;-*- Mode:LISP; Package:LAMBDA; Base:8; readtable: ZL -*- ;This file is for the LAMBDA and EXPLORER only!! ; ** (c) Copyright 1983 Lisp Machine Inc ** (DEFCONST UC-INITIALIZATION '( (LOCALITY A-MEM) a-band-saved-crc (0) a-band-crc-accumulator (0) a-band-compute-crc-flag (0) a-band-crc-tem (0) (locality i-mem) END-WIRED-UCODE ;All after here is "paged out" after initialization is complete. ;(However, unlike pagable ucode it does get loaded by the PROM because it lives below 36000). ;Code after here should not be used at all once LISP is started unless a ;TURN-PAGABLE-UCODE-OFF-AND-RESTORE-INITIALIZATION operation is done ; (ie, just before a DISK-SAVE, etc). ;of course, on the explorer, this is always available... xdisk-save ;get here from DISK-SAVE (call invalidate-cons-caches) ;try to preserve freshly consed stuff. #+lambda((RG-MODE) ANDCA RG-MODE (A-CONSTANT (BYTE-MASK (BYTE-FIELD 1 27.)))) ;disable interrupts #+exp ((mcr) andca mcr (a-constant 1_15.)) ((M-4) PDL-POP) ((M-4) DPB PDL-POP (BYTE-FIELD 20 20) A-4) ((M-S) Q-POINTER PDL-POP) ((MD) (A-CONSTANT 1000)) ;store code so this band known to be in compressed format (JUMP-IF-BIT-CLEAR BOXED-SIGN-BIT M-S DISK-SAVE-1) (call trap) (error-table incremental-disk-save-not-supported) DISK-SAVE-1 ((VMA-START-WRITE) (A-CONSTANT (EVAL (+ 400 %SYS-COM-BAND-FORMAT)))) ;before swapout (ILLOP-IF-PAGE-FAULT) ; so it gets to saved image on disk ;;set valid size to 0 for crc computation - will be updated after save is finished ((MD) setz) ((VMA-START-WRITE) (A-CONSTANT (EVAL (PLUS 400 %SYS-COM-VALID-SIZE)))) (ILLOP-IF-PAGE-FAULT) ((md) (a-constant (byte-value q-data-type dtp-fix))) ((vma-start-write) (a-constant (eval (+ 400 %sys-com-band-crc)))) (illop-if-page-fault) (CALL SWAP-OUT-ALL-PAGES) ;Make sure disk has valid data for all pages. #+exp ((field a-destination-multiplier (plus 1_12. 1777)) m-4) (CALL COLD-READ-LABEL) ;Find the specified partition, and PAGE. ;cold-read-label no longer clobbers memory ((a-band-crc-accumulator) setz) ;Set up args for DISK-SAVE-REGIONWISE in case we go straight there., ((M-K) A-ZERO) ((M-AP) M-ZERO) ;region to hack. ((M-Q) M-I) (CALL DISK-SAVE-REGIONWISE-SUBR) (JUMP COLD-SWAP-IN-after-disk-save) ;Physical core now clobbered, so re-swap-in. ;M-I and M-J have origin and size of band to dump into. ;M-Q has disk address, within band, to start writing at, ; and M-AP has region number of first region to dump. ;M-S has size of phys memory in words. ;M-K used to have size of page bitmap in bits for incremental - now always 0 ;A-V-REGION-ORGIN, -FREE-POINTER, and -BITS ;are valid, and those arrays are still in main memory and wont get clobbered by calling ;DISK-COPY-SECTION. DISK-SAVE-REGIONWISE-SUBR ((A-COPY-BAND-TEM) ADD M-I A-J) ;better not try to write above here. ((A-COPY-BAND-TEM1) M-I) ;Starting track for dest. band. DISK-SR-1 ((VMA-START-READ) ADD M-AP A-V-REGION-BITS) (ILLOP-IF-PAGE-FAULT) ((M-TEM) LDB (LISP-BYTE %%REGION-SPACE-TYPE) MD) (JUMP-EQUAL M-TEM A-ZERO DISK-SR-2) ;free region, forget it. ((VMA-START-READ) ADD M-AP A-V-REGION-ORIGIN) (ILLOP-IF-PAGE-FAULT) ((M-I) LDB VMA-PAGE-ADDR-PART MD) ((M-I) ADD M-I A-DISK-OFFSET) ((VMA-START-READ) ADD M-AP A-V-REGION-FREE-POINTER) (ILLOP-IF-PAGE-FAULT) ((MD) ADD MD (A-CONSTANT 377)) ((M-J) LDB VMA-PAGE-ADDR-PART MD) ((M-TEM) ADD M-Q A-J) (CALL-GREATER-OR-EQUAL M-TEM A-COPY-BAND-TEM BAND-NOT-BIG-ENOUGH) ((M-TEM) ADD M-I A-J) ((M-TEM) SUB M-TEM A-DISK-OFFSET) (CALL-GREATER-OR-EQUAL M-TEM A-DISK-MAXIMUM ILLOP) ;Band not within paging partition (error-table crash "Band seems to overflow paging partition") (CALL DISK-SAVE-REGION) DISK-SR-2 ((vma-start-read) (a-constant (eval (+ 400 %sys-com-number-regions)))) (illop-if-page-fault) ((m-tem) q-pointer md) ((M-AP) ADD M-AP (A-CONSTANT 1)) (JUMP-LESS-THAN M-AP A-TEM DISK-SR-1) ((m-1) m+a+1 m-zero a-copy-band-tem1) ;second page of saved band ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-2) (A-CONSTANT 1)) ;one page ((M-B) (A-CONSTANT copy-buffer-origin)) ;to a scratch area - just like disk-restore ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) (CALL COLD-DISK-READ) ;;done saving regions - now update two words in system-communication-area ((M-Q) SUB M-Q A-COPY-BAND-TEM1) ((MD) DPB M-Q (BYTE-FIELD 30 10) A-ZERO) ;Record active size of band. ((VMA-START-WRITE) (A-CONSTANT (EVAL (PLUS 400 %SYS-COM-VALID-SIZE)))) (ILLOP-IF-PAGE-FAULT) ((vma) (a-constant copy-buffer-origin)) ((vma-start-write) add vma (a-constant (eval %sys-com-valid-size))) (illop-if-page-fault) ((md) a-band-crc-accumulator) ((md) ldb (byte 16. 0) md (a-constant (plus (byte-value q-data-type dtp-fix) (byte-value (byte-field 8 16.) 1)))) ((vma-start-write) (a-constant (eval (plus 400 %sys-com-band-crc)))) (illop-if-page-fault) ((vma) (a-constant copy-buffer-origin)) ((vma-start-write) add vma (a-constant (eval %sys-com-band-crc))) (illop-if-page-fault) ((m-1) m+a+1 m-zero a-copy-band-tem1) ;second page of saved band ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-2) (A-CONSTANT 1)) ;one page ((M-B) (A-CONSTANT copy-buffer-origin)) ;to a scratch area - just like disk-restore ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) (call COLD-DISK-WRITE) ;write it on the band. (popj) ;M-I and M-J have origin and size, on disk in the PAGE partition, of a region. ;M-Q has disk address to copy to in band being dumped. DISK-SAVE-REGION DISK-SAVE-SECTION ((M-TEM) ADD M-Q A-J) (CALL-GREATER-OR-EQUAL M-TEM A-COPY-BAND-TEM BAND-NOT-BIG-ENOUGH) (JUMP DISK-COPY-SECTION-from-page-to-lod) BAND-NOT-BIG-ENOUGH ;Destination band not big enuf. This should have been detected (CALL ILLOP) ; before now. If you proceed this, it should swap your band (error-table crash "Destination band not big enough") (POPJ) ; back in. ;Make sure all pages are correct on disk. ;Requires that M-S contain the number of words of physical main memory. ;Has the side-effect of destroying the page hash table. ;For %DISK-SAVE, that doesn't matter since we just re-boot anyway. SWAP-OUT-ALL-PAGES ((C-PDL-BUFFER-POINTER-PUSH) M-S) ((M-S) LDB (BYTE-FIELD 17. 8) M-S A-ZERO) ;Number of physical pages. ((VMA-START-READ) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-WIRED-SIZE)))) (ILLOP-IF-PAGE-FAULT) ((M-T) (BYTE-FIELD 17. 8) READ-MEMORY-DATA) ;Number of wired pages. ((C-PDL-BUFFER-POINTER-PUSH) M-T) ((M-T) SUB M-S (A-CONSTANT 1)) ;First page to do is highest in core ;Swap out all unwired pages first, using %DELETE-PHYSICAL-PAGE and updating the PHT normally. SWAP-OUT-ALL-PAGES-1 ((C-PDL-BUFFER-POINTER-PUSH) M-T) ;Save current page ((C-PDL-BUFFER-POINTER-PUSH) DPB M-T VMA-PAGE-ADDR-PART A-ZERO) ;arg (CALL XDPPG) ((M-T) SUB C-PDL-BUFFER-POINTER-POP (A-CONSTANT 1)) (JUMP-GREATER-OR-EQUAL M-T A-ZERO SWAP-OUT-ALL-PAGES-1) ;Now swap out all the wired pages ((M-A) (A-CONSTANT WORDS-TO-DIRECT-MAP-DURING-BOOTSTRAP)) ;Direct-map the first 64K (CALL INITIAL-MAP-A) ((M-1) A-DISK-OFFSET) ;Disk address of virtual location 0 ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-2) C-PDL-BUFFER-POINTER-POP) ;Number of wired pages ((M-B) M-ZERO) ;Physical memory location 0 ((M-C) DPB M-2 VMA-PAGE-ADDR-PART A-ZERO) ;Put CCW list in high memory ((M-S) C-PDL-BUFFER-POINTER-POP) (JUMP COLD-DISK-WRITE) (begin-comment) (end-comment) xdisk-restore ;from DISK-RESTORE-1 #+lambda((RG-MODE) ANDCA RG-MODE (A-CONSTANT (PLUS (BYTE-MASK (BYTE-FIELD 1 27.)) ;disable interrupts (BYTE-MASK (BYTE-FIELD 1 30.))))) ;set 25 bit mode. ;#+exp ((mcr) andca mcr (a-constant 1_15.)) ;only disable interrupts on explorer #-exp (begin-comment) ;;the explorer bootstrap prom seems to leave some interrupts enabled ;;with the vectors pointing at physical memory! ;;since we don't have code to reinitialized all of the devices, we just ;;make them all "safe" by pointing them to 0 ;;first clear 16 interrupt vectors on SI board ((vma) (a-constant #xf5f00000)) ((md) setz) reset-interrupts-for-explorer ((vma-start-write-unmapped) vma) (no-op) ((vma) add vma (a-constant 4)) (jump-not-equal vma (a-constant #xf5f00040) reset-interrupts-for-explorer) ;;nupi special event interrupt ((vma-start-write-unmapped) (a-constant #xf2e00004)) (no-op) ;;ethernet event interrupt ((vma-start-write-unmapped) (a-constant #xf000A000)) (no-op) ((mcr) (a-constant (eval (+ (dpb 1 (byte 1 8.) 0) ;memory cycle enable (dpb 0 (byte 1 9.) 0) ;forced access request (dpb 0 (byte 1 10.) 0) ;bus lock (dpb 1 (byte 1 11.) 0) ;prom disable (dpb 0 (byte 1 12.) 0) ;halt on parity errors (dpb 0 (byte 1 13.) 0) ;abort on bus error (dpb 0 (byte 1 14.) 0) ;sequence break request (dpb 0 (byte 1 15.) 0) ;interrupt enable (dpb 1 (byte 1 20.) 0) ;power fail and warm boot enable (dpb 0 (byte 1 21.) 0) ;nubus reset (dpb 0 (byte 1 22.) 0) ;need fetch (dpb 0 (byte 1 23.) 0) ;loop on self test (dpb 0 (byte 1 24.) 0) ;enable MISC0 (dpb 0 (byte 1 25.) 0) ;enable MISC1 (dpb 0 (byte 1 26.) 0) ;macro chaining enable )))) #-exp (end-comment) (call invalidate-cons-caches) ;try to avoid various screws. ;;get-configuration either sets all of the a-pmh-* and a-pmo-* variables, (call get-configuration) #+LAMBDA(call flush-cache) (CALL-XCT-NEXT COLD-WIRE-MAP) ;64K to be direct-mapped ((WRITE-MEMORY-DATA) (A-CONSTANT WORDS-TO-DIRECT-MAP-DURING-BOOTSTRAP)) ;; Wire enough for all wired pages + disk mapping registers needed to read them in. ((A-DISK-BUSY) A-ZERO) ;used to call reset-machine ((M-S) A-PMH-0) ;Determine size of main memory ((M-S) ADD M-S A-PMH-1) ((M-S) ADD M-S A-PMH-2) ((M-S) ADD M-S A-PMH-3) ((M-S) ADD M-S A-PMH-4) ((M-S) ADD M-S A-PMH-5) ((M-S) ADD M-S A-PMH-6) ((M-S) ADD M-S A-PMH-7) ((M-S) ADD M-S A-PMH-8) ((M-S) ADD M-S A-PMH-9) ((M-S) DPB M-S (BYTE-FIELD 17. 