mirror of
https://github.com/fail0verflow/switch-coreboot.git
synced 2025-05-04 01:39:18 -04:00
Now the 'base file' works for both the makefile and ldscript.
This commit is contained in:
Ronald G. Minnich
parent
980dff7eff
commit
179c2c738d
1 changed files with 29 additions and 122 deletions
|
|
@ -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
|
||||
# ---------------------------------------------------------------------
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue