2007-12-15 Bean <bean123ch@gmail.com>
* conf/i386-pc.rmk (pkgdata_IMAGES): Add lnxboot.img. (lnxboot_img_SOURCES): New variable. (lnxboot_img_ASFLAGS): Likewise. (lnxboot_img_LDFLAGS): Likewise. * boot/i386/pc/lnxboot.S: New file.
This commit is contained in:
robertmh
parent
2361c57885
commit
84be7599f6
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@ -1,3 +1,12 @@
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2007-12-15 Bean <bean123ch@gmail.com>
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* conf/i386-pc.rmk (pkgdata_IMAGES): Add lnxboot.img.
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(lnxboot_img_SOURCES): New variable.
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(lnxboot_img_ASFLAGS): Likewise.
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(lnxboot_img_LDFLAGS): Likewise.
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* boot/i386/pc/lnxboot.S: New file.
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2007-11-24 Pavel Roskin <proski@gnu.org>
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* configure.ac: Test if '--build-id=none' is supported by the
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@ -0,0 +1,292 @@
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/* -*-Asm-*- */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 1999,2000,2001,2002,2005,2006,2007 Free Software Foundation, Inc.
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*
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* GRUB is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* GRUB is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <grub/boot.h>
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#include <grub/machine/boot.h>
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#include <grub/machine/kernel.h>
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.file "lnxboot.S"
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#define CODE_ADDR 0x6000
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#define CODE_LENG (code_end - start)
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#define DATA_ADDR ((GRUB_BOOT_MACHINE_KERNEL_ADDR) + 0x200)
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#define BLCK_LENG 0x4000
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.text
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.code16
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.globl start, _start
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data_start:
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pushw %cs
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popw %ds
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xorl %eax, %eax
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xorl %ebx, %ebx
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call data_next
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data_next:
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popw %bx
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movw %cs, %ax
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shll $4, %eax
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leal 0x200 + data_start - data_next(%ebx,%eax), %eax
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movzbl setup_sects - data_next(%bx), %ecx
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shll $9, %ecx
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addl %ecx, %eax
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movl %eax, code32_start - data_next(%bx)
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jmp linux_next
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. = data_start + 0x1F1
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setup_sects:
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.byte (CODE_LENG >> 9)
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root_flags:
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.word 0
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syssize:
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.word 0
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swap_dev:
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.word 0
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ram_size:
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.word 0
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vid_mode:
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.word 0
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root_dev:
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.word 0
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boot_flag:
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.word 0xAA55
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start:
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_start:
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jmp linux_code
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.ascii "HdrS" // Header signature
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.word 0x0203 // Header version number
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realmode_swtch:
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.word 0, 0 // default_switch, SETUPSEG
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start_sys_seg:
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.word 0x1000 // obsolete
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version_ptr:
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.word 0 // version string ptr
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type_of_loader:
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.byte 0 // Filled in by boot loader
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loadflags:
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.byte 1 // Please load high
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setup_move_size:
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.word 0 // Unused
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code32_start:
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.long 0x100000 // 32-bit start address
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ramdisk_image:
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.long 0 // Loaded ramdisk image address
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ramdisk_size:
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.long 0 // Size of loaded ramdisk
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bootsect_kludge:
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.word 0, 0
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heap_end_ptr:
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.word 0
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pad1:
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.word 0
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cmd_line_ptr:
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.long 0 // Command line
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ramdisk_max:
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.long 0xffffffff // Highest allowed ramdisk address
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gdt:
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.long 0, 0, 0, 0 // Must be zero
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.word 0xffff // 64 K segment size
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gdt_src1:
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.byte 0, 0 ,0 // Low 24 bits of source addy
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.byte 0x93 // Access rights
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.byte 0 // Extended access rights
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gdt_src2:
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.byte 0 // High 8 bits of source addy
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.word 0xffff // 64 K segment size
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gdt_dst1:
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.byte 0, 0, 0 // Low 24 bits of target addy
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.byte 0x93 // Access rights
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.byte 0 // Extended access rights
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gdt_dst2:
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.byte 0 // High 8 bits of source addy
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.long 0, 0, 0, 0 // More space for the BIOS
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reg_edx:
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.byte 0x80,0,0xFF,0xFF
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data_leng:
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.long 0
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linux_code:
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movw %cs:(reg_edx - start), %dx
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linux_next:
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call normalize
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normalize:
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popw %bx
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subw $(normalize - start), %bx
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shrw $4, %bx
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movw %cs, %ax
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addw %bx, %ax
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pushw %ax
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pushw $(real_code - start)
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lret // jump to real_code
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real_code:
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subw $0x20, %ax
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movw %ax, %ds
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movw (setup_sects - data_start), %cx
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shlw $7, %cx
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// Setup stack
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xorw %si, %si
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movw %si, %ss
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movw $(CODE_ADDR), %sp
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pushl %esi
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pushl %edi
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// Move itself to 0:CODE_ADDR
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cld
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movw %cs, %ax
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movw %ax, %ds
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movw $(CODE_ADDR >> 4), %ax
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movw %ax, %es
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movw %si, %di
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rep
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movsl
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ljmp $(CODE_ADDR >> 4), $(real_code_2 - start)
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real_code_2:
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pushw %es
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popw %ds
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movl (ramdisk_image - start), %esi
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or %esi, %esi
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jnz 1f
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movl (code32_start - start), %esi
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1:
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movl $0x200, %ecx
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addl %ecx, %esi
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movl $DATA_ADDR, %edi
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call move_memory
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movsbl %dh, %eax
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movl %eax, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_INSTALL_DOS_PART)
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movsbl (reg_edx + 2 - start), %eax
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movl %eax, %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_INSTALL_BSD_PART)
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movl %ss:(DATA_ADDR + GRUB_KERNEL_MACHINE_COMPRESSED_SIZE), %ecx
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addl $(GRUB_KERNEL_MACHINE_RAW_SIZE - 0x200), %ecx
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call move_memory
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popl %edi
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popl %esi
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ljmp $(DATA_ADDR >> 4), $0
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// Parameters:
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// esi: source address
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// edi: target address
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// ecx: number of bytes
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move_memory:
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incl %ecx
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andb $0xFE, %cl
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pushw %dx
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1:
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pushl %esi
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pushl %edi
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pushl %ecx
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cmpl $BLCK_LENG, %ecx
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jbe 2f
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movl $BLCK_LENG, %ecx
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2:
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pushl %ecx
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movl %esi, %eax
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movw %si, (gdt_src1 - start)
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shrl $16, %eax
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movb %al, (gdt_src1 + 2 - start)
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movb %ah, (gdt_src2 - start)
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movl %edi, %eax
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movw %di, (gdt_dst1 - start)
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shrl $16, %eax
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movb %al, (gdt_dst1 + 2 - start)
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movb %ah, (gdt_dst2 - start)
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movw $(gdt - start), %si
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movb $0x87, %ah
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shrw $1, %cx
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int $0x15
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popl %eax
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popl %ecx
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popl %edi
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popl %esi
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jnc 2f
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movw $(err_int15_msg - start), %si
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jmp fail
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2:
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leal (%esi, %eax), %esi
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leal (%edi, %eax), %edi
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subl %eax, %ecx
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jnz 1b
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popw %dx
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ret
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// Parameters:
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// si: message
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fail:
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movb $0x0e, %ah
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xorw %bx, %bx
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1:
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lodsb (%si), %al
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int $0x10
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cmpb $0, %al
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jne 1b
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1: jmp 1b
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err_int15_msg:
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.ascii "move memory fails\0"
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. = (. & (~0x1FF)) + 0x1FF
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.byte 0
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code_end:
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@ -5,7 +5,7 @@ COMMON_CFLAGS = -fno-builtin -mrtd -mregparm=3 -m32
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COMMON_LDFLAGS = -m32 -nostdlib
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# Images.
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pkgdata_IMAGES = boot.img diskboot.img kernel.img pxeboot.img
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pkgdata_IMAGES = boot.img diskboot.img kernel.img pxeboot.img lnxboot.img
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# For boot.img.
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boot_img_SOURCES = boot/i386/pc/boot.S
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@ -61,6 +61,24 @@ diskboot_img-boot_i386_pc_diskboot.o: boot/i386/pc/diskboot.S
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diskboot_img_ASFLAGS = $(COMMON_ASFLAGS)
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diskboot_img_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-Ttext,8000
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# For lnxboot.img.
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lnxboot_img_SOURCES = boot/i386/pc/lnxboot.S
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CLEANFILES += lnxboot.img lnxboot.exec lnxboot_img-boot_i386_pc_lnxboot.o
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MOSTLYCLEANFILES += lnxboot_img-boot_i386_pc_lnxboot.d
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lnxboot.img: lnxboot.exec
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$(OBJCOPY) -O binary -R .note -R .comment $< $@
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lnxboot.exec: lnxboot_img-boot_i386_pc_lnxboot.o
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$(TARGET_CC) -o $@ $^ $(TARGET_LDFLAGS) $(lnxboot_img_LDFLAGS)
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lnxboot_img-boot_i386_pc_lnxboot.o: boot/i386/pc/lnxboot.S
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$(TARGET_CC) -Iboot/i386/pc -I$(srcdir)/boot/i386/pc $(TARGET_CPPFLAGS) -DASM_FILE=1 $(TARGET_ASFLAGS) $(lnxboot_img_ASFLAGS) -MD -c -o $@ $<
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-include lnxboot_img-boot_i386_pc_lnxboot.d
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lnxboot_img_ASFLAGS = $(COMMON_ASFLAGS)
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lnxboot_img_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-Ttext,6000
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# For kernel.img.
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kernel_img_SOURCES = kern/i386/pc/startup.S kern/main.c kern/device.c \
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kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
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@ -5,7 +5,7 @@ COMMON_CFLAGS = -fno-builtin -mrtd -mregparm=3 -m32
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COMMON_LDFLAGS = -m32 -nostdlib
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# Images.
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pkgdata_IMAGES = boot.img diskboot.img kernel.img pxeboot.img
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pkgdata_IMAGES = boot.img diskboot.img kernel.img pxeboot.img lnxboot.img
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# For boot.img.
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boot_img_SOURCES = boot/i386/pc/boot.S
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@ -22,6 +22,11 @@ diskboot_img_SOURCES = boot/i386/pc/diskboot.S
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diskboot_img_ASFLAGS = $(COMMON_ASFLAGS)
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diskboot_img_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-Ttext,8000
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# For lnxboot.img.
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lnxboot_img_SOURCES = boot/i386/pc/lnxboot.S
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lnxboot_img_ASFLAGS = $(COMMON_ASFLAGS)
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lnxboot_img_LDFLAGS = $(COMMON_LDFLAGS) -Wl,-N,-Ttext,6000
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# For kernel.img.
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kernel_img_SOURCES = kern/i386/pc/startup.S kern/main.c kern/device.c \
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kern/disk.c kern/dl.c kern/file.c kern/fs.c kern/err.c \
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