8) A-ZERO) ;M-S now has the first non-existent location #+lambda(CALL COLD-READ-MINI-LABEL) (CALL COLD-READ-LABEL) ;Find PAGE partition and specified partition. #+exp (Call Add-Boot-Info-to-Crash-Record) ;Add ucode band and load band now that they are known ((M-1) M-I) ;From start of source band. ((m-tem) a-disk-lod-partition-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((a-band-crc-accumulator) setz) ((M-2) (A-CONSTANT 3)) ;Core pages 0, 1, and 2 ((M-B) (A-CONSTANT copy-buffer-origin)) ;to page 3 of memory, will copy to 0 ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) ;CCW list after MICRO-CODE-SYMBOL-AREA (CALL COLD-DISK-READ) ((m-1) setz) ((m-2) (a-constant copy-buffer-origin)) copy-first-three-pages-loop ((vma-start-read) m-2) (illop-if-page-fault) ((vma-start-write) m-1) (illop-if-page-fault) ((m-1) add m-1 (a-constant 1)) ((m-2) add m-2 (a-constant 1)) (jump-not-equal m-1 (a-constant (eval (* page-size 3))) copy-first-three-pages-loop) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-band-crc)))) ((a-band-saved-crc) q-pointer md) ((md) setz) ((vma) (a-constant copy-buffer-origin)) ((vma-start-write) add vma (a-constant (eval (+ 400 %sys-com-valid-size)))) (illop-if-page-fault) ((md) (a-constant (byte-value q-data-type dtp-fix))) ((vma) (a-constant copy-buffer-origin)) ((vma-start-write) add vma (a-constant (eval (+ 400 %sys-com-band-crc)))) (illop-if-page-fault) ; ((m-1) (a-constant copy-buffer-origin)) ; ((m-2) (a-constant (eval (+ page-size (length system-communication-area-qs))))) ; (call compute-region-crc) ; ((m-1) (a-constant copy-buffer-origin)) ; ((m-1) add m-1 (a-constant (eval (* 2 page-size)))) ; ((m-2) (a-constant (eval page-size))) ; (call compute-region-crc) ((m-1) (a-constant copy-buffer-origin)) ((m-2) (a-constant (eval (* 3 page-size)))) (call compute-region-crc) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-BAND-FORMAT)))) (JUMP-EQUAL MD (A-CONSTANT 1000) DISK-RESTORE-REGIONWISE) ;compressed partition. (JUMP-EQUAL MD (A-CONSTANT 1001) illop) ;incremental partition -no longer supported ;Non-compressed band (must be a cold-load band, I think). (CALL-XCT-NEXT PHYS-MEM-READ) ;Get useful size of partition, in words ((VMA) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-VALID-SIZE)))) ((M-D) VMA-PAGE-ADDR-PART MD) ;Number of valid pages (JUMP-LESS-OR-EQUAL M-J A-D DISK-COPY-PART-1) ((M-J) M-D) ;M-J is number of pages to copy (min sizes) DISK-COPY-PART-1 (CALL-GREATER-THAN M-J A-R ILLOP) ;Not enough room in destination partition (error-table crash "Destination band not big enough") (CALL DISK-COPY-SECTION-from-lod-to-page) (JUMP COLD-SWAP-IN) ;starting vadr in M-1 ;number of words in M-2 ;clobbers M-1, M-2, VMA, MD ;registers also available: M-B, M-T compute-region-crc (popj-equal m-2 a-zero) ((vma-start-read) m-1) (illop-if-page-fault) ((md) ldb (byte 16. 0) md) (call compute-region-crc-1) ((vma-start-read) m-1) (illop-if-page-fault) ((md) ldb (byte 16. 16.) md) (call compute-region-crc-1) ((m-1) add m-1 (a-constant 1)) ((m-2) sub m-2 (a-constant 1)) (jump compute-region-crc) ;this function will be called with every half-word in the band. ;each time, the low 16 bits of the MD contain the current half-word, ;and the high 16 bits are 0 compute-region-crc-1 ((a-band-crc-accumulator) xor md a-band-crc-accumulator) (popj) DISK-RESTORE-REGIONWISE ((M-K) A-ZERO) ((M-I) ADD M-I (A-CONSTANT 3)) ((M-J) SUB M-J (A-CONSTANT 3)) ;Micro-code-symbol-area has a free pointer ;of zero, so is not copied into band. Therefore, REGION-ORIGIN, etc. start at 3rd page ;of band (CALL DISK-RESTORE-REGIONWISE-SUBR) (JUMP COLD-SWAP-IN) ;M-I and M-J have origin and size of data to restore, ;omitting the first three pages, and the bitmap and base band pages for an inc band. ;M-K used to have to do with incremental bands - now always 0 DISK-RESTORE-REGIONWISE-SUBR ;low 3 pages already in. ;Read in stuff below CCW buffer. This had better include REGION-ORIGIN, -LENGTH, -BITS, ; -FREE-POINTER. ;;core address ((M-B) (A-CONSTANT END-OF-MICRO-CODE-SYMBOL-AREA)) ;;we need to read in region-origin, length, bits and free-pointer ;; therefore, number of words = 3 * number of regions ((vma-start-read) (a-constant (eval (+ 400 %sys-com-number-regions)))) (illop-if-page-fault) ((md) q-pointer md) ((m-2) dpb md (byte-field 30. 2) a-zero) ;multiply by 4 ((m-2) ldb (byte 24. 8) m-2) ;convert to pages ((M-1) M-I) ;disk address ((m-tem) a-disk-lod-partition-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) (CALL COLD-DISK-READ) ((PDL-PUSH) M-K) (CALL GET-AREA-ORIGINS) ;set up A-V-REGION-ORIGIN, -LENGTH, -BITS for below ((M-K) PDL-POP) ;At this point, M-S has words physical memory. M-I, M-J point to band. ; A-V-REGION-ORGIN, -FREE-POINTER, and -BITS are valid, ; and those arrays are still in main memory and wont get clobbered by calling ; DISK-COPY-SECTION. A-DISK-OFFSET and A-DISK-MAXIMUM are set. ((M-AP) (A-CONSTANT 3)) ;region to hack. ((A-COPY-BAND-TEM) ADD M-I A-J) ;better not try to read above here. DISK-RR-1 ((VMA-START-READ) ADD M-AP A-V-REGION-BITS) (ILLOP-IF-PAGE-FAULT) ((M-TEM) LDB (LISP-BYTE %%REGION-SPACE-TYPE) MD) (JUMP-EQUAL M-TEM A-ZERO DISK-RR-2) ;free region, forget it. ((VMA-START-READ) ADD M-AP A-V-REGION-ORIGIN) (ILLOP-IF-PAGE-FAULT) ((M-Q) LDB VMA-PAGE-ADDR-PART MD) ((M-Q) ADD M-Q A-DISK-OFFSET) ((VMA-START-READ) ADD M-AP A-V-REGION-FREE-POINTER) (ILLOP-IF-PAGE-FAULT) ((MD) ADD MD (A-CONSTANT 377)) ((M-J) LDB VMA-PAGE-ADDR-PART MD) (CALL-GREATER-OR-EQUAL M-I A-COPY-BAND-TEM ILLOP) ;bandwise EOF. (error-table crash "Source band too small") ((M-TEM) ADD M-Q A-J) ((M-TEM) SUB M-TEM A-DISK-OFFSET) (CALL-GREATER-OR-EQUAL M-TEM A-DISK-MAXIMUM ILLOP) ;page partition not big enuf ; for this band. (error-table crash "Page band not big enough") (CALL DISK-RESTORE-REGION) (CALL-GREATER-OR-EQUAL M-I A-COPY-BAND-TEM ILLOP) ;bandwise EOF. (error-table crash "Source band too small") DISK-RR-2 ((vma-start-read) (a-constant (eval (+ 400 %sys-com-number-regions)))) (illop-if-page-fault) ((m-tem) q-pointer md) ((M-AP) ADD M-AP (A-CONSTANT 1)) (JUMP-LESS-THAN M-AP A-TEM DISK-RR-1) (POPJ) ;Copy one region from compressed LOD band to PAGE band. ;M-I and M-J have origin and size (on disk) of the region, where it lives in the LOD band. ;M-Q has disk address in PAGE band to copy to. ;M-K used to have bitmap length, now always 0 ;M-S assumed to have phys memory size. ;Clobbers M-1, M-2, M-B, M-C, M-D, M-J, M-T and M-R ;On exit, M-I and M-Q are updated past this region. DISK-RESTORE-REGION (JUMP DISK-COPY-SECTION-from-lod-to-page) ;;; Initialize physical memory from its swapped-out image on disk. ;;; Low 3 pages, page zero, the system communication area, and ;;; the scratchpad-init-area, already in. MICRO-CODE-SYMBOL-AREA also in since it ;;; was loaded by microcode loader. COLD-SWAP-IN ;;; Read in the rest of wired memory (the sys comm area has its size). ;;; Don't clobber the MICRO-CODE-SYMBOL-AREA ((m-1) a-band-saved-crc) ((m-1) ldb (byte 8 16.) m-1) (jump-equal m-1 a-zero cold-swap-in-1) (jump-equal m-1 (a-constant 1) band-check-checksum) (call illop) (error-table crash "Bad CRC type code") band-check-checksum ((m-1) a-band-saved-crc) ((m-1) ldb (byte 16. 0) m-1) ((m-2) a-band-crc-accumulator) ((m-2) ldb (byte 16. 0) m-2) (jump-equal m-1 a-2 cold-swap-in-1) (call illop) (error-table crash "Band has bad CRC") cold-swap-in-after-disk-save cold-swap-in-1 (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-WIRED-SIZE)))) ((M-2) VMA-PAGE-ADDR-PART READ-MEMORY-DATA) ;Number of wired pages ((M-C) Q-POINTER READ-MEMORY-DATA) ;Save for later, also put CCW list there ((M-B) (A-CONSTANT END-OF-MICRO-CODE-SYMBOL-AREA)) ((M-1) A-DISK-OFFSET) ((m-1) add m-1 (a-constant end-of-micro-code-symbol-area-in-pages)) ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-2) SUB M-2 (A-CONSTANT END-OF-MICRO-CODE-SYMBOL-AREA-IN-PAGES)) (CALL COLD-DISK-READ) ;;; Set things up according to actual main memory size ((WRITE-MEMORY-DATA) Q-POINTER M-S (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((VMA-START-WRITE) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-MEMORY-SIZE)))) (ILLOP-IF-PAGE-FAULT) ;;; Now set up the table of area addresses (CALL GET-AREA-ORIGINS) ;;; Reinitialize the page hash table to be completely empty; ;;; permanently wired pages have no entries. ;;; Decide the size of the PHT from the size of main memory; it should ;;; have 4 words in it for each page of main memory (thus will be 1/2 full). ((M-1) VMA-PAGE-ADDR-PART M-S) ;Number of pages of main memory ((M-1) ADD M-1 A-1 OUTPUT-SELECTOR-LEFTSHIFT-1) ;Times 4 ((M-1) ADD M-1 (A-CONSTANT (EVAL (1- PAGE-SIZE)))) ;Round up to multiple of page ((M-1) AND M-1 (A-CONSTANT (EVAL (MINUS PAGE-SIZE)))) ((M-TEM) A-V-PHYSICAL-PAGE-DATA) ;But not bigger than available space ((M-TEM) SUB M-TEM A-V-PAGE-TABLE-AREA) (JUMP-LESS-OR-EQUAL M-1 A-TEM COLD-REINIT-PHT-0) ((M-1) A-TEM) COLD-REINIT-PHT-0 ((A-PHT-INDEX-LIMIT) M-1) ;Size of page hash table ((WRITE-MEMORY-DATA) Q-POINTER M-1 (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((VMA-START-WRITE) (A-CONSTANT (EVAL (PLUS 400 %SYS-COM-PAGE-TABLE-SIZE)))) (ILLOP-IF-PAGE-FAULT) ((M-J VMA) ADD M-1 A-V-PAGE-TABLE-AREA) ;Address above PHT (CALL SET-PHT-INDEX-MASK) ((WRITE-MEMORY-DATA) a-zero) ;Fill PHT with zero. COLD-REINIT-PHT-2 ((VMA-START-WRITE) SUB VMA (A-CONSTANT 1)) (ILLOP-IF-PAGE-FAULT) (JUMP-GREATER-THAN VMA A-V-PAGE-TABLE-AREA COLD-REINIT-PHT-2) ;;; Initialize physical-page-data. First make it all completely null. ((WRITE-MEMORY-DATA) (M-CONSTANT -1)) ((VMA) A-V-ADDRESS-SPACE-MAP) ;A-V-PHYSICAL-PAGE-DATA + 1 ***a-v-region-origin in MIT COLD-REINIT-PPD-0 ((VMA-START-WRITE) SUB VMA (A-CONSTANT 1)) (ILLOP-IF-PAGE-FAULT) (JUMP-GREATER-THAN VMA A-V-PHYSICAL-PAGE-DATA COLD-REINIT-PPD-0) ;;; Make magic PHYSICAL-PAGE-DATA entries for the wired pages and ;;; free entries in PPD and PHT for the available main memory. ;;; M-J has the upper-bound address of the PHT. M-I gets same for PPD. ((M-1) VMA-PAGE-ADDR-PART M-S) ;Number of pages of main memory ((M-I) ADD M-1 A-V-PHYSICAL-PAGE-DATA) ((M-R) A-V-RESIDENT-SYMBOL-AREA) ;Address doing ((M-K) ADD M-S A-R) ;Size of memory ((M-C) M-J) ;Address for filling in PHT COLD-REINIT-PPD-1 (JUMP-GREATER-OR-EQUAL M-R A-V-REGION-GC-POINTER COLD-REINIT-PPD-3) ;free (JUMP-GREATER-OR-EQUAL M-R A-V-ADDRESS-SPACE-MAP COLD-REINIT-PPD-2) ;wired (JUMP-GREATER-OR-EQUAL M-R A-I COLD-REINIT-PPD-3) ;free part of PPD (JUMP-GREATER-OR-EQUAL M-R A-V-PHYSICAL-PAGE-DATA COLD-REINIT-PPD-2) ;wired (JUMP-GREATER-OR-EQUAL M-R A-J COLD-REINIT-PPD-3) ;free part of PHT COLD-REINIT-PPD-2 ((WRITE-MEMORY-DATA) (A-CONSTANT 177777)) ;Wired page, no PHT entry ; old code assumed all wired pages in first 256.! maybe they are and maybe they arent... ; ((VMA-START-WRITE) (BYTE-FIELD 8 8) M-R A-V-PHYSICAL-PAGE-DATA) ((vma) ldb (byte-field 17. 