Author: wmb Date: 2008-12-20 09:00:00 +0100 (Sat, 20 Dec 2008) New Revision: 1040
Modified: cpu/x86/disassem.fth cpu/x86/pc/biosints.fth dev/geode/smi.fth Log: BIOS emulation - fixed some problems with installation from USB and CD-ROM.
Modified: cpu/x86/disassem.fth =================================================================== --- cpu/x86/disassem.fth 2008-12-20 07:55:35 UTC (rev 1039) +++ cpu/x86/disassem.fth 2008-12-20 08:00:00 UTC (rev 1040) @@ -160,8 +160,8 @@ then ( reg mod ) swap modes16 count $add-text ( mod ) case - 1 of op8@ +disp16 endof - 2 of op16@ +disp16 endof + 1 of op8@ bext +disp16 endof + 2 of op16@ wext +disp16 endof endcase ; : .ea ( -- )
Modified: cpu/x86/pc/biosints.fth =================================================================== --- cpu/x86/pc/biosints.fth 2008-12-20 07:55:35 UTC (rev 1039) +++ cpu/x86/pc/biosints.fth 2008-12-20 08:00:00 UTC (rev 1040) @@ -1,7 +1,8 @@ +purpose: Emulate legacy PC BIOS real-mode INTs +\ See license at end of file
-[ifdef] syslinux-loaded : disk-name ( -- $ ) " /pci/ide@0" ; [then] -[ifdef] preof-loaded : disk-name ( -- $ ) " /pci/ide@0" ; [then] -[ifdef] rom-loaded : disk-name ( -- $ ) " sd:0" ; [then] +8 /l* buffer: init-regs +h# 80 value bios-boot-dev#
struct 2 field >rm-gs @@ -74,6 +75,8 @@ : rm-esi@ caller-regs >rm-esi l@ ; : rm-esi! caller-regs >rm-esi l! ;
+: rm-si@ caller-regs >rm-esi w@ ; + : rm-retaddr@ caller-regs >rm-retaddr seg:off@ ;
: rm-flags@ caller-regs >rm-flags w@ ; @@ -84,6 +87,7 @@
true value show-rm-int? : noshow false to show-rm-int? ; +: noshow! false to show-rm-int? ; variable save-eax : snap-int true to show-rm-int? rm-eax@ save-eax ! @@ -399,18 +403,41 @@ h# 26 rm-eax! \ 32 bits ;
-0 value disk-ih +0 value bios-ih +0 value bios-cdrom-ih +0 value bios-disk-ih + false value show-reads? -1 value read-match
-: disk-read-sectors ( adr sector# #sectors -- #read ) +: drive-sectors ( -- n ) " #blocks" bios-ih $call-method ; +: drive-/sector ( -- n ) " block-size" bios-ih $call-method ; +[ifndef] notdef +: (bios-read-sectors) ( adr sector# #sectors -- #sectors-read ) + drive-/sector >r ( adr #sectors d.byte# r: /sector ) + swap r@ um* ( adr #sectors d.byte# r: /sector ) + " seek" bios-ih $call-method if ( adr #sectors r: /sector ) + r> 3drop 0 exit + then ( adr #sectors r: /sector ) + r@ * " read" bios-ih $call-method ( actual#bytes r: /sector ) + r> / ( #sectors-read ) +; +[else] +: (bios-read-sectors) ( adr sector# #sectors -- #sectors-read ) + " read-blocks" bios-ih $call-method +; +[then] + +: bios-read-sectors ( adr sector# #sectors -- #sectors-read ) noshow over read-match = if ." Reading block " read-match . debug-me then
- show-reads? if ." Read " 2 pick . over . dup . ." -- " then - " read-blocks" disk-ih $call-method + show-reads? if ." Read " 2 pick . over . dup . ." -- " then ( adr sec# #sec ) + + (bios-read-sectors) ( #sectors-read ) +\ " read-blocks" bios-ih $call-method + show-reads? if dup . cr then - ;
0 value entry-count @@ -420,43 +447,53 @@ then ;
