Remove old i386 setup code
Changes
6 files changed · +0 −3545
| File | Status | Add | Del | Content |
|---|---|---|---|---|
| arch/i386/boot/bootsect.S | deleted | +0 | −98 | View before deletion |
| arch/i386/boot/edd.S | deleted | +0 | −231 | View before deletion |
| arch/i386/boot/setup.S | deleted | +0 | −1075 | View before deletion |
| arch/i386/boot/video.S | deleted | +0 | −2043 | View before deletion |
| arch/i386/kernel/verify_cpu.S | deleted | +0 | −94 | View before deletion |
| include/linux/edd.h | modified | +0 | −4 | View file |
Only the first 600 diff lines are shown. Download the complete patch.
arch/i386/boot/bootsect.S
View before deletiondiff --git a/arch/i386/boot/bootsect.S b/arch/i386/boot/bootsect.S
deleted file mode 100644
index 011b7a4..0000000
--- a/arch/i386/boot/bootsect.S
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * bootsect.S Copyright (C) 1991, 1992 Linus Torvalds
- *
- * modified by Drew Eckhardt
- * modified by Bruce Evans (bde)
- * modified by Chris Noe (May 1999) (as86 -> gas)
- * gutted by H. Peter Anvin (Jan 2003)
- *
- * BIG FAT NOTE: We're in real mode using 64k segments. Therefore segment
- * addresses must be multiplied by 16 to obtain their respective linear
- * addresses. To avoid confusion, linear addresses are written using leading
- * hex while segment addresses are written as segment:offset.
- *
- */
-
-#include <asm/boot.h>
-
-SETUPSECTS = 4 /* default nr of setup-sectors */
-BOOTSEG = 0x07C0 /* original address of boot-sector */
-INITSEG = DEF_INITSEG /* we move boot here - out of the way */
-SETUPSEG = DEF_SETUPSEG /* setup starts here */
-SYSSEG = DEF_SYSSEG /* system loaded at 0x10000 (65536) */
-SYSSIZE = DEF_SYSSIZE /* system size: # of 16-byte clicks */
- /* to be loaded */
-ROOT_DEV = 0 /* ROOT_DEV is now written by "build" */
-SWAP_DEV = 0 /* SWAP_DEV is now written by "build" */
-
-#ifndef SVGA_MODE
-#define SVGA_MODE ASK_VGA
-#endif
-
-#ifndef RAMDISK
-#define RAMDISK 0
-#endif
-
-#ifndef ROOT_RDONLY
-#define ROOT_RDONLY 1
-#endif
-
-.code16
-.text
-
-.global _start
-_start:
-
- # Normalize the start address
- jmpl $BOOTSEG, $start2
-
-start2:
- movw %cs, %ax
- movw %ax, %ds
- movw %ax, %es
- movw %ax, %ss
- movw $0x7c00, %sp
- sti
- cld
-
- movw $bugger_off_msg, %si
-
-msg_loop:
- lodsb
- andb %al, %al
- jz die
- movb $0xe, %ah
- movw $7, %bx
- int $0x10
- jmp msg_loop
-
-die:
- # Allow the user to press a key, then reboot
- xorw %ax, %ax
- int $0x16
- int $0x19
-
- # int 0x19 should never return. In case it does anyway,
- # invoke the BIOS reset code...
- ljmp $0xf000,$0xfff0
-
-
-bugger_off_msg:
- .ascii "Direct booting from floppy is no longer supported.\r\n"
- .ascii "Please use a boot loader program instead.\r\n"
- .ascii "\n"
- .ascii "Remove disk and press any key to reboot . . .\r\n"
- .byte 0
-
-
- # Kernel attributes; used by setup
-
- .org 497
-setup_sects: .byte SETUPSECTS
-root_flags: .word ROOT_RDONLY
-syssize: .word SYSSIZE
-swap_dev: .word SWAP_DEV
-ram_size: .word RAMDISK
-vid_mode: .word SVGA_MODE
-root_dev: .word ROOT_DEV
-boot_flag: .word 0xAA55
arch/i386/boot/edd.S
View before deletiondiff --git a/arch/i386/boot/edd.S b/arch/i386/boot/edd.S
deleted file mode 100644
index 3432136..0000000
--- a/arch/i386/boot/edd.S
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * BIOS Enhanced Disk Drive support
- * Copyright (C) 2002, 2003, 2004 Dell, Inc.
- * by Matt Domsch <[email protected]> October 2002
- * conformant to T13 Committee www.t13.org
- * projects 1572D, 1484D, 1386D, 1226DT
- * disk signature read by Matt Domsch <[email protected]>
- * and Andrew Wilks <[email protected]> September 2003, June 2004
- * legacy CHS retrieval by Patrick J. LoPresti <[email protected]>
- * March 2004
- * Command line option parsing, Matt Domsch, November 2004
- */
-
-#include <linux/edd.h>
-#include <asm/setup.h>
-
-#if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
-
-# It is assumed that %ds == INITSEG here
-
- movb $0, (EDD_MBR_SIG_NR_BUF)
- movb $0, (EDDNR)
-
-# Check the command line for options:
-# edd=of disables EDD completely (edd=off)
-# edd=sk skips the MBR test (edd=skipmbr)
-# edd=on re-enables EDD (edd=on)
-
- pushl %esi
- movw $edd_mbr_sig_start, %di # Default to edd=on
-
- movl %cs:(cmd_line_ptr), %esi
- andl %esi, %esi
- jz old_cl # Old boot protocol?
-
-# Convert to a real-mode pointer in fs:si
- movl %esi, %eax
- shrl $4, %eax
- movw %ax, %fs
- andw $0xf, %si
- jmp have_cl_pointer
-
-# Old-style boot protocol?
-old_cl:
- push %ds # aka INITSEG
- pop %fs
-
- cmpw $0xa33f, (0x20)
- jne done_cl # No command line at all?
- movw (0x22), %si # Pointer relative to INITSEG
-
-# fs:si has the pointer to the command line now
-have_cl_pointer:
-
-# Loop through kernel command line one byte at a time. Just in
-# case the loader is buggy and failed to null-terminate the command line
-# terminate if we get close enough to the end of the segment that we
-# cannot fit "edd=XX"...
-cl_atspace:
- cmpw $-5, %si # Watch for segment wraparound
- jae done_cl
- movl %fs:(%si), %eax
- andb %al, %al # End of line?
- jz done_cl
- cmpl $EDD_CL_EQUALS, %eax
- jz found_edd_equals
- cmpb $0x20, %al # <= space consider whitespace
- ja cl_skipword
- incw %si
- jmp cl_atspace
-
-cl_skipword:
- cmpw $-5, %si # Watch for segment wraparound
- jae done_cl
- movb %fs:(%si), %al # End of string?
- andb %al, %al
- jz done_cl
- cmpb $0x20, %al
- jbe cl_atspace
- incw %si
- jmp cl_skipword
-
-found_edd_equals:
-# only looking at first two characters after equals
-# late overrides early on the command line, so keep going after finding something
- movw %fs:4(%si), %ax
- cmpw $EDD_CL_OFF, %ax # edd=of
- je do_edd_off
- cmpw $EDD_CL_SKIP, %ax # edd=sk
- je do_edd_skipmbr
- cmpw $EDD_CL_ON, %ax # edd=on
- je do_edd_on
- jmp cl_skipword
-do_edd_skipmbr:
- movw $edd_start, %di
- jmp cl_skipword
-do_edd_off:
- movw $edd_done, %di
- jmp cl_skipword
-do_edd_on:
- movw $edd_mbr_sig_start, %di
- jmp cl_skipword
-
-done_cl:
- popl %esi
- jmpw *%di
-
-# Read the first sector of each BIOS disk device and store the 4-byte signature
-edd_mbr_sig_start:
- movb $0x80, %dl # from device 80
- movw $EDD_MBR_SIG_BUF, %bx # store buffer ptr in bx
-edd_mbr_sig_read:
- movl $0xFFFFFFFF, %eax
- movl %eax, (%bx) # assume failure
- pushw %bx
- movb $READ_SECTORS, %ah
- movb $1, %al # read 1 sector
- movb $0, %dh # at head 0
- movw $1, %cx # cylinder 0, sector 0
- pushw %es
- pushw %ds
- popw %es
- movw $EDDBUF, %bx # disk's data goes into EDDBUF
- pushw %dx # work around buggy BIOSes
- stc # work around buggy BIOSes
- int $0x13
- sti # work around buggy BIOSes
- popw %dx
- popw %es
- popw %bx
- jc edd_mbr_sig_done # on failure, we're done.
- cmpb $0, %ah # some BIOSes do not set CF
- jne edd_mbr_sig_done # on failure, we're done.
