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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1986-1997, Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* standalone startup code for sun4u LP64 secondary booters.
*/
#include <sys/asm_linkage.h>
#include <sys/privregs.h>
#include <sys/stack.h>
#if defined(lint)
/*ARGSUSED*/
void
_start(void *a, ...)
{}
#else
.seg ".text"
.align 8
.global end
.global edata
.global main
.seg ".bss"
.align 8
_local_p1275cif:
.skip 8
!
! Create a stack just below _start.
!
#define STACK_SIZE 0x14000
.skip STACK_SIZE
.ebootstack: ! end --top-- of boot stack
!
! Enter here for all disk/secondary booters loaded by a bootblk program or
! inetboot loaded by OBP.
! Careful: don't touch %o4 until the save, since it contains the
! address of the IEEE 1275 SPARC v9 CIF handler; the linkage to the prom.
!
.seg ".text"
.global prom_exit_to_mon
.type prom_exit_to_mon, #function
ENTRY(_start)
!
! The stacks in bss now; use the stack we came in on (prom is supposed
! to call us with a minimum of an 8k stack, bzero bss (and thus our
! new stack), then switch to the new stack. Do all this without losing
! track of the p1275cif address cached in %o4.
!
save %sp, -SA(MINFRAME), %sp
!
! Zero the bss [edata to end]
!
setn edata, %g1, %o0
setn end, %g1, %i2
call bzero
sub %i2, %o0, %o1 ! size
restore %g0, %g0, %g0 ! Trivial restore
!
! Switch to our new stack.
!
setn (.ebootstack - STACK_BIAS), %g1, %o1
save %o1, -SA(MINFRAME), %sp
!
! Set supervisor mode, interrupt level >= 13, traps enabled
! We don't set PSTATE_AM even though all our addresses are under 4G.
!
wrpr %g0, PSTATE_PEF+PSTATE_PRIV+PSTATE_IE, %pstate
sethi %hi(_local_p1275cif), %o1
stx %i4, [%o1 + %lo(_local_p1275cif)]
call main ! main(prom-cookie)
mov %i4, %o0 ! SPARCV9/CIF
! print stupid error message here!
call prom_enter_mon ! can't happen .. :-)
nop
SET_SIZE(_start)
#endif /* lint */
#if defined(lint)
/* ARGSUSED */
void
exitto(int (*entrypoint)(void *romvec, void *dvec, void *bootops,
void *bootvec))
{}
/* ARGSUSED */
void
exitto64(int (*entrypoint)(void *romvec, void *dvec, void *bootops,
void *bootvec), void *bootvec)
{}
#else /* lint */
ENTRY(exitto)
!
! Setup args for client.
!
! 32 bit frame, 64 bit sized
sub %g0, SA(MINFRAME) - STACK_BIAS, %g1
save %sp, %g1, %sp
sethi %hi(_local_p1275cif), %o0 ! 1275 CIF handler for callee.
ldx [%o0 + %lo(_local_p1275cif)], %o0
clr %o1 ! boot passes no dvec
setn bootops, %g1, %o2
sethi %hi(elfbootvec), %o3 ! pass elf bootstrap vector
ldx [%o3 + %lo(elfbootvec)], %o3
rdpr %pstate, %l1 ! Get the present pstate value
wrpr %l1, PSTATE_AM, %pstate ! Set PSTATE_AM = 1
jmpl %i0, %o7 ! call thru register to the standalone
mov %o0, %o4 ! 1210378: Pass cif in both %o0 & %o4
! eek - we returned -- switch back to a 64-bit frame
! then panic in a slightly informative way.
restore %g0, %g0, %g0
save %sp, -SA(MINFRAME), %sp
sethi %hi(.msg), %o0
call prom_panic
or %o0, %lo(.msg), %o0
.msg: .asciz "exitto returned from client program"
SET_SIZE(exitto)
ENTRY(exitto64)
!
! Setup args for client.
!
save %sp, -SA(MINFRAME), %sp
sethi %hi(_local_p1275cif), %o0 ! 1275 CIF handler for callee.
ldx [%o0 + %lo(_local_p1275cif)], %o0
mov %i1, %o3 ! bootvec
clr %o1 ! boot passes no dvec
setn bootops, %g1, %o2
jmpl %i0, %o7 ! call thru register to the standalone
mov %o0, %o4 ! 1210378: Pass cif in both %o0 & %o4
! eek - we returned -- panic in a slightly informative way.
sethi %hi(.msg64), %o0
call prom_panic
or %o0, %lo(.msg64), %o0
.msg64: .asciz "exitto64 returned from client program"
SET_SIZE(exitto64)
#endif /* lint */
#if defined(lint)
/*
* The interface for our 64-bit client program
* calling the 64-bit romvec OBP.
*/
#include <sys/promif.h>
#include <sys/prom_isa.h>
/* ARGSUSED */
int
client_handler(void *cif_handler, void *arg_array)
{ return (0); }
#else /* lint */
ENTRY(client_handler)
mov %o7, %g1
mov %o0, %g5
mov %o1, %o0
jmp %g5
mov %g1, %o7
SET_SIZE(client_handler)
#endif /* lint */
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