8) m-r) ((VMA-START-WRITE) add vma A-V-PHYSICAL-PAGE-DATA) (ILLOP-IF-PAGE-FAULT) (JUMP COLD-REINIT-PPD-4) COLD-REINIT-PPD-3 ((VMA M-C) SUB M-C (A-CONSTANT 4)) ;Put in a PHT entry for free page (CALL-XCT-NEXT XCPPG1) ;Create physical page ((C-PDL-BUFFER-POINTER-PUSH) M-R) ;At this address COLD-REINIT-PPD-4 ((M-R) ADD M-R (A-CONSTANT (EVAL PAGE-SIZE))) (JUMP-LESS-THAN M-R A-K COLD-REINIT-PPD-1) (JUMP BEG0000) xwarm-boot ;from warm-boot (call invalidate-cons-caches) ;try to preserve freshly consed stuff. #+lambda((RG-MODE) ANDCA RG-MODE (A-CONSTANT (PLUS (BYTE-MASK (BYTE-FIELD 1 27.)) ;disable interrupts (BYTE-MASK (BYTE-FIELD 1 30.))))) ;set 25 bit mode. #+exp ((mcr) andca mcr (a-constant 1_15.)) ;just disable interrupts #+LAMBDA(call flush-cache) #-lambda(begin-comment) ((m-tem) a-processor-switches) (jump-if-bit-clear (lisp-byte %%processor-switch-use-disk-sharing-protocol) m-tem beg0000) ((md) setz) ((vma) a-my-iopb-valid-flag-physical-adr) (call new-cold-nubus-write) (call initialize-share-iopb) #-lambda(end-comment) ;cold and warm boot merge here BEG0000 ((pdl-buffer-pointer m-a) (a-constant 4000)) ;size of pdl buffer CLEAR-PDL-BUFFER-AGAIN ((C-PDL-BUFFER-POINTER-PUSH) M-ZERO) ((M-A) ADD M-A A-MINUS-ONE) (JUMP-NOT-EQUAL M-A A-ZERO CLEAR-PDL-BUFFER-AGAIN) (call store-0-in-pointer-acs) ((M-FLAGS) (A-CONSTANT (PLUS ;RE-INITIALIZE ALL FLAGS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) (BYTE-VALUE M-CAR-SYM-MODE 1) (BYTE-VALUE M-CAR-NUM-MODE 0) (BYTE-VALUE M-CDR-SYM-MODE 1) (BYTE-VALUE M-CDR-NUM-MODE 0) (BYTE-VALUE M-DONT-SWAP-IN 0) (BYTE-VALUE M-TRAP-ENABLE 0) ;MACROCODE WILL TURN ON TRAPS WHEN READY (BYTE-VALUE M-MAR-MODE 0) (BYTE-VALUE M-PGF-WRITE 0) (BYTE-VALUE M-INTERRUPT-FLAG 0) (BYTE-VALUE M-SCAVENGE-FLAG 0) (BYTE-VALUE M-TRANSPORT-FLAG 0) (BYTE-VALUE M-STACK-GROUP-SWITCH-FLAG 0) (BYTE-VALUE M-DEFERRED-SEQUENCE-BREAK-FLAG 0) (BYTE-VALUE M-METER-STACK-GROUP-ENABLE 0) ;Presumably, these are what is wanted here, but they cause lossage in a ;very big way (will crash both sides of a 2X2 when one is booted.) ;(byte-value m-trap-on-calls 0) ;(byte-value m-enable-store-unreconciled 0) (byte-value m-no-stack-closures 0)))) ((M-SB-SOURCE-ENABLE) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((A-TV-CURRENT-SHEET) A-V-NIL) ;Forget this cache ((A-LEXICAL-ENVIRONMENT) A-V-NIL) ;At top level wrt lexical bindings. ; ((A-AMEM-EVCP-VECTOR) A-V-NIL) ;Don't write all over memory ((A-MOUSE-CURSOR-STATE) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ;Mouse off (call-xct-next reset-scavenger) ((pdl-push) a-scavenge-region) ((A-GC-SWITCHES) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((A-INHIBIT-SCHEDULING-FLAG) A-V-TRUE) ;DISABLE SEQUENCE BREAKS ((A-INHIBIT-SCAVENGING-FLAG) A-V-TRUE) ;GARBAGE COLLECTOR NOT TURNED ON UNTIL LATER ((A-PAGE-TRACE-PTR) SETZ) ;SHUT OFF PAGE-TRACE ((A-METER-GLOBAL-ENABLE) A-V-NIL) ;Turn off metering ((A-METER-DISK-COUNT) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL RESET-MACHINE) ;Reset and turn on interrupts (CALL INITIAL-MAP) ;set up map ((VMA-START-READ) (A-CONSTANT 1031)) ;FETCH MISCELLANEOUS SCRATCHPAD LOCS (ILLOP-IF-PAGE-FAULT) ((A-AMCENT) Q-TYPED-POINTER READ-MEMORY-DATA) ((VMA-START-READ) (A-CONSTANT 1021)) (ILLOP-IF-PAGE-FAULT) ((A-CNSADF) Q-TYPED-POINTER READ-MEMORY-DATA) ((A-BACKGROUND-CONS-AREA) A-CNSADF) ;; Initially don't hack the extra-pdl area. ;; The setup of A-FLOATING-ZERO depends on this, ;; as well as possibly other things. ((A-NUM-CNSADF) Q-TYPED-POINTER READ-MEMORY-DATA) (call invalidate-cons-caches) (CALL GET-AREA-ORIGINS) ((M-K) SUB M-ZERO (A-CONSTANT 200)) ;FIRST 200 MICRO ENTRIES ARE NOT IN TABLE ((A-V-MISC-BASE) ADD M-K A-V-MICRO-CODE-SYMBOL-AREA) ;; Clear the unused pages of the PHT and PPD out of the map ((MD) A-V-PHYSICAL-PAGE-DATA) ((MD) ADD MD A-V-PHYSICAL-PAGE-DATA-VALID-LENGTH) ((MD) IOR MD (A-CONSTANT 377)) ((MD) ADD MD (A-CONSTANT 1)) ;First page above PPD (JUMP-GREATER-OR-EQUAL MD A-V-REGION-ORIGIN BEGCM2) BEGCM1 ((#+lambda L2-MAP-CONTROL #+exp vma-write-l2-map-control) A-ZERO) ; (NO-OP) ((MD) ADD MD (A-CONSTANT (EVAL PAGE-SIZE))) (JUMP-LESS-THAN MD A-V-REGION-ORIGIN BEGCM1) BEGCM2 ((MD) A-V-PAGE-TABLE-AREA) ((MD) ADD MD A-PHT-INDEX-LIMIT) (JUMP-GREATER-OR-EQUAL MD A-V-PHYSICAL-PAGE-DATA BEGCM4) BEGCM3 ((#+lambda L2-MAP-CONTROL #+exp vma-write-l2-map-control) A-ZERO) ; (NO-OP) ((MD) ADD MD (A-CONSTANT (EVAL PAGE-SIZE))) (JUMP-LESS-THAN MD A-V-PHYSICAL-PAGE-DATA BEGCM3) (begin-comment) (end-comment) BEGCM4 ;set up volatility bits in L1 for all areas that exist, ;and in L2 for all fixed pages. ;(we assume we haven't taken a page fault yet.) ;;; Initialize the l1 map volatility bits to the volatilities of the corresponding ;;; regions. Note that the l1 map extra-pdl meta bits (and the valid bit) are set up later. initialize-l1-map-volatility ((m-k) m-zero) initialize-l1-map-volatility-loop (call-xct-next xrgn) ((pdl-push) m-k) ;; XRGN returns NIL for unassigned addresses. We plow ahead, assuming the low 25 bits is ;; the region number, which effectively sets up unused l1 map entries to have the same ;; volatility as region 0, which is volatility 0, which is OK. ((vma-start-read) add m-t a-v-region-bits) (illop-if-page-fault) ((m-tem1) ldb (lisp-byte %%region-volatility) md) ((md) m-k) ((m-tem) l1-map) ((#+lambda l1-map #+exp vma-write-l1-map) dpb m-tem1 map1-volatility a-tem) ((m-k) add m-k (a-constant (eval (* 400 32.)))) (jump-less-than m-k (a-constant (eval (^ 2 25.))) initialize-l1-map-volatility-loop) ;;; Volatility bits in wired l2 maps don't get set up by the normal mechanisms, so we do it here. initialize-l2-map-volatility ((vma-start-read) (a-constant (plus 400 (eval %sys-com-wired-size)))) (illop-if-page-fault) ((m-a) q-pointer md) initialize-l2-map-volatility-loop ((m-a) add m-a (a-constant -400)) (call-xct-next read-page-volatility) ((m-lam) q-page-number m-a) ((md) m-a) ;; Invert volatility here since it's going into the L2 map. Wait for maps. ((m-k) xor m-tem (a-constant 3)) ((m-tem) l2-map-control) #+lambda(jump-greater-than-xct-next m-a a-zero initialize-l2-map-volatility-loop) #+lambda((l2-map-control) dpb m-k map2c-volatility a-tem) #+exp ((m-tem) dpb m-k map2c-volatility a-tem) #+exp ((vma-write-l2-map-control) dpb m-tem exp-map2c-volatility a-tem) #+exp (jump-greater-than m-a a-zero initialize-l2-map-volatility-loop) ;; Get A-INITIAL-FEF, A-QTRSTKG, A-QCSTKG, A-QISTKG ((VMA) (A-CONSTANT 777)) ;SCRATCH-PAD-INIT-AREA MINUS ONE ((M-K) (A-CONSTANT (A-MEM-LOC A-SCRATCH-PAD-BEG))) ;FIRST A MEM LOC TO BLT INTO BEG03 ((VMA-START-READ) ADD VMA (A-CONSTANT 1)) (ILLOP-IF-PAGE-FAULT) (DISPATCH TRANSPORT READ-MEMORY-DATA) ((OA-REG-LOW) DPB M-K OAL-A-DEST A-ZERO) ;DESTINATION ((A-GARBAGE) READ-MEMORY-DATA) (JUMP-NOT-EQUAL-XCT-NEXT M-K (A-CONSTANT (A-MEM-LOC A-SCRATCH-PAD-END)) BEG03) ((M-K) ADD M-K (A-CONSTANT 1)) ((VMA-START-READ) A-INITIAL-FEF) ;INDIRECT (CHECK-PAGE-READ) ;; Don't let garbage pointer leak through DISK-RESTORE ;; There are a lot of these, we only get the ones that are known to cause trouble ;; There are also the "method subroutine" and "sg calling args" guys ((A-SELF) DPB Q-ALL-BUT-TYPED-POINTER M-ZERO A-V-NIL) ((A-SG-PREVIOUS-STACK-GROUP) A-V-NIL) (DISPATCH TRANSPORT READ-MEMORY-DATA) ((A-INITIAL-FEF) READ-MEMORY-DATA) (CALL-XCT-NEXT SG-LOAD-STATIC-STATE) ;INITIALIZE PDL LIMITS ETC ((A-QCSTKG) A-QISTKG) ;FROM INITIAL STACK-GROUP ((A-QLBNDP) ADD (M-CONSTANT -1) A-QLBNDO) ;INITIALIZE BINDING PDL POINTER ; POINTS AT VALID LOCATION, OF WHICH THERE ARENT ANY YET. ((A-PDL-BUFFER-HEAD) A-ZERO) ((A-PDL-BUFFER-VIRTUAL-ADDRESS) A-QLPDLO) ((PDL-BUFFER-POINTER) A-PDL-BUFFER-HEAD) ((A-PDL-BUFFER-HIGH-WARNING) (A-CONSTANT PDL-BUFFER-HIGH-LIMIT)) ;INITAL STACK ;HAD BETTER AT LEAST BIG ENUF FOR P.B. ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL XFLOAT) ((A-FLOATING-ZERO) M-T) ((C-PDL-BUFFER-POINTER) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ;THIS GOES ;INTO 0@P ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) ((M-A C-PDL-BUFFER-POINTER-PUSH) A-INITIAL-FEF) (check-data-type-call-not-equal m-a m-k dtp-fef-pointer illop) (error-table crash "Lisp-Top-Level pointer is not a FEF") ((M-AP) PDL-BUFFER-POINTER) ((m-fef) m-a) ((M-PDL-BUFFER-ACTIVE-QS) (A-CONSTANT 4)) ((VMA-START-READ) M-A) (CHECK-PAGE-READ) (DISPATCH TRANSPORT-HEADER READ-MEMORY-DATA) ((C-PDL-BUFFER-POINTER-PUSH) (LISP-BYTE %%FEFH-PC) READ-MEMORY-DATA) ;temporarily save initial PC BEG06 #+LAMBDA(CALL-NOT-EQUAL MICRO-STACK-PNTR-AND-DATA ;CLEAR THE MICRO STACK PNTR (TO -1) (A-CONSTANT (PLUS 377_24. 1 (I-MEM-LOC BEG06))) BEG06) #+EXP (CALL-NOT-EQUAL MICRO-STACK-PNTR ;CLEAR THE MICRO STACK PNTR (TO -1) (A-CONSTANT 77) BEG06) ((MICRO-STACK-DATA-PUSH) A-MAIN-DISPATCH) ;PUSH MAGIC RETURN ;store 4 in L1-MAP-META-BITS for pages corresponding to EXTRA-PDL-AREA. ((MD) A-V-EXTRA-PDL-AREA) BEG-EX-PDL-0 ((M-B) L1-MAP) ((#+lambda L1-MAP #+exp vma-write-l1-map) DPB M-minus-one map1-volatility-invalid A-B) ((MD) ADD MD (A-CONSTANT 20000)) (JUMP-LESS-THAN MD A-V-MICRO-CODE-ENTRY-AREA BEG-EX-PDL-0) ;follows ex-pdl-area. ((M-C) A-V-MICRO-CODE-ENTRY-AREA) ((M-C) LDB (BYTE-FIELD 13. 0) M-C A-ZERO) (CALL-NOT-EQUAL M-C A-ZERO ILLOP) ;EXTRA-PDL-AREA MUST END ON A LVL-1 MAP ;BOUNDARY. (error-table crash "Extra-Pdl-Area does not end on map boundary") #+lambda(call load-constants-page) #+lambda(call read-ucode-into-ucode-paging-area) ((m-array-pointer) invalidate-array-cache m-zero) (jump boot-exit-and-turn-pagable-ucode-on) #-lambda(begin-comment) load-constants-page ;load constants page into A-MEM 2200-2277. This allows us to save time ;referencing them. Note we do not transport. This is because there can be garbage ;left around after the active area. This should be fixed in cold-load generater. ;for now, its OK because there are no "pointer" constants. ((m-1) (a-constant 0)) lcp1 ((vma-start-read) add m-1 a-v-constants-area) (check-page-read) ((oa-reg-low) dpb m-1 oal-a-dest-6-bits (a-constant (byte-value oal-a-dest 2200))) ((a-garbage) q-typed-pointer md) (jump-less-than-xct-next m-1 (a-constant 77) lcp1) ((m-1) add m-1 (a-constant 1)) (popj) #-lambda(end-comment) store-0-in-pointer-acs ((m-1) (a-constant (m-mem-loc m-zr))) sz-0 ((oa-reg-low) dpb m-1 oal-m-dest a-zero) ((m-garbage) (a-constant (byte-value q-data-type dtp-fix))) (jump-not-equal-xct-next m-1 (a-constant (m-mem-loc m-k)) sz-0) ((m-1) add m-1 (a-constant 1)) (popj) ;;; Lowest level disk routines. ;;; Read or write sequence of blocks from core, ;;; copy contiguous range of blocks from disk to disk. ;The copy buffer must be far enough above INC-BAND-BITMAP-BUFFER-ORIGIN ;to leave room for as large a bitmap as we want to deal with. (ASSIGN COPY-BUFFER-CCW-PAGE-ORIGIN 100) (ASSIGN COPY-BUFFER-CCW-ORIGIN 40000) ;above * page-size (ASSIGN COPY-BUFFER-CCW-BLOCK-LENGTH 200) ;on lambda, also limited by available ;multibus -> nubus mapping pages. (1000 on CADR). (ASSIGN COPY-BUFFER-ORIGIN (eval (* 102 400))) ;Copy one sequence of disk blocks into another. ;M-I and M-J now have the start and size of the sequence to be copied from. ;M-Q has the start of the sequence to be copied into. ;M-S has the size of main memory (in words) ;On exit, M-I and M-Q are incremented past the block transfered, and M-J is zero. ;Clobbers M-B, M-C, M-D, M-T, M-1, M-2. ;Uses all of memory starting at COPY-BUFFER-ORIGIN. ;The two pages starting at COPY-BUFFER-CCW-PAGE-ORIGIN ;are used for disk CCWs, allowing transfer of up to 512. pages (128k words) at a time. DISK-COPY-SECTION-from-lod-to-page ;Here M-I, M-Q and M-J are as updated for blocks already transfered. (POPJ-EQUAL M-J A-ZERO) ;If done. ;M-D gets max # blocks we can transfer at once. ((M-D) SUB M-S (A-CONSTANT COPY-BUFFER-ORIGIN)) ;memory not used for buffer ((M-D) VMA-PHYS-PAGE-ADDR-PART M-D) ;Copy at most 1000 pages at a time since that is size of 2-page command list (JUMP-LESS-THAN M-D (A-CONSTANT COPY-BUFFER-CCW-BLOCK-LENGTH) DISK-COPY-PART-l-to-p-2) ((M-D) (A-CONSTANT COPY-BUFFER-CCW-BLOCK-LENGTH)) DISK-COPY-PART-l-to-p-2 (JUMP-GREATER-OR-EQUAL-XCT-NEXT M-J A-D DISK-COPY-PART-l-to-p-3) ((M-2) M-D) ;Number to do this time ((M-2) M-J) DISK-COPY-PART-l-to-p-3 ((M-D) M-2) ((M-B) (A-CONSTANT COPY-BUFFER-ORIGIN)) ;First page to use as buffer ((M-1) M-I) ;Read some in ((m-tem) a-disk-lod-partition-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) ;CCW list address (CALL COLD-DISK-READ) ; ((m-1) (a-constant copy-buffer-origin)) ; ((m-2) dpb m-d (byte 24. 