;
; INT 22h AX=0022h Close directory
;
-%if IS_SYSLINUX
-comapi_closedir:
- mov si,P_SI
- call close_dir
- clc
- ret
-%else
-comapi_closedir equ comapi_err
-%endif
+comapi_closedir equ comapi_close
;
; INT 22h AX=0023h Query shuffler size
--- /dev/null
+; -*- fundamental -*- (asm-mode sucks)
+; -----------------------------------------------------------------------
+;
+; Copyright 1994-2009 H. Peter Anvin - All Rights Reserved
+; Copyright 2009 Intel Corporation; author: H. Peter Anvin
+;
+; 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, Inc., 51 Franklin St, Fifth Floor,
+; Boston MA 02110-1301, USA; either version 2 of the License, or
+; (at your option) any later version; incorporated herein by reference.
+;
+; -----------------------------------------------------------------------
+
+;
+; diskfs.inc
+;
+; Common code for conventional disk-based filesystems
+;
+
+;
+; Some semi-configurable constants... change on your own risk.
+;
+FILENAME_MAX equ (1 << FILENAME_MAX_LG2) ; Max mangled filename size
+NULLFILE equ 0 ; Null character == empty filename
+NULLOFFSET equ 0 ; Position in which to look
+retry_count equ 16 ; How patient are we with the disk?
+%assign HIGHMEM_SLOP 0 ; Avoid this much memory near the top
+LDLINUX_MAGIC equ 0x3eb202fe ; A random number to identify ourselves with
+
+MAX_OPEN_LG2 equ 6 ; log2(Max number of open files)
+MAX_OPEN equ (1 << MAX_OPEN_LG2)
+
+SECTOR_SHIFT equ 9
+SECTOR_SIZE equ (1 << SECTOR_SHIFT)
+
+;
+; The following structure is used for "virtual kernels"; i.e. LILO-style
+; option labels. The options we permit here are `kernel' and `append
+; Since there is no room in the bottom 64K for all of these, we
+; stick them in high memory and copy them down before we need them.
+;
+ struc vkernel
+vk_vname: resb FILENAME_MAX ; Virtual name **MUST BE FIRST!**
+vk_rname: resb FILENAME_MAX ; Real name
+vk_appendlen: resw 1
+vk_type: resb 1 ; Type of file
+ alignb 4
+vk_append: resb max_cmd_len+1 ; Command line
+ alignb 4
+vk_end: equ $ ; Should be <= vk_size
+ endstruc
+
+
+
+; ---------------------------------------------------------------------------
+; BEGIN CODE
+; ---------------------------------------------------------------------------
+
+;
+; Memory below this point is reserved for the BIOS and the MBR
+;
+ section .earlybss
+ global trackbuf
+trackbufsize equ 8192
+trackbuf resb trackbufsize ; Track buffer goes here
+ ; ends at 2800h
+
+ section .bss16
+ alignb 16
+ global Files
+Files resb MAX_OPEN*16 ; 16 == open_file_t_size
+
+;
+; Common bootstrap code for disk-based derivatives
+;
+%include "diskstart.inc"
+
+
+;
+; Now, everything is "up and running"... patch kaboom for more
+; verbosity and using the full screen system
+;
+ ; E9 = JMP NEAR
+ mov di,kaboom.patch
+ mov al,0e9h
+ stosb
+ mov ax,kaboom2-2
+ sub ax,di
+ stosw
+
+;
+; Now we're all set to start with our *real* business. First load the
+; configuration file (if any) and parse it.
+;
+; In previous versions I avoided using 32-bit registers because of a
+; rumour some BIOSes clobbered the upper half of 32-bit registers at
+; random. I figure, though, that if there are any of those still left
+; they probably won't be trying to install Linux on them...
+;
+; The code is still ripe with 16-bitisms, though. Not worth the hassle
+; to take'm out. In fact, we may want to put them back if we're going
+; to boot ELKS at some point.
