move arch/<arch>/config to arch/<arch>/init
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1571 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer
parent
e891783e5f
commit
38ffff0d72
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@ -1,7 +1,7 @@
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uses CONFIG_SMP
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init config/crt0.base
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ldscript config/ldscript.lb
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init init/crt0.S.lb
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ldscript init/ldscript.lb
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makerule all
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depends "linuxbios.rom"
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@ -0,0 +1,165 @@
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/* -*- asm -*-
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* $ $
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*
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*/
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/*
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* Copyright (C) 1996-2002 Markus Franz Xaver Johannes Oberhumer
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*
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* This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* Originally this code was part of ucl the data compression library
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* for upx the ``Ultimate Packer of eXecutables''.
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*
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* - Converted to gas assembly, and refitted to work with etherboot.
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* Eric Biederman 20 Aug 2002
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* - Merged the nrv2b decompressor into crt0.base of LinuxBIOS
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* Eric Biederman 26 Sept 2002
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*/
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#include <arch/asm.h>
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#include <arch/intel.h>
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#if CONFIG_SMP==1
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#include <cpu/p6/apic.h>
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#endif
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/*
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* This is the entry code the code in .reset section
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* jumps to this address.
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*
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*/
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.section ".rom.data", "a", @progbits
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.section ".rom.text", "ax", @progbits
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intel_chip_post_macro(0x01) /* delay for chipsets */
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#include "crt0_includes.h"
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/* clear boot_complete flag */
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xorl %ebp, %ebp
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__main:
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CONSOLE_DEBUG_TX_STRING($str_copying_to_ram)
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/*
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* Copy data into RAM and clear the BSS. Since these segments
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* isn\'t really that big we just copy/clear using bytes, not
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* double words.
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*/
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intel_chip_post_macro(0x11) /* post 11 */
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cld /* clear direction flag */
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/* copy linuxBIOS from it's initial load location to
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* the location it is compiled to run at.
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* Normally this is copying from FLASH ROM to RAM.
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*/
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#if !CONFIG_COMPRESS
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movl $_liseg, %esi
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movl $_iseg, %edi
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movl $_eiseg, %ecx
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subl %edi, %ecx
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rep movsb
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#else
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leal 4+_liseg, %esi
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leal _iseg, %edi
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movl %ebp, %esp /* preserve %ebp */
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movl $-1, %ebp /* last_m_off = -1 */
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jmp dcl1_n2b
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/* ------------- DECOMPRESSION -------------
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Input:
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%esi - source
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%edi - dest
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%ebp - -1
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cld
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Output:
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%eax - 0
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%ecx - 0
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*/
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.macro getbit bits
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.if \bits == 1
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addl %ebx, %ebx
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jnz 1f
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.endif
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movl (%esi), %ebx
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subl $-4, %esi /* sets carry flag */
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adcl %ebx, %ebx
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1:
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.endm
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decompr_literals_n2b:
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movsb
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decompr_loop_n2b:
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addl %ebx, %ebx
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jnz dcl2_n2b
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dcl1_n2b:
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getbit 32
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dcl2_n2b:
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jc decompr_literals_n2b
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xorl %eax, %eax
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incl %eax /* m_off = 1 */
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loop1_n2b:
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getbit 1
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adcl %eax, %eax /* m_off = m_off*2 + getbit() */
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getbit 1
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jnc loop1_n2b /* while(!getbit()) */
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xorl %ecx, %ecx
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subl $3, %eax
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jb decompr_ebpeax_n2b /* if (m_off == 2) goto decompr_ebpeax_n2b ? */
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shll $8, %eax
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movb (%esi), %al /* m_off = (m_off - 3)*256 + src[ilen++] */
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incl %esi
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xorl $-1, %eax
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jz decompr_end_n2b /* if (m_off == 0xffffffff) goto decomp_end_n2b */
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movl %eax, %ebp /* last_m_off = m_off ?*/
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decompr_ebpeax_n2b:
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getbit 1
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adcl %ecx, %ecx /* m_len = getbit() */
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getbit 1
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adcl %ecx, %ecx /* m_len = m_len*2 + getbit()) */
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jnz decompr_got_mlen_n2b /* if (m_len == 0) goto decompr_got_mlen_n2b */
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incl %ecx /* m_len++ */
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loop2_n2b:
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getbit 1
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adcl %ecx, %ecx /* m_len = m_len*2 + getbit() */
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getbit 1
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jnc loop2_n2b /* while(!getbit()) */
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incl %ecx
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incl %ecx /* m_len += 2 */
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decompr_got_mlen_n2b:
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cmpl $-0xd00, %ebp
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adcl $1, %ecx /* m_len = m_len + 1 + (last_m_off > 0xd00) */
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movl %esi, %edx
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leal (%edi,%ebp), %esi /* m_pos = dst + olen + -m_off */
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rep
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movsb /* dst[olen++] = *m_pos++ while(m_len > 0) */
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movl %edx, %esi
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jmp decompr_loop_n2b
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decompr_end_n2b:
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intel_chip_post_macro(0x12) /* post 12 */
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movl %esp, %ebp
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#endif
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CONSOLE_DEBUG_TX_STRING($str_pre_main)
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leal _iseg, %edi
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jmp %edi
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.Lhlt:
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intel_chip_post_macro(0xee) /* post fe */
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hlt
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jmp .Lhlt
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.section ".rom.data"
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str_copying_to_ram: .string "Copying LinuxBIOS to ram.\r\n"
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str_pre_main: .string "Jumping to LinuxBIOS.\r\n"
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.previous
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@ -0,0 +1,62 @@
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/*
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* Memory map:
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*
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* _RAMBASE
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* : data segment
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* : bss segment
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* : heap
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* : stack
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* _ROMBASE
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* : linuxbios text
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* : readonly text
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*/
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/*
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* Bootstrap code for the STPC Consumer
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* Copyright (c) 1999 by Net Insight AB. All Rights Reserved.
