diff options
Diffstat (limited to 'src/arch')
| -rw-r--r-- | src/arch/x86/init/entry.S | 149 | ||||
| -rw-r--r-- | src/arch/x86/init/ldscript.ld | 40 |
2 files changed, 0 insertions, 189 deletions
diff --git a/src/arch/x86/init/entry.S b/src/arch/x86/init/entry.S deleted file mode 100644 index af29296403..0000000000 --- a/src/arch/x86/init/entry.S +++ /dev/null @@ -1,149 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 1999 Ronald G. Minnich - * - * 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; version 2 of the License. - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ -#include <arch/rom_segs.h> - .code16 - .globl _stage0 -_stage0: - cli - - /* Save the BIST result. */ - movl %eax, %ebp; - - /* thanks to kmliu@sis.com.tw for this TLB fix */ - /* IMMEDIATELY invalidate the translation lookaside buffer (TLB) before - * executing any further code. Even though paging is disabled we - * could still get false address translations due to the TLB if we - * didn't invalidate it. - */ - xorl %eax, %eax - movl %eax, %cr3 /* Invalidate TLB. */ - - /* Switch to protected mode. */ - - /* NOTE: With GNU assembler version 2.15.94.0.2.2 (i386-redhat-linux) - * using BFD version 2.15.94.0.2.2 20041220 this works fine without all - * the ld hackery and other things. So leave it as is with this comment. - */ - - data32 lgdt %cs:gdtptr - - movl %cr0, %eax - andl $0x7FFAFFD1, %eax /* PG, AM, WP, NE, TS, EM, MP = 0 */ - orl $0x60000001, %eax /* CD, NW, PE = 1 */ - movl %eax, %cr0 - - /* Restore BIST result. */ - movl %ebp, %eax - - // port80_post(0x23) - /* Now we are in protected mode. Jump to a 32 bit code segment. */ - data32 ljmp $ROM_CODE_SEG, $protected_stage0 - - /* I am leaving this weird jump in here in the event that future gas - * bugs force it to be used. - */ - /* .byte 0x66 */ - .code32 - /* ljmp $ROM_CODE_SEG, $protected_stage0 */ - - /* .code16 */ - .align 4 - .globl gdt16 -gdt16 = . - _stage0 -gdt16x: - .word gdt16xend - gdt16x -1 /* Compute the table limit. */ - .long gdt16x - .word 0 - - /* selgdt 0x08, flat code segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x9b, 0xcf, 0x00 - - /* selgdt 0x10, flat data segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x93, 0xcf, 0x00 -gdt16xend: - - /* From now on we are 32 bit. */ - .code32 - - /* We have two gdts where we could have one. That is ok. - * - * Let's not worry about this -- optimizing gdt is pointless since - * we're only in it for a little bit. - * - * Btw. note the trick below: The GDT points to ITSELF, and the first - * good descriptor is at offset 8. So you word-align the table, and - * then because you chose 8, you get a nice 64-bit aligned GDT entry, - * which is good as this is the size of the entry. - * Just in case you ever wonder why people do this. - */ - .align 4 - .globl gdtptr - .globl gdt_limit -gdt_limit = gdt_end - gdt - 1 /* Compute the table limit. */ - -gdt: -gdtptr: - .word gdt_end - gdt -1 /* Compute the table limit. */ - .long gdt /* We know the offset. */ - .word 0 - - /* selgdt 0x08, flat code segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x9b, 0xcf, 0x00 - - /* selgdt 0x10, flat data segment */ - .word 0xffff, 0x0000 - .byte 0x00, 0x93, 0xcf, 0x00 - -gdt_end: - -/* Reset vector. */ - -/* - * RVECTOR: Size of reset vector, default is 0x10. - * RESRVED: Size of vpd code, default is 0xf0. - * BOOTBLK: Size of bootblock code, default is 0x1f00 (8k-256b). - */ - -SEGMENT_SIZE = 0x10000 -RVECTOR = 0x00010 - -/* Due to YET ANOTHER BUG in GNU bintools, you can NOT have a code16 here. - * I think we should leave it this way forever, as the bugs come and - * go -- and come again. - * - * .code16 - * .section ".rom.text" - */ -.section ".reset", "ax" - .globl _resetjump -_resetjump: - /* GNU bintools bugs again. This jumps to stage0 - 2. Sigh. */ - /* jmp _stage0 */ - .byte 0xe9 - .int _stage0 - ( . + 2 ) - - /* Note: The above jump is hand coded to work around bugs in binutils. - * 5 bytes are used for a 3 byte instruction. This works because x86 - * is little endian and allows us to use supported 32 bit relocations - * instead of the weird 16 bit relocations that binutils does not - * handle consistenly between versions because they are used so rarely. - */ diff --git a/src/arch/x86/init/ldscript.ld b/src/arch/x86/init/ldscript.ld deleted file mode 100644 index 149f048638..0000000000 --- a/src/arch/x86/init/ldscript.ld +++ /dev/null @@ -1,40 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2007 Ronald G. Minnich <rminnich@gmail.com> - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -TARGET(binary) -SECTIONS -{ - /DISCARD/ : { - *(.comment) - *(.note.*) - *(.note) - } -} - -SECTIONS { - _ROMTOP = 0xfffffff0; - . = _ROMTOP; - .resetvector . : { - *(.reset) - . = 15 ; - BYTE(0x00); - } -} - |