sys/arm/allwinner/aw_machdep.c

   1 /*-
   2  * Copyright (c) 2012 Ganbold Tsagaankhuu <ganbold@freebsd.org>
   3  * Copyright (c) 2015-2016 Emmanuel Vadot <manu@freebsd.org>
   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  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29
  30  * from: FreeBSD: //depot/projects/arm/src/sys/arm/ti/ti_machdep.c
  31  */
  32
  33 #include "opt_ddb.h"
  34 #include "opt_platform.h"
  35
  36 #include <sys/cdefs.h>
  37 __FBSDID("$FreeBSD$");
  38
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/bus.h>
  42 #include <sys/devmap.h>
  43
  44 #include <vm/vm.h>
  45 #include <vm/pmap.h>
  46
  47 #include <machine/bus.h>
  48 #include <machine/machdep.h>
  49 #include <machine/platformvar.h>
  50
  51 #include <arm/allwinner/aw_mp.h>
  52 #include <arm/allwinner/aw_wdog.h>
  53 #include <arm/allwinner/aw_machdep.h>
  54
  55 #include "platform_if.h"
  56
  57 static platform_attach_t a10_attach;
  58 static platform_attach_t a13_attach;
  59 static platform_attach_t a20_attach;
  60 static platform_attach_t a31_attach;
  61 static platform_attach_t a31s_attach;
  62 static platform_attach_t a83t_attach;
  63 static platform_attach_t h3_attach;
  64 static platform_devmap_init_t allwinner_devmap_init;
  65 static platform_cpu_reset_t allwinner_cpu_reset;
  66
  67 static u_int soc_type;
  68 static u_int soc_family;
  69
  70 static int
  71 a10_attach(platform_t plat)
  72 {
  73         soc_type = ALLWINNERSOC_A10;
  74         soc_family = ALLWINNERSOC_SUN4I;
  75         return (0);
  76 }
  77
  78 static int
  79 a13_attach(platform_t plat)
  80 {
  81         soc_type = ALLWINNERSOC_A13;
  82         soc_family = ALLWINNERSOC_SUN5I;
  83         return (0);
  84 }
  85
  86 static int
  87 a20_attach(platform_t plat)
  88 {
  89         soc_type = ALLWINNERSOC_A20;
  90         soc_family = ALLWINNERSOC_SUN7I;
  91
  92         return (0);
  93 }
  94
  95 static int
  96 a31_attach(platform_t plat)
  97 {
  98         soc_type = ALLWINNERSOC_A31;
  99         soc_family = ALLWINNERSOC_SUN6I;
 100
 101         return (0);
 102 }
 103
 104 static int
 105 a31s_attach(platform_t plat)
 106 {
 107         soc_type = ALLWINNERSOC_A31S;
 108         soc_family = ALLWINNERSOC_SUN6I;
 109
 110         return (0);
 111 }
 112
 113 static int
 114 a33_attach(platform_t plat)
 115 {
 116         soc_type = ALLWINNERSOC_A33;
 117         soc_family = ALLWINNERSOC_SUN8I;
 118
 119         return (0);
 120 }
 121
 122 static int
 123 a83t_attach(platform_t plat)
 124 {
 125         soc_type = ALLWINNERSOC_A83T;
 126         soc_family = ALLWINNERSOC_SUN8I;
 127
 128         return (0);
 129 }
 130
 131 static int
 132 h3_attach(platform_t plat)
 133 {
 134         soc_type = ALLWINNERSOC_H3;
 135         soc_family = ALLWINNERSOC_SUN8I;
 136
 137         return (0);
 138 }
 139
 140 /*
 141  * Set up static device mappings.
 142  *
 143  * This covers all the on-chip device with 1MB section mappings, which is good
 144  * for performance (uses fewer TLB entries for device access).
 145  *
 146  * XXX It also covers a block of SRAM and some GPU (mali400) stuff that maybe
 147  * shouldn't be device-mapped.  The original code mapped a 4MB block, but
 148  * perhaps a 1MB block would be more appropriate.
