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Assembly Source File | 1996-04-28 | 35.1 KB | 1,093 lines

; >>> this is file LOADLINj.ASM ;============================================================================ ; LOADLIN v1.6 (C) 1994..1996 Hans Lermen (lermen@elserv.ffm.fgan.de) ; ; 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., 675 Mass Ave, Cambridge, MA 02139, USA. ; ;---------------------------------------------------------------------------- ; Comments and bug reports are welcome and may be sent to: ; E-Mail: lermen@elserv.ffm.fgan.de ; SnailMail: Hans Lermen ; Am Muehlenweg 38 ; D53424 REMAGEN-Unkelbach ; GERMANY ; ;============================================================================ check_VCPI_present proc near pushad push es push ds lea esp,[esp-4] ; local space @@stack struc @@handle dw ? dw ? @@ds dw ? @@es dw ? pushad_struc @@ @@stack ends xor eax,eax ; check EMM_interrupt present mov [esp].@@eax,eax mov es,ax mov es,word ptr es:[emm_int*4+2] cmp Dword ptr es:[10+4],'0XXX' jne @@ex cmp dword ptr es:[10],'XMME' je @@ok cmp dword ptr es:[10],'QMME' ; this also works (as told by <J.S.Peatfield@damtp.cambridge.ac.uk>) jne @@ex @@ok: mov ax,4000h ; check emm menager status int emm_int or ah,ah jnz @@ex mov ax,_GET_VERSION*256 ; get version int emm_int cmp ax,40h ; version must be greater 4.0 jb @@ex mov ax,_ALLOCATE_RAW_PAGES mov bx,4 int emm_int cmp ah,0 jnz @@ex mov word ptr [esp].@@handle,dx ; save handle mov ax,0DE00h ; check for VCPI present int emm_int cmp ah,0 jne short @@notok mov byte ptr [esp].@@eax,1 @@notok: mov dx,word ptr [esp].@@handle mov ax,_DEALLOCATE_PAGES*256 int emm_int @@ex: lea esp,[esp+4] ; discar local space pop ds pop es popad or ax,ax ret check_VCPI_present endp get_VCPI_interface proc near push cs ;* buffer for server GDT entries push offset gdtvcpi_code ;* push cs ;* buffer for server page0 push offset page0 ;* call get_protected_mode_interface ret get_VCPI_interface endp check_low_mem_mapping proc near call get_VCPI_interface xor edx,edx lea si,page0 cld mov cx,(640/4) @@loop: lodsd and ax,0f000h cmp eax,edx jne @@ex_false add edx,1000h loop @@loop mov ax,1 @@ex: or ax,ax ret @@ex_false: xor ax,ax jmp @@ex check_low_mem_mapping endp get_protected_mode_interface proc near ARG server_pagebuffer:dword,server_selectors:dword = returnpop push bp mov bp,sp push si push di push ds push es ; convert pagebuffer to linear address movzx eax,word ptr server_pagebuffer+2 movzx ebx,word ptr server_pagebuffer shl eax,4 add eax,ebx shr eax,4 ; make real mode address ;XXXXXXXXXX push ds mov es,ax ; ES = frame of server_pagebuf xor di,di ; ES:DI = >buffer for page0-table< lds si,server_selectors ; DS:DI = >3 GDT entries for VCPI ; calling VCPI server mov ax,0DE01h int emm_int pop ds ; save VCPI server entry for protected mode mov dword ptr server_vcpi_entry,ebx ; set the VCPI-Code selector mov word ptr server_vcpi_entry+4,g_vcpi_code ;XXXXXXXXXXX pop es pop ds pop di pop si pop bp ret returnpop get_protected_mode_interface endp try_biosintv proc near pushad mov ax,DOS_OPEN_FILE shl 8 lea dx,@@fname DosInt jc @@ex_false mov bx,ax mov ax,4402h mov cx,size intv_buf lea dx,intv_buf DosInt pushf push ax DosCall DOS_CLOSE_FILE pop ax popf