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      1 /*	$NetBSD: tx39.c,v 1.45 2014/03/26 17:53:36 christos Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: tx39.c,v 1.45 2014/03/26 17:53:36 christos Exp $");
     34 
     35 #include "opt_vr41xx.h"
     36 #include "opt_tx39xx.h"
     37 #include "m38813c.h"
     38 #include "tc5165buf.h"
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 #include <sys/intr.h>
     43 
     44 #include <uvm/uvm_extern.h>
     45 
     46 #include <mips/cache.h>
     47 #include <mips/locore.h>
     48 
     49 #include <machine/bootinfo.h> /* bootinfo */
     50 #include <machine/sysconf.h>  /* platform */
     51 
     52 #include <machine/platid.h>
     53 #include <machine/platid_mask.h>
     54 
     55 #include <machine/bus.h>
     56 
     57 #include <hpcmips/tx/tx39biureg.h>
     58 #include <hpcmips/tx/tx39reg.h>
     59 #include <hpcmips/tx/tx39var.h>
     60 #ifdef TX391X
     61 #include <hpcmips/tx/tx3912videovar.h>
     62 #endif
     63 
     64 #include <sys/termios.h>
     65 #include <sys/ttydefaults.h>
     66 #include <hpcmips/tx/tx39uartvar.h>
     67 #ifndef CONSPEED
     68 #define CONSPEED TTYDEF_SPEED
     69 #endif
     70 
     71 /* console keyboard */
     72 #if NM38813C > 0
     73 #include <hpcmips/dev/m38813cvar.h>
     74 #endif
     75 #if NTC5165BUF > 0
     76 #include <hpcmips/dev/tc5165bufvar.h>
     77 #endif
     78 
     79 struct tx_chipset_tag tx_chipset;
     80 
     81 void	tx_init(void);
     82 #if defined(VR41XX) && defined(TX39XX)
     83 #define	TX_INTR	tx_intr
     84 #else
     85 #define	TX_INTR	cpu_intr	/* locore_mips3 directly call this */
     86 #endif
     87 
     88 extern void TX_INTR(int, vaddr_t, uint32_t);
     89 
     90 void	tx39clock_cpuspeed(int *, int *);
     91 
     92 /* TX39-specific initialization vector */
     93 void	tx_cons_init(void);
     94 void    tx_fb_init(void **);
     95 void    tx_mem_init(paddr_t);
     96 void	tx_find_dram(paddr_t, paddr_t);
     97 void	tx_reboot(int, char *);
     98 
     99 void
    100 tx_init(void)
    101 {
    102 	tx_chipset_tag_t tc;
    103 	int model, rev;
    104 	int cpuclock;
    105 
    106 	tc = tx_conf_get_tag();
    107 	/*
    108 	 * Platform Specific Function Hooks
    109 	 */
    110 	platform.cpu_intr	= TX_INTR;
    111 	platform.cpu_idle	= NULL; /* not implemented yet */
    112 	platform.cons_init	= tx_cons_init;
    113 	platform.fb_init	= tx_fb_init;
    114 	platform.mem_init	= tx_mem_init;
    115 	platform.reboot		= tx_reboot;
    116 
    117 
    118 	model = MIPS_PRID_REV(mips_options.mips_cpu_id);
    119 
    120 	switch (model) {
    121 	default:
    122 		/* Unknown TOSHIBA TX39-series */
    123 		cpuname_printf("Unknown TOSHIBA TX39-series %x", model);
    124 		break;
    125 	case TMPR3912:
    126 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    127 
    128 		cpuname_printf("TOSHIBA TMPR3912 %d.%02d MHz",
    129 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    130 		tc->tc_chipset = __TX391X;
    131 		break;
    132 	case TMPR3922:
    133 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    134 		rev = tx_conf_read(tc, TX3922_REVISION_REG);
    135 
    136 		cpuname_printf("TOSHIBA TMPR3922 rev. %x.%x "
    137 		    "%d.%02d MHz", (rev >> 4) & 0xf, rev & 0xf,
    138 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    139 		tc->tc_chipset = __TX392X;
    140 		break;
    141 	}
    142 }
    143 
    144 void
    145 tx_fb_init(void **kernend)
    146 {
    147 #ifdef TX391X
    148 	paddr_t fb_end;
    149 
    150 	fb_end = MIPS_KSEG0_TO_PHYS(mem_clusters[0].start +
    151 	    mem_clusters[0].size - 1);
    152 	tx3912video_init(MIPS_KSEG0_TO_PHYS(*kernend), &fb_end);
    153 
    154 	/* Skip V-RAM area */
    155 	*kernend = (void *)MIPS_PHYS_TO_KSEG0(fb_end);
    156 #endif /* TX391X */
    157 #ifdef TX392X
    158 	/*
    159 	 *  Plum V-RAM isn't accessible until pmap_bootstrap,
    160 	 * at this time, frame buffer device is disabled.