-: disk-write-sectors ( adr sector# #sectors -- #read ) +: bios-write-sectors ( adr sector# #sectors -- #read ) \ ?hack noshow
\ ." Write " 2 pick . over . dup . ." -- " \ over h# 8b74aaa = if debug-me then - " write-blocks" disk-ih $call-method + " write-blocks" bios-ih $call-method \ dup . cr ;
+: select-bios-disk ( drive# -- ) + h# 82 = if bios-cdrom-ih else bios-disk-ih then to bios-ih +; : check-drive ( -- error? ) - rm-dl@ h# 80 <> if rm-set-cf 7 rm-ah! true exit then - disk-ih 0= dup if rm-set-cf h# aa rm-ah! then + show-reads? if ." Drive " rm-dl@ .x then + rm-dl@ h# 80 h# 81 between 0= if rm-set-cf 7 rm-ah! true exit then + bios-disk-ih to bios-ih + bios-ih 0= dup if rm-set-cf h# aa rm-ah! then ; -: read-sectors ( -- ) +: lba-check-drive ( -- error? ) + show-reads? if ." Drive " rm-dl@ .x then + rm-dl@ h# 80 h# 82 between 0= if rm-set-cf 7 rm-ah! true exit then + rm-dl@ select-bios-disk + bios-ih 0= dup if rm-set-cf h# aa rm-ah! then +; +: chs-read-sectors ( -- ) check-drive if exit then - disk-ih 0= if rm-set-cf h# aa rm-ah! exit then + bios-ih 0= if rm-set-cf h# aa rm-ah! exit then rm-ch@ rm-cl@ 6 rshift bwjoin ( cylinder# ) h# ff * rm-dh@ + ( trk# ) \ 255 heads h# 3f * rm-cl@ h# 3f and 1- + ( sector# ) \ 63 is max sector#
rm-bx@ rm-es@ seg:off> ( sector# adr ) swap rm-al@ ( adr sector# #sectors ) - disk-read-sectors rm-al! + bios-read-sectors rm-al! ; -: write-sectors ( -- ) +: chs-write-sectors ( -- ) check-drive if exit then - disk-ih 0= if rm-set-cf h# aa rm-ah! exit then + bios-ih 0= if rm-set-cf h# aa rm-ah! exit then rm-ch@ rm-cl@ 6 rshift bwjoin ( cylinder# ) h# ff * rm-dh@ + ( trk# ) \ 255 heads h# 3f * rm-cl@ h# 3f and 1- + ( sector# ) \ 63 is max sector#
rm-bx@ rm-es@ seg:off> ( sector# adr ) swap rm-al@ ( adr sector# #sectors ) - disk-write-sectors rm-al! + bios-write-sectors rm-al! ; -: drive-sectors ( -- n ) " #blocks" disk-ih $call-method ; : drive-params ( -- ) noshow check-drive if exit then @@ -472,37 +509,45 @@ rm-clr-cf ;
-: ds:si ( -- adr ) rm-esi@ rm-ds@ seg:off> ; +: ds:si ( -- adr ) rm-si@ rm-ds@ seg:off> ; : lba-read ( -- ) - check-drive if exit then + lba-check-drive if exit then ds:si ( packet-adr ) >r r@ 4 + seg:off@ r@ 8 + l@ r@ 2+ w@ ( adr sector# #sectors ) \ ." LBA " - disk-read-sectors r> 2+ w! + bios-read-sectors r> 2+ w! ; : lba-write ( -- ) - check-drive if exit then + lba-check-drive if exit then ds:si ( packet-adr ) >r r@ 4 + seg:off@ r@ 8 + l@ r@ 2+ w@ ( adr sector# #sectors ) \ ." LBA " - disk-write-sectors r> 2+ w! + bios-write-sectors r> 2+ w! ;
: check-disk-extensions ( -- ) noshow - check-drive if 0 rm-bx! exit then + lba-check-drive if 0 rm-bx! exit then rm-bx@ h# 55aa <> if exit then h# aa55 rm-bx! h# 20 rm-ah! 1 rm-cx! ; : ext-get-drive-params ( -- ) noshow - check-drive if exit then + lba-check-drive if exit then 0 rm-ah! ds:si >r ( adr ) r@ 2 + h# 0e erase \ CHS info not valid + + \ h# 70 is ATAPI, removable, LBA + \ h# 10 is LBA +\ rm-dl@ h# 81 = if h# 70 else h# 10 then r@ h# a + w! +\ XXX this might be a problem + rm-dl@ h# 82 = if ( 4 ) h# 34 else 0 then r@ 2 + w! + drive-sectors r@ h# 10 + l! 0 r@ h# 14 + l! \ Total #sectors - h# 200 r@ h# 18 + w! \ Sector len + + drive-/sector r@ h# 18 + w! \ Sector len h# 1a ( written-length ) r@ w@ h# 1e >= if -1 r@ h# 1a + l! \ No EDD @@ -525,26 +570,56 @@ ; : reset-disks ( -- ) noshow ;
