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      1 /*	$NetBSD: autoconf.c,v 1.10 2022/02/12 03:24:34 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2002 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Simon Burge for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #include <sys/cdefs.h>
     39 __KERNEL_RCSID(0, "$NetBSD: autoconf.c,v 1.10 2022/02/12 03:24:34 riastradh Exp $");
     40 
     41 #include <sys/param.h>
     42 #include <sys/systm.h>
     43 #include <sys/buf.h>
     44 #include <sys/conf.h>
     45 #include <sys/device.h>
     46 
     47 #include <net/if_ether.h>
     48 
     49 #include <mips/cpu.h>
     50 #include <mips/locore.h>
     51 
     52 #include <evbmips/cavium/octeon_uboot.h>
     53 
     54 static void	findroot(void);
     55 
     56 void
     57 cpu_configure(void)
     58 {
     59 
     60 	intr_init();
     61 
     62 	/* Kick off autoconfiguration. */
     63 	(void)splhigh();
     64 	if (config_rootfound("mainbus", NULL) == NULL)
     65 		panic("no mainbus found");
     66 
     67 	/* XXX need this? */
     68 	(void)spl0();
     69 	KDASSERT(mips_cp0_status_read() & MIPS_SR_INT_IE);
     70 }
     71 
     72 void
     73 cpu_rootconf(void)
     74 {
     75 
     76 #ifndef MEMORY_DISK_IS_ROOT
     77 	findroot();
     78 #endif
     79 
     80 	printf("boot device: %s\n",
     81 		booted_device ? device_xname(booted_device) : "<unknown>");
     82 
     83 	rootconf();
     84 }
     85 
     86 extern int	netboot;
     87 
     88 static void
     89 findroot(void)
     90 {
     91 	device_t dv;
     92 	deviter_t di;
     93 
     94 	if (booted_device)
     95 		return;
     96 
     97 	if (rootspec && *rootspec) {
     98 		/* if we get passed root=octethN, convert to cnmacN */
     99 		if (strncmp(rootspec, "octeth", 6) == 0) {
    100 			/* allow for up to 100 interfaces */
    101 			static char buf[sizeof("cnmacXX")];
    102 			const char *cp = &rootspec[strlen("octeth")];
    103 
    104 			KASSERT(strlen(cp) < sizeof("XX"));
    105 			snprintf(buf, sizeof(buf), "cnmac%s", cp);
    106 			rootspec = buf;
    107 		}
    108 
    109 		/* XXX hard coded "cnmac" for network boot */
    110 		if (strncmp(rootspec, "cnmac", 5) == 0) {
    111 			rootfstype = "nfs";
    112 			netboot = 1;
    113 			return;
    114 		}
    115 
    116 		/*
    117 		 * XXX
    118 		 * Assume that if the root spec is not a cnmac, it'll
    119 		 * be a sd. handled below.  Should be fixed to handle
    120 		 * multiple sd devices.
    121 		 */
    122 	}
    123 
    124 	if (netboot == 0) {
    125 		/* if no root device specified, default to a "sd" device */
    126 		for (dv = deviter_first(&di, DEVITER_F_ROOT_FIRST); dv != NULL;
    127 		     dv = deviter_next(&di)) {
    128 			if (device_class(dv) == DV_DISK &&
    129 			    device_is_a(dv, "sd"))
    130 				    booted_device = dv;
    131 		}
    132 		deviter_release(&di);
    133 	}
    134 
    135 	/*
    136 	 * XXX Match up MBR boot specification with BSD disklabel for root?
    137 	 */
    138 	booted_partition = 0;
    139 
    140 	return;
    141 }
    142 
    143 static void
    144 prop_set_cnmac(device_t dev)
    145 {
    146 	prop_dictionary_t dict = device_properties(dev);
    147 	prop_data_t pd;
    148 	prop_number_t pn;
    149 	uint8_t enaddr[ETHER_ADDR_LEN];
    150 	uint32_t mac_lo;
    151 	int unit = device_unit(dev);
    152 
    153 	/* ethernet mac address */
    154 	memcpy(enaddr, octeon_btinfo.obt_mac_addr_base,
    155 	    sizeof(enaddr));
    156 	mac_lo = enaddr[3] << 16;
    157 	mac_lo += enaddr[4] << 8;
    158 	mac_lo += enaddr[5];
    159 	KASSERT(unit < octeon_btinfo.obt_mac_addr_count);
    160 	mac_lo += unit;
    161 	enaddr[3] = (mac_lo >> 16) & 0xff;
    162 	enaddr[4] = (mac_lo >> 8) & 0xff;
    163 	enaddr[5] = mac_lo & 0xff;
    164 	pd = prop_data_create_copy(enaddr, ETHER_ADDR_LEN);
    165 	KASSERT(pd != NULL);
    166 	prop_dictionary_set_and_rel(dict, "mac-address", pd);
    167 
    168 	/* ethernet phy address */
    169 	switch (octeon_btinfo.obt_board_type) {
    170 	case BOARD_TYPE_UBIQUITI_E100:
    171 	case BOARD_TYPE_UBIQUITI_E120:
    172 		pn = prop_number_create_signed(7 - unit);
    173 		break;
    174 	case BOARD_TYPE_UBIQUITI_E300:
    175 		pn = prop_number_create_signed(4 + device_unit(dev));
    176 		break;
    177 	default:
    178 		pn = prop_number_create_signed(-1);
    179 		break;
    180 	}
    181 	KASSERT(pn != NULL);
    182 	prop_dictionary_set_and_rel(dict, "phy-addr", pn);
    183 }
    184 
    185 static void
    186 prop_set_octeon_gmx(device_t dev)
    187 {
    188 	prop_dictionary_t dict = device_properties(dev);
    189 	prop_number_t tx, rx;
    190 
    191 	/* ethernet rgmii phy dependent timing parameters. */
    192 	tx = rx = NULL;
    193 	switch (octeon_btinfo.obt_board_type) {
    194 	case BOARD_TYPE_UBIQUITI_E100:
    195 	case BOARD_TYPE_UBIQUITI_E120:
    196 		tx = prop_number_create_signed(16);
    197 		rx = prop_number_create_signed(0);
    198 		break;
    199 	}
    200 	if (tx)
    201 		prop_dictionary_set_and_rel(dict, "rgmii-tx", tx);
    202 	if (rx)
    203 		prop_dictionary_set_and_rel(dict, "rgmii-rx", rx);
    204 }
    205 
    206 void
    207 device_register(device_t dev, void *aux)
    208 {
    209 
    210 	if ((booted_device == NULL) && (netboot == 1))
    211 		if (device_class(dev) == DV_IFNET)
    212 			booted_device = dev;
    213 
    214 	if (device_is_a(dev, "cnmac")) {
    215 		prop_set_cnmac(dev);
    216 	} else if (device_is_a(dev, "octgmx")) {
    217 		prop_set_octeon_gmx(dev);
    218 	}
    219 }
    220