8) a-zero) ; (call compute-region-crc) ((M-2) M-D) ((M-1) M-Q) ;Write some out ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) ;CCW list address (this gets clobbered) ((a-band-compute-crc-flag) seto) (CALL COLD-DISK-WRITE) ((M-I) ADD M-I A-D) ;Advance pointers ((M-Q) ADD M-Q A-D) ((M-J) SUB M-J A-D) (JUMP DISK-COPY-SECTION-from-lod-to-page) DISK-COPY-SECTION-from-page-to-lod ;Here M-I, M-Q and M-J are as updated for blocks already transfered. (POPJ-EQUAL M-J A-ZERO) ;If done. ;M-D gets max # blocks we can transfer at once. ((M-D) SUB M-S (A-CONSTANT COPY-BUFFER-ORIGIN)) ;memory not used for buffer ((M-D) VMA-PHYS-PAGE-ADDR-PART M-D) ;Copy at most 1000 pages at a time since that is size of 2-page command list (JUMP-LESS-THAN M-D (A-CONSTANT COPY-BUFFER-CCW-BLOCK-LENGTH) DISK-COPY-PART-p-to-l-2) ((M-D) (A-CONSTANT COPY-BUFFER-CCW-BLOCK-LENGTH)) DISK-COPY-PART-p-to-l-2 (JUMP-GREATER-OR-EQUAL-XCT-NEXT M-J A-D DISK-COPY-PART-p-to-l-3) ((M-2) M-D) ;Number to do this time ((M-2) M-J) DISK-COPY-PART-p-to-l-3 ((M-D) M-2) ((M-B) (A-CONSTANT COPY-BUFFER-ORIGIN)) ;First location to use as buffer ((M-1) M-I) ;Read some in ((m-tem) a-disk-page-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) ;CCW list address (CALL COLD-DISK-READ) ((M-2) M-D) ((M-1) M-Q) ;Write some out ((m-tem) a-disk-lod-partition-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-C) (A-CONSTANT COPY-BUFFER-CCW-ORIGIN)) ;CCW list address (this gets clobbered) ((a-band-compute-crc-flag) seto) (CALL COLD-DISK-WRITE) ((M-I) ADD M-I A-D) ;Advance pointers ((M-Q) ADD M-Q A-D) ((M-J) SUB M-J A-D) (JUMP DISK-COPY-SECTION-from-page-to-lod) COLD-DISK-WRITE ((VMA) A-DISK-RUN-LIGHT) ((WRITE-MEMORY-DATA) Q-POINTER (M-CONSTANT 0)) ((VMA-START-WRITE) ADD VMA (A-CONSTANT 2)) ;Turn off run bar (check-page-write) (call reset-watchdog) ((M-T) (A-CONSTANT DISK-WRITE-COMMAND)) ;;; M-B starting main memory ADDRESS. Must be on page boundary. Used to be page frame number. ;;; M-1 starting disk address ;;; M-2 number of pages to transfer ;;; M-T command ;;; M-C address of CCW list. COLD-RUN-DISK ((a-cold-run-disk-1) m-1) ;save disk address ((a-cold-run-disk-2) m-2) ;save n pages ((a-band-crc-tem) m-2) ((a-cold-run-disk-t) m-t) ;save command ((a-cold-run-disk-first-b) m-b) ;original M-B to restore later ((a-cold-run-disk-b) ldb (byte-field 24. 8) m-b a-zero) ;get page frame number. cold-run-disk-1 ((m-b) a-cold-run-disk-first-b) (popj-equal m-zero a-cold-run-disk-2) ;down to 0 pages, done ((m-1) a-cold-run-disk-1) ((m-2) a-cold-run-disk-2) (jump-less-than m-2 a-number-of-data-mapping-registers-for-disk cold-run-disk-2) ((m-2) a-number-of-data-mapping-registers-for-disk) cold-run-disk-2 ((m-t) a-cold-run-disk-2) ((a-cold-run-disk-2) sub m-t a-2) ;we need to do M-2 less pages next time ((a-cold-run-disk-1) add m-2 a-cold-run-disk-1) ; ...and starting M-2 pages farther in ((m-b) a-cold-run-disk-b) ((a-cold-run-disk-b) add m-b a-2) ;and bump the core address by M-2 ((m-t) a-cold-run-disk-t) (CALL START-DISK-N-PAGES) (jump-equal m-zero a-band-compute-crc-flag cold-run-disk-3) ((m-1) a-cold-run-disk-first-b) ((m-2) a-band-crc-tem) ((m-2) dpb m-2 (byte 24. 8) a-zero) (call compute-region-crc) ;may clobber M-B, M-1, M-2, or M-T ((a-band-compute-crc-flag) setz) cold-run-disk-3 (call cold-await-disk) ((m-c) a-disk-clp) ;restore M-C to where it was before ;start-disk-n-pages (jump cold-run-disk-1) cold-await-disk ((A-DISK-SAVE-PGF-A) M-A) ((A-DISK-SAVE-PGF-B) M-B) (CALL AWAIT-DISK) (POPJ-AFTER-NEXT (M-B) A-DISK-SAVE-PGF-B) ((M-A) A-DISK-SAVE-PGF-A) COLD-DISK-READ-1 ;1 page read ((M-2) (A-CONSTANT 1)) ((M-C) (A-CONSTANT #+lambda 777 #+exp 776)) COLD-DISK-READ ((VMA) A-DISK-RUN-LIGHT) ((WRITE-MEMORY-DATA) (M-CONSTANT -1)) ((VMA-START-WRITE) ADD VMA (A-CONSTANT 2)) ;Turn on run bar (check-page-write) (call reset-watchdog) ((M-T) (A-CONSTANT DISK-READ-COMMAND)) (JUMP COLD-RUN-DISK) #-lambda (begin-comment) READ-UCODE-INTO-UCODE-PAGING-AREA ; ;CALLED WHEN JUST READY TO START LISP. ; ;READ I-MEM SECTION OF LMC FILE INTO MICRO-CODE-PAGING-AREA ; ;LMC PARITION START IN A-DISK-UCODE-PARTITION-START ((m-array-pointer) a-disk-ucode-partition-start) ((m-array-header) (a-constant 400)) ;This "cut-down" version of the PROM ucode reads only the I-MEM section of the ;LMC file into MICRO-CODE-PAGING-AREA. It assumes the I-MEM section comes first ;in the LMC file. ;;; Process one section. Each section starts with three words: ;;; The section type, the initial address, and the number of locations. ;;; These are gotten into M-ARRAY-ORIGIN, M-ARRAY-LENGTH, and M-ARRAY-RANK; then the section type is ;;; "dispatched" on. ;;; Section codes are: ;;; 1 = I-MEM, 2 = D-MEM (obsolete), 3 = MAIN-MEM, 4 = A-M-MEM, 5 MACRO-INSTRUCTION-DECODE PROCESS-SECTION (CALL GET-NEXT-WORD) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-ORIGIN) M-A) ;gets section code (first word) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-LENGTH) M-A) ;gets starting adr (second word) ((M-ARRAY-RANK) M-A) ;size (third word) (JUMP-EQUAL M-ARRAY-ORIGIN (A-CONSTANT 1) process-i-mem-section) (jump-equal m-array-origin (a-constant 3) process-main-mem-section) (jump-equal m-array-origin (a-constant 4) process-a-mem-section) (jump-equal m-array-origin (a-constant 5) process-mid-section) (call illop) (error-table crash "Bad section type in microcode partition") PROCESS-I-MEM-SECTION (JUMP-NOT-EQUAL M-ARRAY-LENGTH A-ZERO ILLOP) ;ERROR-BAD-ADDRESS (error-table crash "Bad address for I-MEM in microcode partition") PROCESS-I-MEM-SECTION-0 (popj-equal m-array-rank a-zero) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-RANK) SUB M-ARRAY-RANK (A-CONSTANT 1)) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-ORIGIN) M-A) ;;; Now the first word of the instruction is in M-ARRAY-ORIGIN, second word is in M-A, ;;; and the address in I-MEM is in M-ARRAY-LENGTH. ((md) m-array-origin) ((vma) add m-array-length a-array-length) ((vma-start-write) add vma a-v-micro-code-paging-area) (check-page-write-no-interrupt) ;store second word ((md) m-a) ((vma-start-write) add vma (a-constant 1)) (check-page-write-no-interrupt) (JUMP-XCT-NEXT PROCESS-I-MEM-SECTION-0) ((M-ARRAY-LENGTH) ADD M-ARRAY-LENGTH (A-CONSTANT 1)) process-main-mem-section (call get-next-word) ;;; M-array-length (m-c)/ Number of blocks. ;;; M-array-rank (m-d)/ Address of first block, relative to beginning of partition. ;;; M-A/ Physical memory address of first word. ((M-array-origin) ADD M-array-rank a-disk-ucode-partition-start) MAIN-MEM-LOOP (JUMP-EQUAL m-array-length A-ZERO PROCESS-SECTION) ((m-1) m-array-origin) ;disk address ((m-tem) a-disk-ucode-partition-unit) ((m-1) dpb m-tem (byte 8 24.) a-1) ((m-b) m-a) (CALL cold-DISK-READ-1) ((M-array-origin) ADD m-array-origin (a-constant 1)) ((M-A) ADD M-A (A-constant 400)) (JUMP-XCT-NEXT MAIN-MEM-LOOP) ((M-array-length) SUB M-array-length (A-constant 1)) process-d-mem-section process-t-mem-section process-mid-section (jump-equal m-array-rank a-zero process-section) (call get-next-word) ((m-array-rank) sub m-array-rank (a-constant 1)) (jump process-d-mem-section) process-a-mem-section (popj-equal m-array-rank a-zero) (call get-next-word) ((m-array-rank) sub m-array-rank (a-constant 1)) (jump process-a-mem-section) GET-NEXT-WORD ; Get the next word of the MICR partition into M-A. M-ARRAY-POINTER ; contains the number of the next page to be read in from it. ; M-ARRAY-HEADER has the relative address of the next word within disk buffer. ; Clobbers M-TEMP-1, M-TEMP-2, Q-R. (JUMP-GREATER-OR-EQUAL m-array-header (A-CONSTANT 400) GET-NEXT-PAGE) ((VMA-START-READ) add m-array-header a-v-wired-disk-buffer) (CALL-IF-PAGE-FAULT ILLOP) (POPJ-AFTER-NEXT (M-A) READ-MEMORY-DATA) ((M-ARRAY-HEADER) ADD M-ARRAY-HEADER (a-constant 1)) GET-NEXT-PAGE ((M-ARRAY-HEADER) SETZ) ((M-1) M-ARRAY-POINTER) ;DISK ADDRESS ((m-tem) a-disk-ucode-partition-unit) ((m-1) dpb m-tem (byte-field 8 24.) a-1) ((M-B) A-V-WIRED-DISK-BUFFER) (CALL-XCT-NEXT COLD-DISK-READ-1) ((M-A) SETZ) (JUMP-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-POINTER) M+A+1 M-ARRAY-POINTER A-ZERO) #-lambda (end-comment) #-exp (begin-comment) Setup-Microcode-Symbol-Area ;;; Called right away to copy the main memory section of the microcode into ;;; the mirocode symbol area before the main memory section gets wiped out. ;;; This "cut-down" version of the PROM ucode reads only the main memory section ;;; of the EMC file into the MICRO-CODE-SYMBOL-AREA ;;; Process one section. Each section starts with three words: ;;; The section type, the initial address, and the number of locations. ;;; These are gotten into M-ARRAY-ORIGIN, M-ARRAY-LENGTH, and M-ARRAY-RANK; then the section type is ;;; "dispatched" on. ;;; Section codes are: ;;; 1 = I-MEM, 2 = D-MEM (obsolete), 3 = MAIN-MEM, 4 = A-M-MEM, 5 MACRO-INSTRUCTION-DECODE ((m-array-pointer) seta (field a-source-multiplier 1772)) ; Random offset used by the Explorer boot PROM ((m-array-pointer) add m-array-pointer (a-constant #x80000)) ;first throw out the stupid version number section (call get-next-word) (call get-next-word) (call get-next-word) (call get-next-word) (call get-next-word) PROCESS-SECTION (CALL GET-NEXT-WORD) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-ORIGIN) M-A) ;gets section code (first word) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-LENGTH) M-A) ;gets starting adr (second word) ((M-ARRAY-RANK) M-A) ;size (third word) (JUMP-EQUAL M-ARRAY-ORIGIN (A-CONSTANT 1) process-i-mem-section) (jump-equal m-array-origin (a-constant 2) process-d-mem-section) (jump-equal m-array-origin (a-constant 3) process-main-mem-section) (jump-equal m-array-origin (a-constant 4) process-a-mem-section) (jump-equal m-array-origin (a-constant 5) process-t-mem-section) (call illop) (error-table crash "Bad section type in microcode partition") PROCESS-I-MEM-SECTION (JUMP-NOT-EQUAL M-ARRAY-LENGTH A-ZERO ILLOP) ;ERROR-BAD-ADDRESS (error-table crash "Bad I-MEM address in microcode partition") PROCESS-I-MEM-SECTION-0 (jump-EQUAL M-ARRAY-RANK A-ZERO process-section) ;count exhausted, done (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-RANK) SUB M-ARRAY-RANK (A-CONSTANT 1)) (CALL-XCT-NEXT GET-NEXT-WORD) ((M-ARRAY-ORIGIN) M-A) (JUMP-XCT-NEXT PROCESS-I-MEM-SECTION-0) ((M-ARRAY-LENGTH) ADD M-ARRAY-LENGTH (A-CONSTANT 1)) process-main-mem-section (call get-next-word) ;;; M-array-length (m-c)/ Number of blocks. ;;; M-array-rank (m-d)/ Address of first block, relative to beginning of partition. ;;; M-A/ Physical memory address of first word. ((m-array-rank) dpb m-array-rank (byte-field 22. 