+\ c.f. El Torito CD booting spec +\ We construct a valid status packet, even though NT doesn't look at its +\ contents. It only looks at the return value in AX. Most of the fields +\ herein are irrelevant for the "get status" function anyway. +create cd-stat +\ len type drive# ctlr# LBA devspec(master/slave, SCSI LUN, etc) + h# 13 c, 0 c, h# 82 c, 0 c, 0 l, 0 w, +\ userbuf loadseg #sectors #cyls sec,cyl #heads + 0 w, 0 w, 0 w, 0 c, 0 c, 0 c, + +: cdrom-status ( -- ) + \ We don't distinguish between AL=00 and AL=01; both return the same + \ status. AL=00 also terminates hard disk emulation, but we don't + \ do emulation, so that is effectively a no-op. The NT SETUPLDR + \ only uses AL=01 anyway. + \ DL should be the drive number (82); we don't check that + cd-stat ds:si h# 13 move + \ This is the return code. The El Torito spec doesn't say what + \ the return codes are supposed to be. NT SETUPLDR fails if anything + \ other than 0 is returned. + 0 rm-ax! + rm-set-cf \ CF set means that the system is not in emulation mode +; + : disk-int ( -- ) \ INT 13 handler rm-ah@ case h# 00 of reset-disks endof \ Reset disk system - h# 02 of read-sectors endof - h# 03 of write-sectors endof + h# 02 of chs-read-sectors endof + h# 03 of chs-write-sectors endof h# 08 of drive-params endof h# 15 of get-disk-type endof h# 41 of check-disk-extensions endof h# 42 of lba-read endof h# 43 of lba-write endof h# 48 of ext-get-drive-params endof + h# 4b of cdrom-status endof ( default ) ." Unsupported disk INT 13 - AH = " dup . cr endcase ;
+false value debug-mem? + : /1k d# 10 rshift ; : bigmem-16bit ( -- ) memory-limit dup h# 100.0000 min h# 10.0000 - 0 max /1k dup rm-ax! rm-cx! h# 100.0000 - 0 max d# 16 rshift dup rm-bx! rm-dx! + debug-mem? if + ." Bigmem 16: " rm-ax@ . rm-cx@ . rm-bx@ . rm-dx@ . cr + then ; : allmem ( -- n ) " /memory" find-package 0= abort" No /memory node" ( phandle ) @@ -571,7 +646,8 @@ h# 9fc00 0 d, h# a0000 h# 9fc00 - 0 d, 2 l, \ 28 reserved \ End test
- h# e0000. d, h# 20000. d, 2 l, \ 3c reserved +\ h# e0000. d, h# 20000. d, 2 l, \ 3c reserved + h# e8000. d, h# 08000. d, 2 l, \ 3c reserved h# 100000. d, 0. d, 1 l, \ 50 available \ 0. d, 0. d, 4 l, \ 64 don't reclaim (yet) 0. d, 0. d, 2 l, \ 64 reserved fw memory @@ -597,6 +673,9 @@ \ Otherwise copy out the next table entry, return length in ECX and next address in EBX dup rm-edi@ h# ffff and rm-es@ seg:off> ( adr dst ) rm-ecx@ move ( adr ) + debug-mem? if + ." E820 Mem: " dup rm-ecx@ ldump cr + then rm-ecx@ + rm-ebx! ( ) \ Continuation ;
