diff options
Diffstat (limited to 'arch/x86/lib/linux_start.S')
-rw-r--r-- | arch/x86/lib/linux_start.S | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/arch/x86/lib/linux_start.S b/arch/x86/lib/linux_start.S deleted file mode 100644 index 07be37fed4..0000000000 --- a/arch/x86/lib/linux_start.S +++ /dev/null @@ -1,55 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-or-later */ -/* SPDX-FileCopyrightText: 2009 Juergen Beisert, Pengutronix */ -/* SPDX-FileCopyrightText: 1999-2008 Free Software Foundation, Inc. */ - -/* Mostly stolen from the GRUB2 project */ - -/** - * @file - * @brief Start the Linux real mode setup code - * - * Note: These functions are running in flat and real mode. Due to some - * other restrictions these routines must running from an address - * space below 0x10000 - */ - -/* - * void bios_start_linux(unsigned segment) - * - */ - - .section .boot.text.bios_start_linux, "ax" - .code32 - .globl bios_start_linux - .type bios_start_linux, @function - - .extern prot_to_real - -bios_start_linux: - /* 'prot_to_real' eats our eax content */ - movl %eax, %ebx - addl $0x20, %eax - movw %ax, setup_seg - - call prot_to_real - - .code16 - - cli - /* all segment registers are using the same segment */ - movw %bx, %ss - movw %bx, %ds - movw %bx, %es - movw %bx, %fs - movw %bx, %gs - - /* stack for the setup code (end of heap) */ - movw $0x9000, %sp - - /* do an 'ljmp' and never return */ - .byte 0xea - .word 0 -setup_seg: - .word 0 - - .code32 |