diff options
Diffstat (limited to 'qemu/roms/SLOF/board-qemu/slof/OF.fs')
| -rw-r--r-- | qemu/roms/SLOF/board-qemu/slof/OF.fs | 306 |
1 files changed, 306 insertions, 0 deletions
diff --git a/qemu/roms/SLOF/board-qemu/slof/OF.fs b/qemu/roms/SLOF/board-qemu/slof/OF.fs new file mode 100644 index 000000000..561d89225 --- /dev/null +++ b/qemu/roms/SLOF/board-qemu/slof/OF.fs @@ -0,0 +1,306 @@ +\ ***************************************************************************** +\ * Copyright (c) 2004, 2011 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 +\ ****************************************************************************/ + +\ The master file. Everything else is included into here. + +hex + +' ll-cr to cr + +#include "header.fs" + +#include "hvterm.fs" + +#include "base.fs" + +\ Set default load-base to 0x4000 +4000 to default-load-base + +\ Little-endian accesses. Also known as `wrong-endian'. +#include <little-endian.fs> + +: #join ( lo hi #bits -- x ) lshift or ; +: #split ( x #bits -- lo hi ) 2dup rshift dup >r swap lshift xor r> ; + +: blink ; +: reset-dual-emit ; +: console-clean-fifo ; +: bootmsg-nvupdate ; +: asm-cout 2drop drop ; + +#include "logging.fs" + +: log-string 2drop ; + +#include "bootmsg.fs" + +000 cp + +#include "exception.fs" + +: mm-log-warning 2drop ; + +: write-mm-log ( data length type -- status ) + 3drop 0 +; + +100 cp + +\ Input line editing. +#include "accept.fs" + +120 cp + +#include "dump.fs" + +cistack ciregs >r1 ! \ kernel wants a stack :-) + +140 cp + +#include "romfs.fs" + +200 cp + +#include <slof-logo.fs> + +201 cp + +#include <banner.fs> + +: .banner .slof-logo .banner ; + +220 cp + +DEFER find-boot-sector ( -- ) + +240 cp +\ Timebase frequency, in Hz. Start with a good default +\ Use device-tree later to fix it up +d# 512000000 VALUE tb-frequency \ default value - needed for "ms" to work +-1 VALUE cpu-frequency + +#include "helper.fs" +260 cp + +#include <timebase.fs> + +270 cp + +#include <fcode/evaluator.fs> + +2e0 cp + +#include <quiesce.fs> + +300 cp + +#include <usb/usb-static.fs> + +320 cp + +#include <scsi-loader.fs> + +340 cp + +#include "fdt.fs" + +360 cp + +#include <root.fs> + +370 cp + +: check-boot-menu + s" qemu,boot-menu" get-chosen IF + decode-int 1 = IF + ." Press F12 for boot menu." cr cr + THEN + 2drop + THEN +; +check-boot-menu + +380 cp + +\ Grab rtas from qemu +#include "rtas.fs" + +390 cp + +#include "virtio.fs" + +3f0 cp + +#include "tree.fs" + +800 cp + +#include "nvram.fs" + +880 cp + +#include "envvar.fs" +check-for-nvramrc + +890 cp + +#include "qemu-bootlist.fs" + +8a0 cp + +\ The client interface. +#include "client.fs" +\ ELF binary file format. +#include "elf.fs" +#include <loaders.fs> + +8a8 cp +CREATE version-str 10 ALLOT +0 value temp-ptr + +: dump-display-buffer + disp-ptr to temp-ptr + " SLOF **********************************************************************" terminal-write drop + cr + version-str get-print-version + version-str @ \ start + version-str 8 + @ \ end + over - terminal-write drop + " Press 's' to enter Open Firmware." terminal-write drop + cr cr + temp-ptr disp-size > IF + temp-ptr disp-size MOD + dup + prevga-disp-buf + swap disp-size swap - terminal-write drop + temp-ptr disp-size MOD + prevga-disp-buf swap 1 - terminal-write drop + ELSE + prevga-disp-buf temp-ptr terminal-write drop + THEN +; + +: enable-framebuffer-output ( -- ) +\ enable output on framebuffer + s" screen" find-alias ?dup IF + \ we need to open/close the screen device once + \ before "ticking" display-emit to emit + open-dev close-node + false to store-prevga? + s" display-emit" $find IF + to emit + dump-display-buffer + ELSE + 2drop + THEN + THEN +; + +enable-framebuffer-output + +8b0 cp + +\ Scan USB devices +usb-scan + +8c0 cp + +\ Claim remaining memory that is used by firmware: +romfs-base 400000 0 ' claim CATCH IF ." claim failed!" cr 2drop THEN drop + +8d0 cp + +: set-default-console + s" linux,stdout-path" get-chosen IF + decode-string + ." Using default console: " 2dup type cr + io + 2drop + ELSE + ." No console specified " + " screen" find-alias dup IF nip THEN + " keyboard" find-alias dup IF nip THEN + AND IF + ." using screen & keyboard" cr + " screen" output + " keyboard" input + ELSE + " hvterm" find-alias IF + drop + ." using hvterm" cr + " hvterm" io + ELSE + " /openprom" find-node ?dup IF + set-node + ." and no default found, creating dev-null" cr + " dev-null.fs" included + " devnull-console" io + 0 set-node + THEN + THEN + THEN + THEN +; +set-default-console + +8e0 cp + +\ Check if we are booting a kernel passed by qemu, in which case +\ we skip initializing some devices + +0 VALUE direct-ram-boot-base +0 VALUE direct-ram-boot-size + +: (boot-ram) + direct-ram-boot-size 0<> IF + ." Booting from memory..." cr + s" go-args 2@ " evaluate + direct-ram-boot-base 0 + s" true state-valid ! " evaluate + s" disable-watchdog go-64" evaluate + THEN +; + +8e8 cp + +: check-boot-from-ram + s" qemu,boot-kernel" get-chosen IF + decode-int -rot decode-int -rot ( n1 n2 p s ) + decode-int -rot decode-int -rot ( n1 n2 n3 n4 p s ) + 2drop + swap 20 << or to direct-ram-boot-size + swap 20 << or to direct-ram-boot-base + ." Detected RAM kernel at " direct-ram-boot-base . + ." (" direct-ram-boot-size . ." bytes) " + \ Override the boot-command word without touching the + \ nvram environment + s" boot-command" $create " (boot-ram)" env-string + THEN +; +check-boot-from-ram + +8ff cp + +#include <start-up.fs> + +." " \ Clear last checkpoint + +#include <boot.fs> + +cr .( Welcome to Open Firmware) +cr +#include "copyright-oss.fs" +cr cr + +\ this CATCH is to ensure the code bellow always executes: boot may ABORT! +' start-it CATCH drop + +cr ." Ready!" |