Date: Sat, 25 Aug 2012 08:31:21 +0000 (UTC) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r239671 - in head/sys: conf mips/beri mips/mips Message-ID: <201208250831.q7P8VLkT007389@svn.freebsd.org>
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Author: rwatson Date: Sat Aug 25 08:31:21 2012 New Revision: 239671 URL: http://svn.freebsd.org/changeset/base/239671 Log: Add preliminary support for the SRI International / University of Cambridge Bluespec Extensible RISC Implementation (BERI) processor. BERI is a 64-bit MIPS ISA soft CPU core that can be synthesised to Altera and Xilinx FPGAs, and is being used for CPU and OS research at several institutions. Sponsored by: DARPA, AFRL Added: head/sys/mips/beri/ head/sys/mips/beri/beri_machdep.c (contents, props changed) head/sys/mips/beri/files.beri (contents, props changed) head/sys/mips/beri/std.beri (contents, props changed) Modified: head/sys/conf/options.mips head/sys/mips/mips/machdep.c Modified: head/sys/conf/options.mips ============================================================================== --- head/sys/conf/options.mips Sat Aug 25 08:09:37 2012 (r239670) +++ head/sys/conf/options.mips Sat Aug 25 08:31:21 2012 (r239671) @@ -37,6 +37,7 @@ CPU_SB1 opt_global.h CPU_CNMIPS opt_global.h CPU_RMI opt_global.h CPU_NLM opt_global.h +CPU_BERI opt_global.h COMPAT_FREEBSD32 opt_compat.h Added: head/sys/mips/beri/beri_machdep.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/mips/beri/beri_machdep.c Sat Aug 25 08:31:21 2012 (r239671) @@ -0,0 +1,165 @@ +/*- + * 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 +} + +/* + * Perform a board-level soft-reset. + * + * XXXRW: BERI doesn't yet have a board-level soft-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; + 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: 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]); + + printf("memsize = %08x\n", memsize); + } + + realmem = btoc(memsize); + mips_init(); + + mips_timer_init_params(platform_counter_freq, 0); +} Added: head/sys/mips/beri/files.beri ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/mips/beri/files.beri Sat Aug 25 08:31:21 2012 (r239671) @@ -0,0 +1,4 @@ +# $FreeBSD$ +mips/beri/beri_machdep.c standard +mips/mips/intr_machdep.c standard +mips/mips/tick.c standard Added: head/sys/mips/beri/std.beri ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/mips/beri/std.beri Sat Aug 25 08:31:21 2012 (r239671) @@ -0,0 +1,4 @@ +# $FreeBSD$ +files "../beri/files.beri" + +cpu CPU_MIPS4KC Modified: head/sys/mips/mips/machdep.c ============================================================================== --- head/sys/mips/mips/machdep.c Sat Aug 25 08:09:37 2012 (r239670) +++ head/sys/mips/mips/machdep.c Sat Aug 25 08:31:21 2012 (r239671) @@ -346,7 +346,12 @@ mips_vector_init(void) bcopy(MipsTLBMiss, (void *)MIPS_UTLB_MISS_EXC_VEC, MipsTLBMissEnd - MipsTLBMiss); -#if defined(__mips_n64) || defined(CPU_RMI) || defined(CPU_NLM) + /* + * XXXRW: Why don't we install the XTLB handler for all 64-bit + * architectures? + */ +#if defined(__mips_n64) || defined(CPU_RMI) || defined(CPU_NLM) || defined (CPU_BERI) +/* Fake, but sufficient, for the 32-bit with 64-bit hardware addresses */ bcopy(MipsTLBMiss, (void *)MIPS_XTLB_MISS_EXC_VEC, MipsTLBMissEnd - MipsTLBMiss); #endif
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