diff options
Diffstat (limited to 'src/arch/i386/boot/gdt.c')
| -rw-r--r-- | src/arch/i386/boot/gdt.c | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/src/arch/i386/boot/gdt.c b/src/arch/i386/boot/gdt.c deleted file mode 100644 index b425ade59d..0000000000 --- a/src/arch/i386/boot/gdt.c +++ /dev/null @@ -1,60 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright (C) 2008-2009 coresystems GmbH - * - * 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 <types.h> -#include <string.h> -#include <cbmem.h> -#include <lib.h> -#include <console/console.h> - -// Global Descriptor Table, defined in c_start.S -extern char gdt; -extern char gdt_end; - -/* i386 lgdt argument */ -struct gdtarg { - u16 limit; - u32 base; -} __attribute__((packed)); - -// Copy GDT to new location and reload it -void move_gdt(void) -{ - void *newgdt; - u16 num_gdt_bytes = &gdt_end - &gdt; - struct gdtarg gdtarg; - - newgdt = cbmem_find(CBMEM_ID_GDT); - if (!newgdt) { - newgdt = cbmem_add(CBMEM_ID_GDT, ALIGN(num_gdt_bytes, 512)); - if (!newgdt) { - printk(BIOS_ERR, "Error: Could not relocate GDT.\n"); - return; - } - printk(BIOS_DEBUG, "Moving GDT to %p...", newgdt); - memcpy((void*)newgdt, &gdt, num_gdt_bytes); - } - - gdtarg.base = (u32)newgdt; - gdtarg.limit = num_gdt_bytes - 1; - - __asm__ __volatile__ ("lgdt %0\n\t" : : "m" (gdtarg)); - printk(BIOS_DEBUG, "ok\n"); -} - |