STPC Consumer',
-	' * Copyright (c) 1999 by Net Insight AB. All Rights Reserved.',
-	' *',
-	' * $Id$',
-	' *',
-	' */',
-	'/* oh, barf. This wont work if all you use is .o\'s.  -- RGM */',
-	'',
-	'/*',
-	' *	Written by Johan Rydberg, based on work by Daniel Kahlin.',
-	' */',
-	'/*',
-	' *	We use ELF as output format. So that we can',
-	' *	debug the code in some form. ',
-	' */',
-	'OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")',
-	'OUTPUT_ARCH(i386)',
-	'',
-	'/*',
-	' *	Memory map:',
-	' *',
-	' *	0x00000	(4*4096 bytes)	: stack',
-	' *	0x04000	(4096 bytes)	: private data ',
-	' *	0x05000			: data space',
-	' *	0x90000			: kernel stack',
-	' *	0xf0000	(64 Kbyte)	: EPROM',
-	' */',
-	'MEMORY',
-	'{',
-	'	ram (rwx) : ORIGIN = 0x00000000, LENGTH = 128M	/* 128 MB memory is max for STPC */',
-	'	rom (rx)  : ORIGIN = 0x000f0000, LENGTH = 128K	/* 128 K EPROM */',
-	'}',
-	'',
-	'_PDATABASE	= 0x04000;',
-	'_RAMBASE	= 0x05000;',
-	'_KERNSTK	= 0x90000;',
-	'',
-	'/* should be parameterized but is not, yuck! */',
-	'_ROMBASE	= 0x80000;',
-	'',
-	'/*',
-	' *	Entry point is not really nececary, since the mkrom(8)',
-	' *	tool creates a entry point that jumps to $0xc000:0x0000.',
-	' */',
-	'/* baloney, but ... RGM*/',
-	'ENTRY(_start)',
-	'',
-	'SECTIONS',
-	'{',
-	'	/*',
-	'	 * First we place the code and read only data (typically const declared).',
-	'	 * This get placed in rom.',
-	'	 */',
-	'	.text _ROMBASE : {',
-	'		_text = .;',
-	'		*(.text);',
-	'		*(.rodata);',
-	'		_etext = .;',
-	'	}',
-	'',
-	'	_pdata = .;',
-	'',
-	'/*',
-	'	.pdata _PDATABASE : AT ( LOADADDR(.text) + SIZEOF(.text) +  ',
-	'					SIZEOF(.rodata)) {',
-	' */',
-	'	.pdata _PDATABASE : AT ( _etext ) {',
-	'		*(.pdata);',
-	'	}',
-	'',
-	'	_epdata = LOADADDR(.pdata) + SIZEOF(.pdata);',
-	'',
-	'	/*',
-	'	 * After the code we place initialized data (typically initialized',
-	'	 * global variables). This gets copied into ram by startup code.',
-	'	 * __data_start and __data_end shows where in ram this should be placed,',
-	'	 * whereas __data_loadstart and __data_loadend shows where in rom to',
-	'	 * copy from.',
-	'	 */',
-	'	.data _RAMBASE : AT ( LOADADDR(.pdata) + SIZEOF(.pdata) ) {',
-	'		_data = .;',
-	'		*(.data)',
-	'		*(.sdata)',
-	'		*(.sdata2)',
-	'		*(.got)',
-	'		_edata = .;',
-	'	}',
-	'    ',
-	'	_ldata	= LOADADDR(.data);',
-	'	_eldata	= LOADADDR(.data) + SIZEOF(.data);',
-	' 	',
-	'	/*',
-	'	 * bss does not contain data, it is just a space that should be zero',
-	'	 * initialized on startup. (typically uninitialized global variables)',
-	'	 * crt0.S fills between __bss_start and __bss_end with zeroes.',
-	'	 */',
-	'	.bss ( ADDR(.data) + SIZEOF(.data) ) : {',
-	'		_bss = .;',
-	'		*(.bss)',
-	'		*(.sbss)',
-	'		*(COMMON)',
-	'		_ebss = .;',
-	'		_heap = .;',
-	'	}',
-	'}',
-	'',
-	'/*',
-	' *	This provides the start and end address for the whole image ',
-	' */',
-	'_image	= LOADADDR(.text);',
-	'_eimage	= LOADADDR(.data) + SIZEOF(.data);',
-	'',
-	'/* EOF */',
-	]
+
+# config variables for the ldscript
+data = 0x4000;
+bss = 0x5000;
+stack = 0x90000;
+linuxbiosbase = 0xf0000;
 
 p5crt0preram = [
 	'/*',
@@ -437,6 +325,15 @@ def linux(dir, linux_name):
 	linuxrule = 'LINUX=' + linux_name
 	makedefine(dir, linuxrule)
 
+def setdata(dir, address):
+	data = address
+def setbss(dir, address):
+	bss = address
+def setstack(dir, address):
+	stack = address
+def setlinuxbiosbase(dir, address):
+	linuxbiosbase = address
+
 list_vals = {
 #	'option': []
 	}
@@ -477,6 +374,10 @@ command_actions = {
 	'addaction'    : addaction,
 	'option'    : option,
 	'nooption'    : nooption,
+	'data'	: setdata,
+	'bss'	: setbss,
+	'stack' : setstack,
+	'biosbase' : setlinuxbiosbase,
 	'commandline' : commandline
 	}
 
@@ -563,9 +464,16 @@ def writeldscript(path):
 #	try: 
 	file = open(ldfilepath, 'w+')
 	# print out the ldscript rules
-	
-	for i in range(len(ldscript)):
-		file.write("%s\n" % ldscript[i])
+	# print out the values of defined variables
+	file.write('_PDATABASE	= 0x%x;\n' % data)
+	file.write('_RAMBASE	= 0x%x;\n' % bss)
+	file.write('_KERNSTK	= 0x%x;\n' % stack)
+	file.write('_ROMBASE	= 0x%x;\n' % linuxbiosbase)
+
+	ldlines = readfile(ldscriptbase)
+	print "LDLINES ",ldlines
+        for line in ldlines:
+		file.write(line)
 	file.close();
 
 
@@ -627,7 +535,6 @@ def writemakefile(path):
 #	except IOError:
 #		print "File open and write failed for ", makefilepath
 
-
 # ---------------------------------------------------------------------
 #                        MAIN
 # ---------------------------------------------------------------------