+;
+
+;
+; Load configuration file
+;
+ pm_call load_config
+ jz no_config_file
+
+;
+; Now we have the config file open. Parse the config file and
+; run the user interface.
+;
+%include "ui.inc"
+
+
+;
+; unmangle_name: Does the opposite of mangle_name; converts a DOS-mangled
+; filename to the conventional representation. This is needed
+; for the BOOT_IMAGE= parameter for the kernel.
+;
+; DS:SI -> input mangled file name
+; ES:DI -> output buffer
+;
+; On return, DI points to the first byte after the output name,
+; which is set to a null byte.
+;
+unmangle_name: call strcpy
+ dec di ; Point to final null byte
+ ret
+
+;
+;
+; kaboom2: once everything is loaded, replace the part of kaboom
+; starting with "kaboom.patch" with this part
+
+kaboom2:
+ mov si,err_bootfailed
+ call writestr
+ cmp byte [kaboom.again+1],18h ; INT 18h version?
+ je .int18
+ call getchar
+ call vgaclearmode
+ int 19h ; And try once more to boot...
+.norge: jmp short .norge ; If int 19h returned; this is the end
+.int18:
+ call vgaclearmode
+ int 18h
+.noreg: jmp short .noreg ; Nynorsk
+
+; -----------------------------------------------------------------------------
+; Common modules
+; -----------------------------------------------------------------------------
+
+%include "common.inc" ; Universal modules
+%include "plaincon.inc" ; writechr
+%include "writestr.inc" ; String output
+%include "writehex.inc" ; Hexadecimal output
+%include "localboot.inc" ; Disk-based local boot
+
+; -----------------------------------------------------------------------------
+; Begin data section
+; -----------------------------------------------------------------------------
+
+ section .data16
+copyright_str db ' Copyright (C) 1994-'
+ asciidec YEAR
+ db ' H. Peter Anvin et al', CR, LF, 0
+err_bootfailed db CR, LF, 'Boot failed: please change disks and press '
+ db 'a key to continue.', CR, LF, 0
+
+;
+; Config file keyword table
+;
+%include "keywords.inc"
+
+;
+; Extensions to search for (in *forward* order).
+;
+ alignz 4
+exten_table: db '.cbt' ; COMBOOT (specific)
+%if IS_SYSLINUX
+ db '.bss' ; Boot sector (add superblock)
+%endif
+ db '.bs', 0 ; Boot sector
+ db '.com' ; COMBOOT (same as DOS)
+ db '.c32' ; COM32
+exten_table_end:
+ dd 0, 0 ; Need 8 null bytes here
+
+;
+; Misc initialized (data) variables
+;
+%ifdef debug ; This code for debugging only
+debug_magic dw 0D00Dh ; Debug code sentinel
+%endif
+
+ alignz 4
+BufSafe dw trackbufsize/SECTOR_SIZE ; Clusters we can load into trackbuf
+BufSafeBytes dw trackbufsize ; = how many bytes?
+%ifndef DEPEND
+%if ( trackbufsize % SECTOR_SIZE ) != 0
+%error trackbufsize must be a multiple of SECTOR_SIZE
+%endif
+%endif
; Some semi-configurable constants... change on your own risk.
;
my_id equ extlinux_id
-; NASM 0.98.38 croaks if these are equ's rather than macros...
FILENAME_MAX_LG2 equ 8 ; log2(Max filename size Including final null)
-FILENAME_MAX equ (1 << FILENAME_MAX_LG2) ; Max mangled filename size
-NULLFILE equ 0 ; Null character == empty filename
-NULLOFFSET equ 0 ; Position in which to look
-retry_count equ 16 ; How patient are we with the disk?
-%assign HIGHMEM_SLOP 0 ; Avoid this much memory near the top
-LDLINUX_MAGIC equ 0x3eb202fe ; A random number to identify ourselves with
-MAX_OPEN_LG2 equ 6 ; log2(Max number of open files)
-MAX_OPEN equ (1 << MAX_OPEN_LG2)
-
-SECTOR_SHIFT equ 9
-SECTOR_SIZE equ (1 << SECTOR_SHIFT)
-
-;
-; The following structure is used for "virtual kernels"; i.e. LILO-style
-; option labels. The options we permit here are `kernel' and `append
-; Since there is no room in the bottom 64K for all of these, we
-; stick them in high memory and copy them down before we need them.