jc @@ex_false mov intv_size,ax mov ax,1 @@ex: or ax,ax popad ret @@ex_false: xor ax,ax jmp @@ex @@fname db '$BIOSINT',0 try_biosintv endp try_realbios proc near pushad mov ax,DOS_OPEN_FILE shl 8 lea dx,@@fname_realbios DosInt jc @@ex_false mov bx,ax lea dx,intv_buf mov cx,realbios_end-intv_buf DosCall DOS_READ_FROM_HANDLE pushf push ax DosCall DOS_CLOSE_FILE pop ax popf jc @@ex_false cmp ax,realbios_end-intv_buf jne @@ex_false mov intv_size,ax cmp cs:option_rx,1 je @@ex_true ; we now check the BIOS-revision to be sure ; that we have the right file push es mov ax,0ffffh mov es,ax mov eax,dword ptr es:[biosdate-reset_jmpop] cmp eax,dword ptr cs:biosdate jne @@ex_wrong_bios mov eax,dword ptr es:[(biosdate-reset_jmpop)+4] cmp eax,dword ptr cs:biosdate+4 jne @@ex_wrong_bios ; we check the real_bios_magic cmp cs:real_bios_magic,0a5a5h jne @@ex_wrong_bios @@ex_true: mov ax,1 pop es @@ex: or ax,ax popad ret @@ex_false: mov intv_size,0 xor ax,ax jmp @@ex @@ex_wrong_bios: pop es mov wrong_realbios,1 call force_error_verbose jmp @@ex_false @@fname_realbios db REALBIOS_FILE,0 try_realbios endp get_default_bios_intvectors proc near cmp option_ja,0 jnz @@first_javier cmp option_realbios,0 jnz @@first_realbios call try_biosintv jnz @@ex call try_realbios @@ex: ret @@first_realbios: call try_realbios jnz @@ex call try_biosintv jmp @@ex @@first_javier: mov intv_size,0 jmp @@ex get_default_bios_intvectors endp pmode_return_esp dd ? ; used to return from real-mode-switch real_IDTR dw 03ffh ;needed to load real intvector after switch dd 0 pmode_task proc near ; We come here in protected mode via VCPI-CALL ; have only to set up all things to switch back to 386-realmode ; ; We follow the INTEL recomended procedure to do this ; (80386 Programmer's Reference Manual, Chapter 14.5) ; .386p CLI ; just to be sure ; 1. We know, that paging is enabled, ; that linear addresses have identical mapping ; so we can clear the PG bit mov eax,CR0 and eax,07fffffffh mov CR0,eax ; paging is off xor eax,eax mov CR3,eax ; clear out paging cache ; 2. We must transfer control to segment with 64K limit ; we ARE on such a segment, no need to do it here ; 3. Load segment registers SS,DS,ES,FS,GS with a selector ; that points to a descriptor containing the the values: ; limit 64k = 0FFFFh ; byte granularity ; Expand up ; writable ; present ; ; We have that descriptor, its our gdt_data. mov ax,g_data mov ss,ax mov ds,ax mov es,ax mov fs,ax mov gs,ax ; 4. Disable Interrrupts ; ( we did that above ) ; 5. Clear the PE bit in CR0 mov eax,CR0 and al,0feh mov CR0,eax ; we are go back to realmode ; 6. Flush the instruction queue and load CS with approritate value ;jmp far ptr @@here db 0EAh dw @@here reloc_hseg_1 dw High_Seg_ @@here label far ; 7. Use LIDT instruction to load the base and limits of the ; real-mode interrupt vector table lidt fword ptr cs:real_IDTR .386 ; 8. Enable interrupts (we are doing this later) ; 9. Load segment register mov ax,High_Seg_ reloc_hseg_2 equ word ptr ($-2) mov ss,ax mov ds,ax mov es,ax mov fs,ax mov gs,ax mov esp,pmode_return_esp ; now we are in "real" real-mode call restore_bios_default_vectors @@ex: popad ret pmode_task endp iodelay macro jmp short $+2 jmp short $+2 endm get_mem_from_CMOS proc