FreeBSD/Linux Kernel Cross Reference
sys/arm/rockchip/rk32xx_machdep.c

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2019 Michal Meloun <mmel@FreeBSD.org>
      *
      * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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.
     */
    
    #include "opt_platform.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/devmap.h>
    #include <sys/lock.h>
    #include <sys/reboot.h>
    
    #include <vm/vm.h>
    
    #include <machine/bus.h>
    #include <machine/fdt.h>
    #include <machine/intr.h>
    #include <machine/machdep.h>
    #include <machine/platformvar.h>
    
    #include <dev/ofw/openfirm.h>
    
    #include <arm/rockchip/rk32xx_mp.h>
    
    #include "platform_if.h"
    #define CRU_PHYSBASE            0xFF760000
    #define CRU_SIZE                0x00010000
    #define  CRU_GLB_SRST_FST_VALUE  0x1B0
    
    static platform_def_t rk3288w_platform;
    
    static void
    rk32xx_late_init(platform_t plat)
    {
    
    }
    
    /*
     * Set up static device mappings.
     */
    static int
    rk32xx_devmap_init(platform_t plat)
    {
    
            devmap_add_entry(0xFF000000, 0x00E00000);
            return (0);
    }
    
    static void
    rk32xx_cpu_reset(platform_t plat)
    {
            bus_space_handle_t cru;
    
            printf("Resetting...\n");
            bus_space_map(fdtbus_bs_tag, CRU_PHYSBASE, CRU_SIZE, 0, &cru);
    
            spinlock_enter();
            dsb();
            /* Generate 'first global software reset' */
            bus_space_write_4(fdtbus_bs_tag, cru, CRU_GLB_SRST_FST_VALUE, 0xfdb9);
            while(1)
                    ;
    }
    
    /*
     * Early putc routine for EARLY_PRINTF support.  To use, add to kernel config:
     *   option SOCDEV_PA=0xFF600000
     *   option SOCDEV_VA=0x70000000
     *   option EARLY_PRINTF
     */
    #if 0
    #ifdef EARLY_PRINTF
   static void
   rk32xx_early_putc(int c)
   {
   
           volatile uint32_t * UART_STAT_REG = (uint32_t *)(0x7009007C);
           volatile uint32_t * UART_TX_REG   = (uint32_t *)(0x70090000);
           const uint32_t      UART_TXRDY    = (1 << 2);
           while ((*UART_STAT_REG & UART_TXRDY) == 0)
                   continue;
           *UART_TX_REG = c;
   }
   early_putc_t *early_putc = rk32xx_early_putc;
   #endif
   #endif
   static platform_method_t rk32xx_methods[] = {
           PLATFORMMETHOD(platform_devmap_init,    rk32xx_devmap_init),
           PLATFORMMETHOD(platform_late_init,      rk32xx_late_init),
           PLATFORMMETHOD(platform_cpu_reset,      rk32xx_cpu_reset),
   
   #ifdef SMP
           PLATFORMMETHOD(platform_mp_start_ap,    rk32xx_mp_start_ap),
           PLATFORMMETHOD(platform_mp_setmaxid,    rk32xx_mp_setmaxid),
   #endif
           PLATFORMMETHOD_END,
   };
   FDT_PLATFORM_DEF2(rk32xx, rk3288,  "RK3288",  0, "rockchip,rk3288",  200);
   FDT_PLATFORM_DEF2(rk32xx, rk3288w, "RK3288W", 0, "rockchip,rk3288w", 200);

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