Add shims for calling PAL Code in physical mode.
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dfr
parent
1556b78bef
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@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2000 Doug Rabson
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* Copyright (c) 2000-2001 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -28,7 +28,23 @@
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#include <machine/asm.h>
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BSS(ia64_pal_entry, 8)
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.data
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.global ia64_pal_entry
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ia64_pal_entry: .quad ia64_call_pal_stub
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.text
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/*
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* Stub for running in simulation.
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*/
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ENTRY(ia64_call_pal_stub, 0)
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mov r8=-3
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tbit.nz p6,p7=r28,8 // static or stacked?
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;;
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(p6) br.ret.sptk.few rp
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(p7) br.cond.sptk.few rp
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END(ia64_call_pal_stub)
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/*
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* struct ia64_pal_result ia64_call_pal_static(u_int64_t proc,
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@ -75,6 +91,60 @@ psrsave = loc4
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END(ia64_call_pal_static)
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#ifdef _KERNEL
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/*
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* struct ia64_pal_result ia64_call_pal_static_physical(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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*/
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ENTRY(ia64_call_pal_static_physical, 4)
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.regstk 4,5,0,0
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palret = loc0
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entry = loc1
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rpsave = loc2
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pfssave = loc3
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psrsave = loc4
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alloc pfssave=ar.pfs,4,5,0,0
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;;
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mov rpsave=rp
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movl entry=@gprel(ia64_pal_entry)
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1: mov palret=ip // for return address
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;;
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add entry=entry,gp
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mov r28=in0 // procedure number
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;;
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ld8 entry=[entry] // read entry point
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mov r29=in1 // copy arguments
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mov r30=in2
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mov r31=in3
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;;
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dep entry=0,entry,61,3 // physical address
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dep palret=0,palret,61,3 // physical address
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br.call.sptk.many rp=ia64_physical_mode
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mov psrsave=ret0
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;;
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mov b6=entry
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add palret=2f-1b,palret // calculate return address
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;;
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mov b0=palret
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br.cond.sptk b6 // call into firmware
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;;
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2: mov r14=psrsave
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;;
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br.call.sptk.many rp=ia64_change_mode
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;;
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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br.ret.sptk rp
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END(ia64_call_pal_static_physical)
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#endif
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/*
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* struct ia64_pal_result ia64_call_pal_stacked(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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@ -107,7 +177,7 @@ psrsave = loc3
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rsm psr.i // disable interrupts
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;;
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br.call.sptk.many rp=b6 // call into firmware
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2: mov psr.l=psrsave
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mov psr.l=psrsave
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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@ -115,3 +185,52 @@ psrsave = loc3
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br.ret.sptk rp
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END(ia64_call_pal_stacked)
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#ifdef _KERNEL
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/*
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* struct ia64_pal_result ia64_call_pal_stacked_physical(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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*/
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ENTRY(ia64_call_pal_stacked_physical, 4)
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.regstk 4,4,4,0
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entry = loc0
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rpsave = loc1
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pfssave = loc2
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psrsave = loc3
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alloc pfssave=ar.pfs,4,4,4,0
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;;
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mov rpsave=rp
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movl entry=@gprel(ia64_pal_entry)
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;;
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add entry=entry,gp
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mov r28=in0 // procedure number
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mov out0=in0
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;;
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ld8 entry=[entry] // read entry point
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mov out1=in1 // copy arguments
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mov out2=in2
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mov out3=in3
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;;
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dep entry=0,entry,61,3 // physical address
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br.call.sptk.many rp=ia64_physical_mode
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mov psrsave=ret0
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;;
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mov b6=entry
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;;
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br.call.sptk.many rp=b6 // call into firmware
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;;
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mov r14=psrsave
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;;
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br.call.sptk.many rp=ia64_change_mode
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;;
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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br.ret.sptk rp
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END(ia64_call_pal_stacked_physical)
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#endif
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@ -1,5 +1,5 @@
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/*-
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* Copyright (c) 2000 Doug Rabson
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* Copyright (c) 2000-2001 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -28,7 +28,23 @@
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#include <machine/asm.h>
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BSS(ia64_pal_entry, 8)
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.data
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.global ia64_pal_entry
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ia64_pal_entry: .quad ia64_call_pal_stub
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.text
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/*
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* Stub for running in simulation.