- movl (EDDBUF+EDD_MBR_SIG_OFFSET), %eax # read sig out of the MBR
- movl %eax, (%bx) # store success
- incb (EDD_MBR_SIG_NR_BUF) # note that we stored something
- incb %dl # increment to next device
- addw $4, %bx # increment sig buffer ptr
- cmpb $EDD_MBR_SIG_MAX, (EDD_MBR_SIG_NR_BUF) # Out of space?
- jb edd_mbr_sig_read # keep looping
-edd_mbr_sig_done:
-
-# Do the BIOS Enhanced Disk Drive calls
-# This consists of two calls:
-# int 13h ah=41h "Check Extensions Present"
-# int 13h ah=48h "Get Device Parameters"
-# int 13h ah=08h "Legacy Get Device Parameters"
-#
-# A buffer of size EDDMAXNR*(EDDEXTSIZE+EDDPARMSIZE) is reserved for our use
-# in the boot_params at EDDBUF. The first four bytes of which are
-# used to store the device number, interface support map and version
-# results from fn41. The next four bytes are used to store the legacy
-# cylinders, heads, and sectors from fn08. The following 74 bytes are used to
-# store the results from fn48. Starting from device 80h, fn41, then fn48
-# are called and their results stored in EDDBUF+n*(EDDEXTSIZE+EDDPARMIZE).
-# Then the pointer is incremented to store the data for the next call.
-# This repeats until either a device doesn't exist, or until EDDMAXNR
-# devices have been stored.
-# The one tricky part is that ds:si always points EDDEXTSIZE bytes into
-# the structure, and the fn41 and fn08 results are stored at offsets
-# from there. This removes the need to increment the pointer for
-# every store, and leaves it ready for the fn48 call.
-# A second one-byte buffer, EDDNR, in the boot_params stores
-# the number of BIOS devices which exist, up to EDDMAXNR.
-# In setup.c, copy_edd() stores both boot_params buffers away
-# for later use, as they would get overwritten otherwise.
-# This code is sensitive to the size of the structs in edd.h
-edd_start:
- # %ds points to the bootsector
- # result buffer for fn48
- movw $EDDBUF+EDDEXTSIZE, %si # in ds:si, fn41 results
- # kept just before that
- movb $0x80, %dl # BIOS device 0x80
-
-edd_check_ext:
- movb $CHECKEXTENSIONSPRESENT, %ah # Function 41
- movw $EDDMAGIC1, %bx # magic
- int $0x13 # make the call
- jc edd_done # no more BIOS devices
-
- cmpw $EDDMAGIC2, %bx # is magic right?
- jne edd_next # nope, next...
-
- movb %dl, %ds:-8(%si) # store device number
- movb %ah, %ds:-7(%si) # store version
- movw %cx, %ds:-6(%si) # store extensions
- incb (EDDNR) # note that we stored something
-
-edd_get_device_params:
- movw $EDDPARMSIZE, %ds:(%si) # put size
- movw $0x0, %ds:2(%si) # work around buggy BIOSes
- movb $GETDEVICEPARAMETERS, %ah # Function 48
- int $0x13 # make the call
- # Don't check for fail return
- # it doesn't matter.
-edd_get_legacy_chs:
- xorw %ax, %ax
- movw %ax, %ds:-4(%si)
- movw %ax, %ds:-2(%si)
- # Ralf Brown's Interrupt List says to set ES:DI to
- # 0000h:0000h "to guard against BIOS bugs"
- pushw %es
- movw %ax, %es
- movw %ax, %di
- pushw %dx # legacy call clobbers %dl
- movb $LEGACYGETDEVICEPARAMETERS, %ah # Function 08
- int $0x13 # make the call
- jc edd_legacy_done # failed
- movb %cl, %al # Low 6 bits are max
- andb $0x3F, %al # sector number
- movb %al, %ds:-1(%si) # Record max sect
- movb %dh, %ds:-2(%si) # Record max head number
- movb %ch, %al # Low 8 bits of max cyl
- shr $6, %cl
- movb %cl, %ah # High 2 bits of max cyl
- movw %ax, %ds:-4(%si)
-
-edd_legacy_done:
- popw %dx
- popw %es
- movw %si, %ax # increment si
- addw $EDDPARMSIZE+EDDEXTSIZE, %ax
- movw %ax, %si
-
-edd_next:
- incb %dl # increment to next device
- cmpb $EDDMAXNR, (EDDNR) # Out of space?
