freebsd-dev/sys/mips/beri/beri_machdep.c
Jeff Roberson 2194393787 Move phys_avail definition into MI code. It is consumed in the MI layer and
doing so adds more flexibility with less redundant code.

Reviewed by:	jhb, markj, kib
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D21250
2019-08-16 00:45:14 +00:00

280 lines
7.0 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org>
* Copyright (c) 2012-2014 Robert N. M. Watson
* All rights reserved.
*
* This software was developed by SRI International and the University of
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
* ("CTSRD"), as part of the DARPA CRASH research programme.
*
* 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 "opt_platform.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/linker.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>
#ifdef FDT
#include <dev/fdt/fdt_common.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_subr.h>
#endif
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/vm_object.h>
#include <vm/vm_page.h>
#include <vm/vm_phys.h>
#include <machine/bootinfo.h>
#include <machine/clock.h>
#include <machine/cpu.h>
#include <machine/cpuregs.h>
#include <machine/hwfunc.h>
#include <machine/md_var.h>
#include <machine/metadata.h>
#include <machine/pmap.h>
#include <machine/trap.h>
extern int *edata;
extern int *end;
void
platform_cpu_init()
{
/* Nothing special */
}
static void
mips_init(void)
{
int i;
#ifdef FDT
struct mem_region mr[FDT_MEM_REGIONS];
uint64_t val;
int mr_cnt;
int j;
#endif
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;
#ifdef FDT
if (fdt_get_mem_regions(mr, &mr_cnt, &val) == 0) {
physmem = btoc(val);
KASSERT((phys_avail[0] >= mr[0].mr_start) && \
(phys_avail[0] < (mr[0].mr_start + mr[0].mr_size)),
("First region is not within FDT memory range"));
/* Limit size of the first region */
phys_avail[1] = (mr[0].mr_start + MIN(mr[0].mr_size, ctob(realmem)));
dump_avail[1] = phys_avail[1];
/* Add the rest of regions */
for (i = 1, j = 2; i < mr_cnt; i++, j+=2) {
phys_avail[j] = mr[i].mr_start;
phys_avail[j+1] = (mr[i].mr_start + mr[i].mr_size);
dump_avail[j] = phys_avail[j];
dump_avail[j+1] = phys_avail[j+1];
}
}
#endif
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.
*/
void
platform_reset(void)
{
/* XXX SMP will likely require us to do more. */
__asm__ __volatile__(
"mfc0 $k0, $12\n\t"
"li $k1, 0x00100000\n\t"
"or $k0, $k0, $k1\n\t"
"mtc0 $k0, $12\n");
for( ; ; )
__asm__ __volatile("wait");
}
void
platform_start(__register_t a0, __register_t a1, __register_t a2,
__register_t a3)
{
struct bootinfo *bootinfop;
vm_offset_t kernend;
uint64_t platform_counter_freq;
int argc = a0;
char **argv = (char **)a1;
char **envp = (char **)a2;
long memsize;
#ifdef FDT
vm_offset_t dtbp;
void *kmdp;
#endif
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();
/*
* Over time, we've changed out boot-time binary interface for the
* kernel. Miniboot simply provides a 'memsize' in a3, whereas the
* FreeBSD boot loader provides a 'bootinfo *' in a3. While slightly
* grody, we support both here by detecting 'pointer-like' values in
* a3 and assuming physical memory can never be that back.
*
* XXXRW: Pull more values than memsize out of bootinfop -- e.g.,
* module information.
*/
if (a3 >= 0x9800000000000000ULL) {
bootinfop = (void *)a3;
memsize = bootinfop->bi_memsize;
preload_metadata = (caddr_t)bootinfop->bi_modulep;
} else {
bootinfop = NULL;
memsize = a3;
}
#ifdef FDT
/*
* Find the dtb passed in by the boot loader (currently fictional).
*/
kmdp = preload_search_by_type("elf kernel");
dtbp = MD_FETCH(kmdp, MODINFOMD_DTBP, vm_offset_t);
#if defined(FDT_DTB_STATIC)
/*
* In case the device tree blob was not retrieved (from metadata) try
* to use the statically embedded one.
*/
if (dtbp == (vm_offset_t)NULL)
dtbp = (vm_offset_t)&fdt_static_dtb;
#else
#error "Non-static FDT not yet supported on BERI"
#endif
if (OF_install(OFW_FDT, 0) == FALSE)
while (1);
if (OF_init((void *)dtbp) != 0)
while (1);
/*
* Configure more boot-time parameters passed in by loader.
*/
boothowto = MD_FETCH(kmdp, MODINFOMD_HOWTO, int);
init_static_kenv(MD_FETCH(kmdp, MODINFOMD_ENVP, char *), 0);
/*
* Get bootargs from FDT if specified.
*/
ofw_parse_bootargs();
#endif
/*
* XXXRW: We have no way to compare wallclock time to cycle rate on
* BERI, so for now assume we run at the MALTA default (100MHz).
*/
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");
printf("envp:\n");
for (i = 0; envp[i]; i += 2)
printf("\t%s = %s\n", envp[i], envp[i+1]);
if (bootinfop != NULL)
printf("bootinfo found at %p\n", bootinfop);
printf("memsize = %p\n", (void *)memsize);
}
realmem = btoc(memsize);
mips_init();
mips_timer_init_params(platform_counter_freq, 0);
}