238 lines
5.2 KiB
C
238 lines
5.2 KiB
C
/*-
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* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include "opt_ddb.h"
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/imgact.h>
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#include <sys/bio.h>
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#include <sys/buf.h>
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#include <sys/bus.h>
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#include <sys/cpu.h>
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#include <sys/cons.h>
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#include <sys/exec.h>
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#include <sys/ucontext.h>
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#include <sys/proc.h>
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#include <sys/kdb.h>
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#include <sys/ptrace.h>
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#include <sys/reboot.h>
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#include <sys/signalvar.h>
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#include <sys/sysent.h>
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#include <sys/sysproto.h>
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#include <sys/user.h>
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#include <vm/vm.h>
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#include <vm/vm_object.h>
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#include <vm/vm_page.h>
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#include <machine/clock.h>
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#include <machine/cpu.h>
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#include <machine/cpuregs.h>
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#include <machine/hwfunc.h>
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#include <machine/md_var.h>
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#include <machine/pmap.h>
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#include <machine/trap.h>
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#ifdef SMP
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#include <sys/smp.h>
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#include <machine/smp.h>
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#endif
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#include <mips/gxemul/mpreg.h>
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extern int *edata;
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extern int *end;
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void
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platform_cpu_init()
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{
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/* Nothing special */
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}
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static void
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mips_init(void)
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{
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int i;
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for (i = 0; i < 10; i++) {
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phys_avail[i] = 0;
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}
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/* phys_avail regions are in bytes */
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phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
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phys_avail[1] = ctob(realmem);
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dump_avail[0] = phys_avail[0];
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dump_avail[1] = phys_avail[1];
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physmem = realmem;
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init_param1();
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init_param2(physmem);
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mips_cpu_init();
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pmap_bootstrap();
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mips_proc0_init();
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mutex_init();
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kdb_init();
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#ifdef KDB
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if (boothowto & RB_KDB)
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kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
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#endif
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}
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/*
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* Perform a board-level soft-reset.
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*
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* XXXRW: Does gxemul have a moral equivalent to board-level reset?
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*/
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void
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platform_reset(void)
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{
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panic("%s: not yet", __func__);
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}
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void
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platform_start(__register_t a0, __register_t a1, __register_t a2,
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__register_t a3)
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{
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vm_offset_t kernend;
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uint64_t platform_counter_freq;
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int argc = a0;
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char **argv = (char **)a1;
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char **envp = (char **)a2;
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int i;
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/* clear the BSS and SBSS segments */
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kernend = (vm_offset_t)&end;
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memset(&edata, 0, kernend - (vm_offset_t)(&edata));
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mips_postboot_fixup();
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mips_pcpu0_init();
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/*
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* XXXRW: Support for the gxemul real-time clock required in order to
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* usefully determine our emulated timer frequency. Go with something
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* classic as the default in the mean time.
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*/
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platform_counter_freq = MIPS_DEFAULT_HZ;
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mips_timer_early_init(platform_counter_freq);
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cninit();
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printf("entry: platform_start()\n");
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bootverbose = 1;
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if (bootverbose) {
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printf("cmd line: ");
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for (i = 0; i < argc; i++)
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printf("%s ", argv[i]);
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printf("\n");
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if (envp != NULL) {
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printf("envp:\n");
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for (i = 0; envp[i]; i += 2)
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printf("\t%s = %s\n", envp[i], envp[i+1]);
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} else {
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printf("no envp.\n");
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}
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}
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realmem = btoc(GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_MEMORY));
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mips_init();
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mips_timer_init_params(platform_counter_freq, 0);
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}
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#ifdef SMP
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void
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platform_ipi_send(int cpuid)
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{
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GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_IPI_ONE, (1 << 16) | cpuid);
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}
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void
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platform_ipi_clear(void)
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{
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GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_IPI_READ, 0);
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}
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int
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platform_ipi_intrnum(void)
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{
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return (GXEMUL_MP_DEV_IPI_INTERRUPT - 2);
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}
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struct cpu_group *
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platform_smp_topo(void)
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{
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return (smp_topo_none());
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}
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void
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platform_init_ap(int cpuid)
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{
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int ipi_int_mask, clock_int_mask;
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/*
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* Unmask the clock and ipi interrupts.
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*/
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clock_int_mask = hard_int_mask(5);
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ipi_int_mask = hard_int_mask(platform_ipi_intrnum());
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set_intr_mask(ipi_int_mask | clock_int_mask);
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}
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void
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platform_cpu_mask(cpuset_t *mask)
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{
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unsigned i, n;
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n = GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_NCPUS);
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CPU_ZERO(mask);
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for (i = 0; i < n; i++)
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CPU_SET(i, mask);
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}
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int
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platform_processor_id(void)
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{
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return (GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_WHOAMI));
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}
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int
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platform_start_ap(int cpuid)
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{
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GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_STARTADDR, (intptr_t)mpentry);
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GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_START, cpuid);
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return (0);
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}
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#endif /* SMP */
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