@@ -688,8 +767,12 @@ noop h# 53 of apm endof h# 86 of rm-dx@ rm-cx@ wljoin us endof \ Delay microseconds - h# 8a of memory-limit h# 400.0000 - 0 max /1k lwsplit rm-dx! rm-ax! endof - h# 88 of h# fffc rm-ax! endof \ Extended memory - at least 64 MB + h# 8a of memory-limit h# 400.0000 - 0 max /1k lwsplit rm-dx! rm-ax! + debug-mem? if ." Mem 15/8a: " rm-dx@ . rm-ax@ . cr then + endof + h# 88 of h# fffc rm-ax! + debug-mem? if ." Mem 15/88: " rm-ax@ . cr then + endof \ Extended memory - at least 64 MB h# c0 of get-conf endof \ We use the extended BIOS data area as our workspace when loaded from another BIOS \ h# c1 of rm-set-cf h# 86 rm-ah! endof \ No extended BIOS data area @@ -727,7 +810,7 @@ 0 value polled? : poll-keystroke ( -- ) noshow - polled? 0= if ." ? " then +\ polled? 0= if ." ? " then true to polled? poll-key if ( scancode,ascii ) rm-ax! @@ -743,15 +826,16 @@ 0 to the-key rm-ax!
- rm-al@ [char] q = if debug-me then +\ rm-al@ [char] d = if debug-me then false to polled? ;
: keyboard-int ( -- ) \ INT 16 handler + noshow! rm-ah@ case 0 of get-keystroke endof 1 of poll-keystroke endof - 2 of noshow 0 rm-al! endof \ Claim that no shift keys are active + 2 of 0 rm-al! endof \ Claim that no shift keys are active 5 of rm-cx@ to the-key endof \ Put keystroke in buffer ( bit 7:sysrq 6:capslock 5:numlock 4:scrlock 3:ralt 2:rctrl 1:lalt 0:lctrl ) ( default ) ." Keyboard INT called with AH = " dup . cr @@ -830,12 +914,14 @@ h# 13 of disk-int endof h# 16 of keyboard-int endof h# 15 of system-int endof - h# 12 of 'ebda /1k rm-ax! endof \ Low memory size + h# 12 of 'ebda /1k rm-ax! + debug-mem? if ." Lowmem: " rm-ax@ . cr then + endof \ Low memory size h# 1a of int-1a endof h# 18 of ." Entering Open Firmware" cr interact endof h# 19 of ." Rebooting" cr bye endof h# 17 of printer-int endof - h# 1c of noshow 0 dispatch-interrupt endof \ Timer bounce vector + h# 1c of noshow! 0 dispatch-interrupt endof \ Timer bounce vector ( default ) ." Interrupt " dup . cr interact endcase ?showint @@ -844,10 +930,13 @@
h# 7c00 constant mbr-base : get-mbr ( -- ) -\ mbr-base h# 3f 1 disk-read-sectors 1 <> abort" Didn't read MBR" - mbr-base 0 1 disk-read-sectors 1 <> abort" Didn't read MBR" +\ mbr-base h# 3f 1 bios-read-sectors 1 <> abort" Didn't read MBR" + mbr-base 0 1 bios-read-sectors 1 <> abort" Didn't read MBR" ;
+\ : #hard-drives ( -- n ) bios-boot-dev# h# 82 = if 2 else 1 then ; +: #hard-drives ( -- n ) 1 ; + : make-bda ( -- ) h# 400 h# 200 erase 'ebda h# 400 erase @@ -863,6 +952,7 @@ \ 46c.l is tick count, 470.b is midnight flag \ 4701.b bit 0x80 is ctrl-break flag h# 1234 h# 472 w! \ Skip memory test + #hard-drives h# 475 c! \ Number of hard drives d# 25 1- h# 484 c! \ Screen max row # d# 16 h# 485 w! \ Character height h# 100.0000 h# 487 l! \ Video RAM size @@ -870,7 +960,7 @@ 1 'ebda w! \ Size of EBDA in KiB \ 'ebda h# 3d + .. HD0 parameter table \ 'ebda h# 4d + .. HD1 parameter table - 1 'ebda h# 70 + c! \ Number of hard disks + #hard-drives 'ebda h# 70 + c! \ Number of hard disks ;
label bounce-timer \ Redirect the timer interrupt through INT 1c @@ -894,11 +984,6 @@ 0 h# 82 w! h# c0 h# 80 w! \ CS = 0, IP = h# c0 = INT 30 ;
