[src/trunk]: src/sys/arch/evbarm/cubie First attempt at initial evbarm suppor...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7ae4b7bc6882
branches:  trunk
changeset: 789696:7ae4b7bc6882
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Sep 03 18:01:33 2013 +0000

description:
First attempt at initial evbarm support for cubieboard (compile tested).

diffstat:

 sys/arch/evbarm/cubie/cubie_machdep.c |  685 ++++++++++++++++++++++++++++++++++
 sys/arch/evbarm/cubie/cubie_start.S   |  195 +++++++++
 sys/arch/evbarm/cubie/genassym.cf     |   38 +
 sys/arch/evbarm/cubie/platform.h      |   52 ++
 4 files changed, 970 insertions(+), 0 deletions(-)

diffs (truncated from 986 to 300 lines):

diff -r f16e52d907c5 -r 7ae4b7bc6882 sys/arch/evbarm/cubie/cubie_machdep.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/cubie/cubie_machdep.c     Tue Sep 03 18:01:33 2013 +0000
@@ -0,0 +1,685 @@
+/*     $NetBSD: cubie_machdep.c,v 1.1 2013/09/03 18:01:33 matt Exp $ */
+
+/*
+ * Machine dependent functions for kernel setup for TI OSK5912 board.
+ * Based on lubbock_machdep.c which in turn was based on iq80310_machhdep.c
+ *
+ * Copyright (c) 2002, 2003, 2005  Genetec Corporation.  All rights reserved.
+ * Written by Hiroyuki Bessho for Genetec Corporation.
+ *
+ * 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.
+ * 3. The name of Genetec Corporation may not be used to endorse or
+ *    promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY GENETEC CORPORATION ``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 GENETEC CORPORATION
+ * 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.
+ *
+ * Copyright (c) 2001 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Jason R. Thorpe for Wasabi Systems, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed for the NetBSD Project by
+ *     Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ *    or promote products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
+ * 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.
+ *
+ * Copyright (c) 1997,1998 Mark Brinicombe.
+ * Copyright (c) 1997,1998 Causality Limited.
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by Mark Brinicombe
+ *     for the NetBSD Project.
+ * 4. The name of the company nor the name of the author may be used to
+ *    endorse or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
+ *
+ * Copyright (c) 2007 Microsoft
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by Microsoft
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 CONTRIBUTERS 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>
+__KERNEL_RCSID(0, "$NetBSD: cubie_machdep.c,v 1.1 2013/09/03 18:01:33 matt Exp $");
+
+#include "opt_machdep.h"
+#include "opt_ddb.h"
+#include "opt_kgdb.h"
+#include "opt_ipkdb.h"
+#include "opt_md.h"
+#include "opt_com.h"
+#include "opt_allwinner.h"
+
+#include "com.h"
+#include "sdhc.h"
+#include "ukbd.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/bus.h>
+#include <sys/cpu.h>
+#include <sys/device.h>
+#include <sys/exec.h>
+#include <sys/kernel.h>
+#include <sys/ksyms.h>
+#include <sys/msgbuf.h>
+#include <sys/proc.h>
+#include <sys/reboot.h>
+#include <sys/termios.h>
+#include <sys/gpio.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <sys/conf.h>
+#include <dev/cons.h>
+#include <dev/md.h>
+
+#include <machine/db_machdep.h>
+#include <ddb/db_sym.h>
+#include <ddb/db_extern.h>
+#ifdef KGDB
+#include <sys/kgdb.h>
+#endif
+
+#include <machine/bootconfig.h>
+#include <arm/armreg.h>
+#include <arm/undefined.h>
+
+#include <arm/arm32/machdep.h>
+#include <arm/mainbus/mainbus.h>
+
+#include <dev/ic/ns16550reg.h>
+#include <dev/ic/comreg.h>
+
+#include <arm/allwinner/awin_reg.h>
+#include <arm/allwinner/awin_var.h>
+
+#include <evbarm/include/autoconf.h>
+#include <evbarm/cubie/platform.h>
+
+#include <dev/i2c/i2cvar.h>
+#include <dev/i2c/ddcreg.h>
+
+#include <dev/usb/ukbdvar.h>
+
+BootConfig bootconfig;         /* Boot config storage */
+static char bootargs[MAX_BOOT_STRING];
+char *boot_args = NULL;
+char *boot_file = NULL;
+
+u_int uboot_args[4] = { 0 };   /* filled in by cubie_start.S (not in bss) */
+
+/* Same things, but for the free (unused by the kernel) memory. */
+
+extern char KERNEL_BASE_phys[];
+extern char _end[];
+
+#if NCOM > 0
+int use_fb_console = false;
+#else
+int use_fb_console = true;
+#endif
+
+#ifdef CPU_CORTEXA7
+uint32_t arm_cnt_frq;
+#endif
+
+/*
+ * Macros to translate between physical and virtual for a subset of the
+ * kernel address space.  *Not* for general use.
+ */
+#define KERNEL_BASE_PHYS ((paddr_t)KERNEL_BASE_phys)
+#define        AWIN_CORE_VOFFSET       (AWIN_CORE_VBASE - AWIN_CORE_PBASE)
+
+/* Prototypes */
+
+void consinit(void);
+#ifdef KGDB
+static void kgdb_port_init(void);
+#endif
+
+static void init_clocks(void);
+static void cubie_device_register(device_t, void *);
+static void cubie_reset(void);
+static void awin_cpu_clk(void);
+static psize_t awin_memprobe(void);
+
+bs_protos(bs_notimpl);
+
+#if NCOM > 0
+#include <dev/ic/comreg.h>
+#include <dev/ic/comvar.h>
+#endif
+
+/*
+ * Static device mappings. These peripheral registers are mapped at
+ * fixed virtual addresses very early in initarm() so that we can use
+ * them while booting the kernel, and stay at the same address
+ * throughout whole kernel's life time.
+ *
+ * We use this table twice; once with bootstrap page table, and once
+ * with kernel's page table which we build up in initarm().
+ *
+ * Since we map these registers into the bootstrap page table using
+ * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map
+ * registers segment-aligned and segment-rounded in order to avoid
+ * using the 2nd page tables.
+ */
+
+#define        _A(a)   ((a) & ~L1_S_OFFSET)
+#define        _S(s)   (((s) + L1_S_SIZE - 1) & ~(L1_S_SIZE-1))
+
+static const struct pmap_devmap devmap[] = {
+       {
+               /*
+                * Map all of core area, this gets us everything and
+                * it's only 3MB.
+                */
+               .pd_va = _A(AWIN_CORE_VBASE),
+               .pd_pa = _A(AWIN_CORE_PBASE),
+               .pd_size = _S(AWIN_CORE_SIZE),
+               .pd_prot = VM_PROT_READ|VM_PROT_WRITE,
+               .pd_cache = PTE_NOCACHE
+       },
+       {
+               /*
+                * Map all 1MB of SRAM area.
+                */
+               .pd_va = _A(AWIN_SRAM_VBASE),
+               .pd_pa = _A(AWIN_SRAM_PBASE),
+               .pd_size = _S(AWIN_SRAM_SIZE),
+               .pd_prot = VM_PROT_READ|VM_PROT_WRITE,
+               .pd_cache = PTE_CACHE
+       },
+       {0}
+};
+
+#undef _A
+#undef _S
+
+#ifdef DDB
+static void
+cubie_db_trap(int where)
+{
+       static bool oldstate;
+
+       if (where) {
+               oldstate = awinwdt_enable(false);
+       } else {
+               awinwdt_enable(oldstate);
+       }
+}