dc00c828e3
and instead add platform, firmware and EFI stubs to the loader. The net effect of this change is that besides a special console and disk driver, the kernel has no knowledge of the simulator. This has the following advantages: o Simulator support is much harder to break, o It's easier to make use of more feature complete simulators. This would only need a change in the simulator specific loader, o Running SMP kernels within the simulator. Note that ski at this time does not simulate IPIs, so there's no way to start APs. The platform, firmware and EFI stubs describe the following hardware: o 4 CPU Itanium, o 128 MB RAM within the 4GB address space, o 64 MB RAM above the 4GB address space. NOTE: The stubs in the skiloader describe a machine that should in parts be defined by the simulator. Things like processor interrupt block and AP wakeup vector cannot be choosen at random because they require interpretation by the simulator. Currently the simulator is ignorant of this. This change introduces an unofficial SSC call SSC_SAL_SET_VECTORS which is ignored by the simulator. Tested with: ski (version 0.943 for linux)
118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* Copyright (c) 2003 Marcel Moolenaar
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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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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <machine/md_var.h>
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#include <machine/sal.h>
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#include <stand.h>
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#include "libski.h"
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extern void PalProc(void);
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static sal_entry_t SalProc;
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struct {
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struct sal_system_table header;
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struct sal_entrypoint_descriptor entry;
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struct sal_ap_wakeup_descriptor wakeup;
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} sal_systab = {
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/* Header. */
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{
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SAL_SIGNATURE,
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sizeof(sal_systab),
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{ 00, 03 }, /* Revision 3.0. */
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2, /* Number of decsriptors. */
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0, /* XXX checksum. */
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{ 0 },
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{ 00, 00 }, /* XXX SAL_A version. */
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{ 00, 00 }, /* XXX SAL_B version. */
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"FreeBSD",
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"Ski loader",
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{ 0 }
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},
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/* Entrypoint. */
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{
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0, /* Type=entrypoint descr. */
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{ 0 },
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0, /* XXX PalProc. */
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0, /* XXX SalProc. */
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0, /* XXX SalProc GP. */
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{ 0 }
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},
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/* AP wakeup. */
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{
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5, /* Type=AP wakeup descr. */
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0, /* External interrupt. */
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{ 0 },
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255 /* Wakeup vector. */
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}
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};
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static inline void
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puts(const char *s)
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{
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s = (const char *)((7UL << 61) | (u_long)s);
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while (*s)
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ski_cons_putchar(*s++);
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}
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static struct ia64_sal_result
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SalProc(u_int64_t a1, u_int64_t a2, u_int64_t a3, u_int64_t a4, u_int64_t a5,
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u_int64_t a6, u_int64_t a7, u_int64_t a8)
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{
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struct ia64_sal_result res;
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res.sal_status = -3;
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res.sal_result[0] = 0;
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res.sal_result[1] = 0;
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res.sal_result[2] = 0;
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if (a1 == SAL_FREQ_BASE) {
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res.sal_status = 0;
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res.sal_result[0] = 133338184;
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} else if (a1 == SAL_SET_VECTORS) {
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/* XXX unofficial SSC function. */
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ssc(a2, a3, a4, a5, SSC_SAL_SET_VECTORS);
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} else if (a1 != SAL_GET_STATE_INFO_SIZE) {
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puts("SAL: unimplemented function called\n");
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}
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return (res);
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}
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void
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sal_stub_init(void)
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{
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struct ia64_fdesc *fd;
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fd = (void*)PalProc;
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sal_systab.entry.sale_pal_proc = fd->func;
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fd = (void*)SalProc;
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sal_systab.entry.sale_sal_proc = fd->func;
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sal_systab.entry.sale_sal_gp = fd->gp;
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}
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