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rk_platform.c revision 1.1 
      1 /* $NetBSD: rk_platform.c,v 1.1 2018/06/16 00:19:04 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2018 Jared McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include "opt_soc.h"
     30 #include "opt_multiprocessor.h"
     31 #include "opt_fdt_arm.h"
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: rk_platform.c,v 1.1 2018/06/16 00:19:04 jmcneill Exp $");
     35 
     36 #include <sys/param.h>
     37 #include <sys/bus.h>
     38 #include <sys/cpu.h>
     39 #include <sys/device.h>
     40 #include <sys/termios.h>
     41 
     42 #include <dev/fdt/fdtvar.h>
     43 #include <arm/fdt/arm_fdtvar.h>
     44 
     45 #include <uvm/uvm_extern.h>
     46 
     47 #include <machine/bootconfig.h>
     48 #include <arm/cpufunc.h>
     49 
     50 #include <arm/cortex/gtmr_var.h>
     51 
     52 #include <dev/ic/ns16550reg.h>
     53 #include <dev/ic/comreg.h>
     54 
     55 #include <arm/arm/psci.h>
     56 #include <arm/fdt/psci_fdt.h>
     57 
     58 #include <libfdt.h>
     59 
     60 extern struct arm32_bus_dma_tag arm_generic_dma_tag;
     61 extern struct bus_space arm_generic_bs_tag;
     62 extern struct bus_space arm_generic_a4x_bs_tag;
     63 
     64 static void
     65 rk_platform_init_attach_args(struct fdt_attach_args *faa)
     66 {
     67 	faa->faa_bst = &arm_generic_bs_tag;
     68 	faa->faa_a4x_bst = &arm_generic_a4x_bs_tag;
     69 	faa->faa_dmat = &arm_generic_dma_tag;
     70 }
     71 
     72 static void
     73 rk_platform_device_register(device_t self, void *aux)
     74 {
     75 }
     76 
     77 static void
     78 rk_platform_bootstrap(void)
     79 {
     80 	void *fdt_data = __UNCONST(fdtbus_get_data());
     81 
     82 	psci_fdt_bootstrap();
     83 
     84 	const int chosen_off = fdt_path_offset(fdt_data, "/chosen");
     85 	if (chosen_off < 0)
     86 		return;
     87 
     88 	if (match_bootconf_option(boot_args, "console", "fb")) {
     89 		const int framebuffer_off =
     90 		    fdt_path_offset(fdt_data, "/chosen/framebuffer");
     91 		if (framebuffer_off >= 0) {
     92 			const char *status = fdt_getprop(fdt_data,
     93 			    framebuffer_off, "status", NULL);
     94 			if (status == NULL || strncmp(status, "ok", 2) == 0) {
     95 				fdt_setprop_string(fdt_data, chosen_off,
     96 				    "stdout-path", "/chosen/framebuffer");
     97 			}
     98 		}
     99 	} else if (match_bootconf_option(boot_args, "console", "serial")) {
    100 		fdt_setprop_string(fdt_data, chosen_off,
    101 		    "stdout-path", "serial0:115200n8");
    102 	}
    103 }
    104 
    105 #ifdef SOC_RK3328
    106 
    107 #include <arm/rockchip/rk3328_platform.h>
    108 
    109 static const struct pmap_devmap *
    110 rk3328_platform_devmap(void)
    111 {
    112 	static const struct pmap_devmap devmap[] = {
    113 		DEVMAP_ENTRY(RK3328_CORE_VBASE,
    114 			     RK3328_CORE_PBASE,
    115 			     RK3328_CORE_SIZE),
    116 		DEVMAP_ENTRY_END
    117 	};
    118 
    119 	return devmap;
    120 }
    121 
    122 void rk3328_platform_early_putchar(char);
    123 
    124 void
    125 rk3328_platform_early_putchar(char c)
    126 {
    127 #ifdef CONSADDR
    128 #define CONSADDR_VA	((CONSADDR - RK3328_CORE_PBASE) + RK3328_CORE_VBASE)
    129 	volatile uint32_t *uartaddr = cpu_earlydevice_va_p() ?
    130 	    (volatile uint32_t *)CONSADDR_VA :
    131 	    (volatile uint32_t *)CONSADDR;
    132 
    133 	while ((le32toh(uartaddr[com_lsr]) & LSR_TXRDY) == 0)
    134 		;
    135 
    136 	uartaddr[com_data] = htole32(c);
    137 #undef CONSADDR_VA
    138 #endif
    139 }
    140 
    141 static u_int
    142 rk3328_platform_uart_freq(void)
    143 {
    144 	return RK3328_UART_FREQ;
    145 }
    146 
    147 static const struct arm_platform rk3328_platform = {
    148 	.devmap = rk3328_platform_devmap,
    149 	.bootstrap = rk_platform_bootstrap,
    150 	.init_attach_args = rk_platform_init_attach_args,
    151 	.early_putchar = rk3328_platform_early_putchar,
    152 	.device_register = rk_platform_device_register,
    153 	.reset = psci_fdt_reset,
    154 	.delay = gtmr_delay,
    155 	.uart_freq = rk3328_platform_uart_freq,
    156 };
    157 
    158 ARM_PLATFORM(rk3328, "rockchip,rk3328", &rk3328_platform);
    159 
    160 #endif /* SOC_RK3328 */
    161