-;
- struc vkernel
-vk_vname: resb FILENAME_MAX ; Virtual name **MUST BE FIRST!**
-vk_rname: resb FILENAME_MAX ; Real name
-vk_appendlen: resw 1
-vk_type: resb 1 ; Type of file
- alignb 4
-vk_append: resb max_cmd_len+1 ; Command line
- alignb 4
-vk_end: equ $ ; Should be <= vk_size
- endstruc
-
-
-
-; ---------------------------------------------------------------------------
-; BEGIN CODE
-; ---------------------------------------------------------------------------
-
-;
-; Memory below this point is reserved for the BIOS and the MBR
-;
- section .earlybss
- global trackbuf
-trackbufsize equ 8192
-trackbuf resb trackbufsize ; Track buffer goes here
- ; ends at 2800h
-
- section .bss16
- alignb 16
- global Files
-Files resb MAX_OPEN*16 ; 16 == open_file_t_size
-
-;
-; Common bootstrap code for disk-based derivatives
-;
-%include "diskstart.inc"
-
-
-;
-; Now, everything is "up and running"... patch kaboom for more
-; verbosity and using the full screen system
-;
- ; E9 = JMP NEAR
- mov di,kaboom.patch
- mov al,0e9h
- stosb
- mov ax,kaboom2-2
- sub ax,di
- stosw
-
-;
-; Now we're all set to start with our *real* business. First load the
-; configuration file (if any) and parse it.
-;
-; In previous versions I avoided using 32-bit registers because of a
-; rumour some BIOSes clobbered the upper half of 32-bit registers at
-; random. I figure, though, that if there are any of those still left
-; they probably won't be trying to install Linux on them...
-;
-; The code is still ripe with 16-bitisms, though. Not worth the hassle
-; to take'm out. In fact, we may want to put them back if we're going
-; to boot ELKS at some point.
-;
-
-;
-; Load configuration file
-;
- pm_call load_config
- jz no_config_file
-
-;
-; Now we have the config file open. Parse the config file and
-; run the user interface.
-;
-%include "ui.inc"
-
-
-;
-; unmangle_name: Does the opposite of mangle_name; converts a DOS-mangled
-; filename to the conventional representation. This is needed
-; for the BOOT_IMAGE= parameter for the kernel.
-;
-; DS:SI -> input mangled file name
-; ES:DI -> output buffer
-;
-; On return, DI points to the first byte after the output name,
-; which is set to a null byte.
-;
-unmangle_name: call strcpy
- dec di ; Point to final null byte
- ret
-
-;
-;
-; kaboom2: once everything is loaded, replace the part of kaboom
-; starting with "kaboom.patch" with this part
-
-kaboom2:
- mov si,err_bootfailed
- call writestr
- cmp byte [kaboom.again+1],18h ; INT 18h version?
- je .int18
- call getchar
- call vgaclearmode
- int 19h ; And try once more to boot...
-.norge: jmp short .norge ; If int 19h returned; this is the end
-.int18:
- call vgaclearmode
- int 18h
-.noreg: jmp short .noreg ; Nynorsk
-
-
-
-build_curdir_str:
- ret
-
-; -----------------------------------------------------------------------------
-; Common modules
-; -----------------------------------------------------------------------------
-
-%include "common.inc" ; Universal modules
-%include "plaincon.inc" ; writechr
-%include "writestr.inc" ; String output
-%include "writehex.inc" ; Hexadecimal output
-%include "strecpy.inc" ; strcpy with end pointer check
-%include "localboot.inc" ; Disk-based local boot
-
-; -----------------------------------------------------------------------------
-; Begin data section
-; -----------------------------------------------------------------------------
-
- section .data16
-copyright_str db ' Copyright (C) 1994-'
- asciidec YEAR
- db ' H. Peter Anvin et al', CR, LF, 0
-err_bootfailed db CR, LF, 'Boot failed: please change disks and press '
- db 'a key to continue.', CR, LF, 0
-config_name db 'extlinux.conf',0 ; Unmangled form
-
-;
-; Config file keyword table
-;
-%include "keywords.inc"
-
-;
-; Extensions to search for (in *forward* order).