10.) a-zero) ; convert from blocks to bytes ((m-array-rank) add m-array-rank (field a-source-multiplier 1772)) ((m-array-rank) add m-array-rank (a-constant #x80000)) ((m-array-origin) dpb m-a (byte-field 22. 2) (a-constant #xF4000000)) ((M-Array-Length) dpb m-array-length (byte-field 24. 8.) a-zero) ; convert from blocks to words MAIN-MEM-LOOP (jump-equal m-array-length a-zero process-section) ; read word (call-xct-next nubus-read) ((vma) m-array-rank) ((m-array-rank) add m-array-rank (a-constant 4)) ; write word (call-xct-next nubus-write) ((vma) m-array-origin) ((m-array-origin) add m-array-origin (a-constant 4)) (jump-xct-next main-mem-loop) ((m-array-length) sub m-array-length (a-constant 1)) process-d-mem-section process-t-mem-section process-mid-section (jump-equal m-array-rank a-zero process-section) (call get-next-word) ((m-array-rank) sub m-array-rank (a-constant 1)) (jump process-d-mem-section) process-a-mem-section (popj-equal m-array-rank a-zero) (call get-next-word) ((m-array-rank) sub m-array-rank (a-constant 4)) (jump process-a-mem-section) GET-NEXT-WORD (call-xct-next nubus-read) ((vma) m-array-pointer) (popj-after-next (m-array-pointer) add m-array-pointer (a-constant 4)) ((m-a) md) #-exp (end-comment) SET-PHT-INDEX-MASK ;Given A-PHT-INDEX-SIZE in M-1 ((M-2) A-ZERO) ;Build mask with same haulong SET-PHT-INDEX-MASK-1 ((M-2) M+A+1 M-2 A-2) ;Shift left bringing in 1 ((M-1) (BYTE-FIELD 37 1) M-1) ;Shift right bringing in 0 (POPJ-AFTER-NEXT (A-PHT-INDEX-MASK) DPB M-ZERO (BYTE-FIELD 1 0) A-2) ;clear low bit (CALL-NOT-EQUAL M-1 (A-CONSTANT 0) SET-PHT-INDEX-MASK-1) #-lambda(begin-comment) COLD-GET-DISK-GEOMETRY-FROM-CMOS ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 360140))) (CALL XMULTIBUS-READ-8) (CALL-NOT-EQUAL M-T (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 144)) ILLOP) ;d (error-table crash bad cmos ram in sdu) ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 360144))) (CALL XMULTIBUS-READ-8) (CALL-NOT-EQUAL M-T (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 151)) ILLOP) ;i (error-table crash bad cmos ram in sdu) ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 360150))) (CALL XMULTIBUS-READ-8) (CALL-NOT-EQUAL M-T (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 163)) ILLOP) ;s (error-table crash bad cmos ram in sdu) ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 360154))) (CALL XMULTIBUS-READ-8) (CALL-NOT-EQUAL M-T (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 153)) ILLOP) ;k (error-table crash bad cmos ram in sdu) ((C-PDL-BUFFER-POINTER-PUSH) (A-CONSTANT (PLUS (BYTE-VALUE Q-DATA-TYPE DTP-FIX) 360214))) ;sectors per track (CALL XMULTIBUS-READ-8) ((A-DISK-BLOCKS-PER-TRACK) Q-POINTER M-T) (POPJ) #-lambda(end-comment) #-lambda(begin-comment) COLD-READ-MINI-LABEL (CALL COLD-GET-DISK-GEOMETRY-FROM-CMOS) ((A-DISK-CYLINDER-OFFSET) A-ZERO) ((A-DISK-BLOCKS-PER-CYLINDER) (A-CONSTANT 500.)) ;a large number for the time being ; ((A-DISK-BLOCKS-PER-TRACK) (A-CONSTANT 25.)) ;so as to win.. ((M-B) A-V-WIRED-DISK-BUFFER) ;core address. 0 first time, otherwise ;set up. ((M-1) (A-CONSTANT 22.)) ;disk address (CALL COLD-DISK-READ-1) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) A-V-WIRED-DISK-BUFFER) ;buffer loc 0 (CALL-NOT-EQUAL MD (A-CONSTANT 10223647506) ILLOP) ;FOOB = 106 117 117 102 (error-table crash bad check word in mini label) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) add vma (A-CONSTANT 1)) (CALL-NOT-EQUAL MD (A-CONSTANT 12024644514) ILLOP) ;LISP = 114, 111, 123, 120 (error-table crash no LISP entry in mini-label) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) add vma (A-CONSTANT 1)) ((A-DISK-CYLINDER-OFFSET) MD) (POPJ) #-lambda(end-comment) ;;; Read the disk label and find the main load partition to be used, ;;; and the PAGE partition. The main load to be used is either the ;;; one whose name is in M-4, or, if M-4 is 0, A-DISK-BAND-PARTITION-NAME if that ;;; is non-zero, or the current one from the label. The paging partition now ;;; comes from a-disk-page-partition-name, which will normally be PAGE unless ;;; it was loaded differently from the configuration structure. ;;; Also set A-LOADED-BAND for later macrocode use. ;To summerize - this routine sets up ; ; a-disk-blocks-per-track (on lambda) ; a-disk-blocks-per-cylinder (on lambda) ; a-disk-offset (for PAGE) (also put in M-Q) ; a-disk-maximum (for PAGE) (also put in M-R) ; a-loaded-ucode with dtp-fix & lower 3 bytes of ucode part name ; a-disk-ucode-partition-start ; a-disk-ucode-partition-length ; a-loaded-band with dtp-fix & lower 3 bytes of LOD part name ; m-i LOD band start ; m-j LOD band length #-lambda(begin-comment) COLD-READ-LABEL ((M-B) a-v-wired-disk-buffer) ;Core page 0 or wired disk buffer ((M-1) A-ZERO) ;Disk page 0 (CALL COLD-DISK-READ-1) ;support for multi page labels temporarily removed. ; has to worry about clobbering the IOPB in sys com area in page 1. ; ((M-B) (A-CONSTANT 1000)) ;Core page 2 ; ((M-1) (a-constant 4)) ;Disk page 4 ; (CALL COLD-DISK-READ-1) ;Cannot use COLD-DISK-READ-1 next since that puts the CCW in 777 ; ((M-B) (A-CONSTANT 400)) ;Core page 1 ; ((M-1) (a-constant 2)) ;Disk page 2 ; ((M-2) (A-CONSTANT 1)) ; ((M-C) (A-CONSTANT 170)) ;Words 170-177 in disk label not used! ; (CALL COLD-DISK-READ) ;Location 6 contains the name of the ucode partition. ;Location 7 contains the name of the main load partition. ;Location 200 contains the partition table. ;We must also find the PAGE partition and set up A-DISK-OFFSET and A-DISK-MAXIMUM ((m-1) a-v-wired-disk-buffer) (CALL-XCT-NEXT PHYS-MEM-READ) ; Read the number of blocks per track ((VMA) add m-1 (A-CONSTANT 4)) ((A-DISK-BLOCKS-PER-TRACK) Q-POINTER READ-MEMORY-DATA (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL-XCT-NEXT PHYS-MEM-READ) ; Read the number of heads ((VMA) add m-1 (A-CONSTANT 3)) ((Q-R) READ-MEMORY-DATA) ; Get number of blocks per cylinder (CALL-XCT-NEXT MPY) ; Blocks/track * tracks/cylinder ((M-1) DPB M-ZERO Q-ALL-BUT-POINTER A-DISK-BLOCKS-PER-TRACK) ((A-DISK-BLOCKS-PER-CYLINDER) Q-POINTER Q-R (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL-XCT-NEXT COLD-FIND-PARTITION) ((m-3) a-disk-page-partition-name) ; ((M-3) (A-CONSTANT 10521640520)) ; PAGE = 105 107 101 120 = 10521640520 ((A-DISK-OFFSET) M-I) ((A-DISK-MAXIMUM) M-J) ((M-Q) M-I) ;M-Q, M-R point to PAGE partition ((M-R) M-J) ((vma) a-v-wired-disk-buffer) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) add vma (A-CONSTANT 6)) ((M-3) READ-MEMORY-DATA) ;Current ucode (jump-equal m-zero a-disk-ucode-partition-name cold-read-label-4) ((m-3) a-disk-ucode-partition-name) ;use this if it has been loaded from conf. cold-read-label-4 ((A-LOADED-UCODE) (BYTE-FIELD 30 10) M-3 (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL COLD-FIND-PARTITION) ;Set up M-I, M-J for partition to load. ((a-disk-ucode-partition-start) m-i) ((a-disk-ucode-partition-length) m-j) ((vma) a-v-wired-disk-buffer) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) add vma (A-CONSTANT 7)) ((M-3) READ-MEMORY-DATA) ;Current Band (jump-equal m-zero a-disk-band-partition-name cold-read-label-2) ((m-3) a-disk-band-partition-name) ;use this if it has been loaded from conf. cold-read-label-2 (JUMP-EQUAL M-4 A-ZERO COLD-READ-LABEL-1) ((M-3) M-4) COLD-READ-LABEL-1 ((A-LOADED-BAND) (BYTE-FIELD 30 10) M-3 (A-CONSTANT (BYTE-VALUE Q-DATA-TYPE DTP-FIX))) (CALL COLD-FIND-PARTITION) ;Set up M-I, M-J for partition to load. (POPJ) ;;; With the label in buffer starting at A-V-WIRED-DISK-BUFFER, this routine finds a partition ;;; whose name is in M-3 and returns its start and size (in blocks) in M-I and M-J. COLD-FIND-PARTITION ((vma) a-v-wired-disk-buffer) (CALL-XCT-NEXT PHYS-MEM-READ) ;Get number of partitions ((VMA) add vma (A-CONSTANT 200)) ((M-I) READ-MEMORY-DATA) (CALL-XCT-NEXT PHYS-MEM-READ) ;Get words per partition ((VMA) ADD VMA (A-CONSTANT 1)) ((M-J) READ-MEMORY-DATA) ((VMA) ADD VMA (A-CONSTANT 1)) COLD-FIND-PART-LOOP (CALL-EQUAL M-I A-ZERO ILLOP) ;Out of partitions, not found, die (error-table crash "Can't find LOD, PAGE, or LMC partition") (CALL PHYS-MEM-READ) ;Get name of a partition ((M-I) SUB M-I (A-CONSTANT 1)) (JUMP-NOT-EQUAL-XCT-NEXT READ-MEMORY-DATA A-3 COLD-FIND-PART-LOOP) ((VMA) ADD VMA A-J) ((VMA) SUB VMA A-J) (CALL-XCT-NEXT PHYS-MEM-READ) ;Found it, get start and size ((VMA) ADD VMA (A-CONSTANT 1)) ((M-I) READ-MEMORY-DATA) (CALL-XCT-NEXT PHYS-MEM-READ) ((VMA) ADD VMA (A-CONSTANT 1)) (POPJ-AFTER-NEXT (M-J) READ-MEMORY-DATA) (NO-OP) #-lambda(end-comment) ;;; Read the disk label and find the main load partition to be used, ;;; and the PAGE partition. The main load to be used is either the ;;; one whose name is in M-4, or, if M-4 is 0, A-DISK-BAND-PARTITION-NAME if that ;;; is non-zero, or the current one from the label. The paging partition now ;;; comes from a-disk-page-partition-name, which will normally be PAGE unless ;;; it was loaded differently from the configuration structure. ;;; Also set A-LOADED-BAND for later macrocode use. ;To summerize - this routine sets up ; ; a-disk-blocks-per-track (on lambda) ; a-disk-blocks-per-cylinder (on lambda) ; a-disk-offset (for PAGE) (also put in M-Q) ; a-disk-maximum (for PAGE) (also put in M-R) ; a-loaded-ucode with dtp-fix & lower 3 bytes of ucode part name ; a-disk-ucode-partition-start ; a-disk-ucode-partition-length ; a-loaded-band with dtp-fix & lower 3 bytes of LOD part name ; m-i LOD band start ; m-j LOD band length #-exp (begin-comment) ;uses page 0 the first time; then uses a-v-wired-disk-buffer, ; therefore, this never trashes any lisp memory ;when we get here, there is enough of a straight map to cover page 0 ;or a-v-wired-disk-buffer COLD-READ-LABEL (jump-equal m-4 a-zero cold-read-label-each-drive) ;;M-4 is zero the first time, but will be the name of a load ;; band to save into if coming from disk-save. if so, we ;; don't want to re-use the old offsets for the LOD band. ;; on the other hand, disk-save shouldn't update the offset ;; and size of the PAGE band. ((a-disk-lod-partition-start) setz) cold-read-label-each-drive ((m-b) a-v-wired-disk-buffer) ;will be 0 the first time ((m-a) seta (field a-source-multiplier 1775)) ; read unit number from PROM ((m-a) (byte-field 6 0) m-a) ((a-disk-ucode-partition-unit) m-a) ((a-disk-lod-partition-unit) m-a) ((a-disk-page-unit) m-a) ((m-1) dpb m-a (byte-field 8 24.) (a-constant 2)) ;disk page 2 on unit in M-A (CALL COLD-DISK-READ-1) (call cold-read-label-page) ;;; ((m-a) add m-a (a-constant 1)) ;this will have to be hairier for multiple formatters ;;; (jump-less-than m-a (a-constant 2) cold-read-label-each-drive) ;;; (jump-less-than m-a (a-constant 1) cold-read-label-each-drive) (call-equal m-zero a-disk-offset illop) (call-equal m-zero a-disk-ucode-partition-start illop) (call-equal m-zero a-disk-lod-partition-start illop) ((m-i) a-disk-lod-partition-start) ((m-j) a-disk-lod-partition-length) ((m-q) a-disk-offset) ((m-r) a-disk-maximum) (popj) cold-read-label-page ((m-1) (a-constant 2)) ;partition type PAGE ((m-b) setz) ;M-B = 0 means looking for PAGE band (call search-label-block-for-partition-type) (call-not-equal m-i a-zero found-page-partition) ((m-1) (a-constant 1)) ;microcode ((m-b) (a-constant 1)) ;M-B = 1 means looking for ucode ;name is in 1776@a (call search-label-block-for-partition-type) (call-not-equal m-i a-zero found-ucode-partition) ((m-1) (a-constant 0)) ;load band ((m-b) (a-constant 2)) ;M-B = 2 means looking for band, ;name is either M-4 or 1777@a (call search-label-block-for-partition-type) (call-not-equal m-i a-zero found-lod-partition) (popj) found-page-partition (popj-not-equal m-zero a-disk-offset) ;dont check for partition too big here since true allowable maximum size ;depends on A-LOWEST-DIRECT-VIRTUAL-ADDRESS. Instead, check against that ;at MAKE-REGION-CONTINUE. (popj-after-next (a-disk-maximum) m-j) ((a-disk-offset) m-i) found-ucode-partition (popj-not-equal m-zero a-disk-ucode-partition-start) ((vma-start-read) m-2) (illop-if-page-fault) ((a-loaded-ucode) ldb (byte-field 24. 