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_machdep.h>
  56 #include <arm/ti/omap4/omap4_reg.h>
  57 #include <arm/ti/ti_cpuid.h>
  58
  59 #include "platform_if.h"
  60
  61 #if defined(SOC_OMAP4)
  62 #include "platform_pl310_if.h"
  63
  64 static platform_attach_t omap4_attach;
  65 static platform_devmap_init_t ti_omap4_devmap_init;
  66 #endif
  67 #if defined(SOC_TI_AM335X)
  68 static platform_attach_t ti_am335x_attach;
  69 static platform_devmap_init_t ti_am335x_devmap_init;
  70 #endif
  71 static platform_cpu_reset_t ti_plat_cpu_reset;
  72
  73 void (*ti_cpu_reset)(void) = NULL;
  74
  75 int _ti_chip = -1;
  76
  77 #if defined(SOC_OMAP4)
  78 static int
  79 omap4_attach(platform_t plat)
  80 {
  81         _ti_chip = CHIP_OMAP_4;
  82         return (0);
  83 }
  84 #endif
  85
  86 #if defined(SOC_TI_AM335X)
  87 static int
  88 ti_am335x_attach(platform_t plat)
  89 {
  90         _ti_chip = CHIP_AM335X;
  91         return (0);
  92 }
  93 #endif
  94
  95 /*
  96  * Construct static devmap entries to map out the most frequently used
  97  * peripherals using 1mb section mappings.
  98  */
  99 #if defined(SOC_OMAP4)
 100 static int
 101 ti_omap4_devmap_init(platform_t plat)
 102 {
 103         devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
 104         devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_CFG devices */
 105         return (0);
 106 }
 107 #endif
 108
 109 #if defined(SOC_TI_AM335X)
 110 static int
 111 ti_am335x_devmap_init(platform_t plat)
 112 {
 113
 114         devmap_add_entry(0x44C00000, 0x00400000); /* 4mb L4_WKUP devices*/
 115         devmap_add_entry(0x47400000, 0x00100000); /* 1mb USB            */
 116         devmap_add_entry(0x47800000, 0x00100000); /* 1mb mmchs2         */
 117         devmap_add_entry(0x48000000, 0x01000000); /*16mb L4_PER devices */
 118         devmap_add_entry(0x49000000, 0x00100000); /* 1mb edma3          */
 119         devmap_add_entry(0x49800000, 0x00300000); /* 3mb edma3          */
 120         devmap_add_entry(0x4A000000, 0x01000000); /*16mb L4_FAST devices*/
 121         return (0);
 122 }
 123 #endif
 124
 125 static void
 126 ti_plat_cpu_reset(platform_t plat)
 127 {
 128         if (ti_cpu_reset)
 129                 (*ti_cpu_reset)();
 130         else
 131                 printf("no cpu_reset implementation\n");
 132 }
 133
 134 #if defined(SOC_OMAP4)
 135 static platform_method_t omap4_methods[] = {
 136         PLATFORMMETHOD(platform_attach,         omap4_attach),
 137         PLATFORMMETHOD(platform_devmap_init,    ti_omap4_devmap_init),
 138         PLATFORMMETHOD(platform_cpu_reset,      ti_plat_cpu_reset),
 139
 140 #ifdef SMP
 141         PLATFORMMETHOD(platform_mp_start_ap,    omap4_mp_start_ap),
 142         PLATFORMMETHOD(platform_mp_setmaxid,    omap4_mp_setmaxid),
 143 #endif
 144
 145         PLATFORMMETHOD(platform_pl310_init,     omap4_pl310_init),
 146         PLATFORMMETHOD(platform_pl310_write_ctrl, omap4_pl310_write_ctrl),
 147         PLATFORMMETHOD(platform_pl310_write_debug, omap4_pl310_write_debug),
 148
 149         PLATFORMMETHOD_END,
 150 };
 151 FDT_PLATFORM_DEF(omap4, "omap4", 0, "ti,omap4430", 200);
 152 #endif
 153
 154 #if defined(SOC_TI_AM335X)
 155 static platform_method_t am335x_methods[] = {
 156         PLATFORMMETHOD(platform_attach,         ti_am335x_attach),
 157         PLATFORMMETHOD(platform_devmap_init,    ti_am335x_devmap_init),
 158         PLATFORMMETHOD(platform_cpu_reset,      ti_plat_cpu_reset),
 159
 160         PLATFORMMETHOD_END,
 161 };
 162
 163 FDT_PLATFORM_DEF(am335x, "am335x", 0, "ti,am33xx", 200);
 164 #endif