19d3b47b92
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
278 lines
6.9 KiB
C
278 lines
6.9 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_object.h>
|
|
#include <vm/vm_page.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);
|
|
}
|