near pushf cli push bx mov al,18h out [070h],al dec al mov bl,al iodelay in al,[071h] mov ah,al mov al,bl iodelay out [070h],al iodelay in al,[071h] ; extended mem read from CMOS pop bx popf ret get_mem_from_CMOS endp restore_bios_default_vectors proc near push_ es,ds,ax,cx,si,di xor di,di mov es,di cmp cs:have_to_intercept_setup,0 jz @@p2 ; No REALBIOS or device driver cmp word ptr cs:intv_buf+(4*15h+2),0 jne @@ex ; Only once mov eax,dword ptr es:[4*15h] mov dword ptr cs:intv_buf+(4*15h),eax call get_mem_from_CMOS mov cs:real_bios_int15,ax jmp @@p1 @@p2: mov cx,cs:intv_size shr cx,2 jcxz @@ex ; we now reset the intvector to bios-defaults push cs pop ds cmp cx,(size intv_buf)/4 ; have we REALBIOS jna @@1 ; no ; yes ; restoring BIOSdata also mov cx,(dummy_dos_data-intv_buf)/4 @@1: lea si,intv_buf cld rep movsd cmp cs:intv_size,(size intv_buf) ; have we REALBIOS jna @@8 ; no ; yes, restoring BIOSscratch also mov di,09FC0h mov es,di xor di,di lea si,bios_scratch mov cx,(size bios_scratch)/4 rep movsd ; now reprogram the PICs (8259A) ; (may be redirected by VCPI-client) mov al,11h ; enter programming mode out [20h],al ; master iodelay out [0A0h],al ; slave iodelay mov al,8 ; IRQ0..7 --> INT8..F out [21h],al ; master iodelay mov al,70h ; IRQ8..F --> INT70..77 out [0A1h],al ; slave iodelay mov al,4 ; master bit out [21h],al ; master iodelay mov al,2 ; slave bit out [0A1h],al ; slave iodelay mov al,1 ; 8086 mode out [21h],al ; master iodelay out [0A1h],al ; slave iodelay mov al,cs:slaveIMR out [0A1h],al ; slave iodelay mov al,cs:masterIMR out [21h],al ; master @@p1: ; we hook on the INT15 xor ax,ax mov es,ax mov word ptr es:[4*15h],offset our_int15 mov word ptr es:[4*15h+2],cs ; now we must reinit the video controler ; to the values just set in the BIOS-data ; we do it by calling the appropriate INT 10h mov ax,3003h ; al = color mode and ah,byte ptr cs:bios_data+10h ; get EQUIPPEMENT-flags cmp ah,30h jne @@6 mov al,7 ; al = mono mode @@6: xor ah,ah INT 10h @@8: push ds pop es @@ex: mov cs:intv_size,0 ; avoid second call pop_ es,ds,ax,cx,si,di ret restore_bios_default_vectors endp our_int15 proc near ; interrupt 15 hook, in case of realbios cmp ah,88h je @@we_do_it jmp dword ptr cs:intv_buf+(4*15H) @@we_do_it: mov ax,cs:real_bios_int15 ;;;test mov ax,0c00h*4 iret our_int15 endp switch_to_protected_mode_and_return_in_386realmode proc near ; NOTE: must have called get_VCPI_interface before this ; ; returns with interrpts disabled ; all registers preserved, all segment registers = "High_Seg" cmp cs:have_to_force_realmode,0 jnz @@goon ret @@goon: mov cs:have_to_force_realmode,0 pushad mov pmode_return_esp,esp lea ax,pmode_task movzx eax,ax mov dword ptr protected_mode_target,eax mov word ptr protected_mode_target+4,g_code movzx esi,High_Seg shl esi,4 lea si,our_CR3[si] CLI mov ax,0DE0Ch int emm_int ; jumps to protected mode ; does NOT return here ; "pmode_task" does return directly to our caller switch_to_protected_mode_and_return_in_386realmode endp ; input: ; ES:DI pointer to string ; AL = terminating character ; output: ; AX= length of string, not counting terminating character ; all other registers preserved strlen proc near .8086 push_ di,cx xor cx,cx dec cx cld repne scasb mov ax,di