sys/arm/rockchip/rk32xx_machdep.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   3  *
   4  * Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include "opt_platform.h"
  29
  30 #include <sys/cdefs.h>
  31 __FBSDID("$FreeBSD$");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/bus.h>
  36 #include <sys/devmap.h>
  37 #include <sys/lock.h>
  38 #include <sys/reboot.h>
  39
  40 #include <vm/vm.h>
  41
  42 #include <machine/bus.h>
  43 #include <machine/fdt.h>
  44 #include <machine/intr.h>
  45 #include <machine/machdep.h>
  46 #include <machine/platformvar.h>
  47
  48 #include <dev/ofw/openfirm.h>
  49
  50 #include <arm/rockchip/rk32xx_mp.h>
  51
  52 #include "platform_if.h"
  53 #define CRU_PHYSBASE            0xFF760000
  54 #define CRU_SIZE                0x00010000
  55 #define  CRU_GLB_SRST_FST_VALUE  0x1B0
  56
  57 static platform_def_t rk3288w_platform;
  58
  59 static void
  60 rk32xx_late_init(platform_t plat)
  61 {
  62
  63 }
  64
  65 /*
  66  * Set up static device mappings.
  67  */
  68 static int
  69 rk32xx_devmap_init(platform_t plat)
  70 {
  71
  72         devmap_add_entry(0xFF000000, 0x00E00000);
  73         return (0);
  74 }
  75
  76 static void
  77 rk32xx_cpu_reset(platform_t plat)
  78 {
  79         bus_space_handle_t cru;
  80
  81         printf("Resetting...\n");
  82         bus_space_map(fdtbus_bs_tag, CRU_PHYSBASE, CRU_SIZE, 0, &cru);
  83
  84         spinlock_enter();
  85         dsb();
  86         /* Generate 'first global software reset' */
  87         bus_space_write_4(fdtbus_bs_tag, cru, CRU_GLB_SRST_FST_VALUE, 0xfdb9);
  88         while(1)
  89                 ;
  90 }
  91
  92 /*
  93  * Early putc routine for EARLY_PRINTF support.  To use, add to kernel config:
  94  *   option SOCDEV_PA=0xFF600000
  95  *   option SOCDEV_VA=0x70000000
  96  *   option EARLY_PRINTF
  97  */
  98 #if 0
  99 #ifdef EARLY_PRINTF
 100 static void
 101 rk32xx_early_putc(int c)
 102 {
 103
 104         volatile uint32_t * UART_STAT_REG = (uint32_t *)(0x7009007C);
 105         volatile uint32_t * UART_TX_REG   = (uint32_t *)(0x70090000);
 106         const uint32_t      UART_TXRDY    = (1 << 2);
 107         while ((*UART_STAT_REG & UART_TXRDY) == 0)
 108                 continue;
 109         *UART_TX_REG = c;
 110 }
 111 early_putc_t *early_putc = rk32xx_early_putc;
 112 #endif
 113 #endif
 114 static platform_method_t rk32xx_methods[] = {
 115         PLATFORMMETHOD(platform_devmap_init,    rk32xx_devmap_init),
 116         PLATFORMMETHOD(platform_late_init,      rk32xx_late_init),
 117         PLATFORMMETHOD(platform_cpu_reset,      rk32xx_cpu_reset),
 118
 119 #ifdef SMP
 120         PLATFORMMETHOD(platform_mp_start_ap,    rk32xx_mp_start_ap),
 121         PLATFORMMETHOD(platform_mp_setmaxid,    rk32xx_mp_setmaxid),
 122 #endif
 123         PLATFORMMETHOD_END,
 124 };
 125 FDT_PLATFORM_DEF2(rk32xx, rk3288,  "RK3288",  0, "rockchip,rk3288",  200);
 126 FDT_PLATFORM_DEF2(rk32xx, rk3288w, "RK3288W", 0, "rockchip,rk3288w", 200);