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-rw-r--r--cpu/i386/start.S135
1 files changed, 0 insertions, 135 deletions
diff --git a/cpu/i386/start.S b/cpu/i386/start.S
deleted file mode 100644
index 25d32e6..0000000
--- 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