dec ax pop_ di,cx sub ax,di .386 ret strlen endp get_kernel_version proc near ; Input: ; DS=CS ; Output: ; EAX= converted verion number as: ; 1.2.3 (root:pipapo) #4 ... ---> EAX= 01020304h ; 1.2.3 ---> EAX= 01020300h ; all other registers preserved xor eax,eax cmp have_to_intercept_setup,2 jne @@ex cmp setup_header_version,0105h jb @@ex cmp kernel_version,0 jz @@ex push_ esi,edx mov si,kernel_version lea si,setup_prog[si] call value_of mov edx,eax call value_of ror eax,8 shld edx,eax,8 call value_of ror eax,8 shld edx,eax,8 xor eax,eax cmp byte ptr [si-1],0 ; end of string ? je @@ex_ cld @@loop: lodsb test ax,ax jz @@ex_ cmp al,'#' jne @@loop call value_of ror eax,8 @@ex_: shld edx,eax,8 mov eax,edx pop_ esi,edx @@ex: ret get_kernel_version endp writechar proc near push_ eax,edx push eax mov byte ptr [esp+1],'$' mov dx,sp call print add sp,4 pop_ eax,edx ret writechar endp writestring proc near cld @@1: lodsb test al,al jz @@ex call writechar loop @@1 @@ex: ret writestring endp writehexdigit proc near push eax and al,0fh add al,'0' cmp al,'9' jna @@m1 add al,'A'-('9'+1) @@m1: call writechar pop eax ret writehexdigit endp writehexbyte proc near push eax ror eax,4 call writehexdigit rol eax,4 call writehexdigit pop eax ret writehexbyte endp writehexword proc near push eax ror eax,8 call writehexbyte rol eax,8 call writehexbyte pop eax ret writehexword endp writehexdword proc near push eax ror eax,16 call writehexword rol eax,16 call writehexword pop eax ret writehexdword endp force_error_verbose proc near mov option_v,1 mov option_t,1 mov option_t_forced,1 ret force_error_verbose endp get_effective_physmem proc near ; input: none ; output: EAX = number of total physical RAM in bytes ; (may be set by mem= param) cmp end_of_physmem,0 jz @@continue mov eax,end_of_physmem ret @@continue: mov ah,88h cmp intv_size,15h*4 jnb @@sim_int15 cmp have_to_intercept_setup,0 jz @@sim_int15_1 call get_mem_from_CMOS jmp @@1 ; we take int 15 as is, result may be wrong ; but Linux takes this as memory @@sim_int15_1: int 15h jmp @@1 @@sim_int15: cmp wrong_realbios,0 jne @@sim_int15_1 cmp cs:real_bios_magic,0a5a5h ; have we a saved value jne @@sim_int15_2 ; no mov ax,cs:real_bios_int15 ; yes jmp @@1 @@sim_int15_2: ; we take int 15 routine as saved by BIOSINTV ; hopefully this gets better result pushf cli push cs push offset @@1 push dword ptr intv_buf+(15h*4) retf @@1: movzx eax,ax shl eax,10 ; now have extended mem in bytes add eax,100000h ; we add we 1Meg of conventional mem ret get_effective_physmem endp print_verbose proc near pushad push_ ds,es @@print macro tx lea dx,tx call print endm @@cr macro call print_crlf endm @@prints macro tx,count mov cx,count lea si,tx call writestring endm @@hexw macro v mov ax,v call writehexword endm @@print @@t1 @@prints image_name,<size image_name> cmp have_to_intercept_setup,2 jne @@m1 cmp setup_header_version,0105h jb @@m1 cmp kernel_version,0 jz @@m1 @@print @@t1_ mov dx,kernel_version add dx,offset setup_prog call print @@m1: @@print @@t2 @@hexw kernel_size cmp have_big_kernel,0 jz @@m1_1 @@print @@t2_big jmp @@m1_2 @@m1_1: @@print @@t2_ @@m1_2: @@hexw new_setup_size cmp setup_version,0201h jb @@m1_5 test loadflags,CAN_USE_HEAP jz @@m1_5 @@print @@t2_heap