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imx_snvs.c revision 1.1 
      1 /*	$NetBSD: imx_snvs.c,v 1.1 2020/12/23 14:42:38 skrll Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2014 Ryo Shimizu <ryo (at) nerv.org>
      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
     18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     19  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
     20  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     21  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     22  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     24  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
     25  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 /*
     30  * i.MX6 Secure Non-Volatile Storage
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: imx_snvs.c,v 1.1 2020/12/23 14:42:38 skrll Exp $");
     35 
     36 #include <sys/bus.h>
     37 #include <sys/device.h>
     38 #include <sys/param.h>
     39 
     40 #include <dev/fdt/fdtvar.h>
     41 
     42 #include <arm/imx/imxsnvsvar.h>
     43 
     44 int
     45 imxsnvs_match(device_t parent, struct cfdata *match, void *aux)
     46 {
     47 	const char * const compatible[] = {
     48 	    "fsl,sec-v4.0-mon",
     49 	     NULL
     50 	};
     51 	struct fdt_attach_args * const faa = aux;
     52 
     53 	return of_match_compatible(faa->faa_phandle, compatible);
     54 }
     55 
     56 void
     57 imxsnvs_attach(device_t parent, device_t self, void *aux)
     58 {
     59 	struct fdt_attach_args * const faa = aux;
     60 	const int phandle = faa->faa_phandle;
     61 	bus_addr_t addr;
     62 	bus_size_t size;
     63 
     64 	if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
     65 		aprint_error(": couldn't get registers\n");
     66 		return;
     67 	}
     68 
     69 	imxsnvs_attach_common(parent, self,
     70 	    faa->faa_bst, addr, size, 0, 0);
     71 }
     72 
     73