8) md (a-constant (byte-value q-data-type dtp-fix))) ((a-disk-ucode-partition-start) m-i) ((a-disk-ucode-partition-length) m-j) (popj) found-lod-partition (popj-not-equal m-zero a-disk-lod-partition-start) ((a-loaded-band) ldb (byte-field 24. 8) md (a-constant (byte-value q-data-type dtp-fix))) ((a-disk-lod-partition-start) m-i) ((a-disk-lod-partition-length) m-j) (popj) search-label-block-for-partition-type ((vma) a-v-wired-disk-buffer) ((vma-start-read) add vma (a-constant 2)) ;get number of partitions (illop-if-page-fault) ((m-i) md) ((vma) a-v-wired-disk-buffer) ((vma-start-read) add vma (a-constant 3)) ;get words per partition (illop-if-page-fault) ((m-j) md) ((m-2) a-v-wired-disk-buffer) ((m-2) add m-2 (a-constant 20)) search-label-block-loop (jump-equal m-i a-zero search-label-block-not-found) ((vma-start-read) add m-2 (a-constant 3)) ;get type word (illop-if-page-fault) ((m-tem) ldb (byte-field 8 0) md) (call-equal m-tem a-1 search-label-block-check-this-one) ((m-i) sub m-i (a-constant 1)) ((m-2) add m-2 a-j) (jump search-label-block-loop) search-label-block-check-this-one (jump-equal m-b (a-constant 0) search-label-block-for-page-partition) (jump-equal m-b (a-constant 1) search-label-block-for-ucode-partition) (jump-equal m-b (a-constant 2) search-label-block-for-band-partition) search-label-block-for-band-partition (jump-equal m-zero (field a-source-multiplier 1777) search-label-check-for-default-lod-band) ((vma-start-read) m-2) (illop-if-page-fault) (jump-equal md (field a-source-multiplier 1777) search-label-block-really-found) (popj) search-label-check-for-default-lod-band ((vma-start-read) add m-2 (a-constant 3)) (illop-if-page-fault) (popj-if-bit-clear (byte-field 1 26.) md) (jump search-label-block-really-found) search-label-block-for-ucode-partition (jump-equal m-zero (field a-source-multiplier 1776) search-label-check-for-default-mcr-band) ((vma-start-read) m-2) (illop-if-page-fault) (jump-equal md (field a-source-multiplier 1776) search-label-block-really-found) (popj) search-label-check-for-default-mcr-band ((vma-start-read) add m-2 (a-constant 3)) (illop-if-page-fault) (popj-if-bit-clear (byte-field 1 26.) md) (jump search-label-block-really-found) search-label-block-for-page-partition ;;falls in -- just use first page partition found search-label-block-really-found ((vma-start-read) add m-2 (a-constant 1)) ;partition start (illop-if-page-fault) ((m-i) md) ((vma-start-read) add m-2 (a-constant 2)) ;partition length (illop-if-page-fault) ((m-j) md) ((vma-start-read) m-2) ;leave name in MD (illop-if-page-fault) ((m-garbage) micro-stack-data-pop) (popj) search-label-block-not-found ((m-i) setz) (popj) #-exp(end-comment) #-lambda(begin-comment) RESET-MACHINE ((A-DISK-BUSY) M-ZERO) ;Forget pending disk operation ((m-tem1) rg-mode) ((rg-mode) dpb m-minus-one (byte-field 1 31) a-tem1) ;turn on enable MISC-MID. ;if this isnt on it will get into a loop at MISC-PDL, etc, because the ;dispatch address it reads from MACRO-IR-DECODE will be MISC-PDL, etc. (call activate-processor-switches) ;e.g. turn on stat2 clock (call set-up-video-board) #+lambda(call lambda-reset-interrupt-ram) (popj) set-up-video-board ((m-1) a-tv-quad-slot) ((m-1) ldb (byte-field 8 8) m-1) (jump-equal m-1 (a-constant 0) init-vcmem-serial) ;VCMEM (jump-equal m-1 (a-constant 1) init-vcmem-serial) ;VCMEM (popj-equal m-1 (a-constant 2)) ;QUAD (call illop) (error-table crash unknown video board type) init-vcmem-serial ;;; Set up the baud rates for the serial ports ((write-memory-data) (a-constant #x88)) ((vma-start-write) (a-constant (plus 177370400 4))) (check-page-write-map-reload-only) (call-xct-next vcmem-serial-set-up-port) ;VCMEM A port for keyboard ((vma) (a-constant (plus 177370400 15))) ;redo register 5 to turn on break bit, and keep from heating up speaker ((md-start-write) (a-constant #x05)) (check-page-write-map-reload-only) ((md-start-write) (a-constant #xFA)) (check-page-write-map-reload-only) (call-xct-next vcmem-serial-set-up-port) ;VCMEM B port for mouse ((vma) (a-constant (plus 177370400 17))) (popj) vcmem-serial-set-up-port ((md-start-write) (a-constant #x00)) ;Fake out if waiting for data byte (check-page-write-map-reload-only) ((md-start-write) (a-constant #x18)) ;Reset port (check-page-write-map-reload-only) ((md-start-write) (a-constant #x01)) ;Address register 1 (check-page-write-map-reload-only) ((md-start-write) (a-constant #x18)) ;Interrupt on all RX characters (check-page-write-map-reload-only) ((md-start-write) (a-constant #x03)) ;Address register 3 (check-page-write-map-reload-only) ((md-start-write) (a-constant #xC1)) ;8 bits/RX char, RX enable (check-page-write-map-reload-only) ((md-start-write) (a-constant #x04)) ;address register 4 (check-page-write-map-reload-only) ((md-start-write) (a-constant #x84)) ;x32 clock, 1 stop bit (check-page-write-map-reload-only) ((md-start-write) (a-constant #x05)) ;address register 5 (check-page-write-map-reload-only) (popj-after-next (md-start-write) (a-constant #xEA)) ;DTR, 8 bits/TX char, TX enable, RTS (check-page-write-map-reload-only) ;Reset interrupt RAM. lambda-reset-interrupt-ram ((RG-MODE) IOR RG-MODE (A-CONSTANT (BYTE-MASK (BYTE-FIELD 1 27.)))) ;enable interrupts RST0 ((M-1) (A-CONSTANT 400)) RST (JUMP-CONDITIONAL PG-FAULT-OR-INTERRUPT RESET-I-1);an "interrupt" to "service" (JUMP-NOT-EQUAL-XCT-NEXT M-1 A-ZERO RST) ((M-1) SUB M-1 (A-CONSTANT 1)) ; ((INTERRUPT-CONTROL) DPB (M-CONSTANT -1) ;Clear RESET, set halfword-mode, ; (BYTE-FIELD 1 27.) A-ZERO) ;and enable interrupts ; ((MD) SETZ) ; (CALL-XCT-NEXT PHYS-MEM-WRITE) ;Reset bus interface status. ; ((VMA) (A-CONSTANT 17773022)) ;Unibus loc 766044 (POPJ) ;dont drop into INITIAL-MAP, since SYS-COM area might not be set up. RESET-I-1 (JUMP-XCT-NEXT RST0) ;service interrupt and start delay over. ((INTERRUPT-CLEAR) A-ZERO) serial-set-up-port ((md-start-write) (a-constant #x00)) ;Fake out if waiting for data byte (check-page-write-map-reload-only) ((md-start-write) (a-constant #x18)) ;Reset port (check-page-write-map-reload-only) ((md-start-write) (a-constant #x01)) ;Address register 1 (check-page-write-map-reload-only) ((md-start-write) (a-constant #x18)) ;Interrupt on all RX characters (check-page-write-map-reload-only) ((md-start-write) (a-constant #x03)) ;Address register 3 (check-page-write-map-reload-only) ((md-start-write) (a-constant #xC1)) ;8 bits/RX char, RX enable (check-page-write-map-reload-only) ((md-start-write) (a-constant #x04)) ;address register 4 (check-page-write-map-reload-only) ((md-start-write) (a-constant #x84)) ;x32 clock, 1 stop bit (check-page-write-map-reload-only) ((md-start-write) (a-constant #x05)) ;address register 5 (check-page-write-map-reload-only) (popj-after-next (md-start-write) (a-constant #xEA)) ;DTR, 8 bits/TX char, TX enable, RTS (check-page-write-map-reload-only) #-lambda(end-comment) #-exp (begin-comment) RESET-MACHINE ((A-DISK-BUSY) M-ZERO) ;Forget pending disk operation ((md) setz) ((vma) (a-constant #xf6e00000)) ((m-tem) setz) exp-reset-interrupts ((vma-start-write-unmapped) vma) (no-op) ((vma) add vma (a-constant 4)) ((m-tem) add m-tem (a-constant 1)) (jump-less-than m-tem (a-constant 16.) exp-reset-interrupts) (popj) #-exp (end-comment) ;LOADING THE INITIAL MAP. ; THE FIRST STEP IS TO ADDRESS THE SYSTEM COMMUNICATION AREA AND FIND ; OUT MUCH VIRTUAL MEMORY SHOULD BE WIRED AND STRAIGHT-MAPPED (%SYS-COM-WIRED-SIZE). ; THE MAP IS THEN SET UP FOR THOSE PAGES. THE REMAINDER OF VIRTUAL ; SPACE IS MADE "MAP NOT SET UP." STUFF WILL THEN BE PICKED ; UP OUT OF THE PAGE HASH TABLE. IT IS ALSO NECESSARY TO SET UP THE ; LAST BLOCK OF LEVEL 2 MAP TO "MAP NOT SET UP (ZERO)". INITIAL-MAP (CALL-XCT-NEXT PHYS-MEM-READ) ;ADDRESS SYSTEM COMMUNICATION AREA ((VMA) (A-CONSTANT (PLUS 400 (EVAL %SYS-COM-WIRED-SIZE)))) COLD-WIRE-MAP ((M-A) Q-POINTER MD) ;SAVE NUMBER OF WIRED WORDS INITIAL-MAP-A ;Enter here with number of words to map in M-A ;FIRST SET ALL LEVEL 1 MAP TO 177 ((MD) DPB (M-CONSTANT -1) (BYTE-FIELD 1 25.) A-ZERO) INIMAP1 #+LAMBDA((L1-MAP) (A-CONSTANT 177)) #+exp ((vma-write-l1-map) (a-constant (plus 177 (byte-value l1-map-valid-exp 1) (byte-value l1-map-old-exp 1)))) ((MD) SUB MD (A-CONSTANT 20000)) (JUMP-NOT-EQUAL MD A-ZERO INIMAP1) ;THEN ZERO LAST BLOCK OF LEVEL 2 MAP ((MD) A-ZERO) INIMAP2 ;ZERO LAST BLOCK OF LVL 2 MAP. (NOTE LVL 1 MAP ENTRY 0 IS 177, TEMPORARILY) #+exp (no-op) ((#+lambda L2-MAP-CONTROL #+exp vma-write-l2-map-control) A-ZERO) ; (NO-OP) ((MD) ADD MD (A-CONSTANT (EVAL PAGE-SIZE))) (JUMP-IF-BIT-CLEAR (BYTE-FIELD 1 13.) MD INIMAP2) ;NOW SET UP WIRED LEVEL 1 MAP ((MD) A-ZERO) #+lambda((M-C) A-ZERO) #+exp ((m-c) (a-constant (plus (byte-value l1-map-valid-exp 1) (byte-value l1-map-old-exp 1)))) INIMAP7 ((#+lambda L1-MAP #+exp vma-write-l1-map) M-C) ((MD) ADD MD (A-CONSTANT 20000)) (JUMP-LESS-THAN-XCT-NEXT MD A-A INIMAP7) ((M-C) ADD M-C (A-CONSTANT 1)) ((A-SECOND-LEVEL-MAP-REUSE-POINTER-INIT) and M-C (a-constant 177)) ;FIRST NON-WIRED ;THEN SET UP WIRED LEVEL 2 MAP ((MD) SETZ) INIMAP3 (CALL-XCT-NEXT LOAD-L2-MAP-FROM-CADR-PHYSICAL) ;SELF-ADDRESS ((M-LAM) VMA-PHYS-PAGE-ADDR-PART MD (A-CONSTANT (PLUS (BYTE-VALUE pht2-MAP-ACCESS-CODE 3) ;RW ;(BYTE-VALUE pht2-MAP-STATUS-CODE 0) ;4 READ/WRITE (BYTE-VALUE pht2-META-BITS 64) ;NOT OLD, NOT EXTRA-PDL, STRUC ))) ((MD) ADD MD (A-CONSTANT (EVAL PAGE-SIZE))) ;NEXT PAGE (JUMP-LESS-THAN MD A-A INIMAP3) ;LOOP UNTIL DONE ALL WIRED ADDRESSES INIM3A ((M-1) (BYTE-FIELD 5 8) MD) ;IF NOT AT EVEN 1ST LVL MAP BOUNDARY... (JUMP-EQUAL M-1 A-ZERO