diff options
Diffstat (limited to 'cpu/i386/start.S')
| -rw-r--r-- | cpu/i386/start.S | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/cpu/i386/start.S b/cpu/i386/start.S deleted file mode 100644 index 25d32e658e..0000000000 --- a/cpu/i386/start.S +++ /dev/null @@ -1,135 +0,0 @@ -/* - * U-boot - i386 Startup Code - * - * Copyright (c) 2002 Omicron Ceti AB, Daniel Engström <denaiel@omicron.se> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * 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., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - - -#include <config.h> -#include <version.h> - - -.section .text -.code32 -.globl _start -.type _start, @function -.globl _i386boot_start -_i386boot_start: -_start: - movl $0x18,%eax /* Load our segement registes, the - * gdt have already been loaded by start16.S */ - movw %ax,%fs - movw %ax,%ds - movw %ax,%gs - movw %ax,%es - movw %ax,%ss - - /* We call a few functions in the board support package - * since we have no stack yet we'll have to use %ebp - * to store the return address */ - - /* Early platform init (setup gpio, etc ) */ - mov $early_board_init_ret, %ebp - jmp early_board_init -early_board_init_ret: - - /* The __port80 entry-point should be usabe by now */ - /* so we try to indicate progress */ - movw $0x01, %ax - movl $.progress0, %ebp - jmp show_boot_progress_asm -.progress0: - - /* size memory */ - mov $mem_init_ret, %ebp - jmp mem_init -mem_init_ret: - - /* Check we have enough memory for stack */ - movl $CONFIG_SYS_STACK_SIZE, %ecx - cmpl %ecx, %eax - jae mem_ok - - /* indicate (lack of) progress */ - movw $0x81, %ax - movl $.progress0a, %ebp - jmp show_boot_progress_asm -.progress0a: - jmp die -mem_ok: - /* Set stack pointer to upper memory limit*/ - movl %eax, %esp - - /* indicate progress */ - movw $0x02, %ax - movl $.progress1, %ebp - jmp show_boot_progress_asm -.progress1: - - /* Test the stack */ - pushl $0 - popl %eax - cmpl $0, %eax - jne no_stack - push $0x55aa55aa - popl %ebx - cmpl $0x55aa55aa, %ebx - je stack_ok - -no_stack: - /* indicate (lack of) progress */ - movw $0x82, %ax - movl $.progress1a, %ebp - jmp show_boot_progress_asm -.progress1a: - jmp die - - -stack_ok: - /* indicate progress */ - movw $0x03, %ax - movl $.progress2, %ebp - jmp show_boot_progress_asm -.progress2: - - wbinvd - - /* Get upper memory limit */ - movl %esp, %ecx - subl $CONFIG_SYS_STACK_SIZE, %ecx - - /* Create a Stack Frame */ - pushl %ebp - movl %esp, %ebp - - /* stack_limit parameter */ - pushl %ecx - call board_init_f /* Enter, U-boot! */ - - /* indicate (lack of) progress */ - movw $0x85, %ax - movl $.progress4a, %ebp - jmp show_boot_progress_asm -.progress4a: - -die: hlt - jmp die - hlt |