 149  */
 150 static int
 151 allwinner_devmap_init(platform_t plat)
 152 {
 153
 154         devmap_add_entry(0x01C00000, 0x00400000); /* 4MB */
 155
 156         return (0);
 157 }
 158
 159 static void
 160 allwinner_cpu_reset(platform_t plat)
 161 {
 162         aw_wdog_watchdog_reset();
 163         printf("Reset failed!\n");
 164         while (1);
 165 }
 166
 167 /*
 168  * To use early printf on Allwinner SoC, add to kernel config
 169  * options SOCDEV_PA=0x01C00000
 170  * options SOCDEV_VA=0x10000000
 171  * options EARLY_PRINTF
 172  * And remove the if 0
 173 */
 174 #if 0
 175 #ifdef EARLY_PRINTF
 176 static void
 177 allwinner_early_putc(int c)
 178 {
 179         volatile uint32_t * UART_STAT_REG = (uint32_t *)0x1002807C;
 180         volatile uint32_t * UART_TX_REG   = (uint32_t *)0x10028000;
 181         const uint32_t      UART_TXRDY    = (1 << 2);
 182
 183         while ((*UART_STAT_REG & UART_TXRDY) == 0)
 184                 continue;
 185         *UART_TX_REG = c;
 186 }
 187 early_putc_t *early_putc = allwinner_early_putc;
 188 #endif /* EARLY_PRINTF */
 189 #endif
 190
 191 #if defined(SOC_ALLWINNER_A10)
 192 static platform_method_t a10_methods[] = {
 193         PLATFORMMETHOD(platform_attach,         a10_attach),
 194         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 195         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 196
 197         PLATFORMMETHOD_END,
 198 };
 199 FDT_PLATFORM_DEF(a10, "a10", 0, "allwinner,sun4i-a10", 200);
 200 #endif
 201
 202 #if defined(SOC_ALLWINNER_A13)
 203 static platform_method_t a13_methods[] = {
 204         PLATFORMMETHOD(platform_attach,         a13_attach),
 205         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 206         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 207
 208         PLATFORMMETHOD_END,
 209 };
 210 FDT_PLATFORM_DEF(a13, "a13", 0, "allwinner,sun5i-a13", 200);
 211 #endif
 212
 213 #if defined(SOC_ALLWINNER_A20)
 214 static platform_method_t a20_methods[] = {
 215         PLATFORMMETHOD(platform_attach,         a20_attach),
 216         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 217         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 218
 219 #ifdef SMP
 220         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 221         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 222 #endif
 223         PLATFORMMETHOD_END,
 224 };
 225 FDT_PLATFORM_DEF(a20, "a20", 0, "allwinner,sun7i-a20", 200);
 226 #endif
 227
 228 #if defined(SOC_ALLWINNER_A31)
 229 static platform_method_t a31_methods[] = {
 230         PLATFORMMETHOD(platform_attach,         a31_attach),
 231         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 232         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 233
 234 #ifdef SMP
 235         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 236         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 237 #endif
 238         PLATFORMMETHOD_END,
 239 };
 240 FDT_PLATFORM_DEF(a31, "a31", 0, "allwinner,sun6i-a31", 200);
 241 #endif
 242
 243 #if defined(SOC_ALLWINNER_A31S)
 244 static platform_method_t a31s_methods[] = {
 245         PLATFORMMETHOD(platform_attach,         a31s_attach),
 246         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 247         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 248
 249 #ifdef SMP
 250         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 251         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 252 #endif
 253         PLATFORMMETHOD_END,
 254 };
 255 FDT_PLATFORM_DEF(a31s, "a31s", 0, "allwinner,sun6i-a31s", 200);
 256 #endif
 257
 258 #if defined(SOC_ALLWINNER_A33)
 259 static platform_method_t a33_methods[] = {
 260         PLATFORMMETHOD(platform_attach,         a33_attach),
 261         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 262         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 263
 264 #ifdef SMP
 265         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 266         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 267 #endif
 268         PLATFORMMETHOD_END,
 269 };
 270 FDT_PLATFORM_DEF(a33, "a33", 0, "allwinner,sun8i-a33", 200);
 271 #endif
 272
 273 #if defined(SOC_ALLWINNER_A83T)
 274 static platform_method_t a83t_methods[] = {
 275         PLATFORMMETHOD(platform_attach,         a83t_attach),
 276         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 277         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 278
 279 #ifdef SMP
 280         PLATFORMMETHOD(platform_mp_start_ap,    a83t_mp_start_ap),
 281         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 282 #endif
 283         PLATFORMMETHOD_END,
 284 };
 285 FDT_PLATFORM_DEF(a83t, "a83t", 0, "allwinner,sun8i-a83t", 200);
 286 #endif
 287
 288 #if defined(SOC_ALLWINNER_H2PLUS)
 289 static platform_method_t h2_plus_methods[] = {
 290         PLATFORMMETHOD(platform_attach,         h3_attach),
 291         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 292         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 293
 294 #ifdef SMP
 295         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 296         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 297 #endif
 298         PLATFORMMETHOD_END,
 299 };
 300 FDT_PLATFORM_DEF(h2_plus, "h2_plus", 0, "allwinner,sun8i-h2-plus", 200);
 301 #endif
 302
 303 #if defined(SOC_ALLWINNER_H3)
 304 static platform_method_t h3_methods[] = {
 305         PLATFORMMETHOD(platform_attach,         h3_attach),
 306         PLATFORMMETHOD(platform_devmap_init,    allwinner_devmap_init),
 307         PLATFORMMETHOD(platform_cpu_reset,      allwinner_cpu_reset),
 308
 309 #ifdef SMP
 310         PLATFORMMETHOD(platform_mp_start_ap,    aw_mp_start_ap),
 311         PLATFORMMETHOD(platform_mp_setmaxid,    aw_mp_setmaxid),
 312 #endif
 313         PLATFORMMETHOD_END,
 314 };
 315 FDT_PLATFORM_DEF(h3, "h3", 0, "allwinner,sun8i-h3", 200);
 316 #endif
 317
 318
 319
 320 u_int
 321 allwinner_soc_type(void)
 322 {
 323         return (soc_type);
 324 }
 325
 326 u_int
 327 allwinner_soc_family(void)
 328 {
 329         return (soc_family);
 330 }