-;
- alignz 4
-exten_table: db '.cbt' ; COMBOOT (specific)
- db '.img' ; Disk image
- db '.bs', 0 ; Boot sector
- db '.com' ; COMBOOT (same as DOS)
- db '.c32' ; COM32
-exten_table_end:
- dd 0, 0 ; Need 8 null bytes here
-
-;
-; Misc initialized (data) variables
-;
-%ifdef debug ; This code for debugging only
-debug_magic dw 0D00Dh ; Debug code sentinel
-%endif
-
- alignz 4
-BufSafe dw trackbufsize/SECTOR_SIZE ; Clusters we can load into trackbuf
-BufSafeBytes dw trackbufsize ; = how many bytes?
-%ifndef DEPEND
-%if ( trackbufsize % SECTOR_SIZE ) != 0
-%error trackbufsize must be a multiple of SECTOR_SIZE
-%endif
-%endif
+%include "diskfs.inc"
;
; ****************************************************************************
-%ifndef IS_MDSLINUX
%define IS_SYSLINUX 1
-%endif
%include "head.inc"
;
;
my_id equ syslinux_id
FILENAME_MAX_LG2 equ 6 ; log2(Max filename size Including final null)
-FILENAME_MAX equ (1<<FILENAME_MAX_LG2) ; Max mangled filename size
-NULLFILE equ 0 ; First char space == null filename
-NULLOFFSET equ 0 ; Position in which to look
-retry_count equ 16 ; How patient are we with the disk?
-%assign HIGHMEM_SLOP 0 ; Avoid this much memory near the top
-LDLINUX_MAGIC equ 0x3eb202fe ; A random number to identify ourselves with
-MAX_OPEN_LG2 equ 6 ; log2(Max number of open files)
-MAX_OPEN equ (1 << MAX_OPEN_LG2)
-
-SECTOR_SHIFT equ 9
-SECTOR_SIZE equ (1 << SECTOR_SHIFT)
-
-
-
-;
-; The following structure is used for "virtual kernels"; i.e. LILO-style
-; option labels. The options we permit here are `kernel' and `append
-; Since there is no room in the bottom 64K for all of these, we
-; stick them in high memory and copy them down before we need them.
-;
- struc vkernel
-vk_vname: resb FILENAME_MAX ; Virtual name **MUST BE FIRST!**
-vk_rname: resb FILENAME_MAX ; Real name
-vk_appendlen: resw 1
-vk_type: resb 1 ; Type of file
- alignb 4
-vk_append: resb max_cmd_len+1 ; Command line
- alignb 4
-vk_end: equ $ ; Should be <= vk_size
- endstruc
-
-
-
-; ---------------------------------------------------------------------------
-; BEGIN CODE
-; ---------------------------------------------------------------------------
-
-;
-; Memory below this point is reserved for the BIOS and the MBR
-;
- section .earlybss
-trackbufsize equ 8192
-trackbuf resb trackbufsize ; Track buffer goes here
- ; ends at 2800h
-
- section .bss16
- alignb 16
- global Files
-Files resb MAX_OPEN*16 ; 16 == open_file_t_size
-
-;
-; Common bootstrap code for disk-based derivatives
-;
-%include "diskstart.inc"
-
-
-
-;
-; Now, everything is "up and running"... patch kaboom for more
-; verbosity and using the full screen system
-;
- ; E9 = JMP NEAR
- mov di,kaboom.patch
- mov al,0e9h
- stosb
- mov ax,kaboom2-2
- sub ax,di
- stosw
-
-;
-; Now we're all set to start with our *real* business. First load the
-; configuration file (if any) and parse it.
