diff options
Diffstat (limited to 'qemu/roms/SLOF/slof/fs/packages/disk-label.fs')
| -rw-r--r-- | qemu/roms/SLOF/slof/fs/packages/disk-label.fs | 710 |
1 files changed, 0 insertions, 710 deletions
diff --git a/qemu/roms/SLOF/slof/fs/packages/disk-label.fs b/qemu/roms/SLOF/slof/fs/packages/disk-label.fs deleted file mode 100644 index e034d6408..000000000 --- a/qemu/roms/SLOF/slof/fs/packages/disk-label.fs +++ /dev/null @@ -1,710 +0,0 @@ -\ ***************************************************************************** -\ * Copyright (c) 2004, 2008 IBM Corporation -\ * All rights reserved. -\ * This program and the accompanying materials -\ * are made available under the terms of the BSD License -\ * which accompanies this distribution, and is available at -\ * http://www.opensource.org/licenses/bsd-license.php -\ * -\ * Contributors: -\ * IBM Corporation - initial implementation -\ ****************************************************************************/ - - -\ Set debug-disk-label? to true to get debug messages for the disk-label code. -false VALUE debug-disk-label? - -\ This value defines the maximum number of blocks (512b) to load from a PREP -\ partition. This is required to keep the load time in reasonable limits if the -\ PREP partition becomes big. -\ If we ever want to put a large kernel with initramfs from a PREP partition -\ we might need to increase this value. The default value is 65536 blocks (32MB) -d# 65536 value max-prep-partition-blocks -d# 4096 CONSTANT block-array-size - -s" disk-label" device-name - -0 INSTANCE VALUE partition -0 INSTANCE VALUE part-offset -0 INSTANCE VALUE disk-chrp-boot - -0 INSTANCE VALUE part-start -0 INSTANCE VALUE lpart-start -0 INSTANCE VALUE part-size -0 INSTANCE VALUE dos-logical-partitions - -0 INSTANCE VALUE block-size -0 INSTANCE VALUE block - -0 INSTANCE VALUE args -0 INSTANCE VALUE args-len - -0 INSTANCE VALUE gpt-part-size -0 INSTANCE VALUE seek-pos - - -INSTANCE VARIABLE block# \ variable to store logical sector# -INSTANCE VARIABLE hit# \ partition counter -INSTANCE VARIABLE success-flag - -\ ISO9660 specific information -0ff constant END-OF-DESC -3 constant PARTITION-ID -48 constant VOL-PART-LOC - - -\ DOS partition label (MBR) specific structures - -STRUCT - 1b8 field mbr>boot-loader - /l field mbr>disk-signature - /w field mbr>null - 40 field mbr>partition-table - /w field mbr>magic - -CONSTANT /mbr - -STRUCT - /c field part-entry>active - /c field part-entry>start-head - /c field part-entry>start-sect - /c field part-entry>start-cyl - /c field part-entry>id - /c field part-entry>end-head - /c field part-entry>end-sect - /c field part-entry>end-cyl - /l field part-entry>sector-offset - /l field part-entry>sector-count - -CONSTANT /partition-entry - -STRUCT - 8 field gpt>signature - 4 field gpt>revision - 4 field gpt>header-size - 4 field gpt>header-crc32 - 4 field gpt>reserved - 8 field gpt>current-lba - 8 field gpt>backup-lba - 8 field gpt>first-lba - 8 field gpt>last-lba - 10 field gpt>disk-guid - 8 field gpt>part-entry-lba - 4 field gpt>num-part-entry - 4 field gpt>part-entry-size - 4 field gpt>part-array-crc32 - 1a4 field gpt>reserved - -CONSTANT /gpt-header - -STRUCT - 10 field gpt-part-entry>part-type-guid - 10 field gpt-part-entry>part-guid - 8 field gpt-part-entry>first-lba - 8 field gpt-part-entry>last-lba - 8 field gpt-part-entry>attribute - 48 field gpt-part-entry>part-name - -CONSTANT /gpt-part-entry - -\ Defined by IEEE 1275-1994 (3.8.1) - -: offset ( d.rel -- d.abs ) - part-offset xlsplit d+ -; - -: seek ( pos.lo pos.hi -- status ) - offset - debug-disk-label? IF 2dup ." seek-parent: pos.hi=0x" u. ." pos.lo=0x" u. THEN - s" seek" $call-parent - debug-disk-label? IF dup ." status=" . cr THEN -; - -: read ( addr len -- actual ) - debug-disk-label? IF 2dup swap ." read-parent: addr=0x" u. ." len=" .d THEN - s" read" $call-parent - debug-disk-label? IF dup ." actual=" .d cr THEN -; - - -\ read sector to array "block" -: read-sector ( sector-number -- ) - \ block-size is 0x200 on disks, 0x800 on cdrom drives - block-size * 0 seek drop \ seek to sector - block block-size read drop \ read sector -; - -: (.part-entry) ( part-entry ) - cr ." part-entry>active: " dup part-entry>active c@ .d - cr ." part-entry>start-head: " dup part-entry>start-head c@ .d - cr ." part-entry>start-sect: " dup part-entry>start-sect c@ .d - cr ." part-entry>start-cyl: " dup part-entry>start-cyl c@ .d - cr ." part-entry>id: " dup part-entry>id c@ .d - cr ." part-entry>end-head: " dup part-entry>end-head c@ .d - cr ." part-entry>end-sect: " dup part-entry>end-sect c@ .d - cr ." part-entry>end-cyl: " dup part-entry>end-cyl c@ .d - cr ." part-entry>sector-offset: " dup part-entry>sector-offset l@-le .d - cr ." part-entry>sector-count: " dup part-entry>sector-count l@-le .d - cr -; - -: (.name) r@ begin cell - dup @ <colon> = UNTIL xt>name cr type space ; - -: init-block ( -- ) - s" block-size" ['] $call-parent CATCH IF ABORT" parent has no block-size." THEN - to block-size - block-array-size alloc-mem - dup block-array-size erase - to block - debug-disk-label? IF - ." init-block: block-size=" block-size .d ." block=0x" block u. cr - THEN -; - -: partition>part-entry ( partition -- part-entry ) - 1- /partition-entry * block mbr>partition-table + -; - -: partition>start-sector ( partition -- sector-offset ) - partition>part-entry part-entry>sector-offset l@-le -; - -\ This word returns true if the currently loaded block has _NO_ MBR magic -: no-mbr? ( -- true|false ) - 0 read-sector - 1 partition>part-entry part-entry>id c@ ee = IF TRUE EXIT THEN \ GPT partition found - block mbr>magic w@-le aa55 <> -; - -\ This word returns true if the currently loaded block has _NO_ GPT partition id -: no-gpt? ( -- true|false ) - 0 read-sector - 1 partition>part-entry part-entry>id c@ ee <> IF true EXIT THEN - block mbr>magic w@-le aa55 <> -; - -: pc-extended-partition? ( part-entry-addr -- true|false ) - part-entry>id c@ ( id ) - dup 5 = swap ( true|false id ) - dup f = swap ( true|false true|false id ) - 85 = ( true|false true|false true|false ) - or or ( true|false ) -; - -: count-dos-logical-partitions ( -- #logical-partitions ) - no-mbr? IF 0 EXIT THEN - 0 5 1 DO ( current ) - i partition>part-entry ( current part-entry ) - dup pc-extended-partition? IF - part-entry>sector-offset l@-le ( current sector ) - dup to part-start to lpart-start ( current ) - BEGIN - part-start read-sector \ read EBR - 1 partition>start-sector IF - \ ." Logical Partition found at " part-start .d cr - 1+ - THEN \ another logical partition - 2 partition>start-sector - ( current relative-sector ) - ?dup IF lpart-start + to part-start false ELSE true THEN - UNTIL - ELSE - drop - THEN - LOOP -; - -: (get-dos-partition-params) ( ext-part-start part-entry -- offset count active? id ) - dup part-entry>sector-offset l@-le rot + swap ( offset part-entry ) - dup part-entry>sector-count l@-le swap ( offset count part-entry ) - dup part-entry>active c@ 80 = swap ( offset count active? part-entry ) - part-entry>id c@ ( offset count active? id ) -; - -: find-dos-partition ( partition# -- false | offset count active? id true ) - to partition 0 to part-start 0 to part-offset - - \ no negative partitions - partition 0<= IF 0 to partition false EXIT THEN - - \ load MBR and check it - no-mbr? IF 0 to partition false EXIT THEN - - partition 4 <= IF \ Is this a primary partition? - 0 partition partition>part-entry - (get-dos-partition-params) - \ FIXME sanity checks? - true EXIT - ELSE - partition 4 - 0 5 1 DO ( logical-partition current ) - i partition>part-entry ( log-part current part-entry ) - dup pc-extended-partition? IF - part-entry>sector-offset l@-le ( log-part current sector ) - dup to part-start to lpart-start ( log-part current ) - BEGIN - part-start read-sector \ read EBR - 1 partition>start-sector IF \ first partition entry - 1+ 2dup = IF ( log-part current ) - 2drop - part-start 1 partition>part-entry - (get-dos-partition-params) - true UNLOOP EXIT - THEN - 2 partition>start-sector - ( log-part current relative-sector ) - - ?dup IF lpart-start + to part-start false ELSE true THEN - ELSE - true - THEN - UNTIL - ELSE - drop - THEN - LOOP - 2drop false - THEN -; - -: try-dos-partition ( -- okay? ) - \ Read partition table and check magic. - no-mbr? IF - debug-disk-label? IF cr ." No DOS disk-label found." cr THEN - false EXIT - THEN - - count-dos-logical-partitions TO dos-logical-partitions - - debug-disk-label? IF - ." Found " dos-logical-partitions .d ." logical partitions" cr - ." Partition = " partition .d cr - THEN - - partition 1 5 dos-logical-partitions + - within 0= IF - cr ." Partition # not 1-" 4 dos-logical-partitions + . cr false EXIT - THEN - - \ Could/should check for valid partition here... the magic is not enough really. - - \ Get the partition offset. - - partition find-dos-partition IF - ( offset count active? id ) - 2drop - to part-size - block-size * to part-offset - true - ELSE - false - THEN -; - -\ Check for an ISO-9660 filesystem on the disk -\ : try-iso9660-partition ( -- true|false ) -\ implement me if you can ;-) -\ ; - - -\ Check for an ISO-9660 filesystem on the disk -\ (cf. CHRP IEEE 1275 spec., chapter 11.1.2.3) -: has-iso9660-filesystem ( -- TRUE|FALSE ) - \ Seek to the beginning of logical 2048-byte sector 16 - \ refer to Chapter C.11.1 in PAPR 2.0 Spec - \ was: 10 read-sector, but this might cause trouble if you - \ try booting an ISO image from a device with 512b sectors. - 10 800 * 0 seek drop \ seek to sector - block 800 read drop \ read sector - \ Check for CD-ROM volume magic: - block c@ 1 = - block 1+ 5 s" CD001" str= - and - dup IF 800 to block-size THEN -; - - -\ Load from first active DOS boot partition. - -: fat-bootblock? ( addr -- flag ) - \ byte 0-2 of the bootblock is a jump instruction in - \ all FAT filesystems. - \ e9 and eb are jump instructions in x86 assembler. - dup c@ e9 = IF drop true EXIT THEN - dup c@ eb = swap 2+ c@ 90 = and -; - -\ NOTE: block-size is always 512 bytes for DOS partition tables. - -: load-from-dos-boot-partition ( addr -- size ) - no-mbr? IF drop FALSE EXIT THEN \ read MBR and check for DOS disk-label magic - - count-dos-logical-partitions TO dos-logical-partitions - - debug-disk-label? IF - ." Found " dos-logical-partitions .d ." logical partitions" cr - ." Partition = " partition .d cr - THEN - - \ Now walk through the partitions: - 5 dos-logical-partitions + 1 DO - \ ." checking partition " i . - i find-dos-partition IF ( addr offset count active? id ) - 41 = and ( addr offset count prep-boot-part? ) - IF ( addr offset count ) - max-prep-partition-blocks min \ reduce load size - swap ( addr count offset ) - block-size * to part-offset - 0 0 seek drop ( addr offset ) - block-size * read ( size ) - UNLOOP EXIT - ELSE - 2drop ( addr ) - THEN - THEN - LOOP - drop 0 -; - -\ Check for GPT PReP partition GUID. Only first 3 blocks are -\ byte-swapped treating last two blocks as contigous for simplifying -\ comparison -9E1A2D38 CONSTANT GPT-PREP-PARTITION-1 -C612 CONSTANT GPT-PREP-PARTITION-2 -4316 CONSTANT GPT-PREP-PARTITION-3 -AA268B49521E5A8B CONSTANT GPT-PREP-PARTITION-4 - -: gpt-prep-partition? ( -- true|false ) - block gpt-part-entry>part-type-guid - dup l@-le GPT-PREP-PARTITION-1 <> IF drop false EXIT THEN - dup 4 + w@-le GPT-PREP-PARTITION-2 <> IF drop false EXIT THEN - dup 6 + w@-le GPT-PREP-PARTITION-3 <> IF drop false EXIT THEN - 8 + x@ GPT-PREP-PARTITION-4 = -; - -\ Check for GPT MSFT BASIC DATA GUID - fat based -EBD0A0A2 CONSTANT GPT-BASIC-DATA-PARTITION-1 -B9E5 CONSTANT GPT-BASIC-DATA-PARTITION-2 -4433 CONSTANT GPT-BASIC-DATA-PARTITION-3 -87C068B6B72699C7 CONSTANT GPT-BASIC-DATA-PARTITION-4 - -: gpt-basic-data-partition? ( -- true|false ) - block gpt-part-entry>part-type-guid - dup l@-le GPT-BASIC-DATA-PARTITION-1 <> IF drop false EXIT THEN - dup 4 + w@-le GPT-BASIC-DATA-PARTITION-2 <> IF drop false EXIT THEN - dup 6 + w@-le GPT-BASIC-DATA-PARTITION-3 <> IF drop false EXIT THEN - 8 + x@ GPT-BASIC-DATA-PARTITION-4 = -; - -\ -\ GPT Signature -\ ("EFI PART", 45h 46h 49h 20h 50h 41h 52h 54h) -\ -4546492050415254 CONSTANT GPT-SIGNATURE - -\ The routine checks whether the protective MBR has GPT ID and then -\ reads the gpt data from the sector. Also set the seek position and -\ the partition size used in caller routines. - -: get-gpt-partition ( -- true|false ) - no-gpt? IF false EXIT THEN - debug-disk-label? IF cr ." GPT partition found " cr THEN - 1 read-sector - block gpt>part-entry-lba x@-le - block-size * to seek-pos - block gpt>part-entry-size l@-le to gpt-part-size - gpt-part-size block-array-size > IF - cr ." GPT part size exceeds buffer allocated " cr - false exit - THEN - block gpt>signature x@ GPT-SIGNATURE = -; - -: load-from-gpt-prep-partition ( addr -- size ) - get-gpt-partition 0= IF false EXIT THEN - block gpt>num-part-entry l@-le dup 0= IF false exit THEN - 1+ 1 ?DO - seek-pos 0 seek drop - block gpt-part-size read drop gpt-prep-partition? IF - debug-disk-label? IF ." GPT PReP partition found " cr THEN - block gpt-part-entry>first-lba x@-le ( addr first-lba ) - block gpt-part-entry>last-lba x@-le ( addr first-lba last-lba) - over - 1+ ( addr first-lba blocks ) - swap ( addr blocks first-lba ) - block-size * to part-offset ( addr blocks ) - 0 0 seek drop ( addr blocks ) - block-size * read ( size ) - UNLOOP EXIT - THEN - seek-pos gpt-part-size + to seek-pos - LOOP - false -; - -: try-gpt-dos-partition ( -- true|false ) - get-gpt-partition 0= IF false EXIT THEN - block gpt>num-part-entry l@-le dup 0= IF false EXIT THEN - 1+ 1 ?DO - seek-pos 0 seek drop - block gpt-part-size read drop - gpt-basic-data-partition? IF - debug-disk-label? IF ." GPT BASIC DATA partition found " cr THEN - block gpt-part-entry>first-lba x@-le ( first-lba ) - dup to part-start ( first-lba ) - block gpt-part-entry>last-lba x@-le ( first-lba last-lba ) - over - 1+ ( first-lba s1 ) - block-size * to part-size ( first-lba ) - block-size * to part-offset ( ) - 0 0 seek drop - block block-size read drop - block fat-bootblock? ( true|false ) - UNLOOP EXIT - THEN - seek-pos gpt-part-size + to seek-pos - LOOP - false -; - -\ Extract the boot loader path from a bootinfo.txt file -\ In: address and length of buffer where the bootinfo.txt has been loaded to. -\ Out: string address and length of the boot loader (within the input buffer) -\ or a string with length = 0 when parsing failed. - -\ Here is a sample bootinfo file: -\ <chrp-boot> -\ <description>Linux Distribution</description> -\ <os-name>Linux</os-name> -\ <boot-script>boot &device;:1,\boot\yaboot.ibm</boot-script> -\ <icon size=64,64 color-space=3,3,2> -\ <bitmap>[..]</bitmap> -\ </icon> -\ </chrp-boot> - -: parse-bootinfo-txt ( addr len -- str len ) - 2dup s" <boot-script>" find-substr ( addr len pos1 ) - 2dup = IF - \ String not found - 3drop 0 0 EXIT - THEN - dup >r - swap r> + swap ( addr1 len1 ) - - 2dup s" &device;:" find-substr ( addr1 len1 posdev ) - 2dup = IF - 3drop 0 0 EXIT - THEN - 9 + \ Skip the "&device;:" string - dup >r - swap r> + swap ( addr2 len2 ) - 2dup s" </boot-script>" find-substr nip ( addr2 len3 ) - - debug-disk-label? IF - ." Extracted boot loader from bootinfo.txt: '" - 2dup type ." '" cr - THEN -; - -\ Try to load \ppc\bootinfo.txt from the disk (used mainly on CD-ROMs), and if -\ available, get the boot loader path from this file and load it. -\ See the "CHRP system binding to IEEE 1275" specification for more information -\ about bootinfo.txt. An example file can be found in the comment of -\ parse-bootinfo-txt ( addr len -- str len ) - -: load-chrp-boot-file ( addr -- size ) - \ Create bootinfo.txt path name and load that file: - my-parent instance>path - disk-chrp-boot @ 1 = IF - s" :1,\ppc\bootinfo.txt" $cat strdup ( addr str len ) - ELSE - s" :\ppc\bootinfo.txt" $cat strdup ( addr str len ) - THEN - open-dev dup 0= IF 2drop 0 EXIT THEN - >r dup ( addr addr R:ihandle ) - dup s" load" r@ $call-method ( addr addr size R:ihandle ) - r> close-dev ( addr addr size ) - - \ Now parse the information from bootinfo.txt: - parse-bootinfo-txt ( addr fnstr fnlen ) - dup 0= IF 3drop 0 EXIT THEN - \ Does the string contain parameters (i.e. a white space)? - 2dup 20 findchar IF - ( addr fnstr fnlen offset ) - >r 2dup r@ - 1- swap r@ + 1+ swap ( addr fnstr fnlen pstr plen R: offset ) - encode-string s" bootargs" set-chosen - drop r> - THEN - - \ Create the full path to the boot loader: - my-parent instance>path ( addr fnstr fnlen nstr nlen ) - s" :" $cat 2swap $cat strdup ( addr str len ) - \ Update the bootpath: - 2dup encode-string s" bootpath" set-chosen - \ And finally load the boot loader itself: - open-dev dup 0= IF ." failed to load CHRP boot loader." 