mov ax,heap_end_ptr sub ax,new_setup_size @@hexw ax @@m1_5: @@print @@v1 @@hexw vga_mode @@print @@c2 lea di,command_line xor ax,ax call strlen push ax call writehexword @@print @@c1 pop cx @@prints command_line,cx @@cr @@verbose_stat: @@print @@t21 mov eax,load_buffer_size call writehexdword movzx bx,high_mem_access shl bx,1 mov dx,@@hmtable[bx] call print @@print @@t21_ mov ax,maximum_setup_sects*512 call writehexword cmp have_relocated_setup,0 jz @@mmt22 @@print @@t21_oc @@mmt22: cmp high_mem_access,0 jz @@mmt23 @@print @@t22low mov eax,heap_end sub eax,heap_ptr call writehexdword @@print @@t22low2 @@mmt23: @@print @@t22 call get_effective_physmem call writehexdword @@print @@t5 lea dx,@@real_ cmp cpu_type,cpu_386GE je @@3 lea dx,@@real_p ja @@3 lea dx,@@v86 @@3: call print cmp wrong_realbios,0 je @@3__ @@print @@t6_ lea dx,@@t6__ jmp @@3_1 @@3__: cmp intv_size,0 jz @@3_1_ lea dx,@@t6 cmp intv_size,(size intv_buf) ; have we REALBIOS jna @@3_ lea dx,@@t6_ @@3_: call print lea dx,@@no cmp intv_size,0 jz @@3_1 lea dx,@@yes @@3_1: call print @@3_1_: @@print @@t7 lea dx,@@no cmp have_to_intercept_setup,1 jb @@3_2 lea dx,@@setup_ je @@3_2 lea dx,@@setup call print mov ax,setup_version call writehexword jmp @@3_2_1 @@3_2: call print @@3_2_1: @@print @@s mov bx,cpu_check_status mov dx,@@stable[bx] call print @@print @@cc2 lea di,comline+1 xor ax,ax call strlen push ax call writehexword @@print @@cc1 pop cx @@prints comline+1,cx @@print @@started lea dx,@@rundos cmp can_exit_to_dos,0 jnz @@4_1 lea dx,@@runshell @@4_1: call print cmp cannot_load_because_of_windows,0 jz @@5 @@print @@sw @@5: cmp cpu_type,cpu_386GE_real_paging jne @@6 @@print @@w1 @@6: movzx eax,kernel_size shl eax,4 cmp eax,load_buffer_size jb @@7 @@print @@w2 @@7: cmp new_setup_size,maximum_setup_sects*512 jna @@8 @@print @@w3 @@8: cmp option_force,0 jz @@8_1 @@print @@w4 @@8_1: pop_ ds,es popad ret @@t1 db 13,10,'Your current LINUX kernel boot configuration is:' db 13,10,' image file: $' @@t1_ db 13,10,' kernel version $' @@t2 db 13,10,' kernel size: 0x$' @@t2_ db '0 setup size: 0x$' @@t2_big db '0 (high loaded) setup size: 0x$' @@t2_heap db ', heap: 0x$' IF 0 @@t3 db 13,10,' ram disk size: 0x$' @@t4 db 13,10,' root device: 0x$' @@tro db ' read only$' @@trw db ' read/write$' ENDIF @@v1 db 13,10,' VGA mode: 0x$' @@c2 db 13,10,' command line (size 0x$' @@c1 db '):' db 13,10,' $' @@t21 db 13,10,'Your current DOS/CPU configuration is:' db 13,10,' load buffer size: 0x$' @@hmtable dw @@lowtx,@@vcpitx,@@int15tx,@@xmstx @@lowtx db ' $' @@vcpitx db ' VCPI$' @@int15tx db ' EXT $' @@xmstx db ' XMS $' @@t21_ db ', setup buffer size: 0x$' @@t21_oc db ' (reloc setup)$' @@t22low db 13,10,' lowmem buffer: 0x$' @@t22low2 db ' (part of load buffer)$' @@t22 db 13,10,' total memory: 0x$' @@t5 db 13,10,' CPU is in $' @@t6 db ', BIOSINTV.SYS: $' @@t6_ db ', REALBIOS: $' @@t6__ db 'YES, but ROM-BIOS-DATE differs, must rerun REALBIOS.EXE$' @@t7 db 13,10,' SetupIntercept: $' @@yes db 'YES$' @@no db 'NO$' @@v86 db 'V86 mode$' @@real_ db 'REAL mode$' @@real_p db 'undocumented REAL PAGING mode, trying any way$' @@setup_ db 'YES, patching setup code$' @@setup db 'YES, legal intercept, setup header version $' @@s db 13,10,' stat$' @@s8 db '4: VCPI_present, physmap=logmap, all OK for switch to realmode$' @@s6 db '3: VCPI_present, but physmap != logmap (check aborted)$' @@s4 db '2: cpu_V86, but no VCPI available (check aborted)$' @@s2 db '1: cpu in real 386 mode, no need to backswitch$' @@s0 db '0: cpu < 386$' @@stable dw @@s0,@@s2,@@s4,@@s6,@@s8 @@cc2 db 13,10,' input params (size 0x$' @@cc1 db '):' db 13,10,' $' @@started db 13,10,' LOADLIN started from $' @@rundos db 'DOS-prompt',13,10,'$' @@runshell db 'CONFIG.SYS (shell= ...)',13,10,'$' @@sw db ' You are running under MS-WINDOWS or Windows 95',13,10,'$' @@w1 db 'WARNING:',13,10 db ' Your CPU is in realmode, but PAGING is enabled !',13,10 db ' This is possible, but neither documented nor supported by INTEL.',13,10 db " May be your motherboard's BIOS is mapping shadow ram this way,",13,10 db ' or you are using one of those old and strange EMM managers,',13,10 db ' but probably this is an indication of a not exactly compatible',13,10 db ' 486 clone. If you are not using one of the older EMM-managers',13,10 db ' you better should use the -clone switch to work around.',13,10,'$' @@w2 db 'WARNING: Not enough free memory (load buffer size)$',13,10 @@w3 db 'WARNING: The setup buffer of LOADLIN is too small (must recompile)$',13,10 @@w4 db 'WARNING: Option -f set, CPU-Check bypassed !$',13,10 print_verbose_stat: pushad push_ ds,es jmp @@verbose_stat print_verbose endp close_debug_file proc near cmp debug_file_handle,0 jz @@ex push_ ax,bx mov bx,debug_file_handle DosCall DOS_CLOSE_FILE mov debug_file_handle,0 pop_ ax,bx @@ex: ret close_debug_file endp wait_and_reset_dsk proc near pushad push_ ds,es,fs,gs pushf sti cmp cs:option_dskreset,0 jz @@wait mov ax,0 mov dl,80h ; reset the whole disk system int 13h cmp cs:option_wait,0 jnz @@wait mov cs:option_wait,9 ; wait at least 1/2 a second @@wait: cmp cs:option_wait,0 jz @@ex cli mov ax,40h mov ds,ax movzx eax,cs:option_wait add eax,dword ptr ds:[6ch] sti nop @@loop: nop cli cmp eax,dword ptr ds:[6ch] sti ja @@loop @@ex: popf pop_ ds,es,fs,gs popad ret wait_and_reset_dsk endp ;============================================================================= logo_tx label byte IFDEF ALPHA INCLUDE LOADLINA.ASM ENDIF db 'LOADLIN v',LOADLIN_VERSION,' (C) 1994..1996 Hans Lermen <lermen@elserv.ffm.fgan.de>',13,10,'$' comspec_tx db 'comspec',0 windows_tx db 'windir',0 err_uppermem_tx db 'Not enough free memory between 90000h and 9ffffh,',13,10 db 'may be you have some zombie programs, try to reboot.',13,10 db "If this doesn't help, try to find out what driver occupies this space." newline_tx db 13,10,'$' enter_commandline_tx db 'Please enter name of kernel image file followed by optional ',13,10 db 'command line parameters for Linux (e.g. root=XXXX)',13,10 db 'or @file ( file = param file ) or "empty string" to abort:',13,10,'$' abort_tx db 'LOADLIN aborted by user',13,10,'$' err_file_notfound_tx db 'Image file not found,',13,10,'$' enter_file_tx db 'enter file name of Image:',13,10,'$' err_wrong_file_tx db 'not an Image file,',13,10,'$' err_wrong_setup_tx db 'Your current configuration needs interception of "setup.S,"',13,10 db 'but the setup-code in your Image file is *very* old (or wrong)',13,10 db 'Please use BIOSINTV/REALBIOS or try