sys/arm/ti/ti_machdep.c

   1 /*-
   2  * Copyright (c) 1994-1998 Mark Brinicombe.
   3  * Copyright (c) 1994 Brini.
   4  * All rights reserved.
   5  *
   6  * This code is derived from software written for Brini by Mark Brinicombe
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Brini.
  19  * 4. The name of the company nor the name of the author may be used to
  20  *    endorse or promote products derived from this software without specific
  21  *    prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
  24  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  25  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  26  * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
  36  */
  37
  38 #include "opt_platform.h"
  39
  40 #include <sys/cdefs.h>
  41 __FBSDID("$FreeBSD$");
  42
  43 #include <sys/param.h>
  44 #include <sys/systm.h>
  45 #include <sys/bus.h>
  46 #include <sys/devmap.h>
  47
  48 #include <vm/vm.h>
  49 #include <vm/pmap.h>
  50
  51 #include <machine/bus.h>
  52 #include <machine/machdep.h>
  53 #include <machine/platformvar.h>
  54
  55 #include <arm/ti/omap4/omap4_reg.h>
  56 #include <arm/ti/omap4/omap4_mp.h>
  57 #include <arm/ti/ti_cpuid.h>
  58
  59 #include "platform_if.h"
  60
  61 void (*ti_cpu_reset)(void) = NULL;
  62
  63 int _ti_chip = -1;
  64
  65 #if defined(SOC_OMAP4)
  66 static int
  67 omap4_attach(platform_t plat)
  68 {
  69         _ti_chip = CHIP_OMAP_4;
  70         return (0);
  71 }
  72 #endif
  73
  74 #if defined(SOC_TI_AM335X)
  75 static int
  76 ti_am335x_attach(platform_t plat)
  77 {
  78         _ti_chip = CHIP_AM335X;
  79         return (0);
  80 }
  81 #endif
  82
  83 static vm_offset_t
  84 ti_lastaddr(platform_t plat)
  85 {
  86
  87         return (devmap_lastaddr());
  88 }
  89
  90 /*
  91  * Construct static devmap entries to map out the most frequently used
  92  * peripherals using 1mb section mappings.
  93  */
  94 #if defined(SOC_OMAP4)
  95 static int
  96 ti_omap4_devmap_init(platform_t plat)
  97 {
  98         devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
  99         devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
 100         return (0);
 101 }
 102 #endif
 103
 104 #if defined(SOC_TI_AM335X)
 105 static int
 106 ti_am335x_devmap_init(platform_t plat)
 107 {
 108
 109         devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
 110         devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
 111         devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
 112         devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
 113         devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
 114         devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
 115         devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
 116         return (0);
 117 }
 118 #endif
 119
 120 static void
 121 ti_plat_cpu_reset(platform_t plat)
 122 {
 123         if (ti_cpu_reset)
 124                 (*ti_cpu_reset)();
 125         else
 126                 printf("no cpu_reset implementation\n");
 127 }
 128
 129 #if defined(SOC_OMAP4)
 130 static platform_method_t omap4_methods[] = {
 131         PLATFORMMETHOD(platform_attach,         omap4_attach),
 132         PLATFORMMETHOD(platform_devmap_init,    ti_omap4_devmap_init),
 133         PLATFORMMETHOD(platform_lastaddr,       ti_lastaddr),
 134         PLATFORMMETHOD(platform_cpu_reset,      ti_plat_cpu_reset),
 135
 136 #ifdef SMP
 137         PLATFORMMETHOD(platform_mp_start_ap,    omap4_mp_start_ap),
 138         PLATFORMMETHOD(platform_mp_setmaxid,    omap4_mp_setmaxid),
 139 #endif
 140         PLATFORMMETHOD_END,
 141 };
 142 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 200);
 143 #endif
 144
 145 #if defined(SOC_TI_AM335X)
 146 static platform_method_t am335x_methods[] = {
 147         PLATFORMMETHOD(platform_attach,         ti_am335x_attach),
 148         PLATFORMMETHOD(platform_devmap_init,    ti_am335x_devmap_init),
 149         PLATFORMMETHOD(platform_lastaddr,       ti_lastaddr),
 150         PLATFORMMETHOD(platform_cpu_reset,      ti_plat_cpu_reset),
 151
 152         PLATFORMMETHOD_END,
 153 };
 154
 155 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
 156 #endif