diff options
Diffstat (limited to 'sys/mips')
-rw-r--r-- | sys/mips/conf/GXEMUL | 52 | ||||
-rw-r--r-- | sys/mips/conf/GXEMUL.hints | 1 | ||||
-rw-r--r-- | sys/mips/gxemul/files.gxemul | 5 | ||||
-rw-r--r-- | sys/mips/gxemul/gxemul_machdep.c | 191 | ||||
-rw-r--r-- | sys/mips/gxemul/std.gxemul | 4 |
5 files changed, 253 insertions, 0 deletions
diff --git a/sys/mips/conf/GXEMUL b/sys/mips/conf/GXEMUL new file mode 100644 index 0000000..ba46206 --- /dev/null +++ b/sys/mips/conf/GXEMUL @@ -0,0 +1,52 @@ +# +# GXEMUL "oldtestmips" sample kernel configuration. +# +# $FreeBSD$ +# + +ident GXEMUL + +machine mips mips64eb +cpu CPU_MIPS4KC + +options HZ=100 + +makeoptions ARCH_FLAGS="-march=mips64 -mabi=64" + +makeoptions KERNLOADADDR=0xffffffff80100000 + +include "../gxemul/std.gxemul" + +hints "GXEMUL.hints" #Default places to look for devices. + +makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols + +makeoptions MODULES_OVERRIDE="" + +options DDB +options KDB + +options SCHED_ULE + +options FFS #Berkeley Fast Filesystem + +# Debugging for use in -current +#options DEADLKRES #Enable the deadlock resolver +options INVARIANTS #Enable calls of extra sanity checking +options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS +#options WITNESS #Enable checks to detect deadlocks and cycles +#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed + +# +# This kernel configuration uses an embedded 8MB memory root file system. +# Adjust the following path based on local requirements. +# +options MD_ROOT # MD is a potential root device +options MD_ROOT_SIZE=8192 +#makeoptions MFS_IMAGE=/local/scratch/rnw24/mdroot.img +options ROOTDEVNAME=\"ufs:md0\" + +device gxemul_cons +device md +device loop +device random diff --git a/sys/mips/conf/GXEMUL.hints b/sys/mips/conf/GXEMUL.hints new file mode 100644 index 0000000..e8c0da7 --- /dev/null +++ b/sys/mips/conf/GXEMUL.hints @@ -0,0 +1 @@ +# $FreeBSD$ diff --git a/sys/mips/gxemul/files.gxemul b/sys/mips/gxemul/files.gxemul new file mode 100644 index 0000000..12b7670 --- /dev/null +++ b/sys/mips/gxemul/files.gxemul @@ -0,0 +1,5 @@ +# $FreeBSD$ +dev/gxemul/cons/gxemul_cons.c optional gxemul_cons +mips/gxemul/gxemul_machdep.c standard +mips/mips/intr_machdep.c standard +mips/mips/tick.c standard diff --git a/sys/mips/gxemul/gxemul_machdep.c b/sys/mips/gxemul/gxemul_machdep.c new file mode 100644 index 0000000..4789873 --- /dev/null +++ b/sys/mips/gxemul/gxemul_machdep.c @@ -0,0 +1,191 @@ +/*- + * 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> + +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 +} + +void +platform_halt(void) +{ + +} + + +void +platform_identify(void) +{ + +} + +/* + * 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_trap_enter(void) +{ + +} + +void +platform_trap_exit(void) +{ + +} + +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; + unsigned int memsize = a3; + 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"); + + printf("envp:\n"); + for (i = 0; envp[i]; i += 2) + printf("\t%s = %s\n", envp[i], envp[i+1]); + + printf("memsize = %08x\n", memsize); + } + + realmem = btoc(memsize); + mips_init(); + + mips_timer_init_params(platform_counter_freq, 0); +} diff --git a/sys/mips/gxemul/std.gxemul b/sys/mips/gxemul/std.gxemul new file mode 100644 index 0000000..7fad324 --- /dev/null +++ b/sys/mips/gxemul/std.gxemul @@ -0,0 +1,4 @@ +# $FreeBSD$ +files "../gxemul/files.gxemul" + +cpu CPU_MIPS4KC |