-: open-bios-disk ( -- ) - disk-ih if exit then - disk-name open-dev to disk-ih -; - 0 value rm-prepped? : prep-rm ( -- ) rm-prepped? if exit then true to rm-prepped? @@ -915,25 +1000,33 @@ populate-memory-map rm-platform-fixup ; -: close-bios-disk ( -- ) disk-ih ?dup if close-dev 0 to disk-ih then ; -' close-bios-disk to quiesce-devices +: close-bios-disk ( -- ) bios-disk-ih ?dup if close-dev 0 to bios-disk-ih then ; +: close-bios-cdrom ( -- ) bios-cdrom-ih ?dup if close-dev 0 to bios-cdrom-ih then ; +: close-bios-devices ( -- ) close-bios-disk close-bios-cdrom ; +' close-bios-devices to quiesce-devices
+[ifdef] notdef \ Doesn't work with CD-ROM : rm-go ( -- ) prep-rm open-bios-disk get-mbr \ Load boot image at 7c00 - usb-quiet - mbr-base rm-run +\ usb-quiet + init-regs mbr-base rm-run ; +[then]
+0 value mbr-boot? : is-mbr? ( adr len -- flag ) - h# 200 <> if drop false exit then - h# 1fe + w@ h# aa55 = + mbr-boot? 0= if 2drop false exit then + + 2 - le-w@ h# aa55 = ; : init-program ( -- ) loaded is-mbr? if prep-rm - load-base mbr-base h# 200 move + loaded mbr-base swap move +\ init-regs /sregs+gregs erase + \ XXX + bios-boot-dev# init-regs >rm-edx c! \ DL exit then init-program @@ -943,33 +1036,111 @@ : execute-buffer ( adr len -- ) rm-prepped? if ( adr len ) 2drop ( ) - usb-quiet ( ) - mbr-base rm-run ( ) +\ usb-quiet ( ) + init-regs mbr-base rm-run ( ) exit \ Precautionary; rm-run shouldn't return then execute-buffer ;
+0 value boot-sector# +1 value boot-#sectors +: get-cdrom-sector ( sector# -- error? ) + load-base swap 1 (bios-read-sectors) 1 <> +; +: close-bios-ih ( -- ) bios-ih ?dup if close-dev 0 to bios-ih then ; +: bootable-cdrom? ( -- flag ) + drive-/sector h# 800 <> if false exit then + + \ Check Boot Record + h# 11 get-cdrom-sector if false exit then + load-base " "(00)CD001"(01)EL TORITO SPECIFICATION" comp if false exit then + + \ Check Boot Catalog and Section Entry + load-base h# 47 + le-l@ get-cdrom-sector if false exit then + load-base le-l@ 1 <> if false exit then + 0 load-base h# 20 bounds do i le-w@ + /w +loop + h# ffff and if false exit then + load-base 1+ c@ if false exit then \ Must be for x86 platform + + \ Record pointer to boot code + load-base h# 20 + c@ h# 88 <> if false exit then \ Must be bootable + load-base h# 28 + le-l@ to boot-sector# + load-base h# 26 + le-w@ 4 / 1 max to boot-#sectors + + true +; +: set-hd-boot ( dev$ -- ) + open-dev to bios-disk-ih + 0 to boot-sector# 1 to boot-#sectors + h# 80 to bios-boot-dev# + bios-disk-ih to bios-ih +; +: get-one-sector ( dev$ -- error? ) + open-dev to bios-ih + load-base 0 1 (bios-read-sectors) ( #read ) + close-bios-ih ( #read ) + 1 <> ( error? ) +; +: mbr-bootable? ( dev$ -- flag ) + get-one-sector if false exit then + load-base h# 1be + c@ h# 80 = +; + +: ntfs? ( dev$ -- flag ) + get-one-sector if false exit then + load-base 3 + " NTFS " comp 0= ( flag ) +; + +: mbr-load ( adr -- #bytes ) + bios-boot-dev# select-bios-disk + boot-sector# boot-#sectors bios-read-sectors + bios-boot-dev# h# 82 = if h# 800 else h# 200 then * + true to mbr-boot? +; + 0 0 " " " /" begin-package " xp" device-name : open - " sd:1" open-dev ?dup 0= if false exit then ( ih ) - >r - load-base h# 200 " read" r@ $call-method ( #read ) - r> close-dev - h# 200 <> if false exit then - load-base 3 + " NTFS " comp if false exit then - true + " sd:1" ntfs? if " sd:0" set-hd-boot true exit then + false ; : close ; - \ Possible change: load at adr, then have init-program do all - \ the other fixups (prep-rm) and move the MBR to mbr-base - : load ( adr -- 0 ) - open-bios-disk - 0 1 disk-read-sectors h# 200 * - ; + : load ( adr -- nbytes ) mbr-load ; end-package
+0 0 " " " /" begin-package + " xpinstall" device-name + : open + " /usb/disk:0" open-dev ?dup if ( ih ) + to bios-ih + bootable-cdrom? if + bios-ih to bios-cdrom-ih + " sd:0" open-dev ?dup if + to bios-disk-ih + else + ." Can't open SD device. Install from CD-ROM probably won't work." cr + then + h# 82 to bios-boot-dev# + true exit + then + close-bios-ih + then + + \ The device was not a bootable CDROM, but it might be a USB memory stick + + " /usb/disk:0" mbr-bootable? if " /usb/disk:0" set-hd-boot true exit then + + " sd:0" mbr-bootable? if " sd:0" set-hd-boot true exit then + + false + ; + : close ; + : load ( adr -- nbytes ) mbr-load ; +end-package + +: install-xp ( -- ) " /xpinstall" $boot ; + label xx h# 99 # al mov al h# 80 # out begin again end-code here xx - constant /xx : put-xx ( adr -- ) xx swap /xx move ; @@ -1073,3 +1244,27 @@ c;
[then] + +\ LICENSE_BEGIN +\ Copyright (c) 2008 FirmWorks +\ +\ Permission is hereby granted, free of charge, to any person obtaining +\ a copy of this software and associated documentation files (the +\ "Software"), to deal in the Software without restriction, including +\ without limitation the rights to use, copy, modify, merge, publish, +\ distribute, sublicense, and/or sell copies of the Software, and to +\ permit persons to whom the Software is furnished to do so, subject to +\ the following conditions: +\ +\ The above copyright notice and this permission notice shall be +\ included in all copies or substantial portions of the Software. +\ +\ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +\ EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +\ MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +\ NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +\ LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +\ OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +\ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +\ +\ LICENSE_END
Modified: dev/geode/smi.fth =================================================================== --- dev/geode/smi.fth 2008-12-20 07:55:35 UTC (rev 1039) +++ dev/geode/smi.fth 2008-12-20 08:00:00 UTC (rev 1040) @@ -644,6 +644,8 @@ smm-io-port h# fff0 and h# 30 = if smm-io-port h# 20 - to rm-int@ rm-sp la1+ >caller-physical w@ smm-rmeflags w! + \ Bias by -2 to point to INT instruction + rm-sp >caller-physical l@ 2- smm-retaddr l! handle-bios-call smm-rmeflags w@ rm-sp la1+ >caller-physical w! exit @@ -671,8 +673,10 @@ \ require jumping to a given address in real mode.
