0c8da0be6e
some of the IPI mechanisms used by the common MIPS SMP code so we could use the multicast IPI facilities, on GXemul as well as on several real hardware platforms, and the ability to have multiple hard IPI types.
239 lines
5.2 KiB
C
239 lines
5.2 KiB
C
/*-
|
|
* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_ddb.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/imgact.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/cpu.h>
|
|
#include <sys/cons.h>
|
|
#include <sys/exec.h>
|
|
#include <sys/ucontext.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/kdb.h>
|
|
#include <sys/ptrace.h>
|
|
#include <sys/reboot.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/sysproto.h>
|
|
#include <sys/user.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/vm_object.h>
|
|
#include <vm/vm_page.h>
|
|
#include <vm/vm_pager.h>
|
|
|
|
#include <machine/clock.h>
|
|
#include <machine/cpu.h>
|
|
#include <machine/cpuregs.h>
|
|
#include <machine/hwfunc.h>
|
|
#include <machine/md_var.h>
|
|
#include <machine/pmap.h>
|
|
#include <machine/trap.h>
|
|
|
|
#ifdef SMP
|
|
#include <sys/smp.h>
|
|
#include <machine/smp.h>
|
|
#endif
|
|
|
|
#include <mips/gxemul/mpreg.h>
|
|
|
|
extern int *edata;
|
|
extern int *end;
|
|
|
|
void
|
|
platform_cpu_init()
|
|
{
|
|
/* Nothing special */
|
|
}
|
|
|
|
static void
|
|
mips_init(void)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < 10; i++) {
|
|
phys_avail[i] = 0;
|
|
}
|
|
|
|
/* phys_avail regions are in bytes */
|
|
phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end);
|
|
phys_avail[1] = ctob(realmem);
|
|
|
|
dump_avail[0] = phys_avail[0];
|
|
dump_avail[1] = phys_avail[1];
|
|
|
|
physmem = realmem;
|
|
|
|
init_param1();
|
|
init_param2(physmem);
|
|
mips_cpu_init();
|
|
pmap_bootstrap();
|
|
mips_proc0_init();
|
|
mutex_init();
|
|
kdb_init();
|
|
#ifdef KDB
|
|
if (boothowto & RB_KDB)
|
|
kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger");
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Perform a board-level soft-reset.
|
|
*
|
|
* XXXRW: Does gxemul have a moral equivalent to board-level reset?
|
|
*/
|
|
void
|
|
platform_reset(void)
|
|
{
|
|
|
|
panic("%s: not yet", __func__);
|
|
}
|
|
|
|
void
|
|
platform_start(__register_t a0, __register_t a1, __register_t a2,
|
|
__register_t a3)
|
|
{
|
|
vm_offset_t kernend;
|
|
uint64_t platform_counter_freq;
|
|
int argc = a0;
|
|
char **argv = (char **)a1;
|
|
char **envp = (char **)a2;
|
|
int i;
|
|
|
|
/* clear the BSS and SBSS segments */
|
|
kernend = (vm_offset_t)&end;
|
|
memset(&edata, 0, kernend - (vm_offset_t)(&edata));
|
|
|
|
mips_postboot_fixup();
|
|
|
|
mips_pcpu0_init();
|
|
|
|
/*
|
|
* XXXRW: Support for the gxemul real-time clock required in order to
|
|
* usefully determine our emulated timer frequency. Go with something
|
|
* classic as the default in the mean time.
|
|
*/
|
|
platform_counter_freq = MIPS_DEFAULT_HZ;
|
|
mips_timer_early_init(platform_counter_freq);
|
|
|
|
cninit();
|
|
printf("entry: platform_start()\n");
|
|
|
|
bootverbose = 1;
|
|
if (bootverbose) {
|
|
printf("cmd line: ");
|
|
for (i = 0; i < argc; i++)
|
|
printf("%s ", argv[i]);
|
|
printf("\n");
|
|
|
|
if (envp != NULL) {
|
|
printf("envp:\n");
|
|
for (i = 0; envp[i]; i += 2)
|
|
printf("\t%s = %s\n", envp[i], envp[i+1]);
|
|
} else {
|
|
printf("no envp.\n");
|
|
}
|
|
}
|
|
|
|
realmem = btoc(GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_MEMORY));
|
|
mips_init();
|
|
|
|
mips_timer_init_params(platform_counter_freq, 0);
|
|
}
|
|
|
|
#ifdef SMP
|
|
void
|
|
platform_ipi_send(int cpuid)
|
|
{
|
|
GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_IPI_ONE, (1 << 16) | cpuid);
|
|
}
|
|
|
|
void
|
|
platform_ipi_clear(void)
|
|
{
|
|
GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_IPI_READ, 0);
|
|
}
|
|
|
|
int
|
|
platform_ipi_intrnum(void)
|
|
{
|
|
return (GXEMUL_MP_DEV_IPI_INTERRUPT - 2);
|
|
}
|
|
|
|
struct cpu_group *
|
|
platform_smp_topo(void)
|
|
{
|
|
return (smp_topo_none());
|
|
}
|
|
|
|
void
|
|
platform_init_ap(int cpuid)
|
|
{
|
|
int ipi_int_mask, clock_int_mask;
|
|
|
|
/*
|
|
* Unmask the clock and ipi interrupts.
|
|
*/
|
|
clock_int_mask = hard_int_mask(5);
|
|
ipi_int_mask = hard_int_mask(platform_ipi_intrnum());
|
|
set_intr_mask(ipi_int_mask | clock_int_mask);
|
|
}
|
|
|
|
void
|
|
platform_cpu_mask(cpuset_t *mask)
|
|
{
|
|
unsigned i, n;
|
|
|
|
n = GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_NCPUS);
|
|
CPU_ZERO(mask);
|
|
for (i = 0; i < n; i++)
|
|
CPU_SET(i, mask);
|
|
}
|
|
|
|
int
|
|
platform_processor_id(void)
|
|
{
|
|
return (GXEMUL_MP_DEV_READ(GXEMUL_MP_DEV_WHOAMI));
|
|
}
|
|
|
|
int
|
|
platform_start_ap(int cpuid)
|
|
{
|
|
GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_STARTADDR, (intptr_t)mpentry);
|
|
GXEMUL_MP_DEV_WRITE(GXEMUL_MP_DEV_START, cpuid);
|
|
return (0);
|
|
}
|
|
#endif /* SMP */
|