an other Image file',13,10,'$' err_setup_too_long_tx db 'Ooops..., size of "setup.S" has become too long for LOADLIN,',13,10 db 'please E-mail this condition to lermen@elserv.ffm.fgan.de !',13,10,'$' err_kernel_to_big_tx db 'not enough memory below 90000h to load kernel',13,10,'$' err_io_tx db 'IO Error during load',13,10,'$' insert_floppy_tx db 'Insert floppy disk for loading into RAMDISK',13,10,'$' err_cpu_v86_tx db 13,10,'CPU is in V86-mode (may be WINDOWS, EMM386, QEMM, 386MAX, ...)',13,10 db 'You need pure 386/486 real mode or a VCPI server to boot Linux',13,10 db 'VCPI is supported by most EMS drivers (if EMS is enabled),',13,10 db "but never under WINDOWS-3.1 or WINDOWS'95.",13,10 db "(However, real DOS-Mode of WINDOWS'95 can have EMS driver with VCPI)",13,10 db 'If loading via VCPI you also MUST have:',13,10 db ' 1. An interceptable setup-code (see MANUAL.TXT)',13,10 db ' 2. Identical Physical-to-Virtual mapping for the first 640 Kbytes',13,10,'$' err_wrong_cpu_tx db 'You need a 386 CPU at minimum, but you haven''t !',13,10,'$' err_comfile_tx db 'error on reading command line response file',13,10,'$' option_t_terminate_tx db 13,10,'Option -t set, Linux not loaded',13,10,'$' option_t_forced_tx db 13,10,'ERROR detected, Linux not loaded',13,10,'$' err_in_config_sys_tx db 13,10,'LOADLIN holding in idle loop (You must reboot)',13,10,'$' ;----------------------------------------------------------------------------- usage_tx db 13,10 db 'USAGE:',13,10 db ' LOADLIN @params',13,10 db ' LOADLIN [zimage_file] [options] [boot_params]',13,10 db ' without any params, LOADLIN displays this help message.',13,10 db ' @params:',13,10 db ' params is a DOS file containing all other options',13,10 db ' zimage_file:',13,10 db ' DOS file name of compressed Linux kernel image',13,10 db ' options:',13,10 db ' -v verbose, show information on params and configuration',13,10 db ' -t test mode, do all but starting Linux, also sets -v',13,10 db ' -d file debug mode, same as -t, but duplicates output to "file"',13,10 db " -clone ( Please read MANUAL.TXT before using this switch! )",13,10 db " -n no translation for root=/dev/...",13,10 db " -txmode switch to textmode 80x25 on startup",13,10 db " -noheap disable use of setup heap",13,10 db " -wait=nn after loading wait nn (DOS)ticks before booting Linux",13,10 db " -dskreset after loading reset all disks before booting Linux",13,10 db ' boot_params:',13,10 db ' root=xxx filesystem to be mounted by Linux as "/"',13,10 db ' (string passed unchanged to the kernel)',13,10 db ' xxx = hex number (e.g. root=201 for /dev/fd1)',13,10 db ' = /dev/mmmn (e.g. root=/dev/hda2)',13,10 db ' mmm = fd,hda,hdb,sda,sdb...',13,10 db ' n = 1..10.. decimal',13,10 db ' ro mount "/" readonly',13,10 db ' rw mount "/" read/write',13,10 db ' initrd=x (for kernels > 1.3.72) load file x into /dev/ram. If FS in x',13,10 db ' contains /linuxrc, execute it, and then remount to root=xxx.',13,10 db ' If root=/dev/ram, just load, bypass execution of /linuxrc',13,10,13,10 db ' for more boot params see PARAMS.TXT or Paul Gortmakers HOWTO:',13,10 db ' http://sunsite.unc.edu/mdw/HOWTO/BootPrompt-HOWTO.html',13,10 db ' http://rsphy1.anu.edu/~gpg109/BootPrompt-HOWTO.html',13,10 empty_tx db '$'