    161 	 */
    162 	bootinfo->fb_addr = 0;
    163 #endif /* TX392X */
    164 }
    165 
    166 void
    167 tx_mem_init(paddr_t kernend)
    168 {
    169 
    170 	mem_clusters[0].start = 0;
    171 	mem_clusters[0].size = kernend;
    172 	mem_cluster_cnt = 1;
    173 	/* search DRAM bank 0 */
    174 	tx_find_dram(kernend, 0x02000000);
    175 
    176 	/* search DRAM bank 1 */
    177 	tx_find_dram(0x02000000, 0x04000000);
    178 }
    179 
    180 void
    181 tx_find_dram(paddr_t start, paddr_t end)
    182 {
    183 	char *page, *startaddr, *endaddr;
    184 	uint32_t magic0, magic1;
    185 #define MAGIC0		(*(volatile uint32_t *)(page + 0))
    186 #define MAGIC1		(*(volatile uint32_t *)(page + 4))
    187 
    188 	startaddr = (char *)MIPS_PHYS_TO_KSEG1(start);
    189 	endaddr = (char *)MIPS_PHYS_TO_KSEG1(end);
    190 
    191 	page = startaddr;
    192 	if (badaddr(page, 4))
    193 		return;
    194 
    195 	do {
    196 		magic0 = random();
    197 		magic1 = random();
    198 	} while (MAGIC0 == magic0 || MAGIC0 == magic1);
    199 
    200 	MAGIC0 = magic0;
    201 	MAGIC1 = magic1;
    202 	wbflush();
    203 
    204 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    205 		return;
    206 
    207 	for (page += PAGE_SIZE; page < endaddr; page += PAGE_SIZE) {
    208 		if (badaddr(page, 4))
    209 			return;
    210 		if (MAGIC0 == magic0 &&
    211 		    MAGIC1 == magic1) {
    212 			goto memend_found;
    213 		}
    214 	}
    215 
    216 	/* check for 32MByte memory */
    217 	page -= PAGE_SIZE;
    218 	MAGIC0 = magic0;
    219 	MAGIC1 = magic1;
    220 	wbflush();
    221 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    222 		return; /* no memory in this bank */
    223 
    224  memend_found:
    225 	mem_clusters[mem_cluster_cnt].start = start;
    226 	mem_clusters[mem_cluster_cnt].size = page - startaddr;
    227 
    228 	/* skip kernel area */
    229 	if (mem_cluster_cnt == 1)
    230 		mem_clusters[mem_cluster_cnt].size -= start;
    231 
    232 	mem_cluster_cnt++;
    233 #undef MAGIC0
    234 #undef MAGIC1
    235 }
    236 
    237 void
    238 tx_reboot(int howto, char *bootstr)
    239 {
    240 
    241 	goto *(uint32_t *)MIPS_RESET_EXC_VEC;
    242 }
    243 
    244 void
    245 tx_cons_init(void)
    246 {
    247 	int slot;
    248 #define CONSPLATIDMATCH(p)						\
    249 	platid_match(&platid, &platid_mask_MACH_##p)
    250 
    251 #ifdef SERIALCONSSLOT
    252 	slot = SERIALCONSSLOT;
    253 #else
    254 	slot = TX39_UARTA;
    255 #endif
    256 	if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) {
    257 		if(txcom_cnattach(slot, CONSPEED,
    258 		    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
    259 			panic("tx_cons_init: can't attach serial console.");
    260 		}
    261 	} else {
    262 #if NM38813C > 0
    263 		if(CONSPLATIDMATCH(VICTOR_INTERLINK) &&
    264 		    m38813c_cnattach(TX39_SYSADDR_CARD1)) {
    265 			goto panic;
    266 		}
    267 #endif
    268 #if NTC5165BUF > 0
    269 		if(CONSPLATIDMATCH(COMPAQ_C) &&
    270 		    tc5165buf_cnattach(TX39_SYSADDR_CS3)) {
    271 			goto panic;
    272 		}
    273 
    274 		if(CONSPLATIDMATCH(SHARP_TELIOS) &&
    275 		    tc5165buf_cnattach(TX39_SYSADDR_CS1)) {
    276 			goto panic;
    277 		}
    278 
    279 		if(CONSPLATIDMATCH(SHARP_MOBILON) &&
    280 		    tc5165buf_cnattach(TX39_SYSADDR_MCS0)) {
    281 			goto panic;
    282 		}
    283 #endif
    284 	}
    285 
    286 	return;
    287 #if (NM38813C > 0) || (NTC5165BUF > 0)
    288  panic:
    289 #endif
    290 	panic("tx_cons_init: can't init console");
    291 	/* NOTREACHED */
    292 }
    293 
    294 void
    295 tx_conf_register_intr(tx_chipset_tag_t t, void *intrt)
    296 {
    297 
    298 	KASSERT(t == &tx_chipset);
    299 	tx_chipset.tc_intrt = intrt;
    300 }
    301 
    302 void
    303 tx_conf_register_power(tx_chipset_tag_t t, void *powert)
    304 {
    305 
    306 	KASSERT(t == &tx_chipset);
    307 	tx_chipset.tc_powert = powert;
    308 }
    309 
    310 void
    311 tx_conf_register_clock(tx_chipset_tag_t t, void *clockt)
    312 {
    313 
    314 	KASSERT(t == &tx_chipset);
    315 	tx_chipset.tc_clockt = clockt;
    316 }
    317 
    318 void
    319 tx_conf_register_sound(tx_chipset_tag_t t, void *soundt)
    320 {
    321 
    322 	KASSERT(t == &tx_chipset);
    323 	tx_chipset.tc_soundt = soundt;
    324 }
    325 
    326 void
    327 tx_conf_register_video(tx_chipset_tag_t t, void *videot)
    328 {
    329 
    330 	KASSERT(t == &tx_chipset);
    331 	tx_chipset.tc_videot = videot;
    332 }
    333