-;
-; In previous versions I avoided using 32-bit registers because of a
-; rumour some BIOSes clobbered the upper half of 32-bit registers at
-; random. I figure, though, that if there are any of those still left
-; they probably won't be trying to install Linux on them...
-;
-; The code is still ripe with 16-bitisms, though. Not worth the hassle
-; to take'm out. In fact, we may want to put them back if we're going
-; to boot ELKS at some point.
-;
-
-;
-; Load configuration file
-;
- pm_call load_config
- jz no_config_file
-
-;
-; Now we have the config file open. Parse the config file and
-; run the user interface.
-;
-%include "ui.inc"
-
-
-;
-; close_dir:
-; Deallocates a directory structure (pointer in SI)
-; Assumes CS == DS.
-;
-close_dir:
- and si,si
- jz .closed
- mov dword [si],0 ; First dword == file_sector
- xor si,si
-.closed: ret
-
-
-
-;
-;
-; kaboom2: once everything is loaded, replace the part of kaboom
-; starting with "kaboom.patch" with this part
-
-kaboom2:
- mov si,err_bootfailed
- call writestr
- cmp byte [kaboom.again+1],18h ; INT 18h version?
- je .int18
- call getchar
- call vgaclearmode
- int 19h ; And try once more to boot...
-.norge: jmp short .norge ; If int 19h returned; this is the end
-.int18:
- call vgaclearmode
- int 18h
-.noreg: jmp short .noreg ; Nynorsk
-
-
-
-;
-; unmangle_name: Does the opposite of mangle_name; converts a DOS-mangled
-; filename to the conventional representation. This is needed
-; for the BOOT_IMAGE= parameter for the kernel.
-; NOTE: A 13-byte buffer is mandatory, even if the string is
-; known to be shorter.
-;
-; DS:SI -> input mangled file name
-; ES:DI -> output buffer
-;
-; On return, DI points to the first byte after the output name,
-; which is set to a null byte.
-;
-unmangle_name: call strcpy
- dec di ; Point to final null byte
- ret
-
-
-
-; -----------------------------------------------------------------------------
-; Common modules
-; -----------------------------------------------------------------------------
-
-%include "common.inc" ; Universal modules
-%include "plaincon.inc" ; writechr
-%include "writestr.inc" ; String output
-%include "writehex.inc" ; Hexadecimal output
-%include "localboot.inc" ; Disk-based local boot
-
-; -----------------------------------------------------------------------------
-; Begin data section
-; -----------------------------------------------------------------------------
-
- section .data16
-copyright_str db ' Copyright (C) 1994-'
- asciidec YEAR
- db ' H. Peter Anvin et al', CR, LF, 0
-err_bootfailed db CR, LF, 'Boot failed: please change disks and press '
- db 'a key to continue.', CR, LF, 0
-;
-; Config file keyword table
-;
-%include "keywords.inc"
-
-;
-; Extensions to search for (in *forward* order).
-;
-exten_table: db '.cbt' ; COMBOOT (specific)
- db '.bss' ; Boot Sector (add superblock)
- db '.bs', 0 ; Boot Sector
- db '.com' ; COMBOOT (same as DOS)
- db '.c32' ; COM32
-exten_table_end:
- dd 0, 0 ; Need 8 null bytes here
-
-;
-; Misc initialized (data) variables
-;
-%ifdef debug ; This code for debugging only
-debug_magic dw 0D00Dh ; Debug code sentinel
-%endif
-
- alignz 4
-BufSafe dw trackbufsize/SECTOR_SIZE ; Clusters we can load into trackbuf
-BufSafeBytes dw trackbufsize ; = how many bytes?
-%ifndef DEPEND
-%if ( trackbufsize % SECTOR_SIZE ) != 0
-%error trackbufsize must be a multiple of SECTOR_SIZE
-%endif
-%endif
+%include "diskfs.inc"
projects / profile / ivi / syslinux.git / commitdiff