- jb edd_check_ext # keep looping
-
-edd_done:
-#endif
arch/i386/boot/setup.S
View before deletiondiff --git a/arch/i386/boot/setup.S b/arch/i386/boot/setup.S
deleted file mode 100644
index 6dbcc95..0000000
--- a/arch/i386/boot/setup.S
+++ /dev/null
@@ -1,1075 +0,0 @@
-/*
- * setup.S Copyright (C) 1991, 1992 Linus Torvalds
- *
- * setup.s is responsible for getting the system data from the BIOS,
- * and putting them into the appropriate places in system memory.
- * both setup.s and system has been loaded by the bootblock.
- *
- * This code asks the bios for memory/disk/other parameters, and
- * puts them in a "safe" place: 0x90000-0x901FF, ie where the
- * boot-block used to be. It is then up to the protected mode
- * system to read them from there before the area is overwritten
- * for buffer-blocks.
- *
- * Move PS/2 aux init code to psaux.c
- * ([email protected]) 03Oct92
- *
- * some changes and additional features by Christoph Niemann,
- * March 1993/June 1994 ([email protected])
- *
- * add APM BIOS checking by Stephen Rothwell, May 1994
- * ([email protected])
- *
- * High load stuff, initrd support and position independency
- * by Hans Lermen & Werner Almesberger, February 1996
- * <[email protected]>, <[email protected]>
- *
- * Video handling moved to video.S by Martin Mares, March 1996
- * <[email protected]>
- *
- * Extended memory detection scheme retwiddled by [email protected] (david
- * parsons) to avoid loadlin confusion, July 1997
- *
- * Transcribed from Intel (as86) -> AT&T (gas) by Chris Noe, May 1999.
- * <[email protected]>
- *
- * Fix to work around buggy BIOSes which don't use carry bit correctly
- * and/or report extended memory in CX/DX for e801h memory size detection
- * call. As a result the kernel got wrong figures. The int15/e801h docs
- * from Ralf Brown interrupt list seem to indicate AX/BX should be used
- * anyway. So to avoid breaking many machines (presumably there was a reason
- * to orginally use CX/DX instead of AX/BX), we do a kludge to see
- * if CX/DX have been changed in the e801 call and if so use AX/BX .
- * Michael Miller, April 2001 <[email protected]>
- *
- * New A20 code ported from SYSLINUX by H. Peter Anvin. AMD Elan bugfixes
- * by Robert Schwebel, December 2001 <[email protected]>
- */
-
-#include <asm/segment.h>
-#include <linux/utsrelease.h>
-#include <linux/compile.h>
-#include <asm/boot.h>
-#include <asm/e820.h>
-#include <asm/page.h>
-#include <asm/setup.h>
-
-/* Signature words to ensure LILO loaded us right */
-#define SIG1 0xAA55
-#define SIG2 0x5A5A
-
-INITSEG = DEF_INITSEG # 0x9000, we move boot here, out of the way
-SYSSEG = DEF_SYSSEG # 0x1000, system loaded at 0x10000 (65536).
-SETUPSEG = DEF_SETUPSEG # 0x9020, this is the current segment
- # ... and the former contents of CS
-
-DELTA_INITSEG = SETUPSEG - INITSEG # 0x0020
-
-.code16
-.globl begtext, begdata, begbss, endtext, enddata, endbss
-
-.text
-begtext:
-.data
-begdata:
-.bss
-begbss:
-.text
-
-start:
- jmp trampoline
-
-# This is the setup header, and it must start at %cs:2 (old 0x9020:2)
-
- .ascii "HdrS" # header signature
- .word 0x0206 # header version number (>= 0x0105)
- # or else old loadlin-1.5 will fail)
-realmode_swtch: .word 0, 0 # default_switch, SETUPSEG
-start_sys_seg: .word SYSSEG
- .word kernel_version # pointing to kernel version string
- # above section of header is compatible
- # with loadlin-1.5 (header v1.5). Don't
- # change it.
-
-type_of_loader: .byte 0 # = 0, old one (LILO, Loadlin,
- # Bootlin, SYSLX, bootsect...)
- # See Documentation/i386/boot.txt for
- # assigned ids
-
-# flags, unused bits must be zero (RFU) bit within loadflags
-loadflags:
-LOADED_HIGH = 1 # If set, the kernel is loaded high
-CAN_USE_HEAP = 0x80 # If set, the loader also has set
- # heap_end_ptr to tell how much
- # space behind setup.S can be used for
- # heap purposes.