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*/
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ENTRY(ia64_call_pal_stub, 0)
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mov r8=-3
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tbit.nz p6,p7=r28,8 // static or stacked?
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;;
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(p6) br.ret.sptk.few rp
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(p7) br.cond.sptk.few rp
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END(ia64_call_pal_stub)
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/*
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* struct ia64_pal_result ia64_call_pal_static(u_int64_t proc,
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@ -75,6 +91,60 @@ psrsave = loc4
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END(ia64_call_pal_static)
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#ifdef _KERNEL
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/*
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* struct ia64_pal_result ia64_call_pal_static_physical(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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*/
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ENTRY(ia64_call_pal_static_physical, 4)
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.regstk 4,5,0,0
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palret = loc0
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entry = loc1
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rpsave = loc2
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pfssave = loc3
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psrsave = loc4
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alloc pfssave=ar.pfs,4,5,0,0
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;;
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mov rpsave=rp
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movl entry=@gprel(ia64_pal_entry)
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1: mov palret=ip // for return address
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;;
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add entry=entry,gp
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mov r28=in0 // procedure number
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;;
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ld8 entry=[entry] // read entry point
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mov r29=in1 // copy arguments
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mov r30=in2
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mov r31=in3
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;;
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dep entry=0,entry,61,3 // physical address
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dep palret=0,palret,61,3 // physical address
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br.call.sptk.many rp=ia64_physical_mode
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mov psrsave=ret0
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;;
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mov b6=entry
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add palret=2f-1b,palret // calculate return address
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;;
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mov b0=palret
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br.cond.sptk b6 // call into firmware
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;;
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2: mov r14=psrsave
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;;
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br.call.sptk.many rp=ia64_change_mode
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;;
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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br.ret.sptk rp
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END(ia64_call_pal_static_physical)
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#endif
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/*
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* struct ia64_pal_result ia64_call_pal_stacked(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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@ -107,7 +177,7 @@ psrsave = loc3
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rsm psr.i // disable interrupts
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;;
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br.call.sptk.many rp=b6 // call into firmware
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2: mov psr.l=psrsave
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mov psr.l=psrsave
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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@ -115,3 +185,52 @@ psrsave = loc3
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br.ret.sptk rp
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END(ia64_call_pal_stacked)
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#ifdef _KERNEL
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/*
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* struct ia64_pal_result ia64_call_pal_stacked_physical(u_int64_t proc,
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* u_int64_t arg1, u_int64_t arg2, u_int64_t arg3)
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*/
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ENTRY(ia64_call_pal_stacked_physical, 4)
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.regstk 4,4,4,0
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entry = loc0
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rpsave = loc1
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pfssave = loc2
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psrsave = loc3
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alloc pfssave=ar.pfs,4,4,4,0
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;;
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mov rpsave=rp
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movl entry=@gprel(ia64_pal_entry)
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;;
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add entry=entry,gp
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mov r28=in0 // procedure number
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mov out0=in0
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;;
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ld8 entry=[entry] // read entry point
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mov out1=in1 // copy arguments
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mov out2=in2
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mov out3=in3
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;;
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dep entry=0,entry,61,3 // physical address
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br.call.sptk.many rp=ia64_physical_mode
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mov psrsave=ret0
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;;
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mov b6=entry
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;;
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br.call.sptk.many rp=b6 // call into firmware
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;;
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mov r14=psrsave
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;;
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br.call.sptk.many rp=ia64_change_mode
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;;
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mov rp=rpsave
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mov ar.pfs=pfssave
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;;
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br.ret.sptk rp
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END(ia64_call_pal_stacked_physical)
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#endif
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