2drop 0 EXIT THEN - >r s" load" r@ $call-method ( size R:ihandle ) - r> close-dev ( size ) -; - -\ load from a bootable partition -: load-from-boot-partition ( addr -- size ) - debug-disk-label? IF ." Trying DOS boot " .s cr THEN - dup load-from-dos-boot-partition ?dup 0 <> IF nip EXIT THEN - - debug-disk-label? IF ." Trying CHRP boot " .s cr THEN - 1 disk-chrp-boot ! - dup load-chrp-boot-file ?dup 0 <> IF nip EXIT THEN - 0 disk-chrp-boot ! - - debug-disk-label? IF ." Trying GPT boot " .s cr THEN - load-from-gpt-prep-partition - \ More boot partition formats ... -; - -\ parse partition number from my-args - -\ my-args has the following format -\ [<partition>[,<path>]] - -\ | example my-args | example boot command | -\ +------------------+---------------------------+ -\ | 1,\boot\vmlinuz | boot disk:1,\boot\vmlinuz | -\ | 2 | boot disk:2 | - -\ 0 means the whole disk, this is the same behavior -\ as if no partition is specified (yaboot wants this). - -: parse-partition ( -- okay? ) - 0 to partition - 0 to part-offset - 0 to part-size - - my-args to args-len to args - - debug-disk-label? IF - cr ." disk-label parse-partition: my-args=" my-args type cr - THEN - - \ Called without arguments? - args-len 0 = IF true EXIT THEN - - \ Check for "full disk" arguments. - my-args [char] , findchar 0= IF \ no comma? - args c@ isdigit not IF \ ... and not a partition number? - true EXIT \ ... then it's not a partition we can parse - THEN - ELSE - drop - THEN - my-args [char] , split to args-len to args - dup 0= IF 2drop true EXIT THEN \ no first argument - - \ Check partition #. - base @ >r decimal $number r> base ! - IF cr ." Not a partition #" false EXIT THEN - - \ Store part #, done. - to partition - true -; - - -\ try-files and try-partitions - -: (interpose-filesystem) ( str len -- ) - find-package IF args args-len rot interpose THEN -; - -: try-dos-files ( -- found? ) - no-mbr? IF false EXIT THEN - - block fat-bootblock? 0= IF false EXIT THEN - s" fat-files" (interpose-filesystem) - true -; - -: try-ext2-files ( -- found? ) - 2 read-sector \ read first superblock - block d# 56 + w@-le \ fetch s_magic - ef53 <> IF false EXIT THEN \ s_magic found? - s" ext2-files" (interpose-filesystem) - true -; - - -: try-iso9660-files - has-iso9660-filesystem 0= IF false exit THEN - s" iso-9660" (interpose-filesystem) - true -; - -: try-files ( -- found? ) - \ If no path, then full disk. - args-len 0= IF true EXIT THEN - - try-dos-files IF true EXIT THEN - try-ext2-files IF true EXIT THEN - try-iso9660-files IF true EXIT THEN - - \ ... more filesystem types here ... - - false -; - -: try-partitions ( -- found? ) - try-dos-partition IF try-files EXIT THEN - try-gpt-dos-partition IF try-files EXIT THEN - \ try-iso9660-partition IF try-files EXIT THEN - \ ... more partition types here... - false -; - -\ Interface functions for disk-label package -\ as defined by IEEE 1275-1994 3.8.1 - -: close ( -- ) - debug-disk-label? IF ." Closing disk-label: block=0x" block u. ." block-size=" block-size .d cr THEN - block block-array-size free-mem -; - - -: open ( -- true|false ) - init-block - - parse-partition 0= IF - close - false EXIT - THEN - - partition IF - try-partitions - ELSE - try-files - THEN - dup 0= IF debug-disk-label? IF ." not found." cr THEN close THEN \ free memory again -; - - -\ Boot & Load w/o arguments is assumed to be boot from boot partition - -: load ( addr -- size ) - debug-disk-label? IF - ." load: " dup u. cr - THEN - - args-len IF - TRUE ABORT" Load done w/o filesystem" - ELSE - partition IF - 0 0 seek drop - part-size IF - part-size max-prep-partition-blocks min \ Load size - ELSE - max-prep-partition-blocks - THEN - 200 * read - ELSE - has-iso9660-filesystem IF - dup load-chrp-boot-file ?dup 0 > IF nip EXIT THEN - THEN - load-from-boot-partition - dup 0= ABORT" No boot partition found" - THEN - THEN -; |