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\ *****************************************************************************
\ * 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
\ ****************************************************************************/
: strequal ( str1 len1 str2 len2 -- flag )
rot dup rot = IF comp 0= ELSE 2drop drop 0 THEN ;
400 cp
\ The root of the device tree and some of its kids.
" /" find-device
\ The following properties have been provided by the FDT from QEMU already,
\ so we do not have to create them on our own:
\ " QEMU" encode-string s" model" property
\ 2 encode-int s" #address-cells" property
\ 2 encode-int s" #size-cells" property
\ s" chrp" device-type
480 cp
\ See 3.6.5, and the PowerPC OF binding document.
new-device
s" mmu" 2dup device-name device-type
0 0 s" translations" property
: open true ;
: close ;
finish-device
device-end
4c0 cp
\ Fixup timebase frequency from device-tree
: fixup-tbfreq
" /cpus/@0" find-device
" timebase-frequency" get-node get-package-property IF
2drop
ELSE
decode-int to tb-frequency 2drop
THEN
device-end
;
fixup-tbfreq
4d0 cp
include fbuffer.fs
500 cp
: populate-vios ( -- )
\ Populate the /vdevice children with their methods
\ WARNING: Quite a few SLOFisms here like get-node, set-node, ...
." Populating /vdevice methods" cr
" /vdevice" find-device get-node child
BEGIN
dup 0 <>
WHILE
dup set-node
dup " compatible" rot get-package-property 0 = IF
drop dup from-cstring
2dup " hvterm1" strequal IF
" vio-hvterm.fs" included
THEN
2dup " IBM,v-scsi" strequal IF
" vio-vscsi.fs" included
THEN
2dup " IBM,l-lan" strequal IF
" vio-veth.fs" included
THEN
2dup " qemu,spapr-nvram" strequal IF
" rtas-nvram.fs" included
THEN
2drop
THEN
peer
REPEAT drop
device-end
;
\ Now do it
populate-vios
580 cp
5a0 cp
#include "pci-scan.fs"
: populate-pci-busses ( -- )
\ Populate the /pci* children with their methods
" /" find-device get-node child
BEGIN
dup 0 <>
WHILE
dup set-node
dup " name" rot get-package-property 0 = IF
drop dup from-cstring
2dup s" pci" strequal IF
s" pci-phb.fs" included
THEN
2drop
THEN
peer
REPEAT drop
device-end
;
populate-pci-busses
600 cp
: check-patch-kernel-sc1 ( -- )
\ At this point we can try our best to patch the kernel. This function
\ gets called from the "quiesce" call that kernels execute before they
\ take over the system.
\
\ Here we know that ciregs->r4 contains the return address that gets us
\ back into enter_prom inside the guest kernel.
\ We assume that within a range of +- 16MB of that pointer all sc 1
\ instructions inside of that kernel reside.
\ test_ins (instruction that tells us the kernel's endianness; we use the
\ return address back into the kernel here.)
ciregs >r4 @
\ test_ins + 16MB (end of search range)
dup 1000000 +
\ MAX(test_ins - 16MB, 0) (start of search range)
dup 2000000 < IF 0 ELSE dup 2000000 - THEN
swap
check-and-patch-sc1
;
\ Add sc 1 patching
' check-patch-kernel-sc1 add-quiesce-xt
\ Add rtas cleanup last
' rtas-quiesce add-quiesce-xt
640 cp
690 cp
6a0 cp
6a8 cp
6b0 cp
6b8 cp
6c0 cp
s" /cpus/@0" open-dev encode-int s" cpu" set-chosen
s" /memory@0" open-dev encode-int s" memory" set-chosen
6e0 cp
700 cp
\ See 3.5.
s" /openprom" find-device
s" SLOF," slof-build-id here swap rmove here slof-build-id nip $cat encode-string s" model" property
0 0 s" relative-addressing" property
device-end
s" /aliases" find-device
: open true ;
: close ;
device-end
s" /mmu" open-dev encode-int s" mmu" set-chosen
#include "available.fs"
\ Setup terminal IO
#include <term-io.fs>
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