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*
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*/
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/*
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* Written by Johan Rydberg, based on work by Daniel Kahlin.
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* Rewritten by Eric Biederman
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*/
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/*
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* We use ELF as output format. So that we can
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* debug the code in some form.
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*/
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OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
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OUTPUT_ARCH(i386)
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ENTRY(_start)
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TARGET(binary)
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INPUT(linuxbios_payload)
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SECTIONS
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{
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. = _ROMBASE;
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/* This section might be better named .setup */
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.rom . : {
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_rom = .;
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*(.rom.text);
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*(.rom.data);
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. = ALIGN(16);
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_erom = .;
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}
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_lrom = LOADADDR(.rom);
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_elrom = LOADADDR(.rom) + SIZEOF(.rom);
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.payload . : {
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_payload = . ;
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linuxbios_payload(*)
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_epayload = . ;
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}
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_iseg = _RAMBASE;
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_eiseg = _iseg + SIZEOF(.payload);
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_liseg = _payload;
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_eliseg = _epayload;
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/DISCARD/ : {
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*(.comment)
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*(.note)
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}
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}
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@ -1,4 +1,4 @@
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ldscript config/ldscript.lb
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ldscript init/ldscript.lb
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makerule linuxbios.rom
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depends "linuxbios"
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@ -0,0 +1,94 @@
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/*
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* Memory map:
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*
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* _ROMBASE : start of ROM
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* _RESET : reset vector (may be at top of ROM)
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* _EXCEPTIONS_VECTORS : exception table
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*
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* _ROMSTART : linuxbios text
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* : payload text
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*
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* _RAMBASE : address to copy payload
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*/
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/*
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* Written by Johan Rydberg, based on work by Daniel Kahlin.
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* Rewritten by Eric Biederman
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* Re-rewritten by Greg Watson for PPC
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*/
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/*
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* We use ELF as output format. So that we can
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* debug the code in some form.
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*/
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OUTPUT_FORMAT("elf32-powerpc")
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ENTRY(_start)
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TARGET(binary)
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INPUT(linuxbios_payload)
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SECTIONS
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{
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/*
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* Absolute location of base of ROM
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*/
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. = _ROMBASE;
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/*
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* Absolute location of reset vector. This may actually be at the
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* the top of ROM.
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*/
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. = _RESET;
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.reset . : {
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*(.rom.reset);
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. = ALIGN(16);
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}
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/*
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* Absolute location of exception vector table.
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*/
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. = _EXCEPTION_VECTORS;
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.exception_vectors . : {
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*(.rom.exception_vectors);
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. = ALIGN(16);
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}
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/*
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* Absolute location of LinuxBIOS initialization code in ROM.
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*/
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. = _ROMSTART;
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.rom . : {
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_rom = .;
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*(.rom.text);
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*(.text);
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*(.rom.data);
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*(.rodata);
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*(EXCLUDE_FILE(linuxbios_payload) .data);
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. = ALIGN(16);
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_erom = .;
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}
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_lrom = LOADADDR(.rom);
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_elrom = LOADADDR(.rom) + SIZEOF(.rom);
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/*
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* Payload is LinuxBIOS proper.
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*/
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.payload . : {
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_payload = . ;
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linuxbios_payload(*)
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_epayload = . ;
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}
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/*
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* Absolute location of where payload will be relocated in RAM.
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*/
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_iseg = _RAMBASE;
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_eiseg = _iseg + SIZEOF(.payload);
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_liseg = _payload;
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_eliseg = _epayload;
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/DISCARD/ : {
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*(.comment)
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*(.note)
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}
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}
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