- # Only the loader knows what is free
-#ifndef __BIG_KERNEL__
- .byte 0
-#else
- .byte LOADED_HIGH
-#endif
-
-setup_move_size: .word 0x8000 # size to move, when setup is not
- # loaded at 0x90000. We will move setup
- # to 0x90000 then just before jumping
- # into the kernel. However, only the
- # loader knows how much data behind
- # us also needs to be loaded.
-
-code32_start: # here loaders can put a different
- # start address for 32-bit code.
-#ifndef __BIG_KERNEL__
- .long 0x1000 # 0x1000 = default for zImage
-#else
- .long 0x100000 # 0x100000 = default for big kernel
-#endif
-
-ramdisk_image: .long 0 # address of loaded ramdisk image
- # Here the loader puts the 32-bit
- # address where it loaded the image.
- # This only will be read by the kernel.
-
-ramdisk_size: .long 0 # its size in bytes
-
-bootsect_kludge:
- .long 0 # obsolete
-
-heap_end_ptr: .word modelist+1024 # (Header version 0x0201 or later)
- # space from here (exclusive) down to
- # end of setup code can be used by setup
- # for local heap purposes.
-
-pad1: .word 0
-cmd_line_ptr: .long 0 # (Header version 0x0202 or later)
- # If nonzero, a 32-bit pointer
- # to the kernel command line.
- # The command line should be
- # located between the start of
- # setup and the end of low
- # memory (0xa0000), or it may
- # get overwritten before it
- # gets read. If this field is
- # used, there is no longer
- # anything magical about the
- # 0x90000 segment; the setup
- # can be located anywhere in
- # low memory 0x10000 or higher.
-
-ramdisk_max: .long (-__PAGE_OFFSET-(512 << 20)-1) & 0x7fffffff
- # (Header version 0x0203 or later)
- # The highest safe address for
- # the contents of an initrd
-
-kernel_alignment: .long CONFIG_PHYSICAL_ALIGN #physical addr alignment
- #required for protected mode
- #kernel
-#ifdef CONFIG_RELOCATABLE
-relocatable_kernel: .byte 1
-#else
-relocatable_kernel: .byte 0
-#endif
-pad2: .byte 0
-pad3: .word 0
-
-cmdline_size: .long COMMAND_LINE_SIZE-1 #length of the command line,
- #added with boot protocol
- #version 2.06
-
-trampoline: call start_of_setup
- .align 16
- # The offset at this point is 0x240
- .space (0xeff-0x240+1) # E820 & EDD space (ending at 0xeff)
-# End of setup header #####################################################
-
-start_of_setup:
-# Bootlin depends on this being done early
- movw $0x01500, %ax
- movb $0x81, %dl
- int $0x13
-
-#ifdef SAFE_RESET_DISK_CONTROLLER
-# Reset the disk controller.
- movw $0x0000, %ax
- movb $0x80, %dl
- int $0x13
-#endif
-
-# Set %ds = %cs, we know that SETUPSEG = %cs at this point
- movw %cs, %ax # aka SETUPSEG
- movw %ax, %ds
-# Check signature at end of setup
- cmpw $SIG1, setup_sig1
- jne bad_sig
-
- cmpw $SIG2, setup_sig2
- jne bad_sig
-
- jmp good_sig1
-
-# Routine to print asciiz string at ds:si
-prtstr:
- lodsb
- andb %al, %al
- jz fin
-
- call prtchr
- jmp prtstr
-
-fin: ret
-
-# Space printing
-prtsp2: call prtspc # Print double space
-prtspc: movb $0x20, %al # Print single space (note: fall-thru)
-
-# Part of above routine, this one just prints ascii al
-prtchr: pushw %ax
- pushw %cx
- movw $7,%bx
- movw $0x01, %cx
- movb $0x0e, %ah
- int $0x10
- popw %cx
- popw %ax
- ret
-
-beep: movb $0x07, %al
- jmp prtchr
-
-no_sig_mess: .string "No setup signature found ..."
-
-good_sig1:
- jmp good_sig
-
-# We now have to find the rest of the setup code/data
-bad_sig:
- movw %cs, %ax # SETUPSEG
- subw $DELTA_INITSEG, %ax # INITSEG
- movw %ax, %ds
- xorb %bh, %bh
- movb (497), %bl # get setup sect from bootsect
- subw $4, %bx # LILO loads 4 sectors of setup
- shlw $8, %bx # convert to words (1sect=2^8 words)
- movw %bx, %cx
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arch/i386/boot/video.S
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arch/i386/kernel/verify_cpu.S
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include/linux/edd.h
View fileThis diff is incomplete. Download the complete patch.