INIM3B) ; INITIALIZE REST OF 2ND LVL BLOCK TO ((#+lambda L2-MAP-CONTROL #+exp vma-write-l2-map-control) (A-CONSTANT 0)) ; MAP NOT SET UP. (JUMP-XCT-NEXT INIM3A) ((MD) ADD MD (A-CONSTANT (EVAL PAGE-SIZE))) INIM3B ;INITIALIZE REVERSE 1ST LVL MAP ((A-SECOND-LEVEL-MAP-REUSE-POINTER) A-SECOND-LEVEL-MAP-REUSE-POINTER-INIT) ;store scratch pointer in l1 map. -- never changed ((md) a-map-scratch-block) #+lambda((l1-map) (a-constant 176)) #+exp ((vma-write-l1-map) (a-constant (plus 176 (byte-value l1-map-valid-exp 1) (byte-value l1-map-old-exp 1)))) #-lambda(begin-comment) ;reverse 1st LVL MAP in A-MEM locs 2000-2177 on LAMBDA. ; entry is data to put in MD to address 1st level map entry which is currently assigned ; code which is relative adr of entry. Unused entries are negative. ((MD) SETZ) ;value to go in wired entries ((M-2) (A-CONSTANT 2000)) INIMAP5 ((OA-REG-LOW) DPB M-2 OAL-A-DEST A-ZERO) ((A-GARBAGE) MD) ((MD) ADD MD (A-CONSTANT 20000)) ;address next 1st lvl entry. This is the same as ; virtual address if hard wired. (JUMP-LESS-THAN MD A-A INIMAP6) ;jump if still hard wired. ((M-A MD) (M-CONSTANT -1)) INIMAP6 (JUMP-LESS-THAN-XCT-NEXT M-2 (A-CONSTANT 2177) INIMAP5) ((M-2) ADD M-2 (A-CONSTANT 1)) #-lambda(end-comment) #-exp (begin-comment) ;REVERSE 1ST LVL MAP LOCS 1200-1377 ;that is, last half of scratch-pad-init-area page ((md) M-ZERO) ;VALUE TO GO IN WIRED ENTRIES ((VMA) (A-CONSTANT 1177)) INIMAP5 ((VMA-START-WRITE) ADD VMA (A-CONSTANT 1)) (ILLOP-IF-PAGE-FAULT) ((md) ADD WRITE-MEMORY-DATA (A-CONSTANT 20000)) (JUMP-LESS-THAN md A-A INIMAP6) ;JUMP IF STILL WIRED ((M-A md) (M-CONSTANT -1)) ;REST OF ENTRYS ARE -1. INIMAP6 (JUMP-LESS-THAN VMA (A-CONSTANT 1377) INIMAP5) #-exp (end-comment) (POPJ) ;some routines, used below, to help set up the initial configuration ;since none of them can get page faults without calling illop, I'm using ;the page fault variables to save things, and nothing but the page fault ;variables get clobbered ;address are passed in m-lam, and are normal nubus addresses, except shifted ;right by 2. ;data comes in or goes out in MD ;location 0 in the map is used, though it is restored ;NOTE: these can't use the scratch block since they are called from get-configuration cold-nubus-read #-LAMBDA (BEGIN-COMMENT) ((md) setz) ;following inst gives maps time to settle. (no-op) ((a-pgf-t) l1-map) ((a-pgf-a) l2-map-control) ((a-pgf-b) l2-map-physical-page) ((l2-map-control) (a-constant 1464)) ;no caching. ((l2-map-physical-page) ldb m-lam (byte-field 22. 8.) a-zero) ((vma-start-read) ldb (byte-field 8 0) m-lam a-zero) (illop-if-page-fault) ((vma) md) ((md) setz) (no-op) ((l1-map) a-pgf-t) ((l2-map-control) a-pgf-a) (popj-after-next (l2-map-physical-page) a-pgf-b) ((md) vma) #-LAMBDA (END-COMMENT) #-exp (begin-comment) ((vma-start-read-unmapped) dpb m-lam (byte-field 30. 2) a-zero) (popj) #-exp (end-comment) ;vma gets whole 32. bit nubus address - result in MD, vma is modified new-cold-nubus-read #-LAMBDA (BEGIN-COMMENT) ((md) setz) (no-op) ((a-pgf-t) l1-map) ((a-pgf-a) l2-map-control) ((a-pgf-b) l2-map-physical-page) ((l2-map-control) (a-constant 1464)) ((l2-map-physical-page) ldb vma (byte-field 22. 10.) a-zero) ((vma-start-read) ldb (byte-field 8 2) vma a-zero) (illop-if-page-fault) ((vma) md) ((md) setz) ((l1-map) a-pgf-t) ((l2-map-control) a-pgf-a) (popj-after-next (l2-map-physical-page) a-pgf-b) ((md) vma) #-LAMBDA (END-COMMENT) #-exp (begin-comment) ((vma-start-read-unmapped) vma) (popj) #-exp(end-comment) cold-nubus-write #-LAMBDA (BEGIN-COMMENT) ((m-tem1) md) ((md) setz) ;following inst gives maps time to settle. (no-op) ((a-pgf-t) l1-map) ((a-pgf-a) l2-map-control) ((a-pgf-b) l2-map-physical-page) ((l2-map-control) (a-constant 1464)) ;no caching. ((l2-map-physical-page) ldb m-lam (byte-field 22. 8.) a-zero) ((md) a-tem1) ((vma-start-write) ldb (byte-field 8 0) m-lam a-zero) (illop-if-page-fault) ((md) setz) (no-op) ((l1-map) a-pgf-t) (popj-after-next (l2-map-control) a-pgf-a) ((l2-map-physical-page) a-pgf-b) #-LAMBDA (END-COMMENT) #-exp(begin-comment) ((vma-start-write-unmapped) vma) (popj) #-exp(end-comment) ;new-cold-nubus-write moved to uc-lambda-cold-disk until restore thing works #-LAMBDA (BEGIN-COMMENT) ; for writing SDU mapping registers cold-nubus-write-3-bytes ((m-tem1) md) ;byte 0 ((md) setz) ;following inst gives maps time to settle. ((m-tem3) ldb (byte-field 8 2) vma) ((a-pgf-t) l1-map) ((a-pgf-a) l2-map-control) ((a-pgf-b) l2-map-physical-page) ((l2-map-control) (a-constant 5400)) ;no caching. ((m-tem2) ldb vma (byte-field 22. 10.) a-zero) ((l2-map-physical-page) a-tem2) ((md) a-tem1) ((vma-start-write) a-tem3) (illop-if-page-fault) ;byte 1 ((md) setz) ((l2-map-physical-page) m-minus-one dpb (byte-field 1 22.) a-tem2) ((md) a-tem1) ((vma-start-write) a-tem3) (illop-if-page-fault) ;byte 2 ((md) setz) ((l2-map-physical-page) m-minus-one dpb (byte-field 1 23.) a-tem2) ((md) a-tem1) ((vma-start-write) a-tem3) (illop-if-page-fault) ((md) setz) ((l1-map) a-pgf-t) (popj-after-next (l2-map-control) a-pgf-a) ((l2-map-physical-page) a-pgf-b) #-LAMBDA (END-COMMENT) #-lambda (begin-comment) ;;; Configuration and options ; m-a sys-conf-virtual-adr ; m-b a-proc-conf-virtual-adr ; m-c "share struct pointer" a 32. bit nubus address, shifted right by 2 bits ; m-d slot number for my share-iopb ; m-t temp , max-iopbs * 4 for a little while ;we only arrive here at cold boot time, so it's ok to clear memories, etc get-configuration (call-equal m-zero a-proc-conf-local-phys-adr illop) ;;the following constructurs either 0 or #x10000000 in M-E depending ;;on if we are on the same bus as the SDU or not ((m-e) a-proc-conf-local-phys-adr) ;this is still an SDU-PHYS-ADR at this point ((m-e) and m-e (a-constant #x10000000)) ((m-e) xor m-e (a-constant #x10000000)) ((a-local-phys-adr-convert) m-e) ((m-t) ldb (byte-field 8 24.) m-e) ((a-sdu-quad-slot) xor m-t (a-constant #xff)) ((vma m-a) a-proc-conf-local-phys-adr) (call new-cold-nubus-read) ; get the system configuration pointer ((md) xor md a-local-phys-adr-convert) ((m-b) md) ((m-a) sub m-a a-b) ;number of bytes between proc conf and sys conf ((m-a) ldb (byte-field 30. 2) m-a) ; convert to word offset ((a-proc-conf-virtual-adr) add m-a (a-constant sys-conf-virtual-adr)) ((m-a) ldb (byte-field 22. 10.) md) ((a-sys-conf-base-phys-page) sub m-a (a-constant (eval (- 80. 2)))) ;;set up the mapping regs for the sys conf page(s) ((md) (a-constant sys-conf-virtual-adr)) ((l1-map) (a-constant 176)) ;use scratch block ((l2-map-control) (a-constant 1464)) ((m-tem) a-sys-conf-base-phys-page) ((l2-map-physical-page m-tem) add m-tem (a-constant (eval (- 80. 2)))) ((md) add md (a-constant 400)) ((l2-map-control) (a-constant 1464)) ((l2-map-physical-page) m+1 m-tem) ((m-a) (a-constant sys-conf-virtual-adr)) ((m-b) a-proc-conf-virtual-adr) ;check version number ((vma-start-read) add m-a (a-constant (eval %system-configuration-version-number))) (illop-if-page-fault) (call-not-equal md (a-constant 1) illop) ;must be version 1 (error-table crash "System Configuraton Structure is not version 1") ((vma-start-read) add m-b (a-constant (eval %processor-conf-starting-processor-switches))) (illop-if-page-fault) ((a-processor-switches) ior md (a-constant (eval (dpb 1 %%processor-switch-new-sys-conf-mapping 0)))) ;new mem board loop ((m-c) (a-constant (a-mem-loc a-pmo-0))) ((m-d) (a-constant (a-mem-loc a-pmh-0))) ((m-i) add m-b (a-constant (eval %processor-conf-memory-base-0))) ((m-j) add m-b (a-constant (eval %processor-conf-memory-bytes-0))) ((m-t) a-zero) get-next-mem-board ((vma-start-read) m-i) ;base (illop-if-page-fault) ((md) xor md a-local-phys-adr-convert) ((m-r) ldb (byte-field 22. 10.) md) ((oa-reg-low) dpb m-c oal-a-dest a-zero) ((a-garbage) m-r) ((vma-start-read) m-j) ;bytes (illop-if-page-fault) ((m-s) ldb (byte-field 22. 10.) md) ((oa-reg-low) dpb m-d oal-a-dest a-zero) ((a-garbage) m-s) (jump-equal m-t a-zero clear-mem-board-done) ;prom has cleared first memory board (jump-equal m-s a-zero clear-mem-board-done) ;size of zero means not there ((md) a-zero) (setz) ((m-1) l2-map-physical-page) ((m-3) a-zero) ;relative page number clear-mem-board-1 ((l2-map-physical-page) add m-r a-3) ((vma) a-zero) clear-mem-board-2 ((md-start-write) a-zero) (illop-if-page-fault) ((vma) add vma (a-constant 1)) (jump-less-than vma (a-constant 400) clear-mem-board-2) ((m-3) add m-3 (a-constant 1)) (jump-less-than m-3 a-s clear-mem-board-1) ((l2-map-physical-page) m-1) clear-mem-board-done ((m-c) add m-c (a-constant 1)) ((m-d) add m-d (a-constant 1)) ((m-i) add m-i (a-constant 1)) ((m-j) add m-j (a-constant 1)) ((m-t) add m-t (a-constant 1)) (jump-less-than m-t (a-constant 10.) get-next-mem-board) ;set up slot numbers ((m-tem) a-processor-switches) (jump-if-bit-clear (lisp-byte %%processor-switch-slot-numbers-set-up) m-tem slots-set-up) ((vma-start-read) add m-b (a-constant (eval %processor-conf-slot-number))) (illop-if-page-fault) ((a-rg-quad-slot) xor md (a-constant #xf0)) ((m-tem) ldb (byte-field 4 4) md) ((vma-start-read) add m-b (a-constant (eval %processor-conf-vcmem-slot))) (illop-if-page-fault) ((a-tv-quad-slot) xor md (a-constant #xf0)) ((m-t) ldb (byte-field 4 4) md) ((a-tv-quad-slot) dpb m-minus-one (byte-field 4 4) a-tv-quad-slot) (jump-equal m-t a-tem rg-and-tv-on-same-bus) ((a-tv-quad-slot) dpb m-zero (byte-field 1 4) a-tv-quad-slot) rg-and-tv-on-same-bus ((m-t) a-tv-quad-slot) ((m-t) ldb (byte-field 8 8) m-t) ; video board type, 0 or 1 = VCMEM, 2 = QUAD (jump-equal m-t (a-constant 0) set-up-for-vcmem) (jump-equal m-t (a-constant 1) set-up-for-vcmem) (jump-equal m-t (a-constant 2) set-up-for-quad) (call illop) (error-table crash "Unknown video board type") set-up-for-quad ((m-t) a-tv-quad-slot) ((a-video-buffer-base-phys-page) dpb m-t (byte-field 8 14.) a-zero) ((m-t) ldb (byte-field 8 16.) m-t) ;screen number ((a-video-buffer-base-phys-page) dpb m-t (byte-field 2 11.) a-video-buffer-base-phys-page) ((a-disk-run-light) (a-constant (plus (byte-value q-data-type dtp-fix) 177000000 310_5 12.))) (jump video-set-up-done) set-up-for-vcmem ((m-t) a-tv-quad-slot) ((a-video-buffer-base-phys-page) dpb m-t (byte-field 8 14.) (a-constant 200)) ;fix up the run lights so they can be seen on either landscape or portrait monitors ;310 is line number for run lights to appear on ;#x6000 is beginning of VCMEM scan line table ((vma) dpb m-t (byte-field 8 24.) (a-constant (eval (+ #x6000 (* 4 310))))) (call new-cold-nubus-read) ((md) ldb (byte-field 15. 