-1 value rm-entry-adr -: rm-run ( eip -- ) to rm-entry-adr smi ; +0 value rm-regs
+: rm-run ( 'gregs eip -- ) to rm-entry-adr to rm-regs smi ; + : smm-stack-w! ( w offset -- ) smm-sp +smm + w! ; : smm-stack-l! ( l offset -- ) smm-sp +smm + l! ; \ : smi-to-forth ( ip -- ) @@ -943,7 +947,7 @@
: smm-trace ( -- ) ." EBP RETADR CALLTO" cr - smm-ebp + smm-ebp l@ begin ?dup while ( ebp ) dup 8 u.r smm>physical ( padr ) dup la1+ l@ dup 9 u.r .callto cr ( padr ) @@ -997,25 +1001,29 @@ \ to the address "eip" in real mode. This is an implementation \ factor of the "rm-run" mechanism.
-: rm-setup ( eip -- ) - >seg:off 2>r ( r: off seg ) +4 /w* 8 /l* + constant /sregs+gregs
- smm-header h# 30 - - h# 38 l!++ \ SMM_CTL - 0 l!++ \ I/O DATA - 0 l!++ \ I/O ADDRESS, I/O SIZE - h# 938009 l!++ \ SS_FLAGS, SMM Flags - h# ffff l!++ \ CS_LIMIT - r@ 4 lshift l!++ \ CS_BASE - r> h# 9a wljoin l!++ \ CS_FLAGS.CS_INDEX - r> l!++ \ NEXT_IP - 0 l!++ \ CURRENT_IP - h# 10 l!++ \ CR0 - h# 2 l!++ \ EFLAGS - h# 400 l!++ \ DR7 +: rm-setup ( -- ) + rm-entry-adr >seg:off 2>r ( off seg ) + + smm-header h# 30 - ( adr ) + h# 38 l!++ ( adr' ) \ SMM_CTL + 0 l!++ ( adr' ) \ I/O DATA + 0 l!++ ( adr' ) \ I/O ADDRESS, I/O SIZE + h# 938009 l!++ ( adr' ) \ SS_FLAGS, SMM Flags + h# ffff l!++ ( adr' ) \ CS_LIMIT + r@ 4 lshift l!++ ( adr' ) \ CS_BASE + + r> h# 9a wljoin l!++ ( adr' ) \ CS_FLAGS.CS_INDEX + r> l!++ ( adr' ) \ NEXT_IP + 0 l!++ ( adr' ) \ CURRENT_IP + h# 10 l!++ ( adr' ) \ CR0 + h# 2 l!++ ( adr' ) \ EFLAGS + h# 400 l!++ ( adr' ) \ DR7 drop
- smm-sregs 4 /w* erase smm-gregs 8 /l* erase + rm-regs caller-regs /sregs+gregs move + 0 smm-save-esp +smm l!
smm-save-seg +smm @@ -1040,11 +1048,12 @@ : soft-smi ( -- ) smi-debug? if ." SOFT" cr then rm-entry-adr -1 <> if - rm-entry-adr rm-setup + rm-setup -1 to rm-entry-adr exit then
+ smm-pc smm-retaddr l! \ So .caller-regs will work sbpadr @ if sbpadr @ smm>physical smm-pc smm>physical <> if ." Not at SMI breakpoint!" cr
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