389e4c3a2a
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)
172 lines
4.8 KiB
C
172 lines
4.8 KiB
C
/*-
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* Copyright (c) 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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* modification, are permitted provided that the following conditions
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* are met:
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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 AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#include <vm/vm.h>
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#include <vm/vm_kern.h>
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#include <machine/md_var.h>
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#include <machine/sal.h>
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#include <machine/smp.h>
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/*
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* IPIs are used more genericly than only
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* for inter-processor interrupts. Don't
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* make it a SMP specific thing...
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*/
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int ipi_vector[IPI_COUNT];
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static struct ia64_fdesc sal_fdesc;
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static sal_entry_t fake_sal;
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extern u_int64_t ia64_pal_entry;
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sal_entry_t *ia64_sal_entry = fake_sal;
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static struct ia64_sal_result
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fake_sal(u_int64_t a1, u_int64_t a2, u_int64_t a3, u_int64_t a4,
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u_int64_t a5, 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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return res;
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}
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static void
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setup_ipi_vectors(int ceil)
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{
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int ipi;
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ipi_vector[IPI_MCA_RENDEZ] = ceil - 0x10;
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ipi_vector[IPI_MCA_CMCV] = ceil - 0x30;
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ipi_vector[IPI_TEST] = ceil - 0x30 + 1;
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ipi = IPI_AST; /* First generic IPI. */
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ceil -= 0x20; /* First vector in group. */
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while (ipi < IPI_COUNT)
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ipi_vector[ipi++] = ceil++;
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}
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void
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ia64_sal_init(struct sal_system_table *saltab)
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{
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static int sizes[6] = {
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48, 32, 16, 32, 16, 16
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};
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u_int8_t *p;
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int i;
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if (memcmp(saltab->sal_signature, SAL_SIGNATURE, 4)) {
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printf("Bad signature for SAL System Table\n");
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return;
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}
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p = (u_int8_t *) (saltab + 1);
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for (i = 0; i < saltab->sal_entry_count; i++) {
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switch (*p) {
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case 0: {
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struct sal_entrypoint_descriptor *dp;
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dp = (struct sal_entrypoint_descriptor*)p;
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ia64_pal_entry = IA64_PHYS_TO_RR7(dp->sale_pal_proc);
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if (bootverbose)
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printf("PAL Proc at 0x%lx\n", ia64_pal_entry);
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sal_fdesc.func = IA64_PHYS_TO_RR7(dp->sale_sal_proc);
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sal_fdesc.gp = IA64_PHYS_TO_RR7(dp->sale_sal_gp);
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if (bootverbose)
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printf("SAL Proc at 0x%lx, GP at 0x%lx\n",
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sal_fdesc.func, sal_fdesc.gp);
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ia64_sal_entry = (sal_entry_t *) &sal_fdesc;
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break;
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}
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case 5: {
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struct sal_ap_wakeup_descriptor *dp;
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#ifdef SMP
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struct ia64_sal_result result;
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#endif
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dp = (struct sal_ap_wakeup_descriptor*)p;
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if (dp->sale_mechanism != 0) {
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printf("SAL: unsupported AP wake-up mechanism "
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"(%d)\n", dp->sale_mechanism);
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break;
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}
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if (dp->sale_vector < 0x10 || dp->sale_vector > 0xff) {
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printf("SAL: invalid AP wake-up vector "
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"(0x%lx)\n", dp->sale_vector);
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break;
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}
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/*
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* SAL documents that the wake-up vector should be
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* high (close to 255). The MCA rendezvous vector
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* should be less than the wake-up vector, but still
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* "high". We use the following priority assignment:
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* Wake-up: priority of the sale_vector
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* Rendezvous: priority-1
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* Generic IPIs: priority-2
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* Special IPIs: priority-3
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* Consequently, the wake-up priority should be at
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* least 4 (ie vector >= 0x40).
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*/
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if (dp->sale_vector < 0x40) {
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printf("SAL: AP wake-up vector too low "
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"(0x%lx)\n", dp->sale_vector);
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break;
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}
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if (bootverbose)
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printf("SAL: AP wake-up vector: 0x%lx\n",
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dp->sale_vector);
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ipi_vector[IPI_AP_WAKEUP] = dp->sale_vector;
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setup_ipi_vectors(dp->sale_vector & 0xf0);
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#ifdef SMP
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result = ia64_sal_entry(SAL_SET_VECTORS,
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SAL_OS_BOOT_RENDEZ,
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ia64_tpa(FDESC_FUNC(os_boot_rendez)),
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ia64_tpa(FDESC_GP(os_boot_rendez)),
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0, 0, 0, 0);
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#endif
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break;
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}
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}
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p += sizes[*p];
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}
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if (ipi_vector[IPI_AP_WAKEUP] == 0)
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setup_ipi_vectors(0xf0);
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}
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