1) md) ;divide by 2, also mask to make sure it ;doesn't fall outside the screen ;(you'll probably lose some other way though...) ;now MD is word offset in TV buffer for desired line ;12. is number of words over on line ((a-disk-run-light) add md (a-constant (plus (byte-value q-data-type dtp-fix) 177000000 12.))) (jump video-set-up-done) video-set-up-done ((vma-start-read) add m-a (a-constant (eval %system-configuration-grey-slot))) (illop-if-page-fault) ((a-grey-quad-slot) xor md (a-constant #xf0)) ((m-t) ldb (byte-field 4 4) md) ((a-grey-quad-slot) dpb m-minus-one (byte-field 4 4) a-grey-quad-slot) (jump-equal m-t a-tem rg-and-grey-on-same-bus) ((a-grey-quad-slot) dpb m-zero (byte-field 1 4) a-grey-quad-slot) rg-and-grey-on-same-bus ((a-rg-quad-slot) dpb m-minus-one (byte-field 4 4) a-rg-quad-slot) slots-set-up ;I think whoever put in the set-up-for-[quad,vcmem] above probably wanted ;to comment this out too... ; ;fix up the run lights so they can be seen on either landscape or portrait monitors ; ((m-t) a-tv-quad-slot) ; ;310 is line number for run lights to appear on ; ;#x6000 is beginning of VCMEM scan line table ; ((vma) dpb m-t (byte-field 8 24.) (a-constant (eval (+ #x6000 (* 4 310))))) ; (call new-cold-nubus-read) ; ((md) ldb (byte-field 15. 1) md) ;divide by 2, also mask to make sure it ; ;doesn't fall outside the screen ; ;(you'll probably lose some other way though...) ; ;now MD is word offset in TV buffer for desired line ; ;12. is number of words over on line ; ((a-disk-run-light) add md (a-constant (plus (byte-value q-data-type dtp-fix) ; 177000000 ; 12.))) ((vma-start-read) add m-b (a-constant (eval %processor-conf-number-of-multibus-maps))) (illop-if-page-fault) (jump-equal md a-zero no-multibus-map-limit) ((a-number-of-data-mapping-registers-for-disk) add md (a-constant -2)) no-multibus-map-limit ;hack the "2x2" stuff before the disk because of A-MULTIBUS-DISK-MAP-BASE ((m-tem) a-processor-switches) (jump-if-bit-clear (lisp-byte %%processor-switch-2x2-stuff-valid-in-conf-structure) m-tem get-configuration-2x2-done) ((vma-start-read) add m-b (a-constant (eval %processor-conf-load-band))) (illop-if-page-fault) ((a-disk-band-partition-name) md) ((vma-start-read) add m-b (a-constant (eval %processor-conf-micro-band))) (illop-if-page-fault) ((a-disk-ucode-partition-name) md) ((vma-start-read) add m-b (a-constant (eval %processor-conf-paging-band))) (illop-if-page-fault) ((a-disk-page-partition-name) md) ((vma-start-read) add m-b (a-constant (eval %processor-conf-base-multibus-mapping-register))) (illop-if-page-fault) ((a-multibus-disk-map-base) md) get-configuration-2x2-done ((m-tem) a-processor-switches) (jump-if-bit-clear (lisp-byte %%processor-switch-use-disk-sharing-protocol) m-tem get-configuration-no-share-disk) ;;get here either on cold boot, or on warm boot to reinitialize the disk stuff ;;therefore m-a, m-b, etc may be trashed initialize-share-iopb ;;set up the mapping regs for the sys conf page(s) ((md) (a-constant sys-conf-virtual-adr)) ((l1-map) (a-constant 176)) ((l2-map-control) (a-constant 1464)) ((m-tem) a-sys-conf-base-phys-page) ((l2-map-physical-page m-tem) add m-tem (a-constant (eval (- 80. 2)))) ((md) add md (a-constant 400)) ((l2-map-control) (a-constant 1464)) ((l2-map-physical-page) m+1 m-tem) ((m-a) (a-constant sys-conf-virtual-adr)) ((m-b) a-proc-conf-virtual-adr) ((md) a-zero) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-runme))) (illop-if-page-fault) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-interrupt-addr))) (illop-if-page-fault) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-spare-1))) (illop-if-page-fault) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-spare-2))) (illop-if-page-fault) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-spare-3))) (illop-if-page-fault) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-spare-4))) (illop-if-page-fault) ((md) a-rg-quad-slot) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-slot))) (illop-if-page-fault) ((md) (a-constant 4)) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-type))) (illop-if-page-fault) ;;SDU mapping register MAP-BASE + 0 points to the IOPB ;;thie iopb is at virtual address 640 ;;that's an offset of (- 640 400) = 240 words in the page ;;therefore, the multibus offset is (+ (ash map-base 10.) (* 240 4.)) ((m-tem) a-multibus-disk-map-base) ((md) dpb m-tem (byte-field 10. 10.) (a-constant (eval (* 240 4.)))) (call convert-md-to-8086) ((vma-start-write) add m-b (a-constant (eval %processor-conf-share-iopb))) (illop-if-page-fault) ;;set up SDU mapping register MAP-BASE + 1 to point to share-iopb structure ;;here we assume that the lambda proc conf is contained in 1 page *** ((m-tem) a-proc-conf-local-phys-adr) ((m-tem) xor m-tem a-local-phys-adr-convert) ((m-tem) ldb m-tem (byte-field 22. 10.) a-zero) ((md) dpb m-minus-one (byte-field 1 23.) a-tem) ; enable bit ((m-t) m+a+1 m-zero a-multibus-disk-map-base) ((m-t) dpb m-t (byte-field 30. 2) a-zero) ;multiply by 4 ((m-t) add m-t (a-constant #x18000)) ;offset on SDU ((vma) a-sdu-quad-slot) ((vma) dpb vma (byte-field 8 24.) a-t) (call cold-nubus-write-3-bytes) ;;do the work to link into the iopb "chain" (either cold or warm boot) ((vma-start-read) add m-a (a-constant (eval %system-configuration-share-struct-pointer))) (illop-if-page-fault) ((m-c) xor md a-local-phys-adr-convert) ;;below here, memory references are to the "share-struct" which is probably ;; somewhere in multibus memory. in any case, it doesn't seem like it ;; will be used enough to "direct map" it ((vma) add m-c (a-constant (eval (* 4 %share-struct-max-iopbs)))) (call new-cold-nubus-read) ((m-t) dpb md (byte-field 30. 2) a-zero) ;multiply by 4 ;m-d is the iopb slot number counter ((m-d) setz) find-empty-entry ((vma) add m-c (a-constant (eval (* 4 %share-struct-start-of-valid-table)))) (call-xct-next new-cold-nubus-read) ((vma) add vma a-d) (jump-equal md a-zero found-empty-entry) ((m-d) add m-d (a-constant 4)) (call-equal m-d a-t illop) (error-table crash "Out of SHARE-IOPB slots") (jump find-empty-entry) found-empty-entry ;; now m-d is four times the number of an empty share-iopb slot ;; new we have to make an 8086 pointer to the share-iopb in multibus mapping ;; register MAP-BASE + 1. The multibus offset is ;; (+ (ash (1- MAP-BASE) 10.) (ldb 0012 (* 4 (+ m-proc-conf-ptr ;; a-%processor-conf-share-runme)))) ((md) add m-b (a-constant (eval %processor-conf-share-runme))) ((m-tem) m+a+1 m-zero a-multibus-disk-map-base) ((m-tem) dpb m-tem (byte-field 10. 10.) a-zero) ((md) dpb md (byte-field 8 2) a-tem) (call convert-md-to-8086) ;; now md is the approiate pointer, store it in the iopb table ((vma) add m-c (a-constant (eval (* 4 %share-struct-start-of-valid-table)))) ((vma) add vma a-t) ; add in (* 4 max-iopbs) ((vma) add vma a-d) (call new-cold-nubus-write) ;; set the valid flag ((md) (a-constant 1)) ((vma) add m-c (a-constant (eval (* 4 %share-struct-start-of-valid-table)))) ((a-my-iopb-valid-flag-physical-adr) add vma a-d) ((vma) a-my-iopb-valid-flag-physical-adr) (call new-cold-nubus-write) (popj) convert-md-to-8086 ((m-tem1) ldb (byte-field 4 0) md a-zero) (popj-after-next (md) ldb (byte-field 16. 4) md a-zero) ((md) dpb md (byte-field 16. 16.) a-tem1) get-configuration-no-share-disk (popj) #-lambda(end-comment) #-exp (begin-comment) get-configuration ;; search slots from slot 4 down to 0 for memory boards ;; initialize slot number ((m-1) (a-constant 4)) ;; initialize block pointers ((m-a) (a-constant (a-mem-loc a-pmo-0))) ((m-b) (a-constant (a-mem-loc a-pmh-0))) memory-board-loop ;; check for memory board (call memory-board-in-slot) ; flag into m-2 ;; if found, get size and add it (jump-equal m-2 a-zero not-memory-board) (call get-memory-board-size) ; size into m-2 (call add-memory-board) not-memory-board ((m-1) SUB m-1 (a-constant 1)) (jump-if-bit-clear (byte-field 1 31.) m-1 memory-board-loop) ((a-tv-quad-slot) (a-constant #xf5)) (popj) ;; check for memory board in slot ;; slot number in m-1 ;; result non-zero in m-2 if memory board found ;; trashes m-c memory-board-in-slot ;; check for TI memory board ((m-2) m-minus-one) ;maybe memory board here ;; build address and check for M ((m-c) dpb m-minus-one (byte-field 24. 8.) (a-constant #x84)) (call-xct-next memory-board-check-M) ((m-c vma) dpb m-1 (byte-field 4. 24.) a-c) ;; increment pointer and check for E (call-xct-next memory-board-check-E) ((m-c vma) ADD m-c (a-constant 4)) ;; increment pointer and check for M (call-xct-next memory-board-check-M) ((vma) ADD m-c (a-constant 4)) ;; if memory board found return (popj-not-equal m-2 a-zero) ;; check for LMI memory board ((m-2) m-minus-one) ;maybe memory board here ;; build address and check for M ((m-c) dpb m-minus-one (byte-field 20. 12.) (a-constant #xC10)) (call-xct-next memory-board-check-M) ((m-c vma) dpb m-1 (byte-field 4. 24.) a-c) ;; increment pointer and check for E (call-xct-next memory-board-check-E) ((m-c vma) ADD m-c (a-constant 4)) ;; increment pointer and check for "M" (call-xct-next memory-board-check-M) ((vma) ADD m-c (a-constant 4)) (popj) memory-board-check-M (call new-cold-nubus-read) ((md) ldb md (byte-field 8 0) a-zero) (popj-equal md (a-constant 115)) ; "M" (popj-xct-next) ((m-2) a-zero) memory-board-check-E (call new-cold-nubus-read) ((md) ldb md (byte-field 8 0) a-zero) (popj-equal md (a-constant 105)) ; "E" (popj-xct-next) ((m-2) a-zero) ;; get memory board size ;; slot number in m-1 ;; result in m-2 (number of pages) ;; hard code size of 4000 pages (2 meg) for testing get-memory-board-size ;; starting offset for memory board ((m-2) dpb m-1 (byte-field 4. 24.) a-zero) ((m-2) dpb m-minus-one (byte-field 4. 28.) a-2) memory-board-size-loop ;; try to write to memory location ((m-2) add m-2 (a-constant 400000)) ; min memory quantum 128K ((md) a-zero) ((vma) m-2) (call nubus-write) ; sets vma to m-minus-one on timeout (jump-not-equal vma a-minus-one memory-board-size-loop) ((m-2) ldb m-2 (byte-field 14. 10.) a-zero) (popj) ;; add memory board ;; slot number in m-1 ;; size in m-2 ;; a-pmo-* pointer in m-a ;; a-pmh-* pointer in m-b ;; trashes m-c add-memory-board ((m-c) dpb m-1 (byte-field 4. 14.) a-zero) ((m-c) dpb m-minus-one (byte-field 4. 18.) a-c) ((OA-reg-low) dpb m-a oal-a-dest a-zero) ((a-garbage) m-c) ((m-a) M+1 m-a) ((OA-reg-low) dpb m-b oal-a-dest a-zero) ((a-garbage) m-2) ((m-b) M+1 m-b) (popj) ;; claim: (1) there is always a memory board in slot 4. ;; (2) memory boards are always 2 or 8 megs. ;; (3) mit people will put things other than memory in slot 3 ;; so we have to be careful in our test of what the board is. ;; just in case i dont fix this correctly by noon, i will do the ;; wired 8-meg board that Soley at MIT wants. ; this is 8 meg mode ; ((a-pmo-0) (a-constant (eval (ash #xf4000000 -10.)))) ; ((a-pmh-0) (a-constant 20000)) ; this is 2 2 meg mode ;;; ((a-pmo-0) (a-constant (eval (ash #xf4000000 -10.)))) ;;; ((a-pmh-0) (a-constant 4000)) ;;; ((a-pmo-1) (a-constant (eval (ash #xf3000000 -10.)))) ;;; ((a-pmh-1) (a-constant 4000)) ;;; ((a-tv-quad-slot) (a-constant #xf5)) ;;; ((a-number-of-data-mapping-registers-for-disk) (a-constant 10000.)) ;;; (popj) #-exp(end-comment) highest-kernal-ucode-location ))